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TransAlta

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FY2020 Annual Report · TransAlta
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Our
E2SG Advantage

TransAlta Corporation
2020 Annual Integrated Report

Letter to Shareholders 

Message from the Chair 

TransAlta At A Glance 

Our E2SG Performance 

Our E2SG Reporting and Recognition 

Our Energy Transformation: 2000 to 2025 

Our Culture 

Management’s Discussion and Analysis 

Consolidated Financial Statements 

Notes to Consolidated Financial Statements 

Eleven-Year Financial and Statistical Summary 

Plant Summary 

Sustainability Performance Indicators 

Independent Practitioner’s Assurance Report 

Shareholder Information 

Shareholder Highlights 

Corporate Information 

Glossary of Key Terms 

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M1

F1

F12

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E2SG is more than simply a business strategy at TransAlta, it’s a competitive advantage. 

Sustainability, or ESG, is one of our core values: it is part of our corporate culture and is a 

top  priority.  We  strive  to  integrate  sustainability  into  governance,  decision-making,  

risk  management  and  our  day-to-day  to  business  processes,  while  balancing  growth 

considerations  and  the  economy,  and  that’s  why  we  put  the  extra  E  in  ESG  —  E2SG.  The 

outcome  of  our  sustainability  focus  is  continuous  improvement  on  key  ESG  issues  and 

ensuring  our  economic  value  creation  is  balanced  with  a  value  proposition  for  the 

environment and for people.

Environment

Social

Economic

Governance

TransAlta aligns its ESG goals to the United Nations Sustainable Development Goals to ensure our goals and targets are supportive of solving key global ESG issues.
Learn more at www.un.org/sustainabledevelopment/sustainable-development-goals

TransAlta Corporation    |    2020  Annual Integrated Report

1

Letter to Shareholders

The  events  of  this  year  were  unexpected  and  challenging, 

bringing  with  them  moments  of  deep  concern  over  what 

the future might hold. Yet step by step and hour by hour, the 

TransAlta  team  faced  into  every  fact  we  could  gather  and 

took the necessary measures to keep the company strong, 

our people safe and our customers served.

As shareholders, you can be proud of how we are handling the COVID-19 pandemic and how we have positioned the 
Company  for  2021  and  beyond.  We  finished  2020  with  strong  financial  and  operational  performance  and  we  made 
significant progress to deliver on the strategies that are transforming our future. 

On February 4, 2021, our Board of Directors announced my retirement from TransAlta effective March 31, 2021, and the 
appointment of John Kousinioris as our new CEO effective April 1. I am thrilled that the Board appointed John as our new 
CEO and supported his appointment wholeheartedly. John and I have worked together for over eight years and he has 
proven himself to be a respected and well-rounded leader capable of deftly navigating the ship over the next decade. He 
is ready to take the company into what will be an exciting time as clean electricity takes on an even more prominent and 
important role in fuelling our lives.  

The  year  was  marked  by  the  resilience  of  our  people,  the  performance  of  our  diversified  portfolio  of  investments  and 
progress  on  our  E2SG  (economic,  environment,  social  and  governance)  goals.  Growing  our  investments  in  TransAlta 
Renewables  and  continuing  with  our  investments  in  the  transition  off  coal  in  Alberta  have  strengthened  TransAlta’s 
overall E2SG framework. Together, our strategic investments, ownership of the hydro assets in Alberta and positioning in 
competitive gas-fired generation have set us up as a strong E2SG holding in your portfolio. 

Strong Performance
Despite the challenges of the year, the TransAlta team delivered strong free cash flow of $358 million, proving once again 
the value of our diversified portfolio. This year, exceptional performance by our US operations and our trading floor offset 
the impact of COVID-19 on our Alberta operations. 

Our free cash flow results of $1.31 per share were excellent, especially considering that our Alberta thermal business 
was down $159 million on a free cash flow basis compared to 2019 due to the province’s economic downturn. In 2020, we 
returned $61 million of capital to shareholders by purchasing and cancelling 7.35 million common shares at an average 
price of $8.33 per share through our normal course issuer bid program. 

Our share price climbed from $9.28 to over $9.67 this year and continued upward in early 2021 as investors realized 
that TransAlta has tremendous value in its portfolio. We also grew the dividend by six per cent for the second year. In 
October, we received our second instalment of the Brookfield financing and repaid $400 million of 2020 debt maturity. 
Now that we have completed our deleveraging program, the future is about returning capital to shareholders and funding 
our growth. 

2

TransAlta Corporation    |    2020  Annual Integrated Report

“The year was marked by 

the resilience of our people, 

the performance of our 

diversified portfolio of 

investments and progress 

on our E2SG (economic, 

environment, social and 

governance) goals.

”

NCIB Repurchase 
of Common Shares
($ millions)

80

60

40

20

2018

2019

2020

$61 million

Capital Returned  
to Shareholders in 2020

Through continued
capital allocation discipline

Letter to Shareholders

Our key indicator for safety performance is Total Injury Frequency and we set 
our 2020 goal as 1.17 — which is top-quartile performance. We achieved 1.67 
—  much  higher  than  planned  —  where  higher  means  worse  performance.  We 
set  a  goal  and  missed  our  target.  Failures  like  these  at  TransAlta  motivate  all 
of  us  to  do  better,  and  we  will  diligently  pursue  improvement  in  2021  for  our 
safety  culture.  On  a  positive  note,  for  Total  Safety  Reporting  we  recorded  40 
per  cent  more  observations  for  hazard  and  near  miss  reporting  compared  to  
2019. Adjusted availability was 90.3 per cent, ahead of our 2019 performance 
of 90 per cent.

As  I  mentioned  above,  we  experienced  massive  demand  destruction  in  our 
Alberta  business  as  COVID-19  profoundly  impacted  the  provincial  economy. 
By  mid-March,  almost  450  MW  of  load  disappeared  as  businesses  shut  down 
and people went home to work. Into May, the loss of load grew to 1,000 MW 
as  the  drop  in  oil  prices  led  to  oil  and  gas  production  shut-ins  as  the  sector 
tried to protect margins. Annual Alberta merchant market prices were $8 per 
megawatt hour lower than expected due to this demand destruction, and sales 
of megawatts to the grid were hit hard. But we continued to maintain a strong 
financial  position  through  2020  due  to  terrific  hedging  work  by  our  team  and 
strong  performance  at  Centralia  and  in  our  energy  marketing  segment.  Our 
diversified  portfolio  paid  off,  and  by  November  2020,  all  but  150  MW  of  load 
had come back in Alberta.

In  May,  we  decided  to  pull  back  on  our  growth  goals,  primarily  so  we  could 
conserve cash in case the impacts of COVID-19 affected our customers harder 
than expected. Luckily, through the year, all customers paid their bills on time 
and we were only hit slightly on our collections. However, we ended 2020 with 
much stronger liquidity than expected and by year-end we had access to $2.1 
billion in liquidity, including $703 million of cash and cash equivalents.

Delivering Strategy
We  have  reduced  our  greenhouse  gas  emissions  by  61  per  cent  since  2005, 
which is more than any country in the world on a percentage change basis. Our 
gas  conversion  strategy  means  our  greenhouse  gas  emissions  are  now  down 
to just over 16 tonnes from 42 million tonnes in 2005. By the end of 2030, our 
emissions  will  be  12.5  million  tonnes,  an  approximate  70  per  cent  reduction 
from  our  2005  levels.  TransAlta  has  made  significant  progress  on  reducing 
greenhouse gas emissions, which puts us at the top of the list for ESG investors.

The  team  delivered  on  our  strategy  in  2020.  We  continued  to  advance  our 
conversion  to  gas  program,  and  on  February  1,  2021,  we  announced  the  final 
return to service for Sundance Unit 6, which now fires exclusively on gas. At the 
end of 2020, we retired Unit 1 at our Centralia facility in Washington to uphold 
our commitment under the Energy Transition Bill with the state. The deal that 
was struck in 2011 allowed us to keep both units running, free of carbon liability, 
in  return  for  certain  shutdown  dates  of  the  end  of  2020  for  Unit  1  and  2025 
for Unit 2. Unit 1 ran for 20 years under our ownership, logged over 9.2 million 
person-hours and kept hundreds of people employed over two decades. 

TransAlta Corporation    |    2020  Annual Integrated Report

3

Letter to Shareholders

In  November,  we  affirmed  our  commitment  to  proceed  with  the  Sundance  5 
repowering  project  in  Alberta,  which  will  convert  an  existing  thermal  coal 
unit  into  a  highly  efficient  combined-cycle  natural  gas  generating  facility.  The 
Sundance  Unit  5  repowering  project  received  approval  from  the  company’s 
Board of Directors and is on track to reach commercial operation by the fourth 
quarter of 2023. 

We  announced  that  we  will  discontinue  mining  operations  at  our  Alberta 
Highvale  coal  mine  at  the  end  of  2021.  This  means  that  Keephills  Unit  1 
and Sundance Unit 4 will no longer run on coal, and will only run on gas after 
December  31,  2021.  The  federal  government  announced  its  intention  in 
December 2020 to raise the carbon tax in Canada to $170/tonne by 2030. This 
announcement confirmed that our decision to accelerate our off-coal strategy 
to the end of 2021 was prudent. 

We saw significant progress in our renewables portfolio this year. In October, 
we  announced  that  our  10  MW  WindCharger  battery  storage  project  began 
commercial  operation.  This  project  had  a  total  capital  cost  of  approximately  
$14 million, with approximately 50 per cent being funded through the support of 
Emissions Reduction Alberta. It is located behind the fence at the Summerview 
wind facility and is a first-of-its-kind example of firm, truly green electricity. It is 
a test of a future where batteries back up renewable and intermittent renewable 
energy sources. 

In  December,  we  acquired  a  49  per  cent  interest  in  the  Skookumchuck  wind 
facility in Washington State. We combined this interest with our Alberta Windrise 
wind project and our Ada cogeneration project to complete a dropdown of these 
three  highly  contracted  assets  to  TransAlta  Renewables.  This  transaction  was 
a  win/win  for  TransAlta  and  TransAlta  Renewables  shareholders.  TransAlta 
Renewables  shareholders  received  $439  million  of  assets  from  TransAlta  and 
TransAlta  continues  to  own  a  60  per  cent  interest  through  our  ownership  in 
TransAlta  Renewables.  The  transaction  extended  the  contracted  cash  flow 
horizon  at  TransAlta  Renewables  and  provides  stability  and  sustainability  to 
our  $150-million  annual  dividend  earned  from  our  ownership  in  TransAlta 
Renewables.  This  transaction  gave  us  the  confidence  to  also  concurrently 
announce a dividend increase of six per cent for our TransAlta shareholders. 

In  December,  we  announced  a  small  investment  in  a  company  called  EMG 
International LLC, which has a technology that biologically cleans wastewater 
in the food processing industry. We believe that water conservation will become 
a  key  pillar  of  sustainability  and  that  working  with  EMG  to  both  expand  their 
business and also market clean and renewable energy to their customer base is 
a low-risk and low-cost way to expand our reach to US industrial customers for 
E2SG offerings in cogeneration, wind, solar and now, water. 

“TransAlta is incredibly  

well positioned to lower 

greenhouse gas emissions 

while continuing to provide 

low-cost, reliable electricity 

to our customers. Our 

strategy is simple and 

focused, our performance  

is consistent, and our  

people are exceptional.

”

Adjusted Availability
(%)

100

80

60

40

20

2018

2019

2020

Overall, our Clean Energy Investment Plan is on track and is the right strategy 
for  the  trends  ahead  where  customers  are  demanding  clean,  low-cost  and 
reliable electricity. By the end of 2021, Keephills 2 and 3 will be running on gas, 
Sundance Unit 5 will be under construction and our coal mine will be shut down 
and transitioned to reclamation only. As the capital needs of our Clean Energy 
Investment  Plan  reach  completion,  more  cash  will  be  available  to  TransAlta 

$927million

Comparable EBITDA

A $7 million increase over  
2019 after adjustments

4

TransAlta Corporation    |    2020  Annual Integrated Report

Letter to Shareholders

shareholders  for  re-investment,  share  buyback  and  dividends.  The  $150  million  of  cash  that  TransAlta  Renewables 
annually pays in dividends to TransAlta shareholders is a stable and consistent source of cash flow for investors that, when 
combined with excess cash from our Alberta business and our energy marketing team, gives us a strong base of cash flow 
for opportunities that are emerging in the broader energy transition. 

Resilient People
For  a  business  that  prides  itself  on  serving  the  community,  a  pandemic  is  a  difficult  challenge,  but  is  in  no  way 
insurmountable. Our people quickly organized to protect those essential employees who had to continue to work from 
our facilities throughout the pandemic. By June, those who had been working from home were able to return to our offices 
with strong medically approved protocols for social distancing, masking and wiping all surfaces that we touched. It was 
disappointing to have to return to our home offices in December in Canada and the US, and 2021 will be another year of 
adapting to what comes with the pandemic. Yes as we have seen in 2020, the team has outstanding practices for running 
the company and will continue delivering on our strategy no matter what. 

In 2020, we demonstrated that we are One TransAlta made up of many parts. We are truly stronger together. We achieved 
top-quartile results in our Organizational Health Index, a survey where our people assess TransAlta’s performance and 
results are measured against three million other employees assessing the organizational health of their companies. It has 
taken us four years to move from fourth quartile to first, an achievement that could only be done thanks to the consistent 
commitment from leaders across the company. 

I am incredibly proud that we have adopted a Diversity, Equity and Inclusion Pledge that commits the company to advance 
diversity and inclusion in the workplace. By undertaking this pledge, we will seek to remove systemic barriers that may 
prevent  diverse  employees  from  thriving,  including  visible  minorities,  Indigenous  peoples,  members  of  the  LGBTQ+ 
community, persons with disabilities and women. For us, diversity and inclusion are about ensuring belonging for all our 
employees. In 2021, our plans and results will be reported to the Board of Directors. 

Looking Forward
As the team looks ahead, they see a number of opportunities to expand our gas and renewables fleet in Canada, the US 
and Australia. While we are not the only organization pursuing such projects, we find that customers highly value the skills 
and capabilities that companies who specialize in electricity bring to the table. TransAlta will continue to be a company 
focused on technology and innovation while exploring the viability of E2SG investments in carbon capture and storage, 
hydrogen,  pumped  storage,  batteries  and  the  like.  The  team  has  over  3,000  MW  in  its  growth  portfolio,  including  the 
innovative Brazeau hydro pumped storage facility. As governments and companies align to the idea of net zero by 2050, 
projects like Brazeau that can store a reliable source of green energy become that much more valuable. TransAlta is poised 
to accelerate and deliver new EBITDA growth in 2021 and beyond. 

We also expect increasing investor and stakeholder pressure to continue to reduce our emissions and green our fleet. 
TransAlta is incredibly well positioned to lower greenhouse gas emissions while continuing to provide low-cost, reliable 
electricity to our customers. Our strategy is simple and focused, our performance is consistent, and our people are exceptional.

As  always,  we  thank  you  for  your  investment  in  the  company  and  your  support.  I  am  especially  grateful  for  our  hard-
working  board  who  worked  side-by-side  with  me  over  the  last  three  years  so  that  we  could  transition  the  leadership 
of TransAlta to a new CEO and a strong management team without missing a beat. Despite a worldwide pandemic and 
exceptional impacts to the Alberta economy, 2020 was a strong year for TransAlta. That’s 100 per cent on the shoulders of 
our tough and resilient workforce who do their work without fanfare and by leading from every corner of the organization. 

Dawn L. Farrell
President and Chief Executive Officer
March 2, 2021

TransAlta Corporation    |    2020  Annual Integrated Report

5

Message from the Chair

I  have  had  the  great  honour  and  privilege  to  serve  as  the 

Chair of the Board of Directors of TransAlta Corporation for 

the past year. To say that the last year has been eventful for 

Placeholder Photo

TransAlta  would  be  a  tremendous  understatement.  The 

COVID-19  pandemic  has  disrupted  every  sector  of  the 

Canadian  economy,  resulting  in  significant  energy  demand 

destruction, including in the electricity sector.

As a result of the talent and preparedness within the organization, the teams at TransAlta ensured that we weathered this 
unforeseen storm with strength and pivoted where required with precision. It was, of course, the biggest obstacle we had 
to overcome in 2020. The pandemic accelerated at a time when we had just commenced a major construction project that 
required significant effort to maintain a safe and healthy work environment. As an essential service, it was imperative that 
we secure our normal course supply chain as well as acquire substantial personal protective equipment for which there 
was a worldwide shortage. Through it all, the project was completed on time and on budget and the TransAlta team was 
able  to  keep  all  operations  running  efficiently  to  ensure  there  were  no  supply  disruptions  to  our  customers.  More 
importantly, the COVID-19 virus barely found its way into our numerous workspaces and the protocols put in place were 
robust enough to prevent any on-site transmission within our workforce.

In difficult times such as those we all experienced in 2020, organizations get tested in ways no one could have foreseen. I 
am incredibly proud of the way the Board and management worked together to manage the pandemic response. Like all 
others, we had to adapt to remote meetings that challenged our collective abilities to remain efficient and productive. 
Responding to the pandemic imposed significant additional time requirements on all members of the leadership team and 
the Board beyond those required to execute the business plan. I am incredibly proud of every member of the TransAlta 
organization for their effort, adaptability, innovation and focus, which allowed us to achieve virtually all of the corporation’s 
key objectives for the year, albeit in a manner materially different than anticipated when those targets were set.  Never has 
the talent within the organization been tested in the way it was in 2020 and I can’t overstate the exemplary performance 
of the entire team. 

I believe management’s response to the pandemic was best in class. Throughout the year and into 2021 as information 
regarding the health threats of the virus evolved, keeping all members of the TransAlta team factually informed was a top 
priority.  This  was  clearly  a  challenge  with  lots  of  conflicting  information  circulating  in  the  news  and  social  media.  Our 
answer was to retain the services of doctors, immunologists and, more recently, a vaccinologist, to communicate directly 
with all members of the organization through frequent Town Halls during which the experts answered questions posed by 
our staff. I believe this direct access to health care professionals allowed everyone to make informed decisions about how 
to respond to the pandemic in the context of their own personal and family situations. As a result, the incidence of the 
virus within our workforce was minimal with, to the best of our knowledge, no transmission on any TransAlta work site. 
This also allowed us to confidently and safely re-open our head office with the majority of our staff returning on a full- or 
part-time  basis  sooner  than  most  other  businesses.  I  believe  that  was  a  key  factor  in  us  achieving  the  strong  financial 
results we delivered to our shareholders. 

6

TransAlta Corporation    |    2020  Annual Integrated Report

Message from the Chair

Pandemic Response 
An exemplary response to the pandemic was not our only notable achievement in 2020. We are proud to be the recipients 
of two important recognitions of the efforts of our leadership team and the Board of Directors — the Governance Gavel 
Award from the Canadian Coalition for Good Governance, and our significant jump in rank on The Globe and Mail’s Board 
Games ranking. These are important achievements to continue to establish the company as an industry leader in corporate 
governance  and  disclosure.  The  importance  of  diversity  both  in  the  organization  and  on  the  Board  is  well  understood 
within TransAlta and we are steadfast in our commitment to the goals that we have set surrounding diversity and inclusion 
within the organization. While we already have significant diversity within the organization, more work remains to be 
done and we are committed to undertaking that work. However, diversity for the sake of diversity doesn’t benefit anyone 
— diversity that develops and promotes talent within the organization is our objective. We are confident we can achieve 
our aggressive diversity targets within the time frames set out by our leadership team. Of particular note, in response to 
an employee initiative, during 2020 we created a Diversity and Inclusion Council within TransAlta with representation 
from many levels within the organization to advance and enhance our diversity initiatives. 

As always, the safety of our people remains a top priority. Safely completing our first coal to gas conversion in Alberta was 
another major accomplishment. This conversion is the first big step in our commitment to cease all coal mining operations 
by the end of 2021 and cease using coal in our Canadian fleet by the end of 2023. We are on track to deliver on the Clean 
Energy Investment Plan announced in 2019. Unfortunately, this transition means that we will part ways with a significant 
number of long-term employees in our thermal fleet. We thank all those employees for their outstanding commitment and 
dedicated efforts over many years in support of the corporation. 

Year-end 2020 marked the end of a capacity market in Alberta. Our team has worked hard to prepare the organization for 
the Alberta merchant market in which we now operate. We are confident those preparations will result in a seamless 
transition  supporting  continued  strong  financial  performance.  Another  milestone  achieved  in  2020  was  receipt  of  the 
final $400-million tranche of capital associated with the 2019 transaction with an affiliate of Brookfield Asset Management. 
The resulting strengthening of our balance sheet allows us to now direct our free cash flow towards moving our growth 
strategy forward and returning more capital to shareholders through increased dividends. Another key achievement for 
2020  was  bringing  WindCharger,  Alberta’s  first  utility-scale  battery  storage  project,  online.  We  are  all  tremendously 
excited about projects like this and the new opportunities we are now pursuing to deliver on our commitment to transition 
TransAlta into a leading clean electricity company.

In early February, the Board of Directors announced Dawn Farrell’s retirement and the appointment of John Kousinioris 
as  incoming  CEO  effective  April  1,  2021.  Dawn’s  35-year  career  in  electricity  is  full  of  significant  accomplishments, 
including ushering TransAlta into its clean electricity future and its departure from coal-fired generation — Dawn will be 
truly missed. Join me in congratulating John on this new appointment. He is poised to take the company into what will be 
an exciting time as clean electricity becomes an even more central and essential actor in the energy that is needed to fuel 
our lives. I have every confidence in John’s ability to lead the company. 

Our organization is strong, talented, agile and demonstrably capable of effectively responding to disruptive events that 
challenge lesser organizations. In 2020, we lost the talent and leadership of our Chairman Ambassador Gordon Giffin who 
retired at the Annual General Meeting. We have all benefited greatly from his leadership and are immensely grateful for 
his contributions to TransAlta. Sincerest thanks are also extended to all of our stakeholders, employees, Board members 
and communities in which we operate for collaborating to overcome the many different challenges we have faced. On 
behalf  of  your  Board,  I  can  assure  you  that  TransAlta  remains  dedicated  to  responsible  growth  and  energy  project 
development and is on the right strategic path to deliver the clean electricity needs of the future.

John P. Dielwart
Chair of the Board of Directors
March 2, 2021

TransAlta Corporation    |    2020  Annual Integrated Report

7

TransAlta At A Glance

$9.5

n
o

i
l
l
i

b

Enterprise Value
Strong balance sheet and capital discipline

$3.0

n
o

i
l
l
i

b

Market Capitalization
Listed on the TSX and the NYSE

Engaged Workforce
Our Employees are Central to Value Creation

Approximately 1,500 active employees

>109

s
r
a
e
y

Generation Experience
The foundation for our focused strategy

Diversified Portfolio
75 Generating Facilities with Approximately 8,000 MW of Net Capacity

Operating in Canada, the United States and Australia

Hydro

Solar

Wind

Storage

Gas

Coal

8

TransAlta Corporation    |    2020  Annual Integrated Report

TransAlta At A Glance

One of Canada’s Largest Publicly Traded 
Power Generators
We own, operate and manage a highly contracted and 

geographically diversified portfolio of assets

A Focused Strategy for Value Creation
Our goal is to deliver shareholder value by delivering solid 

returns through a combination of dividend yield and 

disciplined growth in cash flow per share

Successfully Executing Our Conversion to Gas
We will be off coal in Canada by the end of 2021 with a 

fully-funded transition plan

Delivering Growth in Our Renewables Fleet
We have a robust development portfolio with >2.4 GW 

of renewable energy opportunities and are the sponsor 

and majority owner of TransAlta Renewables

TransAlta Corporation    |    2020  Annual Integrated Report

9

Our E2SG Performance

$358

Free Cash Flow in 2020
Strong performance despite  

COVID-19 challenges

o

m

i
l
l
i

n 25

million
tonnes
Reduction in Greenhouse 
Gas Emissions Since 2005
Better than any country in the world on a % basis

q

1,500

Net Capacity Growth  
in Renewable Energy
Since 2005

W
M

u

40 

GHG Reductions & Renewables Growth
(million tonnes CO2e)
(net capacity MW) 
50 
3,000 
2,500 
2,000 
1,500 
1,000 
500 

10 

20 

30 

2005

2010

2015

2020

TransAlta GHG emissions (million tonnes CO2e)
Renewable energy growth (net capacity MW)

$15 million
Community Investment 
Over the Last Six Years
Youth & Education, Environmental Leadership

Community Health & Wellness

Alberta’s First
Battery Storage Project
Commissioned in 2020 and 50% funded 

through Emissions Reduction Alberta 

10

TransAlta Corporation    |    2020  Annual Integrated Report

Our E2SG Performance

The Largest Producer of Wind Power in Canada  
and Hydro Power in Alberta

Contributed more than 10 per cent of Canada’s  
Required GHG Emissions Reductions
as per Canada’s 2030 GHG target under the Paris Agreement

Adopted Diversity, Equity & Inclusion Pledge
Signed by the Board and Executive team, supporting our gender 

diversity goal of 40 per cent female employment by 2030

Progressed Our Safety Culture Transformation
The safety of our people, communities and the environment  

is one of our core values

One TransAlta Comprising Many Parts
Achieved top quartile results on the Organizational Health Index

TransAlta Corporation    |    2020  Annual Integrated Report

11

Our E2SG Reporting and Recognition

Economic / Environment / Social / Governance

We have reported on sustainability for over 25 years, and 2020 marked our sixth year of integrating financial 

and environment, social and governance (“ESG”) disclosure. We track over 80 social and environmental key 

performance indicators and report in alignment with TCFD1 and SASB2, two leading ESG frameworks.

Our leading sustainability target process links targets to sustainability and financial materiality, sets macro 

targets that are both year-over-year and long term, and involves Executive and Board approval.

TransAlta’s Five Sustainability Pillars
Clean, Reliable and Sustainable Electricity Production

Safe, Healthy, Diverse, and Engaged Workplace

Positive Indigenous, Stakeholder and Customer Relationships

Progressive Environmental Stewardship

Technology and Innovation

We have membership in and participate with key 

CDP (the global disclosure system for environmental 

sustainability organizations and working groups such 

impacts formerly known as Carbon Disclosure 

as the EXCEL Partnership, the Canadian Business 

Project) recognized TransAlta with an A- score, 

for Social Responsibility, the Energy Sector 

ranking the Company among industry leaders on 

Sustainability Leadership Initiative, Canadian 

climate change management. CDP has created a 

Electricity Association Sustainable Electricity 

system that results in unparalleled engagement on 

Steering Committee and Future-Fit, which all provide 

environmental issues worldwide.

validation and support of our sustainability strategy.

In 2021, TransAlta was once again added to the 

Bloomberg Gender-Equality Index. Standardized 

The Globe and Mail reported that we moved from a 
ranking of 48 to a ranking of 14 in their Board Games 

disclosure of gender-related data allows companies 

report. Board Games assesses the work of Canada’s 

to attract capital and talent, empowers investors 

largest Boards against a rigorous set of governance 

to make investment decisions through a social lens 

criteria (well beyond the minimum set by regulators), 

and enables employees and communities to hold 

covering board composition, compensation, 

companies accountable for progress.

shareholder rights and disclosure. 

(1) Task Force on Climate-Related Financial Disclosure   (2) Sustainability Accounting Standards Board

12

TransAlta Corporation    |    2020  Annual Integrated Report

Our Energy Transformation: 2000 to 2025

A quarter century of energy transformation at 

TransAlta includes a complete shift away from coal, 

significant growth in renewable energy and growth 

in on-site gas solutions for customers. Transformation 

and E2SG is a long-term commitment.

Our Progress from 2000 to 2025

Coal transition: 17 coal facilities transitioned off coal, 

totalling approximately 5,000 MW (net capacity)

GHG emission reductions: On track for approximately  

30 million tonnes CO2e in reductions

Wind net capacity growth: >1,500 MW

Cogeneration  growth: >1,000 MW

Transitioning to 100% Clean Electricity

Generation Mix in 2000

Generation Mix in 2025

13%

14%

27%
Gas and
Renewables

73%

42%

100%
Gas and
Renewables

58%

Coal

Gas

Renewables

TransAlta Corporation    |    2020  Annual Integrated Report

13

Our Culture
Our Culture

Our Vision

This defines what our company aspires to be and is working toward — it is our why.
A leader in clean electricity — committed to a sustainable future

Our Mission

This defines our core purpose — it is how we do it.
Provide safe, low-cost and reliable clean electricity

Our Values
These principles define our corporate culture. 

They reflect our skills and mindset, while providing 

a framework for everything we do.

Safety
Ensure the health and safety of our people, partners 
and stakeholders

Innovation
Develop and embrace innovative solutions to challenges

Sustainability
Reduce the impact of resource use in everything we do

Respect
Support our people, our partners, our communities 
and our environment

Integrity
Focus on honesty, transparency and doing what’s right

14

TransAlta Corporation    |    2020  Annual Integrated Report

Management’s Discussion and Analysis
Management’s Discussion and Analysis

Business Model
Table of Contents
Forward-Looking Statements

Corporate Strategy

Highlights

Significant and Subsequent Events

Segmented Comparable Results

Additional IFRS Measures and Non-IFRS Measures

Discussion of Consolidated Financial Results

Fourth Quarter

Discussion of Consolidated Financial Results for the 
   Fourth Quarter

Selected Quarterly Information

Key Financial Ratios

Financial Position

Cash Flows

Financial Capital

2021 Financial Outlook

M2

M3

M5

M10

M12

M16

M28

M29

M33

M35

M38

M39

M44

M46

M47

M53

Competitive Forces

Power-Generating Portfolio Capital

Other Consolidated Analysis

Critical Accounting Policies and Estimates

Accounting Changes

Financial Instruments

Environment, Social and Governance ("ESG")

M56

M58

M59

M63

M70

M72

M74

    Reliable, Low-Cost and Sustainable Energy Production M76

    Natural Capital Management

    Climate Change Management

    Human Capital Management

    Social and Relationship Capital Management

    Manufactured Capital Management

    2020 Sustainability Targets Performance

    2021+ Sustainable Targets

Governance and Risk Management

Disclosure Controls and Procedures

M79

M88

M97

M101

M107

M109

M111

M113

M126

This  Management’s  Discussion  and  Analysis  (“MD&A”)  should  be  read  in  conjunction  with  our  2020  audited  annual  
consolidated financial statements (the "consolidated financial statements") and our 2020 annual information form ("AIF"), each 
for  the  fiscal  year  ended  Dec.  31,  2020.  The  consolidated  financial  statements  have  been  prepared  in  accordance  with 
International Financial Reporting Standards (“IFRS”) for Canadian publicly accountable enterprises as issued by the International 
Accounting Standards Board (“IASB”) and in effect at Dec. 31, 2020. All dollar amounts in the tables are in millions of Canadian 
dollars unless otherwise noted and except amounts per share, which are in whole dollars to the nearest two decimals. All other 
dollar amounts in this MD&A are in Canadian dollars, unless otherwise noted. This MD&A is dated March 2, 2021. Additional 
information respecting TransAlta Corporation (“TransAlta”, “we”, “our”, “us” or the “Corporation”), including our AIF, is available 
on  SEDAR  at  www.sedar.com,  on  EDGAR  at  www.sec.gov  and  on  our  website  at  www.transalta.com.  Information  on  or 
connected to our website is not incorporated by reference herein.

TransAlta Corporation    |    2020  Annual Integrated Report

M1

TRANSALTA CORPORATION M1

 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

We are one of Canada’s largest publicly traded power generators with over 109 years of operating experience. We own, 
Business Model
operate  and  manage  a  highly  contracted  and  geographically  diversified  portfolio  of  assets  representing  8,128 
Our Business
megawatts  ("MW")(1)  of  capacity  and  use  a  broad  range  of  fuels  that  include  water,  wind  and  solar,  natural  gas,  and 
thermal coal. The Corporation is currently undertaking a multi-year transition to convert or retire all of our thermal coal 
units  completely  by  the  end  of  2025.  This  transition  will  see  our  thermal  units  in  Alberta  discontinue  all  firing  with 
thermal coal and the discontinuation of all coal mining operations by the end of Dec. 31, 2021. Our Centralia coal-fired 
facility in Washington State is committed to be retired under the TransAlta Energy Transition Bill. Consistent with our 
commitment under this bill, Centralia Unit 1 retired on Dec. 31, 2020, and the remaining unit is set to retire on Dec. 31, 
2025. Our energy marketing operations maximize margins by securing and optimizing high-value products and markets 
for ourselves and our customers in dynamic market conditions.

Our vision is to be a leader in clean electricity and we are committed to a sustainable future. Our mission is to provide 
safe,  low-cost  and  reliable  clean  electricity.  With  our  109-year  history  of  powering  economies  and  communities,  we 
Vision and Values
apply our expertise, scale and diversified fuel mix to capitalize on opportunities in our core markets and grow in areas 
where  our  competitive  advantages  can  be  employed.  Our  values  are  grounded  in  safety,  innovation,  sustainability, 
integrity  and  respect,  all  of  which  enable  us  to  work  towards  our  common  goals.  These  values  are  the  principles  that 
define  our  corporate  culture.  They  reflect  our  skills  and  mindset,  while  providing  a  framework  for  everything  we  do, 
guiding both internal conduct and external relationships. These values are at the heart of our success.

Our  goals  are  to  deliver  shareholder  value  by  delivering  solid  returns  through  a  combination  of  dividend  yield  and 
disciplined growth in cash flow per share. We strive for a low to moderate risk profile over the long term while balancing 
Strategy for Value Creation
capital allocation and maintaining financial strength to allow for financial flexibility. Our segmented cash flow growth is 
driven  by  optimizing  and  diversifying  our  existing  assets  and  further  expanding  our  overall  portfolio  and  presence  in 
Canada, the United States of America ("US") and Australia. We are focusing on these geographic areas as our expertise, 
scale and diversified fuel mix create a competitive advantage that we can leverage to capture expansion opportunities to 
create shareholder value.  

Sustainability  means  ensuring  that  our  financial  returns  consider  short-  and  long-term  economics,  environmental 
impacts and societal and community needs. We refer to this as E2SG. This MD&A integrates our financial or economics 
Material Sustainability Impacts
("E")  and  sustainability  or  environment,  social  and  governance  (“ESG”)  reporting.  Key  elements  of  our  sustainability 
disclosure  are  guided  by  our  sustainability  materiality  assessment.  To  help  inform  discussion  and  provide  context  on 
how  E2SG  affects  our  business,  we  have  referenced  the  provincial  securities  commission  guidance,  Global  Reporting 
Initiative, Sustainability Accounting Standards Board and the Task Force on Climate-related Financial Disclosures. Our 
content  is  structured  following  guidance  on  non-traditional  capitals  from  the  International  Integrated  Reporting 
Framework. In addition, we track the performance of 80 sustainability-related Key Performance Indicators ("KPIs") and 
have obtained a limited assurance report from Ernst & Young LLP over material KPIs. 

(1) We measure capacity as net maximum capacity (see the Glossary of Key Terms for the definition of this and other key terms), which is consistent with industry 
standards. Capacity figures represent capacity owned and in operation unless otherwise stated, and reflect the basis of consolidation of underlying assets.

M2

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M2

Management’s Discussion and Analysis
Management’s Discussion and Analysis

This  MD&A  includes  "forward-looking  information"  within  the  meaning  of  applicable  Canadian  securities  laws,  and 
"forward-looking  statements"  within  the  meaning  of  applicable  US  securities  laws,  including  the  US  Private  Securities 
Forward-Looking Statements
Litigation  Reform  Act  of  1995  (collectively  referred  to  herein  as  "forward-looking  statements").  All  forward-looking 
statements are based on our beliefs as well as assumptions based on information available at the time the assumption 
was made, and on management's experience and perception of historical trends, current conditions and expected future 
developments, as well as other factors deemed appropriate in the circumstances. Forward-looking statements are not 
facts, but only predictions and generally can be identified by the use of statements that include phrases such as "may," 
"will," "can," "could," "would," "shall," "believe," "expect," "estimate," "anticipate," "intend," "plan," "forecast," "foresee," 
"potential," "enable," "continue" or other comparable terminology. These statements are not guarantees of our future 
performance, events or results and are subject to risks, uncertainties and other important factors that could cause our 
actual performance, events or results to be materially different from that set out in or implied by the forward-looking 
statements.

In particular, this MD&A contains forward-looking statements including, but not limited to: operating performance and 
transition to clean power generation, including our goal to eliminate coal as a fuel source in the Alberta thermal fleet by 
2021;  our  Clean  Energy  Investment  Plan  and  the  benefits  thereof;  transitioning  to  100  per  cent  clean  electricity  by 
2025;  the  source  of  funding  for  the  Clean  Energy  Investment  Plan;  our  transformation,  growth,  capital  allocation  and 
debt  reduction  strategies;  growth  opportunities  from  2021  and  beyond,  including  potential  for  growth  in  renewables 
and  on-site  and  cogeneration  assets,  including  the  demand  therefor  and  greenfield  development  acquisitions;  the 
amount of capital allocated to new growth or development projects and the funding thereof; our business, anticipated 
future  financial  performance  and  anticipated  results,  including  our  outlook  and  performance  targets;  our  expectation 
that  the  sale  of  TransAlta's  interest  in  the  Pioneer  Pipeline  will  close  in  2021;  receiving  funding  under  the  Canada 
Emergency Wage Subsidy program; the ability to reach a commercial solution with Energy Transfer Canada regarding 
the  construction  and  operation  of  the  Kaybob  3  cogeneration  facility;  the  timing  and  the  completion  of  growth  and 
development projects, and their attendant costs; our estimated spend on growth and sustaining capital and productivity 
projects;  expectations  in  terms  of  the  cost  of  operations  and  maintenance,  and  the  variability  of  those  costs;  the 
conversion or repowering of our coal-fired units to natural gas, and the timing and costs thereof; expectations relating to 
the  benefits  of  the  conversions  and  repowering;  the  terms  of  the  current  or  any  further  proposed  share  buyback 
programs, including timing and number of shares to be repurchased pursuant to any normal course issuer bid and the 
acceptance  thereof  by  the  Toronto  Stock  Exchange  ("TSX");  the  mothballing  of  certain  units;  the  impact  of  certain 
hedges  on  future  earnings,  results  and  cash  flows;  estimates  of  fuel  supply  and  demand  conditions  and  the  costs  of 
procuring fuel; expectations for demand for electricity, including for clean energy, in both the short term and long term, 
and the resulting impact on electricity prices; the impact of load growth, increased capacity and natural gas and other 
fuel  costs  on  power  prices;  expectations  in  respect  of  generation  availability,  capacity  and  production;  expectations 
regarding  the  role  that  different  energy  sources  will  play  in  meeting  future  energy  needs;  expected  financing  of  our 
capital expenditures; expected governmental regulatory regimes and legislation, as well as the cost of complying with 
resulting regulations and laws; our marketing and trading strategy and the risks involved in these strategies; estimates 
of  future  tax  rates,  future  tax  expense  and  the  adequacy  of  tax  provisions;  changes  in  accounting  estimates  and 
accounting  policies;  the  mitigation  of  risks  and  effectiveness  thereof,  including  as  it  pertains  to  climate  change  risk, 
environmental management, cybersecurity, commodity prices and fuel supply; anticipated growth rates and competition 
in  our  markets;  our  expectations  and  obligations  and  anticipated  liabilities  relating  to  the  outcome  of  existing  or 
potential  legal  and  contractual  claims,  regulatory  investigations  and  disputes,  including  the  litigation  with  Fortescue 
Metals Group Ltd. relating to the South Hedland facility and the Mangrove (as defined below) proceedings relating to 
the Brookfield Investment, each discussed further below; our ability to achieve our E2SG targets; expectations regarding 
the  renewal  of  collective  bargaining  agreements;  expectations  for  the  ability  to  access  capital  markets  at  reasonable 
terms; the estimated impact of changes in interest rates and the value of the Canadian dollar relative to the US dollar, 
the Australian dollar and other currencies in locations where we do business; the monitoring of our exposure to liquidity 
risk;  expectations  in  respect  to  the  global  economic  environment  and  growing  scrutiny  by  investors  relating  to 
sustainability performance; and our credit practices. 

The forward-looking statements contained in this MD&A are based on many assumptions including, but not limited to, 
the following: the impacts arising from COVID-19 not becoming significantly more onerous on the Corporation, which 
includes  the  Corporation  being  permitted  to  continue  to  operate  as  an  essential  service;  no  significant  changes  to 
applicable  laws  and  regulations,  including  any  tax  and  regulatory  changes  in  the  markets  in  which  we  operate;  no 
material adverse impacts to investment and credit markets; Alberta spot power prices being in the range of $58 to $68 
per megawatt hour ("MWh") in 2021; Mid-C spot power prices being in the range of US$25 to US$35 per MWh in 2021; 
sustaining capital in 2021 being between $175 million and $210 million; productivity capital of $3 million to $7 million; 
applicable  discount  rates;  our  proportionate  ownership  of  TransAlta  Renewables  Inc.  ("TransAlta  Renewables")  not 
changing materially; no decline in the dividends to be received from TransAlta Renewables; the expected life extension 
of  the  Alberta  thermal  fleet  and  anticipated  financial  results  generated  on  conversion  or  repowering;  assumptions 

TransAlta Corporation    |    2020  Annual Integrated Report

M3

TRANSALTA CORPORATION M3

Management’s Discussion and Analysis

Management’s Discussion and Analysis

regarding  the  ability  of  the  converted  units  to  successfully  compete  in  the  Alberta  energy  market;  and  assumptions 
regarding our current strategy and priorities, including as it pertains to our current priorities relating to the conversion 
to  gas,  growing  TransAlta  Renewables  and  realizing  the  full  economic  benefit  from  our  capacity,  energy  and  ancillary 
services.

Forward-looking statements are subject to a number of significant risks, uncertainties and assumptions that could cause 
actual  plans,  performance,  results  or  outcomes  to  differ  materially  from  current  expectations.  Factors  that  may 
adversely impact what is expressed or implied by forward-looking statements contained in this MD&A include, but are 
not limited to, risks relating to the impact of COVID-19, which cannot currently be predicted, and which present risks 
including,  but  not  limited  to:  more  restrictive  directives  of  government  and  public  health  authorities;  reduced  labour 
availability and ability to continue to staff our operations and facilities; disruptions to our supply chains, including our 
ability to secure necessary equipment or to obtain regulatory approvals on the expected timelines or at all; COVID-19-
related  force  majeure  claims;  restricted  access  to  capital  and  increased  borrowing  costs;  a  further  decrease  in  short-
term and/or long-term electricity demand and lower merchant pricing in Alberta and Mid-C; reductions in production; 
increased costs resulting from our efforts to mitigate the impact of COVID-19; deterioration of worldwide credit and 
financial  markets;  a  higher  rate  of  losses  on  our  accounts  receivable  due  to  credit  defaults;  impairments  and/or 
writedowns  of  assets;  and  adverse  impacts  on  our  information  technology  systems  and  our  internal  control  systems, 
including  increased  cybersecurity  threats.  The  forward-looking  statements  are  also  subject  to  other  risk  factors  that 
include,  but  are  not  limited  to:  fluctuations  in  market  prices;  changes  in  demand  for  electricity  and  capacity  and  our 
ability  to  contract  our  generation  for  prices  that  will  provide  expected  returns  and  replace  contracts  as  they  expire; 
changes to the legislative, regulatory and political environments in the jurisdictions in which we operate; environmental 
requirements and changes in, or liabilities under, these requirements; changes in general economic or market conditions 
including  interest  rates;  operational  risks  involving  our  facilities,  including  unplanned  outages  at  such  facilities; 
disruptions in the transmission and distribution of electricity; the effects of weather and other climate-change related 
risks;  unexpected  increases  in  cost  structure;  disruptions  in  the  source  of  fuels,  including  natural  gas  required  for  the 
conversions and repowering, as well as the extent of water, solar or wind resources required to operate our facilities; 
failure to meet financial expectations; natural and man-made disasters, including those resulting in dam or dyke failures; 
the threat of domestic terrorism and cyberattacks; pandemics or epidemics and any associated impact on supply chain; 
equipment failure and our ability to carry out or have completed the repairs in a cost-effective manner, timely manner or 
at all; commodity risk management and energy trading risks; industry risk and competition; the need to engage or rely on 
certain stakeholder groups and third parties; fluctuations in the value of foreign currencies and foreign political risks; 
the  need  for  and  availability  of  additional  financing;  structural  subordination  of  securities;  counterparty  credit  risk; 
changes  to  our  relationship  with,  or  ownership  of,  TransAlta  Renewables;  risks  associated  with  development  projects 
and  acquisitions,  including  capital  costs,  permitting,  labour  and  engineering  risks,  and  delays  in  the  construction  or 
commissioning  of  projects  or  delays  in  the  closing  of  acquisitions;  changes  in  expectations  in  the  payment  of  future 
dividends,  including  from  TransAlta  Renewables;  inadequacy  or  unavailability  of  insurance  coverage;  downgrades  in 
credit ratings; our provision for income taxes; legal, regulatory and contractual disputes and proceedings involving the 
Corporation, including as it pertains to establishing commercial operations at the South Hedland facility and in relation 
to the Brookfield Investment; reliance on key personnel; and labour relations matters. The foregoing risk factors, among 
others,  are  described  in  further  detail  in  the  Governance  and  Risk  Management  section  of  this  MD&A  and  the  Risk 
Factors section in our AIF for the year ended Dec. 31, 2020.

Readers are urged to consider these factors carefully in evaluating the forward-looking statements and are cautioned 
not  to  place  undue  reliance  on  them,  which  reflect  the  Corporation's  expectations  only  as  of  the  date  hereof.  The 
forward-looking statements included in this document are made only as of the date hereof and we do not undertake to 
publicly  update  these  forward-looking  statements  to  reflect  new  information,  future  events  or  otherwise,  except  as 
required  by  applicable  laws.  The  purpose  of  the  financial  outlooks  contained  herein  is  to  give  the  reader  information 
about  management's  current  expectations  and  plans  and  readers  are  cautioned  that  such  information  may  not  be 
appropriate for other purposes. In light of these risks, uncertainties and assumptions, the forward-looking statements 
might  occur  to  a  different  extent  or  at  a  different  time  than  we  have  described,  or  might  not  occur  at  all.  We  cannot 
assure that projected results or events will be achieved.

M4

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M4

Management’s Discussion and Analysis
Management’s Discussion and Analysis

Our  strategic  focus  is  to  invest  in  a  disciplined  manner  in  a  range  of  clean  and  renewable  power  generation  such  as 
hydro, wind, solar, energy storage and thermal (natural gas-fired and cogeneration) and develop customer-centric green 
Corporate Strategy 
power solutions that produce electricity for the needs of our industrial customers and communities in order to deliver 
returns to our shareholders. 

TransAlta's Clean Energy Investment Plan, announced in 2019, includes converting our existing Alberta coal assets to 
natural  gas  and  advancing  our  leadership  position  in  on-site  generation  and  renewable  electricity.  The  Clean  Energy 
Clean Energy Investment Plan
Investment Plan identified opportunities of $1.9 billion to $2.1 billion that TransAlta is pursuing. A significant number of 
these opportunities have been completed, with the projects achieving commissioned status in 2019 and 2020.   

The  implementation  and  execution  of TransAlta's  Clean  Energy  Investment  Plan,  including  the  acceleration  of  certain 
features  of  that  plan,  is  being  facilitated  by  the  $750  million  strategic  investment  (the  "Brookfield  Investment")  by 
Brookfield Renewable Partners or its affiliates (collectively, "Brookfield") that we announced in March 2019. The first 
$350 million tranche of Brookfield's Investment closed in May 2019 and facilitated the acceleration of our conversion to 
gas plan discussed below. The second $400 million tranche of Brookfield's Investment closed on Oct. 30, 2020, and will 
help  further  the  advancement  and  implementation  of  the  remainder  of  our  Clean  Energy  Investment  Plan.  The 
Brookfield Investment will fund other growth initiatives, while helping the Corporation maintain a strong balance sheet 
and financial flexibility to carry out the other pillars of our strategy discussed below. Please refer to the Significant and 
Subsequent Events section of this MD&A for further details. 

Please refer to the 2021+ Sustainable Development Targets section of this MD&A for further details on sustainability 
targets and near-term objectives that further support our Clean Energy Investment Plan. 

Our strategic priorities were advanced in 2020 and what follows is an update of how we executed in 2020, as well as our 
intentions for 2021 and beyond:

Successfully convert to natural gas as the primary fuel source in the Alberta thermal fleet

1.
We are transitioning our Alberta thermal fleet to natural gas as part of our Clean Energy Investment Plan. We plan to 
invest  between  $900  million  to  $1.0  billion  to  convert  or  repower  our  Alberta  thermal  fleet  to  natural  gas.  This  will 
repurpose and reposition our fleet to a cleaner, gas-fired fleet while delivering attractive returns through leveraging the 
Corporation's existing infrastructure.

The highlights of these gas conversion investments include:

▪
▪
▪
▪

Positioning TransAlta’s fleet as a low-cost clean energy generator in the Alberta energy-only market;
Generating attractive returns by leveraging the Corporation’s existing infrastructure;
Significantly extending the life and cash flows of our Alberta thermal assets; and
Significantly reducing air emissions and costs.

The following key achievements over the past year helped us advance this part of our strategy:

▪

▪

Conversion to gas – TransAlta’s Clean Energy Investment Plan includes converting three of our existing Alberta 
thermal  units  to  gas  during  2021  by  replacing  existing  coal  burners  with  natural  gas  burners.  The  cost  to 
convert each of TransAlta's wholly owned units is expected to be approximately $35 million per unit. On Feb. 1, 
2021, we announced the completion of the conversion to gas of Sundance Unit 6. The Corporation continues to 
advance conversion of its Keephills Unit 2 and Keephills Unit 3 for completion later in 2021 and has issued Full 
Notice to Proceed (“FNTP”) for both units. In addition, on April. 4, 2020, the dual-fuel conversion of Sheerness 
Unit 2 was completed. The Sheerness Unit 1 conversion to gas is in progress with expected completion in the 
first quarter of 2021. The Sheerness facility will receive it's last coal shipment in the first quarter of 2021, with 
coal  stock  being  actively  depleted  until  the  end  of  2021.  The  elimination  of  coal  as  a  fuel  source  will  reduce 
future fuel costs and greenhouse gas ("GHG") costs at Sheerness.

Gas  Repowering  –  The  Clean  Energy  Investment  Plan  also  includes  the  repowering  of  the  steam  turbines  at 
Sundance  Unit  5  and,  potentially,  Keephills  Unit  1,  by  installing  one  or  more  combustion  turbines  and  heat 
recovery  steam  generators,  thereby  creating  highly  efficient  combined-cycle  units.  The  repowered  units  are 
expected to be a 35 per cent to 45 per cent lower capital investment when compared to a new combined-cycle 
facility, while achieving a similar heat rate. During the first quarter of 2020, we received regulatory approval 
from  the  Alberta  Utilities  Commission  ("AUC")  and  Alberta  Environment  and  Parks  for  the  repowering  of 

TransAlta Corporation    |    2020  Annual Integrated Report

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Sundance  Unit  5  and  Keephills  Unit  1  into  combined-cycle  units.  During  the  fourth  quarter  of  2020,  an 
equipment supply agreement was executed as part of the strategy to repower Sundance Unit 5 into a highly 
efficient combined-cycle unit. The commercial operation date is anticipated in the fourth quarter of 2023. The 
Sundance  Unit  5  repowered  combined-cycle  unit  will  have  a  capacity  of  approximately  730  MW  and  is 
expected  to  cost  approximately  $800  million  to  $825  million,  well  below  a  greenfield  combined-cycle 
project.  As  part  of  this  transaction,  we  also  acquired  a  long-term  power  purchase  agreement  ("PPA")  for 
capacity plus energy, including the pass-through of GHG costs, starting in late 2023 with Shell Energy North 
America (Canada). The Corporation will continue to evaluate the prospect for the repowering of Keephills Unit 
1 in 2021 and 2022 as a supply addition to the Alberta market in the 2026 to 2030 time frame. 

Cessation of Coal-Fired Operations by 2022 – TransAlta has determined to cease coal-fired operations in Canada 
by Jan. 1, 2022. During the third quarter of 2020, we approved the accelerated shutdown of the Highvale mine 
by  the  end  of  2021,  and  the  useful  life  of  the  related  assets  was  adjusted  to  align  with  the  Corporation's 
conversion  to  gas  plans.  We  will  continue  to  actively  deplete  our  coal  stock  and  will  wind  down  our  mining 
activity  by  the  end  of  2021.  As  a  result,  we  announced  that  Keephills  Unit  1  and  Sundance  Unit  4  will 
discontinue firing with coal and will be subject to further strategic assessment as to their feasibility to operate 
on gas effective Jan. 1, 2022. The maximum capability of these units will be reduced to 70 MW and 113 MW, 
respectively, when transitioned to operate on gas.  

Pioneer  Pipeline  and  Gas  Supply  –  On  Oct  1,  2020,  TransAlta  announced  that  it  had  entered  into  a  definitive 
Purchase and Sale Agreement for the sale of its 50 per cent interest in the Pioneer Pipeline to ATCO Gas and 
Pipelines  Ltd.  (“ATCO”)  (the  "Transaction").  The  purchase  price  of  $255  million  represents  both  TransAlta's 
and  Tidewater  Midstream  &  Infrastructure  Ltd.'s  ("TMI")  interests.  This  agreement  replaces  the  previous 
Purchase and Sale Agreement to sell the Pioneer Pipeline to NOVA Gas Transmission Ltd. ("NGTL") from the 
second  quarter  of  2020.  ATCO  acquired  the  right  to  purchase  the  Pioneer  Pipeline  through  an  option 
agreement  with  NGTL.  Following  closing  of  the  Transaction,  the  Pioneer  Pipeline  will  be  integrated  into 
NGTL's and ATCO's Alberta integrated natural gas transmission systems to provide reliable natural gas supply 
to  TransAlta's  Sundance  and  Keephills  power-generating  stations.  As  part  of  the  agreement,  TransAlta  has 
entered into incremental, long-term firm natural gas delivery transportation agreements with NGTL for 351 TJ 
per day, bringing the total firm natural gas transportation contracts up to 400 TJ per day by 2023. TransAlta’s 
current commitments, including the 139 TJ per day supply arrangement with TMI, will remain in place until the 
closing of the Transaction. The Transaction is subject to customary regulatory approvals and is anticipated to 
close during the second quarter of 2021.

Retirement  of  Sundance  3  –  On  July  22,  2020,  the  Corporation  announced  that  it  gave  notice  to  the  Alberta 
Electric System Operator ("AESO") to retire the mothballed coal-fired Sundance Unit 3 effective July 31, 2020. 
The  retirement  decision  was  largely  driven  by  our  assessment  of  future  market  conditions,  the  age  and 
condition  of  the  unit,  and  our  ability  to  supply  energy  and  capacity  from  our  generation  portfolio  in  Alberta. 
This decision advances our transition to 100 per cent clean electricity by 2025.

▪

▪

▪

2. Deliver growth in our renewables fleet
We  expanded  our  renewables  platform  in  the  US  in  2020  and  continue  to  identify  additional  opportunities  with 
customers on electricity offerings with a higher component of power coming from renewable sources. Our focus is to 
deliver  solid  returns  using  exceptional  project  development,  construction  and  integration  of  skills  and  capabilities.  In 
2019,  the  Big  Level  and  Antrim  wind  development  projects  were  commissioned,  allowing  us  to  invest  $340  million  in 
projects  with  solid  returns.  The  Skookumchuck  wind  project  and  WindCharger  battery  storage  project  were 
commissioned in 2020, representing investments of $93 million, which were within expected cost estimates. For 2021, 
we  are  constructing  the  Windrise  wind  project  in  Alberta,  which  is  expected  to  be  commissioned  by  year-end.  Our 
contract expansion at the Southern Cross facility in Australia provides an additional opportunity to invest in renewables.  

The following provides more detail on our 2020 achievements:

Windrise Wind Project
On Dec. 17, 2018, TransAlta's 207 MW Windrise wind project ("Windrise") was identified by the AESO as one of the 
three selected projects in the third round of the Renewable Electricity Program. TransAlta and the AESO subsequently 
executed a Renewable Electricity Support Agreement with a 20-year term. Windrise is situated on 11,000 acres of land 
located  in  the  county  of  Willow  Creek,  Alberta,  and  is  expected  to  cost  approximately  $270  million  to  $285  million. 
Windrise has secured approval for the wind facility and transmission line required to connect the facility to the Alberta 
grid  from  the  Alberta  Utilities  Commission  ("AUC”).  Construction  activities  on  Windrise  continue  to  advance  with  all 
appropriate procedures in place to protect the construction team during the COVID-19 pandemic. However, as a result 

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Management’s Discussion and Analysis
Management’s Discussion and Analysis

of COVID-19 and related delays in construction, the commercial operation date is expected to occur during the second 
half of 2021. As of Dec. 31, 2020, Windrise was 78 per cent complete.

Skookumchuck Wind Project
On Nov. 25, 2020, TransAlta completed the acquisition of the 49 per cent equity investment in the Skookumchuck wind 
project ("Skookumchuck") with Southern Power Company, a subsidiary of Southern Company. Skookumchuck is a 136.8 
MW  wind  project  located  in  Lewis  and  Thurston  counties  near  Centralia  in  Washington  state  consisting  of  38  Vestas 
V136 wind turbines. The project began commercial operation on Nov. 7, 2020, and has a 20-year PPA with Puget Sound 
Energy.  TransAlta's  total  net  capital  investment  was  $86  million  (US$66  million)  cash,  with  an  additional  $77  million 
(US$59 million) being funded with tax equity financing.  

BHP Nickel West Contract Extension
On  Oct.  22,  2020,  Southern  Cross  Energy  ("SCE"),  a  subsidiary  of  the  Corporation,  replaced  and  extended  its  current 
PPA  with  BHP  Billiton  Nickel  West  Pty  Ltd.  ("BHP").  SCE  is  composed  of  four  generation  facilities  with  a  combined 
capacity of 245 MW in the Goldfields region of Western Australia. 

The new agreement was effective Dec. 1, 2020, and replaces the previous contract that was scheduled to expire Dec. 31, 
2023.  The  amendment  to  the  PPA  extends  the  term  to  Dec.  31,  2038,  and  provides  SCE  with  the  exclusive  right  to 
supply  thermal  and  electrical  energy  from  the  Southern  Cross  facilities  for  BHP's  mining  operations  located  in  the 
Goldfields region of Western Australia. The extension will provide SCE a return on new capital investments, which will 
be  required  to  support  BHP's  future  power  requirements  and  recently  announced  emission  reduction  targets.  The 
amendments  within  the  PPA  also  provide  BHP  participation  rights  in  integrating  renewable  electricity  generation, 
including solar and wind, with energy storage technologies, subject to the satisfaction of certain conditions. Evaluation 
of renewable energy supply and carbon emissions reduction initiatives under the extended PPA with SCE are underway, 
including an 18.5 MW solar photovoltaic facility supported by a battery energy storage system and a waste heat steam 
turbine system.

WindCharger Project 
On  Aug.  1,  2020,  the  WindCharger  battery  storage  project  ("WindCharger")  was  sold  to  TransAlta  Renewables. 
WindCharger  has  been  operational  since  Oct.  15,  2020,  and  is  the  first  utility-scale  battery  energy  storage  project  in 
Alberta. The WindCharger  project  has  a  nameplate  capacity  of  10  MW  with  a  total  storage  capacity  of  20  MWh.  It  is 
located  in  southern  Alberta  in  the  Municipal  District  of  Pincher  Creek  next  to  TransAlta’s  existing  Summerview  wind 
facility  substation.  WindCharger  stores  energy  produced  by  the  nearby  Summerview  II  wind  facility  and  discharges  it 
into the Alberta electricity grid at times of peak demand. TransAlta is expected to receive co-funding of almost 50 per 
cent  of  the  $14  million  construction  cost  from  Emissions  Reduction  Alberta. WindCharger  is  participating  in  both  the 
Alberta wholesale energy and ancillary services market of the AESO.   

US Wind Projects
In 2019, we completed the construction of two wind projects (collectively, the "US Wind Projects") in the Northeastern 
US.  The  Big  Level  wind  project  ("Big  Level")  acquired  on  March  1,  2018,  consists  of  a  90  MW  project  located  in 
Pennsylvania  that  has  a  15-year  PPA  with  Microsoft  Corporation.  The  Antrim  wind  project  ("Antrim")  acquired  on 
March  28,  2019,  consists  of  a  29  MW  project  located  in  New  Hampshire  with  two  20-year  PPAs  with  Partners 
Healthcare and New Hampshire Electric Co-op. Big Level and Antrim began commercial operations on Dec. 19, 2019, 
and Dec. 24, 2019, respectively. The US Wind Projects have added an additional 119 MW of generating capacity to our 
Wind and Solar portfolio. 

3. Expand presence in the US renewables market
A  major  focus  of  our  business  development  efforts is  on  the  renewables  segment  of  the  US  market.  Demand  for  new 
renewables  in  the  US  is  expected  to  continue  its  strong  growth  in  the  near  term  and  President  Biden  is  expected  to 
initiate  policies  designed  to  support  further  renewables  growth.  We  have  started  prospecting  for  new  renewable 
development  sites  in  a  number  of  attractive  US  markets.  These  opportunities  are  expected  to  grow  TransAlta 
Renewables, utilize its excess debt capacity and deliver stable dividends back to TransAlta. 

In  addition  to  the  US  Wind  Projects,  the  Skookumchuck  wind  project  and  the  prospecting  activities  discussed  above, 
TransAlta  acquired  a  portfolio  of  up  to  1,250  gigawatts  ("GW")  of  wind  development  projects  in  the  US  in  2019.  A 
number of projects acquired within this portfolio are currently in the early stages of development by TransAlta. 

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Management’s Discussion and Analysis

4. Advance and expand our on-site generation and cogeneration business
We are focused on growing our on-site and cogeneration asset base, a business segment we have deep experience in, 
having  provided  on-site  cogeneration  services  to  customers  since  the  early  1990s.  Our  current  pipeline  under 
evaluation  is  approximately  600  MW  and  our  technical  design,  operations  experience  and  safety  culture  make  us  a 
strong partner in this segment. We see this segment growing as industrial and large-scale customers are looking to find 
solutions to help lower the costs of power production, replace aging or inefficient equipment, reduce network costs and 
meet their ESG objectives.

On Nov. 30, 2020, TransAlta acquired a 30 per cent equity interest in EMG International, LLC ("EMG") to diversify our 
sustainability  offerings  to  customers  while  directly  supporting  our  clean  energy  transition  and  sustainability  goals. 
Included  in  the  purchase  price  of  US$12  million  is  an  estimated  component  contingent  on  EMG  realizing  certain 
earnings metrics in 2020 and 2021, following the acquisition. The final contingent amount will be calculated based on 
actual  earnings  metrics  achieved.  EMG  is  an  established  company  with  over  25  years  of  experience  in  process 
wastewater  treatment  and  specializes  in  the  design  and  construction  of  high-rate  anaerobic  digester  systems.  EMG’s 
wastewater  treatment  process  converts  organic  waste  into  a  valuable  source  of  renewable  energy.  Their  technology 
produces  a  biogas  stream  that  can  be  used  as  fuel  to  generate  electricity,  displacing  energy  consumed  from  higher-
emitting resources. The investment provides a unique opportunity for TransAlta to leverage its vast expertise in on-site 
generation  to  support  further  advancements  by  EMG  in  the  waste-to-energy  space.  This  investment  will  advance  the 
Corporation's presence in the US sustainability and on-site generation markets.

On May 19, 2020, the Corporation closed the acquisition of a contracted natural-gas-fired cogeneration asset from two 
private  companies  for  a  purchase  price  of  US$27  million.  The  Ada  facility  is  a  29  MW  cogeneration  facility  ("Ada")  in 
Michigan  that  is  contracted  under  a  PPA  and  a  steam  sale  agreement  for  approximately  six  years  with  Consumers 
Energy and Amway. 

In 2019, TransAlta and Energy Transfer Canada ("ET Canada" formerly known as SemCAMS Midstream ULC) entered 
into agreements to develop, construct and operate a 40 MW cogeneration facility at the Kaybob South No. 3 sour gas 
processing plant (“K3”). The facility was expected to receive its final regulatory approvals in the second half of the year 
and  begin  construction  in  December  2020.  On  Sept.  25,  2020,  the  AUC  released  a  decision  in  which  it  approved  the 
construction and operation of the facility, but denied the application for the Industrial System Designation. We are in 
ongoing commercial and technical discussions with ET Canada relative to the project at K3, or potentially developing a 
new project at another site owned and/or operated by ET Canada

5. Maintain a strong financial position
We intend to remain disciplined in our capital investment strategy and continue to build on our already strong financial 
position.

We currently have access to $2.1 billion in liquidity, including $703 million in cash. During 2020, we closed an AU$800 
million offering ("TEC Offering"), through TEC Hedland Pty Ltd. ("TEC"), a subsidiary of the Corporation, and received 
$400 million of the second and final tranche of the $750 million strategic financing from Brookfield. We repaid a $400 
million  medium-term  note  due  on  Nov.  25,  2020.  Further  to  the  final  closings  of  the  recently  announced  dropdown 
transaction to TransAlta Renewables, the Corporation has reached its target balance of $1.2 billion of senior corporate 
debt. In 2019, we received the first tranche of the Brookfield Investment for $350 million, increased our credit facilities 
by $200 million to a total of $2.2 billion while extending the maturity of the term by one year, and successfully obtained 
US$126 million of tax equity financing associated with the US Wind Projects.  

The  Clean  Energy  Investment  Plan  is  being  funded  from  the  cash  raised  through  the  Brookfield  Investment,  cash 
generated  from  operations  and  capital  raised  through  TransAlta  Renewables.  For  further  details  on  the  Brookfield 
Investment and TEC Offering, please refer to the Significant and Subsequent Events section of this MD&A.

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Management’s Discussion and Analysis

On Dec. 31, 2020, the power purchase arrangement for many of our Alberta hydro facilities and Keephills 1 and 2 units 
expired  and,  effective  Jan.  1,  2021,  these  facilities  began  operating  on  a  merchant  basis  in  the  Alberta  market.  The 
Management of the Alberta Portfolio
facilities are dispatched to benefit from the price volatility in the Alberta energy-only electricity market and to provide 
ancillary services. As such, they are to be part of our Alberta electricity portfolio optimization activities. The variability 
in production by facility is driven by the diversity in our fuel types, which enables portfolio management. The Alberta 
portfolio of production includes hydro, wind, energy storage and thermal units. A portion of the baseload of the portfolio 
is hedged to provide cash flow certainty. 

Our growth projects are focused on sustaining our current operations and supporting our growth strategy in our Clean 
Energy  Investment  Plan.  A  summary  of  the  status  of  the  significant  growth  and  major  projects  in  the  Clean  Energy 
Growth and Conversion to Gas Expenditures
Investment Plan is outlined below:

Total project

Estimated
spend

Spent to
date(1)

Estimated 
spend in 
2021

Target 
completion 
date(2)

Details

Project

Big Level wind
   development project(3)

  225  - 240

234 

Antrim wind
   development project(4)

  100  - 110

Pioneer gas pipeline
   partnership

  95  - 100

106 

105 

Skookumchuck wind
   development project(5,6)

  160  - 170

86 

1  Commissioned 
in 2019

1  Commissioned 
in 2019

—  Commissioned 
in 2019

90 MW wind project with a 15-year PPA

29 MW wind project with two 20-year PPAs

50 per cent ownership in the 120 km natural 
gas pipeline to supply gas to Sundance and 
Keephills

—  Commissioned 
in 2020

Option to purchase a 49 per cent ownership 
in the 136.8 MW wind project with a 20-
year PPA

Windrise wind
   development project(6)

  270  - 285

205 

68 

H2 2021 207 MW wind project with a 20-year 

WindCharger battery(7)

7  - 8

Boiler conversions

  120  - 200

Repowering

  800  - 825

Kaybob cogeneration
   project

  105  - 115

7 

75 

113 

48 

Total

 1,882  -  2,053   

979 

Renewable Electricity Support Agreement 
with AESO

—  Commissioned 
in 2020

10 MW/ 20 MWh utility-scale Battery 
Storage Project

40  2020 to 2021 Conversion to gas at Alberta Thermal

298 

Q4 2023 Repower Sundance Unit 5 to a combined 

cycle design

40 

448 

TBD(8) 40 MW cogeneration project with ET 

Canada

(1) Represents cumulative amounts spent as of Dec. 31, 2020.
(2) H1 is defined as the first half of the year and H2 is defined as the second half of the year.
(3) The numbers reflected above are in Canadian dollars, but the actual cash spend on this project is in US dollars and therefore these amounts will fluctuate with 
changes in foreign exchange rates. The estimated total spend is approximately US$173 million to US$185 million, spent to date is US$179 million and estimated 
remaining spend in 2021 is US$1 million. TransAlta Renewables funded a portion of the construction costs using its existing liquidity and the remaining was funded 
with tax equity financing.
(4) The numbers reflected above are in Canadian dollars, but the actual cash spend on this project is in US dollars and therefore these amounts will fluctuate with 
changes  in  foreign  exchange  rates.  The  estimated  total  spend  is  approximately  US$77  million  to  US$85  million,  spent  to  date  is  US$80  million  and  estimated 
remaining spend in 2021 is US$1 million. TransAlta Renewables funded a portion of the construction costs using its existing liquidity and the remaining was funded 
with tax equity financing. 
(5) The numbers reflected above are in Canadian dollars, but the actual cash spent on this project is in US dollars. The total cash spent was US$66 million, with the 
remainder funded through tax equity financing of $77 million (US$59 million).
(6)  The  economic  interest  in  Skookumchuck  will  be  sold  to  TransAlta  Renewables  in  the  first  half  of  2021.  The  Windrise  wind  development  project  was  sold  to 
TransAlta Renewables on Feb. 26, 2021. 
(7) The WindCharger project was acquired by TransAlta Renewables in 2020. Amounts shown are net of expected government reimbursements.
(8) Timing of the Kaybob cogeneration project is to be determined subject to ongoing commercial and technical discussions with ET Canada, as described above.

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Highlights
Year ended Dec. 31
Consolidated Financial Highlights
Adjusted availability (%)

Production (GWh)

Revenues

Fuel, carbon compliance and purchased power 

Operations, maintenance and administration
Net earnings (loss) attributable to common shareholders(1)
Cash flow from operating activities
Comparable EBITDA(1,2)
Funds from operations(1,2)
Free cash flow(1,2)

Net earnings (loss) per share attributable to common shareholders, basic and
    diluted
Funds from operations per share(1,2)
Free cash flow per share(1,2)

Dividends declared per common share
Dividends declared per preferred share(3)

As at Dec. 31

Total assets
Total consolidated net debt(2,4)
Total long-term liabilities(5)

2020

 90.3 

24,980 

2,101 

968 

472 

(336)   

702 

927 

685 

358 

(1.22)   

2.49 

1.30 

0.22 

1.27 

2020

9,747 

3,175 

5,376 

2019

90 

29,071 

2,347 

1,086 

475 

52 

849 

984 

757 

435 

0.18 

2.67 

1.54 

0.12 

0.78 

2019

9,508 

3,110 

4,329 

2018

 91.3 

28,409 

2,249 

1,100 

515 

(248) 

820 

1,161 

927 

524 

(0.86) 

3.23 

1.83 

0.20 

1.29 

2018

9,428 

3,141 

4,414 

(1) Includes $157 million received from the Balancing Pool for the early termination of Sundance B and C PPAs in the first quarter of 2018 and $56 million received 
on settlement of the dispute with the Balancing Pool in the third quarter of 2019.
(2) These items are not defined and have no standardized meaning under IFRS. Presenting these items from period to period provides management and investors with 
the ability to evaluate earnings trends more readily in comparison with prior periods’ results. Please refer to the Discussion of Consolidated Financial Results section of 
this MD&A for further discussion of these items, including, where applicable, reconciliations to measures calculated in accordance with IFRS. See also the Additional 
IFRS Measures and Non-IFRS Measures section of this MD&A.
(3) Weighted average of the Series A, B, C, E and G preferred share dividends declared. Dividends declared vary year over year due to timing of dividend declarations.
(4) Total consolidated net debt includes long-term debt, including current portion, amounts due under credit facilities, exchangeable securities, US tax equity financing 
and lease liabilities, net of available cash and cash equivalents, the principal portion of restricted cash on our subsidiary TransAlta OCP LP ("TransAlta OCP") and the 
fair  value  of  economic  hedging  instruments  on  debt.  See  the  table  in  the  Financial  Capital  section  of  this  MD&A  for  more  details  on  the  composition  of  total 
consolidated net debt.
(5) Certain comparative figures have been reclassified to conform to the current period’s presentation. These reclassifications did not impact previously reported net 
earnings.

We  showed  strong  performance  and  results  within  the  current  year,  advancing  our  Clean  Energy  Investment  Plan  by 
accelerating our conversion to gas strategy, successfully managing our business during a global pandemic and keeping 
our  people  healthy  and  safe.  We  achieved  these  objectives  despite  the  unfavourable  impacts  of  COVID-19, including 
reduced electricity demand load, delays in construction and additional costs associated with new safety protocols and 
protective equipment required to effectively and safely operate our business. In spite of these challenges, we delivered 
strong  operational  performance  and  financial  results  in  line  with  our  guidance  for  comparable  EBITDA  and  free  cash 
flow ("FCF").

FCF, one of the Corporation's key financial metrics, totalled $358 million in 2020, down $77 million compared to last 
year. FCF, excluding the PPA Termination Payment received in 2019, decreased by $21 million compared to 2019. The 
decline  was  driven  primarily  by  lower  segmented  cash  flows  at  the  Alberta  Thermal  segment  and  higher  sustaining 
capital expenditures, partially offset by strong cash flows for Centralia and lower distributions paid to subsidiaries' non-
controlling interests. Segmented cash flows for 2020 are consistent with 2019. Lower power demand and production in 
our Alberta Thermal segment and the impact of the total return swap recognized in 2019 in the Corporate segment was 
offset by higher performance in our Centralia, Wind and Solar, North American Gas and Energy Marketing segments. 
Significant  changes  in  segmented  cash  flows  are  highlighted  in  the  Segmented  Comparable  Results  section  of  this 
MD&A.

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Management’s Discussion and Analysis
Management’s Discussion and Analysis

Adjusted  availability  for  2020  was  90.3  per  cent  compared  to  90.0  per  cent  in  2019.  Lower  planned  and  unplanned 
outages  and  derates  within  the  generation  segments  were  offset  by  the  planned  outage  at  Alberta  Thermal  for  the  
Sundance Unit 6 turnaround and conversion to gas outage.  

Production  for  2020  was  24,980  gigawatt  hours  ("GWh")  compared  to  29,071  GWh  in  2019.  Overall,  the  production 
decrease was primarily due to planned outages, curtailments at Alberta Thermal and increased dispatch optimization at 
Alberta  Thermal  and  Centralia  due  to  lower  merchant  pricing,  which  was  partially  offset  by  higher  production  from 
higher wind and hydro resources and a full year of production at the Big Level and Antrim facilities. There was reduced 
electricity demand in North America due to COVID-19, which also had a significant impact on production. 

Revenues  for  2020  decreased  by  $246  million  compared  to  2019,  as  we  saw  lower  demand  and  power  prices  across 
North America. This was partially offset by a full year of production from the Big Level and Antrim facilities in the Wind 
and Solar segment and the acquisition of the Ada facility during the year in the North American Gas segment. 

Fuel, carbon compliance and purchased power costs in 2020 decreased by $118 million compared to 2019. Fuel, carbon 
compliance  and  purchased  power  costs  were  impacted  by  lower  production  in  the  year,  offset  by  higher  coal  costs  at 
Alberta  Thermal  and  by  the  additional  costs  of  production  of  the  Ada  facility.  Coal  costs  include  a  writedown  of  coal 
inventory  and  increased  depreciation  resulting  from  the  decision  to  accelerate  the  closure  of  the  Highvale  mine.  Our 
ability to co-fire with natural gas assisted in reducing fuel costs as co-firing allows us to produce fewer GHG emissions 
than 100 per cent coal combustion and lowers our GHG compliance costs.  

Operations, maintenance and administration ("OM&A") expenses for 2020 decreased by $3 million compared to 2019. 
OM&A  decreased  due  to  tighter  cost  controls,  reduced  staffing  in  line  with  conversion  to  gas  transition  plans,  lower 
production at Centralia and Alberta Thermal, lower labour costs across multiple segments and lower legal fees. This was 
partially offset by the impact of the total return swap recognized in 2019 of $15 million, additional operating costs from 
new  facilities  including  Big  Level,  Antrim  and  Ada,  and  the  renegotiation  of  the  Fort  Saskatchewan  maintenance 
agreement. Excluding the impact of the total return swap and new facilities, OM&A decreased by $28 million.  

Comparable EBITDA decreased by $57 million compared to 2019. After adjusting for the PPA Termination Payments 
for  2019  and  the  AESO  line  loss  adjustment  of  $8  million,  comparable  EBITDA  increased  by  $7  million  compared  to 
2019. Comparable EBITDA increased as a result of the new facilities at the Wind and Solar segment, higher comparable 
EBITDA in Centralia and continued strong performance in the Energy Marketing segment. This was partially offset by 
lower  production  at  Alberta  Thermal  as  a  result  of  lower  merchant  demand.  Significant  changes  in  segmented 
comparable EBITDA are highlighted in the Segmented Comparable Results within this MD&A.

Net loss attributable to common shareholders for 2020 was $336 million compared to earnings of $52 million in 2019.
Net loss attributable to common shareholders has been impacted by higher interest expense associated with the TEC 
Offering and the second tranche of the Brookfield Investment, higher depreciation from acceleration of the conversion 
to gas, gains recognized on the Keephills 3 and Genesee 3 asset swap that occurred in 2019, the $56 million settlement 
on the Sundance B and C PPAs in 2019 and further impacts related to our decisions to accelerate our transition to gas, 
including:
▪
▪ Writedown of $37 million of coal inventory; 
▪
▪

Onerous provision of $29 million on the coal supply contract for Sheerness; and
Impairment of $70 million associated with the retirement of Sundance 3.

Higher depreciation as we accelerate the closure of the Highvale mine; 

TransAlta Corporation    |    2020  Annual Integrated Report

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Ability to Deliver Financial Results
The metrics we use to track our performance are comparable EBITDA and FCF. The following table compares target to 
actual amounts for each of the three past fiscal years:

Year ended Dec. 31

Comparable EBITDA

FCF

Target(1)
Actual
Adjusted actual(2)
Target(1)

2020

2019

2018

925-1,000

875-975 1,000-1,050

927 

927 

984 

928 

1,161 

1,004 

325-375

350-380

300-350

Actual     

Adjusted actual(2)

358 

358 

435 

379 

524 

367 

(1) Represents our revised outlook. In the fourth quarter of 2019, we revised our FCF target from a range of $270 million to $330 million to a range of $350 million to 
$380 million. As a result of strong performance in the first quarter of 2018, we revised the following 2018 targets: comparable EBITDA from the previously 
announced target range of $950 million to $1,050 million to $1,000 to $1,050 million, FCF target range from $275 million to $350 million to the target range of 
$300 million to $350 million. 
(2) 2019 and 2018 were adjusted for the PPA Termination Payments as these were not included in the targets. 

On  Dec.  23,  2020,  the  Corporation  announced  that  it  had  entered  into  definitive  agreements  for  the  acquisition  by 
Significant and Subsequent Events
TransAlta Renewables of its 100 per cent direct interest in the 207 MW Windrise wind project located in the Municipal 
TransAlta Renewables Acquisitions
District of Willow Creek, Alberta; a 49 per cent economic interest in the 137 MW Skookumchuck wind facility located 
across  Thurston  and  Lewis  counties  in  Washington  State;  and  a  100  per  cent  economic  interest  in  the  29  MW  Ada 
cogeneration facility located in Ada, Michigan. TransAlta Renewables' acquisition of the Windrise wind project closed on 
Feb. 26, 2021, and the acquisition of the economic interests in the Ada facility and the Skookumchuck wind facility are 
expected  to  close  in  April  2021.  The  total  acquisition  value  for  the  portfolio  of  assets  is  expected  to  be  $439  million, 
which  includes  the  remaining  construction  costs  for  the  Windrise  wind  project.  TransAlta  Renewables  will  fund  the 
acquisition  and  remaining  construction  costs  with  the  proceeds  from  the  TEC  Hedland  financing  as  further  described 
below.

On Oct. 22, 2020, TEC, a subsidiary of the Corporation, closed an AU$800 million senior secured note offering, by way 
of a private placement, which is secured by, among other things, a first ranking charge over all assets of TEC. The TEC 
TEC Hedland Pty Ltd. Secures AU$800 Million Financing
Offering  bears  interest  at  4.07  per  cent  per  annum,  payable  quarterly  and  maturing  on  June  30,  2042,  with  principal 
payments starting on March 31, 2022. The TEC Offering has a rating of BBB by Kroll Bond Rating Agency. 

TransAlta Renewables has received $480 million (AU$515 million) of the proceeds from the TEC Offering through the 
redemption  of  certain  intercompany  structures.  An  additional  AU$200  million  has  been  loaned  to  TransAlta 
Renewables by TransAlta Energy (Australia) Pty Ltd., which is a subsidiary of TransAlta. The loan bears interest at 4.32 
per  cent  and  will  be  repaid  by  Oct.  23,  2022,  or  on  demand.  The  remaining  proceeds  from  the  TEC  Offering  were  set 
aside for required reserves and transaction costs.

TransAlta Renewables used a portion of the proceeds from the redemption and the intercompany loan to repay existing 
indebtedness on its credit facility and to acquire the asset and economic interests noted above. 

The World Health Organization declared a Public Health Emergency of International Concern relating to COVID-19 on 
Jan. 30, 2020, which they subsequently declared, on March 11, 2020, as a global pandemic. The outbreak of COVID-19 
COVID-19
has  resulted  in  governments  worldwide  enacting  emergency  measures  to  constrain  the  spread  of  the  virus.  These 
measures, which include the implementation of travel bans, self-imposed quarantine periods, self-isolation, physical and 
social distancing, and the closure of non-essential businesses, have caused significant disruption to businesses globally, 
which has resulted in an uncertain and challenging economic environment.

The Corporation continued to operate under its business continuity plan, which focused on ensuring that: (a) employees 
who could work remotely did so and (b) employees who operate and maintain our facilities, and who were not able to 
work remotely, were able to work safely and in a manner that ensured they remained healthy. During the second and 
third quarters of 2020, the Corporation successfully brought employees who were working remotely back to the office 

M12

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TRANSALTA CORPORATION M12

 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

without compromising health and safety standards. In November 2020, as a result of rising COVID-19 case counts in the 
Province of Alberta and in light of office attendance restrictions eventually imposed by the Government of Alberta, staff 
at  TransAlta's  head  office  returned  to  remote  work  protocols.  All  of  TransAlta's  offices  and  sites  follow  strict  health 
screening  and  social  distancing  protocols  with  personal  protective  equipment  readily  available  and  in  use.  Further, 
TransAlta  maintains  travel  bans  aligned  to  local  jurisdictional  guidance,  enhanced  cleaning  procedures,  revised  work 
schedules,  contingent  work  teams  and  the  reorganization  of  processes  and  procedures  to  limit  contact  with  other 
employees and contractors on-site.

While  our  results  have  been  impacted  by  price  and  demand  as  a  result  of  COVID-19,  all  of  our  facilities  continue  to 
remain fully operational and capable of meeting our customers' needs. The Corporation continues to work and serve all 
of  our  customers  and  counterparties  under  the  terms  of  their  contracts.  We  have  not  experienced  interruptions  to 
service  requirements.  Electricity  and  steam  supply  continues  to  remain  a  critical  service  requirement  to  all  of  our 
customers and has been deemed an essential service in our jurisdictions.

During the second quarter of 2020, the Government of Canada passed the Canada Emergency Wage Subsidy as part of 
its COVID-19 Economic Response Plan. The program's intent is to support employment by providing expense relief to 
companies  that  experienced  revenue  declines  in  2020.  In  January  2021,  TransAlta  applied  for  support  under  this 
program  and  expects  to  receive  $8  million  (pre-tax)  for  application  periods  in  2020.  This  represents  a  portion  of  the 
funding that the Corporation is eligible for and funds will be used to support a strategy to add incremental employment 
within the Corporation. The Corporation will recognize these wage subsidies as funds are received in 2021. 

The  Corporation  continues  to  maintain  a  strong  financial  position  due  in  part  to  its  long-term  contracts  and  hedged 
positions. At year-end, we had access to $2.1 billion in liquidity, including $703 million in cash and cash equivalents.

On  March  22,  2019,  the  Corporation  entered  into  an  agreement  (the  "Investment  Agreement")  whereby  Brookfield 
agreed  to  invest  $750  million  in  the  Corporation.  The  Brookfield  Investment  provides  the  financial  flexibility  to  drive 
Strategic Investment by Brookfield
TransAlta's  transition  to  100  per  cent  clean  electricity  by  2025,  recognizes  the  anticipated  future  value  of 
TransAlta's  Alberta  Hydro  Assets  and  accelerates  the  Corporation's  plan  to  return  capital  to  its  shareholders.  As 
discussed  in  the  Corporate  Strategy  section  of  this  MD&A,  the  Brookfield  Investment  was  key  to  the  implementation 
and advancement of TransAlta's Clean Energy Investment Plan, including facilitating or accelerating several key pillars 
of our strategic plan. 

Under  the  terms  of  the  Investment  Agreement,  Brookfield  agreed  to  invest  $750  million  in  TransAlta  through  the 
purchase  of  exchangeable  securities,  which  are  exchangeable  by  Brookfield  into  an  equity  ownership  interest  in 
TransAlta’s  Alberta  Hydro  Assets  in  the  future  at  a  value  based  on  a  multiple  of  the  Alberta  Hydro  Assets’  future-
adjusted EBITDA. Upon entering into the Investment Agreement and as required under the terms of the agreement, the 
Corporation  paid  Brookfield  a  $7.5  million-structuring  fee.  A  commitment  fee  of  $15  million  was  also  paid  upon 
completion of the initial funding. These transaction costs were recognized as part of the carrying value of the unsecured 
subordinated debentures issued at that time. 

On  May  1,  2019,  Brookfield  invested  the  initial  tranche  of  $350  million  in  exchange  for  seven  per  cent  unsecured 
subordinated debentures due May 1, 2039. On Oct. 30, 2020, Brookfield invested the second tranche of $400 million in 
consideration  for  redeemable,  retractable  first  preferred  shares.  The  proceeds  from  the  first  tranche  were  used  to 
accelerate our conversion to gas program. The Corporation intends to use the proceeds from the second tranche of the 
financing  to  advance  the  Corporation’s  conversion  to  gas  program,  fund  other  growth  initiatives  and  for  general 
corporate purposes. 

TransAlta has indicated that it intends to return up to $250 million of capital to shareholders through share repurchases 
within three years of receiving the first tranche of the Brookfield Investment. As of Dec. 31, 2020, 15,068,900 common 
shares have been repurchased in 2020 and 2019  for $129 million under the normal course issuer bid ("NCIB") program. 

Under  the  terms  of  the  Investment  Agreement,  Brookfield  committed  to  purchase  TransAlta  common  shares  on  the 
open  market  to  increase  its  share  ownership  in  TransAlta  to  not  less  than  nine  per  cent  by  May  1,  2021. As  of  Jan.  8, 
2021,  Brookfield,  through  its  affiliates,  held,  owned  or  had  control  over  an  aggregate  of 33,845,685  common  shares, 
representing  approximately  12.4  per  cent  of  the  issued  and  outstanding  common  shares,  calculated  on  an  undiluted 
basis. In connection with the Investment Agreement, Brookfield is entitled to nominate two directors for election to the 
Board.

TransAlta Corporation    |    2020  Annual Integrated Report

M13

TRANSALTA CORPORATION M13

Management’s Discussion and Analysis

Management’s Discussion and Analysis

In accordance with the terms of the Investment Agreement, TransAlta has formed a Hydro Assets Operating Committee
consisting of two representatives from Brookfield and two representatives from TransAlta to collaborate in connection 
with the operation and maximization of the value of the Alberta Hydro Assets. In connection with this, the Corporation 
has  committed  to  pay  Brookfield  an  annual  fee  of  $1.5  million  for  six  years  beginning  May  1,  2019  (the  "Brookfield 
Hydro Fee"), which is recognized in the OM&A expense on the Consolidated Statements of Earnings (Loss). 

On April 23, 2019, the Mangrove Partners Master Fund Ltd. ("Mangrove") commenced an action in the Ontario Superior 
Court of Justice alleging, among other things, oppression by the Corporation and its directors and seeking to set aside 
the Brookfield Investment. TransAlta believes the claim is wholly lacking in merit and is taking all steps to defend against 
the allegations. This matter was adjourned due to the COVID-19 pandemic and is now scheduled to proceed to trial for 
three weeks starting April 19, 2021. Please refer to the Other Consolidated Analysis section of this MD&A for additional 
information on the Mangrove proceedings.

The Corporation owns a two-unit 1,340 MW thermal coal-fired facility in Centralia, Washington, in relation to which we 
have  entered  into  a  number  of  multiple  year  medium-  and  short-term  energy  sales  agreements.  In  2011,  Washington 
Centralia Unit 1 Retirement
State passed the TransAlta Energy Transition Bill (chapter 180, Laws of 2011) (the "Bill'') allowing the Centralia thermal 
facility to comply with the state's GHG emissions performance standards by ceasing coal generation in one of its two 
boilers  by  the  end  of  2020,  and  the  other  by  the  end  of  2025.  The  Bill  removed  restrictions  that  had  previously  been 
imposed  on  the  facility  limiting  the  duration  of  new  contracts  from  the  facility  and  limiting  the  technology  that  the 
facility would be required to implement for nitrogen oxide ("NOx ") controls. Centralia Unit 1 was retired from service 
effective Dec. 31, 2020.

During  the  third  quarter  of  2020,  the  Board  approved  the  accelerated  shutdown  of  the  Highvale  mine  by  the  end  of 
2021 and, accordingly, the useful life of the related assets was adjusted to align with the Corporation's conversion to gas 
Accelerated Shutdown of the Highvale Mine
plans. As at Dec. 31, 2020, the carrying value of the Highvale mine, including property, plant and equipment ("PP&E"), 
right-of-use  assets  and  intangible  assets,  was $373  million.  As  a  result,  our  cost  per  tonne  of  coal  will  increase  as  the 
fixed coal costs will be spread over lower volumes. During the second half of 2020, the increased depreciation expense 
and our cost per tonne of coal exceeded the net realizable value of the coal inventory and a writedown of $37 million 
was  recognized  in  fuel,  carbon  compliance  and  purchased  power.  As  the  Highvale  mine  moves  into  the  reclamation 
phase, our anticipated coal consumption is expected to continue to decline, further increasing the cost of coal and future 
expected writedowns in fuel costs. In 2020, we started the year with 2.1 million tonnes of coal inventory, during which 
we mined an additional 2.3 million tonnes and consumed 3.5 million tonnes. We ended the year with approximately one 
million  tonnes  of  coal  inventory  and  we  will  continue  to  actively  deplete  our  coal  stock  as  we  wind  down  our  mining 
activity by the end of 2021. 

On May 26, 2020, the Corporation announced that the TSX accepted the notice filed by the Corporation to implement 
an NCIB for a portion of its common shares. Pursuant to the NCIB, the Corporation may repurchase up to a maximum of 
Normal Course Issuer Bid 
14,000,000 common shares, representing approximately 7.02 per cent of its public float of common shares, as at May 
25, 2020. Purchases under the NCIB  may  be  made through open market transactions on the TSX and any alternative 
Canadian trading platforms on which the common shares are traded, based on the prevailing market price. Any common 
shares purchased under the NCIB will be cancelled.

The period during which the Corporation is authorized to make purchases under the NCIB began on May 29, 2020 and 
ends on May 28, 2021, or such earlier date on which the maximum number of common shares are purchased under the 
NCIB or the NCIB is terminated at the Corporation's election.  

Under TSX rules, not more than 228,157 common shares (being 25 per cent of the average daily trading volume on the 
TSX  of  912,630  common  shares  for  the  six  months  ended  April  30,  2020)  can  be  purchased  on  the  TSX  on  any  single 
trading day under the NCIB, with the exception that one block purchase in excess of the daily maximum is permitted per 
calendar week.

During the year ended Dec. 31, 2020, under the current and previous NCIB, the Corporation purchased and cancelled a 
total of 7,352,600 common shares at an average price of $8.33 per common share, for a total cost of $61 million. 

M14

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TRANSALTA CORPORATION M14

Management’s Discussion and Analysis

Management’s Discussion and Analysis

On  Feb.  4,  2021,  we  announced  that  that  Dawn  Farrell,  President  and  Chief  Executive  Officer,  will  retire  from  the 
Corporation  and  the  Board  on  March  31,  2021,  after  leading  the  Corporation  for  almost  a  decade.  John  Kousinioris, 
Management Changes
currently  Chief  Operating  Officer  and,  until  his  resignation  on  Feb.  5,  2021,  President  of  TransAlta  Renewables,  will 
succeed  Ms.  Farrell  as  President  and  Chief  Executive  Officer  and  will  join  the  Board  on  April  1,  2021.  Prior  to  his 
appointment as Chief Operating Officer of TransAlta, Mr. Kousinioris held the roles of Chief Growth Officer and Chief 
Legal and Compliance Officer and Corporate Secretary at TransAlta. In the role of Chief Growth Officer, Mr. Kousinioris 
was responsible for overseeing the areas of business development, gas and renewables operations, and commercial and 
energy marketing. 

On  Feb.  6,  2021,  Todd  Stack,  the  Executive  Vice  President,  Finance  and  Chief  Financial  Officer  of  the  Corporation, 
accepted the position of President of TransAlta Renewables. Mr. Stack was promoted to Chief Financial Officer of the 
Corporation  on  May  16,  2019.  Prior  to  being  appointed  as  Chief  Financial  Officer,  Mr.  Stack  served  as  Managing 
Director and Corporate Controller of the Corporation, and has been responsible for providing leadership and direction 
over TransAlta’s financial activities, corporate accounting, reporting, tax and corporate planning. Since joining TransAlta 
in 1990, Mr. Stack has acted as the Corporation's Treasurer, Corporate Controller, as well as a member of Corporate 
Development,  and  he  played  a  prominent  role  in  the  growth  and  the  initial  public  offering  of  TransAlta  Renewables. 
Prior to joining the finance team, Mr. Stack held a number of roles in the engineering team, including design, operations 
and project management. 

During the first quarter of 2021, Brett Gellner, our Chief Development Officer, announced he will retire effective April 
30,  2021.  Mr.  Gellner  has  been  employed  with  TransAlta  for  almost  13  years  and  during  this  time  he  has  fulfilled 
multiple  roles  in  commercial,  finance,  growth  and  strategy  and  served  as  our  Chief  Financial  Officer.  Mr.  Gellner  has 
built a reputation amongst investors and the broader community as a highly respected key leader in the power industry. 
He was central in TransAlta's recent corporate transformations and developing the Clean Energy Investment Plan. Mr. 
Gellner will remain on TransAlta Renewables' Board of Directors.

The roles of Chief Operating Officer and Chief Development Officer will not be backfilled.  

On April 21, 2020, we announced that the Board appointed John P. Dielwart as Chair of the Board, upon his re-election 
as an independent director at TransAlta’s annual shareholder meeting. As previously announced, Ambassador Gordon 
Board of Director Changes
Giffin, the previous Chair of the Board, retired from the Board after serving as Chair since 2011.

Mr. Dielwart has served as an independent director on the Board since 2014, and has also served as the Chair of the 
Governance, Safety and Sustainability Committee and as a member of the Investment Performance Committee and the 
Audit,  Finance  and  Risk  Committee  of  the  Board.  Mr.  Dielwart  is  a  founder  and  director  of  ARC  Resources  Ltd.  from 
1996 to present and served as Chief Executive Officer of ARC Resources Ltd. from 2001 to 2013. Mr. Dielwart earned a 
Bachelor of Science (Distinction) in Civil Engineering from the University of Calgary, is a member of the Association of 
Professional  Engineers  and  Geoscientists  of  Alberta  and  a  Past-Chairman  of  the  Board  of  Governors  of  the  Canadian 
Association of Petroleum Producers. Mr. Dielwart is also a director and former Co-Chair of the Calgary and Area Child 
Advocacy Centre. In 2015, Mr. Dielwart was inducted into the Calgary Business Hall of Fame. 

Also  effective  April  21,  2020,  Sandra  Sharman  joined  the  Board.  Ms.  Sharman  leads  the  Human  Resources, 
Communications, Marketing and Enterprise Real Estate teams at CIBC, supporting execution of business strategy and 
enabling a world-class culture. A proven business leader with over 30 years of human resources and financial services 
experience in both Canada and the US, Ms. Sharman has played a leading role in shaping an inclusive and collaborative 
culture at CIBC, focused on empowering and enabling employees to reach their full potential. Ms. Sharman assumed the 
leadership  of  Human  Resources  at  CIBC  in  2014  and  added  accountability  for  communications  and  public  affairs  in 
2017.  Since  2017,  her  portfolio  has  expanded  to  encompass  purpose,  brand,  marketing  and  most  recently,  corporate 
real  estate.  Ms.  Sharman  earned  her  Masters  of  Business  Administration  (MBA)  from  Dalhousie  University.  At 
TransAlta, Ms. Sharman is a member of the Governance, Safety and Sustainability Committee and the Human Resources 
Committee.

Robert  Flexon  resigned  from  the  Board  effective  Aug.  1,  2020.  Mr.  Flexon assumed  the  role  of  Chair  of  the  Board  of 
Directors of PG&E Corporation (“PG&E”) and resigned from the Board due only to the potential for perceived conflicts 
of interests between PG&E and the Corporation.

Please refer to the Corporate Strategy section of this MD&A for further updates on ongoing projects. 

TransAlta Corporation    |    2020  Annual Integrated Report

M15

TRANSALTA CORPORATION M15

Management’s Discussion and Analysis

Management’s Discussion and Analysis

Please refer to Note 4 of the consolidated financial statements within our 2020 Annual Integrated Report for significant 
events impacting both prior and current year results. 

Segmented  cash  flow  generated  by  the  business  measures  the  net  cash  generated  by  each  of  our  segments  after 
sustaining  and  productivity  capital  expenditures,  principal  payments  on  lease  liabilities,  reclamation  costs  and 
Segmented Comparable Results
provisions. This is the cash flow available to pay our interest and cash taxes, make distributions to our non-controlling 
partners,  pay  dividends  to  our  preferred  shareholders,  grow  the  business,  pay  down  debt  and  return  capital  to  our 
shareholders.

The table below shows the segmented cash flow generated by the business by each of our segments:

Year ended Dec. 31
Segmented cash flow(1)
   Hydro

   Wind and Solar
   North American Gas(2)

   Australian Gas
   Alberta Thermal(3)(4)
   Centralia(3)
Generation segmented cash flow

   Energy Marketing
   Corporate(5)
Total segmented cash flow

Total segmented cash flow – excluding the PPA Termination Payments

2020

2019

2018

83 

241 

109 

114 

47 

122 

716 

114 

(100)   

730 

730 

93 

206 

99 

112 

214 

54 

778 

105 

(92)   

791 

735 

96 

211 

228 

136 

279 

63 

1,013 

33 

(107) 

939 

782 

(1) Segmented cash flow is a non-IFRS measure and has no standardized meaning under IFRS. Please refer to the Additional IFRS Measures and Non-IFRS Measures 
section for further details.
(2) This segment was previously known as the Canadian Gas segment but was renamed with the acquisition of the US cogeneration facility in the second quarter of 
2020. 
(3) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.
(4) Includes $157 million received from the Balancing Pool for the early termination of Sundance B and C PPAs in the first quarter of 2018 and $56 million received 
on settlement of the dispute with the Balancing Pool in the third quarter of 2019. 
(5) Includes gains and losses on the total return swap.

Segmented cash flow generated by the business, after adjusting for the PPA Termination Payments, was consistent in 
2020 compared to 2019, primarily due to higher performance in our Centralia, Wind and Solar, North American Gas and 
Energy Marketing segments. This was offset by lower power demand and production in our Alberta Thermal segment 
and the impact of the total return swap recognized in 2019 in the Corporate segment.

Cash flow in 2019, after adjusting for the PPA Termination Payments, was down $47 million in 2019 compared to 2018, 
mainly  due  to  the  expiry  of  the  Mississauga  Non-Utility  Generator  ("NUG")  Enhanced  Dispatch  Contract  (the  "NUG 
Contract") and lower scheduled repayments on the Poplar Creek finance lease, partially offset by strong cash flows from 
Energy Marketing as well as lower sustaining capital expenditures.

M16

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TRANSALTA CORPORATION M16

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year ended Dec. 31
Hydro
Production

Energy contracted
Alberta Hydro PPA assets (GWh)(1)
Other hydro energy (GWh)(1)
Energy merchant

Other hydro energy (GWh)

Total energy production (GWh)
Ancillary service volumes (GWh)(2)

Gross installed capacity (MW)

Revenues

Alberta Hydro PPA assets energy

Alberta Hydro PPA assets ancillary
Capacity payments received under Alberta Hydro PPA(3) 
Other revenue(4)
Total gross revenues
Net payment relating to Alberta Hydro PPA(5)

Revenues

Fuel and purchased power

Comparable gross margin

Operations, maintenance and administration

Taxes, other than income taxes

Comparable EBITDA

Deduct:

Sustaining capital:

Routine capital

Planned major maintenance

Total sustaining capital expenditures

Productivity capital

Total sustaining and productivity capital

Provisions

Decommissioning and restoration costs settled

Hydro cash flow

Management’s Discussion and Analysis

Management’s Discussion and Analysis

2020

2019

2018

1,703 

353 

76 

2,132 

2,857 

926 

87 

66 

60 

45 

258 

(106)   

152 

8 

144 

37 

2 

105 

12 

8 

20 

— 

20 

2 

— 

83 

1,653 

331 

61 

2,045 

2,978 

926 

101 

90 

57 

44 

292 

(136)   

156 

7 

149 

36 

3 

110 

7 

7 

14 

1 

15 

— 

2 

93 

1,519 

306 

81 

1,906 

3,265 

926 

90 

104 

56 

41 

291 

(135) 

156 

6 

150 

38 

3 

109 

4 

8 

12 

1 

13 

— 

— 

96 

(1) Alberta Hydro PPA assets include 13 hydro facilities on the Bow and North Saskatchewan river systems included under the PPA legislation. Other hydro facilities 
include our hydro facilities in BC and Ontario and the hydro facilities in Alberta not included in the legislated PPAs. 
(2) Ancillary services as described in the AESO Consolidated Authoritative Document Glossary.
(3) Capacity payments include the annual capacity charge as described in the Power Purchase Arrangements Determination Regulation AR 175/2000, available from 
Alberta Queen's Printer. The PPA expired on Dec. 31, 2020.
(4) Other revenue includes revenues from our non-PPA hydro facilities, our transmission business and other contractual arrangements including the flood mitigation 
agreement with the Alberta government and black start services. 
(5) The net payment relating to the Alberta Hydro PPA represents the Corporation's financial obligations for notional amounts of energy and ancillary services in 
accordance with the Alberta Hydro PPA that expired on Dec. 31, 2020. 

TransAlta Corporation    |    2020  Annual Integrated Report

M17
TRANSALTA CORPORATION M17

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

2020 
Production for 2020 increased by 87 GWh over 2019, primarily due to higher water resources.

Ancillary  service  volumes  for  2020  decreased  by  121  GWh  compared  to  2019.  This  was  primarily  due  to  the  AESO 
procuring lower ancillary volumes in 2020. Additionally, there has been weaker market conditions for ancillary services, 
partially due to COVID-19 and reduced industrial demand in Alberta.

Gross Revenues per MWh

Alberta Hydro PPA assets energy ($/MWh)

Alberta Hydro PPA assets ancillary ($/MWh)

2020

2019

2018

$51

$23

$61

$30

$59

$32

In 2020, Alberta Hydro energy revenue per MWh of production decreased by approximately $10 per MWh, compared 
to 2019, as result of lower merchant prices in Alberta.

In 2020, Alberta Hydro ancillary revenue per MWh of production decreased by approximately $7 per MWh, compared 
to  2019.  Lower  realized  prices  were  primarily  due  to  unfavourable  market  conditions  in  Alberta  in 2020.  For  further 
discussion on the market conditions and pricing, please refer to the Competitive Forces section of this MD&A. 

Total gross revenues for 2020 decreased $34 million compared to 2019, as lower energy and ancillary services revenues 
resulted from lower Alberta pricing and lower demand for ancillary products, partially offset by higher water resources.

Comparable  EBITDA  for  2020  decreased  by  $5  million  compared  to  2019,  from  lower  revenues  partially  offset  by 
recoveries  allocated  by  the  AESO  related  to  the  AESO  transmission  line  loss  proceeding.  For  additional  information, 
please see Note 36 Commitments & Contingencies within the financial statements.

Sustaining capital expenditures for 2020 were $6 million higher than in 2019, due to more planned outages in 2020.

Hydro's  cash  flow  decreased  by  $10  million  for  2020  compared  to  2019  mainly  due  to  lower  EBITDA  and  higher 
sustaining capital spend, partially offset by lower settlements of decommissioning and restoration costs.

2019 
Production for 2019 increased by 139 GWh over 2018 primarily due to higher water resources.

Total gross revenues were comparable to 2018 as the Hydro business optimized its revenue through a combination of
energy sales and ancillary services, which allows us to maintain consistent revenues year-over-year.

Comparable EBITDA for 2019 increased by $1 million compared to 2018, as we were able to reduce OM&A due to cost-
saving initiatives, while absorbing the $1.5 million Brookfield Hydro Fee. 

Hydro's cash flow decreased by $3 million for 2019 compared to 2018 mainly due to higher capital expenditures and
decommissioning costs related to transmission assets.

M18

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M18

Year ended Dec. 31
Wind and Solar
Availability (%)

Contract production (GWh)

Merchant production (GWh)

Total production (GWh)
Gross installed capacity (MW)(1)

Revenues

Fuel and purchased power

Comparable gross margin

Operations, maintenance and administration

Taxes, other than income taxes
Net other operating income(2)
Comparable EBITDA

Deduct:

Sustaining capital:

Routine capital

Planned major maintenance

Total sustaining capital expenditures

Productivity capital

Total sustaining and productivity capital

Provisions

Principal payments on lease liabilities

Decommissioning and restoration costs settled
Other(2)

Wind and Solar cash flow

Management’s Discussion and Analysis

Management’s Discussion and Analysis

2020

95.1

2,871 

1,198 

4,069 

1,572 

334 

25 

309 

53 

8 

— 

248 

— 

13 

13 

1 

14 

(8)   

1 

— 

— 

241 

2019

95.0  

2,395 

960 

3,355 

1,495 

295 

16 

279 

50 

8 

(10)   

231 

2 

11 

13 

— 

13 

— 

1 

1 

10 

206 

2018

95.4 

2,363 

1,005 

3,368 

1,382 

302 

17 

285 

50 

8 

(6) 

233 

5 

8 

13 

2 

15 

— 

— 

1 

6 

211 

(1) 2020 gross installed capacity includes the WindCharger battery storage facility and our proportionate share of the Skookumchuck wind facility. The 2020 and 
2019 gross installed capacity includes the addition of Big Level and Antrim, partially offset by the reduction of wind turbines due to tower fires at Wyoming Wind and 
Summerview. 
(2) Relates to insurance proceeds included in net other operating income. 

2020 
Availability for the year ended Dec. 31, 2020, was consistent with 2019, which was in line with our expectations. 

Production  for  the  year  ended  Dec.  31,  2020,  increased  714  GWhs,  mainly  due  to  the  Big  Level  and  Antrim  wind 
facilities commencing commercial operations in December 2019 and strong wind resources across all regions in 2020, in 
particular for our Alberta wind facilities.

Comparable EBITDA for 2020 increased by $17 million compared to 2019, primarily due to the addition of the Big Level 
and Antrim wind facilities and higher production, partially offset by insurance proceeds received in 2019, lower Alberta 
pricing and the planned expiry of certain wind power production incentives in 2019. In addition, during 2020, the AESO 
began  issuing  invoices  pertaining  to  the  AESO  transmission  line  loss.  Wind  and  Solar  has  been  allocated $8  million  in 
costs in 2020, which has been reflected in fuel and purchased power within the current year. For additional information, 
please refer to Note 36 Commitments & Contingencies within the financial statements.

Sustaining and productivity capital expenditures for 2020 were consistent with 2019.

Wind  and  Solar's  cash  flow  increased  by  $35  million  for  the  year  ended  Dec.  31,  2020,  compared  to  the  prior  year, 
mainly due to higher comparable EBITDA and insurance proceeds received in 2019, partially offset by higher sustaining 
and productivity capital spend for Kent Hills foundation expenditures.

TransAlta Corporation    |    2020  Annual Integrated Report

M19
TRANSALTA CORPORATION M19

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

2019 
Availability  and  production  for  the  year  ended  Dec.  31,  2019,  was  comparable  to  2018,  which  was  in  line  with  our 
expectations. The Big Level and Antrim  wind  facilities  had minimal impact on 2019 availability and production due to 
their commercial operation occurring in late December.

Comparable EBITDA for 2019 was consistent with 2018. Higher insurance proceeds from tower fires at Wyoming Wind 
and Summerview were partially offset by a reduction in revenues due to the scheduled expiration of production-based 
incentives for three wind facilities.

Wind and Solar's cash flow decreased by $5 million for the year ended Dec. 31, 2019, compared to the prior year, mainly 
due to lower revenue.

Year ended Dec. 31
North American Gas
Availability (%)

(1)

Contract production (GWh)
Merchant production (GWh)(2)
Purchased power (GWh)(2)
Total production (GWh)
Gross installed capacity (MW)(3)

Revenues

Fuel and purchased power

Comparable gross margin

Operations, maintenance and administration

Taxes, other than income taxes

Net other operating income

Comparable EBITDA

Deduct:

Sustaining capital:

Routine capital

Planned major maintenance

Total sustaining capital expenditures

Productivity capital

Total sustaining and productivity capital

Provisions and other

Decommissioning and restoration costs settled

North American Gas cash flow

2020

96.9

1,896 

131 

(198)   

1,829 

974 

234 

66 

168 

49 

2 

— 

117 

4 

2 

6 

— 

6 

— 

2 

109 

2019

94.8  

1,655 

262 

(92)   

1,825 

945 

238 

74 

164 

44 

1 

(1)   

120 

10 

8 

18 

— 

18 

— 

3 

99 

2018

93.3 

1,620 

172 

(79) 

1,713 

945 

407 

99 

308 

48 

1 

— 

259 

4 

16 

20 

2 

22 

9 

— 

228 

(1) This segment was previously known as the Canadian Gas segment but was renamed with the acquisition of the Ada facility in the second quarter of 2020. See the 
Corporate Strategy section of this MD&A and Note 4 of the consolidated financial statements for further details.
(2) Purchased power used for dispatch optimization has been separated from merchant production in the current year. Comparable periods have been adjusted to 
reflect this change. 
(3) 2020 includes 29 MW for the acquisition of the Ada facility in the second quarter of 2020.  

M20

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M20

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

2020 
Availability  for  the  year  ended  Dec.  31,  2020,  increased  compared  to  2019,  primarily  due  to  lower  planned  and 
unplanned outages at our Fort Saskatchewan, Sarnia and Ottawa facilities, partially offset by planned outages at the Ada 
facility. 

Production was consistent with 2019. Higher customer demand at our Sarnia facility and the addition of the Ada facility 
was offset by lower Ontario market demand in 2020. Due to low power pricing in Ontario, we settled some customer 
power purchases with power purchased from the merchant market. Overall, due to the nature of our contracts, changes 
in  production  do  not  have  a  significant  financial  impact  as  our  contracts  are  structured  as  capacity  payments  with 
customer-supplied fuel or a pass-through of fuel costs. 

OM&A  costs  for  2020  were  $5  million  higher  than  in  2019,  due  to  the  addition  of  the  new  Ada  facility  and  the  new 
recontracted terms of the Fort Saskatchewan commercial agreement. 

Comparable  EBITDA  for  2020  decreased  by  $3  million  compared  to  2019,  mainly  due  to  lower  earnings  at  Fort 
Saskatchewan  as  the  new  commercial  agreement  was  negatively  impacted  by  lower  merchant  pricing  in  Alberta, 
partially offset by the addition of the Ada facility. 

Sustaining  capital  expenditures  in  2020  decreased  by  $12  million  mainly  due  to  a  major  planned  outage  for  Sarnia  in 
2019.

Cash flow at North American Gas increased by $10 million for the year ended Dec. 31, 2020, compared to the prior year 
mainly due to lower sustaining capital, partially offset by lower comparable EBITDA.

2019 
Availability for the year ended Dec. 31, 2019, increased compared to 2018, primarily due to lower planned outages at 
Fort Saskatchewan and Sarnia.

Production for the year increased by 112 GWh compared to 2018, mainly due to higher customer and market demand 
as well as lower planned outages, partially offset by higher unplanned outages.

Comparable  EBITDA  for  2019  decreased  by  $139  million  compared  to  2018  mainly  due  to  the  Mississauga  contract 
ending Dec. 31, 2018, and lower scheduled payments from the Poplar Creek finance lease. Comparable EBITDA for the 
year ended Dec. 31, 2019, includes nil (2018 — $105 million) and $20 million (2018 — $57 million) from the Mississauga 
and Poplar Creek contracts, respectively. Additionally, comparable EBITDA benefited from lower OM&A compared to
the prior year as a result of reduced overhead and operating costs.

Sustaining  capital  totalled  $18  million  in  2019,  a  decrease  of  $2  million  due  to  lower  planned  outage  costs,  partially 
offset by the timing of capital spares purchases for Sarnia.

Cash  flow  at  Canadian  Gas  decreased  by  $129  million  for  the  year  ended  Dec.  31,  2019,  compared  to  the  prior  year 
mainly due to lower comparable EBITDA.

TransAlta Corporation    |    2020  Annual Integrated Report

M21

TRANSALTA CORPORATION M21

 
 
Management’s Discussion and Analysis

Year ended Dec. 31
Australian Gas
Availability (%)

Contract production (GWh)

Gross installed capacity (MW)

Revenues

Fuel and purchased power

Comparable gross margin

Operations, maintenance and administration

Comparable EBITDA

Deduct:

Sustaining capital:

Routine capital

Planned major maintenance

Total sustaining capital expenditures

Productivity capital

Total sustaining and productivity capital

Other

Australian Gas cash flow

Management’s Discussion and Analysis

2020

93.8

1,779 

2019

90.6  

1,832 

450 

162 

6 

156 

32 

124 

3 

6 

9 

1 

10 

— 

114 

450 

160 

5 

155 

37 

118 

2 

3 

5 

1 

6 

— 

112 

2018

94.0 

1,814 

450 

165 

4 

161 

37 

124 

2 

— 

2 

— 

2 

(14) 

136 

2020 
Availability for the year ended Dec. 31, 2020, increased compared to 2019, mainly due to unplanned outages in 2019. 

Production  for 2020  decreased  compared  to 2019,  mainly  due  to  changes  in  customer  demand  at  the  South  Hedland 
facility.  Due  to  the  nature  of  our  contracts,  changes  in  production  do  not  have  a  significant  financial  impact  as  our 
contracts are structured as capacity payments with customer-supplied fuel or a pass-through of fuel costs.

Comparable EBITDA for the year ended Dec. 31, 2020, increased by $6 million compared to 2019, due to the deferral of  
legal costs associated with our dispute with Fortescue Metals Group Ltd ("FMG"), reduced staffing due to cost controls 
and the strengthening of the Australian dollar against the Canadian dollar.

Sustaining  and  productivity  capital  for 2020  increased  by  $4  million  compared  to  2019,  mainly  due  to  planned  major 
maintenance at our Southern Cross facility. 

Australian Gas' cash flow increased by $2 million in 2020, mainly due to higher comparable EBITDA, partially offset by 
higher sustaining capital expenditures. 

2019 
Availability for the year ended Dec. 31, 2019, decreased compared to 2018 mainly due to unplanned outages.

Production for 2019 was comparable to 2018. Due to the nature of our contracts, changes in production do not have a 
significant financial impact as our contracts are structured as capacity payments with customer-supplied fuel or a pass-
through of fuel costs.

Comparable EBITDA for the year ended Dec. 31, 2019, decreased by $6 million compared to 2018 due to the weakening 
of the Australian dollar and ongoing legal costs associated with our dispute with FMG.

Sustaining  and  productivity  capital  for  2019  increased  by  $4  million  compared  to  2018  mainly  due  to  planned  major 
maintenance at our Southern Cross facility.

Cash flow at Australian Gas decreased by $24 million in 2019 mainly due to lower comparable EBITDA, as well as higher 
sustaining capital expenditures. In addition, 2018 cash flow included the collection of a long-term receivable.

M22

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M22

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year ended Dec. 31
Alberta Thermal
Availability (%)

(1)

Contract production (GWh)

Merchant production (GWh)

Total production (GWh)
Gross installed capacity (MW)(2)
Revenues
Fuel, carbon compliance and purchased power(3)
Comparable gross margin

Operations, maintenance and administration

Taxes, other than income taxes

Termination of Sundance B and C PPAs

Net other operating income
Comparable EBITDA(3)
Deduct:

Sustaining capital:

Routine capital

Mine capital

Planned major maintenance

Total sustaining capital expenditures

Productivity capital

Total sustaining and productivity capital

Provisions

Principal payments on lease liabilities

Decommissioning and restoration costs settled

Other

Alberta Thermal cash flow

Management’s Discussion and Analysis

Management’s Discussion and Analysis

2020
84.8  

5,851 

4,186 

10,037 
2,866 

659 

391 

268 

131 

15 

— 
(40)   
162 

16 

7 

62 

85 

1 

86 

— 

20 

9 

— 

47 

2019

89.2 

6,927 

5,932 

12,859 
3,229 

823 

449 

374 

138 

13 

(56)   

(40)   

319 

15 

23 

34 

72 

6 

78 

(6)   

16 

17 

— 

214 

2018

91.6 

8,936 

5,304 

14,240 
3,231 

901 

526 

375 

171 

13 

(157) 

(41) 

389 

17 

42 

15 

74 

12 

86 

(10) 

14 

19 

1 

279 

(1) The Canadian Coal segment was renamed Alberta Thermal in the third quarter of 2020.
(2) All years include 406 MW for Sundance Unit 5, which is temporarily mothballed. Sheerness Unit 2's capacity was increased in 2020 following a generator rewind 
and final testing. 2019 and 2018 also include 368 MW for Sundance Unit 3, which was temporarily mothballed and then retired during the third quarter of 2020. In 
addition, the Keephills 3 and Genesee 3 asset swap resulted in a net 2 MW reduction of capacity that occurred in the fourth quarter of 2019.
(3) In 2020, the interest on the line loss provision was reclassified from fuel, carbon compliance and purchased power to interest expense. 

Supplemental disclosure

Comparable EBITDA – excluding the PPA Termination Payments

Alberta Thermal cash flow – excluding the PPA Termination Payments

2020

162 

47 

2019

263 

158 

2018

232 

122 

2020 
Availability for the year was lower compared to 2019 due to the Sundance Unit 6 planned turnaround and conversion to 
gas outage occurring in late 2020 and higher unplanned outages and derates. The Sundance Unit 6 return to service was 
delayed  due  to  unexpected  issues  identified  during recommissioning.  Our  Keephills  Unit  2  has  experienced  increased 
outages  as  we  approach  the  2021  turnaround  outage.  Increased  derates  are  attributed  to  our  conversion  to  gas 
transition plan and our consumption of lower-quality coal inventory.  

Production  for  the  year  ended  Dec.  31,  2020,  decreased  2,822  GWh  compared  to  2019.  This  was  largely  a  result  of 
curtailments  and  dispatch  optimization  resulting  in  lower  merchant  production  in  the  Alberta  Thermal  fleet  due  to 
reduced  industrial  demand  in  the  province  and  the  impact  of  COVID-19  on  demand  generally.  Production  also 
decreased due to lower availability. 

Revenue for the year ended Dec. 31, 2020, decreased by $164 million compared to 2019, mainly due to lower merchant 
production.

TransAlta Corporation    |    2020  Annual Integrated Report

M23

TRANSALTA CORPORATION M23

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Revenues per MWh

Fuel, carbon compliance and purchased power per MWh

Management’s Discussion and Analysis

2020

$66

$39

2019

$64

$35

2018

$63

$37

In  2020,  revenue  per  MWh  of  production  increased  by  $2  per  MWh  in  2020  compared  with  2019  primarily  due  to 
higher  realized  prices  as  a  result  of  optimizing  production  during  periods  of  favourable  pricing  and  hedging  positions 
minimizing the impact of unfavourable market pricing.

In  2020,  fuel,  carbon  compliance  and  purchased  power  costs  per  MWh  of  production  increased  by  $4  per  MWh 
compared with 2019. Costs per MWh increased due to fixed coal costs spread over less volumes, resulting in increased 
costs per MWh. 

We continued to co-fire with natural gas, when economic. Natural gas combustion produces fewer GHG emissions than 
coal combustion, which lowers our GHG compliance costs.  

OM&A  costs  were  lower  in  2020  compared  to  2019  as  a  result  of  strong  cost  controls,  reduced  staffing  in  line  with 
conversion to gas transition plans, and a reflection of lower production.

Excluding  the  PPA  Termination  Payments,  comparable  EBITDA  for  the  year  ended  Dec.  31,  2020,  decreased 
$101 million compared to 2019. Merchant production was lower due to unfavourable market conditions and higher fuel 
costs. 

For the year ended Dec. 31, 2020, sustaining capital expenditures increased by $13 million compared to 2019 mainly 
due  to  the  major  maintenance  that  occurred  during  the  Sheerness  dual-fuel  conversion  and  the  Sundance  Unit  6 
turnaround.

Alberta Thermal cash flow for the year ended Dec. 31, 2020, excluding the PPA Termination Payments, decreased by 
$111 million compared to 2019 mainly due to lower comparable EBITDA, increased sustaining and productivity capital 
expenditures and the early settlement of mining equipment leases, partially offset by the deferral of decommissioning 
expenditures due to COVID-19.

2019
Availability for the year was lower compared to 2018 due to planned outages at our Keephills 1 and Sundance 4 units, 
whereas 2018 only had one outage at one of our non-operated units; this was partially offset by fewer unplanned losses 
in 2019.

Production for the year ended Dec. 31, 2019, decreased 1,381 GWh compared to 2018 primarily due to the mothballing 
of certain Sundance units and planned outages, partially offset by lower unplanned outages. Lower contract production 
was partially offset by higher merchant production.

Revenue for the year ended Dec. 31, 2019, decreased by $78 million compared to 2018, mainly due to lower production  
as a result of the termination of the Sundance B and C PPAs on March 31, 2018.

Revenue per MWh of production rose to approximately $64 per MWh in 2019 from $63 per MWh in 2018. Revenues in 
the first quarter of 2018 included the Sundance B and C PPA revenue as well as the pass-through revenues associated 
with  carbon  compliance  costs,  which  are  no  longer  recoverable  on  the  Sundance  units  as  the  PPAs  have  been 
terminated.

Fuel, carbon compliance and purchased power costs per MWh were lower in 2019 compared to 2018. Cost per MWh of 
production fell to approximately $35 per MWh in 2019 from $37 per MWh in 2018. 

We  continued  to  co-fire  with  natural  gas,  when  economical.  Natural  gas  combustion  produces  fewer  GHG  emissions 
than  coal  combustion,  which  lowers  our  GHG  compliance  costs.  In  addition,  fuel  costs  can  be  lower  by  co-firing, 
depending on the market price for natural gas. On Nov. 1, 2019, the firm contract to transport natural gas on the Pioneer 
Pipeline began, which substantially increased gas quantities available to us and increased our supply available to co-fire. 

M24

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M24

 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

OM&A costs were lower in 2019 compared to 2018 as a result of the full-year impact of cost reductions progressively 
implemented over the preceding year. These cost reductions arose from a combination of factors that included fewer 
units operating, lower capacity factor operation on merchant units, co-firing with gas, and operations and maintenance 
work optimization.

Excluding the PPA Termination Payments, comparable EBITDA for the year ended Dec. 31, 2019, increased $31 million 
compared  to  2018.  This  largely  reflects  lower  fuel,  carbon  compliance  and  purchased  power  costs,  as  well  as  lower 
OM&A costs.

For the year ended Dec. 31, 2019, sustaining capital expenditures decreased by $2 million compared to 2018, mainly 
due  to  less  mine  development  work  being  completed  in  2019,  partially  offset  by  higher  spend  on  planned  major 
maintenance. In 2018, there was only one planned major outage at one of our non-operating units, while during 2019 
there were two planned major outages at the Keephills 1 and Sundance 4 units.

Alberta Thermal's cash flow for the year ended Dec. 31, 2019, increased by $36 million (excluding the PPA Termination 
Payments)  compared  to  2018,  mainly  due  to  higher  comparable  EBITDA  and  decreased  sustaining  and  productivity 
capital expenditures. 

(1)

Year ended Dec. 31
Centralia
Availability (%)
Adjusted availability (%)(2)

Contract sales volume (GWh)

Merchant sales volume (GWh)

Purchased power (GWh)

Total production (GWh)

Gross installed capacity (MW)

Revenues

Fuel and purchased power
Comparable gross margin

Operations, maintenance and administration

Taxes, other than income taxes
Comparable EBITDA

Deduct:

Sustaining capital:

Routine capital

Planned major maintenance

Total sustaining capital expenditures

Productivity capital

Total sustaining and productivity capital

Principal payments on lease liabilities

Decommissioning and restoration costs settled

Centralia cash flow

(1) The US Coal segment was renamed Centralia in the third quarter of 2020.
(2) Adjusted for dispatch optimization.

2020

76.2 
90.2 

3,338 

5,571 
(3,775)   
5,134 

1,340 

483 

279 

204 

60 

5 

139 

3 

7 

10 

— 

10 

— 

7 

122 

2019

74.0 
83.5 

3,329 

7,691 

(3,865)   

7,155 

1,340 

559 

416 

143 

67 

3 

73 

2  

5  

7  

1  

8  

— 

11  

54  

2018

60.2 
84.6 

3,329 

5,704 

(3,665) 

5,368 

1,340 

471 

314 

157 

61 

5 

91 

2 

11 

13 

— 

13 

4 

11 

63 

2020 
Adjusted availability for the year increased compared to 2019 due to lower forced outages and derates in 2020. In the 
first half of 2019, Centralia Unit 1 had significant derates that were resolved and not experienced in 2020.

Production decreased by 2,021 GWh in 2020 compared to 2019 due mainly to lower merchant pricing throughout 2020 
and timing of dispatch optimization. In 2020, both Centralia units were taken out of service in February and March as a 
result of seasonally lower prices in the Pacific Northwest, whereas in 2019 both units remained in service into April due 
to higher prices in the Pacific Northwest. 

TransAlta Corporation    |    2020  Annual Integrated Report

M25

TRANSALTA CORPORATION M25

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

OM&A costs were $7 million lower in 2020 compared to 2019 mainly due to lower levels of maintenance required to 
support an almost 30 per cent decrease in production and strong cost controls.

Comparable  EBITDA  increased  by  $66  million  compared  to  2019,  primarily  due  to  increased  benefits  from  dispatch 
optimization in 2020 and from an isolated and extreme pricing event in March 2019 for $25 million where Centralia was 
unable to commit one of its units to physical production for day-ahead supply due to an unplanned forced outage repair. 
In  addition,  comparable  EBITDA  in  2020  increased  with  the  strengthening  of  the  US  dollar  relative  to  the  Canadian 
dollar throughout the year. 

Sustaining  and  productivity  capital  expenditures  for  2020  were  $2  million  higher  than  2019  mainly  due  to  increased  
planned outage work performed in 2020 during the reserve shutdown. 

Centralia's cash flow for 2020 increased by $68  million  compared to the prior year, mainly due to higher comparable 
EBITDA  and  deferral  of  decommissioning  expenditures  due  to  COVID-19,  partially  offset  by  higher  sustaining  capital 
spend.

2019
Adjusted availability for 2019 was down compared to 2018 due to higher forced outages and derates in 2019. Centralia 
Unit  1  operated  with  a  derate  due  to  blocked  precipitator  hoppers  impacting  the  first  half  of  2019.  This  derate  was 
resolved when the unit was offline during the second quarter of 2019.

Production was up 1,787 GWh in 2019 compared to 2018 due mainly to higher merchant pricing in the first half of 2019 
and timing of dispatch optimization. In 2019, both Centralia units remained in service into April due to higher prices in 
the  Pacific  Northwest,  whereas  in  2018,  both  Centralia  units  were  taken  out  of  service  in  February  as  a  result  of 
seasonally lower prices in the Pacific Northwest. In 2018, we performed major maintenance on both units during that 
time.

OM&A costs were $6 million higher in 2019 compared to 2018 mainly due to higher levels of maintenance required to 
support a 33 per cent increase in production and as a result of higher costs to resolve precipitator blockages.

Comparable  EBITDA  in  2019  decreased  by  $18  million  compared  to  2018,  primarily  due  to  an  isolated  and  extreme 
pricing event in March. Centralia was unable to commit one of its units to physical production for day-ahead supply due 
to an unplanned forced outage repair. 

Sustaining and productivity capital expenditures for 2019 were $5 million lower than 2018, mainly due to less planned 
outage work performed in 2019. 

Centralia's  cash  flow  for  2019  decreased  by  $9  million  compared  to  2018,  mainly  due  to  lower  comparable  EBITDA, 
partially offset by lower sustaining and productivity capital spend.

Year ended Dec. 31
Energy Marketing
Revenues and comparable gross margin

Operations, maintenance and administration

Comparable EBITDA

Deduct:

Provisions and other

Energy Marketing cash flow

2020

143 

30 

113 

(1)   

114 

2019

119 

30 

89 

(16)   

105 

2018

67 

24 

43 

10 

33 

2020 
Comparable  EBITDA  for  2020  increased  by  $24  million  compared  to  2019.  Results  were  primarily  from  continued 
strong  performance  in  both  power  and  natural  gas  markets.  Gains  were  realized  from  short-term  strategies  across 
various geographic regions aided by market and price volatility. The Energy Marketing team was able to capitalize on 
short-term arbitrage opportunities in the markets in which we trade without materially changing the risk profile of the 
business unit. OM&A spending for 2020 and 2019 was similar.

Energy  Marketing's  cash  flows  for  2020  increased  by  $9  million  compared  to  2019  mainly  due  to  higher  comparable 
EBITDA, partially offset by changes in emissions obligations and prepaid balances for transmission rights.

M26

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M26

 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis
Management’s Discussion and Analysis

2019 
Comparable EBITDA for 2019 increased by $46 million compared to 2018 results due to strong results from all Energy 
Marketing segments, with particularly strong performance from US Western and Eastern markets due to continued high 
levels of volatility. OM&A increased due to higher incentives related to stronger performance. The Energy Marketing 
team was able to capitalize on short-term arbitrage opportunities in the markets in which we trade without materially 
changing the risk profile of the business unit.

Energy Marketing's cash flows for 2019 increased by $72 million compared to 2018, mainly due to higher comparable 
EBITDA and changes in emissions obligations and prepaid balances for transmission rights.

Year ended Dec. 31
Corporate
Operations, maintenance, and administration

Taxes, other than income taxes

Net other operating loss

Comparable EBITDA

Deduct:

Sustaining capital:

Routine capital

Total sustaining capital expenditures

Productivity capital

Total sustaining and productivity capital expenditures

Provisions

Principal payments on lease liabilities

Corporate cash flow

Supplemental disclosure

Corporate cash flow

Total return swap (gains) losses
Adjusted Corporate cash flow

2020

2019

2018

80 

1 

— 

73 

1 

2 

(81)   

(76)   

14 

14 

1 

15 

— 

4 

12 

12 

— 

12 

— 

4 

86 

1 

— 

(87) 

16 

16 

4 

20 

— 

— 

(100)   

(92)   

(107) 

2020

(100)   
2 
(98)   

2019

(92)   

(13)   

(105)   

2018

(107) 

(1) 

(108) 

2020 
Our  Corporate  overhead  costs  in  2020  were  $81  million,  an  increase  of  $5  million  compared  to  $76  million  in  2019, 
primarily due to realized gains and losses from the total return swap. A portion of the settlement cost of our employee 
share-based payment plans is fixed by entering into total return swaps, which are cash settled every quarter. Excluding 
the impact of the total return swap, Corporate overhead costs for 2020 decreased by $10 million compared to 2019, 
mainly due to lower legal fees and lower labour and reduced travel costs, partially offset by additional costs to support 
growth  and  development  projects,  centralization  of  shared  services  to  the  Corporate  segment  and  additional  costs 
incurred to support COVID-19 protocols. 

Corporate cash flow, excluding the impact of the total return swap, was also lower in 2020 compared to 2019 due to 
slightly higher sustaining and productivity capital spend on information technology.

2019 
Our  Corporate  overhead  costs  in  2019  were  $76  million,  a  decrease  of  $11  million  compared  to  $87  million  in  2018, 
primarily due to cost-efficiency initiatives and principal payments on lease liabilities. In addition, we realized a net gain 
of  $13  million  from  the  total  return  swap,  which  was  mostly  offset  by  higher  legal  costs.  Corporate  cash  flow  also 
benefited  from  lower  sustaining  and  productivity  capital  spend  due  to  higher  spend  in  2018  on  automation  and  new 
information technology solutions implemented in prior years, which helped contribute to the cost efficiencies realized in 
2019. 

TransAlta Corporation    |    2020  Annual Integrated Report

M27

TRANSALTA CORPORATION M27

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

An additional IFRS measure is a line item, heading or subtotal that is relevant to an understanding of the consolidated 
financial  statements  but  is  not  a  minimum  line  item  mandated  under  IFRS,  or  the  presentation  of  a  financial  measure 
Additional IFRS Measures and Non-IFRS Measures
that  is  relevant  to  an  understanding  of  the  consolidated  financial  statements  but  is  not  presented  elsewhere  in  the 
consolidated financial statements. We have included line items entitled gross margin and operating income (loss) in our 
Consolidated  Statements  of  Earnings  (Loss)  for  the  years  ended Dec.  31,  2020,  2019  and  2018.  Presenting  these  line 
items  provides  management  and  investors  with  a  measurement  of  ongoing  operating  performance  that  is  readily 
comparable from period to period.

We  evaluate  our  performance  and  the  performance  of  our  business  segments  using  a  variety  of  measures  to  provide 
management  and  investors  with  an  understanding  of  our  financial  position  and  results.  Certain  financial  measures 
discussed in this MD&A are not defined under IFRS, are not standard measures under IFRS and, therefore, should not be 
considered  in  isolation  or  as  an  alternative  to,  or  to  be  more  meaningful  than,  net  earnings  attributable  to  common 
shareholders or cash flow from operating activities, as determined in accordance with IFRS when assessing our financial 
performance or liquidity. These measures may not be comparable to similar measures presented by other issuers and 
should  not  be  considered  in  isolation  or  as  a  substitute  for  measures  prepared  in  accordance  with  IFRS.  Comparable 
EBITDA,  deconsolidated  comparable  EBITDA,  deconsolidated  comparable  EBITDA  by  segment,  FFO,  deconsolidated 
FFO, FCF, total net debt, total consolidated net debt, adjusted net debt, deconsolidated net debt and segmented cash 
flow generated by the business, all as defined below, are non-IFRS measures that are presented in this MD&A. See the 
Discussion  of  Consolidated  Financial  Results,  Segmented  Comparable  Results,  Selected  Quarterly  Information,  Key 
Financial  Ratios  and  Financial  Capital  sections  of  this  MD&A  for  additional  information,  including  a  reconciliation  of 
such non-IFRS measures to the most comparable IFRS measure.

M28

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M28

 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

Each business segment assumes responsibility for its operating results measured to comparable EBITDA and cash flows 
generated  by  the  business.  Gross  margin  is  also  a  useful  measure  as  it  provides  management  and  investors  with  a 
Discussion of Consolidated Financial Results
measurement of operating performance that is readily comparable from period to period. 

EBITDA  is  a  widely  adopted  valuation  metric  and  an  important  metric  for  management  that  represents  our  core 
business  profitability.  Interest,  taxes,  depreciation  and  amortization  are  not  included,  as  differences  in  accounting 
Comparable EBITDA
treatments  may  distort  our  core  business  results.  In  addition,  under  comparable  EBITDA  we  reclassify  certain 
transactions to facilitate the discussion of the performance of our business: 

▪
▪

▪

Comparable EBITDA is adjusted to exclude the impact of unrealized mark-to-market gains or losses. 
Any gains or losses on asset sales or foreign exchange gains or losses are not included as these are not part of 
operating income.
Certain  assets  we  own  in  Canada  and  in  Australia  are  fully  contracted  and  recorded  as  finance  leases  under 
IFRS. We believe it is more appropriate to reflect the payments we receive under the contracts as a capacity 
payment in our revenues instead of as finance lease income and a decrease in finance lease receivables. 

▪ We  also  reclassify  the  depreciation  on  our  mining  equipment  from  fuel,  carbon  compliance  and  purchased 

▪

▪

▪

▪

▪

▪

▪

power to reflect the actual cash cost of our business in our comparable EBITDA. 
Coal inventory writedowns are not included as these are non-cash adjustments that are not reflective of our 
core business results upon conversion to gas. To accelerate our conversion to gas plans, a decision was made to 
accelerate the mine shutdown to 2021. 
In December 2016, we agreed to terminate our existing arrangement with the Independent Electricity System 
Operator  relating  to  our  Mississauga  cogeneration  facility  in  Ontario  and  entered  into  the  NUG  Contract 
effective Jan. 1, 2017. Under the new NUG Contract, we received fixed monthly payments until Dec. 31, 2018, 
with no delivery obligations. Under IFRS, for our reported results in 2016, as a result of the NUG Contract, we 
recognized a receivable of $207 million (discounted), a pre-tax gain of approximately $191 million net of costs 
to mothball the units and accelerated depreciation of $46 million. In 2017 and 2018, on a comparable basis, we 
recorded the payments we received as revenues as a proxy for operating income and depreciated the facility 
until Dec. 31, 2018.
On  the  commissioning  of  the  South  Hedland  facility  in  July  2017,  we  prepaid  approximately  $74  million  of 
electricity transmission and distribution costs. Interest income is recorded on the prepaid funds. We reclassify 
this interest income as a reduction in the transmission and distribution costs expensed each period to reflect 
the net cost to the business. 
In October 2019, we acquired Capital Power's 50 per cent ownership of Keephills 3 in exchange for selling our 
50  per  cent  ownership  in  the  Genesee  3  facility  to  Capital  Power,  and  we  now  own  100  per  cent  of  the 
Keephills  3  facility.  As  a  result,  all  of  the  Keephills  3  and  Genesee  3  project  agreements  with  Capital  Power 
were terminated, including the agreement governing the supply of coal from TransAlta’s Highvale mine to the 
Keephills 3 facility. Upon termination of this agreement in the fourth quarter of 2019, the Highvale mine had 
no  future  performance  obligations  and,  accordingly,  the  balance  of  the  contract  liability  of  $88  million  was 
recognized in earnings. On a comparable basis, we removed this gain from 2019 results.  
Asset  impairment  charges  (reversals)  are  removed  to  calculate  comparable  EBITDA  as  these  are  accounting 
adjustments that impact depreciation and amortization and do not reflect business performance.
During the fourth quarter of 2020, we acquired a 49 per cent interest in the Skookumchuck wind facility, which 
is treated as an equity investment under IFRS and our proportionate share of the net earnings is reflected as 
equity  income  on  the  statement  of  earnings  under  IFRS.  As  this  investment  is  part  of  our  regular  power-
generating operations, we have included our proportionate share of the comparable EBITDA of Skookumchuck 
in our total comparable EBITDA. In addition, in the Wind and Solar comparable results, we have included our 
proportionate  share  of  revenues  and  expenses  to  reflect  the  full  operational  results  of  this  investment.  We 
have  not  included  EMG's  comparable  EBITDA  in  our  total  comparable  EBITDA  as  it  does  not  represent  our 
regular power-generating operations. 
During the fourth quarter of 2020, we recorded an onerous contract provision on the coal supply contract for 
Sheerness as we accelerated our plans to eliminate coal as a fuel source by the end of 2021. This is a one-time 
charge that is not reflective of ongoing operations and therefore has been removed for comparable EBITDA.

TransAlta Corporation    |    2020  Annual Integrated Report

M29

TRANSALTA CORPORATION M29

Management’s Discussion and Analysis

Management’s Discussion and Analysis

A  reconciliation  of  net  earnings  (loss)  attributable  to  common  shareholders  to  comparable  EBITDA  results  is  set  out 
below: 

Year ended Dec. 31

Net earnings (loss) attributable to common shareholders

Net earnings attributable to non-controlling interests

Preferred share dividends

Net earnings (loss)

Adjustments to reconcile net income to comparable EBITDA

Income tax expense (recovery)

Gain on sale of assets and other

Foreign exchange (gain) loss

Net interest expense

Equity income

Depreciation and amortization

Comparable reclassifications

Decrease in finance lease receivables

Mine depreciation included in fuel cost

Australian interest income

Unrealized mark-to-market (gains) losses

Adjustments to earnings to arrive at comparable EBITDA

Impact of Sheerness going off coal(1)
Impacts associated with Mississauga recontracting(2)
Gain on termination of Keephills 3 coal rights contract

Coal inventory writedown
Asset impairment (3)
Share of adjusted EBITDA from joint venture(4)

Comparable EBITDA

Comparable EBITDA – excluding the PPA Termination Payments

2020

(336)   

34 

49 

(253)   

(50)   

(9)   

(17)   

238 

(1)   

654 

17 

145 

4 

46 

29 

— 

— 

37 

84 

3 

927 

927 

2019

52 

94 

30 

176 

17 

(46)   

15 

179 

— 

590 

24 

121 

4 

(33)   

— 

— 

(88)   

— 

25 

— 

984 

928 

2018

(248) 

108 

50 

(90) 

(6) 

(1) 

15 

250 

— 

574 

59 

140 

4 

38 

— 

105 

— 

— 

73 

— 

1,161 

1,004 

(1) During the fourth quarter of 2020, a decision was made to accelerate our plans to eliminate coal as a fuel source at the Sheerness facility by the end of 2021. As 
such, the existing coal supply contract has been classified as an onerous contract and the remaining expected contract payments have been accrued for in the current 
year.
(2) Impacts associated with Mississauga facility recontracting for the year ended Dec. 31, 2018, are as follows: revenue ($108 million) and fuel and purchased power 
and de-designated hedges ($3 million). 
(3) Asset impairment for 2020 primarily includes the retirement of Sundance Unit 3 ($70 million), impairment on a BC hydro facility ($2 million), impairment on the 
Centralia land ($9 million) and asset impairments resulting from changes in discount rates for the decommissioning and restoration liabilities for our retired assets 
(2019 — $141 million increase for the decommissioning and restoration liability at the Centralia mine, $15 million for trucks held for sale and written down to net 
realizable value and the $18 million write-off of project development costs, partially offset by a $151 million impairment reversal at Centralia; 2018 — $38 million 
charge  related  to  the  retirement  of  Sundance  Unit  2,  Lakeswind  and  Kent  Breeze  impairment  of  $12  million  and  a  write-off  of  project  development  costs  of  $23 
million). For further details, please refer to the Critical Accounting Estimates section of this MD&A. 
(4) Includes our share of amounts for Skookumchuck, an equity accounted joint venture.

Funds from Operations ("FFO") is an important metric as it provides a proxy for cash generated from operating activities 
before changes in working capital and provides the ability to evaluate cash flow trends in comparison with results from 
Funds from Operations and Free Cash Flow
prior  periods.  FCF  is  an  important  metric  as  it  represents  the  amount  of  cash  that  is  available  to  invest  in  growth 
initiatives,  make  scheduled  principal  repayments  on  debt,  repay  maturing  debt,  pay  common  share  dividends  or 
repurchase common shares. Changes in working capital are excluded so FFO and FCF are not distorted by changes that 
we consider temporary in nature, reflecting, among other things, the impact of seasonal factors and timing of receipts 
and payments. FFO per share and FCF per share are calculated using the weighted average number of common shares 
outstanding during the period. 

M30

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M30

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The table below reconciles our cash flow from operating activities to our FFO and FCF:. (

Management’s Discussion and Analysis

Management’s Discussion and Analysis

Year ended Dec. 31
Cash flow from operating activities(1)(2)
Change in non-cash operating working capital balances
Cash flow from operations before changes in working capital

Adjustments

Share of adjusted FFO from joint venture(2)
Decrease in finance lease receivable

Coal inventory writedown

Other

FFO

Deduct:

Sustaining capital(2)
Productivity capital

Dividends paid on preferred shares

Distributions paid to subsidiaries’ non-controlling interests
Principal payments on lease liabilities(2)
Other

FCF

Weighted average number of common shares outstanding in the year
FFO per share

FCF per share

2020

702 
(89)   
613 

3 

17 

37 

15 

685 

(157)   
(4)   
(39)   
(102)   
(25)   
— 

358 

275 

2.49 

1.30 

2019

849 

(121)   

728 

— 

24 

— 

5 
757 

(141)   

(9)   

(40)   

(111)   

(21)   

— 

435 

283 

2.67 

1.54 

(1) 2019 and 2018 amounts include the PPA Termination Payments. See the Significant and Subsequent Events section for further details. 
(2) Includes our share of amounts for Skookumchuck, an equity accounted joint venture.

The table below bridges our comparable EBITDA to our FFO and FCF:

Year ended Dec. 31
Comparable EBITDA(1)
Provisions and other
Interest expense(2)
Current income tax expense(2)
Realized foreign exchange gain (loss)
Decommissioning and restoration costs settled(2)
Other cash and non-cash items
FFO

Deduct:

Sustaining capital(2)
Productivity capital

Dividends paid on preferred shares

Distributions paid to subsidiaries’ non-controlling interests
Principal payments on lease liabilities(2)

Other

FCF

2020

927 

7 
(192)   
(35)   
8 
(18)   
(12)   
685 

(157)   
(4)   
(39)   
(102)   
(25)   
— 

358 

2019

984 

13 
(174)   
(35)   
(6)   
(34)   
9 

757 

(141)   
(9)   
(40)   
(111)   
(21)   
— 

435 

(1) 2019 and 2018 amounts include the PPA Termination Payments. See the Significant and Subsequent Events section for further details. 
(2) Includes our share of amounts for Skookumchuck, an equity accounted joint venture.

2018

820 

44 

864 

— 

59 

— 

4 
927 

(150) 

(21) 

(40) 

(169) 

(18) 

(5) 

524 

287 

3.23 

1.83 

2018

1,161 

(9) 

(187) 

(28) 

5 

(31) 

16 

927 

(150) 

(21) 

(40) 

(169) 

(18) 

(5) 

524 

TransAlta Corporation    |    2020  Annual Integrated Report

M31

TRANSALTA CORPORATION M31

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Supplemental disclosure

FFO – excluding the PPA Termination Payments

FCF – excluding the PPA Termination Payments

FFO per share – excluding the PPA Termination Payments

FCF per share – excluding the PPA Termination Payments

Management’s Discussion and Analysis

2020

685 

358 

2.49 

1.30 

2019

701 

379 

2.48 

1.34 

2018

770 

367 

2.68 

1.28 

For explanations for the current period, please refer to the Highlights section of this MD&A.

FCF in 2019, after adjusting for the PPA Termination Payments, increased $12 million compared to 2018, primarily as a 
result  of  lower  sustaining  and  productivity  capital  expenditures  and  lower  distributions  paid  to  subsidiaries'  non-
controlling interests. Significant changes in segmented cash flows are highlighted in the Segmented Comparable Results 
section of this MD&A.  

The table below bridges our reported EBITDA of our owned assets to our comparable EBITDA:

Year ended Dec. 31, 2020

Revenues

Fuel, carbon compliance and purchased power

Gross margin

Operations, maintenance and administration

Asset impairment

Taxes, other than income taxes

Net other operating income (expense)
Comparable EBITDA

2,101 

Reported Adjustments(1)
70 
(186)   
256 

1,133 

968 

472 

84 

33 

(11)   

555 

— 
(84)   
— 
(29)   
369 

Joint venture 
investment(2)
3 

— 
3 

— 

— 

— 

— 
3 

Comparable 
total

2,174 

782 

1,392 

472 

— 

33 

(40) 

927 

(1) Refer to the reconciliation of net earnings (loss) attributable to common shareholders to comparable EBITDA table above for details of all adjustments.
(2) Includes our share of amounts for Skookumchuck, an equity accounted joint venture. 

M32

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M32

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

Fourth Quarter
Three months ended Dec. 31
Consolidated Financial Highlights
Adjusted availability (%)(1)
Production (GWh)(1)
Revenues
Fuel, carbon compliance and purchased power(3)
Operations, maintenance and administration

Net earnings (loss) attributable to common shareholders

Cash flow from operating activities
Comparable EBITDA(2),(3)
FFO(2)
FCF(2)

Net earnings (loss) per share attributable to common shareholders, basic and diluted
FFO per share(2)
FCF per share(2)
Dividends declared per common share(4)
Dividends declared per preferred share(5)

2020

 87.1 

7,704 

544 

327 

118 

(167)   

110 

234 

161 

52 

(0.61)   

0.59 

0.19 

0.09 

0.50 

2019

 91.6 

8,153 

609 

286 

127 

66 

181 

243 

189 

121 

0.24 

0.67 

0.43 

0.04 

0.26 

(1) Adjusted availability and production include all generating assets that we operate and finance leases and exclude hydro assets and equity investments. 
(2) These items are not defined and have no standardized meaning under IFRS. Presenting these items from period to period provides management and investors with 
the ability to evaluate earnings trends more readily in comparison with prior periods’ results. Please refer to the Discussion of Consolidated Financial Results section of 
this MD&A for further discussion of these items, including, where applicable, reconciliations to measures calculated in accordance with IFRS. See also the Additional 
IFRS Measures and Non-IFRS Measures section of this MD&A.
(3) During the fourth quarter of 2020, we reclassified interest expense on the AESO transmission line loss from fuel costs to interest expense. 
(4) Dividends declared vary year over year due to timing of dividend declarations.
(5) Weighted average of the Series A, B, C, E and G preferred share dividends declared. Dividends declared vary year over year due to timing of dividend declarations.

During the fourth quarter of 2020, the Corporation demonstrated strong performance at the Wind and Solar and North 
American Gas segments with the addition of new facilities,and higher wind resources, which was more than offset by the 
Financial Highlights
expected impact on EBITDA of the Sundance Unit 6 turnaround and conversion to gas outage at Alberta Thermal and 
high levels of volatility in the market impacting the Energy Marketing segment.

FCF in the fourth quarter of 2020 was $52 million compared to $121 million in the same period of 2019, mainly due to 
lower comparable EBITDA, higher interest expense, higher sustaining capital expenditures, increased distributions paid 
to  subsidiary  non-controlling  interests  and  final  settlement  of  lease  payments  at  the  Highvale  mine.  FFO  was  $161 
million, which was $28 million lower than the fourth quarter of 2019, also mainly due to lower comparable EBITDA and 
higher interest expense relating to new debt issuances.

Net loss attributable to common shareholders in the fourth quarter of 2020 was $167 million compared to net earnings 
of  $66  million  in  the  same  period  of  2019,  a  decrease  of  $233  million.  The  net  loss  in  2020  was  impacted  by  lower 
availability, which reduced revenues, the additional coal inventory writedowns of $15 million from an increased cost of 
coal  and  higher  depreciation  from  the  acceleration  of  the  Highvale  mine  closure  of  $8  million,  the  onerous  contract 
provision recognized on the coal contract for Sheerness for $29 million and higher interest expense associated with the 
TEC  Offering  and  the  second  tranche  of  the  Brookfield  Investment,  partially  offset  by  lower  asset  impairments.  The 
prior year also benefited from the gain on the termination of the Keephills 3 coal rights contract of $88 million and the 
gain on the sale of Genesee 3 of $77 million.

TransAlta Corporation    |    2020  Annual Integrated Report

M33

TRANSALTA CORPORATION M33

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

Segmented  cash  flow  generated  by  the  business  measures  the  net  cash  generated  by  each  of  our  segments  after 
sustaining and productivity capital expenditures, reclamation costs and provisions. It also excludes non-cash mark-to-
Segmented Cash Flow Generated by the Business and Operational Performance
market  gains  or  losses.  This  is  the  cash  flow  available  to  pay  our  interest,  and  cash  taxes,  distributions  to  our  non-
controlling partners, dividends to our preferred shareholders, grow the business, pay down debt and return capital to 
our shareholders. 

Segmented cash flow and operational performance for the business for the three months ended Dec. 31, 2020 and 2019 
is as follows:

Three months ended Dec. 31
Segmented cash flow(1)

Hydro

Wind and Solar
North American Gas(2)
Australian Gas
Alberta Thermal(3)
Centralia(3)

Generation segmented cash flow

Energy Marketing
Corporate(4)

Total segmented cash flow

2020

2019

11 

80 

28 

24 

(10)   

28 

161 

15 

(28)   

148 

13 

72 

22 

25 

37 

25 

194 

31 

(29) 

196 

(1) This is not defined and has no standardized meaning under IFRS. Presenting this item from period to period provides management and investors with the ability to 
evaluate earnings trends more readily in comparison with prior periods’ results. Please refer to the Discussion of Consolidated Financial Results section of this MD&A 
for  further  discussion  of  these  items,  including,  where  applicable,  reconciliations  to  measures  calculated  in  accordance  with  IFRS.  See  also  the  Additional  IFRS 
Measures and Non-IFRS Measures section of this MD&A.
(2) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020 
(3) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.
(4) Includes gains and losses on the total return swap.

Availability for the three months ended Dec. 31, 2020, was lower than with the same period in 2019, mainly due to the 
Sundance Unit 6 planned turnaround and conversion to gas outage at Alberta Thermal in late 2020, which was partially 
offset  by  higher  availability  at  Centralia  due  to  lower  unplanned  outages  and  derates.  Production  was  lower  for  the 
three  months  ended  Dec.  31,  2020,  compared  to  the  same  period  in  2019,  primarily  due  to  lower  availability  and 
economic dispatch at Alberta Thermal, partially offset by higher wind resources at Wind and Solar. 

Segmented cash flow generated by the business totalled $148 million in the fourth quarter, a decrease of $48 million 
compared  with  last  year’s  performance.  The  decrease  in  cash  flow  is  largely  due  to  lower  availability  resulting  from 
planned outages and additional sustaining capital spend resulting from the Sundance Unit 6 turnaround and conversion 
to  gas  outages  at  Alberta  Thermal  and  lower  cash  flows  from  Energy  Marketing  due  to  market  volatility.  This  was 
partially offset by increased segmented cash flows at North American Gas with the addition of the Ada facility, lower 
capital  expenditures  and  higher  margins  at  our  Sarnia  facility.  In  addition,  segmented  cash  flows  at  Wind  and  Solar 
increased  as  a  result  of  the  addition  of  the  Skookumchuck  wind  facility  and  full  year  of  operations  for  Big  Level  and 
Antrim. 

M34

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M34

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

A  reconciliation  of  net  earnings  (loss)  attributable  to  common  shareholders  to  comparable  EBITDA  results  is  set  out 
Discussion of Consolidated Financial Results for the Fourth Quarter
below:
Comparable EBITDA

Three months ended Dec. 31

Net earnings (loss) attributable to common shareholders

Net earnings attributable to non-controlling interests

Preferred share dividends

Net earnings (loss)

Adjustments to reconcile net income to comparable EBITDA

Income tax expense

Gain on sale of assets and other

Foreign exchange (gain) loss

Net interest expense

Equity income

Depreciation and amortization

Comparable reclassifications

Decrease in finance lease receivables

Mine depreciation included in fuel cost

Australian interest income

Unrealized mark-to-market (gains) losses

Adjustments to earnings to arrive at comparable EBITDA

Inventory writedown
Impact of Sheerness going off-coal(1)
Asset impairment charge(2)
Gain on termination of Keephills 3 coal rights contract
Share of adjusted EBITDA from joint venture(3)

Comparable EBITDA

2020
(167)   
5 

19 
(143)   

(25)   
(7)   
(2)   
63 
(1)   

173 

6 

58 

1 

47 

15 

29 
17 

— 

3 
234 

2019

66 

27 

10 

103 

40 

(64) 

(3) 

18 

— 

154 

5 

31 

1 

(1) 

— 

— 
47 

(88) 

— 

243 

(1) During the fourth quarter of 2020, a decision was made to accelerate our plans to eliminate coal as a fuel source at the Sheerness facility by the end of 2021. As 
such, the existing coal supply contract has been classified as an onerous contract and the remaining expected contract payments have been accrued for in the current 
year.
(2) Asset impairment charges for the three months ended Dec. 31, 2020, primarily relates to the impairment on the Centralia land ($9 million) relating to Centralia 
land and asset impairments resulting from changes in discount rates for the decommissioning and restoration liabilities for our retired assets (2019 — $32 million 
increase for the decommissioning and restoration liability at the Centralia mine and $15 million for trucks held for sale and written down to net realizable value). 
(3) Includes our share of amounts for Skookumchuck, an equity accounted joint venture.

A summary of our comparable EBITDA by segment for the three months ended Dec. 31, 2020 and 2019 is as follows:

Three months ended Dec. 31

Comparable EBITDA

Hydro

Wind and Solar
North American Gas(1)
Australian Gas
Alberta Thermal(2)
Centralia(2)
Energy Marketing

Corporate

Total Comparable EBITDA

2020

2019

22 

77 

32 

31 

41 

30 

23 

(22)   

234 

18 

80 

29 

28 

55 

29 

26 

(22) 

243 

(1) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
(2) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.

TransAlta Corporation    |    2020  Annual Integrated Report

M35

TRANSALTA CORPORATION M35

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

Comparable EBITDA decreased by $9 million for the fourth quarter 2020, compared to 2019, primarily as a result of:

▪

Hydro  results  were  $4  million  higher  due  to  increased  revenues  from  higher  water  resources  and  lower  fuel 
and purchased power costs primarily resulting from allocated AESO transmission line loss recoveries. 

▪

▪
▪

▪ Wind and Solar results were down $3 million mainly due to provisions for the AESO transmission line loss and 
insurance  proceeds  benefiting  2019,  partially  offset  by  higher  production  volumes  and  additional  earnings 
from Skookumchuck.
Our  North  American  Gas  business  was  up  $3  million  mainly  due  to  the  addition  of  the  new  Ada  facility  and 
higher margins at our Sarnia facility.
Australian Gas was up $3 million, mainly due to lower legal costs.
Our Alberta Thermal results were down $14 million mainly due to lower production and increased fuel costs 
incurred from the acceleration of the Highvale mine closing and higher costs of coal. 
Centralia  results  were  consistent  with  the  prior  year's  fourth  quarter  results  as  lower  revenues  were  offset 
with decreases in fuel and purchased power costs and lower OM&A due to dispatch optimization.
Energy Marketing’s comparable EBITDA was down $3 million, mainly due to continued high levels of volatility 
in the market. 
Corporate  costs  were  consistent  with  the  prior  year's  fourth  quarter  results.  Impacts  from  the  total  return 
swap on our share-based payment plans were similar in 2020 compared to 2019. 

▪

▪

▪

FFO  per  share  and  FCF  per  share  are  calculated  as  follows  using  the  weighted  average  number  of  common  shares 
outstanding  during  the  period.  FFO,  FFO  per  share,  FCF  and  FCF  per  share  are  non-IFRS  measures,  are  not  defined 
Funds from Operations and Free Cash Flow
under IFRS, and therefore should not be considered in isolation or as an alternative to or to be more meaningful than 
cash flow from operating activities as determined in accordance with IFRS, when assessing our financial performance or 
liquidity. See the Additional IFRS Measures and Non-IFRS Measures section in this MD&A for further details. 

The table below reconciles our cash flow from operating activities to our FFO and FCF for the three months ended Dec. 
31, 2020 and 2019: 

Three months ended Dec. 31

Cash flow from operating activities

Change in non-cash operating working capital balances

Cash flow from operations before changes in working capital

Adjustments

Share of adjusted FFO from joint venture(1)
Decrease in finance lease receivable

Coal inventory writedown

Other

FFO

Deduct:

Sustaining capital(1)
Productivity capital

Dividends paid on preferred shares

Distributions paid to subsidiaries’ non-controlling interests
Principal payments on lease liabilities(1)
Other

FCF

Weighted average number of common shares outstanding in the period

FFO per share

FCF per share

(1) Includes our share of amounts for Skookumchuck, an equity accounted joint venture.

2020

110 

25 

135 

3 

6 

15 

2 

161 

(58)   

(3)   

(9)   

(29)   

(10)   

— 

52 

273 

0.59 

0.19 

2019

181 

1 

182 

— 

5 

— 

2 

189 

(30) 

(2) 

(10) 

(22) 

(5) 

1 

121 

280 

0.67 

0.43 

M36

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M36

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The table below provides a reconciliation of our comparable EBITDA to our FFO and FCF for the three months ended 
Dec. 31, 2020 and 2019:

Management’s Discussion and Analysis

Management’s Discussion and Analysis

Three months ended Dec. 31

Comparable EBITDA

Provisions
Interest expense(1)
Current income tax expense(1)
Realized foreign exchange gain (loss)
Decommissioning and restoration costs settled(1)
Other non-cash items

FFO

Deduct:

Sustaining capital(1)
Productivity capital

Dividends paid on preferred shares

Distributions paid to subsidiaries’ non-controlling interests
Principal payments on lease liabilities(1)
Other

Comparable FCF

Weighted average number of common shares outstanding in the period

Comparable FFO per share

Comparable FCF per share

(1) Includes our share of  amounts for Skookumchuck, an equity accounted joint venture.

The table below bridges our reported EBITDA of our owned assets to our comparable EBITDA:

2020

234 

(10)   

(56)   

5 

(1)   

(5)   

(6)   

161 

(58)   

(3)   

(9)   

(29)   

(10)   

— 

52 

273 

0.59 

0.19 

2019

243 

(1) 

(41) 

(7) 

1 

(10) 

4 

189 

(30) 

(2) 

(10) 

(22) 

(5) 

1 

121 

280 

0.67 

0.43 

Year ended Dec. 31, 2020

Revenues

Fuel, carbon compliance and purchased power

Gross Margin

Operations, maintenance and administration

Asset impairment

Taxes, other than income taxes

Net other operating income (expense)
Comparable EBITDA

544 

Reported Adjustments(1)
56 
(74)   
130 

217 

327 

118 

17 

8 

19 

55 

— 
(17)   
— 
(29)   
176 

Joint venture 
investment(2)
3 

— 
3 

— 

— 

— 

— 
3 

Comparable 
total

603 

253 

350 

118 

— 

8 

(10) 

234 

(1) Please refer to the reconciliation of net earnings (loss) attributable to common shareholders to comparable EBITDA table above for details of all adjustments.
(2) Includes our share of amounts for Skookumchuck, an equity accounted joint venture. 

TransAlta Corporation    |    2020  Annual Integrated Report

M37

TRANSALTA CORPORATION M37

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

Our results are seasonal due to the nature of the electricity market and related fuel costs. Higher maintenance costs are 
often  incurred  in  the  spring  and  fall  when  electricity  prices  are  expected  to  be  lower,  as  electricity  prices  generally 
Selected Quarterly Information
increase  in  the  peak  winter  and  summer  months  in  our  main  markets  due  to  increased  heating  and  cooling  loads. 
Margins are also typically impacted in the second quarter due to the volume of hydro production resulting from spring 
runoff  and  rainfall  in  the  Pacific  Northwest,  which  impacts  production  at  Centralia.  Typically,  hydroelectric  facilities 
generate most of their electricity and revenues during the spring months when melting snow starts feeding watersheds 
and rivers. Inversely, wind speeds are historically greater during the cold winter months and lower in the warm summer 
months.

Revenues

Comparable EBITDA

FFO

Net earnings (loss) attributable to common shareholders
Net earnings (loss) per share attributable to common shareholders,
   basic and diluted(1)

Revenues

Comparable EBITDA

FFO

Net earnings (loss) attributable to common shareholders
Net earnings (loss) per share attributable to common shareholders,
   basic and diluted(1)

Q1 2020

Q2 2020

Q3 2020

Q4 2020

606 

220 

172 

27 

437 

217 

159 

514 

256 

193 

544 

234 

161 

(60)   

(136)   

(167) 

0.10 

(0.22)   

(0.50)   

(0.61) 

Q1 2019

Q2 2019

Q3 2019

Q4 2019

648 

221 

169 

(65)   

(0.23)   

497 

215 

155 

— 

— 

593 

305 

244 

51 

609 

243 

189 

66 

0.18 

0.24 

(1)  Basic  and  diluted  earnings  per  share  attributable  to  common  shareholders  and  comparable  earnings  per  share  are  calculated  each  period  using  the  weighted 
average common shares outstanding during the period. As a result, the sum of the earnings per share for the four quarters making up the calendar year may sometimes 
differ from the annual earnings per share.

Reported net earnings, comparable EBITDA and FFO are generally higher in the first and fourth quarters due to higher 
demand associated with the cold winter months in the markets in which we operate and lower planned outages.

Net earnings (loss) attributable to common shareholders has also been impacted by the following variations and events:

▪
▪

▪
▪

▪

▪
▪

▪

▪
▪
▪
▪

Revenues declined due to weaker market conditions in 2020 as a result of COVID-19 and low oil prices;
Impact of Sheerness going off-coal, which has resulted in the remaining coal supply payments on the existing 
coal supply agreement being recognized as an onerous contract in the fourth quarter of 2020;
Coal inventory writedowns in the third and fourth quarters of 2020;
Impact of the updated provision estimates for the AESO transmission line loss during the last three quarters of 
2020; 
Significant foreign exchange gains in the last three quarters of 2020 more than offset foreign exchange losses 
experienced during the first quarter of 2020, while 2019 experienced overall foreign exchange losses for the 
year;
Gains relating to the Keephills 3 and Genesee 3 swap in the fourth quarter of 2019;
Effects of impairments and reversals during the second, third and fourth quarters of 2020 and the third and 
fourth quarters of 2019; 
Effects of changes in decommissioning and restoration provision in the third quarter of 2020 and third quarter 
of 2019;
Effects of changes in useful lives of certain assets during the third quarter of 2020 and third quarter of 2019;
Change in income tax rates in Alberta in the second quarter of 2019; 
Lower scheduled payments commencing in January 2019 from the Poplar Creek finance lease; and
Recognition of $56 million received on winning the arbitration against the Balancing Pool in the third quarter 
of 2019.

M38

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M38

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

The  methodologies  and  ratios  used  by  rating  agencies  to  assess  our  credit  rating  are  not  publicly  disclosed.  We  have 
developed our own definitions of ratios and targets to help evaluate the strength of our financial position. These metrics 
Key Financial Ratios
and ratios are not defined and have no standardized meaning under IFRS and may not be comparable to those used by 
other entities or by rating agencies. We maintained a strong and flexible financial position in 2020.

For the year ended Dec. 31
Funds from Operations before Interest to Adjusted Interest Coverage
FFO(1)
Less: PPA Termination Payments

Add: Interest on debt, exchangeable debentures and leases, net of interest income and
   capitalized interest(2)

FFO before interest
Interest on debt, exchangeable securities and leases, net of interest income(2)(3)
Add: 50 per cent of dividends paid on preferred shares(3)
Adjusted interest

FFO before interest to adjusted interest coverage (times)

2020

685 

— 

182 

867 

185 

22 

207 

4.2 

2019

757 

(56)   

166 

867 

172 

20 

192 

4.5 

2018

927 

(157) 

174 

944 

176 

20 

196 

4.8 

(1) See the Discussion of Consolidated Financial Results section in this MD&A for reconciliation of cash flow from operating activities to FFO. See also the IFRS 
Measures and Non-IFRS Measures section for further details.
(2) The interest on tax equity financing for Skookumchuck, an equity accounted joint venture, is not represented in the amounts.
(3) Exchangeable preferred shares are considered equity with dividend payments for credit purposes. For accounting purposes, they are accounted for as debt with 
interest expense in the Consolidated Financial Statements. 

Our target for FFO before interest to adjusted interest coverage is four to five times. While all periods are within our 
target range, the ratio decreased in 2020 compared to 2019, mainly due to lower FFO before interest. 

As at Dec. 31
Adjusted FFO to Adjusted Net Debt
FFO(1)(2)
Less: PPA Termination Payments(1)
Add: 100 per cent of interest paid on exchangeable preferred shares (3)
Less: 50 per cent of dividends paid on preferred shares(1)(3)
Adjusted FFO(1)
Period-end long-term debt(4)
Exchangeable securities
Less: 100 per cent of exchangeable preferred shares(3)
Less: Cash and cash equivalents

Less: Principal portion of TransAlta OCP restricted cash
Add: 50 per cent of issued preferred shares and exchangeable preferred shares(3)
Fair value asset of hedging instruments on debt(5)
Adjusted net debt(6)
Adjusted FFO to adjusted net debt (%)

2020

685 

— 

5 

(22)   

668 

3,361 

730 

(400)   

(703)   

(11)   

671 

(2)   

3,646 

18.3 

2019

757 

(56)   

— 

(20)   

681 

3,212 

326 

— 

(411)   

(10)   

471 

(7)   

3,581 

19.0  

2018

927 

(157) 

— 

(20) 

750 

3,267 

— 

— 

(89) 

(27) 

471 

(10) 

3,612 

20.8 

(1) Last 12 months.
(2) Refer to the Discussion of Consolidated Financial Results section of this MD&A for the reconciliation of cash flow from operating activities to FFO. See also the 
IFRS Measures and Non-IFRS Measures section for further details.
(3) Exchangeable preferred shares are considered equity with dividend payments for credit purposes. For accounting purposes, they are accounted for as debt with 
interest expense in the Consolidated Financial Statements. 
(4) Includes lease liabilities and tax equity financing.
(5) Included in risk management assets and/or liabilities on the consolidated financial statements as at Dec. 31, 2020, Dec. 31, 2019, and Dec. 31, 2018.
(6) The tax equity financing for Skookumchuck, an equity accounted joint venture, is not represented in the amounts.

Our target range for adjusted FFO to adjusted net debt is 20 to 25 per cent. Our adjusted FFO to adjusted net debt 
declined due to lower adjusted FFO compared with 2019, partially due to higher adjusted net debt. We reached the low 
end of our target range of 20 to 25 per cent in 2018.

TransAlta Corporation    |    2020  Annual Integrated Report

M39

TRANSALTA CORPORATION M39

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

As at Dec. 31
Adjusted Net Debt to Adjusted Comparable EBITDA
Period-end long-term debt(1)
Exchangeable securities
Less: 100 per cent of exchangeable preferred shares(2)
Less: Cash and cash equivalents

Less: Principal portion of TransAlta OCP restricted cash
Add: 50 per cent of issued preferred shares and exchangeable preferred shares(2)
Fair value asset of hedging instruments on debt(3)
Adjusted net debt(4)
Comparable EBITDA(5)
Less: PPA Termination Payments(5)
Adjusted comparable EBITDA(5)
Adjusted net debt to adjusted comparable EBITDA (times)

Management’s Discussion and Analysis

2020

3,361 

730 

(400)   

(703)   

(11)   

671 

(2)   

3,646 

927 

— 

927 

3.9 

2019

3,212 

326 

— 

(411)   

(10)   

471 

(7)   

3,581 

984 

(56)   

928 

3.9 

2018

3,267 

— 

— 

(89) 

(27) 

471 

(10) 

3,612 

1,161 

(157) 

1,004 

3.6 

(1) Includes lease liabilities and tax equity financing.
(2) Exchangeable preferred shares are considered equity with dividend payments for credit purposes. For accounting purposes, they are accounted for as debt with 
interest expense in the Consolidated Financial Statements. 
(3) Included in risk management assets and/or liabilities on the consolidated financial statements as at Dec. 31, 2020, Dec. 31, 2019, and Dec. 31, 2018.
(4) The tax equity financing for Skookumchuck, an equity accounted joint venture, is not represented in the amounts.
(5) Last 12 months. 

Our  target  for  adjusted  net  debt  to  comparable  EBITDA  is  3.0  to  3.5  times.  Our  adjusted  net  debt  to  comparable 
EBITDA ratio was consistent to 2019, as adjusted net debt only increased slightly during the year.

M40

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M40

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

In addition to reviewing fully consolidated ratios and results, management reviews net debt to comparable EBITDA on a 
deconsolidated  basis  to  highlight  TransAlta's  financial  flexibility,  balance  sheet  strength  and  leverage,  excluding  the 
Deconsolidated Net Debt to Deconsolidated Comparable EBITDA
portion of TransAlta Renewables and TransAlta Cogeneration L.P. ("TA Cogen") that are not owned by TransAlta. These 
metrics and ratios are not defined under IFRS, and may not be comparable to those used by other entities or by rating 
agencies. See also the IFRS Measures and Non-IFRS Measures section of this MD&A for further details. 

As at Dec. 31

Period-end long-term debt(1)

Exchangeable securities

Less: 100 per cent of exchangeable preferred shares(2)

Less: Cash and cash equivalents

Add: TransAlta Renewables cash and cash equivalents(3)

Less: Principal portion of TransAlta OCP restricted cash

Add: 50 per cent of issued preferred shares(2)

Fair value asset of hedging instruments on debt(4)

Less: TransAlta Renewables long-term debt

Less: US tax equity financing and South Hedland debt(5)

Deconsolidated net debt

Comparable EBITDA(6)(7)
Less: PPA Termination Payments(6)

Less: TransAlta Renewables comparable EBITDA(6)

Less: TA Cogen comparable EBITDA(6)

Less: comparable EBITDA from equity accounted investments(8)

Add: Dividends from TransAlta Renewables(6)

Add: Dividends from TA Cogen(6)

Deconsolidated comparable EBITDA(6)(7)

Deconsolidated net debt to deconsolidated comparable EBITDA(6)(7) (times)

2020

3,361 

730 

(400)   

(703)   

582 

(11)   

671 

(2)   

(692)   

(905)   

2019

3,212 

326 

— 

(411)   

63 

(10)   

471 

(7)   

(961)   

(145)   

2,631 

2,538 

927 

— 

(462)   

(54)   

(3)   

151 

17 

576 

4.6 

984 

(56)   

(438)   

(80)   

— 

151 

37 

598 

4.2 

2018

3,267 

— 

— 

(89) 

73 

(27) 

471 

(10) 

(932) 

(28) 

2,725 

1,161 

(157) 

(430) 

(181) 

— 

151 

86 

630 

4.3 

(1) Includes lease liabilities and tax equity financing.
(2) Exchangeable preferred shares are considered equity with dividend payments for credit purposes. For accounting purposes, they are accounted for as debt with 
interest expense in the Consolidated Financial Statements. 
(3) In the second quarter of 2020, we adjusted the calculation to remove the portion of cash relating to TransAlta Renewables' cash and cash equivalents to reflect 
deconsolidated cash. Prior periods have also been updated.
(4) Included in risk management assets and/or liabilities on the consolidated financial statements as at Dec. 31, 2020, Dec. 31, 2019, and Dec. 31, 2018.
(5) Relates to assets where TransAlta Renewables has economic interests.
(6) Last 12 months. 
(7) During the fourth quarter of 2020, we revised comparable EBITDA to exclude the interest on the AESO transmission line loss. 
(8) Represents our share of amounts for Skookumchuck, an equity accounted joint venture.

Our target for deconsolidated net debt to deconsolidated comparable EBITDA is 2.5 to 3.0 times. Our deconsolidated 
net debt to deconsolidated comparable EBITDA ratio increased compared with 2019, as higher deconsolidated net debt 
was partially offset by higher deconsolidated comparable EBITDA. 

TransAlta Corporation    |    2020  Annual Integrated Report

M41

TRANSALTA CORPORATION M41

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

Comparable  EBITDA  is  a  key  metric  for  TransAlta  and  TransAlta  Renewables  and  provides  management  and 
shareholders a representation of core business profitability. Deconsolidated EBITDA is used in key planning and credit 
Deconsolidated Comparable EBITDA by Segment
metrics  and  segment  results  highlight  the  operating  performance  of  assets  held  directly  at  TransAlta  that  are 
comparable from period to period.  

A reconciliation of comparable EBITDA to deconsolidated comparable EBITDA by segment results is set out below: 

TransAlta 
Consolidated

TransAlta 
Renewables

TransAlta 
Deconsolidated

TransAlta 
Consolidated

TransAlta 
Renewables

TransAlta 
Deconsolidated

TransAlta 
Consolidated

TransAlta 
Renewables

TransAlta 
Deconsolidated

2020

2019

2018

110 

231 

120 

118 

319 

73 

89 

(76) 

984 

18 

238 

82 

120 

— 

— 

— 

(20) 

438 

105 

248 

117 

124 

162 

139 

113 

(81) 

927 

21 

256 

80 

125 

— 

— 

— 

(20) 

462 

Hydro

Wind and Solar

North American Gas

Australian Gas

Alberta Thermal

Centralia

Energy Marketing

Corporate

Comparable EBITDA(1)(2)

Less: TA Cogen comparable
   EBITDA

Less: Termination of 
   Sundance B and C PPAs(1)

Less: EBITDA from joint 
   venture investments(3)

Add: Dividend from 
   TransAlta Renewables((1)

Add: Dividend from 
   TA Cogen(1)

Deconsolidated TransAlta 
   comparable EBITDA

465 

(54) 

— 

(3) 

151 

17 

576 

17 

218 

84 

130 

— 

— 

— 

(19) 

430 

109  

233  

259  

124  

389  

91  

43  

(87) 

546 

1,161 

(80) 

(56) 

— 

151 

37 

598 

731 

(181) 

(157) 

— 

151 

86 

630 

(1) Last 12 months. 
(2) During the fourth quarter of 2020, we revised comparable EBITDA to exclude the interest on the AESO transmission line loss.
(3) Represents our share of amounts for Skookumchuck, an equity accounted joint venture.

M42

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M42

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

The Corporation has set a target to return  10  to  15  per  cent of TransAlta's deconsolidated FFO to shareholders  as it 
aligns shareholder returns to the assets held directly at TransAlta. This metric is not defined and has no standardized 
Deconsolidated FFO
meaning under IFRS, and may not be comparable to those used by other entities or by rating agencies. See also the IFRS 
Measures and Non-IFRS Measures section of this MD&A for further details. Deconsolidated FFO for the years ended 
Dec. 31 is detailed below:

TransAlta 
Consolidated

TransAlta 
Renewables

TransAlta 
Deconsolidated

TransAlta 
Consolidated

TransAlta 
Renewables

TransAlta 
Deconsolidated

TransAlta 
Consolidated

TransAlta 
Renewables

TransAlta 
Deconsolidated

2020

2019

2018

702 

267 

849 

331 

820 

385 

(89)   

31 

(121)   

(23) 

44 

5 

613 

298 

728 

308 

864 

390 

17 

37 

3 

— 

— 

15 

685 

— 

— 

— 

(69) 

148 

— 

377 

— 

— 

(76) 

146 

— 

378 

24 

— 

— 

— 

— 

5 

308  

757 

151 

(17) 

(3) 

— 

439 

— 

— 

(171) 

162 

— 

381 

59 

— 

— 

— 

4 

379  

927 

151 

(37) 

— 

(56) 

437 

546

151 

(86) 

— 

(157) 

454 

Cash flow from operating 
   activities

Change in non-cash 
    operating working capital 
    balances

Cash flow from operations 
   before changes in working 
   capital

Adjustments:

   Decrease in finance lease 
       receivable

   Coal inventory writedown

Share of FFO from joint   
 venture(1)

   Finance and interest 
      income - economic
      interests

   Adjusted FFO - economic 
      interests

   Other

FFO

Dividend from TransAlta 
    Renewables

Distributions to TA Cogen's
   Partner

Less: Share of adjusted FFO
   from joint venture(1)

Less: PPA Termination 
   Payments

Deconsolidated 
   TransAlta FFO

(1) Represents our share of amounts for Skookumchuck, an equity accounted joint venture.

TransAlta Corporation    |    2020  Annual Integrated Report

M43

TRANSALTA CORPORATION M43

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

The following table highlights significant changes in the consolidated statements of financial position from Dec. 31, 
2019, to Dec. 31, 2020:
Financial Position

Increase

Assets

Cash and cash equivalents

Restricted cash

Trade and other receivables

Risk management assets (current and long-term)

Assets held for sale

Investments

Finance lease receivables (long-term)

Property, plant and equipment, net

Deferred income tax assets
Others(1)
Total assets

Liabilities and equity

Accounts payable and accrued liabilities

Credit facilities, long-term debt and lease liabilities (current and 
   long-term)

Exchangeable securities

Decommissioning and other provisions (current and long-term)

Risk management liabilities (current and long-term)

Deferred income tax liabilities

Equity attributable to shareholders
Others(2)
Total liabilities and equity

Dec. 31, 2020

Dec. 31, 2019

(decrease)

703 

71 

583 

692 

105 

100 

228 

5,822 

51 

1,392 

9,747 

599 

3,361 

730 

673 

162 

396 

2,352 

1,474 

9,747 

411 

32 

462 

806 

— 

— 

176 

6,207 

18 

1,396 

9,508 

413 

3,212 

326 

546 

110 

472 

2,961 

1,468 

9,508 

292 

39 

121 

(114) 

105 

100 

52 

(385) 

33 

(4) 

239 

186 

149 

404 

127 

52 

(76) 

(609) 

6 

239 

(1) Includes prepaid expenses, inventory, right-of-use assets, intangible assets, goodwill and other assets.
(2) Includes income taxes payable, dividends payable, contract liabilities, defined benefit obligation and other long-term liabilities and non-controlling interests. 

M44

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M44

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

Significant changes in TransAlta's consolidated statements of financial position were as follows:

▪
▪

▪

▪

▪
▪
▪
▪

▪

▪
▪

▪

▪

▪

See the cash flow section of this MD&A for details on the change in cash during the period. 
Restricted cash increased by $45 million related to the TEC Notes, offset by a reduction in the Big Level and 
Antrim restricted cash balances.   
Trade  and  other  receivables  increased  largely  due  to  timing  of  customer  receipts,  partially  offset  by  lower 
collateral payments.
Risk  management  assets,  net  of  liabilities,  decreased  primarily  due  to  contract  settlements  and  changes  in 
market prices and foreign exchange rates. 
Assets held for sale relate primarily to the future sale of the Pioneer Pipeline.
Investments increased due to the acquisition of Skookumchuck and EMG during the fourth quarter of 2020.
Finance lease receivables increased in the year with the execution of the BHP Nickle West contract extension.
PP&E  decreased  due  to  depreciation  ($717  million),  the  reclass  of  pipeline  and  certain  mining  equipment  to 
assets  held  for  sale  ($105  million),  the  reclass  of  the  Southern  Cross  facility  to  finance  lease  receivables 
($69 million) and asset impairments ($81 million). This was partially offset by additions ($486 million) relating 
to  assets  under  construction  for  the  conversion  to  gas,  the  Windrise  wind  facility,  WindCharger  battery 
storage  project,  the  Kaybob  cogeneration  project,  land  and  planned  major  maintenance  expenditures.  In 
addition,  there  were  net  revisions  for  increasing  decommissioning  provisions  as  a  result  of  changes  in  cash 
flows and discount rates ($94 million).
Deferred  income  tax  assets  increased  mainly  due  to  lower  earnings  in  Canada  compared  to  the  same  period 
last year.
Accounts payable and accrued liabilities increased largely due to timing of payments for operational payables. 
Credit  facilities,  long-term  debt  and  lease liabilities  increased  due  to  TEC  Notes  issued  in  the  fourth quarter 
2020.  This was partially offset by the repayment of $400 million of debentures, repayment of the credit facility 
($106 million) and other scheduled principal payments ($86 million).
Exchangeable  securities  increased  due  to  the  $400  million  invested  by  Brookfield  on  Oct.  30,  2020,  in 
exchange for redeemable, retractable first preferred shares as part of the Brookfield Investment.
Decommissioning  and  other  provisions  have  increased  mainly  due  to  revisions  in  estimated  cash  flows  ($72 
million),  changes  in  discount  rates  ($36  million),  liabilities  incurred  ($35  million)  and  accretion  ($30  million), 
which was partially offset by liabilities settled ($37 million).
Equity attributable to shareholders decreased mainly due to net losses for the period ($287 million), common 
and preferred share dividend payments ($107 million), net losses on cash flow hedges ($91 million), fair value 
investments  losses  ($50  million),  actuarial  losses  on  defined  benefit  plans  ($11  million)  and  the  share 
repurchases under the NCIB ($61 million).

TransAlta Corporation    |    2020  Annual Integrated Report

M45

TRANSALTA CORPORATION M45

Management’s Discussion and Analysis

Management’s Discussion and Analysis

The following chart highlights significant changes in the consolidated statements of cash flows for the years ended Dec. 
31, 2020, Dec. 31, 2019, and Dec. 31, 2018:
Cash Flows

Year ended Dec. 31

Cash and cash equivalents, beginning of year

Provided by (used in):

Operating activities

Investing activities

Financing activities

Translation of foreign currency cash

Cash and cash equivalents, end of year

Year ended Dec. 31

Cash and cash equivalents, beginning of year

Provided by (used in):

Operating activities

Investing activities

Financing activities

Translation of foreign currency cash

Cash and cash equivalents, end of year

2020

411 

702 

(687)   

272 

5 

703 

2019

89 

849 

(512)   

(14)   

(1)   

411 

2019

89 

849 

(512)   

(14)   

(1)   

411 

2018

314 

820 

(394)   

(651)   

— 

89 

Increase/ 
(decrease)

322 

(147) 

(175) 

286 

6 

292 

Increase/ 
(decrease)

(225) 

29 

(118) 

637 

(1) 

322 

Cash provided by operating activities for the year ended Dec. 31, 2020, was lower compared with 2019 primarily due to 
lower revenues in 2020.

Cash used in investing activities for the year ended Dec. 31, 2020, increased compared with 2019, largely due to: 

▪
▪

▪

Increase due to the investments in Skookumchuck and EMG ($102 million); 
Changes in our restricted cash ($73 million), increased cash spent on construction activities ($69 million) and 
higher  non-cash  working  capital  related  to  the  timing  of  construction  payables  for  the  assets  under 
construction ($54 million); and
Offset by lower cash spent on acquisitions (TransAlta acquired Ada for $32 million in 2020, compared with the 
Kineticor acquisition of $87 million and the Pioneer Pipeline acquisition of $83 million in 2019).

Cash from financing activities for the year ended Dec. 31, 2020, increased compared with 2019, largely due to:

▪
▪

Issuance of long-term debt ($753 million) in 2020 and the exchangeable securities of $400 million; and
Higher  debt  repayments  ($380  million)  as  a  result  of  higher  scheduled  principal  repayments  on  project  debt 
($393 million) offset by lower payments on the credit facilities ($13 million).

M46

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M46

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

The Corporation is focused on maintaining a strong balance sheet and financial position to ensure access to sufficient 
financial  capital.  Credit  ratings  provide  information  relating  to  the  Corporation's  financing  costs,  liquidity  and 
Financial Capital
operations  and  affect  the  Corporation's  ability  to  obtain  short-term  and  long-term  financing  and/or  the  cost  of  such 
financing. Maintaining a strong balance sheet also allows our commercial team to contract the Corporation’s portfolio 
with  a  variety  of  counterparties  on  terms  and  prices  that  are  favourable  to  the  Corporation’s  financial  results  and 
provide TransAlta with better access to capital markets through commodity and credit cycles. 

During  2020,  Moody’s  reaffirmed  its  issuer  rating  of  Ba1  with  a  stable  outlook;  DBRS  Limited  reaffirmed  the 
Corporation’s Unsecured Debt rating and Medium-Term Notes rating of BBB (low), the Preferred Shares rating of Pfd-3 
(low)  and  Issuer  Rating  of  BBB  (low)  with  a  stable  outlook;  and  Standard  and  Poor’s  reaffirmed  the  Corporation’s 
Unsecured  Debt  rating  and  Issuer  Rating  of  BB+  with  a  stable  outlook.  Risks  associated  with  our  credit  ratings  are 
discussed in the Governance and Risk Management section of this MD&A.

TransAlta Corporation    |    2020  Annual Integrated Report

M47

TRANSALTA CORPORATION M47

Management’s Discussion and Analysis

Management’s Discussion and Analysis

Our capital structure consists of the following components as shown below:
Capital Structure
As at Dec. 31

2020

2019

2018

 $ 

 % 

 $ 

 % 

 $ 

 % 

TransAlta Corporation

Recourse debt - CAD debentures

Recourse debt - US senior notes 
Exchangeable securities(1)
Credit facilities

Other

Less: cash and cash equivalents
Less: 50 per cent of exchangeable preferred shares(1)
Less: principal portion of restricted cash on TransAlta OCP

Less: fair value asset of economic hedging instruments on debt

249 

886 

730 

114 

7 

(121) 

(200) 

(11) 

(2) 

 3 

 13 

 11 

 2 

 — 

 (2)   

 (3)   

 — 

 — 

647 

905 

326 

— 

9 

(348)   
— 

(10)   

(7)   

Net recourse debt, excluding US tax equity financing

  1,652 

 24 

  1,522 

Non-recourse debt

Lease liabilities

US tax equity financing for TransAlta Renewables economic 
interests(2)
Non-recourse debt for TransAlta Renewables economic interests(3)

385 

112 

134 

782 

 6 

 2 

 2 

 11 

426 

119 

145 

— 

Total net debt - TransAlta Corporation

  3,065 

 45 

  2,212 

TransAlta Renewables

Credit facility

Less: cash and cash equivalents

Net recourse debt

Non-recourse debt

Lease liabilities

Total net debt - TransAlta Renewables
Total consolidated net debt(4)
Non-controlling interests
50 percent of exchangeable preferred securities(1)
Equity attributable to shareholders

Common shares

Preferred shares

— 

(582) 

(582) 

670 

22 

110 

 — 

 (9)   

 (9)   

 10 

 — 

 1 

220 

(63) 

157 

718 

23 

898 

  3,175 

  1,084 

 46 

  3,110 

 16 

  1,101 

200 

 3 

— 

  2,896 

 43 

  2,978 

942 

 14 

942 

9 

13 

5 

— 

— 

(5) 

— 

— 

— 

22

 6 

 2 

 2 

 — 

 32 

 3 

 (1) 

 2 

 10 

 — 

 12 

 44 

 15 

— 

 42 

 13 

 647 

 943 

 — 

 174 

 11 

 (16) 

 — 

 (27) 

 (10) 

 1,722 

 469 

 63 

 28 

 — 

 2,282 

 165 

 (73) 

 92 

 767 

 — 

 859 

 3,141 

 1,137 

— 

 3,059 

 942 

 9 

 13 

 — 

 2 

 — 

 — 

 — 

 — 

 — 

 24 

 6 

 1 

 — 

 — 

 31 

 2 

 (1) 

 1 

 11 

 — 

 12 

 43 

 16 

— 

 42 

 13 

Contributed surplus, deficit and accumulated other comprehensive
   income

Total capital

(1,486) 

 (22)   

(959) 

 (14) 

 (1,004) 

  6,811 

 100 

  7,172 

 100 

 7,275 

 (14) 

 100 

(1) Exchangeable preferred securities are considered equity with dividend payments for credit purposes. For accounting purposes, they are accounted for as debt with 
interest expense in the Consolidated Financial Statements. 
(2) TransAlta Renewables has an economic interest in the entities holding these debts.
(3) TransAlta Renewables has an economic interest in the Australia entities, which includes the AU$800 million senior secured notes.
(4) The tax equity financing for Skookumchuck, an equity accounted joint venture, is not represented in these amounts.

We continued strengthening our financial position during 2020 and have sufficient liquidity to fund our growth strategy. 
We have enhanced shareholder value by:

2020
▪
▪

▪
▪

Obtaining AU$800 million in project financing related to our South Hedland facility;
On  Oct.  30,  2020,  we  received  the  second  tranche  of  $400  million  from  Brookfield  in  consideration  for 
redeemable, retractable first preferred shares; 
Redeeming our outstanding 5 per cent $400 million medium-term notes due on Nov. 25, 2020; and
Purchasing and cancelling 7,352,600 common shares at an average price of $8.33 per share through our NCIB 
program, for a total cost of $61 million.

M48

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M48

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

2019
▪
▪

▪

2018
▪

▪

▪
▪

Obtaining US$126 million in tax equity financing to fund the Big Level and Antrim wind facilities;
Entering into a strategic investment with Brookfield whereby Brookfield agreed to invest $750 million in the 
Corporation. On May 1, 2019, we received the initial tranche of $350 million in exchange for seven per cent 
unsecured  subordinated  debentures  due  May  1,  2039,  which  are  exchangeable  by  Brookfield  into  an  equity 
ownership interest in our Alberta Hydro Assets in the future; and 
Purchasing and cancelling 7,716,300 common shares at an average price of $8.80 per share through our NCIB 
program, for a total cost of $68 million.

Early  redeeming  our  outstanding  6.65  per  cent  US$500  million  senior  notes  due  May  15,  2018,  for 
approximately  $617  million  (US$516  million)  using  proceeds  from  the  Sundance  B  and  C  PPAs  termination 
payment and existing liquidity;
Early  redeeming  our  outstanding  6.40  per  cent  $400  million  debentures  due  Nov.  2019,  for  approximately 
$425 million;
Paying out the US$25 million non-recourse debt related to the Mass Solar projects, and
Purchasing and cancelling 3,264,500 common shares at an average price of $7.02 per share through our NCIB 
program, for a total cost of $23 million.

Between 2021 and 2023, we have approximately $1 billion of debt maturing, comprised of approximately $631 million 
of recourse debt, with the balance mainly related to scheduled non-recourse debt repayments. We expect to refinance 
the senior notes maturing in 2022.

The Corporation's credit facilities are summarized in the table below:

As at Dec. 31, 2020

TransAlta Corporation
Committed syndicated bank facility(2)

Canadian committed bilateral credit facilities(3)

TransAlta Renewables
Committed credit facility(2)
Total

Utilized

Facility
size

Outstanding 

letters of credit(1) Actual drawings

Available
capacity

Maturity
date

1,250 

240 

700 
2,190 

379 

150 

92 
621 

114 

757 

Q2 2023

— 

90 

Q2 2021 & 
2022

— 
114 

608 
1,455 

Q2 2023

(1)  TransAlta  has  obligations  to  issue  letters  of  credit  and  cash  collateral  to  secure  potential  liabilities  to  certain  parties,  including  those  related  to  potential 
environmental obligations, commodity risk management and hedging activities, pension plan obligations, construction projects and purchase obligations. At Dec. 31, 
2020, we provided cash collateral of $49 million.
(2) TransAlta has letters of credit of $89 million and TransAlta Renewables has letters of credit of $92 million issued from uncommitted demand facilities; these 
obligations are backstopped and reduce the available capacity on the committed credit facilities. 
(3) One of the bilateral $80 million credit facilities has a maturity date of Q2 2021.

The weakening of the US dollar has decreased our long-term debt balances by $24 million as at Dec. 31, 2020. Almost all 
our US-denominated debt is hedged either through financial contracts or net investments in our US operations. During 
the period, these changes in our US-denominated debt were offset as follows:

As at Dec. 31

Effects of foreign exchange on carrying amounts of US operations 
   (net investment hedge) and finance lease receivable

Foreign currency cash flow hedges on debt

Economic hedges and other

Unhedged

Total

2020

2019

(11)   

(5)   

(5)   

(3)   

(24)   

(21) 

(9) 

(9) 

(3) 

(42) 

TransAlta Corporation    |    2020  Annual Integrated Report

M49
TRANSALTA CORPORATION M49

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

The Melancthon Wolfe Wind, Pingston, TAPC Holdings LP, New Richmond, Kent Hills Wind LP, TEC and TransAlta OCP 
non-recourse bonds with a carrying value of $1.8 billion (Dec. 31, 2019 - $1.1 billion) are subject to customary financing 
conditions  and  covenants  that  may  restrict  the  Corporation’s  ability  to  access  funds  generated  by  the  facilities’ 
operations.  Upon  meeting  certain  distribution  tests,  typically  performed  once  per  quarter,  the  funds  are  able  to  be 
distributed by the subsidiary entities to their respective parent entity. These conditions include meeting a debt service 
coverage  ratio  prior  to  distribution,  which  was  met  by  these  entities  in  the  third  quarter  of  2020.  However,  funds  in 
these entities that have accumulated since the third quarter test will remain there until the next debt service coverage 
ratio can be calculated in the first quarter of 2021. At Dec. 31, 2020, $73 million (Dec. 31, 2019 - $42 million) of cash 
was subject to these financial restrictions.

Additionally, certain non-recourse bonds require that certain reserve accounts be established and funded through cash 
held on deposit and/or by providing letters of credit.

Proceeds received from the TEC Notes in the amount of AU$7 million are not able to be accessed by other Corporate 
entities as the funds must be solely used by the project entities for the purpose of paying major maintenance costs.

Working Capital
Including the current portion of long-term debt and lease liabilities, the excess of current assets over current liabilities 
was $967 million as at Dec. 31, 2020 (2019 - $224 million). Our working capital increased year over year mainly due to 
repayment of the $400 million debenture in 2020. Excluding the current portion of long-term debt and lease liabilities of 
$105 million, the excess of current assets over liabilities was $1.1 billion as at Dec. 31, 2020 (2019 - $737 million), an 
increase of $335 million, mainly due to higher cash and cash equivalents. For further details on changes in cash during 
the year, please refer to the Cash Flows section of this MD&A. 

Share Capital
On March 1, 2021, the Corporation announced that it does not intend to exercise its right to redeem all or any part of 
the currently outstanding Series A Cumulative Fixed Redeemable Rate Reset Preferred Shares ("Series A Shares") and 
Series  B  Cumulative  Redeemable  Floating  Rate  Preferred  Shares  ("Series  B  Shares").  The  Corporation  has  provided  a 
notice  to  the  registered  shareholders  of  Series  A  Shares  of  the  conversion  right,  on  a  one-for-one  basis,  into  Series  B 
Shares,  and  vice  versa,  providing  Series  B  shareholders  the  right  to  exchange  Series  B  Shares,  on  a  one-for-one  basis, 
into Series A Shares. Series A shareholders may elect to retain any or all of their current share holdings and continue to 
receive a fixed rate quarterly dividend.  Series B shareholder may also elect to retain any or all of their current share 
holdings and continue to receive a floating rate quarterly dividend. After exercising conversion rights, if the balance that 
remains  for  either  Series  A  Shares  or  Series  B  Shares  is  less  than  1  million,  that  remaining  balance  will  automatically 
convert to the other Series. Shareholders' notice of intention to convert must be received by the transfer agent no later 
than March 16, 2021 and the conversion date will be effective March 31, 2021. The annual dividend rate for the Series A 
Shares for the five-year period from and including March 31, 2021, to, but excluding, March 31, 2026, will be 2.877 per 
cent,  which  is  equal  to  the  five-year  Government  of  Canada  Bond  yield  of  0.847  per  cent,  determined  as  of  March  1, 
2021, plus 2.03 per cent. The annual dividend rate for the Series B Shares for the three month floating rate period from 
and including March 31, 2021, to, but excluding, June 30, 2021, will be 2.103 per cent based on the most recent auction 
of 90-day Government of Canada Treasury Bills of 0.073 per cent plus 2.03 per cent. The Floating Quarterly Dividend 
Rate will be reset every quarter.  

Our Series C and Series E Cumulative Redeemable Rate Reset Preferred Shares failed to receive the required number of 
minimum votes in 2017 to give effect to conversions into Series D and Series F, respectively; accordingly, both the Series 
C and Series E Preferred Shares will be entitled to receive quarterly fixed cumulative preferential cash dividends, if, as 
and  when  declared  by  the  Board.  The  Series  G  Cumulative  Redeemable  Rate  Reset  Preferred  Shares  also  failed  to 
receive the required number of minimum votes in 2019 to give effect to conversions into Series H. Therefore, the Series 
G  Preferred  Shares  will  be  entitled  to  receive  quarterly  fixed  cumulative  preferential  cash  dividends,  if,  as  and  when 
declared by the Board. 

M50

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M50

 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

The following tables outline the common and preferred shares issued and outstanding:

As at

March 2, 2021

Dec. 31, 2020

Dec. 31, 2019

Number of shares (millions)

Common shares issued and outstanding, end of period

269.9  

269.8 

277.0 

Preferred shares

Series A

Series B

Series C

Series E

Series G

Preferred shares issued and outstanding in equity, end of period

Series I - Exchangeable Securities(1)

Preferred shares issued and outstanding, end of period

10.2 

1.8 

11.0 

9.0 

6.6 
38.6 

0.4 

39.0 

10.2 

1.8 

11.0 

9.0 

6.6 

38.6 

0.4 

39.0 

10.2 

1.8 

11.0 

9.0 

6.6 

38.6 

— 

38.6 

(1) Brookfield invested $400 million in consideration for redeemable, retractable, first preferred shares. For accounting purposes, these preferred share are considered 
debt and disclosed as such in the consolidated financial statements.

Non-Controlling Interests
As  of  Dec.  31,  2020,  we  own  60.1  per  cent  (2019  -  60.4  per  cent)  of  TransAlta  Renewables.  In  2020,  our  ownership 
percent decreased due to TransAlta Renewables issuing approximately 1 million common shares under their Dividend 
Reinvestment Plan ("DRIP"). We did not participate in this plan. 

In the fourth quarter of 2020, TransAlta Renewables suspended the DRIP in respect of any future declared dividends. 
The dividend paid on Oct. 30, 2020, to shareholders of record on Oct. 15, 2020, was the last dividend payment eligible 
for reinvestment by participating shareholders. Subsequent dividends will be paid only in cash.

TransAlta  Renewables  is  a  publicly  traded  company  whose  common  shares  are  listed  on  the  TSX  under  the  symbol 
“RNW.” TransAlta Renewables holds a diversified, highly contracted portfolio of assets with comparatively lower carbon 
intensity. 

We also own 50.01 per cent of TA Cogen, which owns, operates or has an interest in three natural-gas-fired facilities 
(Ottawa, Windsor and Fort Saskatchewan) and one dual-fuel generating facility. Since we own a controlling interest in 
TA Cogen and TransAlta Renewables, we consolidate the entire earnings, assets and liabilities in relation to those assets. 

Reported earnings attributable to non-controlling interests for the year ended Dec. 31, 2020, decreased by $60 million 
to $34 million compared to 2019. Earnings were down at TransAlta Renewables in 2020 mainly due to lower finance 
income  and  change  in  the  fair  value  of  financial  assets  an  increase  in  income  tax  expense,  offset  by  higher  operating 
income and an increase in foreign exchange gains resulting from the strengthening of the Australian dollar relative to 
the Canadian dollar. Earnings from TA Cogen were lower in 2020 mainly due to lower operating income as a result of the 
planned outage for the dual-fuel conversion at Sheerness Unit 2, low Alberta market demand and the onerous contract 
provision for the coal supply agreement (see Note 9 of the consolidated financial statements for further details).

Reported earnings attributable to non-controlling interests for the year ended Dec. 31, 2019, decreased by $14 million 
to $94 million compared to 2018. Earnings were down at TransAlta Renewables in 2019 mainly due to lower finance and 
interest income from subsidiaries of TransAlta, foreign exchange losses due to the weakening of the Australian dollar 
and  higher  depreciation  expense,  partially  offset  by  an  increase  in  the  fair  value  of  investments  in  subsidiaries  of 
TransAlta. Earnings from TA Cogen were higher in 2019 mainly due to strong Alberta pricing and lower costs of fuel at 
the coal-fired generating facility. The coal-fired generating facility was converted to dual-fuel in 2020.

TransAlta Corporation    |    2020  Annual Integrated Report

M51

TRANSALTA CORPORATION M51

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Management’s Discussion and Analysis

Returns to Providers of Capital
Net Interest Expense
The components of net interest expense are shown below:

Year ended Dec. 31

Interest on debt

Interest on exchangeable securities

Interest income

Capitalized interest

Loss on redemption of bonds

Interest on lease liabilities

Credit facility fees, bank charges and other interest
Tax shield on tax equity financing(1)
Interest on the line loss proceeding
Other(2)
Accretion of provisions

Net interest expense

Management’s Discussion and Analysis

2020

158 

34 

(10)   

(8)   

— 

8 

18 

1 

5 

2 

30 

238 

2019

161 

20 

(13)   

(6)   

— 

4 

15 

(35)   

— 

10 

23 

179 

2018

184 

— 

(11) 

(2) 

24 

3 

13 

— 

— 

15 

24 

250 

(1) Relates to the tax benefit associated with bonus tax depreciation claimed in 2019 on the Big Level and Antrim wind projects that was assigned to the tax equity 
investor. The tax equity investment is treated as debt under IFRS and the monetization of the tax depreciation is considered a non-cash reduction of the debt balance 
and is reflected as a reduction in interest expense.
(2) In 2020, other interest expense included approximately nil (2019 — $5 million; 2018 — $7 million) for the significant financing component required under IFRS 
15. In addition, in 2018, approximately $5 million of costs were expensed due to project-level financing that is no longer practicable. 

Net  interest  expense  was  higher  in  2020  primarily  due  to  interest  on  the  additional  $400  million  exchangeable 
preferred  shares  issued  as  part  of  the  Brookfield  Investment  and  the  AU$800  million  TEC  Offering,  both  issued  in 
October 2020. In addition, interest was higher due to interest charges received in 2020 for the AESO transmission line 
loss proceedings, and the 2019 impact of the $35 million tax credit received relating to the tax shield on Big Level and 
Antrim projects offset by the termination of the Keephills 3 contract liability in 2019, resulting in the deferred  financing 
costs being recognized.

Net  interest  expense  was  lower  in  2019  compared  to  2018,  primarily  due  to  the  $35  million  credit  related  to  the  tax 
shield  on  the  Big  Level  and  Antrim  projects  and  allocated  to  the  tax  equity  investor.  In  addition,  there  were  no 
prepayment premiums in 2019 as there were no early redemptions of bonds during the year, compared to 2018, which 
included $24 million in prepayment premiums.

Dividends to Shareholders
The declaration of dividends is at the discretion of the Board. The following are the common and preferred shares 
dividends declared each quarter during 2020 and the first quarter of 2021:

Payable date

Common

dividends

Preferred Series dividends per share

Declaration date Common shares

Preferred shares

per share

A

B

C

E

G

Jan. 16, 2020

Apr 1, 2020

Mar. 31, 2020

0.0425 

  0.16931 

  0.22949 

  0.25169 

  0.32463 

  0.31175 

Apr. 20, 2020

Jul 1, 2020

Jun 30, 2020

0.0425 

  0.16931 

  0.22800 

  0.25169 

  0.32463 

  0.31175 

Jul 22, 2020

Nov. 3, 2020

Oct.1, 2020

Jan. 1, 2021

Sept. 30, 2020

Dec. 31. 2020

0.0425 

  0.16931 

  0.14359 

  0.25169 

  0.32463 

  0.31175 

0.0425 

0.16931

0.13693

0.25169

0.32463

0.31175

Dec. 23, 2020

Apr. 1, 2021

Mar. 31, 2021

0.0450 

0.16931

0.13186

0.25169

0.32463

0.31175

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

The following table outlines our expectation on key financial targets and related assumptions for 2021 and should be 
read in conjunction with the narrative discussion that follows and the Governance and Risk Management section of this 
2021 Financial Outlook
MD&A:

Measure

Comparable EBITDA

FCF

Dividend

Target

$960 million - $1,080 million

$340 million - $440 million

$0.18 per share annualized

Range of key power price assumptions

Market

Alberta Spot

Mid-C Spot (US$)

Power prices ($/MWh)

$58 - $68

US$25 - US$35

Other assumptions relevant to the 2021 financial outlook

Sustaining capital

$175 million  - $210 million

Market Pricing and Hedging Strategy 
For  2021,  power  prices  in  Alberta  are  expected  to  be  higher  than 2020  with  the  expiry  of  the  remaining  PPAs  at  six 
Operations
thermal  facilities  that  transferred  dispatch  control  from  the  Balancing  Pool  to  the  asset  owners,  higher  carbon 
compliance costs, and demand recovery  relative  to  the  economy-wide closures from COVID-19 during most  of 2020; 
however, weather and demand are major factors in actual settled prices. Pacific Northwest power prices for 2021 are 
expected  to  be  comparable  to  or  higher  than 2020,  but  will  depend  on  the  actual  weather  and  hydrology  of  the  year. 
Ontario  power  prices  for  2021  are  expected  to  be  higher  than  2020  prices  if  demand  recovers  from  COVID-19  and 
normal weather is experienced in the province. 

The  objective  of  our  portfolio  management  strategy  in  Alberta  is  to  balance  opportunity  and  risk,  and  to  deliver 
optimization strategies that contribute to our total investment, which includes a return of and on invested capital. We 
can  be  more  or  less  hedged  in  a  given  period,  and  we  expect  to  realize  our  annual  targets  through  a  combination  of 
forward hedging and selling generation into the spot market. The Alberta assets are managed as a portfolio to maximize 
the overall value of generation and capacity from our hydro, wind and energy storage and thermal facilities. Financial 
hedging is a key component of cash flow certainty and the hedges are tied to the portfolio of assets rather than a single 
facility. 

Fuel Costs
For  the  Alberta  thermal  fleet,  we  expect  the  2021  cash  fuel  costs  per  tonne  of  coal  to  be  higher  than  2020  as  mine 
volumes are declining, resulting in slightly less mine cost efficiency. Coal volumes are declining as a result of increased 
gas consumption in the Alberta thermal fleet. This change in fuel mix will drive lower GHG emissions and the combined 
effect will result in lower total fuel and GHG costs for a given volume of power production. 

In the Pacific Northwest of the US, the coal mine adjacent to our Centralia thermal facility is in the reclamation stage. 
Fuel at Centralia has been purchased primarily from external suppliers in the Powder River Basin and delivered by rail. 
In 2020, we amended our fuel and rail contract such that our rail freight costs fluctuate partly with power prices. The 
delivered fuel cost in 2021 is expected to be marginally higher than 2020 costs.

Most of the generation from gas turbine-based power facilities is sold under contracts with pass-through provisions for 
fuel. For gas generation with no pass-through provisions, we purchase natural gas from outside companies coincident 
with production, thereby minimizing our risk to changes in prices.

We closely monitor the risks associated with changes in electricity and input fuel prices on our future operations and, 
where  we  consider  it  appropriate,  use  various  physical  and  financial  instruments  to  hedge  our  assets  and  operations 
from such price risks.

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Energy Marketing
EBITDA from our Energy Marketing segment is affected by prices and volatility in the market, overall strategies adopted 
and  changes  in  regulation  and  legislation.  We  continuously  monitor  both  the  market  and  our  exposure  to  maximize 
earnings while still maintaining an acceptable risk profile. Our 2021 objective for Energy Marketing is for the segment to 
contribute between $90 million to $110 million in gross margin for the year.

Exposure to Fluctuations in Foreign Currencies
Our strategy is to minimize the impact of fluctuations in the Canadian dollar against the US dollar and Australian dollar 
by  offsetting  foreign-denominated  assets  with  foreign-denominated  liabilities  and  by  entering  into  foreign  exchange 
contracts. We also have foreign-denominated expenses, including interest charges, which largely offset our net foreign-
denominated revenues.

Net Interest Expense
Interest expense for 2021 is expected to be higher than in 2020 largely due to higher levels of debt. The increase in debt 
is mainly due to the AU$800 million TEC Offering and the $400 million exchangeable preferred shares issued as part of 
the Brookfield Investment, both occurring in October 2020. The increase in debt is offset by repayment of $400 million 
medium-term notes in November 2020. In addition, changes in interest rates on variable debt, and in the value of the 
Canadian dollar relative to the US and Australian dollars can affect the amount of interest expense incurred.

Liquidity and Capital Resources
We expect to maintain adequate available liquidity under our committed credit facilities. We currently have access to 
$2.1 billion in liquidity, including $703 million in cash. We expect to be well positioned to refinance the upcoming debt 
maturity in 2022. Please refer to the Corporate Strategy and Financial Capital sections of this MD&A for further details. 

Sustaining and Productivity Capital Expenditures
Our estimate for total sustaining and productivity capital is allocated among the following:

Category
Routine capital(1)
Planned major maintenance

Description

Capital required to maintain our existing generating capacity

Regularly scheduled major maintenance

Mine capital

Capital related to mining equipment and land purchases

Total sustaining capital

Insurance recoveries of sustaining
   capital expenditures

Insurance proceeds: 2019 relates to the tower fires at 
Wyoming Wind and Summerview

Total sustaining capital

Productivity capital

Projects to improve power production efficiency and 
corporate improvement initiatives

Total sustaining and productivity capital

(1)  Includes hydro life extension expenditures.

Spent in 
2019

Spent in 
2020

Expected 
spend in 
2021

50 

68 

23 

52 

  44  - 54

98 

 130  - 154

7 

  1  - 2

141 

157 

 175  - 210

(10)   

131 

9 

140 

— 

  —  - —

157 

 175  - 210

4 

  3  - 7

161 

 178  - 217

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Significant planned major outages at TransAlta's operated units for 2021 include the following:

▪ Major maintenance turnarounds at Keephills Units 2 and 3;
▪
▪

Distributed planned maintenance expenditures across the entire hydro fleet; and
Distributed expenditures across our wind fleet, focusing on planned component replacements.

There is also one major planned outage at one of our non-operated units in 2021:

▪

An  outage  for  major  maintenance  at  Sheerness  Unit  1  is  in  progress  with  expected  completion  in  the  first 
quarter of 2021. This work will be undertaken in parallel with the conversion to gas of this unit.

Lost production as a result of planned major maintenance, excluding planned major maintenance for Centralia, which is 
scheduled during a period of dispatch optimization, is estimated as follows for 2021:

GWh lost

Coal

Gas and
renewables

Total

1,600-1,700

550-600

2,150-2,300

Funding of Capital Expenditures
Funding  for  these  planned  capital  expenditures  is  expected  to  be  provided  by  cash  flow  from  operating  activities  and 
existing liquidity. In addition, we have access to approximately $2.1 billion, including $703 million in cash, as required. 
The  funds  required  for  committed  growth,  sustaining  capital  and  productivity  projects  are  not  expected  to  be 
significantly impacted by the current economic environment.

A significant portion of our sustaining and productivity capital is planned major maintenance, which includes inspection, 
repair  and  maintenance  of  existing  components,  and  the  replacement  of  existing  components.  Planned  major 
maintenance costs are capitalized as part of PP&E and are amortized on a straight-line basis over the term until the next 
major  maintenance  event.  These  costs  exclude  amounts  for  day-to-day  routine  maintenance,  unplanned  maintenance 
activities and minor inspections and overhauls, which are expensed as incurred.  

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Supply  and  demand  balances  are  the  fundamental  drivers  of  prices  for  electricity.  Underlying  economic  growth  is  the 
main  driver  of  longer-term  changes  in  the  demand  for  electricity,  whereas  system  capacity,  natural  gas  prices,  GHG 
Competitive Forces
pricing, government subsidies and renewable resource availability are key drivers to the supply. Growth in behind-the-
fence generation for mining investments is key to developing our Australian gas segment.

Renewable  capacity  additions  will  continue  as  a  result  of  government  policy  and  evolving  corporate  stakeholder 
objectives.  New  supply  in  the  near  term  and  intermediate  term  is  expected  to  come  primarily  from  investment  in 
renewable electricity as well as natural-gas-fired generation. This expectation is driven by the low prices in the natural 
gas market combined with public policies that favour carbon emission reductions.

We have substantial merchant capacity in Alberta and the Pacific Northwest. In those regions, we enter into contracts 
and business relationships with commercial and industrial customers to sell power for various terms, up to our available 
capacity  in  the  markets.  We  can  further  reduce  the  portion  of  production  not  sold  in  advance  of  the  spot  markets 
through short-term physical and financial  contracts, and  we optimize production in real time against our position and 
market conditions. 

We  also  compete  for  long-term  contracted  opportunities  in  renewable  and  gas  power  generation,  including 
cogeneration, across Canada, the US and Australia. Our target customers in this area are incumbent utility providers and 
large industrial and mining operators.

Approximately  54  per  cent  of  our  gross  installed 
capacity is located in Alberta. Previously, 45 per cent of 
Alberta
this was subject to legislated Alberta PPAs, all of which 
have expired as of Dec. 31, 2020. 

Our  portfolio  of  merchant  assets  in  Alberta  is  a 
combination of hydro facilities, wind facilities, a battery 
storage facility and co-fired and converted natural gas-
fired  thermal  facilities.  This  balance  of  fuel  types 
provides us with portfolio generation diversification. It 
also provides us with capacity that can be monetized as 
ancillary services or dispatched into the energy market 
during  times  of  supply  tightness.  We  also  enter  into 
financial  contracts  to  reduce  our  exposure  to  variable 
power prices on our merchant generation. 

Alberta Average Spot Electricity Prices

h
W
M
/
$
n
d
C

$47

$55

$50

2020

2019

2018

Our  Clean  Energy  Investment  Plan,  which  includes  converting  our  existing  Alberta  coal  facilities  to  natural  gas,  will 
position  TransAlta's  fleet  as  a  low-cost  generator  in  Alberta.  Please  refer  to  the  Corporate  Strategy  section  of  this 
MD&A for further details. 

Alberta's  annual  demand  contracted  approximately  2.5  per  cent  from  2019  to  2020  due  to  the  combined  impacts  of 
COVID-19 and oil production shut-ins. The drop in demand was most significant in the second and third quarters. The 
average  pool  price  decreased  from  $55/MWh  in  2019  to  $47/MWh  in  2020.  Pool  prices  were  lower  in  each  quarter 
compared to 2019, with additional weakness during the second quarter as a result of higher power imports into Alberta. 
Our market share of offer control in Alberta in 2020 was approximately 21 per cent.

In late November 2016, we announced that we entered into an Off-Coal Agreement with the Government of Alberta 
that  provides  transition  payments  for  the  cessation  of  coal-fired  emissions  from  the  Keephills  3,  Genesee  3  and 
Sheerness  coal-fired  facilities  on  or  before  Dec.  31,  2030.  The  Oct.  1,  2019  swap  of  the  Corporation's  50  per  cent 
ownership  interest  in  Genesee  3  for  the  50  percent  interest  in  Keephills  3  did  not  impact  the  transition  payments 
received under the Off-Coal Agreement. The affected facilities are not, however, precluded from generating electricity 
at any time by any method other than the combustion of coal. 

We expect additional compliance costs as a result of the Canadian federal government’s Greenhouse Gas Pollution Pricing 
Act, which sets a national price on GHG emissions with each province expected to implement a GHG policy equivalent to 
a carbon price of $50 per tonne by 2022. We believe that our extensive portfolio of assets provides us with brownfield 

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

development  opportunities  in  wind,  solar,  hydro  and  gas  that  give  us  a  cost  advantage  over  competitors  when 
constructing generation facilities that use these fuel types.

Pursuant to the Electric Utilities Act (Alberta), the Balancing Pool announced the complete termination of the Sundance B 
and  C  PPAs,  effective  March  31,  2018.  As  of  April  1,  2018,  the  Sundance  facility  has  been  operated  as  a  merchant 
facility.  

Our  capacity  in  the  US  Pacific  Northwest  has  been 
represented by our 1,340 MW Centralia thermal facility. 
US Pacific Northwest
Half  of  the  facility's  capacity  was  retired  at  the  end  of 
2020 and the other half is scheduled to retire at the end 
of  2025.  Our  competitiveness  is  enhanced  by  our  long-
term  contract  with  Puget  Sound  Energy  for  up  to  380 
MW over the remaining life of the facility. We enter into 
short-term  hedges  for  the  remaining  generation  and  can 
satisfy  these  or  our  long-term  contract  with  power 
purchased from the market during low-priced periods.

h
W
M
/
$
S
U

US Pacific Northwest Average Spot Electricity
Prices

$21

$37

$31

2020

2019

2018

Installed  capacity  in  the  region  is  primarily  comprised  of  hydro  and  gas  generation,  with  substantial  wind  capacity  as 
well,  including  our  Skookumchuck  wind  facility,  which  began  production  in  November  2020.  Demand  growth  in  the 
region has been limited and further constrained by an emphasis on energy efficiency. 

We  maintain  the  right  to  redevelop  Centralia  as  a  gas  facility  after  coal  capacity  retires,  with  an  opportunity  for 
expedited  permitting  provided  for  in  our  agreement  for  coal  transition  established  with  the  State  of  Washington  in 
2011.

The  market  for  developing  or  acquiring  gas  and  renewable  generation  facilities  is  highly  competitive  in  all  markets  in 
Contracted Gas and Renewables
which  we  operate.  Our  solid  record  as  operator  and  developer  supports  our  competitive  position.  We  expect,  where 
possible, to reduce our cost of capital and improve our competitive profile by using project financing and leveraging the 
lower  cost  of  capital  with  TransAlta  Renewables.  In  the  US,  our  substantial  tax  attributes  further  increase  our 
competitiveness.

While depressed commodity prices have reduced sectoral growth in the oil, gas and mining industries, the change is also 
creating opportunities for us as a service provider as some of our potential customers are more carefully evaluating non-
core  activities  and  driving  for  operational  efficiencies.  In  renewables,  we  are  primarily  evaluating  greenfield 
opportunities in Western Canada and the US along with acquisitions in markets in which we have existing operations. 
We  maintain  highly  qualified  and  experienced  development  teams  to  identify  and  develop  these  opportunities.  In 
cogeneration, we are working with customers to evaluate behind-the-fence solutions.  

Some  of  our  older  gas  facilities  are  now  reaching  the  end  of  their  original  contract  life.  The  facilities  generally  have  a 
substantial  cost  advantage  over  new  builds  and  we  have  been  able  to  add  value  by  recontracting  these  facilities  with 
limited  life  extending  capital  expenditures.  We  have  recently  extended  the  life  of  our  Ottawa  (2033  expiry),  Windsor 
(2031  expiry),  Parkeston  (2026  expiry),  Fort  Saskatchewan  (2030  expiry)  and  Southern  Cross  (2038)  facilities  in this 
manner.  

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

We  monitor  availability  closely  as  a  key  metric  to  achieving  our  financial  targets.  We  adjust  our  maintenance  and 
sustaining  capital  expenditures  to  optimize  financial  returns  on  our  investments  and  to  align  with  our  strategic 
Power-Generating Portfolio Capital
intentions.

We achieved 85 per cent (2019 - 89 per cent, 2018 -93 
per  cent)  availability  in  Alberta  Thermal,  a  decrease 
Availability and Production
from  the  prior  year  due  to  planned  outages.  North 
American Gas achieved 97 per cent (2019 - 95 per cent, 
2018  -  93  per  cent)  and  Wind  and  Solar  achieved  95 
per  cent  (2019  -  95  per  cent,  2018  -  95  per  cent). 
Australian  Gas  achieved  94  per  cent  (2019  -  91  per 
cent,  2018  -  94  per  cent),  with  the  increase  being  the 
result of unplanned outages in 2019.

2020

2019

2018

Adjusted Availability (%)

90.3

90.0

91.3

Our availability for the entire fleet in 2020, after adjusting for dispatch optimization at Centralia, was 90 per cent (2019 
- 90 per cent, 2018 - 91 per cent), consistent with last year. Lower planned and unplanned outages and derates within 
the  generation  segments  were  offset  by  the  planned  outages  at  Alberta  Thermal  for  the  Sundance  Unit  6  turnaround 
and conversion to gas outage.  

Production  for  the  year  ended  Dec.  31,  2020, 
decreased 4,091 GWh compared to 2019. Of the total 
decrease,  2,822  GWh  was  primarily  due  to  planned 
outages,  curtailments  and  dispatch  optimization 
reducing  merchant  production  for  Alberta  Thermal.  In 
addition, Centralia experienced reduced production of 
2,021  GWh  due  to  lower  merchant  pricing,  timing  of 
dispatch  optimization,  and  both  Centralia  units  being 
taken out of service for the majority of the first half of 
2020. 

2020

2019

2018

Production (GWh)

24,980

29,071

28,409

We are in a long-cycle, capital-intensive business that requires significant capital expenditures. Our goal is to undertake 
sustaining capital that ensures our facilities operate reliably and safely over a long period of time. 
Sustaining Capital
Year ended Dec. 31

2018

2020

2019

Routine capital

Mine capital

Planned major maintenance

Total sustaining capital expenditures

Productivity capital

Total sustaining and productivity capital expenditures

Insurance recoveries of sustaining capital expenditures

Net amount

Lost production as a result of planned major maintenance is as follows:

Year ended Dec. 31
GWh lost(1)

52 

7 

98 

157 

4 

161 

— 

161 

50 

23 

68 

141 

9 

150 

(10)   

140 

50 

42 

58 

150 

21 

171 

(7) 

164 

2020

980 

2019

935 

2018

381 

(1) Lost production excludes periods of planned major maintenance at Centralia, which occur during periods of dispatch optimization.

Total sustaining capital expenditures were $16 million higher compared to 2019 and total productivity capital was $5 
million lower in 2020 compared to 2019. The increased focus on sustaining capital expenditures related to the planned 
major maintenance at Alberta Thermal for Sundance Unit 6 and conversion to gas outage. In addition, Wind and Solar 
had sustaining capital expenditures for the Kent Hills foundation work.

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

As  part  of  the  Corporation’s  monitoring  controls,  long-range  forecasts  are  prepared  for  each  cash-generating  unit 
Other Consolidated Analysis
("CGU"). The long-range forecast estimates are used to assess the significance of potential indicators of impairment and 
Asset Impairment Charges and Reversals
provide criteria to evaluate adverse changes in operations. The Corporation also considers the relationship between our 
market  capitalization  and  our  book  value,  among  other  factors,  when  reviewing  for  indicators  of  impairment.  When 
indicators of impairment are present, the Corporation estimates a recoverable amount for each CGU by calculating an 
approximate  fair  value  less  costs  of  disposal  using  discounted  cash  flow  projections  based  on  the  Corporation’s  long-
range forecasts. The valuations used are subject to measurement uncertainty based on assumptions and inputs to the 
Corporation’s long-range forecast, including changes to fuel costs, operating costs, capital expenditures, external power 
prices and useful lives of the assets extending to the last planned asset retirement in 2073.

2020
Sundance Unit 3
In the third quarter of 2020, the Corporation recognized an impairment charge on Sundance Unit 3 in the amount of $70 
million in the Alberta Thermal segment due to the Corporation's decision to retire the unit. Previously, the Corporation 
had  expected  Sundance  Unit  3  to  remain  mothballed  until  November  2021.  As  there  were  no  estimated  future  cash 
flows from power generation expected to be derived from the unit, the unit was removed from the Alberta merchant 
CGU and immediately written down to the recoverable value of the scrap materials.  

BC Hydro Facility
In  the  third  quarter  of  2020,  the  Corporation  recorded  an  impairment  of  $2  million  in  the  Hydro  segment,  due  to  a  
review of water resources that resulted in a revision to the forecasted production at a BC hydro facility. The impairment 
assessment  was  based  on  fair  value  less  costs  of  disposal  using  discounted  cash  flow  projections  based  on  the 
Corporation's  long-range  forecasts.  The  resulting  fair  value  measurement  is  categorized  as  a  Level  III  fair  value 
measurement. The key assumptions impacting the determination of fair value are electricity production and sales prices, 
which are subject to measurement uncertainty. 

Centralia Land
In the fourth quarter of 2020, the Corporation recognized an impairment of $9 million (US$7 million) in the Centralia 
segment due to a decrease in the fair value of the land determined through a third-party appraiser. In addition to the 
asset impairments noted above, a net asset impairment of $3 million was recognized for changes in the decommissioning 
and  restoration  liabilities  related  to  the  Centralia  mine  and  Sundance  Unit  1,  which  are  no  longer  operating  and  have 
reached the end of their useful lives. 

2019
Centralia Thermal Facility
In 2012, the Corporation recorded an impairment of $347 million relating to the Centralia thermal facility CGU. As part 
of  the  annual  impairment  test,  the  Corporation  considers  possible  indicators  of  impairment  at  the  Centralia  thermal 
facility CGU. In 2019, an internal valuation indicated the fair value less costs of disposal of the Centralia thermal facility 
CGU  exceeded  the  carrying  value,  resulting  in  a  full  recoverability  test  in  2019.  The  updated  fair  value  included 
sustained  changes  in  the  power  price  market  and  cost  of  coal  due  to  contract  renegotiations.  As  a  result  of  the 
recoverability test an impairment reversal of $151 million was recorded in the Centralia segment.  

The valuations are categorized as Level III fair value measurements and subject to measurement uncertainty based on 
the key assumptions outlined below, and on inputs to the Corporation’s long-range forecast, including changes to fuel 
costs, operating costs, capital expenses and the level of contractedness under the Memorandum of Agreement ("MOA") 
for  coal  transition  established  with  the  State  of  Washington.  The  valuation  period  includes  cash  flows  until  the 
decommissioning of the facility in 2025. 

The  Corporation  utilized  the  Corporation's  long-range  forecast  and  the  following  key  assumptions  in  2019  compared 
with 2016 assumptions, which was the most recent detailed valuation: 

Mid-Columbia annual average power prices

US$30 to US$42 per MWh

US$22 to US$46 per MWh

On-highway diesel fuel on coal shipments

US$2.35 to US$2.40 per gallon

US$1.69 to US$2.09 per gallon

Discount rates

5.2 to 6.4 per cent

5.4 to 5.7 per cent

2019

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

During 2019, the Corporation adjusted the Centralia mine decommissioning and restoration provision as management 
no longer believes that the fine coal recovery and reclamation work will occur as originally proposed. The Corporation's 
current best estimate of the decommissioning and restoration provision increased by $141 million. Since the Centralia 
mine  is  no  longer  operating  and  reached  the  end  of  its  useful  life  in  2006,  this  adjustment  results  in  the  immediate 
recognition of the full $141 million through asset impairment charges in net earnings. Please refer to Note 3 and 23 of 
the consolidated financial statements for further details. 

Assets Held for Sale
In the fourth quarter of 2019, the Corporation identified several trucks and associated inventory to be sold within the 
Alberta  Thermal  segment  and  accordingly  wrote  the  assets  down  to  net  realizable  value,  resulting  in  an  impairment 
charge of $15 million. 

2018 
Sundance Unit 2
In the third quarter of 2018, the Corporation recognized an impairment charge on Sundance Unit 2 in the amount of $38 
million due to the Corporation’s decision to retire Sundance Unit 2. Previously, the Corporation had expected Sundance 
Unit 2 to remain mothballed for a period of up to two years and therefore remain within the Alberta Merchant CGU. The 
impairment assessment was based on value in use and included the estimated future cash flows expected to be derived 
from the unit until its retirement on July 31, 2018. Discounting did not have a material impact.

Lakeswind and Kent Breeze
On  May  31,  2018,  TransAlta  Renewables  acquired  an  economic  interest  in  Lakeswind  through  the  subscription  of 
tracking preferred shares of a subsidiary of the Corporation and also purchased Kent Breeze. In connection with these 
acquisitions, the assets were fair valued using discount rates that average approximately seven per cent. Accordingly, 
the Corporation has recorded an impairment charge of $12 million using the valuation in the agreement as the indicator 
of fair value less cost of disposal in 2018. The impairment charge had an $11 million impact on PP&E and a $1 million 
impact on intangible assets.

Project Development Costs
During 2020, the Corporation wrote off nil (2019 - $18 million) in project development costs related to projects that are 
no longer proceeding.  

Disclosure  is  required  of  all  unconsolidated  structured  entities  or  arrangements  such  as  transactions,  agreements  or 
contractual arrangements with unconsolidated entities, structured finance entities, special purpose entities or variable 
Unconsolidated Structured Entities or Arrangements
interest entities that are reasonably likely to materially affect liquidity or the availability of, or requirements for, capital 
resources. We currently have no such unconsolidated structured entities or arrangements.

We  have  obligations  to  issue  letters  of  credit  and  cash  collateral  to  secure  potential  liabilities  to  certain  parties, 
including  those  related  to  potential  environmental  obligations,  commodity  risk  management  and  hedging  activities, 
Guarantee Contracts
pension plan obligations, construction projects and purchase obligations. At Dec. 31, 2020, we provided letters of credit 
totalling $621 million (2019 - $690 million) and cash collateral of $49 million (2019 - $42 million). These letters of credit 
and  cash  collateral  secure  certain  amounts  included  on  our  Consolidated  Statements  of  Financial  Position  under  risk 
management  liabilities,  defined  benefit  obligation  and  other  long-term  liabilities,  and  decommissioning  and  other 
provisions.

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Contractual commitments are as follows: 
Commitments

2021

2022

2023

2024

2025

2026 and 
thereafter

Total

Natural gas, transportation and other contracts

141 

134 

134 

1,353 

2,048 

Transmission

Coal supply and mining agreements

Long-term service agreements
Operating leases(1)
Long-term debt(2)
Exchangeable securities(3)
Principal payments on lease liabilities(4)

Interest on long-term debt and lease liabilities(5,6)
Interest on exchangeable securities(3,6)
Growth

TransAlta Energy Transition Bill

Total

149 

8 

105 

37 

2 

626 

— 

6 

153 

52 

411 

6 

8 

81 

31 

4 

96 

— 

(5)   

161 

53 

509 

6 

137 

8 

101 

22 

2 

277 

— 

5 

5 

67 

18 

1 

119 

— 

5 

126 

119 

53 

93 

6 

52 

— 

— 

5 

56 

10 

1 

136 

750 

5 

113 

— 

— 

— 

1 

— 

55 

26 

35 

410 

173 

36 

2,010 

3,264 

— 

118 

893 

— 

— 

— 

750 

134 

1,565 

210 

1,013 

18 

1,085 

1,555 

830 

520 

1,210 

4,456 

9,656 

(1) Includes leases that have not yet commenced. 
(2) Excludes impact of hedge accounting and derivatives.
(3) Assumes the exchangeable securities will be exchanged by Brookfield on Jan. 1, 2025. Please refer to the Significant and Subsequent Events section of this MD&A 
for further details. 
(4) Lease liabilities include a lease incentive of $13 million, expected to be received in 2021.
(5) Interest on long-term debt is based on debt currently in place with no assumption as to refinancing on maturity.
(6) Not recognized as a financial liability on the Consolidated Statements of Financial Position.

As part of the TransAlta Energy Transition Bill signed into law in the State of Washington and the subsequent MoA, we 
have  committed  to  fund  US$55  million  in  total  over  the  remaining  life  of  the  Centralia  thermal  facility  to  support 
economic  and  community  development,  promote  energy  efficiency  and  develop  energy  technologies  related  to  the 
improvement  of  the  environment.  The  MoA  contains  certain  provisions  for  termination  and  in  the  event  of  the 
termination and certain circumstances, this funding or part thereof would no longer be required. At Dec. 31, 2020, the 
Corporation has funded approximately US$41 million of the commitment. 

Line Loss Rule Proceeding 
The Corporation has been participating in a line loss rule proceeding before the AUC. The AUC determined that it has 
Contingencies 
the ability to retroactively adjust line loss charges going back to 2006 and directed AESO to recalculate loss factors for 
2006 to 2016 and issue a single invoice charging or crediting market participants for the difference in losses charges. 
The AESO submitted a review and variance application of this decision to implement a “pay-as-you-go” invoicing scheme 
rather  than  issue  a  single  invoice.  The  AUC  ruled  on  AESO’s  request  and  approved  a  three-period  invoice  process 
(2006-2009,  2010-2013  and  2014-2016).  The  total  liability  for  the  loss  charges  was  $25  million;  however,  due  to 
payments made (and received) for the first two invoices, only $8 million of the total liability remains outstanding. The 
AESO issued the first invoice on Oct. 22, 2020, for $6 million, which was paid by Dec. 30, 2020. The second invoice was 
issued on Dec. 21, 2020, for $11 million. The third invoice is expected in March 2021.

In November 2020, AESO sought direction from the AUC with respect to interest payments on the loss charges, and the 
AUC ruled in January 2021 that simple interest (rather than compound interest) would apply to the loss charges.

FMG Disputes
The  Corporation  is  currently  engaged  in  a  dispute  with  Fortescue  Metals  Group  Ltd.  ("FMG")  as  a  result  of  FMG's 
purported termination of the South Hedland PPA. TransAlta sued FMG, seeking payments of amounts invoiced and not 
paid under the South Hedland PPA, as well as a declaration that the PPA is valid and in force. FMG, on the other hand, 
seeks  a  declaration  that  the  PPA  was  lawfully  terminated.  This  matter  has  been  rescheduled  to  proceed  to  trial 
beginning May 3, 2021, instead of June 15, 2020.

The Corporation had a second dispute involving FMG's claims against TransAlta related to the transfer of the Solomon 
facility  to  FMG.  FMG  claimed  certain  amounts  related  to  the  condition  of  the  facility  while  TransAlta  claimed  certain 
outstanding  costs  that  should  be  reimbursed.  The  dispute  was  settled  and  discontinued  in  the  Supreme  Court  of 
Western Australia on Sept. 9, 2020. 

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Mangrove Claim
On April 23, 2019, Mangrove commenced an action in the Ontario Superior Court of Justice, naming the Corporation, 
the  incumbent  members  of  the  Board  of  Directors  of  the  Corporation  on  such  date  and  Brookfield  BRP  Holdings 
(Canada),  as  defendants.  Mangrove  is  seeking  to  set  aside  the  Brookfield  Investment.  TransAlta  believes  the  claim  is 
wholly lacking in merit and is taking all steps to defend against the allegations. This matter has been rescheduled and the 
three-week trial will begin on April 19, 2021. 

Keephills 1 Stator Force Majeure Appeal
The  Balancing  Pool  and  ENMAX  Energy  Corporation  ("ENMAX")  are  seeking  to  set  aside  an  arbitration  award  on  the 
basis  that  they  did  not  receive  a  fair  hearing.  The  Alberta  Court  of  Queen’s  Bench  ("ABQB")  dismissed  the  Balancing 
Pool and ENMAX’s allegations of unfairness on June 26, 2019. The Balancing Pool and ENMAX, however, sought leave 
to appeal the ABQB’s decision at the Court of Appeal, which was granted on Feb. 13, 2020. The appeal is scheduled to be 
heard on April 8, 2021. TransAlta believes that the Court of Appeal will affirm the ABQB decision that the arbitration 
proceeding was fair.

Keephills 1 Superheater Force Majeure
Keephills  Unit  1  was  taken  offline  March  17,  2015  to  May  17,  2015  as  a  result  of  a  large  leak  in  the  secondary 
superheater. TransAlta Generation Partnership claimed force majeure under the Keephills PPA. ENMAX, the PPA buyer 
under the PPA at the time, did not dispute the force majeure but the Balancing Pool did, seeking to recover $12 million 
in capacity payment charges it paid to TransAlta while the unit was offline. The Balancing Pool argued and won in the 
Courts  that  it  has  a  right  under  the  PPA  to  commence  an  arbitration,  independent  of  the  PPA  buyer,  ENMAX.  An 
arbitration for this dispute has commenced and is set to be heard for seven days starting Dec. 6, 2021. 

Sundance A Decommissioning
TransAlta filed an application with the AUC seeking payment from the Balancing Pool for TransAlta’s decommissioning 
costs  for  Sundance  A,  including  its  proportionate  share  of  the  Highvale  mine.  The  Balancing  Pool  and  the  Utilities 
Consumer Advocate are participating as interveners because they take issue with the decommissioning costs claimed by 
TransAlta.  Due  to  various  factors,  including  the  COVID-19  pandemic  and  significant  information  requests  from  the 
Balancing  Pool,  the  application  has  been  delayed.  While  a  hearing  date  has  not  been  set,  the  application  will  likely  be 
heard in late 2021 or early 2022. TransAlta expects to receive payment from the Balancing Pool for its decommissioning 
costs; however, the amount that the AUC will award is uncertain.

Hydro Power Purchase Arrangement ("Hydro PPA") Emission Performance Credits Credits
The Balancing Pool claims to be entitled to emission performance credits ("EPCs"), valued at approximately $17 million 
per  year,  earned  by  the  Hydro  facilities  under  the  Carbon  Competitiveness  Incentive  Regulation  from  2018-2020.  The 
dispute is based on the ownership of the EPCs as a result of a change-in-law provision under the Hydro PPA and that 
TransAlta is benefiting from the purported change in law. TransAlta has not received any benefit from the EPCs and has 
not recognized any benefit from the EPCs within its financial statements. TransAlta believes that the Balancing Pool has 
no  rights  to  these  credits.  An  arbitration  has  commenced  and  will  be  likely  set  down  for  a  hearing  sometime  in  early 
2022. 

Direct Assigned Capital Deferral Account ("DACDA") Application
AltaLink Management Ltd. ("AltaLink") filed an application before the AUC to recover its 2016-2018 DACDA costs (the 
"Proceeding") incurred for the 240 kV line upgrades project in the Edmonton region (the “Upgrades Project”). TransAlta 
is a secondary applicant in the Proceeding because it owns a portion of the 1043L Line located on Enoch Cree Nation 
(“ECN”) Reserve that was part of the Upgrades Project. AltaLink and TransAlta sought to have their costs ($91 million 
for  AltaLink  and  $22  million  for  TransAlta)  approved  by  the  AUC  as  reasonable  and  prudent.  The  ECN  and  the 
Consumers  Coalition  of  Alberta  are  registered  participants  in  the  Proceeding.  The  AUC  rendered  its  decision  in  the 
Proceeding on Dec. 10, 2020, and disallowed 15 per cent (approximately $3 million) of TransAlta’s portion. TransAlta 
believes  that  the  AUC  made  errors  by  disallowing  15  per  cent  of  its  costs  and  therefore  filed  a  permission  to  appeal 
application with the Court of Appeal (the “PTA”) and a review and variance application with the AUC (the “R&V”). The 
PTA will be adjourned until the R&V process is completed.

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

The selection and application of accounting policies is an important process that has developed as our business activities 
have evolved and as accounting rules and guidance have changed. Accounting rules generally do not involve a selection 
Critical Accounting Policies and Estimates
among alternatives, but involve an implementation and interpretation of existing rules and the use of judgment relative 
to the circumstances existing in the business. Every effort is made to comply with all applicable rules on or before the 
effective date, and we believe the proper implementation and consistent application of accounting rules is critical.

However, not all situations are specifically addressed in the accounting literature. In these cases, our best judgment is 
used to adopt a policy for accounting for these situations. We draw analogies to similar situations and the accounting 
guidelines governing them, consider foreign accounting standards and consult with our independent auditors about the 
appropriate  interpretation  and  application  of  these  policies.  Each  of  the  critical  accounting  policies  involves  complex 
situations  and  a  high  degree  of  judgment  either  in  the  application  and  interpretation  of  existing  literature  or  in  the 
development of estimates that impact our consolidated financial statements.

Our significant accounting policies are described in Note 2 of the consolidated financial statements. The most critical of 
these  policies  are  those  related  to  revenue  recognition,  financial  instruments,  valuation  of  PP&E  and  associated 
contracts, project development costs, useful life of PP&E, valuation of goodwill, leases, income taxes, employee future 
benefits, decommissioning and restoration provisions, other provisions and joint arrangements. Each policy involves a 
number  of  estimates  and  assumptions  to  be  made  about  matters  that  are  uncertain  at  the  time  the  estimate  is  made. 
Different estimates, with respect to key variables used for the calculations, or changes to estimates, could potentially 
have a material impact on our financial position or results of operations.

We  have  discussed  the  development  and  selection  of  these  critical  accounting  estimates  with  our  Audit,  Finance  and 
Risk Committee ("AFRC") and our independent auditors. The AFRC has reviewed and approved our disclosure relating 
to critical accounting estimates in this MD&A. These critical accounting estimates are described as follows:

Revenue from Contracts with Customers
Revenue Recognition
The majority of our revenues from contracts with customers are derived from the sale of generation capacity, electricity, 
thermal energy, environmental attributes and byproducts of power generation. The Corporation evaluates whether the 
contracts  it  enters  into  meet  the  definition  of  a  contract  with  a  customer  at  the  inception  of  the  contract  and  on  an 
ongoing basis if there is an indication of significant changes in facts and circumstances. Revenue is measured based on 
the transaction price specified in a contract with a customer. Revenue is recognized when control of the good or services 
is transferred to the customer. For certain contracts, revenue may be recognized at the invoiced amount, as permitted 
using the invoice practical expedient, if such amount corresponds directly with the Corporation’s performance to date. 
The Corporation excludes amounts collected on behalf of third parties from revenue.

Identification of Performance Obligations
Each promised good or service is accounted for separately as a performance obligation if it is distinct. The Corporation’s 
contracts may contain more than one performance obligation. Where contracts contain multiple promises for goods or 
services,  management  exercises  judgment  in  determining  whether  goods  or  services  constitute  distinct  goods  or 
services  or  a  series  of  distinct  goods  or  services  that  are  substantially  the  same  and  that  have  the  same  pattern  of 
transfer  to  the  customer.  The  determination  of  a  performance  obligation  affects  whether  the  transaction  price  is 
recognized at a point in time or over time. Management considers both the mechanics of the contract and the economic 
and operating environment of the contract in determining whether the goods or services in a contract are distinct. 

Transaction Price
The  Corporation  allocates  the  transaction  price  in  the  contract  to  each  performance  obligation.  Transaction  price 
allocated  to  performance  obligations  may  include  variable  consideration.  Variable  consideration  is  included  in  the 
transaction price for each performance obligation when it is highly probable that a significant reversal of the cumulative 
variable revenue will not occur. Variable consideration is assessed at each reporting period to determine whether the 
constraint  is  lifted.  The  consideration  contained  in  some  of  the  Corporation's  contracts  with  customers  is  primarily 
variable,  and  may  include  both  variability  in  quantity  and  pricing,  such  as:  revenues  can  be  dependent  upon  future 
production volumes that are driven by customer or market demand or by the operational ability of the facility; revenues 
can be dependent upon the variable cost of producing the energy; revenues can be dependent upon market prices; and 
revenues can be subject to various indices and escalators. 

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

In  determining  the  transaction  price  and  estimates  of  variable  consideration,  management  considers  past  history  of 
customer usage and capacity requirements when estimating the goods and services to be provided to the customer. The 
Corporation also considers the historical production levels and operating conditions for its variable generating assets. 

Allocation of Transaction Price to Performance Obligations
When  multiple  performance  obligations  are  present  in  a  contract,  transaction  price  is  allocated  to  each  performance 
obligation  in  an  amount  that  depicts  the  consideration  the  Corporation  expects  to  be  entitled  to  in  exchange  for 
transferring the good or service. 

The  Corporation’s  contracts  generally  outline  a  specific  amount  to  be  invoiced  to  a  customer  associated  with  each 
performance obligation in the contract. Where contracts do not specify amounts for individual performance obligations, 
the Corporation estimates the amount of the transaction price to allocate to individual performance obligations based 
on their standalone selling price, which is primarily estimated based on the amounts that would be charged to customers 
under similar market conditions. 

Satisfaction of Performance Obligations
The satisfaction of performance obligations requires management to use judgment as to when control of the underlying 
good or service transfers to the customer. Determining when a performance obligation is satisfied affects the timing of 
revenue recognition. Management considers both customer acceptance of the good or service, and the impact of laws 
and regulations such as certification requirements, in determining when this transfer occurs. Management also applies 
judgment  in  determining  whether  the  invoice  practical  expedient  permits  recognition  of  revenue  at  the  invoiced 
amount, if that invoiced amount corresponds directly with the entity's performance to date.

The Corporation recognizes a significant financing component where the timing of payment from the customer differs 
from  the  Corporation’s  performance  under  the  contract  and  where  that  difference  is  the  result  of  the  Corporation 
financing the transfer of goods and services.

Revenue from Other Sources 
Lease Revenue
In certain situations, a long-term electricity or thermal sales contract may contain, or be considered, a lease. Revenues 
associated with non-lease elements are recognized as goods or services revenues as outlined above. Where the terms 
and  conditions  of  the  contract  result  in  the  customer  assuming  the  principal  risks  and  rewards  of  ownership  of  the 
underlying asset, the contractual arrangement is considered a finance lease, which results in the recognition of finance 
lease income. Where we retain the principal risks and rewards, the contractual arrangement is an operating lease. Rental 
income, including contingent rents where applicable, is recognized over the term of the contract. 

Revenue from Derivatives
Commodity risk management activities involve the use of derivatives such as physical and financial swaps, forward sales 
contracts,  futures  contracts  and  options  that  are  used  to  earn  revenues  and  to  gain  market  information.  These 
derivatives are accounted for using fair value accounting. The initial recognition and subsequent changes in fair value 
affect reported net earnings in the period the change occurs and are presented on a net basis in revenue. The fair values 
of  instruments  that  remain  open  at  the  end  of  the  reporting  period  represent  unrealized  gains  or  losses  and  are 
presented on the Consolidated Statements of Financial Position as risk management assets or liabilities. 

The determination of the fair value of commodity risk management contracts and derivative instruments is complex and 
relies on judgments concerning future prices, volatility and liquidity, among other factors. Some of our derivatives are 
not  traded  on  an  active  exchange  or  extend  beyond  the  time  period  for  which  exchange-based  quotes  are  available, 
requiring us to use internal valuation techniques or models described below.

The fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a liability in 
Financial Instruments
an  orderly  transaction  between  market  participants  at  the  measurement  date.  Fair  values  can  be  determined  by 
reference to prices for instruments in active markets to which we have access. In the absence of an active market, we 
determine fair values based on valuation models or by reference to other similar products in active markets.

Fair  values  determined  using  valuation  models  require  the  use  of  assumptions.  In  determining  those  assumptions,  we 
look primarily to external readily observable market inputs. However, if not available, we use inputs that are not based 
on observable market data.

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Level Determinations and Classifications
The  Level  I,  II  and  III  classifications  in  the  fair  value  hierarchy  utilized  by  the  Corporation  are  defined  below.  The  fair 
value  measurement  of  a  financial  instrument  is  included  in  only  one  of  the  three  levels,  the  determination  of  which  is 
based on the lowest level input that is significant to the derivation of the fair value.

Level I
Fair  values  are  determined  using  inputs  that  are  quoted  prices  (unadjusted)  in  active  markets  for  identical  assets  or 
liabilities that we have the ability to access at the measurement date. In determining Level I fair values, we use quoted 
prices for identically traded commodities obtained from active exchanges such as the New York Mercantile Exchange.

Level II
Fair values are determined, directly or indirectly, using inputs that are observable for the asset or liability.

Fair values falling within the Level II category are determined through the use of quoted prices in active markets, which 
in  some  cases  are  adjusted  for  factors  specific  to  the  asset  or  liability,  such  as  basis,  credit  valuation  and  location 
differentials. Our commodity risk management Level II financial instruments include over-the-counter derivatives with 
values based on observable commodity futures curves and derivatives with inputs validated by broker quotes or other 
publicly  available  market  data  providers.  Level  II  fair  values  are  also  determined  using  valuation  techniques,  such  as 
option pricing models and interpolation formulas, where the inputs are readily observable.

In determining Level II fair values of other risk management assets and liabilities, we use observable inputs other than 
unadjusted quoted prices that are observable for the asset or liability, such as interest rate yield curves and currency 
rates.  For  certain  financial  instruments  where  insufficient  trading  volume  or  lack  of  recent  trades  exists,  we  rely  on 
similar interest or currency rate inputs and other third-party information such as credit spreads.

Level III
Fair values are determined using inputs for the asset or liability that are not readily observable.

We may enter into commodity transactions for which market-observable data is not available. In these cases, Level III 
fair values are determined using valuation techniques such as mark-to-forecast and mark-to-model. For mark-to-model 
valuations, derivative pricing models, regression-based models and historical bootstrap models may be employed. The 
model  inputs  may  be  based  on  historical  data  such  as  unit  availability,  transmission  congestion,  demand  profiles  for 
individual  non-standard  deals  and  structured  products,  and/or  volatilities  and  correlations  between  products  derived 
from  historical  price  relationships.  We  also  have  various  contracts  with  terms  that  extend  beyond  a  liquid  trading 
period. As forward market prices are not available for the full period of these contracts, the value of these contracts is 
derived  by  reference  to  a  forecast  that  is  based  on  a  combination  of  external  and  internal  fundamental  modelling, 
including discounting. As a result, these contracts are classified in Level III.

Our Commodity Exposure Management Policy governs both the commodity transactions undertaken in our proprietary 
trading  business  and  those  undertaken  to  manage  commodity  price  exposures  in  our  generation  business.  This  Policy 
defines and specifies the controls and management responsibilities associated with commodity trading activities, as well 
as the nature and frequency of required reporting of such activities.

Methodologies  and  procedures  regarding  commodity  risk  management  Level  III  fair  value  measurements  are 
determined  by  our  risk  management  department.  Level  III  fair  values  are  calculated  within  our  energy  trading  risk 
management  system  based  on  underlying  contractual  data  as  well  as  observable  and  non-observable  inputs. 
Development of non-observable inputs requires the use of judgment. To ensure reasonability, system-generated Level 
III  fair  value  measurements  are  reviewed  and  validated  by  the  risk  management  and  finance  departments.  Review 
occurs formally on a quarterly basis or more frequently if daily review and monitoring procedures identify unexpected 
changes to fair value or changes to key parameters.

The effect of using reasonably possible alternative assumptions as inputs to valuation techniques for contracts included 
in the Level III fair value measurements at Dec. 31, 2020, is an estimated total upside of $68 million (2019 - $79 million 
upside) and total downside of $94 million (2019 - $172 million) impact to the carrying value of the financial instruments. 
Fair values are stressed for volumes and prices. The amount of $35 million upside (2019 - $46 million upside) and $59 
million downside (2019 - $139 million downside) in the stress values stems from a long-dated power sale contract in the 
Pacific Northwest that is designated as a cash flow hedge utilizing assumed power prices ranging from US$24 to US$32/
MWh  (Dec.  31,  2019  -  US$20-US$28/MWh)  for  the  period  beyond  the  liquid  period,  while  the  remaining  amounts 
account  for  the  rest  of  the  portfolio.  The  variable  volumes  are  stressed  up  and  down  one  standard  deviation  from 

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

historically available production data. Prices are stressed for longer-term deals where there are no liquid market quotes 
using various internal and external forecasting sources to establish a high and a low price range.

In addition to the Level III fair value measurements discussed above, the Brookfield Investment allows Brookfield the 
option to exchange all of the outstanding exchangeable securities into an equity ownership interest of up to a maximum 
of 49 per cent in an entity formed to hold TransAlta’s Alberta Hydro Assets after Dec. 31, 2024. The fair value of the 
option to exchange is considered a Level III fair value measurement, with an estimated downside of $33 million (2019 - 
$27  million  downside)  potential  impact  to  the  carrying  value  of  nil  as  at  Dec.  31,  2020  (2019  -  nil).  The  sensitivity 
analysis has been prepared using the Corporation’s assessment that a change in the implied discount rate of the future 
cash flow of one per cent is a reasonably possible change.

The Corporation’s inventory balance is comprised of coal and natural gas used as fuel, which is measured at the lower of 
weighted average cost and net realizable value. At the end of each reporting period, we assess whether our inventory 
Inventory
should be written down to its net realizable value as a result of reduced movement in inventory, lower commodity prices 
or other events and circumstances that might indicate the cost of the inventory is no longer recoverable. 

Determining the amount of the net realizable value requires significant judgment and can vary based on the estimates 
such as estimated production levels, consumption and sales prices.

At the end of each reporting period, we assess whether there is any indication that PP&E and finite life intangible assets 
Valuation of PP&E and Associated Contracts
are impaired or whether a previously recognized impairment may no longer exist or may have decreased. Impairment 
exists when the carrying amount of the asset or CGU to which it belongs exceeds its recoverable amount, which is the 
higher of fair value less costs of disposal and value in use.

Factors  that  could  indicate  that  an  impairment  exists  include:  significant  underperformance  relative  to  historical  or 
projected  operating  results;  significant  changes  in  the  manner  in  which  an  asset  is  used  or  in  our  overall  business 
strategy; or significant negative industry or economic trends. In some cases, these events are clear. However, in many 
cases,  a  clearly  identifiable  event  indicating  possible  impairment  does  not  occur.  Instead,  a  series  of  individually 
insignificant  events  occur  over  a  period  of  time  leading  to  an  indication  that  an  asset  may  be  impaired.  This  can  be 
further complicated in situations where we are not the operator of the facility. Events can occur in these situations that 
may not be known until a date subsequent to their occurrence.

Our  operations,  the  market  and  business  environment  are  routinely  monitored,  and  judgments  and  assessments  are 
made to determine whether an event has occurred that indicates a possible impairment. If such an event has occurred, 
an estimate is made of the recoverable amount of the asset or CGU to which the asset belongs. The recoverable amount 
is  the  higher  of  an  asset’s  fair  value  less  costs  of  disposal  and  its  value  in  use.  Fair  value  is  the  price  that  would  be 
received to sell an asset in an orderly transaction between market participants at the measurement date. In determining 
fair  value  less  costs  of  disposal,  information  about  third-party  transactions  for  similar  assets  is  used  and  if  none  is 
available,  other  valuation  techniques,  such  as  discounted  cash  flows,  are  used.  Value  in  use  is  computed  using  the 
present value of management’s best estimates of future cash flows based on the current use and present condition of 
the  asset.  In  estimating  either  fair  value  less  costs  of  disposal  or  value  in  use  using  discounted  cash  flow  methods, 
estimates  and  assumptions  must  be  made  about  sales  prices,  cost  of  sales,  production,  fuel  consumed,  capital 
expenditures, retirement costs and other related cash inflows and outflows over the life of the facilities, which can range 
from  30  to  60  years.  In  developing  these  assumptions,  management  uses  estimates  of  contracted  and  future  market 
prices based on expected market supply and demand in the region in which the facility operates, anticipated production 
levels,  planned  and  unplanned  outages,  changes  to  regulations  and  transmission  capacity  or  constraints  for  the 
remaining life of the facilities. 

Discount  rates  are  determined  by  employing  a  weighted  average  cost  of  capital  methodology  that  is  based  on  capital 
structure, cost of equity and cost of debt assumptions based on comparable companies with similar risk characteristics 
and  market  data  as  the  asset,  CGU  or  group  of  CGUs  subject  to  the  test.  These  estimates  and  assumptions  are 
susceptible to change from period to period and actual results can, and often do, differ from the estimates, and can have 
either a positive or negative impact on the estimate of the impairment charge, and may be material.

The impairment outcome can also be impacted by the determination of CGUs or groups of CGUs for asset and goodwill 
impairment  testing.  A  CGU  is  the  smallest  identifiable  group  of  assets  that  generates  cash  inflows  that  are  largely 
independent of the cash inflows from other assets or groups of assets, and goodwill is allocated to each CGU or group of 
CGUs that is expected to benefit from the synergies of the acquisition from which the goodwill arose. The allocation of 

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Management’s Discussion and Analysis

goodwill is reassessed upon changes in the composition of segments, CGUs or groups of CGUs. In respect of determining 
CGUs, significant judgment is required to determine what constitutes independent cash flows between power facilities 
that are connected to the same system. We  evaluate  the  market design, transmission constraints and the contractual 
profile  of  each  facility,  as  well  as  our  commodity  price  risk  management  plans  and  practices,  in  order  to  inform  this 
determination.  With  regard  to  the  allocation  or  reallocation  of  goodwill,  significant  judgment  is  required  to  evaluate 
synergies  and  their  impacts.  Minimum  thresholds  also  exist  with  respect  to  segmentation  and  internal  monitoring 
activities.  We  evaluate  synergies  with  regard  to  opportunities  from  combined  talent  and  technology,  functional 
organization and future growth potential, and we consider our own performance measurement processes in making this 
determination. No changes arose in our CGUs in 2020. 

Impairment  charges  can  be  reversed  in  future  periods  if  circumstances  improve.  No  assurances  can  be  given  if  any 
reversal  will  occur  or  the  amount  or  timing  of  any  such  reversal.  As  a  result  of  our  review  in 2020  and  other  specific 
events, various analyses were completed to assess the significance of possible impairment indicators. Please refer to the 
Other Consolidated Analysis section of this MD&A for further details.

Project  development  costs  include  external,  direct  and  incremental  costs  that  are  necessary  for  completing  an 
Project Development Costs
acquisition or construction project. These costs are recognized in operating expenses until construction of a facility or 
acquisition  of  an  investment  is  likely  to  occur,  there  is  reason  to  believe  that  future  costs  are  recoverable,  and  that 
efforts  will  result  in  future  value  to  us,  at  which  time  the  costs  incurred  subsequently  are  included  in  PP&E  or  other 
assets. The appropriateness of capitalization of these costs is evaluated each reporting period, and amounts capitalized 
for projects no longer probable of occurring are charged to net earnings.

Each significant component of an item of PP&E is depreciated over its estimated useful life. A component is a tangible 
Useful Life of PP&E
asset  that  can  be  separately  identified  as  an  asset  and  is  expected  to  provide  a  benefit  of  greater  than  one  year. 
Estimated  useful  lives  are  determined  based  on  current  facts  and  past  experience,  and  take  into  consideration  the 
anticipated physical life of the asset, existing long-term sales agreements and contracts, current and forecasted demand, 
the potential for technological obsolescence and regulations. The useful lives of PP&E and depreciation rates used are 
reviewed at least annually to ensure they continue to be appropriate.

In  2020,  total  depreciation  and  amortization  expense  was $798  million  (2019  -  $709  million;  2018  -  $710  million),  of 
which $144 million (2019 - $119 million; 2018 - $136 million) relates to mining equipment and is included in fuel, carbon 
compliance and purchased power.

As  a  result  of  the  Clean  Energy  Investment  Plan  described  in  the  Corporate  Strategy  section  of  this  MD&A,  we  will 
convert  our  existing  Alberta  coal  assets  to  natural  gas  and  therefore  the  useful  lives  of  the  PP&E  and  amortizable 
intangibles associated with some of our Alberta coal assets were updated to reflect these changes. For certain Wind and 
Solar PP&E we identified additional components for parts with shorter useful lives than originally estimated and revised 
the useful lives accordingly. See the Accounting Changes section of this MD&A for further details.

We  evaluate  goodwill  for  impairment  at  least  annually,  or  more  frequently  if  indicators  of  impairment  exist.  If  the 
Valuation of Goodwill
carrying amount of a CGU or group of CGUs, including goodwill, exceeds the unit’s fair value, the excess represents a 
goodwill impairment loss. 

For  purposes  of  the  2020,  2019  and  2018  annual  goodwill  impairment  reviews,  the  Corporation  determined  the 
recoverable  amounts  of  the  CGUs  by  calculating  the  fair  value  less  costs  of  disposal  using  discounted  cash  flow 
projections  based  on  the  Corporation’s  long-range  forecasts  for  the  period  extending  to  the  last  planned  asset 
retirement in 2073. The resulting fair value measurement is categorized within Level III of the fair value hierarchy.

We reviewed the carrying amount of goodwill prior to year-end and determined that the fair values of the related CGUs 
or groups of CGUs to which goodwill relates, based on estimates of future cash flows, exceeded their carrying amounts, 
and no goodwill impairments existed.

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Management’s Discussion and Analysis

Determining  the  fair  value  of  the  CGUs  or  group  of  CGUs  is  susceptible  to  changes  from  period  to  period  as 
management  is  required  to  make  assumptions  about  future  cash  flows,  production  and  trading  volumes,  margins,  and 
fuel  and  operating  costs.  No  reasonably  possible  change  in  the  assumptions  would  have  resulted  in  an  impairment  of 
goodwill.

In determining whether our contracts contain, or are, leases, management must use judgment in assessing whether the 
Leases
contract  provides  the  customer  with  the  right  to  substantially  all  of  the  economic  benefits  from  the  use  of  the  asset 
during the lease term and whether the customer obtains the right to direct the use of the asset during the lease term. 
For those agreements considered to contain, or be, leases, further judgment is required to determine the lease term by 
assessing whether termination or extension options are reasonably certain to be exercised. Judgment is also applied in 
identifying  in-substance  fixed  payments  (included)  and  variable  payments  that  are  based  on  usage  or  performance 
factors (excluded) and in identifying lease and non-lease components (services that the supplier performs) of contracts 
and in allocating contract payments to lease and non-lease components.

For  leases  where  we  are  a  lessor,  judgment  is  required  to  determine  if  substantially  all  of  the  significant  risks  and 
rewards of ownership are transferred to the customer or remain with us, to appropriately account for the agreement as 
either a finance or operating lease. These judgments can be significant and impact how we classify amounts related to 
the arrangement as either PP&E or as a finance lease receivable on the Consolidated Statements of Financial Position, 
and therefore the amount of certain items of revenue and expense are dependent upon such classifications.

In accordance with IFRS, we use the liability method of accounting for income taxes. Under the liability method, deferred 
Income Taxes
income tax assets and liabilities are recognized on the differences between the carrying amounts of assets and liabilities 
and their respective income tax basis (temporary differences). A deferred income tax asset may also be recognized for 
the benefit expected from unused tax credits and losses available for carryforward, to the extent that it is probable that 
future taxable earnings will be available against which the tax credits and losses can be applied. 

Preparation of the consolidated financial statements involves determining an estimate of, or provision for, income taxes 
in each of the jurisdictions in which we operate. The process also involves making an estimate of taxes currently payable 
and  income  taxes  expected  to  be  payable  or  recoverable  in  future  periods,  referred  to  as  deferred  income  taxes. 
Deferred income taxes result from the effects of temporary differences due to items that are treated differently for tax 
and accounting purposes. The tax effects of these differences are reflected in the Consolidated Statements of Financial 
Position as deferred income tax assets and liabilities. An assessment must also be made to determine the likelihood that 
our future taxable income will be sufficient to permit the recovery of deferred income tax assets. To the extent that such 
recovery is not probable, deferred income tax assets must be reduced. The reduction of the deferred income tax asset 
can be reversed if the estimated future taxable income improves. No assurances can be given if any reversal will occur or 
the  amount  or  timing  of  any  such  reversal.  Management  must  exercise  judgment  in  its  assessment  of  continually 
changing  tax  interpretations,  regulations,  and  legislation  to  ensure  deferred  income  tax  assets  and  liabilities  are 
complete  and  fairly  presented.  Differing  assessments  and  applications  than  our  estimates  could  materially  impact  the 
amount  recognized  for  deferred  income  tax  assets  and  liabilities.  Our  tax  filings  are  subject  to  audit  by  taxation 
authorities.  The  outcome  of  some  audits  may  change  our  tax  liability,  although  we  believe  that  we  have  adequately 
provided for income taxes in accordance with IFRS based on all information currently available. The outcome of pending 
audits is not known nor is the potential impact on the consolidated financial statements determinable.

A  net  deferred  income  tax  liability  of  $345  million  (2019  -  $454  million)  has  been  recorded  on  the  Consolidated 
Statements of Financial Position as at Dec. 31, 2020. This primarily relates to income tax deductions in excess of related 
depreciation  of  PP&E  of  $717  million  (2019  -  $828  million)  and  taxes  on  unrealized  gains  from  risk  management 
transactions  of  $107  million  (2019  -  $141  million),  partially  offset  by  temporary  differences  related  to  future 
decommissioning  and  restoration  costs  of $140  million  (2019  -  $122  million)  and  net  operating  loss  carryforwards  of 
$222 million (2019 - $252 million). We believe there will be sufficient taxable income that will permit the use of these 
loss carryforwards in the tax jurisdictions where they exist. Additional US tax losses are available for use for which no 
deferred income tax assets have been recognized.

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

We provide selected pension and other post-employment benefits to employees, such as health and dental benefits. The 
Employee Future Benefits
cost  of  providing  these  benefits  is  dependent  upon  many  factors,  including  actual  plan  experience  and  estimates  and 
assumptions about future experience.

The  liabilities  for  pension,  other  post-employment  benefits  and  associated  pension  costs  included  in  annual 
compensation  expenses  are  impacted  by  employee  demographics,  including  age,  compensation  levels,  employment 
periods, the level of contributions made to the plans and earnings on plan assets.

Changes  to  the  provisions  of  the  plans  may  also  affect  current  and  future  pension  costs.  Pension  costs  may  also  be 
significantly  impacted  by  changes  in  key  actuarial  assumptions,  including,  for  example,  the  discount  rates  used  in 
determining the defined benefit obligation and the net interest cost on the net defined benefit liability. The discount rate 
used to estimate our obligation reflects high-quality corporate fixed income securities currently available and expected 
to be available during the period to maturity of the pension benefits.

The  plan  assets  are  comprised  primarily  of  equity  and  fixed  income  investments.  Fluctuations  in  the  return  on  plan 
assets  as  a  result  of  actual  equity  market  returns  and  changes  in  interest  rates  may  result  in  increased  or  decreased 
pension costs in future periods.

We recognize decommissioning and restoration provisions for generating facilities and mine sites in the period in which 
Decommissioning and Restoration Provisions
they are incurred if there is a legal or constructive obligation to remove the facilities and restore the site. The amount 
recognized as a provision is the best estimate of the expenditures required to settle the provision. Expected values are 
probability weighted to deal with the risks and uncertainties inherent in the timing and amount of settlement of many 
decommissioning  and  restoration  provisions.  Expected  values  are  discounted  at  the  current  market-based  risk-free 
interest rate adjusted to reflect the market’s evaluation of our credit standing.

As  at  Dec.  31,  2020,  the  decommissioning  and  restoration  provisions  recorded  on  the  Consolidated  Statements  of 
Financial  Position  was  $608  million  (2019  -  $501  million).  During  2020,  the  Corporation  adjusted  the  Highvale  mine 
decommissioning and restoration provision to reflect the mine closure advancement, an updated mine plan and current 
mining  activity,  including  increased  volume  of  material  movement.  As  at  Dec.  31,  2020,  the  decommissioning  and 
restoration provision for Highvale mine was $153 million (2019 - $91 million) for reclamation work anticipated through 
2046. The majority of the reclamation work is expected to be complete by 2040. Please refer to the Accounting Changes 
section of this MD&A for further details. This increase was partially offset by a decrease in the Sarnia decommissioning 
and restoration provision as a result of an updated engineering study. In addition, due to volatility within the market as a 
result  of  COVID-19,  we  have  seen  movement  within  the  discount  rates  as  a  result  of  changes  in  credit  spreads.  As  a 
result, on average, these rates decreased by approximately 0.3 to 0.9 per cent. 

During  2019,  we  adjusted  the  Centralia  mine  decommissioning  and  restoration  provision  as  management  no  longer 
believes that the fine coal recovery and reclamation work will be completed as originally proposed. As at Dec. 31, 2020, 
the  decommissioning  and  restoration  provision  for  Centralia  mine  was  $174  million  (2019  -  $178  million)  for 
reclamation work anticipated through 2035. Please refer to the Accounting Changes section of this MD&A for further 
details. In addition, as a result of the changes in estimated useful lives, described in the Accounting Changes section, the 
discount  rates  used  for  the  Alberta  Thermal  and  mining  operations  decommissioning  provisions  were  changed  due  to 
the change in useful life. 

We estimate the undiscounted amount of cash flow required to settle the decommissioning and restoration provisions is 
approximately $1.4 billion, which will be incurred between 2021 and 2073. The majority of these costs will be incurred 
between 2025 and 2050. 

Sensitivities for the major assumptions are as follows:

Factor

Discount rate

Undiscounted decommissioning and restoration provision

Increase or
decrease (%)

Approximate impact
on net earnings

1 

10 

6 

3 

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Where  necessary,  we  recognize  provisions  arising  from  ongoing  business  activities,  such  as  interpretation  and 
Other Provisions
application  of  contract  terms,  ongoing  litigation  and  force  majeure  claims.  These  provisions,  and  subsequent  changes 
thereto,  are  determined  using  our  best  estimate  of  the  outcome  of  the  underlying  event  and  can  also  be  impacted  by 
determinations made by third parties, in compliance with contractual requirements. The actual amount of the provisions 
that may be required could differ materially from the amount recognized.

During the fourth quarter of 2020, an onerous contract provision of $29 million was recognized as a result of a decision 
to  accelerate  the  plans  to  eliminate  coal  as  a  fuel  source  at  the  Sheerness  facility  by  the  end  of  2021.  The  last  coal 
shipment is expected to be received during the first quarter of 2021, while payments required under the contract will 
continue until 2025.

Upon entering into a joint arrangement, the Corporation must classify it as either a joint operation or joint venture, and 
the  classification  affects  the  accounting  for  the  joint  arrangement.  In  making  this  classification,  the  Corporation 
Classification of Joint Arrangements
exercises judgment in evaluating the terms and conditions of the arrangement to determine whether the parties have 
rights  to  the  assets  and  obligations  or  rights  to  the  net  assets.  Factors  such  as  the  legal  structure,  contractual 
arrangements  and  other  facts  and  circumstances,  such  as  where  the  purpose  of  the  arrangement  is  primarily  for  the 
provision  of  the  output  to  the  parties  and  when  the  parties  are  substantially  the  only  source  of  cash  flows  for  the 
arrangement, must be evaluated to understand the rights of the parties to the arrangement.

Accounting Changes
I. Amendments to IAS 1 and IAS 8 Definition of Material
Current Accounting Changes
The  Corporation  adopted  the  amendments  to  IAS  1  and  IAS  8  as  of  Jan.  1,  2020.  The  amendments  provide  a  new 
definition  of  material  that  states  “information  is  material  if  omitting,  misstating  or  obscuring  it  could  reasonably  be 
expected  to  influence  decisions  that  the  primary  users  of  general  purpose  financial  statements  make  on  the  basis  of 
those financial statements, which provide financial information about a specific reporting entity.”

The amendments clarify that materiality will depend on the nature or magnitude of information, either individually or in 
combination  with  other  information,  in  the  context  of  the  financial  statements.  A  misstatement  of  information  is 
material if it could reasonably be expected to influence decisions made by the primary users. These amendments had no 
impact on the consolidated financial statements of, nor is there expected to be any future impact to, the Corporation.

II. Amendments to IFRS 7 and 9 Interest Rate Benchmark Reform
In September 2019, the IASB issued amendments to reporting standards relating to Interest Rate Benchmark Reform by 
amending IFRS 9, IAS 39 and IFRS 7. These amendments provide temporary relief during the period of uncertainty from 
applying specific hedge accounting requirements to hedging relationships directly affected by the ongoing interest rate 
benchmark  reforms.  These  amendments  are  mandatory  for  annual  periods  beginning  on  or  after  Jan.  1,  2020.  The 
Corporation  adopted  these  amendments  as  of  Jan.  1,  2020.  There  were  no  hedging  relationships  that  were  directly 
affected on Jan. 1, 2020.  

During the first quarter of 2020, the Corporation entered into cash flow hedges of interest rate risk associated with a 
future forecasted debt issuance using derivative instruments based on the London Interbank Offered Rate ("LIBOR"). As 
a temporary relief, provided by the IFRS 9 amendments, the Corporation has assumed that the LIBOR interest rate on 
which the cash flows of the interest rate swaps are based is not altered by interbank offered rates ("IBOR") reform when 
assessing if the hedge is highly effective. 

Note 2 and 3 of the consolidated financial statements include a more detailed discussion of our accounting policies.

Change in Estimates
Alberta Thermal
During  the  third  quarter  of  2020,  the  Board  approved  the  accelerated  shutdown  of  the  Highvale  mine  by  the  end  of 
2021 and accordingly the useful life of the related assets was adjusted to align with the Corporation's conversion to gas 
plans. As at Dec. 31, 2020, the carrying value of the Highvale mine, including PP&E, right-of-use assets and intangible 
assets, was $373 million.  

As a result of the Clean Energy Investment Plan described in the Corporate Strategy section of this MD&A, we adjusted 
the useful lives of certain coal assets, effective Sept. 1, 2019. Assets used only for coal-burning operations were adjusted 
to  shorten  their  useful  lives  whereas  other  asset  lives  were  extended  as  they  were  identified  as  being  used  after  the 

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Management’s Discussion and Analysis

conversion to gas or combined-cycle conversions. Due to the impact of shortening the lives of the coal assets, overall 
depreciation expense for the year ended Dec. 31, 2020, increased by approximately $15 million.

Wind and Solar
During 2019, we reviewed the allocation of the costs recognized for the components of the Wind and Solar PP&E and 
the  useful  lives  for  these  identified  components.  As  a  result  of  the  review,  additional  components  were  identified  for 
parts  where  the  useful  lives  are  shorter  than  the  original  estimate.  The  useful  life  of  each  of  these  components  was 
reduced  from  30  years  to  either  15  years  or  10  years.  Accordingly,  depreciation  expense  for  the  year  ended  Dec.  31, 
2019, increased by approximately $11 million.

Sheerness
In 2019, we adjusted the useful life of the Sheerness coal-fired facility assets to align with the dual-fuel conversion plans. 
As a result, the assets used for coal-burning operations as well as the other asset lives were extended and depreciation 
expense for the year ended Dec. 31, 2019, decreased by approximately $8 million. 

The useful lives may be revised or extended in compliance with the Corporation's accounting policies, dependent upon 
future operating decisions and events.

Sarnia
In the fourth quarter of 2020, the Corporation adjusted the Sarnia decommissioning and restoration provision to reflect  
an  updated  engineering  study.  The  Corporation's  current  best  estimate  of  the  decommissioning  and  restoration 
provision decreased by $15 million. This resulted in a decrease in the related assets in PP&E.

Highvale
In the third quarter of 2020, the Corporation adjusted the Highvale mine decommissioning and restoration provision to 
reflect the mine closure advancement, an updated mine plan and current mining activity, including increased volume of 
material  movement.  The  Corporation's  current  best  estimate  of  the  decommissioning  and  restoration  provision 
increased by $75 million. This resulted in an increase in the related assets in PP&E.

Centralia
In 2019, we adjusted the Centralia mine decommissioning and restoration provision as management no longer believes 
that the fine coal recovery and reclamation  work will  be completed  as  originally proposed. The Corporation's current 
best estimate of the decommissioning and restoration provision increased by $141 million. Since the Centralia mine is 
no longer operating and reached the end of its useful life in 2006, this adjustment results in the immediate recognition of 
the full $141 million, through asset impairment charges in net earnings. 

TransAlta  estimates  that  the  undiscounted  amount  of  cash  flow  required  to  settle  this  additional  obligation  is 
approximately $222 million, which will be incurred between 2021 and 2035. The provision may be revised in compliance 
with  the  Corporation's  accounting  policies,  dependent  upon  future  operating  decisions  and  as  more  information 
becomes available. 

For  further  details  and  changes  in  estimates  relating  to  prior  years,  please  refer  to  the  Other  Consolidated  Analysis 
section of this MD&A and Note 3 of the consolidated financial statements. 

Amendments to IAS 16 Property, Plant and Equipment: Proceeds before Intended Use
The Corporation plans to early adopt the Amendments to IAS 16 Property, Plant and Equipment: Proceeds before Intended 
Future Accounting Changes
Use on Jan. 1, 2021. The amendment has a mandatory effective date of Jan. 1, 2022. The amendments prohibit deducting 
from the cost of an item of PP&E any proceeds from selling items produced while bringing the asset to the location and 
condition  necessary  for  it  to  be  capable  of  operating.  No  adjustments  are  expected  from  early  adopting  the 
amendments.

IFRS 7 Financial Instruments - Disclosures - Interest Rate Benchmark Reform
The IASB issued Interest Rate Benchmark Reform - Phase 2 in August 2020, which amends IFRS 9 Financial Instruments, IAS 
39 Financial Instruments: Recognition and Measurement, IFRS 7 Financial Instruments: Disclosures and IFRS 16: Leases. The 
amendments are effective Jan. 1, 2021, and will be adopted by the Corporation in 2021, no financial impact is expected 
upon adoption. 

Certain  comparative  figures  have  been  reclassified  to  conform  to  the  current  period’s  presentation.  These 
reclassifications did not impact previously reported net earnings.
Comparative Figures

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Management’s Discussion and Analysis

Financial  instruments  are  used  for  proprietary  trading  purposes  and  to  manage  our  exposure  to  interest  rates, 
commodity prices and currency fluctuations, as well as other market risks. We may currently use physical and financial 
Financial Instruments
swaps,  forward  sale  and  purchase  contracts,  futures  contracts,  foreign  exchange  contracts,  interest  rate  swaps  and 
options to achieve our risk management objectives. Some of our physical commodity contracts have been entered into 
and are held for the purposes of meeting our expected purchase, sale, or usage requirements (“own use”) and as such, 
are not considered financial instruments and are not recognized as a financial asset or financial liability. Other physical 
commodity contracts that are not held for normal purchase or sale requirements and derivative financial instruments 
are recognized on the Consolidated Statements of Financial Position and are accounted for using the fair value method 
of accounting. The initial recognition of fair value and subsequent changes in fair value can affect reported earnings in 
the period the change occurs if hedge accounting is not elected. Otherwise, changes in fair value will generally not affect 
earnings until the financial instrument is settled.

Some  of  our  financial  instruments  and  physical  commodity  contracts  qualify  for,  and  are  recorded  under,  hedge 
accounting rules. The accounting for those contracts for which we have elected to apply hedge accounting depends on 
the type of hedge. Our financial instruments are mainly used for cash flow hedges or non-hedges. These categories and 
their associated accounting treatments are explained in further detail below.

For all types of hedges, we test for effectiveness at the end of each reporting period to determine if the instruments are 
performing as intended and hedge accounting can still be applied. The financial instruments we enter into are designed 
to ensure that future cash inflows and outflows are predictable. In a hedging relationship, the effective portion of the 
change  in  the  fair  value  of  the  hedging  derivative  does  not  impact  net  earnings,  while  any  ineffective  portion  is 
recognized in net earnings.

We have certain contracts in our portfolio that, at their inception, do not qualify for, or we have chosen not to elect to 
apply,  hedge  accounting.  For  these  contracts,  we  recognize  in  net  earnings  mark-to-market  gains  and  losses  resulting 
from changes in forward prices compared to the price at which these contracts were transacted. These changes in price 
alter the timing of earnings recognition, but do not necessarily determine the final settlement amount received. The fair 
value  of  future  contracts  will  continue  to  fluctuate  as  market  prices  change.  The  fair  value  of  derivatives  that  are  not 
traded  on  an  active  exchange,  or  extend  beyond  the  time  period  for  which  exchange-based  quotes  are  available,  are 
determined using valuation techniques or models.

Cash flow hedges are categorized as project, foreign exchange, interest rate or commodity hedges and are used to offset 
foreign exchange, interest rate and commodity price exposures resulting from market fluctuations. 
Cash Flow Hedges 

Foreign  currency  forward  contracts  may  be  used  to  hedge  foreign  exchange  exposures  resulting  from  anticipated 
contracts  and  firm  commitments  denominated  in  foreign  currencies,  primarily  related  to  capital  expenditures,  and 
currency exposures related to US-denominated debt. 

Physical and financial swaps, forward sale and purchase contracts, futures contracts and options may be used primarily 
to offset the variability in future cash flows caused by fluctuations in electricity and natural gas prices. Foreign exchange 
forward contracts and cross-currency swaps may be used to offset the exposures resulting from foreign-denominated 
long-term debt. Interest rate swaps may be used to convert the fixed interest cash flows related to interest expense at 
debt to floating rates and vice versa.

In  a  cash  flow  hedge,  changes  in  the  fair  value  of  the  hedging  instrument  (a  forward  contract  or  financial  swap,  for 
example) are recognized in risk management assets or liabilities, and the related gains or losses are recognized in other 
comprehensive income ("OCI"). These gains or losses are subsequently reclassified from OCI to net earnings in the same 
period  as  the  hedged  forecast  cash  flows  impact  net  earnings,  and  offset  the  losses  or  gains  arising  from  the  forecast 
transactions. For project hedges, the gains and losses reclassified from OCI are included in the carrying amount of the 
related PP&E.

Hedge accounting follows a principles-based approach for qualifying hedges, which is aligned with an entity's approach 
to  risk  management.  When  we  do  not  elect  hedge  accounting  or  when  the  hedge  is  no  longer  effective  and  does  not 
qualify for hedge accounting, the gains or losses as a result of changes in prices, interest or exchange rates related to 
these financial instruments are recorded in net earnings in the period in which they arise.

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Management’s Discussion and Analysis

Foreign-denominated long-term debt is used to hedge exposure to changes in the carrying values of our net investments 
in foreign operations that have a functional currency other than the Canadian dollar. Our net investment hedges using 
Net Investment Hedges 
US-denominated debt remain effective and in place. Gains or losses on these instruments are recognized and deferred in 
OCI and reclassified to net earnings on the disposal of the foreign operation. We also manage foreign exchange risk by 
matching  foreign-denominated  expenses  with  revenues,  such  as  offsetting  revenues  from  our  US  operations  with 
interest payments on our US-dollar debt.

Financial instruments not designated as hedges are used for proprietary trading and to reduce commodity price, foreign 
exchange  and  interest  rate  risks.  Changes  in  the  fair  value  of  financial  instruments  not  designated  as  hedges  are 
Non-Hedges
recognized in risk management assets or liabilities, and the related gains or losses are recognized in net earnings in the 
period in which the change occurs.

The majority of fair values for our project, foreign exchange, interest rate, commodity hedges and non-hedge derivatives 
are calculated using adjusted quoted prices from an active market or inputs validated by broker quotes. We may enter 
Fair Values
into commodity transactions involving non-standard features for which market-observable data is not available. These 
transactions  are  defined  under  IFRS  as  Level  III  instruments.  Level  III  instruments  incorporate  inputs  that  are  not 
observable from the market, and fair value is therefore determined using valuation techniques. Fair values are validated 
by using reasonably possible alternative assumptions as inputs to valuation techniques, and any material differences are 
disclosed in the notes to the consolidated financial statements. At Dec. 31, 2020, Level III instruments had a net asset 
carrying  value  of  $582  million  (2019  -  $686  million).  Please  refer  to  the  Critical  Accounting  Policies  and  Estimates 
section  of  this  MD&A  for  further  details  regarding  valuation  techniques.  Our  risk  management  profile  and  practices 
have not changed materially from Dec. 31, 2019.

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Management’s Discussion and Analysis

Sustainability or ESG management and performance is a priority at TransAlta. Sustainability is one of our core values, 
which  means  it  is  part  of  our  corporate  culture.  We  perpetually  strive  to  further  integrate  sustainability  into  our 
Environment, Social and Governance (“ESG”)
governance, decision-making, risk management and day-to-day business processes, while enabling our growth strategy. 
The ultimate outcome of our sustainability focus is continuous improvement on key, material ESG issues and ensuring 
our economic value creation is balanced with a value proposition for the environment and our stakeholders. Over time, 
we have set ourselves apart with actions that demonstrate ESG leadership:

▪ We have reported on sustainability for over 25 years, and 2020 reporting marks our sixth year of integrating 

financial and sustainability disclosure;
Today, we are proud to be one of the largest producers of wind power in Canada and the largest producer of 
hydro power in Alberta - we have grown our renewable energy capacity from approximately 900 MW in 2000 
to over 2,500 MW in 2020;
Through the period 2002 to 2025 and by way of retirements, gas conversions and expected gas conversions or 
repowerings, we are on track to transition over 5,000 MW of coal capacity. In 2026, we will be completely off 
of coal power generation;

▪

▪

▪

▪ We have reduced our annual emissions by over 25 million tonnes of carbon dioxide equivalent ("CO2e") since 
2005, which is approximately a 61 per cent reduction over the time period and highlights our decarbonization 
track record: this is the equivalent annual GHG emissions of a small country;
Our 2030 GHG reduction target supports further reductions and in 2021, we have established a new company-
wide target to achieve carbon neutrality by 2050; 
In 2020, CDP (the global disclosure system for environmental impacts known formerly as Carbon Disclosure 
Project)  recognized  TransAlta  with  an  A-  score,  ranking  us  among  industry  leaders  on  climate  change 
management;

▪

▪

▪

▪ We continue to evolve our leading sustainability target setting process that links targets to sustainability and 
financial  materiality,  sets  macro  targets  that  are  both  year-over-year  and  long  term,  and  involves  executive 
team and Board approval; 
In 2020, TransAlta formed an Equity, Diversity and Inclusion Council and empowered this Council to develop a 
long-term  equity,  diversity  and  inclusion  strategy.  TransAlta  also  adopted  a  Equity,  Diversity  and  Inclusion 
Pledge unanimously supported by our Board and executive team;
In 2021, TransAlta was once again added to the Bloomberg Gender-Equality Index — recognition of our focus 
on equity, diversity and inclusion; 
In  2020,  the  Globe  and  Mail  reported  that  we  moved  from  a  ranking  of  48  to  a  ranking  of  14  in  their  annual 
"Board  Games"  report.  Board  Games  assesses  the  work  of  Canada’s  largest  boards  of  directors  against  a 
rigorous set of governance criteria (well beyond the minimum set by regulators), covering board composition, 
compensation,  shareholder  rights  and  disclosure.  The  Board  Games  are  undertaken  by  the Globe  and  Mail  in 
collaboration with the University of Toronto;
Our Indigenous youth education target ensures ongoing Indigenous youth education support and, in 2021, we 
are establishing a new company-wide Indigenous cultural education and awareness target; and

▪

▪

▪ We participate in and are members of key sustainability organizations and working groups such as the EXCEL 
Partnership,  the  Canadian  Business  for  Social  Responsibility,  the  Energy  Sector  Sustainability  Leadership 
Initiative, Canadian Electricity Association Sustainable Electricity Steering Committee and Future-Fit, which all 
provide validation and support of our sustainability strategy. 

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Management’s Discussion and Analysis

Our  business  is  electricity.  We  keep  the  lights  on,  our  technology  charged  and  critical  infrastructure  running.  We 
support  commercial  and  industrial  customers  across  three  countries.  In  total,  we  own  75  power-generating  facilities 
Sustainability Strategy
across Australia, Canada and the US. We are invested in a mix of wind, solar, hydro, energy storage, natural gas and coal 
assets for a total of approximately 8,000 MW of owned generating capacity. 

Our key strategic sustainability pillars build on our corporate strategy and weave through our business. Some of these 
focus areas are already part of our DNA, and our track record in these areas illustrates our commitment to sustainability 
(including climate change leadership and safety). In other areas where we have set new goals in recent years (including, 
equity,  diversity  and  inclusion),  we  believe  the  focus  will  only  strengthen  our  corporate  strategy  and  support  value 
creation into the future. Our pillars include:

1. Clean, Reliable and Sustainable Electricity Production
Safe, Healthy, Diverse, and Engaged Workplace
2.
3. Positive Indigenous, Stakeholder and Customer Relationships
4. Progressive Environmental Stewardship 
5.

Technology and Innovation

In order for an organization to truly integrate sustainability, it requires accountability at the Board and executive level. It 
requires an understanding of ESG issues and associated corporate actions to address these issues, while continuing to 
Sustainability Governance
balance operations and growth. 

Sustainability is overseen by TransAlta's Governance, Safety and Sustainability Committee (“GSSC”) of the Board. The 
GSSC  assists  the  Board  in  fulfilling  its  oversight  responsibilities  with  respect  to  the  Corporation’s  monitoring  of 
environmental,  health  and  safety  regulations,  public  policy  changes  and  the  establishment  and  adherence  to 
environmental,  health  and  safety  practices,  procedures  and  policies.  For  additional  details  on  our  governance,  please 
refer to the Governance and Risk Management section of this MD&A.

The following outlines material environmental and social considerations in respect of our operated facilities.
Sustainability Reporting: Disclosure Guidance and Materiality
Key  elements  of  the  following  disclosure  are  guided  by  our  sustainability  materiality  assessment.  Our  materiality 
assessment  is  developed  through  evaluation  of  key  sector-specific  research  on  materiality  issues  and  supported  by 
internal  and  external  engagement  on  key  sustainability  issues.  To  provide  context  on  how  ESG  affects  our  business 
(including  material  focus  areas),  our  content  is  guided  by  leading  ESG  reporting  frameworks,  including  the  Global 
Reporting Initiative ("GRI"), Sustainability Accounting Standards Board ("SASB") and the Task Force on Climate-related 
Financial  Disclosures  ("TCFD").  We  continue  to  increase  our  alignment  with  SASB  and  TCFD.  Our  ESG  content  is 
integrated  within  this  MD&A.  Content  is  structured  using  non-traditional  capital  (this  includes  natural,  human,  social 
and  relationship,  intellectual  and  manufactured  capital)  as  per  guidance  from  the  International  Integrated  Reporting 
Framework.  This  approach  ensures  we  inform  investors  on  how  management  and  performance  on  non-traditional 
capitals contribute to financial value. 

Environmental and Social Risk and Materiality
Our  materiality  assessment  informs  our  focus  on  major  environmental  and  social  risks.  Our  major  environmental  risk 
factors include weather, environmental disasters, climate change, exposure to the elements, environmental compliance 
risk, and current and emerging environmental regulation. Our major social risk factors include public health and safety, 
employee  and  contractor  health  and  safety,  local  communities,  employee  retention,  reputation  management,  and 
Indigenous and stakeholder relationships. 

For further guidance on our risk factors, please refer to the Risk Management section of this MD&A. 

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Management’s Discussion and Analysis

Reliable, Low-Cost and Sustainable Energy Production: 
Natural, Intellectual and Social Capital Management
TransAlta has been powering economies and communities for over 109 years. Our mission is to provide safe, low-cost 
and  reliable  clean  electricity  to  our  customers.  To  achieve  this  goal,  in  today's  evolving  economy  and  increasingly 
Business and Economic Model Resilience
electrified  world,  our  strategy  focuses  on  renewable  electricity,  natural  gas  and  a  deep  commitment  to  sustainability. 
Our  business  model  is  primarily  focused  on  providing  power  to  industrial  and  commercial  customers.  This  model  has 
stood the test of time and we continue to focus our efforts on the customer and adapting to meet customer needs. As 
customers  increasingly  adopt  ESG  and  sustainability  goals,  we  are  well  positioned  to  support  their  sustainability 
objectives. We developed our first sustainability report in 1994. In the early 2000s, we were an early adopter of wind. 
Our expertise in renewable energy spans 109 years: we began hydro operations in the early 1900s and today we are a 
leading hydro and wind producer. We believe we are uniquely positioned as the world continues to electrify and adopt 
sustainability practices.

Our  business  resilience  is  enhanced  by  a  purpose-based,  long-term  and  sustainable  business  strategy:  growth  in 
renewable  electricity  and  natural  gas  and  a  commitment  to  sustainability.  TransAlta  has  operated  power-generation 
Brand Recognition
assets  for  over  109  years,  which  reflects  this  approach  to  long-term  and  sustainable  business  practices.  A  long-term 
commitment to business and partnerships lends itself to goodwill and brand recognition, something we value and do not 
take  for  granted.  We  believe  our  low-cost  and  clean  electricity  strategy,  supported  by  our  internal  values  and 
sustainable approach to business, will help reinforce and continue to increase our positive brand recognition. 

At TransAlta, we define intellectual capital as our knowledge-based assets. Measuring these assets serves two purposes. 
First,  we  seek  to  understand  them  so  we  can  improve  their  management  and  performance.  Second,  we  seek  to 
Intellectual Capital
understand these assets to communicate their real value. The following highlights some of our knowledge-based assets, 
which we believe provide us with a competitive advantage and contribute to shareholder value. 

Diversified Knowledge 
The experience and acumen of our employees enhances our value creation. Our experience in developing and operating 
power-generation technologies extends to over 109 years, and many of our employees have worked with us for over 30 
years. Our energy marketing business complements our knowledge of operating power-generation assets. 

Our experience in developing and operating power-generation technologies is highlighted below:

Power-Generation Type

Operating Experience (years)

Hydro

Natural Gas

Coal

Wind

Solar

109

70

70

18

5

For further details, please refer to Customers in this section of this MD&A. 

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Management’s Discussion and Analysis

As a large electricity generator, we work diligently to ensure the power we provide our customers is reliable, affordable 
and  has  low  environmental  impact.  We  provide  decentralized  power  solutions  to  industrial  customers  and  we  supply 
Grid Resiliency
power to centralized power systems.

In  all  of  the  jurisdictions  where  we  operate,  we  work  closely  with  the  system  operators  to  ensure  overall  supply 
adequacy  and  reliability  of  the  grid.  In  Alberta,  where  we  are  also  a  transmission  facility  owner,  we  own  grid 
infrastructure that addresses system reliability. We consider a myriad of factors in our planning and operation decisions 
that could put grid resiliency at risk, including renewable energy intermittency, cyberattacks, extreme weather events 
and natural disasters.

One solution to support renewable energy intermittency includes investment in battery storage technology. Our first 
battery storage project began commercial operations in 2020. For more information, please refer to Renewable Energy 
and Battery Storage in our Natural Capital Management section of this MD&A. For more information on cyberattacks, 
please  refer  to  Public  Health  and  Safety  in  the  Social  and  Relationship  Capital  section  of  this  MD&A.  For  more 
information  on  extreme  weather  events  and  natural  disasters,  please  refer  to  Weather  in  the  Natural  Capital 
Management section of this MD&A.

TransAlta serves industrial and commercial customers with power and energy services across its fleet in Canada, the US 
and Australia. As one of the largest electricity generators in Alberta, our team serves businesses with: 
Customers 

Energy consumption and cost management solutions; 

▪
▪ Market price risk and volume exposure mitigation; 
▪
▪ Monitoring of energy market design changes, price signals and applicable and available incentives. 

Sustainability initiatives such as self-generated electricity and environmental attributes such as EPCs; and 

The customer solutions team at TransAlta has maintained a large portfolio of customers in Alberta across a broad range 
of industry segments, including commercial real estate, municipal, manufacturing, industrial, hospitality, finance, and oil 
and gas. TransAlta is proud of the service we provide to our customers, which is evidenced by the achievement of over 
90 per cent customer retention for the last three years.

Across  our  business  in  Canada,  the  US  and  Australia,  we  are  focused  on  helping  our  customers  achieve  their 
sustainability  goals.  One  example  is  through  TransAlta’s  fleet  of  on-site  cogeneration  facilities.  Cogeneration  is  the 
process  of  generating  electricity  and  steam  simultaneously.  When  constructed  on-site,  the  construction  of  additional 
transmission lines is not required, which avoids disruption to the environment. It also reduces the natural gas required 
for  some  industrial  processes  by  using  high-efficiency  steam  production  rather  than  boilers.  Examples  of  industrial 
processes  that  utilize  cogeneration  include  gas  processing,  steam-assisted  gravity  drainage  oil  sands  extraction, 
chemical  manufacturing,  and  pulp  and  paper  production.  Cogeneration  is  recognized  by  regulatory  bodies  for  its 
efficient generation of power when compared to other forms of natural gas power generation, and thus can potentially 
produce EPCs that can be used to satisfy our customers' regulatory obligations or sold for additional revenue.

We provide on-site generation for large mining and industrial customers. This requires us to be continually engaged with 
these  customers  ensuring  that  current  electricity  requirements  are  provided  safely,  reliably  and  cost-effectively  with 
the benefit of lower GHG emissions.  

Another way we contribute to our customers’ sustainability goals is through the development of renewable energy and 
the use of environmental attributes. We continue to develop renewable energy facilities to support customers achieving 
their  sustainability  goals  and  targets,  such  as  100  per  cent  renewable  power  targets  and/or  GHG  reduction  targets. 
Recent examples include our Skookumchuck wind project in Washington, which has a 137 MW capacity and is subject to 
a PPA with a single offtaker and our Big Level wind project in Pennsylvania, which has a 90 MW capacity and is subject 
to a PPA with Microsoft Corporation.

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Management’s Discussion and Analysis

We have the ability to generate, trade, purchase and sell: EPCs; Alberta carbon offset credits; Renewable Energy Credits 
("RECs");  and  emission  offsets.  Alberta  carbon  offsets  can  be  voluntarily  generated  by  Alberta  projects,  which  meet 
Alberta carbon offset system qualification protocols. Our Alberta wind facilities generate Alberta carbon offset credits 
or EPCs. EPCs are credits generated by regulated facilities that reduce GHG emissions below their specified reduction 
targets  in  the  Alberta-based  carbon  market.  RECs  are  produced  from  our  renewable  energy  assets  (wind,  hydro  and 
solar)  and  can  be  traded  in  voluntary  carbon  markets  or  sold  to  customers.  RECs  can  be  used  to  meet  regulatory 
requirements when a target for renewable energy generation is set by a jurisdiction or can be used to voluntarily "green" 
electricity procurement. Emissions offsets are produced from voluntary projects that reduce emissions in sectors of the 
economy not covered by carbon reduction regulations. The optimization of environmental attributes can be used as a 
cost-effective  way,  for  the  Corporation  or  our  customers,  to  lower  compliance  costs  attributed  to  carbon  policies  or 
renewable portfolio standards, or utilized to achieve voluntary corporate sustainability or carbon reduction goals.

Energy Affordability
TransAlta focuses on assisting commercial and industrial customers in managing their cost of energy. TransAlta has a full 
suite of procurement strategies and products with various terms available to our customers to assist in understanding 
and reducing their energy costs. 

For customers interested in making a long-term commitment to obtain predictable costs, TransAlta has the experience 
to develop cogeneration facilities or long-term offtake agreements from its existing and future gas fired and renewable 
facilities.

End-Use Efficiency and Demand
TransAlta’s commercial and industrial customers have access to an extensive set of monthly reports providing detailed 
tracking of customer usage, allowing for corrective action as required, as well as cost-saving recommendations. 

Our Power Factor Report advises the customer of sites that operate at less than a 90 per cent power factor so they can 
consider  installing  energy-efficient  equipment.  By  reducing  the  customer’s  power  system  demand  charge  through 
power  factor  correction,  the  customer’s  site  puts  less  strain  on  the  electricity  grid  and  reduces  its  carbon  footprint. 
TransAlta’s  Site  Health  Report  advises  customers  of  a  site  whose  peak  demand  has  been  permanently  reduced  for  a 
variety of reasons from its initial in-service date. The customer may be paying a higher demand charge each month to 
the  distribution  company  based  on  the  original  peak  demand  expected  at  the  site.  TransAlta  collaborates  with  the 
customer  and  determines  the  new  peak  demand  based  on  the  customer’s  operation.  The  customer,  working  with  the 
distribution  company,  may  find  it  economic  to  buy  down  the  distribution  contract  to  reduce  the  monthly  distribution 
costs going forward.

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Management’s Discussion and Analysis

We  continue  to  increase  financial  value  from  natural  or  environmental  capital-related  business  activities,  while 
minimizing  our  environmental  footprint  and  potential  risk  factors  related  to  environmental  impacts.  Comparable 
Progressive Environmental Stewardship: Natural Capital Management
EBITDA from renewable energy generation in 2020 was $353 million (2019 - $341 million). Our revenue in 2020 from 
environmental attribute sales was $25 million (2019 - $28 million). In addition, in 2020 the sale of coal byproducts and 
waste-related recycling generated financial value in the range of $15 million to $20 million. This is lower than our range 
reported in 2019 of $25 million to $35 million due to our ongoing transition away from coal-fired generation. 

The following are key trends in our natural capital:

Year ended Dec. 31

Renewable energy comparable EBITDA

Environmental attribute sales revenue

GHG emissions (million tonnes CO2e)

2020

353

25

16.4

2019

341

28

20.6

2018

342

22

20.8

All energy sources used to generate electricity have some impact on the environment. While we are pursuing a business 
strategy  that  includes  investing  in  renewable  energy  resources  such  as  wind,  hydro  and  solar,  we  also  believe  that 
Environmental Strategy
natural  gas  will  continue  to  play  an  important  role  in  meeting  energy  needs  as  part  of  a  clean  electricity  transition. 
Natural  gas  provides  low-emission  baseload  and  peaking  generation  to  support  system  demands  and  intermittent 
renewable generation. TransAlta operates simple and combined-cycle natural gas units and cogeneration facilities. Since 
2002, we have retired over 2,000 MW of coal and converted approximately 420 MW of coal  to gas. Our conversion to 
gas  transition  is  ongoing,  and  we  plan  to  convert  or  repower  Alberta  coal  units  to  natural  gas  in  the  2020  to  2023 
timeframe while retiring our Washington State coal facility by the end of 2025. In 2026, our generation mix will be made 
up of natural gas and renewable energy only.

Regardless of the fuel type, we place significant importance on environmental compliance and continued environmental 
impact  mitigation,  while  seeking  to  deliver  low-cost  and  reliable  electricity.  The  Corporation  strives  to  be 
environmentally  responsible  and  recognizes  that  the  competitive  pressures  for  economic  growth  and  cost  efficiency 
must be integrated with sound sustainability management, including environmental stewardship. 

We  are  subject  to  environmental  laws  and  regulations  that  affect  aspects  of  our  operations,  including  air  emissions, 
water  quality,  wastewater  discharges  and  the  generation,  transport  and  disposal  of  waste  and  hazardous  substances. 
The  Corporation’s  activities  have  the  potential  to  damage  natural  habitat,  impact  vegetation  and  wildlife,  or  cause 
contamination  to  land  or  water  that  may  require  remediation  under  applicable  laws  and  regulations.  These  laws  and 
regulations require us to obtain and  comply  with  a  variety of  environmental registrations, licenses, permits  and  other 
approvals. The environmental regulations in the jurisdictions in which we operate are robust. Both public officials and 
private individuals may seek to enforce environmental laws and regulations against the Corporation. We interact with a 
number of regulators on an ongoing basis, including but not limited to: Alberta Environment and Parks; Ministry of the 
Environment,  Conservation  and  Parks  in  Ontario;  Ministry  of  Natural  Resources  and  Forestry  in  Ontario;  Ministry  of 
Forest  Lands,  Natural  Resource  Operations  and  Rural  Development  in  British  Colombia;  Environment  and  Climate 
Change  Canada;  Fisheries  and  Oceans  Canada;  Michigan  Department  of  Environment,  Great  Lakes,  and  Energy; 
Southwest Clean Air Agency in Washington; Washington State Department of Ecology; Washington State Department 
of Health; US Environmental Protection Agency (EPA); and the Department of Agriculture, Water and the Environment 
in Australia; and the Clean Energy Regulator in Australia. 

Currently, the most material natural or environmental capital impacts to our business are GHG emissions, air emissions 
(pollutants,  metals)  and  energy  use.  Other  material  impacts  that  we  manage  and  track  performance  on  via  our 
environmental management systems include land use, water use and waste management.

The  GSSC  assists  the  Board  in  fulfilling  its  oversight  responsibilities  with  respect  to  the  Corporation’s  monitoring  of 
environmental, health and safety regulations, public policy changes, the establishment and adherence to environmental, 
Environmental Governance
health  and  safety  practices,  procedures  and  policies  in  response  to  legal/regulatory  and  industry  compliance  or  best 
practices.  The  importance  of  environmental  protection  is  outlined  under  our  Total  Safety  Management  Policy  as  a 
corporate  responsibility  for  TransAlta,  and  the  personal  responsibility  of  each  employee  and  contractor  working  on 
TransAlta's behalf. This policy is approved by our President and Chief Executive Officer ("CEO").

For more details on governance, please refer to the Governance and Risk Management section of this MD&A.

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Management’s Discussion and Analysis

All  of  our  75  facilities  have  Environmental  Management  Systems  (“EMS”)  in  place,  the  majority  of  which  closely  align 
with the internationally recognized ISO 14001 EMS standard. We have operated our facilities in line with ISO 14001 for 
Environmental Management Systems
over 20 years, and our systems and knowledge of management systems are therefore mature. Only two facilities do not 
have  ISO  14001  aligned  EMS  in  place,  although  these  facilities  do  have  a  comparable  EMS  in  place.  This  is  due  to 
commercial  arrangements  (TransAlta  is  not  the  operator  of  those  two  sites).  Aligning  with  ISO  14001  provides 
assurance that our systems are designed to continuously improve performance.

Reducing the environmental impact of our activities benefits not only our operations and financial results, but also the 
communities in which we operate. We have a proactive approach to minimizing environmental risks and we anticipate 
Environmental Performance
this  strategy  will  benefit  our  competitive  position  as  stakeholders  and  society  place  an  increasing  emphasis  on 
successful environmental management. 

Renewable Energy and Battery Storage
Since 2005, we have added over 1,500 MW in renewable electricity capacity. We operate over 900 MW of hydro energy 
and our experience with hydro operations spans over 109 years. We were an early adopter of wind energy and today 
operate  1,500  MW  of  wind  power.  In  2015,  we  made  our  first  solar  investment  in  a  21  MW  solar  facility  in 
Massachusetts,  and  we  continue  to  look  for  opportunities  to  develop  and  operate  solar  energy.  In  2020,  we 
commissioned the first utility-scale battery storage project in Alberta, located at our Summerview II wind facility. The 
project uses Tesla battery technology and has a capacity of 10 MW.

Our production from renewable electricity in 2020 offset the equivalent of approximately 2.9 million tonnes of CO2e, or 
the removal of approximately 630,000 cars from North American roads. The estimated GHG offset is calculated using 
production  data  (MWh)  from  each  renewable  facility  multiplied  by  the  regional  (provincial  or  state)  grid  emissions 
intensity.  This  supports  our  customers  in  achieving  their  renewable  energy  procurement  and/or  GHG  emissions 
reduction goals. For more details on the types of environmental attributes we generate for customers, please refer to 
the Customers section of this MD&A.

Natural Gas
Natural gas plays an important role in the electricity sector, providing low-emission baseload and peaking generation to 
support  system  demands  and  intermittent  renewable  generation  as  part  of  a  clean  electricity  transition.  TransAlta 
operates simple-cycle, combined-cycle, and cogeneration facilities in Canada, the US and Australia. Natural gas facilities 
provide highly efficient electricity and, in the case of cogeneration, steam production, directly for customers and for the 
wholesale markets. TransAlta is a significant operator of natural gas electricity in Canada and Australia. We have started 
converting  or  repowering  Alberta  coal  units  to  natural  gas.  We  continue  to  see  a  role  for  natural  gas  in  the  future  to 
support system demands and increasing demand for power from customers. 

Coal Transition
Our  conversion  to  gas  transition  plan  in  Alberta  is  expected  to  significantly  reduce  our  environmental  footprint.  As  a 
result of our coal retirements, conversion to gas and repowerings, our energy use, GHG emissions, air emissions, waste 
generation and water usage will significantly decline. Transitioning off coal will eliminate all of our mercury emissions, 
the  majority  of  particulate  matter  and  sulphur  dioxide  emissions  ("SO2"),  as  well  as  significantly  reduce  our  NOx 
emissions. The coal retirements eliminate significant GHGs, and the conversion of our Alberta coal facilities to natural 
gas reduces GHG emissions by 40-60 per cent and supports system reliability, affordability and the growth of renewable 
electricity in Alberta. Our converted or repowered facilities will also use lower carbon natural gas, compared to facilities 
in other jurisdictions, as new methane reduction regulations in Alberta and Canada will reduce GHGs in the production 
and processing phase with respect to flaring and venting of methane (fugitive GHG emissions).

In 2020, TransAlta announced plans to fast-track away from coal mining and coal-fired power generation in Canada by 
the end of 2021. At our Centralia coal facility in Washington State, one unit was retired in 2020 and the second unit will 
retire  by  the  end  of  2025.  In  2022,  our  coal  capacity  will  be  670  MW,  a  significant  reduction  from  coal  capacity  of 
approximately 5,000 MW in 2015. Coal will be entirely eliminated from our operations by the end of 2025.  

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Energy Use
TransAlta uses energy in a number of different ways. We burn gas, diesel and coal (to the end of 2021 in Canada and the 
end  of  2025  at  Centralia)  to  generate  electricity.  We  harness  the  kinetic  energy  of  water  and  wind  to  generate 
electricity.  We  also  generate  electricity  from  the  sun.  In  addition  to  combustion  of  fuel  sources,  we  also  track 
combustion of gasoline or diesel in our vehicles and the electricity use and fuel use for heating (such as natural gas) in the 
buildings we occupy. Knowledge of how much energy we use allows us to optimize and create energy efficiencies. As an 
electricity generator, we continually and consistently look for ways to optimize and create efficiencies related to the use 
of energy. For example, in 2019, we supported a study conducted by Stanford University to understand how to improve 
wind production. The research showed that angling turbines slightly away from the wind can boost energy produced and 
even out variable supply.  

The  following  table  captures  our  energy  use  (millions  of  gigajoules).  Energy  use  declined  by  19  per  cent  in  2020  over 
2019, primarily as a result of reduced coal use. Minor revisions were made to our energy use data in 2020 as a result of 
accrual adjustments from 2019 and 2018. Historical 2019 total energy use was revised from 345 million gigajoules to 
346 million gigajoules as a result of these changes. Due to rounding, there was no impact to our reported 2018 total.

Year ended Dec. 31

Hydro

Wind & Solar

North American Gas

Australia Gas

Alberta Thermal

Centralia

Corporate and Energy Marketing

Total energy use (million gigajoules)

2020

2019

2018

—

—

30  

21  

135  

93  

— 

279

—  

—  

30 

20 

168 

128 

— 

346

— 

— 

28 

20 

203

107 

— 

358

Air Emissions
Our coal facilities emit air emissions that we track, analyze and report to regulatory bodies. We also work on mitigation 
solutions depending on the type of air emission. We report our major air emissions from coal, which includes NOx, SO2, 
particulate matter and mercury. We will continue reducing air emissions in our existing fleet through our conversion and 
retirement of coal units in Alberta and Washington State. In 2020, we accelerated our target of 95 per cent SO2 and 50 
per  cent  NOx  emission  reductions  over  2005  levels  by  moving  the  target  date  from  2030  to  2026.  In  addition,  we 
increased the stringency of our reduction levels for NOx to 80 per cent. Since 2005, we have reduced SO2 emissions by 
83 per cent and NOx by 68 per cent. We continue to capture 80 per cent of mercury emissions at our coal facilities and, 
by the end of 2025, mercury emissions will be eliminated following the conversions to gas, Sundance Unit 5 repowering 
and  the  retirement  of  the  Centralia  facility.  Particulate  matter  and  SO2  emissions  will  also  be  virtually  eliminated  or 
considered negligible.

None  of  our  Alberta  coal  facilities  are  located  within  50  kilometres  of  dense  or  urban  populations,  but  our  Centralia 
thermal facility in Washington State is 40 kilometres from a dense or urban population. As per guidance from SASB, “a 
facility  is  considered  to  be  located  near  an  area  of  dense  population  if  it  is  located  within  49  kilometres  of  an  area  of 
dense population” (being deemed to be a "minimum population of 50,000 persons"). The Centralia thermal facility has 
two  units  and  we  retired  one  unit  in  2020  and  will  retire  the  additional  unit  by  the  end  of  2025,  at  which  time  air 
emissions from our coal facilities will be eliminated.

Our  gas  facilities  emit  low  levels  of  NOx  that  trigger  reporting  obligations  to  national  regulatory  bodies.  These  gas 
facilities also produce trace amounts of SO2 and particulate matter, but at levels that are deemed negligible and do not 
trigger  any  reporting  requirements  or  compliance  issues.  Many  of  our  gas  facilities  are  located  in  very  remote  and 
unpopulated regions, away from dense urban areas. Our Sarnia, Windsor, Ottawa and Fort Saskatchewan gas facilities 
are our only facilities with air emissions within 49 kilometres of dense or urban environments.

Our  total  air  emissions  in  2020  decreased  compared  with  2019  levels.  Specifically,  NOx  was  reduced  19  per  cent, 
particulate matter was reduced 36 per cent and SO2 was reduced 26 per cent over 2019 levels. Mercury emissions also 
decreased  by  12  per  cent  over  2019  levels  (which  is  not  reflected  in  the  table  below  due  to  rounding).  Reductions  in 
emissions were largely due to an increase in co-firing (gas and coal) at our Alberta thermal facilities and a reduction in 
production  from  our  Centralia  coal  facility.  Historical  NOx  incurred  minor  revisions  in  2020  to  include  NOx  emissions 
from  our  Highvale  mine.  The  revision  increased  2018  NOx  from  28,000  to  29,000  tonnes.  There  was  no  change  to 
reported 2019 tonnes as the revision was minor and, with rounding, the volume remains consistent. 

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The following table represents our material air emissions. Figures have been rounded to the nearest one thousand with 
the exception of mercury, which are rounded to the nearest ten as totals are considerably lower:

Year ended Dec. 31

Sulphur dioxide (tonnes)

Nitrogen oxides (tonnes)

Particulate matter (tonnes)

Mercury (kilograms)

2020

12,000 

21,000 

5,000 

60

2019

16,000 

26,000 

8,000  

60

2018

19,000 

29,000 

8,000 

70

Water
Our principal water use is for cooling and steam generation in our coal and gas facilities but our hydro operations also 
require water flow for operations. Water for coal and gas operations is withdrawn primarily from rivers where we hold 
permits to withdraw water and must adhere to regulations on the quality of discharged water. The difference between 
withdrawal  and  discharge,  representing  consumption,  is  due  to  several  factors,  which  include  evaporation  loss  and 
steam production for customers. Typically, TransAlta withdraws in the range of 220-240 million m3 of water across our 
fleet.  In  2020,  we  withdrew  approximately  240  million  m3  (2019  -  260  million  m3)  and  returned  approximately  200 
million m3 (2019 - 220 million m3) or 85 per cent. Overall, water consumption was approximately 40 million m3 (2019 - 
40 million m3). Water withdrawal and consumption was lower in 2020 primarily due to decreased production from our 
Alberta thermal and Centralia thermal facilities. 

Centralia 2019 water data were revised in 2020 as a result of identified discrepancies, which resulted in overreported 
raw water intake or water withdrawal for sustainability reporting. The issue was specific to 2019 data only. Water from 
our Centralia facility is also reported to the Department of Ecology (“DOE”) in Washington State. There were no issues 
with our data submitted to the DOE, as the information generated for sustainability reporting followed a separate data 
collection  process.  As  a  result,  Centralia  2019  water  withdrawal  was  revised  from  approximately  52  million  m3  to  26 
million  m3.  The  Centralia  business  unit  has  performed  a  full  review  of  its  water  reporting  process  and  our  corporate 
function will review its internal assurance process to support avoidance of any future reoccurrence of this event. 

Our 2019 company-wide water withdrawal, total water consumption and water intensity were also revised as a result of 
this change. Overall water withdrawal reduced from approximately 290 million m3 to 260 million m3 (result of rounding), 
total water consumption reduced from 70 million m3 to 40 million m3 (result of rounding) and our company-wide water 
intensity reduced from 2.48 m3/MWh to 1.55 m3/MWh.

In  2020,  we  established  a  new  water  consumption  reduction  target  to  reduce  fleet-wide  water  consumption 
(withdrawals minus discharge) by 20 million m3 or 40 per cent in 2026 over a 2015 baseline. Water consumption in 2015 
was  45  million  m3.  This  target  is  in  line  with  the  UN's  Sustainable  Development  Goals  ("SDGs"),  specifically  "Goal  6: 
Clean  Water  and  Sanitation."  Our  water  consumption  will  fluctuate  somewhat  over  the  period  of  2020-2025  as  we 
transition off coal, convert and repower gas facilities and ramp production upwards.

The following represents our total water consumption (million m3) over the last three years. Figures below have been 
rounded to the nearest 10 million m3:

Year ended Dec. 31

Water withdrawal

Water discharge
Total water consumption (million m3)

2020

240

200

40

2019

260

220

40

2018

250

210

40

Our  largest  water  withdrawal  and  discharge  occurs  at  our  Sarnia  gas  cogeneration  facility  (which  produces  both 
electricity  and  steam  for  our  customer).  The  facility  operates  as  a  once-through,  non-contact  cooling  system  for  our 
steam turbines. Despite large withdrawals from the adjacent St. Clair River to support our Sarnia operations, we return 
approximately 93 per cent of the water withdrawn. Water from this source is currently at "low risk" as per analysis from 
the SASB-endorsed Aqueduct Water Risk Atlas tool. 

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The  Aqueduct  Water  Risk  Atlas  tool  highlights  that  water  risk  is  high  at  our  interior  and  southern  Western  Australia 
facilities  due  to  high  interannual  variability  in  the  region.  Interannual  variability  refers  to  wider  variations  in  regional 
water supply from year to year. Our water supply at these facilities is provided at no cost under PPAs with our mining 
customers, hence our risk is significantly mitigated. In addition, our customers have developed conservation and re-use 
strategies aimed at recycling water for mining operational needs. All water used in the region is sourced from scheme 
water,  and  with  respect  to  gas  and  diesel  turbine  water  use,  water  wash  techniques  and  frequency  of  activities  are 
continually modified to minimize consumption and environmental impact. Water used in our operations is returned to 
our customers, who repurpose this water for vegetation and dust suppression in their mining operations. 

At the South Hedland facility in Western Australia, water risk is also high due to the risk of flooding in the region. The 
South Hedland facility was built above normal flood levels to mitigate potential risk from flooding. During a category 4 
cyclone  event  in  the  area  and  associated  flooding  in  the  region  in  2019,  the  South  Hedland  facility  stayed  dry  and 
continued  to  generate  power  for  the  region.  In  addition,  the  South  Hedland  facility  has  developed  a  Water  Efficiency 
Management  Plan  with  Water  Corporation  WA,  the  principal  supplier  of  water,  wastewater  and  drainage  services  in 
Western  Australia.  Initiatives  are  aimed  at  reducing  water  consumption  and  costs  through  innovative  technology  and 
efficiencies identified through facility management.

In southern Alberta, our hydroelectric facilities have played an increasingly important water management role following 
the flood of 2013. In 2016, we signed a five-year agreement with the Government of Alberta to manage water on the 
Bow River at our Ghost Reservoir facility to aid in potential flood mitigation efforts, as well as at our Kananaskis Lakes 
System (which includes Interlakes, Pocaterra and Barrier) for drought mitigation efforts.

Waste
The importance of environmental protection and managing waste is outlined in our Total Safety Management Policy as a 
corporate  responsibility  for  TransAlta,  and  a  responsibility  of  each  employee  and  contractor  working  on  TransAlta's 
behalf. Our waste data is reported annually to a number of different regulatory bodies.

In 2020, our operations generated approximately 1.1 million tonnes equivalent of waste (2019 - 1.5 million tonnes). Of 
total waste generated, 98 per cent was non-hazardous waste and two per cent was hazardous waste. In 2020, only 0.1 
per cent of total waste generated was directed to landfill. From the remaining 99.9 per cent, 45 per cent was returned to 
the mine (ash from coal combustion), 47 per cent was reused or sold to third parties, three per cent was recycled and five 
per cent was stored. 

In 2020, we established a new waste reduction target that by 2022 TransAlta will reduce total waste generation by 80 
per cent over a 2019 baseline of 1.5 million tonnes equivalent of waste generation. This is in line with the UN's SDGs, 
specifically, "Goal 12: Responsible Consumption and Production."

Our reuse waste or byproduct waste is generally sold to third parties. Byproduct sales and associated annual revenue 
generation  typically  ranges  from  $15  million  to  $20  million.  Our  operating  teams  are  diligent  at  not  only  minimizing 
waste, but also maximizing recoverable value from waste. We have invested in equipment to capture byproducts from 
the combustion of coal, such as fly ash, bottom ash, gypsum and cenospheres, for subsequent sale. These non-hazardous 
materials add value to products like cement and asphalt, wallboard, paints and plastics.

Given our transition off coal, we will no longer produce fly ash waste in Canada past the end of 2021 and past the end of 
2025 in the US. The Corporation is looking at recovering fly ash that was returned to its original source at Highvale mine 
to  replace  this  supply,  which  is  used  extensively  in  the  concrete  industry.  By  turning  the  recovered  product  into 
something  marketable,  it  will  continue  to  aid  in  reducing  the  amount  of  cement  produced  and  consequent  emissions 
while  offering  new  job  and  economic  growth  opportunities.  This  innovative  technology  contributes  to  a  circular 
economy and will reduce reclamation liabilities for TransAlta. 

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Biodiversity
The  importance  of  environmental  protection  and  biodiversity  is  outlined  in  our  Total  Safety  Management  Policy  as  a 
corporate  responsibility  for  TransAlta,  and  a  responsibility  of  each  employee  and  contractor  working  on  TransAlta's 
behalf. We consider the biodiversity impact at all of our existing operations (with greater focus being given to mining 
operations) and the biodiversity impacts of all new growth projects are evaluated in line with regulatory compliance and 
with respect to TransAlta's focus on biodiversity, which is to support biodiversity health. 

Growth
Each new TransAlta development project must complete an in-depth environmental assessment (as prescribed by the 
local regulation and in line with our own assessment practices) describing baseline environmental conditions, identifying 
potential  effects  and  developing  mitigation  for  identified  environmental  sensitivities  prior  to  construction  and 
operation. These assessments have been specifically designed to meet the environmental information requirements of 
the  respective  regions  in  which  we  operate  while  identifying  alignment  with  the  intent  of  the  standards  and/or 
regulations applicable to these jurisdictions (e.g., Wildlife Directive for Alberta Wind Energy Projects, US Fish & Wildlife 
Service  Land-Based  Wind  Energy  Guidelines,  etc.).  Typically,  our  renewable  projects  are  greenfield  development 
projects that require a higher level of evaluation compared to a number of our gas projects, which integrate into existing 
industrial facilities.

In  addition,  TransAlta  provides  a  detailed  wildlife  mitigation  plan  to  environmental  regulators  outlining  specific 
measures that will be employed to mitigate the effects that project construction and operation activities may have on 
wildlife,  wildlife  habitat  and  specific  wildlife  features  identified  during  environmental  studies  completed  during  the 
development stage. 

landowners,  stakeholders,  agencies,  businesses,  non-governmental  organizations 

Each  greenfield  development  project  has  a  detailed  stakeholder  consultation  plan  designed  to  ensure  all  potentially 
impacted  host 
("NGOs"), 
environmental  NGOs  and  Indigenous  communities  understand  the  nature  of  the  projects,  have  multiple  and  varied 
opportunities  for  engagement  and  feedback,  and  are  able  to  engage  in  meaningful  dialogue  and  discussion  with 
TransAlta  and  its  representatives.  The  ultimate  goal  is  addressing,  solving  and  mitigating  stakeholder  or  Indigenous 
community biodiversity concerns before filing major permit applications for all of our projects.

Day-to-Day Operations
At our Alberta thermal operations, we have a Wildlife Monitoring Program designed to monitor wildlife abundance and 
species diversity in the study area over time. Based on these surveys, TransAlta has seen primarily stable or increasing 
biodiversity in the area, with various new bird species being detected over the years and incidents of vehicle collisions 
decreasing due to lower speed limit restrictions. Some animal population sizes fluctuate in the area based on weather 
conditions and available ground cover.

Our  natural  gas  operations  have  a  relatively  limited  impact  on  biodiversity.  The  facilities  are  frequently  constructed 
adjacent  to  existing  industrial  operations,  and  TransAlta  may  not  always  be  the  holder  of  the  environmental  permits. 
The land area these facilities occupy is also generally relatively small. One exception is our Sarnia cogeneration facility. 
This  facility  is  made  up  of  260  acres  of  brownfield  industrial  land,  some  of  which  contains  areas  with  tall  grasses  and 
potential  wildlife.  Care  will  be  taken  at  the  time  of  redevelopment  of  this  land  to  minimize  impact  to  species  at  risk 
through the completion of species-at-risk surveys as well as performing certain construction activities outside of nesting 
periods.  For  all  sites  that  are  under  our  environmental  scope,  we  adhere  to  all  relevant  environmental  compliance 
permits. 

At  our  hydro  facilities,  a  major  focus  is  on  reducing  the  impact  on  fish  and  fish  habitat.  We  adhere  to  provincial  and 
federal  regulations  and  operate  in  accordance  to  facility  approvals.  We  continue  to  work  towards  operational 
improvement  and  regularly  review  our  Environmental  Operational  Management  Plans  to  ensure  our  operating 
parameters are met.  

At  our  wind  and  solar  operations,  the  business  unit  has  established  the  WiSPER  (Wind  Stewardship  Planning  and 
Environmental  Reporting)  Program.  The  goal  of  the  program  is  to  provide  continuous  improvement  and  ongoing 
environmental  monitoring  programs  beyond  TransAlta’s  regulatory  requirements.  This  is  achieved  through  periodic 
audit  and  inspection  programs,  and  through  collaboration  with  industry  and  the  scientific  community  to  address 
environmental  concerns  and  impacts.  An  Operational  Environmental  Management  Plan  has  been  developed  for  each 
renewable asset to ensure that our facilities use environmentally sound and responsible practices that are based on a 
philosophy  of  continuous  improvement  of  environmental  protection  through  a  program  of  inspection,  monitoring  and 
review.

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Examples of WiSPER initiatives to support our biodiversity focus include our Avian Protection Program (installation of 
covers  to  protect  birds  from  possible  electrocution),  a  bird  and  bat  mortality  database  (records  all  injuries  and 
mortalities),  environmentally  sensitive  resource  monitoring  (monitoring  sensitive  wildlife  features  in  and  around  our 
operating wind facilities such as raptor nests and sharp-tailed grouse leks), long-term dataset collections (e.g., wildlife 
studies pre-construction and post-construction) and community wind education programs.

For further details on our environmental strategy, please refer to the Environmental Incidents and Spills discussion and 
the Land Use discussion of this MD&A. 

Land Use
The largest land use associated with our operations is for surface mining of coal. Of the three mines we have operated, 
the Whitewood mine in Alberta is completely reclaimed and the land certification process is ongoing. Our Centralia mine 
in  Washington  State  is  currently  in  the  reclamation  phase  and  we  have  adopted  a  target  to  fully  reclaim  this  mine  by 
2040. 

Our  Highvale  mine  in  Alberta  is  actively  mined  with  certain  sections  undergoing  reclamation. The  Highvale  mine  will 
close at the end of 2021 as part of discontinuing coal-fired power generation in Canada at the end of 2021. In 2020, our 
reclamation  team  updated  our  mine  reclamation  plans.  The  updated  plans  align  with  community  priorities  for  the 
reclaimed land. These reclamation plans were submitted to the regulator and we are seeking approval on these plans. 
The regulator timeline for approval can be anywhere from one to three years. Our reclamation plans at Highvale are set 
out on a life-cycle basis and include contouring disturbed areas, re-establishing drainage, replacing topsoil and subsoil, 
re-vegetation and land management. Our mining practice incorporates progressive reclamation where the final end use 
of  the  land  is  considered  at  all  stages  of  planning  and  development.  Associated  with  our  plans,  we  have  recently 
announced a target to have the Highvale mine fully reclaimed by 2046.

In 2020, the Centralia mine planted 81,000 Douglas Fir trees on land that was reclaimed in previous years. However, 
further reclamation work at our Centralia was paused in 2020 due to the COVID-19 pandemic. At our Highvale mine, 
approximately 25 acres (10 hectares) were reclaimed in 2020.

Across  our  mining  operations,  to  date  we  have  reclaimed  approximately  12,000  acres  (4,800  hectares),  which  is 
approximately 38 per cent of land disturbed. Since 1991, we have planted approximately 2.5 million trees as part of this 
reclamation work. 

Incidents and Spills
Protecting  and  minimizing  our  impact  on  the  environment  supports  healthy  ecosystems  and  mitigates  our 
environmental compliance risk and reputational risk. We maintain procedures for environmental incidents similar to our 
safety practices, with tracking, analyzing and active management to minimize occurrences. With respect to biodiversity 
management (management of ecosystems, natural habitats and life in the areas we operate) we seek to establish robust 
environmental research and data collection to establish scientifically sound baselines of the natural environment around 
our  facilities  to  ensure  we  can  accurately  evaluate  the  level  of  significance  to  biodiversity  following  an  incident.  We 
closely monitor the air, land, water and wildlife in these areas to identify and curtail potential impacts.

In  2020,  environmental  incidents  were  separated  into  two  categories:  significant  environmental  incidents  and 
regulatory non-compliance environmental incidents. We define regulatory non-compliance environmental incidents as 
events involving a non-compliance event that did not have an impact on the environment. For example, a technical issue 
with a computer system for gathering real-time data could cause us to be out of compliance with local regulation or our 
EMS,  but  there  is  no  direct  consequence  for  the  physical  environment.  All  other  events  are  captured  as  significant 
environmental  incidents  if  there  is  some  level  of  impact  to  the  environment.  In  2020,  we  recorded  six  significant 
environmental incidents (2019 - three incidents). Our six significant environmental incidents (all bird and bat strikes — 
further details below) will not cause any long-term impacts on the environment and the associated ecosystem and did 
not  trigger  any  enforcement  action.  The  Corporation  is  working  to  ensure  our  classification  is  accurate  as  a  true 
significant environmental incident is one that causes harm to the environment and poses a long-term impact on a local 
ecosystem. In 2020 we note that we did not experience an incident with such an impact. We recorded two regulatory 
non-compliance environmental incidents in 2020 (2019 – six incidents). Both of these incidents occurred at our Sarnia 
facility  and  were  related  to  an  exceedance  of  discharge  from  our  sumps  during  water  treatment.  Both  incidents  had 
negligible environmental impact.

Our  six  significant  environmental  incidents  in  2020  occurred  at  our  Summerview  (Alberta),  Antrim  (New  Hampshire) 
and Big Level (Pennsylvania) wind facilities. Four New Hampshire state-listed bat carcasses were found during the post-
construction biological survey in Antrim (three little brown bats and one eastern small-footed bat). One Pennsylvania 
state-listed  bird  (yellow-bellied  flycatcher)  was  found  during  the  post-construction  biological  survey  at  Big  Level.  A 
ferruginous hawk, a listed species in Alberta, was found during an ongoing inspection during normal operation. In each 

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case, root cause analysis investigations were performed, and we found no causal factors or root causes related to human 
behaviour or equipment failure being involved in the incidents. For all incidents, we collaborated with authorities and 
there were no enforcement actions with respect to the mortalities. Despite inconclusive findings, smart bat curtailment 
optimization is contemplated in Antrim and the biological monitoring studies continues at relevant sites.

Significant environmental incidents by business segment follow:

Year ended Dec. 31

Hydro

Wind & Solar

North American Gas

Australia Gas

Alberta Thermal

Centralia

Corporate and Energy Marketing

Total significant environmental incidents

Regulatory non-compliance environmental incidents by business segment follow:

Year ended Dec. 31

Hydro

Wind & Solar

North American Gas

Australia Gas

Alberta Thermal

Centralia

Corporate and Energy Marketing

Total regulatory non-compliance environmental incidents

Some examples of mitigation measures TransAlta has taken include: 

2020

2019

2018

—

6

—  

—  

—  

—  

—

6

—  

3  

— 

— 

— 

— 

—

3

— 

— 

— 

— 

1

— 

—

1

2020

2019

2018

—  

—

2  

—  

—  

—  

—  

2

— 

1  

2 

— 

2 

1 

— 

6

— 

— 

2 

— 

2

2 

—

6

▪

▪

▪

▪

Installation of artificial nest platforms to increase breeding opportunities for endangered ferruginous hawks in 
southern Alberta;
Installation of bluebird nest boxes to increase breeding habitat for this sensitive species found at some of our 
southern Alberta wind facilities;
Bobolink  Management  Plan  at  the  Wolfe  Island  wind  facility  –  creation  of  50  acres  of  breeding  habitat  for 
bobolink (a sensitive bird species in Ontario) to offset the potential impacts of the Wolfe Island wind facility on 
this species; and
Implementing  operational  bat  curtailment  at  the  Antrim,  Big  Level,  Summerview  and  Kent  Breeze  wind 
facilities  during  the  fall  bat  migration  period  (July  to  September)  to  reduce  bat  mortality  at  these  sites  by 
increasing the cut-in speed. 

For  2021,  we  are  removing  our  target  for  environmental  incidents.  This  is  because  we  do  not  tend  to  experience 
environmental incidents that have a large or lasting impact on the environment and an ecosystem, and we believe it is 
prudent to instead focus on other environmental areas that are more material for the Corporation. This will not change 
our  internal  focus  on  mitigation  of  environmental  incidents.  We  continue  to  track  and  manage  all  environmental 
incidents, including all non-reportable (minor) environmental incidents, which helps us identify what causes an incident. 
Understanding the root cause of incidents helps with incident prevention planning and education. 

Regarding  spills  and  releases,  typical  spills  that  could  occur  at  our  operation  sites  are  hydrocarbon-based.  Spills 
generally  happen  in  low  environmental  impact  areas  and  are  almost  always  contained  and  fully  recovered.  It  is 
extremely  rare  for  large  spills  to  occur.  Efforts  are  placed  on  providing  a  quick  response  to  all  spills  to  ensure 
assessment, containment and recovery of spilled materials result in minimal risk to the environment. 

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There is a potential that ash ponds associated with our coal facilities could fail. The probability of this occurring is low, 
but the impact could be significant. We follow applicable environmental regulations with respect to our ash ponds and 
satisfy  ourselves  that  management  is  adequate  given  the  robust  regulations  in  the  jurisdictions  where  we  operate. 
Management  includes  periodic  inspections  and  appropriate  mitigation  if  issues  are  uncovered.  An  inspection  in  2020 
noted  cracks  in  one  of  our  ponds.  In  response,  a  restoration  plan  was  developed  to  fix  the  issue.  The  total  cost  of 
mitigation was $1 million. 

The estimated volume of spills in 2020 was 4 m3 (2019 - 530 m3). Spill volumes in 2019 were higher due to a 527 m3 spill 
at  our  Sarnia  cogeneration  facility.  This  was  not  a  traditional  product  spill  and  was  a  wastewater  effluent  limit 
exceedance from a sump. There was no enforcement action associated with this spill.  

Weather
Abnormal  weather  events  can  impact  our  operations  and  give  rise  to  risks.  Due  to  the  nature  of  our  business,  our 
earnings are sensitive to weather variations from period to period. Variations in winter weather affect the demand for 
electrical  heating  requirements.  Variations  in  summer  weather  affect  the  demand  for  electrical  cooling  requirements. 
These  variations  in  demand  translate  into  spot  market  price  volatility.  Variations  in  precipitation  also  affect  water 
supplies,  which  in  turn  affect  our  hydroelectric  assets.  Also,  variations  in  sunlight  conditions  can  have  an  effect  on 
energy production levels from our solar facility. Variations in weather may be impacted by climate change resulting in 
sustained  higher  temperatures  and  rising  sea  levels,  which  could  have  an  impact  on  our  generating  assets.  Ice  can 
accumulate on wind turbine blades in the winter months. The accumulation of ice on wind turbine blades depends on a 
number  of  factors,  including  temperature  and  ambient  humidity.  Accumulated  ice  can  have  a  significant  impact  on 
energy  yields  and  could  result  in  the  wind  turbine  experiencing  more  downtime.  Extreme  cold  temperatures  can  also 
impact  the  ability  of  wind  turbines  to  operate  effectively  and  this  could  result  in  more  downtime  and  reduced 
production. In addition, climate change could result in increased variability to our water and wind resources.

Our  generation  facilities  and  their  operations  are  exposed  to  potential  damage  and  partial  or  complete  loss  resulting 
from  environmental  disasters  (e.g.,  floods,  high  winds,  fires  and  earthquakes),  equipment  failures  and  other  events 
beyond  our  control.  Climate  change  can  increase  the  frequency  and  severity  of  these  extreme  weather  events.  The 
occurrence  of  a  significant  event  that  disrupts  the  operation  or  ability  of  the  generation  facilities  to  produce  or  sell 
power for an extended period, including events that preclude existing customers from purchasing electricity, could have 
a material adverse effect. Our generation facilities could be exposed to effects of severe weather conditions, natural or 
man-made disasters and other potentially catastrophic events such as a major accident or incident at our sites. In certain 
cases,  there  is  the  potential  that  some  events  may  not  excuse  us  from  performing  our  obligations  pursuant  to 
agreements with third parties. The fact that several of our generation facilities are located in remote areas may make 
access for repair of  damage  difficult.  Please refer to the Governance and Risk Management section of this MD&A  for 
further discussion on weather-related risks.

During  the  past  three  years,  we  have  experienced  no  significant  impacts  to  annual  financial  results  due  to  deviations 
from expected weather patterns.

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We  believe  in  open  and  transparent  reporting  on  material  impacts  relating  to  climate  change.  Our  climate  change 
reporting  is  structured  as  per  guidance  from  the  Financial  Stability  Board's  TCFD  recommendations.  The  following 
Progressive Environmental Stewardship: Climate Change Management
highlights our management, performance and leadership of impacts related to climate change. 

▪

▪

TransAlta Climate Change Action - Highlights

▪

The  GSSC  includes  in  its  mandate  that  it  will  review  guidelines  and  practices  relating  to  environmental 
protection and the Corporation's plans with respect to environmental impact;
Our strategy involves moving away from GHG-intensive coal and achieving a 100 per cent mix of renewables 
and natural gas by the end of 2025;
Our  business  is  showing  resilience  to mitigation  of  global  warming  by  reducing  GHG  emissions  —  we  have  a 
target to reduce annual emissions by 19.7 million tonnes of CO2e by 2030 over 2015 levels and a new goal to 
be carbon neutral by 2050. Since 2015, we have reduced our annual emissions by 15.8 million tonnes of CO2e 
or approximately 80 per cent of required GHG reductions to meet this target;

▪

▪ We have reduced our annual emissions by approximately 25 million tonnes of CO2e since 2005, which is a 61 
per cent reduction over the time period and highlights our decarbonization track record - this is the equivalent 
annual GHG emissions of a small country;
As a leader in North American renewable energy, and on-site generation development and production, we are 
well  positioned  to  build  renewable  energy  facilities  and  lower-carbon  gas  facilities  to  support  customer 
sustainability goals to decarbonize; and
In 2020, CDP (the global disclosure system for environmental impacts known formerly as Carbon Disclosure 
Project)  recognized  TransAlta  with  an  A-  score,  ranking  the  Corporation  among  industry  leaders  on  climate 
change management.

▪

The  highest  level  of  oversight  on  business  impacts  related  to  climate  change  is  at  our  Board  level,  specifically  by  the 
GSSC  and  the  AFRC.  Macro  issues  and  opportunities  such  as  coal  GHG  emissions  and  the  phase-out  of  coal  power 
Climate Change Governance
generation,  cost-competitiveness  of  renewable  energy  and  customer  preferences  toward  lower  carbon  energy  have 
been at the forefront of strategic discussions with our executive and Board. These deliberations resulted in our actions 
to move away from coal, establish 2030 and 2050 GHG emissions reduction targets and grow our generation capacity 
with renewable energy and gas. 

The GSSC has oversight of climate-related issues. Meeting on a quarterly basis, the GSSC's charter includes "monitoring 
and  assessing  climate  change  risks  and  compliance  with  associated  legislation  and  public  reporting."  The  charter  also 
directs that the GSSC "at least annually, review guidelines and practices relating to environmental protection, including 
the  mitigation  of  pollution  and  climate  change;  consider  whether  TransAlta’s  policies  and  practices  relating  to  the 
environment  are  being  effectively  implemented,  and  discuss  and  advise  regarding  the  development  of  policies  and 
practices regarding climate change, greenhouse gas and other pollutants."

In addition to the GSSC, climate risks are reviewed through the AFRC. For example, climate policy considerations are 
factored into decision-making with respect to conversion of coal facilities to gas facilities. In addition, many of our new 
projects,  including  clean  energy  projects,  are  reviewed  by  other  committees  of  the  Board  and  climate  risk  and 
opportunity  is  factored  into  those  committee  deliberations.  As  a  result,  climate  change  related  capital  expenditures, 
acquisitions and budgets are also reviewed at the Board level on a case-by-case basis. 

Notably,  five  of  our  Board  members  have  identified  Environment  and  Climate  Change  as  being  among  their  top  four 
relevant competencies. We have noted this in our skills matrix section of our 2020 Management Proxy Circular on page 
33.

The highest level of oversight on climate change at our executive level is with the President and CEO. Climate change 
related  risks  are  monitored  and  actively  managed  through  our  TransAlta-wide  risk  management  processes.  Climate 
change  risks  and  opportunities  are  identified  and  reviewed  at  the  Board  level  and  all  levels  of  the  Corporation.  The 
business units and corporate functions work closely together and flow risks and opportunities upwards to the executive 
and the Board. Risks and opportunities are reviewed by our CEO and executive team quarterly and are reported to the 
GSSC and the AFRC.  

A  significant  component  of  executive  compensation  is  tied  to  achieving  our  strategic  goals,  which  include  growing 
renewable  energy,  reducing  GHG  emissions  through  our  conversion  to  gas  transition  and  supporting  our  customer 
sustainability  goals  to  decarbonize  through  on-site  low  carbon  generation.  Our  corporate  executive  annual  incentive 
plans (short-term incentive or annual bonus and long-term share incentives) are linked to TransAlta's performance (i.e., 

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"pay for performance"). These incentives are linked to execution of strategic goals and our compensation philosophy is 
designed to drive the right actions to achieve our strategic goals. The long-term incentive plan for the period 2018 to 
2020 included a strategic goal to Transition to Renewable Energy. This goal was measured against the performance of 
the  Corporation,  which  included:  advancing  and  executing  our  conversion  to  gas  (which  results  in  significant  GHG 
reductions);  deliver  growth  in  our  renewables  fleet  (zero  or  very  low  carbon  assets);  expand  our  presence  in  the  US 
renewables  market  (zero  or  very  low  carbon  assets);  advance  and  grow  our  on-site  generation  and  cogeneration 
business (decentralized and low carbon/high energy-efficiency assets); continue to improve our already strong financial 
position; and remain disciplined with our capital investment strategy. As such, our incentive program is tied to reducing 
GHG emissions and climate change management. 

TransAlta,  and  the  electricity  sector  in  general,  are  at  the  forefront  of  reducing  GHG  emissions,  pursuing  innovative 
lower-carbon  and  zero-carbon  solutions  (e.g.,  renewable  energy,  natural  gas,  distributed  power  generation,  energy 
Climate Change Strategy
storage,  etc.)  and  are  showing  a  path  to  resiliency  in  a  low-carbon  world.  Our  investments  and  growth  in  renewable 
energy  are  highlighted  by  our  diverse  portfolio  of  renewable  energy-generating  assets.  We  currently  operate 
approximately  2,500  MW  of  hydro,  wind  and  solar  power.  In  2020,  we  completed  construction  and  commercial 
operation of an additional 136 MW (net 67 MW) of wind generation in the US (2019 - 119 MW). Today, our diversified 
renewable fleet makes us one of the largest renewable producers in North America, one of the largest producers of wind 
power in Canada and the largest producer of hydro power in Alberta. 

In  addition  to  climate  resiliency,  TransAlta  remains  focused  on  reliability  of  electricity  supply  and  affordability  for 
customers. To support our own path to reduce our GHG footprint and ensure climate resiliency, we have a corporate 
goal to reduce our GHG emissions by 60 per cent by 2030 over 2015 levels, while growing renewable energy and natural 
gas.  We  believe  natural  gas  plays  a  strong  role  in  supporting  grid  reliability  and  supporting  customer  goals  of 
affordability. In 2021, we have adopted a target to be carbon neutral by 2050. We believe carbon neutrality provides 
flexibility  as  we  shape  our  strategy  over  the  coming  decades  and  we  believe  our  clean  electricity  strategy  has  us  well 
positioned to support us achieving this.

In 2021, we are conducting scenario analysis to further inform our understanding of risks, opportunities, technologies 
and  pathways  with  respect  to  a  number  of  future  climate  scenarios.  This  process  will  help  inform  us  as  we  evaluate 
strategic GHG reduction pathways with respect to achieving our target of carbon neutrality by 2050. This target aligns 
us with efforts in the countries where we operate and broader global efforts under the Paris Agreement.

All  our  business  units  and  operations  consistently  seek  energy-efficiency  improvements,  opportunities  to  integrate 
clean  combustion  technologies  and  development  of  emissions  offset  portfolios  to  achieve  emissions  reductions  at 
competitive  costs.  We  seek  investment  in  climate  change  related  mitigation  solutions,  such  as  renewable  energy 
development,  where  we  can  maximize  value  creation  for  our  shareholders,  local  communities  and  the  environment. 
Conversion of our large coal fleet to gas-fired generation highlights this approach, which will allow us to run our assets 
longer  than  the  federally  mandated  coal  retirement  schedule.  Our  goals  for  undertaking  such  actions  are  to  enhance 
value for our shareholders, ensure low-cost and reliable power, and reduce our GHG footprint.

With  respect  to  our  customers,  we  note  that  we  are  shifting  our  product  offering  from  a  GHG-intensive  product  to  a 
low-carbon  product  to  meet  the  need  to  decarbonize  and  mitigate  associated  societal  risks,  but  also  to  meet  the 
changing  goals  of  our  customers.  We  continue  to  build  renewable  projects  for  customers  seeking  to  meet  their  own 
sustainability goals, such as carbon neutrality on Scope 2, RE100 goals or net zero. We continue to support customers 
with on-site power-generation goals, where collectively there is an opportunity to reduce GHG impacts through on-site 
cogeneration, where power and steam production replace existing higher GHG-intensive boilers. Our conversion of coal 
facilities to gas will significantly reduce the GHG intensity of the Alberta grid, supporting Scope 2 emission reductions 
for our customers and Alberta commercial and industrial loads.

Another way we can contribute to our customers’ sustainability goals is through the use of environmental attributes. We 
have the ability to generate, trade, purchase and sell environmental attributes that include Alberta EPCs, Alberta carbon 
offsets,  RECs  and  emission  offsets.  Production  from  renewable  electricity  in  2020  resulted  in  avoidance  of 
approximately  2.9  million  tonnes  of  CO2e  for  our  customers,  which  is  equivalent  to  removing  over  630,000  vehicles 
from North American roads over the same year. As previously noted, we seek to commoditize carbon through trading 
and the generation and sale of environmental attributes from renewable energy. Annual revenue generation from the 
sale of environmental attributes (Alberta carbon offsets and RECs) in 2020 was $25 million. 

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Climate  change  risks  are  monitored  and  actively  managed  through  our  TransAlta-wide  risk  management  processes. 
Although we do not have a formal process to review specific climate change risk, climate change risks and opportunities 
Climate Change Risk Management
are identified at the Board level, executive and management level, business unit level (coal, gas, wind, solar and hydro) 
and  through  our  corporate  function  (e.g.,  government  relations,  regulatory,  emissions  trading,  sustainability, 
commercial,  customer  relations  and  investor  relations).  The  business  units  and  corporate  functions  work  closely 
together  and  provide  information  on  risks  and  opportunities  to  management,  the  executive  team  and  the  Board.  One 
area that is constantly monitored is climate policy, including the impacts on cost, growth and compliance. 

Climate change risks at the asset or business unit level are identified through our EMS, asset management function and 
systems,  our  energy  and  trading  business,  active  monitoring,  active  participation/communication  with  stakeholders, 
liaison  with  our  corporate  function,  active  participation  in  working  groups  and  more.  All  identified  material  risks  are 
added  to  our  Enterprise  Risk  Management  risk  register.  These  risks  are  assessed  and  scored  based  on  likelihood  and 
impact  (what  could  have  "substantive  financial  impact,"  "strategic  impact,"  "stakeholder  or  reputational  impact"  or 
"environment, health and safety impact"). Risks are not considered in isolation. Major risks are the focus of management 
response and mitigation plans.

Our climate change risks are divided into two major categories as per guidance from the TCFD, which include: (1) risks 
related to the transition to a lower-carbon economy and (2) risks related to the physical impacts of climate change. 

We  seek  to  understand  the  impact  on  our  business  as  the  world  shifts  to  a  lower-carbon  society.  We  participate  in 
1.  Transition Risks to a Lower-Carbon Economy
ongoing decisions related to climate policy and regulation. 

Ongoing and Recently Passed Environmental Legislation
Changes in current environmental legislation do have, and will continue to have, an impact upon our operations and our 
Policy and Legal Risks
business. For further details, please refer to the Governance and Risk Management section of this MD&A.

Canadian Federal Government 
Federal Climate Plan
On Dec. 11, 2020, the Government of Canada released its “A Healthy Environment and a Healthy Economy” climate plan 
that  outlines  how  the  federal  government  intends  to  use  policies,  regulations  and  funding  to  achieve  Canada’s  Paris 
Agreement  emission  reduction  target  of  30  per  cent  reduction  from  2005  greenhouse  gas  emission  levels.  The  three 
major aspects of the plan include increased carbon prices and obligations, increased funding for clean technology and 
the implementation of the Clean Fuel Regulation ("CFR"). The government stated that it will consult with provinces and 
industry regarding many elements of the plan so significant uncertainty remains regarding the final form of the related 
regulations and other initiatives. 

Key proposed elements of the federal plan:

▪

▪
▪

▪

Carbon price for the carbon tax and the larger emitters program is to rise $15 per tonne CO2e per year from 
2023 until reaching $170 per tonne by 2030;
Carbon obligations to rise as performance standards (benchmarks) under large emitter regulations tighten;
Over  $10  billion  of  funding  will  be  made  available  for  the  energy  transition,  including  support  for  electric 
vehicles and clean energy development to battery storage and improved grid technology; and
Implementation of the CFR on liquid fuels, but no CFR obligations for gaseous and solid fuels.

TransAlta intends to continue to engage with governments to mitigate risks and identify opportunities within the new 
federal plan.

Clean Fuel Regulation
In 2016, the Canadian federal government announced plans to consult on the development of a CFR to reduce Canada’s 
GHGs through the increased use of lower carbon fuels, energy sources and technologies. The objective of the regulation 
is to achieve 30 million metric tonnes of annual reductions in GHG emissions by 2030. 

On  Dec.  19,  2020,  the  Canadian  federal  government  published  its  draft  version  of  the  CFR  with  the  accompanying 
supporting documents. As a result of gaseous fuels no longer being regulated by the CFR, the CFR will have a limited 
impact on the electricity sector. Consultation on the regulation will conclude on March 4, 2021. The CFR is scheduled to 
be finalized in December 2021 and come into force on Dec. 1, 2022.

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Federal Carbon Pricing on GHGs
On  June  21,  2018,  the  Canadian  federal  Greenhouse  Gas  Pollution  Pricing  Act  ("GGPPA")  came  into  force.  Under  the 
GGPPA,  the  federal  government  implemented  a  national  price  on  GHG  emissions.  On  Jan.  1,  2019,  the  GGPPA's 
backstop  mechanisms  came  into  force  in  provinces  and  territories  that  did  not  have  an  independent  carbon  pricing 
program or where the existing program was not deemed equivalent to the federal system. The backstop mechanism has 
two components: a carbon levy for small emitters ("Carbon Tax") and regulation for large emitters called the Output-
Based  Pricing  Standard  ("OBPS").  The  Carbon  Tax  sets  a  carbon  price  per  tonne  of  GHG  emissions  related  to 
transportation fuels, heating fuels and other small emission sources. 

As noted above, in the "Healthy Environment and a Healthy Economy" plan, the federal government proposed escalating 
the national price on carbon by $15 per tonne each year from 2023 until it reaches $170 per tonne in 2030.   

The  OBPS  regulates  large  emitters'  carbon  intensity  by  setting  a  sectoral  benchmark  of  GHG  emissions  per  unit  of 
production  (e.g.,  tonnes  CO2e/MWh)  for  electricity  generators.  Emitters  exceeding  the  benchmark  generate  carbon 
obligations and those emitters that perform below the benchmark generate EPCs. Emitters can meet their obligations 
by  reducing  their  emission  intensity,  buying  carbon  credits  from  others  (offsets  or  EPCs)  or  making  compliance 
payments to the government.

As  discussed  in  the  provincial  sections  below,  the  OBPS  does  not  apply  in  Alberta  and  Ontario  is  in  the  process  of 
transitioning out of the OBPS and into a provincial industrial carbon pricing system. As a result, TransAlta's Canadian 
thermal  fleet  will  be  regulated  by  provincial  systems  moving  forward.  However,  the  federal  government  compares 
provincial carbon pricing systems against the OBPS when deciding whether provinces have achieved equivalency with 
the federal government's carbon price under the GGPPA. On Feb. 12, 2021, the federal government began planning for 
a  2022  review  of  the  OBPS  and  other  aspects  of  the  GGPPA.  TransAlta  will  actively  engage  in  this  process  as  any 
changes to the OBPS will influence provincial carbon pricing systems in the future. 

Gas Regulation
On Dec. 18, 2018, the federal government published the Regulations Limiting Carbon Dioxide Emissions from Natural Gas-
fired Generation of Electricity. Under the regulations, new and significantly modified natural-gas-fired electricity facilities 
with  a  capacity  greater  than  150  MW  must  meet  a  standard  of  420  tonnes  CO2e/GWh  to  operate.  For  units  with  a 
capacity between 25 MW and 150 MW, their standard was set at 550 tonnes CO2e/GWh. Facilities with a capacity less 
than 25 MW have no standard.

Under the regulations, conversions to gas will also eventually have to meet a standard of 420 tonnes CO2e/GWh. If the 
first-year performance test after conversion meets certain emission standards it will not have to meet the 420 tonnes 
CO2e/GWh standard for several additional years past the end of its useful life. 

As part of the Healthy Environment and a Healthy Economy Plan, the federal government signalled an interest in exploring 
a new emissions performance standard for the Canadian electricity sector. There are few details available regarding the 
potential new standard and TransAlta is engaging the federal government to understand the intent of the proposal. 

Coal Regulation
On  Dec.  18,  2018,  amendments  to  the  Reduction  of  Carbon  Dioxide  Emissions  from  Coal-Fired  Generation  of  Electricity 
Regulations came into force under the Canadian Environmental Protection Act, 1999. The amended regulations will require 
coal units to meet an emission level of 420 tonnes CO2e/GWh by the earlier of end-of-life under the 2012 regulations or 
Dec. 31, 2029.

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Alberta
Large Emitter Greenhouse Gas Regulations
On  Jan.  1,  2020,  the  Government  of  Alberta  replaced  the  previous  Carbon  Competitiveness  Incentive  Regulation 
("CCIR")  with  a  new  regulation  called  the  Technology  Innovation  and  Emissions  Reduction  ("TIER")  Regulation.  For  the 
electricity sector, there were negligible changes between CCIR and TIER with renewable facilities continuing to receive 
crediting.  The  carbon  price  for  TIER  in  2021  will  be  $40/tonnes  CO2e  aligned  with  the  GGPPA  requirements.  The 
performance standard benchmark remained at 0.370 tonnes CO2e/MWh. A review of TIER is not expected until 2023.

Facilities with emissions above the set benchmark comply with TIER by: a) paying into the TIER Fund (a government-
controlled fund that invests in emissions reduction in the province) at the current carbon price; b) making reductions at 
their facility; c) remitting EPCs from other facilities; or d) remitting emission offset credits. 

As  required  by  the  GGPPA,  the  Alberta  government  files  annual  reports  on  TIER  program  details  with  the  federal 
government. The federal government reviewed TIER and found it compliant with the GGPPA for 2021. The Corporation 
will  continue  to  receive  offsets  and  EPCs  for  its  renewable  facilities  under  TIER,  ensuring  expected  revenues  are 
realized.

British Columbia
Beginning  April  1,  2018,  the  British  Columbia  government  increased  its  carbon  tax  price  to  $35  per  tonne  CO2e  and 
committed  to  raise  the  price  $5  per  year  until  it  reaches  $50  per  tonne  in  2021.  Upon  review,  the  government  has 
determined that the carbon tax rate will remain at its current level of $40 per tonne CO2e until April 2021, when it will 
increase from $40 to $45 per tonne CO2e. The carbon tax will increase to $50 per tonne CO2e in April 2022. The tax has 
a negligible cost impact for the Corporation as the tax applies primarily to our transportation fuel use, which is negligible  
in BC.

Ontario
Large Emitter Greenhouse Gas Regulations
On July 4, 2019, the Government of Ontario released its final regulations for the provincial Greenhouse Gas Emissions 
Performance Standards ("EPS"). On Sept. 21, 2020, the federal government accepted the Ontario government's EPS as 
meeting the requirements of the GGPPA. In December 2020, the Ontario government published amendments to align 
the  EPS  with  the  GGPPA  requirements.  The  Ontario  government  also  announced  its  intention  to  transition  from  the 
OBPS to the EPS starting on Jan. 1, 2021. Therefore, Ontario's large emitters were covered by the OBPS for 2019 and 
2020 compliance years and will subsequently be covered by the EPS.  

This requires TransAlta's Ontario natural-gas-fired assets to track and make compliance filings annually and to meet the 
carbon  emission  obligations  of  the  applicable  government.  There  are  minor  differences  between  the  EPS  and  OBPS. 
Compliance  requirements  will  be  met  through  payments  and  alternative  compliance  units  under  the  OBPS  and  EPS. 
However, change-of-law provisions in the contracts with Sarnia, Windsor and Ottawa allow TransAlta to flow carbon-
regulation-related costs to customers, resulting in negligible cost increases to the Corporation.

Michigan
Michigan  has  air  permit  requirements  related  to  the  Clean  Air  Interstate  Regulation  with  respect  to  NOx  and  SO2 
emissions.  There  are  currently  no  GHG  emission  compliance  requirements  other  than  to  report  these  emissions 
annually.  The  Ada  cogeneration  facility  is  in  compliance  with  all  environment  requirements  and  there  have  been  no 
recent changes to regulations that would increase costs at the facility. 

Washington
In  2010,  the  Washington  Governor's  office  and  State  Department  of  Ecology  negotiated  agreements  with  TransAlta 
related  to  the  operation  of  Centralia’s  two  coal-fired  electricity  generating  units.  TransAlta  agreed  to  retire  its  two 
Centralia  coal  units:  one  in  2020  and  the  other  in  2025.  This  agreement  is  formally  part  of  the  state’s  climate  change 
program.  We  currently  believe  that  there  will  be  no  additional  GHG  emissions  regulatory  burden  on  Centralia  given 
these commitments. The related TransAlta Energy Transition Bill was signed into law in 2011 and provides a framework 
to transition from coal to other forms of generation in the State of Washington.

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Management’s Discussion and Analysis

Massachusetts
The  Solar  Renewable  Electricity  Credit  I  ("SREC  I")  program  carved  out  from  Massachusetts’  Renewable  Portfolio 
Standard ("RPS") an initial quantity of 400 MW from small solar facilities of 10 MW or less. The initial SREC I program 
size was expanded and replaced by a lower-valued SREC II program. In 2018, the solar incentive program evolved into 
the current Solar Massachusetts Renewable Target Program that further reduced the incentive levels.

The initial SREC I program’s volume target was achieved, and qualified projects under SREC I continue to generate SREC 
I credits for their first 10 years post-commercial operation date. SREC I facilities then generate Class 1 RECs under the 
Massachusetts RPS for the remainder of their operational life.

Under Massachusetts' net metering program, qualified facilities connect with the local utility and generate net metering 
credits. Net metering credits offset the delivery, supply and customer charges and can be sold to customers from remote 
or on-site qualifying facilities. In 2016, the net metering program was updated to reduce the value of the net metering 
credits by reducing the offset to only energy costs. New projects are impacted once the net metering program volume 
reaches 1,600 MW. Existing facilities were grandfathered and continue to receive the full, original cost offset treatment 
for a period of 25 years from initial commercial operation.

Le  Nordais  receives  value  from  the  sale  of  RECs  into  the  New  England  RPS  markets.  Massachusetts  has  proposed  a 
lower  compliance  cost  ceiling  on  its  RPS  standard  that  would  effectively  cap  the  value  of  RECs.  This  could  have  a 
negative impact on Le Nordais' REC sales price. The change in regulation is still being considered and has not yet been 
put into force.

Australia
On  Dec.  13,  2014,  the  Australian  government  enacted  legislation  to  implement  the  Emissions  Reduction  Fund  (the 
"ERF").  The  AU$2.55-billion  ERF  is  the  centrepiece  of  the  Australian  government's  policy  and  provides  a  policy 
framework to cut emissions by five per cent below 2000 levels by 2020 and 26 to 28 per cent below 2005 emissions by 
2030.  The  ERF's  safeguard  mechanism,  commencing  from  July  1,  2016,  is  designed  to  ensure  emissions  reductions 
purchased  by  the  Australian  government  through  the  ERF  are  not  displaced  by  significant  increases  in  emissions 
elsewhere  in  the  economy.  The  ERF  and  its  safeguard  mechanism  provide  incentives  to  reduce  emissions  across  the 
Australian economy.

In addition, on June 23, 2015, the federal Australian government also reformed the Renewable Energy Target ("RET") 
scheme.  The  RET  is  designed  to  add  at  least  33,000  GWh/year  of  renewable  sources  by  2020.  The  Australian 
government  has  advised  there  are  now  sufficient  projects  approved  to  meet  and  exceed  the  2020  target  of  33,000 
GWh/year of additional renewable electricity. The annual target will remain at 33,000 gigawatt hours until the scheme 
ends in 2030. This would result in approximately 23.5 per cent of Australia's electricity generation being sourced from 
renewable projects.

The ERF is not expected to have a material impact on our Australian assets. In Australia, electricity has a single sectoral 
baseline  applied  to  all  electricity  generators'  emissions  for  units  connected  to  one  of  Australia's  five  main  electricity 
grids. The electricity sector baseline has been set at 198 million tonnes CO2e per year. In the most recent high emission 
years of 2015-2016, total emissions were 179 million tonnes CO2e per year. 

If  the  baseline  is  exceeded,  then  all  large  emitter  generation  facilities  will  need  to  comply  with  individual  facility 
baselines. The electricity sector should never exceed the sectoral emission target as no new coal generation is to be built 
and  older  coal  facilities  are  retiring.  The  Corporation's  gas  facilities  will  not  be  subject  to  carbon  costs  under  current 
regulations unless changes are made.

Our  conversion  to  gas  strategy  uses  existing  infrastructure  and  applicable  technologies  (natural  gas  turbines),  which 
reduce the cost and GHG emissions related to new generation construction and material procurement.
Technology Risks

Behind-the-fence  generation  and  energy  storage  technology  are  emerging  risks  to  the  large-scale  power-generation 
model. However, they are practical solutions for some customers, and TransAlta provides these technologies in addition 
to providing services to the grid. 

We provide behind-the-fence generation or decentralized power to some of our industrial customers to supply on-site 
electricity  generation.  This  generally  can  be  in  the  form  of  a  cogeneration  system  that  provides  steam  for  industrial 
processes  in  addition  to  power,  or  a  renewable  power  system.  These  systems  can  either  be  tied  to  the  grid  or 
independent. 

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Management’s Discussion and Analysis

Battery  storage  has  the  ability  to  enable  greater  adoption  of  renewables  and  motivate  a  shift  to  a  distributed  power-
generation  model.  We  continue  to  evaluate  battery  storage  for  its  financial  viability,  while  monitoring  the  potential 
impact  battery  technology  could  have  on  natural  gas  power  generation.  TransAlta  began  commercial  operations  of 
Alberta’s  first  utility-scale  lithium-ion  battery  storage  facility,  called  WindCharger,  on  Oct.  15,  2020.  This  project  is 
unique as it uses TransAlta’s existing Summerview II wind facility to charge the battery, allowing WindCharger to be a 
truly  renewable  battery  energy  storage  system.  The  project  uses  Tesla  technology  and  the  potential  exists  for  the 
expansion of this technology. We are investigating the viability of battery storage at our various wind facility locations 
and for use in developing customer-specific energy supply solutions. 

We have demonstrated upside in growing renewables and gas-powered generation. From 2000 to 2020, we have grown 
renewables capacity from approximately 900 MW to over 2,500 MW. 

TransAlta has taken significant steps since 2005 to reduce its GHG impact and has announced a full transition off coal by 
the end of 2025. TransAlta continues to operate hydro facilities and invest in, develop and construct on-site natural gas 
Market Risks
facilities for customers and new renewable energy from wind, solar, and battery technology.

Changing  customer  behaviour,  reduced  consumption  and  associated  use  of  electricity  could  impact  the  demand  for 
electricity;  however,  we  believe  this  risk  is  mitigated  somewhat  by  the  global  trend  toward  electrification  of  the 
economy. Our low-carbon business model supports this type of future. 

Increased costs for natural gas supply due to carbon pricing can impact our operating costs. Further discussion can be 
found in the Governance and Risk Management section of this MD&A. Use of renewable resources, such as the wind and 
sun, remove associated risk related to cost of supply.

Our  Corporate  function  applies  regionally  specific  carbon  pricing,  both  current  and  anticipated,  as  a  mechanism  to 
manage future risks pertaining to uncertainty in the carbon market and as a safeguard to anticipate future impacts of 
regulatory changes on facilities. This information is directed to the business unit level for further integration. Identified 
climate change risks or opportunities and carbon pricing are recognized in the annual TransAlta long- and medium-range 
forecasting  processes.  We  capture  economic  profit  through  generation  of  environmental  attributes  (such  as  carbon 
offsets  and  RECs)  and  through  our  emission  trading  function,  which  seeks  to  commoditize  and  profit  from  carbon 
trading.

Consumer trends appear to be moving in favour of renewable and cleaner electricity. We are invested in a diversified 
mix of renewable generation as well as natural gas, as it provides vital support to the electricity system. 
Reputation Risks

As we learn more about the physical risks associated with climate change and weather, we continue to consider both 
2. 
acute and chronic risk, which could materially impact value creation from our operations.  

Physical Impact Risks of Climate Change

We are continuing to evaluate the potential impact of an acute climate change related impact to our business and/or an 
operational facility or facilities. Our facilities, construction projects and operations are exposed to potential interruption 
Acute Risks
and  damage  or  partial  or  full  loss  resulting  from  environmental  disasters  (e.g.,  floods,  high  winds,  fires,  ice  storms, 
earthquakes and public health crises, such as pandemics and epidemics). Climate change can increase the frequency and 
severity  of  extreme  weather  events.  Further  impacts  of  extreme  weather  and  climate  change  could  result  in  social 
unrest,  war  or  terrorism.  There  can  be  no  assurance  that  in  the  event  of  an  earthquake,  hurricane,  tornado,  tsunami, 
typhoon,  or  other  natural,  man-made  or  technical  catastrophe,  all  or  some  parts  of  our  generation  facilities  and 
infrastructure  systems  will  not  be  disrupted.  The  occurrence  of  a  significant  event  disrupting  the  ability  of  our  power 
generation  assets  to  produce  or  sell  power  for  an  extended  period,  including  events  that  preclude  existing  customers 
under PPAs from purchasing electricity, could have a material negative impact on our business. 

We  seek  to  mitigate  future  impact  where  relevant  with  climate  adaptation  solutions.  The  TransAlta  South  Hedland 
facility in Western Australia was built with climate adaptation in mind. The facility is designed to withstand a category 5 
cyclone.  Category  5  is  the  highest  cyclone  rating.  Floods,  which  can  occur  in  the  area,  have  been  mitigated  by 
constructing the facility above the normal flood levels. In 2019, when a category 4 cyclone hit this facility, operations 
were not impacted and we were able to continue generating electricity through the storm, despite widespread flooding 
and the shutdown of the nearby port and associated business activities. 

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Management’s Discussion and Analysis

We have not identified any chronic physical risks that could impact our operations. However, we continue to further our 
understanding and integration of climate modelling into our long-term planning.
Chronic Risks

In 2020, we estimate that 16.4 million tonnes of GHGs with an intensity of 0.67 tonnes per MWh (2019 - 20.6 million 
tonnes of GHGs with an intensity of 0.75 tonnes per MWh) were emitted as a result of normal operating activities. This 
Climate Change: Metrics and Targets
reduction of approximately 20 per cent or 4.2 million tonnes CO2e is primarily the result of co-firing with gas and lower 
production  volumes  at  our  merchant  Alberta  coal  facilities  and  lower  production  from  our  Centralia  coal  facility.  In 
2020, our renewable energy facilities also offset approximately 2.9 million tonnes of CO2e for our customers. Because 
we sell the environmental attributes (offsets and RECs) generated from our renewable energy facilities, we do not net 
this amount from our total GHGs, but it should be noted that this offset is occurring and our customers are reporting net 
GHG reductions from TransAlta's renewable energy operating activities. 

Our 2020 GHG data is reported to a number of different regulatory bodies throughout the year for regional compliance 
and, as a result, may incur minor revisions as we review and report data. Any historical revisions will be captured and 
reported in future disclosure. As per the Kyoto Protocol, GHGs include carbon dioxide, methane, nitrous oxide, sulphur 
hexafluoride, nitrogen trifluoride, hydrofluorocarbons and perfluorocarbons. Our exposure is limited to carbon dioxide, 
methane, nitrous oxide and a small amount of sulphur hexafluoride. The majority of our estimated GHG emissions result 
from  carbon  dioxide  emissions  from  stationary  combustion  from  coal  and  natural-gas-powered  generation.  Emissions 
data  has  been  aligned  with  the  “Setting  Organizational  Boundaries:  Operational  Control”  methodology  set  out  in  The 
Greenhouse  Gas  Protocol:  A  Corporate  Accounting  and  Reporting  Standard  developed  by  the  World  Resources 
Institute  and  the  World  Business  Council  for  Sustainable  Development.  As  per  the  methodology,  TransAlta  reports 
emissions on an operation control basis, which means that we report 100 per cent of emissions at facilities in which we 
are the operator. Emissions intensity is calculated by dividing total operational emissions by 100 per cent of production 
(MWh) from operated facilities, regardless of financial ownership.

Global  warming  potentials  can  vary  with  respect  to  regional  compliance  guidance.  We  compile  our  corporate  GHG 
inventory  using  our  business  segment  GHG  calculations.  The  Clean  Energy  Regulator  in  Australia  amended  global 
warming potentials in August of 2020 and the use of global warming potentials in our Australia Gas GHG calculations 
differ from the rest of our fleet as a result of these amendments. Applying harmonized global warming potentials across 
our fleet would result in a minor variance to our overall calculated GHG totals.

The  GHG  Protocol  Corporate  Accounting  and  Reporting  Standard  classifies  a  company’s  GHG  emissions  into  three 
scopes.  Scope  1  emissions  are  direct  emissions  from  owned  or  controlled  sources.  Scope  2  emissions  are  indirect 
emissions from the generation of purchased energy. Scope 3 emissions are all indirect emissions (not included in Scope 
2) that occur in the value chain of the reporting company, including both upstream and downstream emissions. Scope 1 
emissions in 2020 were estimated to be 16.3 million tonnes CO2e and accounted for 99 per cent of emissions reported. 
All  of  our  Scope  1  emissions  (100  per  cent)  are  reported  to  national  regulatory  bodies  in  the  country  in  which  we 
operate.  This  includes:  Australia  (National  Greenhouse  and  Energy  Reporting),  Canada  (Greenhouse  Gas  Reporting 
Program) and the US (EPA). Scope 2 emissions in 2020 were estimated to be 0.1 million tonnes CO2e. We estimate our 
Scope  3  emissions  in  2020  to  be  in  the  range  of  six  million  tonnes, which  is  primarily  attributed  to  our  non-operating 
joint venture interests.

The  following  are  our  GHG  emissions  broken  down  by  business  segment,  by  Scope  1  and  2  and  by  country  in  million 
tonnes CO2e. In our business segment breakdown Hydro, Wind & Solar, Corporate and Energy Marketing are shown as 
0.0 in million tonnes, but do have minor GHG emissions.

Year ended Dec. 31

Hydro

Wind & Solar

North American Gas

Australia Gas

Alberta Thermal

Centralia

Corporate and Energy Marketing

Total GHG emissions

2020

2019

2018

0.0

0.0

1.5

1.1

7.9

5.9

0.0

16.4

0.0

0.0

1.5

1.0

10.1

8.0

0.0

20.6

0.0

0.0

1.4

1.0

12.3

6.1

0.0

20.8

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Year ended Dec. 31

Scope 1

Scope 2

Total GHG emissions

Year ended Dec. 31

Australia

Canada

United States

Total GHG emissions

2020

16.3

0.1

16.4

2020

1.1

9.4

5.9

16.4

2019

20.4

0.2

20.6

2019

1.0

11.6

8.0

20.6

2018

20.6

0.2

20.8

2018

1.0

13.7

6.1

20.8

All of our reported 2020 and historical GHG emissions are verified by Ernst & Young LLP to a level of limited assurance. 
An  assurance  statement  can  be  found  in  the  back  of  this  Integrated  Annual  Report.  In  addition,  GHG  emissions  are 
verified  to  a  level  of  reasonable  assurance  in  locations  where  we  operate  within  a  carbon  regulatory  framework.  In 
Alberta, we verify GHG emissions through the TIER program and, as a result, 51 per cent of our total Scope 1 emissions 
are  also  verified  to  a  level  of  reasonable  assurance.  Our  GHG  emissions  are  calculated  using  a  number  of  different 
methodologies depending on the technologies available at our facilities. 

We have a target to reduce 60 per cent or 19.7 million tonnes of our GHG emissions by 2030 over 2015 levels. In 2021, 
we set a new target to be carbon neutral by 2050. Our actions to reduce GHG emissions are aligned with the UN's SDGs, 
specifically "Goal 13: Climate Action." By 2030, we expect to have reduced close to 30 million tonnes over 2005 levels.

The following highlights our GHG emission reductions since 2005 and our targeted emissions in 2030 (in line with our 
GHG target). The actual GHG emissions for the Corporation in 2030 will vary from that presented below depending on, 
among other things, the growth of the Corporation, including its on-site generation business.   

Year ended Dec. 31

Total GHG emissions (million tonnes CO2e)

2030 (forecast)

12.5

2020

16.4

2005

41.9

In  2020,  TransAlta  increased  its  scoring  on  the  CDP  Climate  Change  investor  request.  Our  overall  score  was  an  A-, 
indicating  that  we  are  implementing  current  best  practices.  This  ranks  the  Corporation  among  industry  leaders  on 
climate change management and places us as ahead of most companies in North America. The average CDP score for 
our peers was a B and the average score for reporting companies in North America was a D.

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Management’s Discussion and Analysis

Engaging our workforce, developing our employees, creating a diverse and inclusive work environment and minimizing 
safety incidents are the keys to human capital value creation at TransAlta and our most material areas for management. 
Healthy, Safe, Diverse and Engaged Workplace: Human Capital Management
As of Dec. 31, 2020, we had 1,476 (2019 - 1,543) active employees. This number has decreased by four per cent from 
2019 levels, following a reduction in positions in our coal fleet as part of our conversion to gas transition.

With approximately 41 per cent of our employees being unionized, we strive to maintain open and positive relationships 
with union representatives and regularly meet to exchange information, listen to concerns and share ideas that further 
our  mutual  objectives.  Collective  bargaining  is  conducted  in  good  faith,  and  we  respect  the  rights  of  employees  to 
participate in collective bargaining.  

Our employees are central to value creation. Our corporate culture has evolved and adapted throughout our more than 
109-year  heritage.  Our  core  values  are  safety,  innovation,  sustainability,  respect  and  integrity.  These  five  core  values 
Organizational Culture and Structure 
help provide clarity for our employees and guide our behaviour and decision-making. They also provide a foundation for 
leadership, collaboration, community support, personal growth and work/life balance. Through corporate initiatives and 
support throughout all levels of leadership, we encourage our employees to maximize their potential.

Our  six-level  organizational  structure  helps  facilitate  effective  pace  and  decision-making  in  our  organization.  Our 
business  operates  as  a  business-centric  model,  with  Alberta  Thermal,  Centralia,  North  American  Gas,  Australian  Gas, 
Wind  and  Solar,  and  Hydro  as  our  six  generating  segments.  In  addition,  our  Energy  Marketing  segment  optimizes  our 
asset  fleet  and  trades  electricity  and  other  energy  commodities.  Our  Corporate  segment,  including  finance,  legal, 
administrative,  business  development  and  investor  relations  functions,  oversees  our  business  and  provides  strategic 
alignment. The Corporation also includes a Shared Services division that oversees our information technology, supply 
chain, human resources, engineering and accounting functions. The consolidation and centralization of these functions 
has  allowed  us  to  streamline,  standardize  and,  where  appropriate,  automate  these  functions  while  reducing  costs  and 
improving  service  delivery  across  the  organization.  Our  operations  portfolio  is  run  by  a  single  leadership  team,  which 
provides operational and financial synergies, enhancing our competitiveness.

TransAlta is committed to improving its internal work environment and the way that employees perceive their work and 
the Corporation. We track a broad number of factors to provide us insight into our progress and we use a third party to 
assist us in tracking our progress on an annual basis. We have made continual and notable improvements year-over-year 
and continue to target further improvements as we look forward.

The safety of our people, communities and the environment is one of our core values. At TransAlta, we operate large and 
often  complex  facilities.  The  environments  in  which  we  work,  including  Canadian  winters  and  the  Australian  outback, 
Health and Safety  
can add additional challenges to keeping our employees, contractors and visitors safe. Each year we invest significant 
resources into improving our safety performance, including positively enhancing our safety culture. At meetings of more 
than  four  people,  we  have  a  practice  of  starting  the  meeting  with  a  “safety  moment,”  which  helps  share  key  safety 
learnings across the Corporation. 

TransAlta's  management  systems  underpin  the  delivery  of  safe,  reliable  and  competitive  electricity  to  our  customers 
and partners. Our Total Safety Management System is a combination of recognized best practices in process safety, risk 
management,  asset  management,  occupational  health,  safety  and  environmental  management.  Since  expanding  our 
Occupational  Health  and  Safety  program  in  2015  to  encompass  Total  Safety,  we  have  transitioned  from  the 
development and implementation of this framework into continuous improvement, always striving to achieve our Target 
Zero  vision  to  operate  our  business  with  zero  unexpected  asset  failures  and  zero  environmental,  health  and  safety 
incidents. 

In  2020,  we  continued  to  progress  our  safety  culture  transformation  despite  an  unprecedented  and  extraordinary 
challenge due to COVID-19. Behavioural safety training tools and capabilities have been reinforced through leadership 
peer  board  sessions  and  effective  safety  interactions.  We  also  focused  on  the  development  of  tools  and  training  to 
support  hazard  identification,  including  updates  to  Field  Level  Hazard  Assessment  cards  and  a  fleet-wide  app  for 
Occupation  Hazard  Assessment.  Emphasis  on  safety  interactions,  interventions  and  positive  observations  for  both 
employees and contractors was also a particular focus in 2020.

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Management’s Discussion and Analysis

In 2020, we achieved a Total Injury Frequency ("TIF") rate of 1.67 compared to 1.12 in 2019. TIF tracks the total number 
of injuries, including minor first aids, relative to exposure hours worked. The increase in 2020 was a result of increased 
first aids across our fleet. This may have been due to an increase in contractor presence during projects/construction at 
our  Sundance  and  Windrise  facilities.  The  COVID-19  pandemic  may  also  have  had  an  impact  with  a  potential  for 
distraction while our workers adjusted to changes in their professional and personal lives.  

In addition to TIF, we are tracking Total Recordable Injury Frequency ("TRIF"). TRIF tracks the number of more serious 
injuries,  and  excludes  minor  first  aids,  relative  to  exposure  hours  worked.  TRIF  provides  us  with  the  opportunity  to 
target and monitor our significant injuries. It is also an industry-recognized safety metric and allows us to compare and 
benchmark our safety performance to that of our peers. Our TRIF result for 2020 was 0.81 compared to 0.73 in 2019. 
Minor  adjustments  were  made  to  historical  exposure  hours,  but  our  reported  injuries,  TIF  and  TRIF  reporting  did  not 
change.

Safety at TransAlta (employees and contractors)

2020

2019

2018

Lost-time injuries

Medical aids

Restricted work injuries

First aids

Total TIF injuries

Exposure hours

Total Injury Frequency (TIF)

Total Recordable Injury Frequency (TRIF)

5

9

2

17

33

5

7

3

8

23

1

12

12

23

48

  3,948,000 

  4,108,000 

  5,014,000 

1.67

0.81

1.12

0.73

1.91

1.00

TRIF is our key safety metric for 2021. TRIF includes restricted work, medical aid and lost-time injuries. We are moving 
away  from  reporting  TIF,  which  consists  of  the  same  injuries  as  TRIF,  but  also  includes  first  aid  incidents.  We  will 
continue  to  focus  on  overall  injury  reduction  (including  first  aids)  through  our  Significant  Incident  Communication 
process. This process ensures that incidents with high potential for loss are thoroughly investigated and lessons learned 
are shared across the fleet. Reporting TRIF also aligns with the SASB reporting framework. 

In  addition  to  TRIF,  we  have  also  introduced  Total  Safety  Report  Frequency  as  a  key  safety  metric  in  2021.  This  is  a 
leading indicator that measures Total Safety Reports (hazard, near miss and positive observations) per worker per year. 
Total Safety Reports are proactive in nature and demonstrate the actions we are taking to identify and prevent an injury 
or  loss  from  occurring.  In  this  way,  we  not  only  manage  incidents  if  they  do  occur,  but  methodically  work  to  prevent 
them from arising in the first place. 

As a demonstration to TransAlta’s commitment to safety, SunHills Mining LP was awarded the Safety Excellence Award 
from  the  Alberta  Mine  Safety  Association.  This  award  is  for  best  safety  performance  of  all  Alberta  mines  under  one 
million workforce hours based on 2019 performance. 

TransAlta’s  commitment  and  focus  on  excellence  in  equity,  diversity  and  inclusion  (“ED&I”)  is  found  in  our  workplace 
amongst our co-workers who at all levels advocate for the core values of equity and inclusion. We believe a strong focus 
Equity, Diversity and Inclusion
on ED&I will drive performance in innovation, improve service to our customers and positively impact the communities 
that we all live in.

In 2020, TransAlta formed a ED&I Council and empowered the Council to develop a long-term ED&I strategy. TransAlta 
also  committed  to  a  ED&I  Pledge  approved  by  our  Board  and  executive  team.  The  Pledge  embodies  our  vision  to 
strengthen our ED&I practices, and sets out four goals: (a) making our workplaces trusting places by having complex, and 
sometimes  difficult,  conversations  about  ED&I;  (b)  expanding  education  in  ED&I;  (c)  creating  best  practices  on 
meaningful ED&I initiatives; and (d) driving accountability on our ED&I initiatives by transparently reporting to our co-
workers, executive team and Board. 

In  2020,  we  also  expanded  our  ED&I  training,  offering  employees  a  platform  for  a  variety  of  training,  education  and 
awareness on ED&I such as webinars, employee engagement sessions, articles, videos and blogs. Moreover, we obtained 
diversity and inclusion data from our inaugural ED&I Census, delivered by a third party, which was sent to all employees 
to  understand  our  demographics  and  our  experiences  in  the  workplace.  These  census  results  will  inform  ED&I  action 
plans for 2021 and beyond. 

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In early 2021, we received market recognition for our ED&I efforts and were certified by Diversio for our commitment 
to  measuring,  tracking  and  improving  ED&I.  The  Diversio  assessment  and  certification  process  has  set  the  global 
standard  for  inclusion  and  being  certified  means  that  we  have  measured  and  set  targets  to  increase  diversity,  we 
regularly collect data on our co-workers’ experiences to identify bias and barriers faced by underrepresented groups, 
and we have implemented programs and policies designed to unlock specific challenges while tracking results.

Gender Diversity 
A number of case studies have highlighted the link between gender diversity and additional business value. TransAlta is 
an active supporter of gender diversity as a driver for value, but also as an ethical business practice. Our commitment to 
gender diversity in our business is evidenced by our female participation rates on both our executive team and Board. As 
of  Dec.  31,  2020,  women  made  up  43  per  cent  of  our  executive  officer  team  and  45  per  cent  of  our  Board.  These 
percentages are higher than our peers in Canada. Industry research highlights that the percentage of Board seats held 
by women from all disclosing Canadian TSX-listed companies in Canada is 21.5 per cent and the average percentage of 
women on executive teams is 16.8 per cent. 

To further support female advancement, we have set targets to: (a) maintain equal pay for women in equivalent roles, (b) 
achieve  50  per  cent  representation  of  women  on  our  Board  by  2030  and  (c)  achieve  40  per  cent  representation  of 
women among all employees by 2030. Our goal to achieve 40 per cent women across the entire workforce by 2030 is 
ambitious considering the majority of the operational roles are currently male dominated. Currently, women employees 
represent 21 per cent of all employees. 

TransAlta was once again added to the Bloomberg Gender-Equality Index in 2021. Inclusion in the index recognizes our 
comprehensive  investment  in  workplace  gender  equality  and  our  commitment  to  driving  progress  by  developing 
inclusive  policies  and  disclosing  data  using  Bloomberg’s  gender  reporting  framework.  In  2020,  TransAlta  was  also 
recognized on the Globe and Mail’s Women Lead Here inaugural survey and was included as an honoree for executive 
gender diversity in Canada.

Employee Retirement Savings Programs
TransAlta  is  an  attractive  employer  in  all  three  countries  in  which  we  operate.  We  provide  compensation  to  our 
Employee Retention & Recognition
employees at levels that are competitive in relation to their respective location. We strive to be an employer of choice 
through  our  total  rewards  programs,  which  include  various  incentive  plans  designed  to  align  performance  with  our 
annual and longer-term targets, as determined annually by the Board. 

Retirement  savings  plans  are  an  example  of  rewards  we  provide.  We  have  registered  pension  and  savings  plans  in 
Canada and the US. The plans cover substantially all employees of the Corporation, its domestic subsidiaries and specific 
named  employees  working  internationally.  These  plans  have  defined  benefit  (“DB”)  and  defined  contribution  (“DC”) 
options,  and  in  Canada  there  is  an  additional  non-registered  supplemental  pension  plan  (“SPP”)  for  members  whose 
annual earnings exceed the Canadian income tax limit. The DB SPP was closed as of Dec. 31, 2015, and a new DC SPP 
commenced for executive members hired after Jan. 1, 2016. The Corporation's executive officers as of Dec. 31, 2015, 
were grandfathered in the DB SPP. 

The Canadian and US DB pension plans are closed to new entrants, with the exception of the Highvale mine (SunHills) 
pension plan acquired in 2013. The US DB pension plan was frozen effective Dec. 31, 2010. The plans are funded by the 
Corporation in accordance with governing regulations and actuarial valuations. In addition, in Canada, we provide some 
optional  plans  for  employees  to  enhance  their  financial  wellness  and  retirement  savings,  with  group  RRSP  and  TFSA 
plans.  

In  Australia,  employees  can  nominate  a  superannuation  fund  for  superannuation  contributions.  The  Australian 
superannuation scheme is compulsory for employers with contributions required at a rate set by the government. 

Other Employee Benefit Programs
TransAlta provides competitive benefit programs for most of our employees (options are dependent on the countries in 
which we operate). We also provide benefit programs based on negotiated union agreements in certain locations. Our 
flexible benefit plans provide employees and their families with choices of coverage including, among others, extended 
health, dental, vision, life insurance, critical illness, accident, disability and a health spending account.  

In 2020, we added Telehealth benefits that include employee access to virtual doctor visits, remote chronic condition 
management, and online or telephone access to medical support and information. We provide other health and dental 
benefits for  disabled members and retired members, typically up to the age of 65. The Canadian retiree benefits  plan 
was closed for all new hired employees as of March 1, 2017.

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In  2020,  the  BOLT  Awards  were  launched  to  provide  timely  rewards  and  recognition  for  work  on  transformational 
initiatives and project work, as well as to recognize above-and-beyond performance. The BOLT Awards have acted as an 
umbrella  program  whereby  individual  performance  can  be  recognized  in  one  place,  frequently  and  in  a  consistent 
manner.

On an annual basis, TransAlta recognizes our top achievements through the President’s Awards. During 2020, we added 
an additional award for Leadership Excellence. This  award  recognizes  a  people leader who consistently demonstrates 
TransAlta’s values in their decision-making and actions, has a bias to action that achieves key business outcomes and is 
recognized by their team as a trusted advisor and mentor. 

TransAlta’s focus on organizational health resulted in top quartile results in 2020 benchmarked against 823 surveys and 
a total of 2.8 million respondents. This was accomplished by identifying eight priority practices and incorporating those 
practices into all facets of the organization.

Lastly, a Remote Work Program was developed in 2020 to provide employees with alternative permanent remote work 
options. This program allowed eligible employees to choose between working from home or within a TransAlta location.     

Talent  and  employee  development  is  viewed  as  a  key  pillar  of  organizational  health.  Investing  in  our  employee 
development  enhances  employees’  skills  and  improves  productivity  and  engagement.  This  contributes  to  a  strong 
Talent and Employee Development 
corporate culture that provides value for TransAlta.  

In 2020, we continued with the Leadership Development Program that was launched the previous year. This program 
provided  143  leaders  or  future  leaders  with  fundamental  leadership  skills  and  tools.  Training  programs  focused  on  a 
variety of leadership competencies for participants with various years of management experience. In December 2019, 
we  launched  a  Professional  Development  Library  that  contains  over  600  articles  on  professional  development  and 
leadership and is updated on a monthly basis. We created this library with a Master Executive Coach and it is accessible 
to all employees. Since the creation of the library, we have had over 5,000 hits and we have over 375 regular users. 

During  2020,  TransAlta  partnered  with  BetterUp,  a  consultancy  providing  professional  coaching,  to  provide  1:1 
coaching for 30 leaders. This was offered to people leaders as part of the Leadership Development initiative. BetterUp 
coaching is tailored to the individual’s needs to allow them to work with their personal coach on areas that are important 
for them. Over the summer of 2020, 80 leaders were offered the Franklin Covey All Access Pass — this resource was 
packaged  with  our  7  Habits  of  Highly  Effective  People  training  and  expanded  on  the  training  with  articles,  videos  and 
activities.  The  Senior  Leadership  also  completed  The  Good  Fight  training,  which  focused  on  reframing  perceptions  on 
conflict and how to stop conflict avoidance. Remote work training was offered to all leaders and employees to help them 
work effectively in a remote setting.

During 2020, Alberta Merchant Market Training was developed internally by stakeholders in Operations, and Trading 
and  Marketing.  This  training  consisted  of  three  modules,  including  power  market  fundamentals,  the  Alberta  power 
market, generation portfolio and portfolio optimization, among other topics. This training was available to all employees 
to enhance their knowledge of the Alberta merchant market.

Partnering with Blue Ocean Brain, a micro-learning consultancy, TransAlta implemented compulsory ED&I training for 
all  employees.  This  training  included  five  modules  on  topics  such  as  unconscious  bias  and  allyship.  In  addition,  Blue 
Ocean Brain was also engaged to provide 200 leaders with access to their learning library in 2021.  

We launched the New Grad Program in 2020 with new graduates rotating through Corporate Finance, Trade Finance 
and HR. Each graduate participates in three rotations, each lasting eight months. This program is intended to develop 
knowledge and skills through work experience within multiple business units. 

During  2020,  TransAlta  has  had  17  intern  and  co-op  placements  with  students  in  various  areas  of  study  including 
business,  communications,  finance  and  engineering.  To  assist  in  subsidizing  the  internship  and  co-op  programs, 
TransAlta  continues  to  partner  with  Electricity  Human  Resources  Canada  to  access  government  funding.  In  2020, 
TransAlta received wage subsidies of $120,000. In 2020, TransAlta also participated in the Canada Alberta Job Grant, 
which  reimburses  employers  two-thirds  of  the  cost  of  approved  external  training.  TransAlta  is  currently  approved  to 
receive $56,000 to cover approved training costs.   

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Positive Indigenous, Stakeholder and Customer Relationships: 
We strive to create shared value for our stakeholders through social and relationship value creation at TransAlta. The 
most  material  impacts  on  our  social  and  relationship  performance  are  public  health  and  safety,  anti-competitive 
behaviour  and  fostering  positive  relationships  with  Indigenous  neighbours,  communities,  stakeholders,  governments, 
industry and landowners in the areas where we operate. 

Social and Relationship Capital Management

We operate in Canada, the US and Australia. All of these countries have high human rights standards. TransAlta respects 
the  fundamental  human  rights  of  all  its  employees,  contractors,  suppliers,  partners,  Indigenous  partners  and  other 
Human Rights
stakeholders. We abide by human rights legislation in all the jurisdictions in which we operate. We have a zero tolerance 
approach to discrimination based on age, disability, gender, race, religion, colour, national origin, political affiliation or 
veteran’s status or any other prohibited ground as defined by human rights legislation in the jurisdictions in which we 
operate. We afford equal opportunities for men and women, support the right to freedom of association and the right to 
organize unions and bargain collectively. We do not conduct operational human rights reviews or impact assessments, 
but we do continue to operate aligned with the highest ethical standards, such as ISO 14001 and ISO 18001.

At  TransAlta,  we  value  our  relationships  and  partnerships  with  stakeholders  and  our  Indigenous  partners.  Our 
Indigenous  Relations  team  focuses  on  community  engagement,  employment,  economic  development  and  community 
Indigenous Relationships and Partnerships 
investment.  We  ensure  that  TransAlta’s  principles  for  engagement  are  upheld  and  that  the  Corporation  fulfils  its 
commitments  to  Indigenous  communities.  Efforts  are  focused  on  building  and  maintaining  solid  relationships  and 
establishing  strong  communication  channels  that  enable  TransAlta  to  share  information  regarding  operations  and 
growth initiatives, gather feedback to inform project planning and understand priorities and interests from communities 
to better address concerns. 

Methods of engagement include: 

▪

Relationship building through regular communication and in-person meetings with representatives at various 
levels within Indigenous community organizations; 
Hosting company-community activities that share both business information and cultural lessons; 

▪
▪ Maintaining consistent communications with each community and following appropriate community protocols 

and procedures; 
Participating in community events such as pow wows and blessing ceremonies; and 
Providing both monetary and in-kind sponsorships for community initiatives. 

▪
▪

TransAlta  is  proactive  with  initiating  engagement  early  on  in  project  development  to  allow  concerns  to  be  identified 
promptly  and  addressed,  minimizing  potential  project  delays.  We  conduct  consultation  primarily  during  project 
development  and  decommissioning  and  maintain  engaged  communication  throughout  the  operation  phase.  We  work 
with communities to build a relationship with a foundation of ongoing communication and mutual respect.

COVID-19  health  measures  posed  challenges  to  how  we  engaged  with  Indigenous  communities  throughout  2020. 
However, we continued to have regular dialogue by telephone, email, video conference and whenever possible, in small 
group  meetings  while  adhering  to  government  health  protocols.  Our  normal  participation  in  Indigenous  community 
events  such  as  pow  wows,  blessing  ceremonies,  and  school  or  recreational  activities  was  not  possible  as  social 
gatherings  were  not  permitted  during  the  pandemic.  In  response,  our  Indigenous  Relations  team  determined  it  was 
important to reallocate funding for social events to support Indigenous communities and their expressed needs. 

Support from TransAlta for Indigenous communities in response to the pandemic included the:

▪

▪

▪
▪

Purchase and distribution of 400 school backpacks filled with grade-specific school supplies delivered to First 
Nation schools in Alberta to help alleviate pressures on household and community resources;
Purchase  of  more  than  200  Christmas  gifts  for  school  students  at  Mother  Earth’s  Children’s  Charter  School 
and Wihnemne School on Paul First Nation;
Purchase of Christmas gift cards for Elders per requests from Piikani and Siksika Nations; and
Funding for the purchase of COVID-19 testing equipment for the Alexis Nakota Sioux Nation.

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Support for Indigenous Youth, Education and Employment
TransAlta  recognizes  the  importance  of  investing  in  Indigenous  students  and  our  financial  support  helps  students 
complete  their  education,  become  self-sufficient  and  give  back  to  their  communities.  We  are  keen  to  help  young 
Indigenous students reach their full potential and achieve their dreams. We also believe in providing financial support to 
Indigenous primary school students, helping to instill a passion for lifelong learning. In 2020, TransAlta provided more 
than $340,000 to support Indigenous youth, education and employment programs across Canada. 

Highlights include:

▪

▪

▪

▪

▪

▪

Entered  into  an  agreement  with  Mount  Royal  University  Foundation  in  support  of  the  Indigenous  Housing 
Renovation  Fund,  which  will  feature  an  Indigenous  family  tipi  in  an  outdoor  space  dedicated  to  Indigenous 
students and supporting Indigenous cultural programming;
Continued  our  partnership  with  Indspire,  Canada’s  national  Indigenous  registered  charity,  and  through  this 
program,  10  bursaries  of  $3,000  each  were  given  to  recipients  from  the  following  communities:  Ermineskin 
Cree Nation, Paul First Nation, Sunchild First Nation, Piikani Nation and Aamjiwnaang First Nation;
Continued our support of Indigenous students with the Southern Alberta Institute of Technology ("SAIT") Gap 
program. This program provides critical financial support needed for aspiring Indigenous students who require 
high school upgrading in order to qualify for a trade program where there is a "gap" in available funding;
In  partnership  with  the  United  Way  of  Calgary  &  Area,  designated  funding  to  the  Diamond  Willow  Youth 
Lodge, a safe place for Calgary Indigenous youth to connect with peers and participate in a variety of programs 
that promote health and wellness, education and employment preparation;
Provided  funding  to  the  Lac  Ste.  Anne  Métis  Capacity  Fund  to  support  the  training  needs  of  community 
members  including  youth  and  women,  and  the  provision  of  personal  protective  equipment  for  individuals 
entering the workforce; and
Continued  our  ongoing  partnership  with  the  Banff  Centre  for  Arts  and  Creativity  with  scholarship  funding 
allocated to Indigenous community members to participate in Indigenous Leadership programming.  

Cultural Awareness for TransAlta Employees
Our  Indigenous  Relations  team  led  two  cultural  awareness  initiatives  for  TransAlta  employees  in  2020.  The  first 
program  was  launched  in  June  in  recognition  of  National  Indigenous  History  Month  and  National  Indigenous  Peoples 
Day  (June  21).  TransAlta  hosted  a  virtual  Lunch  and  Learn  session  featuring  an  interview  with  a  community  member 
from Paul First Nation and TransAlta’s senior advisor for Indigenous & Stakeholder Relations, moderated by our Chief 
Legal,  Regulatory,  &  External  Affairs  Officer.  On  Sept.  30,  2020,  in  recognition  of  Orange  Shirt  Day,  TransAlta’s 
Executive Leadership Team encouraged all employees to wear orange to promote awareness in Canada about the Indian 
residential  school  system  and  the  impact  it  has  had  on  Indigenous  communities  for  over  a  century.  In  addition,  a 
comprehensive  educational  program  was  designed  and  delivered  to  Operations  leaders  providing  information  on 
Indigenous history, culture, consultation requirements and TransAlta’s relationship protocols and practices.

In  2021,  we  adopted  a  new  sustainability  target  stating  that  all  employees  should  complete  Indigenous  cultural 
awareness  training  by  the  end  of  2023.  We  believe  education  is  a  key  ingredient  to  ensure  respectful  and  strong 
relationships into the future.

Fostering  relationships  with  our  stakeholders  is  important  to  TransAlta.  Driven  by  our  values,  we  seek  to  maximize 
value  creation  for  our  stakeholders  and  the  Corporation.  We  take  a  proactive  approach  to  building  relationships  and 
Stakeholder Relationships
understanding the impacts our business may have on local stakeholders. 

TransAlta Stakeholders 
To act in the best interests of the Corporation and to optimize the balance between financial, environmental and social 
value for both our stakeholders and TransAlta, we seek to:

▪
▪

▪

Engage regularly with stakeholders about our operations, growth prospects and future developments;
Consider feedback and make changes to project designs and plans to resolve and/or accommodate concerns 
expressed by our stakeholders; and
Respond  in  a  timely  and  professional  manner  to  stakeholder  inquiries  and  concerns  and  work  diligently  to 
resolve issues or complaints.

Our  stakeholders  are  identified  through  stakeholder  mapping  exercises  conducted  for  each  facility  and  prospective 
project  development  or  acquisition.  Through  decades  of  stakeholder  relations  in  the  areas  of  our  facilities,  we  have 
developed a strong knowledge of who our stakeholders are and have gained understanding of our stakeholders' issues 
and concerns.

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Management’s Discussion and Analysis

Our principal stakeholder groups are listed in the following table. 

TransAlta Stakeholders

Non-governmental organizations (NGOs)

Community associations and organizations Connecting transmission facility operators

Regulators

Industry organizations

Charitable organizations/Non-profit

Standards organizations

All levels of government

Media

Business partners

Communities

Retirees

Residents/Landowners

Investor organizations

Suppliers

Contractors

Government agencies

System operators

Customers

Municipalities

Unions/Labour organizations

Financial institutions

Forest associations/Industry

Mineral rights owners

Oil & gas associations/Industry

Railroad owners

Think tanks 

Academics

Utility owners

Engagement Framework 
Our stakeholder engagement framework is modelled after and closely tied to the stakeholder engagement aspect of ISO 
14001,  which  is  an  internationally  recognized  environmental  management  standard.  This  framework  is  a  streamlined 
corporate-wide  approach  to  ensure  that  engagement  and  relationship-building  practices  are  consistent  across 
TransAlta’s locations and types of work. Although we no longer certify under ISO 14001, we continue to operate within 
its established best practices. 

Methods of Engagement 
In order to run our business successfully, we maintain open communication channels with stakeholders. We commit to 
timely  and  professional  resolution  using  values-based  dialogue.  We  work  internally  and  with  each  stakeholder  to 
identify how to mitigate further issues. 

Examples of our methods of engagement are listed in the following table.

Information & communication

Dialogue & consultation

Relationship building

Open houses, town halls and public 
information sessions

In-person meetings with local groups and 
communities

Community advisory bodies

Newsletters, telephone conversations, 
emails and letters

Meetings with individual stakeholders (e.g., 
landowners and residents) 

Capacity agreements

Websites

Targeted audience sessions

Sponsorships and donations

Social media postings

Tours of our facilities and sites

Hosting events

A  key  focus  of  our  work  is  to  support  business  growth  through  proactive  engagement  with  stakeholders  in  our 
geographic operating areas in Australia, Canada and the US to develop and maintain relationships, assess needs and fit, 
and seek out collaborative and sustainable value creation opportunities. This helps ensure any stakeholder concerns are 
identified  and  can  be  addressed  early  in  the  development  process,  thereby  minimizing  project  delays.  We  conduct 
consultation  primarily  during  project  development  and  decommissioning  and  maintain  engaged  communication 
throughout  operations.  For  example,  we  implemented  our  stakeholder  engagement  program  with  stakeholders  and 
Indigenous  groups  in  connection  with  the  proposed  repowering  at  the  Sundance  and  Keephills  facilities.  We  filed  our 
regulatory  applications  in  December  2019,  and  our  stakeholder  engagement  program  will  continue  for  the  entire  life 
cycle of the facilities. 

Engagement Tracking and Reporting 
Our  Stakeholder  and  Indigenous  Relations  tracking  program  functions  as  an  enterprise-wide  communication  record-
keeping  tool  managed  by  our  Stakeholder  and  Indigenous  Relations  team.  This  capacity  fulfils  our  requirements  for 
consultation with stakeholders and Indigenous groups alike, and is capable of producing regulatory reports as proof of 
engagement  and  consultation  efforts.  The  tool  can  store  email  conversations,  documents  and  voicemail  messages 
related  to  any  project,  event  or  issue,  and  display  them  in  a  report  format.  It  can  also  produce  an  array  of  statistical 
reports showing frequency and volume of engagement based on project, stakeholder, stakeholder group or keywords. 
This tracking program decreases the time and cost required to submit proof of engagement to government agencies. 

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Management’s Discussion and Analysis

The Board believes that it is important to have constructive engagement with its shareholders and other stakeholders 
and  has  established  means  for  the  shareholders  of  the  Corporation  and  other  stakeholders  to  communicate  with  the 
Engagement and Board Communication 
Board. For example, employees and other stakeholders may communicate with the Board through the AFRC by writing 
to the AFRC or by making submissions via the Corporation’s toll-free telephone or online Ethic Helpline (please refer to 
the "Governance and Risk Management - Risk Controls - Whistleblower System" section in this MD&A for more details). 
Shareholders are also invited to communicate directly with the Board under the Corporation’s Shareholder Engagement 
Policy,  which  outlines  the  Corporation’s  approach  to  proactive  director-shareholder  engagement  at  and  between  the 
Corporation’s  annual  shareholders  meetings.  Under  the  Shareholder  Engagement  Policy,  shareholders  can  submit 
questions  or  inquiries  to  the  Board,  to  which  the  Corporation  will  respond.  A  copy  of  the  Shareholder  Engagement 
Policy  is  available  on  our  website  at  www.transalta.com.  Shareholders  and  other  stakeholders  may,  at  their  option, 
communicate with the Board on an anonymous basis. In addition, the Board has adopted an annual non-binding advisory 
vote on the Corporation’s approach to executive compensation (say-on-pay). The Corporation is committed to ensuring 
continued good relations and communications with its shareholders and other stakeholders and regularly evaluates its 
practices in light of any new governance initiatives or developments in order to maintain sound corporate governance 
practices. 

Throughout  2020,  representatives  of  the  Board  engaged  extensively  with  the  Corporation's  significant  shareholders. 
Specifically, since Jan. 1, 2020, the Board has met with 11 shareholders representing approximately 37 per cent of the 
Corporation’s total issued and outstanding common shares.  

We continue to seek solutions to advance supply chain sustainability. In 2020, we worked to optimize our global supply 
chain  management  operations  by  initiating  the  centralization  and  standardization  of  practices  across  our  global 
Supply Chain – Sustainable Sourcing
operations.  As  we  explore  major  projects,  we  assess  vendors  both  at  the  evaluation  stage  and  as  part  of  information 
requests  on  such  elements  as  safe  work  practices,  environmental  practices  and  Indigenous  spend.  This  means,  for 
example, getting information on: 

▪
▪
▪
▪

Estimated value of services that will be procured though local Indigenous businesses;
Estimated number of local Indigenous persons that will be employed; 
Understanding overall community spend and engagement; and 
Understanding the state of community relations through interview processes and stakeholder work. 

In 2019, the Board adopted a Supplier Code of Conduct that applies to all vendors and suppliers of TransAlta. Under this 
code, suppliers of goods and services to TransAlta are required to adhere to our core values, including as they pertain to 
health  and  safety,  ethical  business  conduct  and  environmental  leadership.  The  code  also  allows  suppliers  to  report 
ethical or legal concerns via TransAlta’s Ethics Helpline.

In addition, we rolled out a Supplier Relationship and Performance Management program in 2020 with a few of our key 
and  strategic  suppliers.  The  goals  of  the  program  include  ensuring  alignment  of  our  suppliers’  goals  with  those  of 
TransAlta,  streamlining  communications  while  providing  a  platform  to  discuss  how  to  elevate  performance,  creating 
value  though  access  to  innovative  ideas  and  working  closely  with  the  suppliers  on  executing  activities  more  cost-
effectively.

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We seek to preserve public health and safety. It is our goal to maintain security for our employees and the peoples and 
communities where we operate. 
Public Health and Safety 

We specifically look to minimize the following risks: 

▪
▪
▪
▪

Harm to people; 
Damage to property;
Operational liability; and 
Loss of organizational reputation and integrity. 

We work to prevent incidents and lower our risk by administering security controls such as restricting physical access 
around  and  into  our  operating  facilities.  The  use  of  security  technology  such  as  surveillance  cameras  and  electronic 
access is utilized to ensure the control of secure areas. Regular audits and security risk assessments are conducted to 
ensure continuous improvement of the Security Management Program. Our Security Management Program is focused 
on protection of people, property, information and reputation.

The  Corporate  Emergency  Management  Program  prepares  employees  should  an  emergency  incident  occur.  The 
program  includes  an  emergency  management  policy  and  standard,  which  sets  an  expectation  for  employees  to 
continuously prepare for emergencies. The program has executive sponsorship. It provides the overarching framework 
for  each  business  unit  to  provide  an  Emergency  Response  Plan  and  Business  Continuity  Plan.  We  implement  our 
Incident  Command  System,  which  is  a  standardized  on-scene  emergency  and  incident  management  system  that 
provides an organizational structure able to respond to single or multiple incidents. Designed to aid in the management 
of  resources  during  incidents,  it  combines  facilities,  equipment,  personnel,  procedures  and  communications  operating 
within a common organizational structure. It is used as part of an all-hazards approach for incident management and is 
officially recognized for multi-agency response in emergency situations, however complex.  

We  develop  strong  relationships  with  local  emergency  responders.  We  periodically  conduct  multi-agency  training 
events  at  our  facilities.  This  ensures  continuous  improvement,  familiarity  with  our  assets  and  builds  strong 
communication channels for emergency response. 

Our processes designate how we communicate with stakeholders in the event of a crisis. This is managed by our Crisis 
Communications Team. The team has the responsibility and goal to provide a unified message on behalf of Corporation 
throughout the response and recovery, ensure all messaging is approved by the Incident Commander (the Chief Talent & 
Transformation  Officer,  or  their  designate),  co-ordinate  messaging  with  any  applicable  external  agencies  and,  if 
necessary, deploy to an incident site.  

Annual  training  requirements  are  adhered  to  by  our  employees  operating  at  our  facilities.  The  results  are  tracked, 
audited  and  presented  at  our  annual  executive  review.  The  findings  and  recommendations  assist  in  maintaining  a 
sustainable program across the organization.

Data and Digital Asset Protection
We work hard to protect our digital assets, including our corporate data and our digital identities that give us access into 
line of business applications. Cybersecurity risks that work to compromise these assets include the manipulation of data 
integrity,  system  and  network  hacking,  use  of  social  engineering  tactics  through  email  phishing,  compromise  of 
operations  and  infrastructure  through  the  use  of  ransomware,  credential  breaches,  attacks  introduced  through 
unknowing  third-party  vendors  and  service  providers,  as  a  well  as  malware.  Given  the  ever-evolving  nature  of 
cyberattacks,  we  are  consistently  adapting  our  cybersecurity  program  to  focus  on  three  key  pillars:  technology, 
processes and people. Each of these pillars can be reinforced independently to address specific cyber risks and threats 
through  a  comprehensive  and  multi-faceted  program.  Through  this  program,  TransAlta  continually  implements 
measures  and  controls  to  proactively  mitigate  internal  and  external  cybersecurity  risks  and  threats  posed  to  the 
organization, and to deal efficiently and effectively with threats.

Please refer to Cybersecurity Risk in the Governance and Risk Management section of this MD&A for further details.

In 2020, TransAlta contributed approximately $2.2 million in donations and sponsorships (2019 - $2.1 million). One of 
our  significant  community  investments  each  year  is  to  United  Way  campaigns  across  Canada  and  the  US.  This  year, 
Community Investments 
TransAlta employees, retirees, contractors and the Corporation raised over $1.3 million for the United Way. TransAlta 
has been supporting the United Way for over 30 years and has contributed more than $20 million dollars over that time.

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In  2020,  we  continued  to  focus  our  community  investment  on  priority  areas  for  TransAlta:  youth  and  education, 
environmental leadership and community health and wellness. Some of our partnerships included:

▪

Indspire,  Canada’s  national  Indigenous  registered  charity,  and  through  this  program  10  bursaries  of  $3,000 
each  were  given  to  recipients  from  the  following  communities:  Ermineskin  Cree  Nation,  Paul  First  Nation, 
Sunchild First Nation, Piikani Nation and Aamjiwnaang First Nation;

▪

▪

▪

▪ Mother Earth's Children's Charter School ("MECCS") - Located in Treaty 6 territory, near Stony Plain, Alberta, 
and our Alberta coal operations, MECCS has become an important part of TransAlta’s community investment 
program. MECCS offers education for students from Kindergarten to Grade 9 and is cited as Canada’s first and 
only  Indigenous  children’s  charter  school.  The  school  was  established  in  2003  to  help  provide  Indigenous 
students  with  an  education  based  strongly  on  cultural  context  rather  than  a  traditional  western  educational 
model. Approximately 95 per cent of MECCS students are of Indigenous ancestry, with students coming from 
Paul  First  Nation,  Enoch  Cree  Nation,  Alexis  Nakota  Sioux  Nation,  Alexander  First  Nation,  Alberta  Beach, 
Stony  Plain  and  Edmonton.  The  student  population  is  diverse  and  includes  Métis,  Cree,  Nakota  Sioux  and 
Stoney.  Beginning  in  2014,  TransAlta  has  made  an  annual  $35,000  donation  to  the  school.  In  addition,  each 
year  at  Christmas,  TransAlta  staff  purchase  Christmas  presents  for  the  students.  Volunteers  from  TransAlta 
travel  to  the  school  to  deliver  the  gifts,  providing  both  our  employees  and  the  students  the  opportunity  to 
engage  with  each  other.  Due  to  the  COVID-19  pandemic,  this  tradition  needed  to  be  conducted  remotely. 
More than 200 Christmas gifts were purchased for students at Mother Earth’s Children’s Charter School and 
Wihnemne School on Paul First Nation;
The Calgary Stampede – Founded in 2017, the TransAlta Performing Arts Studio at Stampede Park continues 
to  provide  a  year-round  facility  for  the  Calgary  Stampede  Foundation  and  Calgary’s  youth  performing  arts 
groups to rehearse, train and celebrate the arts; 
SAIT  Gap  program,  which  provides  critical  financial  support  needed  for  aspiring  Indigenous  students  who 
require  high  school  upgrading  in  order  to  qualify  for  a  trade  program  where  there  is  a  "gap"  in  available 
funding;
TransAlta  Tri-Leisure  Centre  -  The  TransAlta  Tri-Leisure  Centre  is  a  sporting  and  recreation  destination  for 
many active and involved residents from the communities of Parkland County, Spruce Grove and Stony Plain in 
Alberta. At the facility, thousands of local residents and many of our employees participate in a wide range of 
sporting and cultural activities and join together in many community causes; 
The Banff Centre for Arts and Creativity – We continued our ongoing partnership with the Banff Centre with 
scholarship  funding  allocated  to  Indigenous  community  members  to  participate  in  Indigenous  leadership 
training;
Junior  Achievement  Southern  Alberta  –  TransAlta  continued  to  support  the  World  of  Choices  program  that 
gives students an opportunity to connect with mentors in a number of different careers. In 2020, this program 
was delivered online, allowing hundreds of students to connect with mentors and learn about different career 
opportunities; 
Calgary  Reads  –  TransAlta  was  proud  to  continue  our  support  for  this  organization  that  is  dedicated  to 
improving literacy skills for children in Calgary; and
Energy Transition Support – On July 30, 2015, in Washington State, we announced a US$55 million community 
investment over 10 years to support energy efficiency, economic and community development, and education 
and retraining initiatives. The US$55 million community investment is part of the TransAlta Energy Transition 
Bill  passed  in  2011.  This  bill  was  an  historic  agreement  between  policymakers,  environmentalists,  labour 
leaders and TransAlta to transition away from coal in Washington State by closing the Centralia facility’s two 
units,  one  in  2020  and  the  other  in  2025.  Three  funding  boards  were  formed  to  invest  the  $55  million:  the 
Weatherization  Board  ($10  million),  the  Economic  &  Community  Development  Board  ($20  million)  and  the 
Energy  Technology  Board  ($25  million).  To  date,  the  Weatherization  Board  has  invested  $7  million,  the 
Economic & Community Development Board $14 million and the Energy Technology Board $9 million. Specific 
projects that the boards funded in 2020 include energy-efficiency projects at local fire stations and low income 
housing, funding to support COVID-19 personal protection equipment for local businesses and schools, and a 
project to deploy the first renewable hydrogen fuelling station in the Pacific Northwest, which benefits both 
the electricity and transportation sectors.

▪

▪

▪

▪

TransAlta  serves  industrial  and  commercial  customers  with  power  and  energy  services  across  its  fleet  (Australia, 
Canada and the US). For more information on our customer focus, please refer to page 79 of this MD&A.
Customers

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Management’s Discussion and Analysis

Technology and innovation are an existing and increasing focus at TransAlta. As we navigate significant macro changes 
from energy transition, the impacts of climate change and decarbonization, and the continued rise of digital technology, 
Technology Adoption and Innovation Focus: Manufactured Capital Management
automation  and  artificial  intelligence,  we  are  proactively  applying  technology  solutions  across  our  business.  Our 
conversion of coal units to gas is an excellent example of utilizing useful manufactured capital or infrastructure. We also 
continue to adopt and apply innovative solutions to meet customer demand for power. 

Project  Greenlight  has  been  a  key  driver  in  ensuring  the  Corporation  continues  to  provide  year-over-year 
improvements  in  innovation.  The  program  is  focused  on  bottom-up  innovation,  which  means  ideas  are  generated  by 
Innovation: Idea Generation and Project Management
employees.  Emphasizing  bottom-up  innovation  across  the  Corporation  has  resulted  in  a  strong  culture  of  idea 
generation,  where  employee  ideas  are  developed  and  advanced  into  business  cases,  adhering  to  project  management 
best practices to ensure the delivery and success of the initiative. 

Another initiative we promote is the Supplier Innovation Series, which brings in guest speakers from outside TransAlta 
to  discuss  innovation.  This  includes  thought  leaders  on  new  technologies  to  discuss  conceptual  ideas  that  initiate 
creative thinking and suppliers that provide insight into commercial applications of evolving technologies. In 2020, the 
topics discussed included artificial intelligence, virtual and augmented reality, robotic welding, the connected workforce, 
design thinking and innovation in safety. Subsequent to each session, small employee-led workshops consolidate ideas 
to further flesh out and drive new Greenlight initiatives.

Key priority practices addressed by the Supplier Innovation Series:

▪
▪
▪
▪

Creativity and entrepreneurial thinking;
Bottom-up innovation;
Knowledge sharing; and
Capturing external ideas.

For further details on our investment in our workforce, please see the Talent and Employee Development section of this 
MD&A.

In 2015, the Government of Alberta introduced regulations designed to end coal-powered generation in the province by 
2030. A number of our coal facilities had useful lives beyond 2030 and could be converted to use natural gas. We are 
Innovation: Infrastructure Innovation 
planning to convert or repower Alberta coal units to natural gas in the 2020 to 2023 time frame. Our Sundance 6 facility 
has recently been converted to gas. Through our conversion to gas and the repowering of Sundance 5, our energy use, 
GHG  emissions,  air  emissions,  waste  generation  and  water  usage  will  significantly  decline.  Repurposing  the  facilities 
rather than decommissioning them supports the concept of reuse and aligns with the UN's SDGs, specifically "Goal 9: 
Industry, Innovation and Infrastructure."

TransAlta  has  been  at  the  forefront  of  innovation  in  the  power-generation  sector  since  the  early  1900s  when  we 
developed hydro assets. We have been an early adopter and developer of wind technology in Canada and are now one of 
Innovation: Applied Technologies 
the  largest  wind  generators  in  the  country.  Today  we  run  a  Wind  Control  Centre  that  monitors,  to  the  second,  every 
wind  turbine  we  operate  across  North  America.  In  2015,  we  made  our  first  investment  in  solar  technology  with  the 
purchase of a 21 MW solar facility in Massachusetts and in 2020 we installed the first utility-scale battery in Alberta at 
our Summerview II wind facility. From 2000 to 2020, we have grown renewables capacity from approximately 900 MW 
to over 2,500 MW. 

As we balance growth with decarbonization, we continue to seek solutions to innovate and create value for investors, 
society and the environment. This is evidenced by our continued execution of the accelerated conversion to gas plans, 
construction of the 207 MW Windrise wind project located in Alberta, and investment in the 137 MW Skookumchuck 
wind  facility  in  Washington  State.  In  2020,  we  also  acquired  a  contracted  29  MW  cogeneration  facility  in  Michigan. 
Cogeneration is recognized by regulatory bodies for its efficient generation of power when compared to other forms of 
natural gas power generation. It reduces the natural gas required by industrial processes by generating high-efficiency 
steam and power versus a boiler and grid supply approach. The distributed system also provides independence from the 
power grid and avoids the need to construct additional transmission lines. 

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We are also investing in battery storage. TransAlta began commercial operations of Alberta’s first utility-scale lithium-
ion battery storage facility, called WindCharger, on Oct. 15, 2020. This project is unique as it uses TransAlta’s existing 
Summerview II wind facility to charge the battery, allowing WindCharger to be a truly renewable battery energy storage 
system. The project uses Tesla technology and has a nameplate capacity of 10 MW with a total storage capacity of 20 
MWh.  TransAlta  received  co-funding  for  this  project  from  Emissions  Reduction  Alberta.  The  potential  exists  for  the 
expansion  of  this  technology,  and  we  are  investigating  the  viability  of  battery  storage  at  our  various  wind  facility 
locations and for use in developing customer-specific energy supply solutions.

Our teams continuously explore the use of applied or new technologies to find solutions to expand or adapt our fleet in 
an  ever-changing  world.  This  helps  protect  our  shareholder  value  and  maintain  delivery  of  reliable  and  affordable 
electricity. We know that new technologies will emerge over the next number of years as the industry continues to drive 
towards lower emissions while maintaining a reliable and affordable product for customers. Our teams continue to be 
involved  in  assessing  emerging  technologies  such  as  hydrogen  and  carbon  capture  and  storage  as  well  as  the 
development  of  bespoke  behind-the-fence  solutions  for  customers  using  a  combination  of  technologies  such  as 
renewables  and  batteries.  The  following  are  further  examples  of  how  we  have  developed  innovative  solutions  to 
optimize and maximize value from our fleet: 

Operations Diagnostic Centre 
TransAlta  has  run  its  Operations  Diagnostic  Centre  (“ODC”)  since  2008.  The  ODC  monitors  coal-fired,  gas-fired  and 
wind generating assets across Australia, Canada and the US. A centralized team of engineers and operations specialists 
remotely monitors our power facilities for emerging equipment reliability and performance issues. ODC staff are trained 
in  the  development  and  use  of  specialized  equipment  monitoring  software  and  they  apply  their  experience  to  power 
facility operations. If an equipment issue is detected, the ODC notifies facility operations to investigate and remedy the 
issue before there is an impact to operations. This support is critical to reliability and performance of our operations. By 
way  of  example,  if  a  wind  turbine  starts  to  underperform  compared  to  others,  our  operation  team  is  notified  and  will 
work to investigate and remedy the issue. The monitoring, analysis and diagnostics completed by the ODC are focused 
on  early  identification  of  equipment  issues  based  on  longer-term  trend  analysis  and  complements  day-to-day  facility 
operations. 

Data & Innovation
TransAlta created the Data & Innovation team in 2019 to modernize its data infrastructure to take advantage of new 
opportunities in analytics and artificial intelligence. The Data & Innovation team is cross-functional, composed of data 
architects,  data  scientists,  data  analysts,  software  developers,  engineers,  project  managers,  and  financial  and  systems 
analysts. The team focuses its efforts on the delivery and enhancement of TransAlta’s Modern Data Architecture, the 
rapid delivery of data-driven applications, the design and implementation of machine learning and artificial intelligence 
models and the advancement of process automation through the Robotic Process Automation Centre of Excellence. In 
2020,  the  Data  &  Innovation  team  worked  with  partners  across  the  business  to  create  new  tools  and  processes  that 
improve our financial position and return capacity to our people. A few of the highlights from this work include:

▪

▪

GenOS, an innovative new platform where data is used to drive the actions of our assets and the decisions of 
our  people,  piloted  with  Wind  Operations.  This  pilot  project  combines  data  and  analytics  from  a  variety  of 
sources  into  one  central  web  application  and  creates  new  opportunities  to  drive  further  adoption  of 
automation across our operations; and
Industry  partnership  with  AltaML  Applied  AI  Lab,  a  groundbreaking  initiative  that  focuses  on  building  and 
expanding local talent while improving our business through the application of machine learning and artificial 
intelligence.

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Management’s Discussion and Analysis

2020 Sustainability Targets Performance 
Our sustainability goals and targets support the long-term success of our business. Goals and targets are established to 
Sustainability Targets and Results
manage key or emerging material sustainability issues and to improve our performance in these areas.

We establish our goals and targets with reference to the UN's SDGs and the Future-Fit Business Benchmark. This focus 
ensures our goals and targets are meaningful in the broader context of solving societal problems; support the ambition 
of achieving a more sustainable, safe and just planet in the future; and ensure TransAlta's competitiveness, both today 
and in the future. 

ESG Alignment: Environment

TransAlta Sustainability Goal

Minimize fleet-wide environmental 
incidents

TransAlta Sustainability 
Target

Keep annual significant 
environmental incidents 
below two and keep 
environmental regulatory non-
compliance incidents below 
four

Results

Comments

Not achieved

In 2020, we recorded six significant 
environmental incidents. None of these 
incidents was large in terms of magnitude or 
impact, which is consistent with past 
performance and suggests these types of 
incidents are not a major risk for the 
Corporation or the environment. For 2021, 
we are removing our target for 
environmental incidents but continuing to 
report on these events in the Incidents and 
Spills section of the MD&A. We are making 
this change to focus our targets on 
environmental areas that are more material 
for the Corporation.  

Reclaim land utilized for mining

By 2040, complete full 
reclamation of our Centralia 
coal mine in Washington State 

On track

Reclamation work at our Centralia and 
Highvale mines was paused in 2020 due to 
the COVID-19 pandemic. 

Reduce air emissions

By 2030, achieve a 95 per cent 
reduction of SO2 emissions

On track

Reduce GHG emissions

By 2030, achieve a 50 per cent 
reduction of NOx emissions 
below 2005 levels from 
TransAlta coal facilities

Achieved

On track

By 2030, achieve company-
wide GHG reductions of 60 
per cent below 2015 levels, in 
line with a commitment to the 
UN SDGs and prevention of 
2ºC of global warming

We are well on track to achieve our target 
of 95 per cent emission reductions of SO2 by 
2030. Since 2005, we have reduced SO2 
emissions by 83 per cent. In 2020, we 
reduced SO2 emissions by approximately 
4,000 tonnes over 2019 levels.

We have achieved our target of 50 per cent 
emission reductions of NOx by 2030 ahead 
of schedule. Since 2005, we have reduced 
NOx emissions by 68 per cent. In 2020, we 
reduced approximately 5,000 tonnes of NOx 
emissions over 2019 levels.

We are well on track to achieve our target 
of 60 per cent GHG emissions reductions by 
2030. Since 2015, we have reduced GHG 
emissions by 80 per cent. In 2020, we 
reduced approximately 4.2 million tonnes of 
CO2e over 2019 levels.

ESG Alignment: Social

TransAlta Sustainability Goal

Reduce safety incidents

TransAlta Sustainability 
Target

Achieve a Total Injury 
Frequency rate below 1.17

Results

Comments

Not achieved

In 2020, we achieved a TIF of 1.67 
compared to 1.12 in 2019. The increase in 
2020 was a result of increased first aids 
across our fleet. This may have been due to 
an increase in contractor presence during 
projects and construction at our Sundance 
and Windrise facilities. There was also 
potentially an effect from adjustments that 
all of our workforce had to make due to the 
COVID-19 pandemic.

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Management’s Discussion and Analysis

Support prosperous Indigenous 
communities

Support equal access to all 
levels of education for youth 
and Indigenous peoples 
through financial support and 
employment opportunities

Achieved

Management’s Discussion and Analysis

Support in 2020 represented a total value of 
$340,000 and provided bursaries through a 
partnership with Indspire; funded academic 
upgrading programs through SAIT; 
supported an Indigenous Leadership 
Program; and maintained communication on 
employment opportunities through various 
mediums to support different access 
options for Indigenous communities. 

ESG Alignment: Governance

TransAlta Sustainability Goal

Strengthen gender equality

Demonstrate leadership on ESG 
reporting within financial disclosures

TransAlta Sustainability 
Target

Results

Comments

Achieve a quota of 50 per cent 
female representation on the 
Board by 2030

On track

Achieve at least 40 per cent 
female employment among all 
employees of the Corporation 
by 2030

On track

As of Dec. 31, 2020, women made up 45 per 
cent of our Board. 

As of Dec. 31, 2020, women made up 21 per 
cent of all employees, an increase over 2019 
levels (20 per cent).

Maintain equal pay for women 
in equivalent roles as men

Achieved

Equal pay for women in the Corporation 
was maintained in 2020. 

Maintain our position as a 
leader on integrated ESG 
disclosure through increased 
annual alignment with leading 
sustainability disclosure 
frameworks

Achieved

In 2020, we increased our alignment with 
the SASB sustainability reporting 
framework and increased our CDP Climate 
Change Scoring to an A-. 

ESG Alignment: Environment and Social

TransAlta Sustainability Goal

TransAlta Sustainability 
Target

Results

Comments

Leading clean power company by 2025 By the end of 2025, convert 
coal facilities to gas through 
boiler conversions and 
combined-cycle repowering

No further coal generation by 
the end of 2025 and 100 per 
cent of our owned net 
generation capacity will be 
from clean electricity 
(renewables and gas)

Develop new renewable 
projects that support 
customer sustainability goals 
to achieve both long-term 
power price affordability and 
carbon reductions

On track

On track

Achieved

Our Sundance 6 coal facility began 
conversion to gas in 2020 and was 
completed in early 2021. 

In 2020, we retired our Sundance 3 and 
Centralia 1 coal facilities, converted our 
Sundance 6 coal facility to gas and 
announced the acceleration of our Highvale 
mine closure to the end of 2021. 

In 2020, the Corporation purchased a 49 
per cent interest in the 137 MW 
Skookumchuck wind project and continued 
development of our 207 MW Windrise wind 
project. Our 10 MW WindCharger battery 
storage project also began commercial 
operations. 

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Management’s Discussion and Analysis

Our 2021 and longer-term sustainability targets support the long-term success of our business. The following targets 
2021+ Sustainability Targets
highlight our future ESG value proposition and paint a portrait of how the Corporation will continue to be positioned as 
an ESG leader in the future. Goals and targets are established to manage key and emerging material sustainability issues 
and  to  improve  our  performance  in  these  areas.  We  continue  to  evolve  and  adapt  our  goals  and  targets  to  focus  on 
anticipated key areas of sustainability materiality. 

We establish our goals and targets with reference to the UN's SDGs and the Future-Fit Business Benchmark. This focus 
ensures our goals and targets are meaningful in the broader context of solving societal problems; support the ambition 
of achieving a more sustainable, safe and just planet in the future; and ensure TransAlta's competitiveness both today 
and in the future.

Targets are outlined below:

ESG Alignment: Environment

TransAlta Sustainability Goal

TransAlta Sustainability Target

Reclaim land utilized for mining

By 2040, complete full reclamation of our Centralia coal 
mine in Washington State 

By 2046, complete full reclamation of our Highvale coal 
mine in Alberta

Responsible water management

By 2026, reduce fleet-wide water consumption 
(withdrawals minus discharge) by 20 million m3 or 40 per 
cent over the 2015 baseline

Reduce operational waste

By 2022, reduce total waste generation by 80 per cent 
over a 2019 baseline

Reduce air emissions

By 2026, achieve a 95 per cent reduction of SO2 emissions 
and an 80 per cent reduction of NOx emissions below 2005 
levels

Reduce GHG emissions

By 2030, achieve company-wide GHG reductions of 60 per 
cent below 2015 levels, in line with a commitment to the 
UN's SDGs and prevention of 2ºC of global warming

By 2050, achieve carbon neutrality 

ESG Alignment: Social

TransAlta Sustainability Goal

TransAlta Sustainability Target

Reduce safety incidents

Achieve a Total Recordable Injury Frequency rate below 
0.61

Alignment with UN's SDG 
Target or Future-Fit Business 
Benchmark

Future-Fit Business Benchmark 
- "Positive Pursuits 13: 
Ecosystems are restored"

Future-Fit Business Benchmark 
- "Positive Pursuits 13: 
Ecosystems are restored"

UN's SDG Target 6.4: "By 2030, 
substantially increase water-use 
efficiency across all sectors and 
ensure sustainable withdrawals 
and supply of freshwater to 
address water scarcity and 
substantially reduce the number 
of people suffering from water 
scarcity."

UN's SDG Target 12.5: "By 
2030, substantially reduce 
waste generation through 
prevention, reduction, recycling 
and reuse."

UN's SDG Target 9.4: "By 2030, 
upgrade infrastructure and 
retrofit industries to make them 
sustainable, with increased 
resource-use efficiency and 
greater adoption of clean and 
environmentally sound 
technologies and industrial 
processes"

UN's SDG Target 13.2: 
"Integrate climate change 
measures into national policies, 
strategies and planning."

Alignment with UN's SDG 
Target or Future-Fit Target

UN's SDG Target 8.8: "Protect 
labour rights and promote safe 
and secure working 
environments for all workers, 
including migrant workers, in 
particular women migrants, and 
those in precarious 
employment."

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Support prosperous Indigenous 
communities

Support equal access to all levels of education for youth 
and Indigenous peoples through financial support and 
employment opportunities

Provide Indigenous cultural awareness training to all 
TransAlta employees by the end of 2023

ESG Alignment: Governance

TransAlta Sustainability Goal

TransAlta Sustainability Target

Strengthen gender equality

Achieve a quota of 50 per cent female representation on 
the Board by 2030

Achieve at least 40 per cent female employment among all 
employees of the Corporation by 2030

Maintain equal pay for women in equivalent roles as men

Demonstrate leadership on ESG 
reporting within financial disclosures

Maintain our position as a leader on integrated ESG 
disclosure through increased annual alignment with 
leading sustainability disclosure frameworks

ESG Alignment: Environment and Social

TransAlta Sustainability Goal

TransAlta Sustainability Target

Coal transition

No further coal generation by the end of 2025 and 100 per 
cent of our owned net generation capacity will be from 
clean electricity (renewables and gas)

Discontinue coal power generation in Canada by the end of 
2021

Clean energy solutions for customers Develop new renewable projects that support customer 

sustainability goals to achieve both long-term power price 
affordability and carbon reductions

UN's SDG Target 4.5: "By 2030, 
eliminate gender disparities in 
education and ensure equal 
access to all levels of education 
and vocational training for the 
vulnerable, including persons 
with disabilities, Indigenous 
peoples and children in 
vulnerable situations."

UN's SDG Target 12.8: "By 
2030, ensure that people 
everywhere have the relevant 
information and awareness for 
sustainable development and 
lifestyles in harmony with 
nature."

Alignment with UN's SDG 
Target or Future-Fit Target

UN's SDG Target 5.5: "Ensure 
women’s full and effective 
participation and equal 
opportunities for leadership at 
all levels of decision making in 
political, economic and public 
life."

UN's SDG Target 12.6: 
"Encourage companies, 
especially large and 
transnational companies, to 
adopt sustainable practices and 
to integrate sustainability 
information into their reporting 
cycle."

Alignment with UN's SDG 
Target or Future-Fit Target

UN's SDG Target 7.1: "By 2030, 
ensure universal access to 
affordable, reliable and modern 
energy services."

UN's SDG Target 7.1: "By 2030, 
ensure universal access to 
affordable, reliable and modern 
energy services."

UN's SDG Target 7.2: "By 2030, 
increase substantially the share 
of renewable energy in the 
global energy mix."

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Management’s Discussion and Analysis

Our business activities expose us to a variety of risks and opportunities including, but not limited to, regulatory changes, 
rapidly changing market dynamics and increased volatility in our key commodity markets. Our goal is to manage these 
Governance and Risk Management
risks  and  opportunities  so  that  we  are  in  a  position  to  develop  our  business  and  achieve  our  goals  while  remaining 
reasonably  protected  from  an  unacceptable  level  of  risk  or  financial  exposure.  We  use  a  multilevel  risk  management 
oversight structure to manage the risks and opportunities arising from our business activities, the markets in which we 
operate and the political environments and structures with which we interface.

The key elements of our governance practices are:
Governance

Employees, management and the Board are committed to ethical business conduct, integrity and honesty;
▪
▪ We have established key policies and standards to provide a framework for how we conduct our business;
▪

The  Chair  of  our  Board  and  all  directors,  other  than  our  President  and  CEO,  are  independent  within  the 
meaning of National Instrument 58-101 - Disclosure of Corporate Governance Practices;
The  Board is comprised of  individuals with a mix of skills, knowledge and experience that are critical for our 
business and our strategy;
The effectiveness of the Board is achieved through robust annual evaluations and continuing education of our 
directors; and
Our  management  and  Board  facilitate  and  foster  an  open  dialogue  with  shareholders  and  community 
stakeholders.

▪

▪

▪

Commitment to ethical conduct is the foundation of our corporate governance model. We have adopted the following 
codes of conduct to guide our business decisions and everyday business activities:

▪
▪
▪
▪
▪

Corporate Code of Conduct, which applies to all employees and officers of TransAlta and its subsidiaries;
Directors’ Code of Conduct;
Supplier's Code of Conduct;
Finance Code of Ethics, which applies to all financial employees of the Corporation; and
Energy Trading Code of Conduct, which applies to all of our employees engaged in energy marketing.

Our codes of conduct outline the standards and expectations we have for our employees, officers, directors, consultants 
and suppliers with respect to, among other things, the protection and proper use of our assets. The codes also provide 
guidelines  with  respect  to  securing  our  assets,  avoiding  conflicts  of  interest,  respect  in  the  workplace,  social 
responsibility,  privacy,  compliance  with  laws,  insider  trading,  environment,  health  and  safety,  and  our  commitment  to 
ethical and honest conduct. Our Corporate Code of Conduct and Directors' Code of Conduct each goes beyond the laws, 
rules  and  regulations  that  govern  our  business  in  the  jurisdictions  in  which  we  operate;  they  outline  the  principal 
business practices with which all employees and directors must comply.

Our employees, officers and directors are reminded annually about the importance of ethics and professionalism in their 
daily work, and must certify annually that they have reviewed and understand their responsibilities as set forth in the 
respective codes of conduct. This certification also requires our employees, officers and directors to acknowledge that 
they have complied with the standards set out in the respective code during the last calendar year.

The  Board  provides  stewardship  of  the  Corporation  and  ensures  that  the  Corporation  establishes  key  policies  and 
procedures for the identification, assessment and management of principal risks and strategic plans. The Board monitors 
and assesses the performance and progress of the Corporation’s goals through candid and timely reports from the CEO 
and  the  senior  management  team.  We  have  also  established  an  annual  evaluation  process  whereby  our  directors  are 
provided with an opportunity to evaluate the Board, Board committees, individual directors and the Chair of the Board’s 
performance.

In order to allow the Board to establish and manage the financial, environmental, and social elements of our governance 
practices, the Board has established the AFRC, GSSC, the Human Resources Committee (the “HRC”) and the Investment 
Performance Committee ("IPC").

The AFRC, consisting of independent members of the Board, provides assistance to the Board in fulfilling its oversight 
responsibility relating to the integrity of our consolidated financial statements and the financial reporting process; the 
systems  of  internal  accounting  and  financial  controls;  the  internal  audit  function;  the  external  auditors’  qualifications 
and  terms  and  conditions  of  appointment,  including  remuneration,  independence,  performance  and  reports;  and  the 
legal and risk compliance programs as established by management and the Board. The AFRC approves our Commodity 
and Financial Exposure Management policies and reviews quarterly Enterprise Risk Management reporting.

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Management’s Discussion and Analysis

The  GSSC  is  responsible  for  developing  and  recommending  to  the  Board  a  set  of  corporate  governance  principles 
applicable  to  the  Corporation  and  for  monitoring  compliance  with  these  principles.  The  GSSC  is  also  responsible  for 
Board recruitment, succession planning and for the nomination of directors to the Board and its committees. In addition, 
the  GSSC  assists  the  Board  in  fulfilling  its  oversight  responsibilities  with  respect  to  the  Corporation’s  monitoring  of 
environmental,  health  and  safety  regulations  and  public  policy  changes  and  the  establishment  and  adherence  to 
environmental,  health  and  safety  practices,  procedures  and  policies.  The  GSSC  also  receives  an  annual  report  on  the 
annual codes of conduct certification process.

In regards to overseeing and seeking to ensure that the Corporation consistently achieves strong environment, health 
and safety (“EH&S”) performance, the GSSC undertakes a number of actions that include: a) receiving regular reports 
from  management  regarding  environmental  compliance,  trends  and  TransAlta’s  responses;  b)  receiving  reports  and 
briefings on management’s initiatives with respect to changes in climate change legislation, policy developments as well 
as other draft initiatives and the potential impact such initiatives may have on our operations; c) assessing the impact of 
the  GHG  policies  implementation  and  other  legislative  initiatives  on  the  Corporation’s  business;  d)  reviewing  with 
management  the  EH&S  policies  of  the  Corporation;  e)  reviewing  with  management  the  health  and  safety  practices 
implemented within the Corporation, as well as the evaluation and training processes put in place to address problem 
areas;  f)  discussing  with  management  ways  to  improve  the  EH&S  processes  and  practices;  and  g)  reviewing  the 
effectiveness of our response to EH&S issues and any new initiatives put in place to further improve the Corporation’s 
EH&S culture.

The  HRC  is  empowered  by  the  Board  to  review  and  approve  key  compensation  and  human  resources  policies  of  the 
Corporation  that  are  intended  to  attract,  recruit,  retain  and  motivate  employees  of  the  Corporation.  The  HRC  also 
makes  recommendations  to  the  Board  regarding  the  compensation  of  the  CEO,  including  the  review  and  adoption  of 
equity-based  incentive  compensation  plans,  the  adoption  of  human  resources  policies  that  support  human  rights  and 
ethical conduct, and the review and approval of executive management succession and development plans.

The  IPC  is  empowered  by  the  Board  to  oversee  management's  investment  conclusions  and  the  execution  of  major, 
Board-approved  capital  expenditure  projects  that  further  the  Corporation's  strategic  plans.  The  IPC  undertakes  a 
number  of  actions  that  include:  a)  reviewing  and  considering  the  substantive  risks,  returns,  financing  and  other  key 
elements  relating  to  the  Corporation's  major  capital  projects;  b)  reviewing  and  assessing  mitigation  plans,  expected 
outcomes,  and  implementation  throughout  the  project  life  cycle  with  respect  to  substantive  risks;  c)  reviewing  and 
assessing  cost-estimating  methodologies  employed  throughout  the  project  life  cycle;  d)  reviewing  and  assessing 
progress  reports  including  periodic  updates  on  the  project  schedule,  risks  and  costs  at  key  milestones  as  projects 
advance through to execution; e) reviewing post-project look-backs; and f) reviewing and providing recommendations to 
the Board regarding capital expenditures associated with such capital projects. 

The responsibilities of other stakeholders within our risk management oversight structure are described below:

The  CEO  and  executive  management  review  and  report  on  key  risks  quarterly.  Specific  Trading  Risk  Management 
reviews are held monthly by the Commodity Risk and Compliance Committee, and weekly by the commodity risk team, 
the  commercial  managers  in  Trading  and  Marketing,  and  the  Executive  Vice-President,  Finance  &  Trading  and  Chief 
Financial Officer.

The  Investment  Committee  is  chaired  by  our  CEO  and  is  comprised  of  the  CEO,  Executive  Vice-President,  Finance  & 
Trading and Chief Financial Officer, Chief Operating Officer, Chief Development Officer, and Executive Vice-President, 
Legal,  Commercial  and  External  Affairs.  It  reviews  and  approves  all  major  capital  expenditures  including  growth, 
productivity, life extensions and major coal outages. Projects that are approved by the Investment Committee will then 
be put forward for approval by the Board, if required.

The Commodity Risk & Compliance Committee is chaired by our Executive Vice-President, Finance & Trading and Chief 
Financial Officer and is comprised of at least three members of senior management. It oversees the risk and compliance 
program in trading and ensures that this program is adequately resourced to monitor trading operations from a risk and 
compliance  perspective.  It  also  ensures  the  existence  of  appropriate  controls,  processes,  systems  and  procedures  to 
monitor adherence to policy.

The  Hydro  Operating  Committee  consists  of  two  members  who  are  Brookfield  employees  with  expertise  in  hydro 
facility management, and two TransAlta members. This committee was formed in 2019 for the purpose of collaborating 
on matters in connection with the operation, and maximization of the value, of TransAlta's Alberta Hydro Assets. It is 
delivering  on  its  objectives  by  thoroughly  reviewing  the  operating,  maintenance,  safety  and  environmental  aspects  of 
TransAlta's  Alberta  Hydro  Assets  and,  following  that  review,  providing  expert  advice  and  recommendations  to 

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Management’s Discussion and Analysis

TransAlta’s  hydro  operational  team.  The  Committee  has  an  initial  term  of  six  years,  which  can  be  extended  for  an 
additional two years.

TransAlta is listed on the TSX and the New York Stock Exchange and is subject to the governance regulations, rules and 
standards applicable under both exchanges. Our corporate governance practices meet the following governance rules of 
the TSX and Canadian Securities Administrators: a) Multilateral Instrument 52-109 - Certification of Disclosure in Issuers’ 
Annual  and  Interim  Filings;  b)  National  Instrument  52-110  -  Audit  Committees;  c)  National  Policy  58-201  -  Corporate 
Governance  Guidelines;  and  d)  National  Instrument  58-101  -  Disclosure  of  Corporate  Governance  Practices.  As  a  “foreign 
private  issuer”  under  US  securities  laws,  we  are  generally  permitted  to  comply  with  Canadian  corporate  governance 
requirements. Additional information regarding our governance practices can be found in our most recent management 
information circular.

We  have  adopted  a  number  of  risk  mitigation  measures  in  response  to  the  COVID-19  pandemic,  including  the  formal 
implementation  of  TransAlta's  business  continuity  plan  on  March  9,  2020.  The  Board  and  management  have  been 
COVID-19
monitoring the development of the outbreak and are continually assessing its impact on the Corporation's operations, 
supply chains and customers, as well as, more generally, to the business and affairs of the Corporation. Potential impacts 
of the pandemic on the business and affairs of the Corporation include, but are not limited to: potential interruptions of 
production,  supply  chain  disruptions,  unavailability  of  employees  at  TransAlta,  potential  delays  in  growth  projects, 
increased  credit  risk  with  counterparties  and  increased  volatility  in  commodity  prices  and  the  valuations  of  financial 
instruments. In addition, the broader impacts to the global economy and financial markets could have potential adverse 
impacts on the availability of capital for investment and the demand for power and commodity pricing.

To  manage  the  risks  resulting  from  COVID-19,  we  have  taken  a  number  of  steps  in  furtherance  of  the  Corporation's 
business continuity efforts:

Management Responses

▪
▪
▪

▪

▪

Formed a COVID-19 emergency team run by our Chief Operating Officer, reporting to the CEO;
Regularly communicated with the Board and employees in regard to the Corporation's response to COVID-19;
Created a team to develop, implement and update COVID-19 safety protocols, including a back-to-office and 
site strategy that will remain in place until a vaccine has been distributed;  
Established  a  committee  to  consider  and  respond  to  any  claims  of  force  majeure  that  may  be  received  as  a 
result of COVID-19; and
Developed leadership plans, including contingent authorities. 

Policy Changes

▪

Aligned all non-essential travel and quarantine requirements with local jurisdictional guidance for all TransAlta 
employees and contractors returning from air, bus, train or ship travel for all jurisdictions in which we operate.  

Employee Changes

▪

▪

▪

▪

▪

▪

Provided  assurances  to  employees  that  their  employment  with  TransAlta  would  not  be  impacted  by  the 
COVID-19 pandemic;
Developed  and  implemented  COVID-19-specific  back-to-office  protocols  to  ensure  all  TransAlta  locations 
remain safe;
Requested and received an essential workers quarantine exemption approval from Alberta Health to minimize 
disruptions in the event international technical assistance is required for our Alberta assets;
Implemented health screening procedures, including questionnaires and temperature tests, enhanced cleaning 
measures and strict work protocols at the Corporation’s offices and facilities in accordance with our back-to-
office and site strategy;
Implemented  training  and  policies  to  seamlessly  allow  non-essential  employees  to  work  remotely,  as 
appropriate; and
Provided  COVID-19  related  town  halls  and  information  sessions  for  employees  featuring  medical  and 
infectious disease experts.

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Operational Changes

Management’s Discussion and Analysis

▪ Modified  our  operating  procedures  and  implemented  restrictions  to  non-essential  access  to  our  facilities  to 

support continued operations through the pandemic;
Reviewed  the  supply  chain  risk  associated  with  all  key  power-generation  process  inputs  and  implemented 
weekly monitoring for changes in risk;
Reached out to key supply chain contacts to determine strategies and contingencies to ensure we are able to 
continue to progress our growth projects, wherever possible; and
Identified  new  cybersecurity  risks  associated  with  phishing  emails  and  enhanced  security  protocols  and 
increased awareness of potential threats.

▪

▪

▪

Financial Oversight

▪

▪

▪

Continued  to  maintain  a  comprehensive  commodity  hedging  program  for  our  merchant  assets  that  can 
respond to changes in underlying market conditions; 
Continued to monitor counterparties for changes in creditworthiness, as well as monitor their ability to meet 
obligations; and
Continued to monitor the situation and communicate with our key lenders on any foreseeable impacts and on 
our  response  to  the  crisis.  We  maintain  a  strong  financial  position  and  significant  liquidity  with  our  existing 
committed credit facilities.

Overall, we continue to actively monitor the situation and advice from public health officials with a view to responding 
to changing recommendations and adapting our response and approach as necessary.

Our risk controls have several key components:
Risk Controls
Enterprise Tone
We strive to foster beliefs and actions that are true to, and respectful of, our many stakeholders. We do this by investing 
in communities where we live and work, operating and growing sustainably, putting safety first and being responsible to 
the many groups and individuals with whom we work.

Policies
We maintain a comprehensive set of enterprise-wide policies. These policies establish delegated authorities and limits 
for business transactions, as well as allow for an exception approval process. Periodic reviews and audits are performed 
to  ensure  compliance  with  these  policies.  All  employees  and  directors  are  required  to  sign  a  code  of  conduct  on  an 
annual basis.

Reporting
On a regular basis, residual risk exposures are reported to key decision-makers including the Board, the AFRC, senior 
management  and/or  the  Commodity  Risk  &  Compliance  Committee,  as  applicable.  Reporting  to  this  latter  committee 
includes  analysis  of  new  risks,  monitoring  of  status  to  risk  limits,  review  of  events  that  can  affect  these  risks  and 
discussion and review of the status of actions to minimize risks. This monthly reporting provides for effective and timely 
risk management and oversight.

Whistleblower System
We  have  a  process  in  place  where  employees,  contractors,  shareholders  or  other  stakeholders  may  confidentially  or 
anonymously report any potential legal or ethical concerns, including concerns relating to accounting, internal control 
accounting,  auditing  or  financial  matters  or  relating  to  alleged  violations  of  any  laws  or  our  code  of  conduct.  These 
concerns can be submitted confidentially and anonymously, either directly to the AFRC or through TransAlta’s toll-free 
telephone or online Ethics Helpline. The AFRC Chair is immediately notified of any material complaints and, otherwise, 
the AFRC receives a report at every quarterly committee meeting on all findings related to any material complaints or 
complaints relating to accounting or financial reporting or alleged breaches in internal controls over financial reporting.

Value at Risk and Trading Positions
Value  at  risk  (“VaR”)  is  one  of  the  primary  measures  used  to  manage  our  exposure  to  market  risk  resulting  from 
commodity  risk  management  activities.  VaR  is  calculated  and  reported  on  a  daily  basis.  This  metric  describes  the 
potential  change  in  the  value  of  our  trading  portfolio  over  a  three-day  period  within  a  95  per  cent  confidence  level, 
resulting from normal market fluctuations.

VaR is a commonly used metric that is employed by industry to track the risk in commodity risk management positions 
and portfolios. Two common methodologies for estimating VaR are the historical variance/covariance and Monte Carlo 

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approaches.  We  estimate  VaR  using  the  historical  variance/covariance  approach.  An  inherent  limitation  of  historical 
variance/covariance VaR is that historical information used in the estimate may not be indicative of future market risk. 
Stress tests are performed periodically to measure the financial impact to the trading portfolio resulting from potential 
market events, including fluctuations in market prices, volatilities of those prices and the relationships between those 
prices.  We  also  employ  additional  risk  mitigation  measures.  VaR  at  Dec.  31,  2020,  associated  with  our  proprietary 
commodity risk management activities was $1 million (2019 - $1 million). Please refer to the Risk Factors – Commodity 
Price Risk section of this MD&A below for further discussion.

Risk  is  an  inherent  factor  of  doing  business.  The  following  section  addresses  some,  but  not  all,  risk  factors  that  could 
affect our future plans, performance, results or outcomes and our activities in mitigating those risks. These risks do not 
Risk Factors
occur in isolation, but must be considered in conjunction with each other. For a further discussion of these and other risk 
factors affecting the Corporation, readers are encouraged to read the Risk Factors section of the AIF, available on our 
website at www.transalta.com and under our profile on SEDAR at www.sedar.com and on EDGAR at www.edgar.gov.

A  reference  herein  to  a  material  adverse  effect  on  the  Corporation  means  such  an  effect  on  the  Corporation  or  its 
business, operations, financial condition, results of operations and/or its cash flows, as the context requires.

For some risk factors, we show the after-tax effect on net earnings of changes in certain key variables. The analysis is 
based  on  business  conditions  and  production  volumes  in 2020.  Each  item  in  the  sensitivity  analysis  assumes  all  other 
potential variables are held constant. While these sensitivities are applicable to the period and the magnitude of changes 
on  which  they  are  based,  they  may  not  be  applicable  in  other  periods,  under  other  economic  circumstances  or  for  a 
greater magnitude of changes. The changes in rates should also not be assumed to be proportionate to earnings in all 
instances.

Volume Risk
Volume risk relates to the variances from our expected production. The financial performance of our hydro, wind and 
solar operations is highly dependent upon the availability of their input resources in a given year. Shifts in weather or 
climate patterns, seasonal precipitation and the timing and rate of melting and runoff may impact the water flow to our 
facilities.  The  strength  and  consistency  of  the  wind  resource  at  our  facilities  impacts  production.  The  operation  of 
thermal  facilities  can  also  be  impacted  by  ambient  temperatures  and  the  availability  of  water  and  fuel. Where  we  are 
unable to produce sufficient quantities of output in relation to contractually specified volumes, we may be required to 
pay penalties or purchase replacement power in the market.  

We manage volume risk by:

▪

Actively  managing  our  assets  and  their  condition  in  order  to  be  proactive  in  facility  maintenance  so  that  our 
facilities are available to produce when required; 

▪ Monitoring water resources throughout Alberta to the best of our ability and optimizing this resource against 

real-time electricity market opportunities; 
Placing  our  facilities  in  locations  we  believe  to  have  adequate  resources  to  generate  electricity  to  meet  the 
requirements of our contracts. However, we cannot guarantee that these resources will be available when we 
need them or in the quantities that we require; and
Diversifying our fuels and geography to mitigate regional or fuel-specific events.

▪

▪

The sensitivity of volumes to our net earnings is shown below:

Factor

Availability/production

Increase or
decrease (%)

 1 

Approximate impact
on net earnings

$8 million

Generation Equipment and Technology Risk
There  is  a  risk  of  equipment  failure  due  to  wear  and  tear,  latent  defect,  design  error  or  operator  error,  among  other 
things, which could have a material adverse effect on the Corporation. Although our generation facilities have generally 
operated in accordance with expectations, there can be no assurance that they will continue to do so. Our facilities are 
exposed  to  operational  risks  such  as  failures  due  to  cyclic,  thermal  and  corrosion  damage  in  boilers,  generators  and 
turbines, as well as other issues that can lead to outages and increased volume risk. If facilities do not meet availability or 
production  targets  specified  in  their  PPA  or  other  long-term  contracts,  we  may  be  required  to  compensate  the 
purchaser  for  the  loss  in  the  availability  of  production  or  record  reduced  energy  or  capacity  payments.  For  merchant 
facilities,  an  outage  can  result  in  lost  merchant  opportunities.  Therefore,  an  extended  outage  could  have  a  material 
adverse effect on our business, financial condition, results of operations or our cash flows.

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▪

▪

▪

▪

▪

Management’s Discussion and Analysis

Management’s Discussion and Analysis

As  well,  we  are  exposed  to  procurement  risk  for  specialized  parts  that  may  have  long  lead  times.  If  we  are  unable  to 
procure  these  parts  when  they  are  needed  for  maintenance  activities,  we  could  face  an  extended  period  where  our 
equipment is unavailable to produce electricity.

We manage our generation equipment and technology risk by:

▪

▪

▪
▪
▪
▪

Operating  our  facilities  within  defined  industry  standards  that  optimizes  availability  over  their  commercial 
operating life; 
Performing  preventive  maintenance  in  accordance  with  applicable  industry  practices,  major  equipment 
supplier recommendations and our operating experience;
Adhering to comprehensive maintenance programs and regular turnaround schedules;
Adjusting maintenance plans by facility to reflect equipment type, age and commercial risk;
Having adequate business interruption insurance in place to cover extended forced outages;
Having clauses in our PPAs and other long-term contracts that allow us to declare force majeure in the event of 
an unforeseen failure;
Selecting and applying proven technology in our generating facilities, where practical;

▪
▪ Where  technology  is  newer,  ensuring  service  agreements  with  equipment  suppliers  include  appropriate 

availability and performance guarantees;

▪ Monitoring  our  fleet  against  industry  performance  to  identify  issues  or  advancements  that  may  impact 

performance and adjusting our maintenance and investment programs accordingly;
Negotiating strategic supply agreements with selected vendors to ensure key components are readily available 
in the event of a significant outage;
Entering into long-term arrangements with our strategic supply partners to ensure availability of critical spare 
parts; and 
Implementing long-term asset management strategies that optimize the life cycles of our existing facilities and/
or identify replacement requirements for generating assets.

Commodity Price Risk
We have exposure to movements in certain commodity prices, including the market price of electricity and fuels used to 
produce electricity in both our electricity generation and proprietary trading businesses.

We manage the financial exposure associated with fluctuations in electricity price risk by:

▪

Entering into long-term contracts that specify the price at which electricity, steam and other services are 
provided;

▪ Maintaining a portfolio of short-, medium- and long-term contracts to mitigate our exposure to short-term 

fluctuations in commodity prices;
Purchasing natural gas coincident with production for merchant facilities so spot market spark spreads are 
adequate to produce and sell electricity at a profit; and
Ensuring limits and controls are in place for our proprietary trading activities.

In  2020,  we  had  approximately  90  per  cent  (2019  –  90  per  cent)  of  production  under  short-term  and  long-term 
contracts and hedges. In the event of a planned or unplanned outage or other similar event, however, we are exposed to 
changes  in  electricity  prices  on  purchases  of  electricity  from  the  market  to  fulfil  our  supply  obligations  under  these 
short- and long-term contracts.

We manage the financial exposure to fluctuations in the cost of fuels used in production by:

▪
▪
▪

Entering into long-term contracts that specify the price at which fuel is to be supplied to our facilities;
Hedging emissions costs by entering into various emission trading arrangements; and
Selectively using hedges, where available, to set prices for fuel.

In 2020, 89 per cent (2019 – 66 per cent) of our gas consumption used in generating electricity was contractually fixed 
or passed through to our customers and 78 per cent (2019 – 76 per cent) of our purchased coal was contractually fixed.

Actual  variations  in  net  earnings  can  vary  from  calculated  sensitivities  and  may  not  be  linear  due  to  optimization 
opportunities, co-dependencies and cost mitigations, production, availability and other factors. 

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Coal Supply Risk
Having sufficient fuel available when required for generation is essential to maintaining our ability to produce electricity 
under contracts and for merchant sale opportunities. At our coal-fired facilities, input costs such as diesel, tires, the price 
and  availability  of  mining  equipment,  the  volume  of  overburden  removed  to  access  coal  reserves,  rail  rates  and  the 
location of mining operations relative to the power facilities are some of the exposures in our operations. Additionally, 
the  ability  of  the  mines  to  deliver  coal  to  the  power  facilities  can  be  impacted  by  weather  conditions  and  labour 
relations.  At  Centralia,  interruptions  at  our  supplier’s  mine,  the  availability  of  trains  to  deliver  coal  and  the  financial 
viability of our coal suppliers could affect our ability to generate electricity.

We manage coal supply risk by:

▪

▪

▪
▪

▪

Ensuring that the majority of the coal used in electrical generation in Alberta is from reserves permitted 
through coal rights we have purchased or for which we have long-term supply contracts, thereby limiting our 
exposure to fluctuations in the supply of coal from third parties;
Sourcing the coal used at Centralia from different mine sources to ensure sufficient coal is available at a 
competitive cost;
Contracting sufficient trains to deliver the coal requirements at Centralia;
Ensuring coal inventories on hand at Alberta Thermal and Centralia are at appropriate levels for usage 
requirements;
Ensuring efficient coal handling and storage facilities are in place so that the coal being delivered can be 
processed in a timely and efficient manner;

▪ Monitoring and maintaining coal specifications, and carefully matching the specifications mined with the 

requirements of our facilities;
Co-firing natural gas with coal;

▪
▪ Monitoring the financial viability of Centralia suppliers; and
Hedging diesel exposure in mining and transportation costs.
▪

Natural Gas Supply and Price Risk
Having sufficient natural gas and natural gas transportation services available so that we can blend natural gas in with 
coal  at  our  Alberta  thermal  facilities,  and  for  the  ultimate  conversion  of  those  units  to  natural  gas,  is  essential  to 
maintaining the reliability and availability of those facilities. Using natural gas at our coal-fired facilities, and ultimately 
converting these facilities to natural gas, allows us to reduce overall carbon emissions and costs, reduce the risk of coal 
opacity  issues,  and  improves  our  operating  and  sustaining  capital  costs.  Ensuring  adequate  pipeline  transportation 
service  and  natural  gas  supply  for  our  Alberta  thermal  units  may  be  impacted  by,  among  other  things,  the  timing  of 
receiving  regulatory  and  other  approvals  for  firm  transportation  commitments,  weather-related  events,  work 
stoppages, system maintenance, variability in pipeline hydraulics pressure and flows, and impacts due to other naturally 
created  events.  Pricing  of  natural  gas  is  driven  by  market  supply  and  demand  fundamentals  for  natural  gas  in  North 
America  and  globally.  We  are  exposed  to  changes  in  natural  gas  prices,  which  may  impact  the  profitability  of  our 
facilities and how the facilities are dispatched into the market.

We manage gas supply and price risk by:

▪ Working  to  ensure  that  we  have  at  least  two  pipelines  supplying  the  gas  used  in  electrical  generation  in 

Alberta;
Contracting for firm gas delivery and supply;

▪
▪ Monitoring the financial viability of gas producers and pipelines;
▪
▪ Monitoring pipeline maintenance schedules and transportation availability; and
▪

Hedging gas price exposure;

Incorporating the ability to continue using coal in some of the units as the units transition from coal to 100 per 
cent natural gas.

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Management’s Discussion and Analysis

Environmental Compliance Risk
Environmental  compliance  risks  are  risks  to  our  business  associated  with  existing  and/or  changes  in  environmental 
regulations. New emission reduction objectives for the power sector are being established by governments in Canada 
and the US. We anticipate continued and growing scrutiny by investors and other stakeholders relating to sustainability 
performance. These changes to regulations may affect our earnings by reducing the operating life of generating facilities 
and  imposing  additional  costs  on  the  generation  of  electricity  through  such  measures  as  emission  caps  or  taxes, 
requiring additional capital investments in emission capture technology or requiring us to invest in offset credits. It is 
anticipated  that  these  compliance  costs  will  increase  due  to  increased  political  and  public  attention  to  environmental 
concerns.

We manage environmental compliance risk by:

▪

▪

▪

▪

▪

▪

▪

▪

▪

▪
▪
▪

▪

Seeking continuous improvement in numerous performance metrics such as emissions, safety, land and water 
impacts, and environmental incidents;
Having an International Organization for Standardization and Occupational Health and Safety Assessment 
Series-based environmental health and safety management system in place that is designed to continuously 
improve performance;
Committing significant experienced resources to work with regulators in Canada and the US to advocate that 
regulatory changes are well-designed and cost-effective;
Developing compliance plans that address how to meet or surpass emission standards for GHGs, mercury, SO2, 
and NOx, which will be adjusted as regulations are finalized;
Purchasing emission reduction offsets;
Investing in renewable energy projects, such as wind, solar and hydro generation; and
Incorporating change-in-law provisions in contracts that allow recovery of certain compliance costs from our 
customers.

We are committed to remaining in compliance  with  all  environmental  regulations relating to operations and facilities. 
Compliance  with  both  regulatory  requirements  and  management  system  standards  is  regularly  audited  through  our 
performance assurance policy and results are reported to the GSSC.

Credit Risk
Credit  risk  is  the  risk  to  our  business  associated  with  changes  in  the  creditworthiness  of  entities  with  which  we  have 
commercial  exposures.  This  risk  results  from  the  ability  of  a  counterparty  to  either  fulfil  its  financial  or  performance 
obligations to us or where we have made a payment in advance of the delivery of a product or service. The inability to 
collect cash due to us or to receive products or services may have an adverse impact upon our net earnings and cash 
flows.

We manage our exposure to credit risk by:

▪

▪

▪

▪
▪

▪

▪

Establishing and adhering to policies that define credit limits based on the creditworthiness of counterparties, 
contract term limits and the credit concentration with any specific counterparty;
Requiring formal sign-off on contracts that include commercial, financial, legal and operational reviews;
Requiring security instruments, such as parental guarantees, letters of credit, and cash collateral or third-party 
credit  insurance  if  a  counterparty  goes  over  its  limits.  Such  security  instruments  can  be  collected  if  a 
counterparty fails to fulfil its obligation; and
Reporting our exposure using a variety of methods that allow key decision-makers to assess credit exposure by 
counterparty. This reporting allows us to assess credit limits for counterparties and the mix of counterparties 
based on their credit ratings.

If  established  credit  exposure  limits  are  exceeded,  we  take  steps  to  reduce  this  exposure,  such  as  by  requesting 
collateral,  if  applicable,  or  by  halting  commercial  activities  with  the  affected  counterparty.  However,  there  can  be  no 
assurances that we will be successful in avoiding losses as a result of a contract counterparty not meeting its obligations.

Amidst  the  current  economic  conditions  resulting  from  the  COVID-19  pandemic,  TransAlta  has  implemented  the 
following additional measures to monitor its counterparties for changes in their ability to meet obligations:

▪
▪
▪

daily monitoring of events impacting counterparty creditworthiness and counterparty credit downgrades;
weekly oversight and follow-up, if applicable, of accounts receivables; and
review and monitoring of key suppliers, counterparties and customers (i.e., offtakers).

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

As needed, additional risk mitigation tactics will be taken to reduce the risk to TransAlta. These risk mitigation tactics 
may  include,  but  are  not  limited  to,  immediate  follow-up  on  overdue  amounts,  adjusting  payment  terms  to  ensure  a 
portion  of  funds  are  received  sooner,  requiring  additional  collateral,  reducing  transaction  terms  and  working  closely 
with impacted counterparties on negotiated solutions.

Our credit risk management profile and practices have not changed materially from Dec. 31, 2019. We had no material 
counterparty losses in 2020. We continue to keep a close watch on changes and trends in the market and the impact 
these  changes  could  have  on  our  energy  trading  business  and  hedging  activities,  and  will  take  appropriate  actions  as 
required, although no assurance can be given that we will always be successful.

The following table outlines our maximum exposure to credit risk without taking into account collateral held or right of 
set-off, including the distribution of credit ratings, as at Dec. 31, 2020:

Trade and other receivables(1)
Long-term finance lease receivables
Risk management assets(1)
Loan receivable(2)
Total

Investment grade
 (%)
 92 

Non-investment grade
 (%)
 8 

 100 

 93 

 — 

 — 

 7 

 100 

Total
 (%)
 100 

 100 

 100 

 100 

Total
amount

583 

228 

692 

52 

1,555 

(1) Letters of credit and cash and cash equivalents are the primary types of collateral held as security related to these amounts. 
(2) The counterparties have no external credit ratings. 

The maximum credit exposure to any one customer for commodity trading operations, including the fair value of open 
trading positions net of any collateral held, is $22 million (2019 – $5 million).

Currency Rate Risk
We  have  exposure  to  various  currencies  as  a  result  of  our  investments  and  operations  in  foreign  jurisdictions,  the 
earnings from those operations, the acquisition of equipment and services and foreign-denominated commodities from 
foreign  suppliers,  and  our  US-denominated  debt.  Our  exposures  are  primarily  to  the  US  and  Australian  currencies. 
Changes in the values of these currencies in relation to the Canadian dollar may affect our earnings or the value of our 
foreign investments to the extent that these positions or cash flows are not hedged or the hedges are ineffective.

We manage our currency rate risk by establishing and adhering to policies that include:

▪

▪
▪

▪

▪

Hedging our net investments in US operations using US-denominated debt;
Entering into forward foreign exchange contracts to hedge future foreign-denominated expenditures including 
our US-denominated debt that is outside the net investment portfolio; and
Hedging  our  expected  foreign  operating  cash  flows.  Our  target  is  to  hedge  a  minimum  of  60  per  cent  of  our 
forecasted foreign operating cash flows over a four-year period, with a minimum of 90 per cent in the current 
year,  70  per  cent  in  the  next  year,  50  per  cent  in  the  third  year  and  30  per  cent  in  the  fourth  year.  The  US 
exposure will be managed with a combination of interest expense on our US-denominated debt and forward 
foreign  exchange  contracts  and  the  Australian  exposure  will  be  managed  with  a  combination  of  interest 
expense on our Australian-dollar denominated debt and forward foreign exchange contracts.

The  sensitivity  of  our  net  earnings  to  changes  in  foreign  exchange  rates  has  been  prepared  using  management’s 
assessment that an average $0.03 increase or decrease in the US or Australian currencies relative to the Canadian dollar 
is a reasonable potential change over the next quarter, and is shown below:

Factor

Exchange rate

Increase or decrease

Approximate impact
on net earnings

$0.03

$12 million

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Liquidity Risk
Liquidity  risk  relates  to  our  ability  to  access  capital  to  be  used  to  engage  in  trading  and  hedging  activities,  capital 
projects,  debt  refinancing  and  payment  of  liabilities,  capital  structure  and  general  corporate  purposes.  Credit  ratings 
facilitate these activities and changes in credit ratings may affect our ability and/or the cost of accessing capital markets, 
establishing  normal  course  derivative  or  hedging  transactions,  including  those  undertaken  by  our  Energy  Marketing 
segment. Counterparties enter into certain electricity and natural gas purchase and sale contracts for the purposes of 
asset-backed sales and proprietary trading. The terms and conditions of these contracts require the counterparties to 
provide  collateral  when  the  fair  value  of  the  obligation  pursuant  to  these  contracts  is  in  excess  of  any  credit  limits 
granted.  Downgrades  in  creditworthiness  by  certain  credit  rating  agencies  may  impact  our  ability  to  enter  into  these 
contracts or any ordinary course contract, decrease the credit limits granted and increase the amount of collateral that 
may  have  to  be  provided.  Certain  existing  contracts  contain  credit  rating  contingent  clauses,  that,  when  triggered, 
automatically increase costs under the contract or require additional collateral to be posted. Where the contingency is 
based on the lowest single rating, a one-level downgrade from a credit rating agency with an originally higher rating may 
not, however, trigger additional direct adverse impact.

We continue to focus on maintaining our financial position and flexibility. Credit ratings issued for TransAlta, as well as 
the corresponding rating agency outlooks, are set out in the Financial Capital section of this MD&A. Credit ratings are 
subject to revision or withdrawal at any time by the rating organization, and there can be no assurance that TransAlta’s 
credit  ratings  and  the  corresponding  outlook  will  not  be  changed,  resulting  in  the  adverse  possible  impacts  identified 
above.

As  at  Dec.  31,  2020,  we  have  liquidity  of  $2.1  billion  comprised  of  amounts  not  drawn  under  our  committed  credit 
facilities and cash on hand that is available to draw on for projects in 2021.

We manage liquidity risk by:

▪ Monitoring liquidity on trading positions;
▪

Preparing and revising longer-term financing plans to reflect changes in business plans and the market 
availability of capital;

▪

Reporting liquidity risk exposure for commodity risk management activities on a regular basis to the 
Commodity Risk & Compliance Committee, senior management and the AFRC;

▪ Maintaining a strong balance sheet; and
▪ Maintaining sufficient undrawn committed credit lines to support potential liquidity requirements.

Interest Rate Risk
Changes in interest rates can impact our borrowing costs. Changes in our cost of capital may also affect the feasibility of 
new growth initiatives.

We manage interest rate risk by establishing and adhering to policies that include:

Employing a combination of fixed and floating rate debt instruments; and

▪
▪ Monitoring the mixture of floating and fixed rate debt and adjusting to ensure efficiency.

At Dec. 31, 2020, approximately seven per cent (2019 – 11 per cent) of our total debt portfolio was subject to changes 
in floating interest rates through a combination of floating rate debt and interest rate swaps.

The sensitivity of changes in interest rates upon our net earnings is shown below:

Factor

Interest rate

Increase or
decrease (%)

30

Approximate impact
on net earnings

$1 million before tax

IBOR reform could impact interest rate risk with respect to the Corporation's credit facilities and the Poplar Creek non-
recourse bond held by a TransAlta subsidiary. The facility references LIBOR for US-dollar drawings and the Canadian 
Dollar  Offer  Rate  ("CDOR")  for  Canadian-dollar  drawings;  in  addition,  the  non-recourse  bond  references  the  three-
month CDOR. To date, no US-dollar drawings have been made on the facility and there is currently a plan to discontinue 
the six- and 12-month CDOR, which does not impact the facility or the non-recourse bond. 

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Management’s Discussion and Analysis

Management’s Discussion and Analysis

Outstanding forward starting interest rate swaps in both Canadian and US dollars should not be affected as they are set 
to settle in 2021 prior to any IBOR changes being made. The Corporation is monitoring the reform and does not expect 
any material impacts.

Project Management Risk
On capital projects, we face risks associated with cost overruns, delays and performance.

We manage project risks by:

▪
▪

▪

▪
▪

▪

▪

▪

▪

Ensuring all projects follow established corporate processes and policies;
Identifying key risks during every stage of project development and ensuring mitigation plans are factored into 
capital estimates and contingencies;
Reviewing  project  plans,  key  assumptions  and  returns  with  senior  management  prior  to  Board  of  Director 
approvals;
Consistently applying project management methodologies and processes;
Determining  contracting  strategies  that  are  consistent  with  the  project  scope  and  scale  to  ensure  key  risks, 
such as labour and technology, are managed by contractors and equipment suppliers;
Ensuring  contracts  for  construction  and  major  equipment  include  key  terms  for  performance,  delays  and 
quality backed by appropriate levels of liquidated damages;
Reviewing  projects  after  achieving  commercial  operation  to  ensure  learnings  are  incorporated  into  the  next 
project;
Negotiating contracts for construction and major equipment to lock-in key terms such as price, availability of 
long  lead  equipment,  foreign  currency  rates  and  warranties  as  much  as  is  economically  feasible  before 
proceeding with the project; and
Entering into labour agreements to provide security around labour cost, supply and productivity.

Human Resource Risk
Human resource risk relates to the potential impact upon our business as a result of changes in the workplace. Human 
resource risk can occur in several ways:

▪
▪
▪
▪
▪

Potential disruption as a result of labour action at our generating facilities;
Reduced productivity due to turnover in positions;
Inability to complete critical work due to vacant positions;
Failure to maintain fair compensation with respect to market rate changes; and
Reduced competencies due to insufficient training, failure to transfer knowledge from existing employees or 
insufficient expertise within current employees.

We manage this risk by:

▪ Monitoring industry compensation and aligning salaries with those benchmarks;
Using incentive pay to align employee goals with corporate goals;
▪
▪ Monitoring and managing target levels of employee turnover; and
▪

Ensuring new employees have the appropriate training and qualifications to perform their jobs.

In  2020,  46  per  cent  (2019  –  46  per  cent)  of  our  labour  force  was  covered  by  10  (2019  –  10)  collective  bargaining 
agreements.  In  2020,  two  (2019  –  four)  agreements  were  renegotiated.  We  anticipate  the  successful  negotiation  of 
three collective agreements in 2021.

Regulatory and Political Risk
Regulatory  and  political  risk  is  the  risk  to  our  business  associated  with  potential  changes  to  the  existing  regulatory 
structures  and  the  political  influence  upon  those  structures  within  each  of  the  jurisdictions  in  which  we  operate.  This 
risk can come from market regulation and re-regulation, increased oversight and control, structural or design changes in 
markets, or other unforeseen influences. Market rules are often dynamic and we are not able to predict whether there 
will  be  any  material  changes  in  the  regulatory  environment  or  the  ultimate  effect  of  changes  in  the  regulatory 
environment on our business. This risk includes, among other things, uncertainties associated with the development of 
carbon pricing policies and funding.

We manage these risks systematically through our Legal and Regulatory groups and our Compliance program, which is 
reviewed  periodically  to  ensure  its  effectiveness.  We  also  work  with  governments,  regulators,  electricity  system 
operators  and  other  stakeholders  to  resolve  issues  as  they  arise.  We  are  actively  monitoring  changes  to  market 
rules  and  market  design,  and  we  engage  in  industry-  and  government-agency-led  stakeholder  engagement  processes. 

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Management’s Discussion and Analysis

Through these and other avenues, we engage in advocacy and policy discussions at a variety of levels. These stakeholder 
consultations  have  allowed  us  to  engage  in  proactive  discussions  with  governments  and  regulatory  agencies  over  the 
longer term.

International  investments  are  subject  to  unique  risks  and  uncertainties  relating  to  the  political,  social  and  economic 
structures of the respective country and such country’s regulatory regime. We mitigate this risk through the use of non-
recourse financing and insurance.

Transmission Risk
Access  to  transmission  lines  and  transmission  capacity  for  existing  and  new  generation  is  key  to  our  ability  to  deliver 
energy  produced  at  our  power  facilities  to  our  customers.  The  risks  associated  with  the  aging  existing  transmission 
infrastructure in markets in which we operate continue to increase because new connections to the power system are 
consuming transmission capacity faster than it is being added by new transmission developments.

Reputation Risk
Our reputation is one of our most valued assets. Reputation risk relates to the risk associated with our business because 
of changes in opinion from the general public, private stakeholders, governments and other entities.
We manage reputation risk by:

▪

▪

Striving  as  a  neighbour  and  business  partner  in  the  regions  where  we  operate  to  build  viable  relationships 
based  on  mutual  understanding  leading  to  workable  solutions  with  our  neighbours  and  other  community 
stakeholders;
Clearly  communicating  our  business  objectives  and  priorities  to  a  variety  of  stakeholders  on  a  routine  and 
transparent basis;
Applying innovative technologies to improve our operations, work environment and environmental footprint;

▪
▪ Maintaining positive relationships with various levels of government;
▪
▪
▪
▪ Maintaining strong corporate values that support reputation risk management initiatives, including the annual 

Pursuing sustainable development as a longer-term corporate strategy;
Ensuring that each business decision is made with integrity and in line with our corporate values;
Communicating the impact and rationale of business decisions to stakeholders in a timely manner; and

Code of Conduct sign-off.

Corporate Structure Risk
We conduct a significant amount of business through subsidiaries and partnerships. Our ability to meet and service debt 
obligations is dependent upon the results of operations of our subsidiaries and partnerships and the payment of funds by 
our subsidiaries and partnerships in the form of distributions, loans, dividends or otherwise. In addition, our subsidiaries 
and partnerships may be subject to statutory or contractual restrictions that limit their ability to distribute cash to us.

Cybersecurity Risk
We rely on our information technology to process, transmit and store electronic information and data used for the safe 
operation of our assets. In today's ever-evolving cybersecurity landscape, any attacks or other breaches of network or 
information systems may cause disruptions to our business operations. Cyberattackers may use a range of techniques, 
from exploiting vulnerabilities within our user-base, to using sophisticated malicious code on a single or distributed basis 
to try to breach our network security controls. Attackers may also use a combination of techniques in their attempt to 
evade safeguards that we have in place such as firewalls, intrusion prevention systems and antivirus software that exist 
on  our  network  infrastructure  systems.  A  successful  cyberattack  may  allow  for  the  unauthorized  interception, 
destruction, use or dissemination of our information and may cause disruptions to our business operations.

We  continuously  take  measures  to  secure  our  infrastructure  against  potential  cyberattacks  that  may  damage  our 
infrastructure,  systems  and  data. TransAlta’s  cybersecurity  model  consists  of  three  pillars:  technology,  processes  and 
people.  Each  of  these  pillars  can  be  reinforced  independently  to  address  specific  cyber  risks  and  threats  that  are 
confronting TransAlta. Significant cyber risks that could pose a threat to TransAlta include phishing, ransomware, social 
engineering, supplier chain, commodity hostage, state sponsored, artificial intelligence, machine learning attacks and a 
high  risk  of  cybersecurity  employee  turnover.  Proactive  controls  and  safeguards  to  mitigate  cybersecurity  risk  and 
threats posed to the organization include:

▪

▪

▪

Leveraging  in  place  technologies  to  restrict  communication  within  TransAlta’s  networks  thus  limiting  the 
ability for adversaries to achieve their aim;
Partnering  with  a  third-party  cybersecurity  specialty  firm  to  outsource  critical  components  of  our 
cybersecurity program; 
Enhancing our policies and processes through the use of periodic reviews and table-top exercises;

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Management’s Discussion and Analysis

▪ Maintaining an effective and robust cybersecurity awareness training and campaign;
▪

Integrating cybersecurity into our business processes and performing robust cybersecurity risk assessments; 
and
Continuously  improving  our  cybersecurity  program  to  ensure  it  is  effective  in  responding  to  and  addressing 
cybersecurity risks.

▪

While we have cyber insurance (as well as systems, policies, hardware, practices, data backups and procedures designed 
to prevent or limit the effect of the security breaches of our generation facilities and infrastructure and data), there can 
be no assurance that these measures will be sufficient or that such security breaches will not occur or, if they do occur, 
that they will be adequately addressed in a timely manner. We closely monitor both preventive and detective measures 
to manage these risks.

General Economic Conditions
Changes  in  general  economic  conditions  impact  product  demand,  revenue,  operating  costs,  the  timing  and  extent  of 
capital expenditures, the net recoverable value of PP&E, financing costs, credit and liquidity risk, and counterparty risk.

Income Taxes
Our  operations  are  complex  and  located  in  several  countries.  The  computation  of  the  provision  for  income  taxes 
involves tax interpretations, regulations and legislation that are continually changing. Our tax filings are subject to audit 
by  taxation  authorities.  Management  believes  that  it  has  adequately  provided  for  income  taxes  as  required  by  IFRS, 
based on all information currently available.

The Corporation is subject to changing laws, treaties and regulations in and between countries. Various tax proposals in 
the countries we operate in could result in changes to the basis on which deferred taxes are calculated or could result in 
changes  to  income  or  non-income  tax  expense.  There  has  recently  been  an  increased  focus  on  issues  related  to  the 
taxation  of  multinational  corporations.  A  change  in  tax  laws,  treaties  or  regulations,  or  in  the  interpretation  thereof, 
could result in a materially higher income or non-income tax expense that could have a material adverse impact on the 
Corporation. 

The sensitivity of changes in income tax rates upon our net earnings is shown below:

Factor

Tax rate

Increase or
decrease (%)

Approximate impact
on net earnings

1 

$3 million

Legal Contingencies
We are occasionally named as a party in various disputes, claims and legal or regulatory proceedings that arise during 
the  normal  course  of  our  business.  We  review  each  of  these  claims,  including  the  nature  and  merits  of  the  claim,  the 
amount in dispute or claimed, and the availability of insurance coverage. There can be no assurance that any particular 
dispute, claim or proceeding will be resolved in our favour or our liabilities with respect to such claims will not have a 
material  adverse  effect  on  us  or  our  business,  operations  or  financial  results.  Please  refer  to  the  Other  Consolidated 
Analysis section of this MD&A for further details. 

Other Contingencies
We maintain a level of insurance coverage deemed appropriate by management. There were no significant changes to 
our insurance coverage during renewal of the insurance policies on Dec. 31, 2020. Our insurance coverage may not be 
available in the future on commercially reasonable terms. There can be no assurance that our insurance coverage will be 
fully adequate to compensate for potential losses incurred. In the event of a significant economic event, the insurers may 
not be capable of fully paying all claims. All insurance policies are subject to standard exclusions. Cyber coverage is not 
currently purchased.

TransAlta Corporation    |    2020  Annual Integrated Report

M125

TRANSALTA CORPORATION M125

 
 
 
Management’s Discussion and Analysis

Management’s Discussion and Analysis

Management is responsible for establishing and maintaining adequate internal control over financial reporting (‘‘ICFR’’) 
and  disclosure  controls  and  procedures  (“DC&P’’).  For  the  year  ended  Dec.  31,  2020,  the  majority  of  our  workforce 
Disclosure Controls and Procedures
supporting  and  executing  our  ICFR  and  DC&P  worked  remotely.  There  has  been  minimal  impact  to  the  design  and 
performance  of  our  internal  controls.  Management  has  reviewed  the  changes  as  a  result  of  changes  implemented  in 
response  to  COVID-19  and  is  reasonably  assured  that  adjustments  to  process  have  not  materially  affected,  or  are 
reasonably likely to materially affect, our ICFR or DC&P

ICFR  is  a  framework  designed  to  provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the 
preparation of consolidated financial statements for external purposes in accordance with IFRS. Management has used 
the  Internal  Control  –  Integrated  Framework  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway 
Commission (2013 framework) in order to assess the effectiveness of the Corporation’s ICFR.

DC&P  refer  to  controls  and  other  procedures  designed  to  ensure  that  information  required  to  be  disclosed  in  the 
reports we file or submit under securities legislation is recorded, processed, summarized and reported within the time 
frame specified in applicable securities legislation. DC&P include, without limitation, controls and procedures designed 
to ensure that information required to be disclosed by us in our reports that we file or submit under applicable securities 
legislation is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial 
Officer, as appropriate to allow timely decisions regarding our required disclosure.

Together, the ICFR and DC&P frameworks provide internal control over financial reporting and disclosure. In designing 
and  evaluating  our  ICFR  and  DC&P,  management  recognizes  that  any  controls  and  procedures,  no  matter  how  well 
designed and operated, can provide only reasonable assurance of achieving the desired control objectives and as such 
may  not  prevent  or  detect  all  misstatements,  and  management  is  required  to  apply  its  judgment  in  evaluating  and 
implementing  possible  controls  and  procedures.  Further,  the  effectiveness  of  ICFR  is  subject  to  the  risk  that  controls 
may become inadequate because of changes in conditions or that the degree of compliance with policies or procedures 
may change. 

Management  has  evaluated,  with  the  participation  of  our  Chief  Executive  Officer  and  Chief  Financial  Officer,  the 
effectiveness  of  our  ICFR  and  DC&P  as  of  the  end  of  the  period  covered  by  this  MD&A.  Based  on  the  foregoing 
evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that, as at Dec. 31, 2020, the end of 
the period covered by this MD&A, our ICFR and DC&P were effective.

M126

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION M126

Consolidated Financial Statements

Consolidated Financial Statements

Management's Report

To the Shareholders of TransAlta Corporation
The  Consolidated  Financial  Statements  and  other  financial  information  included  in  this  annual  report  have  been 
prepared  by  management.  It  is  management’s  responsibility  to  ensure  that  sound  judgment,  appropriate  accounting 
principles and methods, and reasonable estimates have been used to prepare this information. They also ensure that all 
information presented is consistent.

Management  is  also  responsible  for  establishing  and  maintaining  internal  controls  and  procedures  over  the  financial 
reporting process. The internal control system includes an internal audit function and an established business conduct 
policy  that  applies  to  all  employees.  In  addition,  TransAlta  Corporation  has  a  code  of  conduct  that  applies  to  all 
employees  and  is  signed  annually.  The  code  of  conduct  can  be  viewed  on  TransAlta’s  website  (www.transalta.com). 
Management believes the system of internal controls, review procedures and established policies provides reasonable 
assurance as to the reliability and relevance of financial reports. Management also believes that TransAlta’s operations 
are conducted in conformity with the law and with a high standard of business conduct.

The Board of Directors (the “Board”) is responsible for ensuring that management fulfills its responsibilities for financial 
reporting and internal controls. The Board carries out its responsibilities principally through its Audit, Finance and Risk 
Committee  (the  “Committee”).  The  Committee,  which  consists  solely  of  independent  directors,  reviews  the  financial 
statements  and  annual  report  and  recommends  them  to  the  Board  for  approval.  The  Committee  meets  with 
management,  internal  auditors  and  external  auditors  to  discuss  internal  controls,  auditing  matters  and  financial 
reporting issues. Internal and external auditors have full and unrestricted access to the Committee. The Committee also 
recommends the firm of external auditors to be appointed by the shareholders.

Dawn L. Farrell

President and Chief Executive Officer

 March 2, 2021

Todd Stack

Executive Vice President, Finance and 
Chief Financial Officer

TransAlta Corporation    |    2020  Annual Integrated Report

F1

TRANSALTA CORPORATION F1

 
Consolidated Financial Statements

Consolidated Financial Statements

Management’s Annual Report on Internal Control Over Financial Reporting

To the Shareholders of TransAlta Corporation
The  following  report  is  provided  by  management  in  respect  of  TransAlta  Corporation’s  (“TransAlta”)  internal  control 
over financial reporting (as defined in Rules 13a-15f and 15d-15f under the United States Securities Exchange Act of 1934 
and National Instrument 52-109 Certification of Disclosure in Issuers' Annual and Interim Filings).

TransAlta’s  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial 
reporting for TransAlta.

Management  has  used  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission  (“COSO”)  2013 
framework to evaluate the effectiveness of TransAlta’s internal control over financial reporting. Management believes 
that the COSO 2013 framework is a suitable framework for its evaluation of TransAlta’s internal control over financial 
reporting  because  it  is  free  from  bias,  permits  reasonably  consistent  qualitative  and  quantitative  measurements  of 
TransAlta’s internal controls, is sufficiently complete so that those relevant factors that would alter a conclusion about 
the  effectiveness  of  TransAlta’s  internal  controls  are  not  omitted,  and  is  relevant  to  an  evaluation  of  internal  control 
over financial reporting.

Internal control over financial reporting cannot provide absolute assurance of achieving financial reporting objectives 
because of its inherent limitations. Internal control over financial reporting is a process that involves human diligence 
and compliance and is subject to lapses in judgment and breakdowns resulting from human failures. Internal control over 
financial reporting also can be circumvented by collusion or improper overrides. Because of such limitations, there is a 
risk that material misstatements may not be prevented or detected on a timely basis by internal control over financial 
reporting. However, these inherent limitations are known features of the financial reporting process, and it is possible to 
design safeguards into the process to reduce, though not eliminate, this risk.

TransAlta proportionately consolidates the joint operations of the Sheerness Generating Station, and Pioneer Pipeline 
Limited  Partnership  and  we  equity  account  for  our  investments  in  SP  Skookumchuck  Investment,  LLC  and  EMG 
International,  LLC  in  accordance  with  International  Financial  Reporting  Standards.  Management  does  not  have  the 
contractual  ability  to  assess  the  internal  controls  of  these  joint  arrangements  and  associates.  Once  the  financial 
information  is  obtained  from  these  joint  arrangements  and  associates  it  falls  within  the  scope  of  TransAlta’s  internal 
controls framework. Management’s conclusion regarding the effectiveness of internal controls does not extend to the 
internal controls at the transactional level of these joint arrangements and associates.

Included  in  the  2020  Consolidated  Financial  Statements  of  TransAlta  for  joint  operations  and  equity  accounted 
investments  are  $481  million  and  $394  million  of  total  and  net  assets,  respectively,  as  of  December  31,  2020,  and 
$112 million and $6 million of revenues and net earnings (loss), respectively, for the year then ended.  

Management has assessed the effectiveness of TransAlta’s internal control over financial reporting, as at Dec. 31, 2020, 
and has concluded that such internal control over financial reporting is effective.

Ernst  &  Young  LLP,  who  has  audited  the  consolidated  financial  statements  of  TransAlta  for  the  year  ended Dec.  31, 
2020, has also issued a report on internal control over financial reporting under the standards of the Public Company 
Accounting Oversight Board (United States). This report is located on the following page of this Annual Report.

Dawn L. Farrell

President and Chief Executive Officer

  March 2, 2021

Todd Stack

Executive Vice President, Finance and 
Chief Financial Officer

F2

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F2

Consolidated Financial Statements

Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm

To the Shareholders and Directors of TransAlta Corporation
Opinion on Internal Control Over Financial Reporting 
We have audited TransAlta Corporation’s internal control over financial reporting as of December 31, 2020, based on 
criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations 
of  the  Treadway  Commission  (2013  framework)  (the  “COSO  criteria”).  In  our  opinion,  TransAlta  Corporation 
maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based 
on the COSO criteria.

As  indicated  in  the  accompanying  Management’s  Annual  Report  on  Internal  Control  over  Financial  Reporting, 
management’s  assessment  of  and  conclusion  on  the  effectiveness  of  internal  control  over  financial  reporting  did  not 
include  the  internal  controls  of  the  joint  operations  and  equity  accounted  investments  of  the  Sheerness  Generating 
Station, Pioneer Pipeline Limited Partnership, SP Skookumchuk Investment, LLC and EMG International, LLC,  which are 
included  in  the  2020  consolidated  financial  statements  of  TransAlta  Corporation  and  constituted  $481  million  and 
$394 million of total and net assets, respectively, as of December 31, 2020, and $112 million and $6 million of revenues 
and net earnings (loss), respectively, for the year then ended.  Our audit of internal control over financial reporting of 
TransAlta  Corporation  also  did  not  include  an  evaluation  of  the  internal  control  over  financial  reporting  of  the  joint 
operations  and  equity  accounted  investments  of  the  Sheerness  Generating  Station,  Pioneer  Pipeline  Limited 
Partnership, SP Skookumchuck Investment, LLC and EMG International, LLC.

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United 
States) (“PCAOB”), the consolidated statements of financial position of TransAlta Corporation as of December 31, 2020 
and  2019,  and  the  related  consolidated  statements  of  earnings  (loss),  comprehensive  income  (loss),  changes  in  equity 
and cash flows for each of the three years in the period ended December 31, 2020, and the related notes and our report 
dated March 2, 2021 expressed an unqualified opinion thereon.

Basis for Opinion
TransAlta  Corporation’s  management  is  responsible  for  maintaining  effective  internal  control  over  financial  reporting 
and  for  its  assessment  of  the  effectiveness  of  internal  control  over  financial  reporting  included  in  the  accompanying 
Management’s Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion 
on TransAlta Corporation’s internal control over financial reporting based on our audit. We are a public accounting firm 
registered with the PCAOB and are required to be independent with respect to TransAlta Corporation in accordance 
with the US federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission 
and the PCAOB. 

We  conducted  our  audit  in  accordance  with  the  standards  of  the  PCAOB.  Those  standards  require  that  we  plan  and 
perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was 
maintained in all material respects. 

Our  audit  included  obtaining  an  understanding  of  internal  control  over  financial  reporting,  assessing  the  risk  that  a 
material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the 
assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that 
our audit provides a reasonable basis for our opinion.  

TransAlta Corporation    |    2020  Annual Integrated Report

F3

TRANSALTA CORPORATION F3

Consolidated Financial Statements

Consolidated Financial Statements

Definition and Limitations of Internal Control Over Financial Reporting 
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding 
the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with 
generally accepted accounting principles. A company’s internal control over financial reporting includes those policies 
and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the 
transactions  and  dispositions  of  the  assets  of  the  corporation;  (2)  provide  reasonable  assurance  that  transactions  are 
recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting 
principles, and that receipts and expenditures of the corporation are being made only in accordance with authorizations 
of management and directors of the corporation; and (3) provide reasonable assurance regarding prevention or timely 
detection of unauthorized acquisition, use, or disposition of the corporation’s assets that could have a material effect on 
the financial statements. 

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. 
Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become 
inadequate  because  of  changes  in  conditions,  or  that  the  degree  of  compliance  with  the  policies  or  procedures  may 
deteriorate.

Chartered Professional Accountants

Calgary, Canada
March 2, 2021

F4

TransAlta Corporation    |    2020  Annual Integrated Report

F4 TRANSALTA CORPORATION

Consolidated Financial Statements

Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm

To the Shareholders and Directors of TransAlta Corporation
Opinion on the Consolidated Financial Statements 
We  have  audited  the  accompanying  consolidated  statements  of  financial  position  of  TransAlta  Corporation  (the 
“Corporation”)  as  of  December  31,  2020  and  2019,  the  related  consolidated  statements  of  earnings  (loss), 
comprehensive income (loss), changes in equity and cash flows, for each of the years then ended, and the related notes 
(collectively referred to as the “consolidated financial statements“). In our opinion, the consolidated financial statements 
present fairly, in all material respects, the financial position of TransAlta Corporation at December 31, 2020 and 2019, 
and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in 
conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board. 

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United 
States) (“PCAOB”), TransAlta Corporation’s internal control over financial reporting as of December 31, 2020, based on 
criteria  established  in  Internal  Control  –  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring 
Organizations  of  the  Treadway  Commission  (“COSO”),  and  our  report  dated  March  2,  2021  expressed  an  unqualified 
opinion thereon.

Basis for Opinion
These  consolidated  financial  statements  are  the  responsibility  of  TransAlta  Corporation‘s  management.  Our 
responsibility is to express an opinion on TransAlta Corporation‘s consolidated financial statements based on our audits. 
We  are  a  public  accounting  firm  registered  with  the  PCAOB  and  are  required  to  be  independent  with  respect  to 
TransAlta Corporation in accordance with the US federal securities laws and the applicable rules and regulations of the 
Securities and Exchange Commission and the PCAOB. 

We  conducted  our  audits  in  accordance  with  the  standards  of  the  PCAOB.  Those  standards  require  that  we  plan  and 
perform  the  audit  to  obtain  reasonable  assurance  about  whether  the  consolidated  financial  statements  are  free  of 
material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of 
material  misstatement  of  the  consolidated  financial  statements,  whether  due  to  error  or  fraud,  and  performing 
procedures  that  respond  to  those  risks.  Such  procedures  included  examining,  on  a  test  basis,  evidence  regarding  the 
amounts  and  disclosures  in  the  consolidated  financial  statements.  Our  audits  also  included  evaluating  the  accounting 
principles  used  and  significant  estimates  made  by  management,  as  well  as  evaluating  the  overall  presentation  of  the 
consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion. 

Critical Audit Matters
The  critical  audit  matters  communicated  below  are  matters  arising  from  the  current  period  audit  of  the  financial 
statements  that  were  communicated  or  required  to  be  communicated  to  the  audit  committee  and  that:  (1)  relate  to 
accounts  or  disclosures  that  are  material  to  the  financial  statements  and  (2)  involved  our  especially  challenging, 
subjective or complex judgments. The communication of critical audit matters does not alter in any way our opinion on 
the  consolidated  financial  statements,  taken  as  a  whole,  and  we  are  not,  by  communicating  the  critical  audit  matters 
below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

TransAlta Corporation    |    2020  Annual Integrated Report

F5

TRANSALTA CORPORATION F5

Consolidated Financial Statements

Consolidated Financial Statements

Long-Lived Assets within the Centralia Thermal Plant cash generating unit (“CGU”) & Goodwill related to the 
Wind and Solar segment

Description of 
the Matter

As disclosed in notes 2(I), 2(J), 2(Z)(II), 18 and 21 of the consolidated financial statements, the Corporation owns 
significant power generation assets which are required to be reviewed for indicators of impairment at the CGU 
level and has recognized goodwill from historical acquisitions which must be tested for impairment at least 
annually. Long lived assets for the Centralia Thermal Plant CGU are included in the Centralia segment which 
amounts to $260 million. Goodwill related to the Wind and Solar segment amounts to $175 million.

How We 
Addressed the 
Matter in Our 
Audit

We identified the assessment of indicators of impairment for the Centralia Thermal Plant CGU as a critical audit 
matter because it involves auditing the judgment applied by management to assess various external and internal 
sources of information, more specifically if significant changes with an adverse effect on the Corporation have 
taken place during the year, or will take place in the near future, in the market or economic environment. 
Determining the recoverable amount for the Wind and Solar segment for the purposes of the annual goodwill 
impairment test was identified as a critical audit matter due to the significant estimation uncertainty and judgement 
applied by management in determining the recoverable amount, primarily due to the sensitivity of the significant 
assumptions to the future cash flows and the effect that changes in these assumptions would have on the 
recoverable amount. The estimates with a high degree of subjectivity include forecasted future cash flows, 
generation profiles, and commodity prices, and determining the appropriate discount rate.

We obtained an understanding of management’s process for performing their assessment of indicators of 
impairment and the estimation of the recoverable amount. We evaluated the design and tested the operating 
effectiveness of controls over the Corporation’s processes to identify indicators and determine the recoverable 
amount. Our audit procedures to test the indicators assessment included, among others, evaluating the 
Corporation’s determination of future commodity prices by comparing them to externally available third-party 
future commodity price estimates. Our audit procedures to test the Corporation’s recoverable amount of the Wind 
and Solar segment included, among others, comparing the significant assumptions used to estimate cash flows to 
current contracts with external parties and historical trends, and obtaining historical power generation data to 
evaluate future generation forecasts. We assessed the historical accuracy of management’s forecasts by comparing 
them with actual results and performed a sensitivity analysis to evaluate the assumptions that were most 
significant to the determination of the recoverable amounts. We evaluated the Corporation’s determination of 
future commodity prices by comparing them to externally available third-party future commodity price estimates. 
We also involved our internal valuation specialist to assist in our evaluation of the discount rates, which involved 
benchmarking the inputs against available market data.

Valuation of Level III Derivative Instruments

Description of 
the Matter

As disclosed in notes 2(Z)(V) and 15 of the consolidated financial statements, the Corporation enters into 
transactions that are accounted for as derivative financial instruments and are recorded at fair value. The valuation 
of derivative instruments classified as level III are determined using assumptions that are not readily observable. As 
at December 31, 2020 the Corporation’s derivative financial instruments classified as level III were $582 million.

How We 
Addressed the 
Matter in Our 
Audit

Auditing the determination of fair value of level III derivative instruments that rely on significant unobservable 
inputs can be complex and relies on judgments and estimates concerning future commodity prices, discount rates, 
volatility, unit availability and demand profiles, and can fluctuate significantly depending on market conditions. 
Therefore, such determination of fair value was identified as a critical audit matter.

We obtained an understanding of the Corporation’s processes and we evaluated and tested the design and 
operating effectiveness of internal controls addressing the determination and review of inputs used in establishing 
level III fair values. Our audit procedures included, among others, testing a sample of level III derivative instrument 
internal models used by management and evaluating the significant assumptions utilized. We also compared 
management's future pricing assumptions, credit valuation adjustments, and liquidity assumptions to third-party 
data as well as comparing terms such as volumes and timing to executed commodity contracts. We compared the 
unit availability and demand profile assumptions to historical information. We performed a sensitivity analysis to 
evaluate the assumptions that were most significant to the determination of level III fair value. For a sample of level 
III derivative instruments, we involved our internal valuation specialist to assist in our evaluation of the 
appropriateness of the discount rates by evaluating the key assumptions and methodologies.

Chartered Professional Accountants
We have served as auditors of TransAlta Corporation and its predecessor entities since 1947.
Calgary, Canada
March 2, 2021

F6

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F6

Consolidated Financial Statements
Consolidated Financial Statements

Year ended Dec. 31 (in millions of Canadian dollars except where noted)
Consolidated Statements of Earnings (Loss)

2020

2019

2018

Revenues (Note 5)

Fuel, carbon compliance and purchased power (Note 6)

Gross margin

Operations, maintenance and administration (Note 6)

Depreciation and amortization

Asset impairment charge (Note 7)

Gain on termination of Keephills 3 coal rights contract (Note 4(R))

Taxes, other than income taxes

Termination of Sundance B and C PPAs (Note 4(S))

Net other operating income (Note 9)

Operating income

Equity income (Note 10)

Finance lease income

Net interest expense (Note 11)

Foreign exchange gain (loss)

Gain on sale of assets and other (Note 4(R) and 18)

Earnings (loss) before income taxes

Income tax expense (recovery) (Note 12)

Net earnings (loss)

Net earnings (loss) attributable to:

TransAlta shareholders

Non-controlling interests (Note 13)

Net earnings (loss) attributable to TransAlta shareholders

Preferred share dividends (Note 28)

Net earnings (loss) attributable to common shareholders

Weighted average number of common shares outstanding in the year (millions)

Net earnings (loss) per share attributable to common shareholders, basic and diluted
   (Note 27)

See accompanying notes.

2,101 

968 

1,133 

472 

654 

84 

— 

33 

— 

(11)   

(99)   

1 

7 

(238)   

17 

9 

(303)   

(50)   

(253)   

(287)   

34 

(253)   

(287)   

49 

(336)   

275 

2,347 

1,086 

1,261 

475 

590 

25 

(88)   

29 

(56)   

(49)   

335 

— 

6 

(179)   

(15)   

46 

193 

17 

176 

82 

94 

176 

82 

30 

52 

283 

2,249 

1,100 

1,149 

515 

574 

73 

— 

31 

(157) 

(47) 

160 

— 

8 

(250) 

(15) 

1 

(96) 

(6) 

(90) 

(198) 

108 

(90) 

(198) 

50 

(248) 

287 

(1.22)   

0.18 

(0.86) 

TransAlta Corporation    |    2020  Annual Integrated Report

F7
TRANSALTA CORPORATION F7

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consolidated Financial Statements

Consolidated Financial Statements

Year ended Dec. 31 (in millions of Canadian dollars)
Consolidated Statements of Comprehensive Income (Loss)
Net earnings (loss)

2020

Other comprehensive income (loss)

Net actuarial gains (losses) on defined benefit plans, net of tax(1)
  Losses on derivatives designated as cash flow hedges, net of tax

Total items that will not be reclassified subsequently to net earnings

  Gains (losses) on translating net assets of foreign operations, net of tax

Gains (losses) on financial instruments designated as hedges of foreign operations, 
  net of tax
Gains (losses) on derivatives designated as cash flow hedges, net of tax(2)

Reclassification of gains on derivatives designated as cash flow hedges to net earnings, 
  net of tax(3)

Total items that will be reclassified subsequently to net earnings

Other comprehensive income (loss)

Total comprehensive income (loss)

Total comprehensive income (loss) attributable to:

TransAlta shareholders

Non-controlling interests (Note 13)

(253)   

(11)   

(1)   

(12)   

(11)   

11 

20 

(110)   

(90)   

(102)   

(355)   

(439)   

84 

(355)   

2019

176 

2018

(90) 

(26)   

— 

(26)   

(59)   

21 

61 

(42)   

(19)   

(45)   

131 

54 

77 

131 

15 

— 

15 

84 

(41) 

(8) 

(46) 

(11) 

4 

(86) 

(210) 

124 

(86) 

(1) Net of income tax recovery of $3 million for the year ended Dec. 31, 2020 (2019 — $7 million recovery, 2018 — $5 million expense).
(2) Net of income tax expense of $8 million for the year ended Dec. 31, 2020 (2019 —$16 million expense, 2018 — $1 million recovery).
(3) Net of reclassification of income tax expense of $31 million for the year ended Dec. 31, 2020 (2019 —$10 million expense,  2018 — $11 million expense).

See accompanying notes.

F8

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F8

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
As at Dec. 31 (in millions of Canadian dollars)
Cash and cash equivalents
Consolidated Statements of Financial Position
Restricted cash (Note 24)
Trade and other receivables (Note 14)
Prepaid expenses
Risk management assets (Note 15 and 16)
Inventory (Note 17)
Assets held for sale (Note 4(B) and 7)

Investments (Note 10)
Long-term portion of finance lease receivables (Note 8)
Risk management assets (Note 15 and 16)
Property, plant and equipment (Note 18)

Cost
Accumulated depreciation

Right-of-use assets (Note 19)
Intangible assets (Note 20)
Goodwill (Note 21)
Deferred income tax assets (Note 12)
Other assets (Note 22)
Total assets

Accounts payable and accrued liabilities
Current portion of decommissioning and other provisions (Note 23)
Risk management liabilities (Note 15 and 16)
Current portion of contract liabilities (Note 5)
Income taxes payable
Dividends payable (Note 27 and 28)
Current portion of long-term debt and lease liabilities (Note 24)

Credit facilities, long-term debt and lease liabilities (Note 24)
Exchangeable securities (Note 25)
Decommissioning and other provisions (Note 23)
Deferred income tax liabilities (Note 12)
Risk management liabilities (Note 15 and 16)
Contract liabilities (Note 5)
Defined benefit obligation and other long-term liabilities (Note 26)
Equity

Common shares (Note 27)
Preferred shares (Note 28)
Contributed surplus
Deficit
Accumulated other comprehensive income (Note 29)

Equity attributable to shareholders
Non-controlling interests (Note 13)
Total equity
Total liabilities and equity

Significant and subsequent events (Note 4)
Commitments and contingencies (Note 36) 

Consolidated Financial Statements

Consolidated Financial Statements

2020
703 
71 
583 
31 
171 
238 
105 
1,902 
100 
228 
521 

13,398 
(7,576) 
5,822 
141 
313 
463 
51 
206 
9,747 

599 
59 
94 
1 
18 
59 
105 
935 

3,256 
730 
614 
396 
68 
14 
298 

2,896 
942 
38 
(1,826) 
302 
2,352 
1,084 
3,436 
9,747 

2019
411 
32 
462 
19 
166 
251 
— 
1,341 
— 
176 
640 

13,395 
(7,188) 
6,207 
146 
318 
464 
18 
198 
9,508 

413 
58 
81 
1 
14 
37 
513 
1,117 

2,699 
326 
488 
472 
29 
14 
301 

2,978 
942 
42 
(1,455) 
454 
2,961 
1,101 
4,062 
9,508 

On behalf of the Board:

See accompanying notes.

John P. Dielwart
Director

Beverlee F. Park
Director

TransAlta Corporation    |    2020  Annual Integrated Report

F9

TRANSALTA CORPORATION F9

Consolidated Financial Statements

Consolidated Financial Statements

(in millions of Canadian dollars)
Consolidated Statements of Changes in Equity
Common
shares

Preferred
shares

surplus Deficit

Contributed

Balance, Dec. 31, 2018

$3,059

$942

$11 $ (1,496) 

Adjustments on implementation of
  IFRS 16 

— 

Adjusted balance as at Jan. 1, 2019

3,059 

Net earnings

Other comprehensive income (loss):

Net losses on translating net 
  assets of foreign operations, 
  net of hedges and of tax

Net gains on derivatives 
  designated as cash flow hedges, 
  net of tax

Net actuarial losses on defined
  benefits plans, net of tax

Intercompany FVOCI investments

Total comprehensive income (loss)

Common share dividends

Preferred share dividends

— 

— 

— 

— 

— 

— 

— 

Shares purchased under NCIB

(83) 

Changes in non-controlling
  interests in TransAlta
  Renewables (Note 4(V) and 13)

Effect of share-based payment 
  plans

Distributions paid, and payable, to 
  non-controlling interests

— 

2 

— 

— 

942 

— 

— 

3 

11 

(1,493) 

— 

82 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

31 

— 

— 

— 

— 

— 

82 

(34) 

(30) 

15 

5 

— 

— 

Balance, Dec. 31, 2019

Net earnings (loss)

2,978 

— 

942 

— 

42 

(1,455) 

— 

(287) 

Other comprehensive income (loss):

Net losses on derivatives 
  designated as cash flow hedges, 
  net of tax

Net actuarial losses on defined
  benefits plans, net of tax

Intercompany FVOCI investments

Total comprehensive income (loss)

Common share dividends

Preferred share dividends

— 

— 

— 

— 

— 

Shares purchased under NCIB

(79) 

Changes in non-controlling
  interests in TransAlta
  Renewables

Effect of share-based payment 
  plans (Note 30)

Distributions paid, and payable, to 
  non-controlling interests

— 

(3) 

— 

— 

— 

— 

— 

— 

—

— 

—

— 

— 

— 

— 

— 

— 

— 

— 

(4) 

— 

— 

— 

— 

(287) 

(58) 

(49) 

18 

5 

—

— 

Accumulated other
comprehensive

income(1) Attributable to
shareholders
$2,997

$481

Attributable 
to non-
controlling
interests

Total

$1,137 $4,134

— 

481 

— 

(38)

19 

(26)

17 

(28)

— 

— 

— 

1 

— 

— 

454 

— 

(91)

(11)

(50)

(152) 

— 

— 

— 

— 

— 

— 

3 

3,000 

82 

— 

3 

1,137 

4,137 

94 

176 

(38)

19 

(26)

17 

54

(34)

(30)

(68)

6 

33 

— 

2,961 

(287)

(91)

(11)

(50)

(439)

(58)

(49)

(61)

5 

(7)

— 

— 

(38) 

— 

— 

(17)

77 

— 

— 

— 

22 

— 

19 

(26) 

— 

131 

(34) 

(30) 

(68) 

28 

33 

(135)

(135)

1,101 

4,062 

34

(253) 

— 

(91) 

— 

50 

84

—

—

—

(11) 

— 

(355) 

(58) 

(49) 

(61) 

15 

20 

—

(7) 

(116)

(116)

Balance, Dec. 31, 2020

2,896 

942 

38 

  (1,826) 

302 

2,352 

1,084 

3,436 

(1) Refer to Note 29 for details on components of, and changes in, accumulated other comprehensive income (loss).
See accompanying notes.

F10

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F10

Year ended Dec. 31 (in millions of Canadian dollars)
Consolidated Statements of Cash Flows
Operating activities
Net earnings (loss)

Depreciation and amortization (Note 37)

Net gain on sale of assets (Note 4(I) Note 4(R))

Accretion of provisions (Note 23)

Decommissioning and restoration costs settled (Note 23)

Deferred income tax recovery (Note 12)

Unrealized (gain) loss from risk management activities

Unrealized foreign exchange loss

Provisions

Asset impairment (Note 7)

Equity income, net of distributions from Joint Ventures

Other non-cash items

Cash flow from operations before changes in working capital

Change in non-cash operating working capital balances (Note 33)

Cash flow from operating activities

Investing activities

Additions to property, plant and equipment (Note 18 and 37)

Additions to intangible assets (Note 20 and 37)

Restricted cash (Note 24)

Loan receivable (Note 22)

Acquisitions, net of cash acquired  (Note 4)

Acquisition of investments (Note 10)

Investment in the Pioneer Pipeline

Proceeds on sale of property, plant and equipment

Realized gains on financial instruments

Decrease in finance lease receivable

Other

Change in non-cash investing working capital balances

Cash flow used in investing activities

Financing activities

Net increase (decrease) in borrowings under credit facilities (Note 24)

Repayment of long-term debt (Note 24)

Issuance of long-term debt (Note 24)

Issuance of exchangeable securities (Note 25)

Dividends paid on common shares (Note 27)

Dividends paid on preferred shares (Note 28)

Net proceeds on sale of non-controlling interest in subsidiary (Note 4(W))

Repurchase of common shares under NCIB (Note 27)

Realized gains on financial instruments

Distributions paid to subsidiaries' non-controlling interests (Note 13)

Decrease in lease liabilities (Note 24)

Financing fees and other

Change in non-cash financing working capital balances

Cash flow from (used in) financing activities

Cash flow from (used in) operating, investing, and financing activities

Effect of translation on foreign currency cash

Increase (decrease) in cash and cash equivalents

Cash and cash equivalents, beginning of year

Cash and cash equivalents, end of year

Cash income taxes paid

Cash interest paid

See accompanying notes.

Consolidated Financial Statements

Consolidated Financial Statements

2020

2019

2018

(253)   
798 

(9)   
30 
(18)   
(85)   
42 

1 

9 

84 
(1)   
15 

613 

89 

702 

(486)   
(14)   
(39)   
(5)   
(32)   
(102)   
— 

6 

2 

17 
(12)   
(22)   

176 

709 

(45)   

23 

(34)   

(18)   

(32)   

13 

13 

25 

— 

(102)   

728 

121 

849 

(417)   

(14)   

34 

(10)   

(117)   

— 

(83)   

13 

3 

24 

23 

32 

(687)   

(512)   

(106)   
(489)   
753 

400 
(47)   
(39)   
— 
(57)   
3 
(97)   
(25)   
(11)   
(13)   

272 

287 

5 

292 

411 

703 

36 

201 

(119)   

(96)   

166 

350 

(45)   

(40)   

— 

(68)   

— 

(106)   

(21)   

(35)   

— 

(14)   

323 

(1)   

322 

89 

411 

35 

185 

(90) 

710 

— 

24 

(31) 

(34) 

30 

28 

7 

73 

— 

147 

864 

(44) 

820 

(277) 

(20) 

(35) 

1 

(30) 

— 

(15) 

2 

2 

59 

15 

(96) 

(394) 

312 

(1,179) 

345 

— 

(46) 

(40) 

144 

(23) 

48 

(165) 

(18) 

(31) 

2 

(651) 

(225) 

— 

(225) 

314 

89 

87 

188 

TransAlta Corporation    |    2020  Annual Integrated Report

F11

TRANSALTA CORPORATION F11

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

(Tabular amounts in millions of Canadian dollars, except as otherwise noted)

Notes to Consolidated Financial Statements

TransAlta Corporation (“TransAlta” or the “Corporation”) was incorporated under the Canada Business Corporations Act 
1. Corporate Information
in  March  1985.  The  Corporation  became  a  public  company  in  December  1992.  Its  head  office  is  located  in  Calgary, 
A. Description of the Business
Alberta.

I. Generation Segments
The six generation segments of the Corporation are as follows: Hydro, Wind and Solar, North American Gas, Australian 
Gas,  Alberta  Thermal, and  Centralia.  The  Corporation  directly  or  indirectly  owns  and  operates  hydro,  wind  and  solar, 
natural gas-fired and coal-fired facilities, related mining operations and natural gas pipeline operations in Canada, the 
United States (“US”) and Australia. The Wind and Solar segment includes the financial results, on a proportionate basis, 
of our investment in SP Skookumchuck Investment LLC. Revenues are derived from the availability and production of 
electricity  and  steam  as  well  as  ancillary  services  such  as  system  support.  Electricity  sales  made  by  the  Corporation’s 
commercial and industrial group are assumed to be sourced from the Corporation’s production and have been included 
in the Alberta Thermal segment.

II. Energy Marketing Segment
The  Energy  Marketing  segment  derives  revenue  and  earnings  from  the  wholesale  trading  of  electricity  and  other 
energy-related commodities and derivatives.

Energy Marketing manages available generating capacity as well as the fuel and transmission needs of the generation 
segments by utilizing contracts of various durations for the forward sales of electricity and for the purchase of natural 
gas and transmission capacity. Energy Marketing is also responsible for recommending portfolio optimization decisions. 
The results of these optimization activities are included in each generation segment.

III. Corporate and Other Segment
The  Corporate  and  Other  segment  includes  the  Corporation’s  central  finance,  legal,  administrative,  corporate 
development  and  investor  relation  functions.  Activities  and  charges  directly  or  reasonably  attributable  to  other 
segments  are  allocated  thereto.  In  2020,  the  Corporate  and  Other  segment  also  includes  the  investment  in  EMG 
International, LLC ("EMG"), a wastewater treatment processing company.

These consolidated financial statements have been prepared by management in compliance with International Financial 
Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”).
B. Basis of Preparation

The consolidated financial statements have been prepared on a historical cost basis except for financial instruments and 
assets held for sale, which are measured at fair value, as explained in the following accounting policies.

These consolidated financial statements were authorized for issue by TransAlta's Board of Directors (the "Board") on 
March 2, 2021.

The  consolidated  financial  statements  include  the  accounts  of  the  Corporation  and  the  subsidiaries  that  it  controls. 
Control  exists  when  the  Corporation  is  exposed,  or  has  rights,  to  variable  returns  from  its  involvement  with  the 
C. Basis of Consolidation
subsidiary and has the ability to affect the returns through its power over the subsidiary. The financial statements of the 
subsidiaries are prepared for the same reporting period and apply consistent accounting policies as the parent company.

I. Revenue from Contracts with Customers
2. Significant Accounting Policies
The  majority  of  the  Corporation’s  revenues  from  contracts  with  customers  are  derived  from  the  sale  of  generation 
A. Revenue Recognition
capacity,  electricity,  thermal  energy,  environmental  attributes  and  byproducts  of  power  generation.  The  Corporation 
evaluates whether the contracts it enters into meet the definition of a contract with a customer at the inception of the 
contract and on an ongoing basis if there is an indication of significant changes in facts and circumstances. Revenue is 
measured based on the transaction price specified in a contract with a customer. Revenue is recognized when control of 
the good or services is transferred to the customer. For certain contracts, revenue may be recognized at the invoiced 
amount, as permitted using the invoice practical expedient, if such amount corresponds directly with the Corporation’s 
performance to date. The Corporation excludes amounts collected on behalf of third parties from revenue.

F12

TransAlta Corporation    |    2020  Annual Integrated Report

F12 TRANSALTA CORPORATION

 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Performance Obligations
Each promised good or service is accounted for separately as a performance obligation if it is distinct. The Corporation’s 
contracts may contain more than one performance obligation.

Transaction Price
The  Corporation  allocates  the  transaction  price  in  the  contract  to  each  performance  obligation.  Transaction  price 
allocated  to  performance  obligations  may  include  variable  consideration.  Variable  consideration  is  included  in  the 
transaction price for each performance obligation when it is highly probable that a significant reversal of the cumulative 
variable revenue will not occur. Variable consideration is assessed at each reporting period to determine whether the 
constraint  is  lifted.  The  consideration  contained  in  some  of  the  Corporation's  contracts  with  customers  is  primarily 
variable,  and  may  include  both  variability  in  quantity  and  pricing,  such  as:  revenues  can  be  dependent  upon  future 
production volumes that are driven by customer or market demand or by the operational ability of the plant; revenues 
can be dependent upon the variable cost of producing the energy; revenues can be dependent upon market prices; and 
revenues can be subject to various indices and escalators. 

When  multiple  performance  obligations  are  present  in  a  contract,  transaction  price  is  allocated  to  each  performance 
obligation  in  an  amount  that  depicts  the  consideration  the  Corporation  expects  to  be  entitled  to  in  exchange  for 
transferring the good or service. The Corporation estimates the amount of the transaction price to allocate to individual 
performance  obligations  based  on  their  relative  stand-alone  selling  prices,  which  is  primarily  estimated  based  on  the 
amounts that would be charged to customers under similar market conditions.

Recognition
The nature, timing of recognition of satisfied performance obligations and payment terms for the Corporation’s goods 
and services are described below:
Good or Service

Description

Capacity

Contract Power

Thermal Energy

Environmental Attributes

Generation Byproducts

Capacity  refers  to  the  availability  of  an  asset  to  deliver  goods  or  services.  Customers 
typically  pay  for  capacity  for  each  defined  time  period  (i.e.,  monthly)  in  an  amount 
representative of availability of the asset for the defined time period. Obligations to deliver 
capacity  are  satisfied  over  time  and  revenue  is  recognized  using  a  time-based  measure. 
Contracts  for  capacity  are  typically  long-term  in  nature.  Payments  are  typically  received 
from customers on a monthly basis.

The sale of contract power refers to the delivery of units of electricity to a customer under 
the terms of a contract. Customers pay a contractually specified price for the output at the 
end of predefined contractual periods (i.e., monthly). Obligations to deliver electricity are 
satisfied  over  time  and  revenue  is  recognized  using  a  units-based  output  measure  (i.e., 
megawatt hours). Contracts for power are typically long-term in nature and payments are 
typically received on a monthly basis.
Thermal energy refers to the delivery of units of steam to a customer under the terms of a 
contract.  Customers  pay  a  contractually  specified  price  for  the  output  at  the  end  of 
predefined  contractual  periods  (i.e.,  monthly).  Obligations  to  deliver  steam  are  satisfied 
over time and revenue is recognized using a units-based output measure (i.e., gigajoules).  
Contracts  for  thermal  energy  are  typically  long-term  in  nature.  Payments  are  typically 
received from customers on a monthly basis.

Environmental  attributes  refers  to  the  delivery  of  renewable  energy  certificates,  green 
attributes and other similar items. Customers may contract for environmental attributes in 
conjunction with the purchase of power, in which case the customer pays for the attributes 
in the month subsequent to the delivery of the power. Alternatively, customers pay upon 
delivery  of  the  environmental  attributes.  Obligations  to  deliver  environmental  attributes 
are satisfied at a point in time, generally upon delivery of the item. 

Generation  byproducts  refers  to  the  sale  of  byproducts  from  the  use  of  coal  in  the 
Corporation’s  Canadian  and  US  coal  operations,  and  the  sale  of  coal  to  third  parties.  
Obligations to deliver byproducts are satisfied at a point in time, generally upon delivery of 
the item. Payments are received upon satisfaction of delivery of the byproducts.

A contract liability is recorded when the Corporation receives consideration before the performance obligations have 
been  satisfied.  A  contract  asset  is  recorded  when  the  Corporation  has  rights  to  consideration  for  the  completion  of  a 
performance  obligation  before  it  has  invoiced  the  customer.  The  Corporation  recognizes  unconditional  rights  to 
consideration  separately  as  a  receivable.  Contract  assets  and  receivables  are  evaluated  at  each  reporting  period  to 
determine whether there is any objective evidence that they are impaired.

The Corporation recognizes a significant financing component where the timing of payment from the customer differs 
from  the  Corporation’s  performance  under  the  contract  and  where  that  difference  is  the  result  of  the  Corporation 
financing the transfer of goods and services.

TransAlta Corporation    |    2020  Annual Integrated Report

F13

TRANSALTA CORPORATION F13

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

II. Revenue from Other Sources 
Lease Revenue
In certain situations, a long-term electricity or thermal sales contract may contain, or be considered, a lease. Revenues 
associated with non-lease elements are recognized as goods or services revenues as outlined above. Where the terms 
and  conditions  of  the  contract  result  in  the  customer  assuming  the  principal  risks  and  rewards  of  ownership  of  the 
underlying asset, the contractual arrangement is considered a finance lease, which results in the recognition of finance 
lease  income.  Where  the  Corporation  retains  the  principal  risks  and  rewards,  the  contractual  arrangement  is  an 
operating lease. Rental income, including contingent rents where applicable, is recognized over the term of the contract. 

Revenue from Derivatives
Commodity risk management activities involve the use of derivatives such as physical and financial swaps, forward sales 
contracts,  futures  contracts  and  options,  which  are  used  to  earn  revenues  and  to  gain  market  information.  These 
derivatives are accounted for using fair value accounting. The initial recognition and subsequent changes in fair value 
affect reported net earnings in the period the change occurs and are presented on a net basis in revenue. The fair values 
of  instruments  that  remain  open  at  the  end  of  the  reporting  period  represent  unrealized  gains  or  losses  and  are 
presented  on  the  Consolidated  Statements  of  Financial  Position  as  risk  management  assets  or  liabilities.  Some  of  the 
derivatives used by the Corporation in trading activities are not traded on an active exchange or have terms that extend 
beyond  the  time  period  for  which  exchange-based  quotes  are  available.  The  fair  values  of  these  derivatives  are 
determined using internal valuation techniques or models.

The Corporation, its subsidiary companies and  joint  arrangements each determine their  functional  currency based on 
the currency of the primary economic environment in which they operate. The Corporation’s functional currency is the 
B. Foreign Currency Translation
Canadian dollar, while the functional currencies of its subsidiary companies and joint arrangements are the Canadian, 
US  or  Australian  dollar.  Transactions  denominated  in  a  currency  other  than  the  functional  currency  of  an  entity  are 
translated at the exchange rate in effect on the transaction date. The resulting exchange gains and losses are included in 
each entity’s net earnings in the period in which they arise.

The Corporation’s foreign operations are translated to the Corporation’s presentation currency, which is the Canadian 
dollar, for inclusion in the consolidated financial statements. Foreign-denominated monetary and non-monetary assets 
and  liabilities  of  foreign  operations  are  translated  at  exchange  rates  in  effect  at  the  end  of  the  reporting  period,  and 
revenue and expenses are translated at exchange rates in effect on the transaction date. The resulting translation gains 
and  losses  are  included  in  other  comprehensive  income  (loss)  (“OCI”)  with  the  cumulative  gain  or  loss  reported  in 
accumulated other comprehensive income (loss) (“AOCI”). Amounts previously recognized in AOCI are recognized in net 
earnings when there is a reduction in a foreign net investment as a result of a disposal, partial disposal or loss of control.

I. Financial Instruments
C. Financial Instruments and Hedges
Classification and Measurement
IFRS  9  introduced  the  requirement  to  classify  and  measure  financial  assets  based  on  their  contractual  cash  flow 
characteristics and the Corporation’s business model for the financial asset. All financial assets and financial liabilities, 
including  derivatives,  are  recognized  at  fair  value  on  the  Consolidated  Statements  of  Financial  Position  when  the 
Corporation becomes party to the contractual provisions of a financial instrument or non-financial derivative contract. 
Financial assets must be classified and measured at either amortized cost, at fair value through profit or loss (“FVTPL”), 
or at fair value through other comprehensive income (“FVOCI”). 

Financial  assets  with  contractual  cash  flows  arising  on  specified  dates,  consisting  solely  of  principal  and  interest,  and 
that  are  held  within  a  business  model  whose  objective  is  to  collect  the  contractual  cash  flows  are  subsequently 
measured at amortized cost. Financial assets measured at FVOCI are those that have contractual cash flows arising on 
specific dates, consisting solely of principal and interest, and that are held within a business model whose objective is to 
collect the contractual cash flows and to sell the financial asset. All other financial assets are subsequently measured at 
FVTPL.

Financial liabilities are classified as FVTPL when the financial liability is held for trading. All other financial liabilities are 
subsequently measured at amortized cost. 

Funds  received  under  tax  equity  investment  arrangements  are  classified  as  long-term  debt.  These  arrangements  are 
used  in  the  US  where  project  investors  acquire  an  equity  investment  in  the  project  entity  and  in  return  for  their 
investment, are allocated substantially  all  of  the  earnings, cash flows and tax benefits (such as production tax credits, 
investment tax credits, accelerated tax depreciation, as applicable) until they have achieved the agreed upon target rate 
of return. Once achieved, the arrangements flip, with the Corporation then receiving the majority of earnings, cash flows 
and  tax  benefits.  At  that  time,  the  tax  equity  financings  will  be  classified  as  a  non-controlling  interest.  In  applying  the 

F14

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F14

 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

effective interest method to tax equity financings, the Corporation has made an accounting policy choice to recognize 
the impacts of the tax attributes in net interest expense.

The  Corporation  enters  into  a  variety  of  derivative  financial  instruments  to  manage  its  exposure  to  commodity  price 
risk, interest rate risk and foreign currency exchange risk, including fixed price financial swaps, long-term physical power 
sale contracts, foreign exchange forward contracts and designating foreign currency debt as a hedge of net investments 
in foreign operations. 

Derivatives  are  initially  recognized  at  fair  value  at  the  date  the  derivative  contracts  are  entered  into  and  are 
subsequently remeasured to their fair value at the end of each reporting period. The resulting gain or loss is recognized 
in net earnings immediately, unless the derivative is designated and effective as a hedging instrument, in which case the 
timing of the recognition in net earnings is dependent on the nature of the hedging relationship.

Derivatives  embedded  in  non-derivative  host  contracts  that  are  not  financial  assets  within  the  scope  of  IFRS  9  (e.g., 
financial  liabilities)  are  treated  as  separate  derivatives  when  they  meet  the  definition  of  a  derivative,  their  risks  and 
characteristics are not closely related to those of the host contracts and the host contracts are not measured at FVTPL. 
Derivatives embedded in hybrid contracts that contain financial asset hosts within the scope of IFRS 9 are not separated 
and the entire contract is measured at either FVTPL or amortized cost, as appropriate. 

Financial  assets  are  derecognized  when  the  contractual  rights  to  receive  cash  flows  expire.  Financial  liabilities  are 
derecognized when the obligation is discharged, cancelled or expired.

Financial assets are also derecognized when the Corporation has transferred its rights to receive cash flows from the 
asset or has assumed an obligation to pay the received cash flows to a third party under a "pass-through" arrangement 
and either transferred substantially all the risks and rewards of the asset, or transferred control of the asset. TransAlta 
will  continue  to  recognize  the  asset  and  any  associated  liability  if  TransAlta  retains  substantially  all  of  the  risks  and 
rewards of the asset, or retains control of the asset. Continuing involvement that takes the form of a guarantee over the 
transferred  asset  is  measured  at  the  lower  of  the  original  carrying  amount  of  the  asset  and  the  maximum  amount  of 
consideration that TransAlta could be required to repay.

Financial  assets  and  financial  liabilities  are  offset  and  the  net  amount  is  reported  in  the  Consolidated  Statements  of 
Financial  Position  if  there  is  a  currently  enforceable  legal  right  to  offset  the  recognized  amounts  and  there  is  an 
intention to settle on a net basis or to realize the assets and settle the liabilities simultaneously.

Transaction  costs  are  expensed  as  incurred  for  financial  instruments  classified  or  designated  as  FVTPL.  For  other 
financial instruments, such as debt instruments, transaction costs are recognized as part of the carrying amount of the 
financial  instrument.  The  Corporation  uses  the  effective  interest  method  of  amortization  for  any  transaction  costs  or 
fees, premiums or discounts earned or incurred for financial instruments measured at amortized cost.

Impairment of Financial Assets
TransAlta recognizes an allowance for expected credit losses for financial assets measured at amortized cost as well as 
certain  other  instruments.  The  loss  allowance  for  a  financial  asset  is  measured  at  an  amount  equal  to  the  lifetime 
expected  credit  loss  if  its  credit  risk  has  increased  significantly  since  initial  recognition  or  if  the  financial  asset  is  a 
purchased  or  originated  credit-impaired  financial  asset.  If  the  credit  risk  on  a  financial  asset  has  not  increased 
significantly since initial recognition, its loss allowance is measured at an amount equal to the 12-month expected credit 
loss. 

For  trade  receivables,  lease  receivables  and  contract  assets  recognized  under  IFRS  15,  TransAlta  applies  a  simplified 
approach for measuring the loss allowance. Therefore, the Corporation does not track changes in credit risk but instead 
recognizes a loss allowance at an amount equal to the lifetime expected credit losses at each reporting date. 

The  assessment  of  the  expected  credit  loss  is  based  on  historical  data  and  adjusted  by  forward-looking  information. 
Forward-looking information utilized includes third-party default rates over time, dependent on credit ratings. 

II. Hedges
Where  hedge  accounting  can  be  applied  and  the  Corporation  chooses  to  seek  hedge  accounting  treatment,  a  hedge 
relationship  is  designated  as  a  fair  value  hedge,  a  cash  flow  hedge  or  a  hedge  of  foreign  currency  exposures  of  a  net 
investment in a foreign operation. 

A relationship qualifies for hedge accounting if, at inception, it is formally designated and documented as a hedge, and 
the  hedging  instrument  and  the  hedged  item  have  values  that  generally  move  in  opposite  direction  because  of  the 
hedged risk. The documentation includes identification of the hedging instrument and hedged item or transaction, the 
nature of the risk being hedged, the Corporation’s risk management objectives and strategy for undertaking the hedge, 
and how hedge effectiveness will be assessed. The process of hedge accounting includes linking derivatives to specific 
recognized assets and liabilities or to specific firm commitments or highly probable anticipated transactions.

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TRANSALTA CORPORATION F15

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The Corporation formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives used 
are highly effective in offsetting changes in fair values or cash flows of hedged items. If hedge criteria are not met or the 
Corporation does not apply hedge accounting, the derivative is recognized at fair value on the Consolidated Statements 
of Financial Position, with subsequent changes in fair value recorded in net earnings in the period of change.

Fair Value Hedges
In  a  fair  value  hedging  relationship,  the  carrying  amount  of  the  hedged  item  is  adjusted  for  changes  in  fair  value 
attributable  to  the  hedged  risk,  with  the  changes  being  recognized  in  net  earnings.  Changes  in  the  fair  value  of  the 
hedged item, to the extent that the hedging relationship is effective, are offset by changes in the fair value of the hedging 
derivative, which is also recorded in net earnings. 

For fair value hedges relating to items carried at amortized cost, any adjustment to carrying value is amortized through 
profit or loss over the remaining term of the hedge using the effective interest rate ("EIR") method. The EIR amortization 
may begin as soon as an adjustment exists and no later than when the hedged item ceases to be adjusted for changes in 
its fair value attributable to the risk being hedged. 

If the hedged item is derecognized, the unamortized fair value is recognized immediately in profit or loss.

Cash Flow Hedges
In  a  cash  flow  hedging  relationship,  the  effective  portion  of  the  change  in  the  fair  value  of  the  hedging  derivative  is 
recognized in OCI while any ineffective portion is recognized in net earnings. The cash flow hedge reserve is adjusted to 
the lower of the cumulative gain or loss on the hedging instrument and the cumulative change in fair value of the hedged 
item.

If cash flow hedge accounting is discontinued, the amounts previously recognized in AOCI must remain in AOCI if the 
hedged  future  cash  flows  are  still  expected  to  occur.  Otherwise,  the  amount  will  be  immediately  reclassified  to  net 
earnings  as  a  reclassification  adjustment.  After  discontinuation,  once  the  hedged  cash  flow  occurs,  any  amount 
remaining in AOCI must be accounted for depending on the nature of the underlying transaction.

Hedges of Foreign Currency Exposures of a Net Investment in a Foreign Operation
In  hedging  a  foreign  currency  exposure  of  a  net  investment  in  a  foreign  operation,  the  effective  portion  of  foreign 
exchange gains and losses on the hedging instrument is recognized in OCI and the ineffective portion is recognized in 
net earnings. The related fair values are recorded in risk management assets or liabilities, as appropriate. The amounts 
previously recognized in AOCI are recognized in net earnings when there is a reduction in the hedged net investment as 
a result of a disposal, partial disposal or loss of control.

Cash and cash equivalents are comprised of cash and highly liquid investments with original maturities of three months 
or less.
D. Cash and Cash Equivalents

The terms and conditions of certain  contracts  may  require the Corporation or its counterparties to provide collateral 
when the fair value of the obligation pursuant to these contracts is in excess of any credit limits granted. Downgrades in 
E. Collateral Paid and Received
creditworthiness  by  certain  credit  rating  agencies  may  decrease  the  credit  limits  granted  to  the  Corporation  or  its 
counterparties and accordingly increase the amount of collateral that may have to be provided by the Corporation or its 
counterparties.

I. Fuel
The Corporation’s inventory balance is comprised of coal and natural gas used as fuel, which is measured at the lower of 
F. Inventory
weighted average cost and net realizable value.

The cost of internally produced coal inventory is determined using absorption costing, which is defined as the sum of all 
applicable  expenditures  and  charges  directly  incurred  in  bringing  inventory  to  its  existing  condition  and  location. 
Available  coal  inventory  tends  to  increase  during  the  second  and  third  quarters  as  a  result  of  favourable  weather 
conditions and lower electricity production as maintenance is performed. Due to the limited number of processing steps 
incurred in mining coal and preparing it for consumption and its relatively low value on a per-unit basis, management 
does not distinguish between work in process and coal available for consumption. The cost of natural gas and purchased 
coal  inventory  includes  all  applicable  expenditures  and  charges  incurred  in  bringing  the  inventory  to  its  existing 
condition and location.

F16

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TRANSALTA CORPORATION F16

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

II. Energy Marketing
Commodity inventories held in the Energy Marketing segment for trading purposes are measured at fair value less costs 
to sell. Changes in fair value less costs to sell are recognized in net earnings in the period of change.

III. Parts, Materials and Supplies
Parts,  materials  and  supplies  are  recorded  at  the  lower  of  cost,  measured  at  moving  average  costs,  and  net  realizable 
value.

IV. Emission Credits and Allowances
Emission  credits  and  allowances  are  recorded  as  inventory  at  cost.  Those  purchased  for  use  by  the  Corporation  are 
recorded at cost and are carried at the lower of weighted average cost and net realizable value. For emission credits that 
are not ordinarily interchangeable, the Corporation records the credits using the specific identification method. Credits 
granted  to,  or  internally  generated  by,  TransAlta  are  recorded  at  nil.  Emission  liabilities  are  recorded  using  the  best 
estimate  of  the  amount  required  by  the  Corporation  to  settle  its  obligation  in  excess  of  government-established  caps 
and targets. To the extent compliance costs are recoverable under the terms of contracts with third parties, the amounts 
are recognized as revenue in the period of recovery.

Emission credits and allowances that are held for trading and that meet the definition of a derivative are accounted for 
using the fair value method of accounting. Emission credits and allowances that do not satisfy the criteria of a derivative 
are accounted for using the accrual method.

The Corporation’s investment in property, plant and equipment (“PP&E”) is initially measured at the original cost of each 
component at the time of construction, purchase or acquisition. A component is a tangible portion of an asset that can be 
G. Property, Plant and Equipment
separately identified and depreciated over its own expected useful life, and is expected to provide a benefit for a period 
in  excess  of  one  year.  Original  cost  includes  items  such  as  materials,  labour,  borrowing  costs  and  other  directly 
attributable costs, including the initial estimate of the cost of decommissioning and restoration. Costs are recognized as 
PP&E  assets  if  it  is  probable  that  future  economic  benefits  will  be  realized  and  the  cost  of  the  item  can  be  measured 
reliably. The cost of major spare parts is capitalized and classified as PP&E, as these items can only be used in connection 
with an item of PP&E.

Planned  maintenance  is  performed  at  regular  intervals.  Planned  major  maintenance  includes  inspection,  repair  and 
maintenance  of  existing  components,  and  the  replacement  of  existing  components.  Costs  incurred  for  planned  major 
maintenance  activities  are  capitalized  in  the  period  maintenance  activities  occur  and  are  amortized  on  a  straight-line 
basis over the term until the next major maintenance event. Expenditures incurred for the replacement of components 
during major maintenance are capitalized and amortized over the estimated useful life of such components.

The cost of routine repairs and maintenance and the replacement of minor parts is charged to net earnings as incurred. 
Subsequent to initial recognition and measurement at cost, all classes of PP&E continue to be measured using the cost 
model and are reported at cost less accumulated depreciation and impairment losses, if any.

An item of PP&E or a component is derecognized upon disposal or when no future economic benefits are expected from 
its use or disposal. Any gain or loss arising on derecognition is included in net earnings when the asset is derecognized. 

The estimate of the useful life of each component of PP&E is based on current facts and past experience, and takes into 
consideration existing long-term sales agreements and contracts, current and forecasted demand, and the potential for 
technological obsolescence. The useful life is used to estimate the rate at which the component of PP&E is depreciated. 
PP&E  assets  are  subject  to  depreciation  when  the  asset  is  considered  to  be  available  for  use,  which  is  typically  upon 
commencement of commercial operations. Capital spares that are designated as critical for uninterrupted operation in a 
particular facility are depreciated over the life of that facility, even if the item is not in service. Other capital spares begin 
to be depreciated when the item is put into service. Each significant component of an item of PP&E is depreciated to its 
residual  value  over  its  estimated  useful  life,  generally  using  straight-line  or  unit-of-production  methods.  Estimated 
useful lives, residual values and depreciation methods are reviewed annually and are subject to revision based on new or 
additional  information.  The  effect  of  a  change  in  useful  life,  residual  value  or  depreciation  method  is  accounted  for 
prospectively.

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TRANSALTA CORPORATION F17

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Estimated remaining useful lives of the components of depreciable assets, categorized by asset class, are as follows:

Hydro generation

Wind generation

Gas generation

Coal generation

Mining property and equipment

Capital spares and other

1-52 years

1-29 years

1-17 years

1-29 years

1-9 years

2-52 years

TransAlta  capitalizes  borrowing  costs  on  capital  invested  in  projects  under  construction  (see  Note  2(R)).  Upon 
commencement  of  commercial  operations,  capitalized  borrowing  costs,  as  a  portion  of  the  total  cost  of  the  asset,  are 
depreciated over the estimated useful life of the related asset.

Intangible assets acquired in a business combination are recognized separately from goodwill at their fair value at the 
date of acquisition. Intangible assets acquired separately are recognized at cost. Internally generated intangible assets 
H. Intangible Assets
arising from development projects are recognized when certain criteria related to the feasibility of internal use or sale, 
and probable future economic benefits of the intangible asset, are demonstrated.

Intangible assets are initially recognized at cost, which is comprised of all directly attributable costs necessary to create, 
produce and prepare the intangible asset to be capable of operating in the manner intended by management. 

Subsequent to initial recognition, intangible assets continue to be measured using the cost model, and are reported at 
cost  less  accumulated  amortization  and  impairment  losses,  if  any.  Amortization  is  included  in  depreciation  and 
amortization and fuel, carbon compliance and purchased power in the Consolidated Statements of Earnings (Loss).

Amortization commences when the intangible asset is available for use and is computed on a straight-line basis over the 
intangible  asset’s  estimated  useful  life,  except  for  coal  rights,  which  are  amortized  using  a  unit-of-production  basis, 
based on the estimated mine reserves. Estimated useful lives of intangible assets may be determined, for example, with 
reference to the term of the related contract or licence agreement. The estimated useful lives and amortization methods 
are reviewed annually with the effect of any changes being accounted for prospectively.

Intangible assets consist of power sale contracts with fixed prices higher than market prices at the date of acquisition, 
coal  rights,  software  and  intangibles  under  development.  Estimated  remaining  useful  lives  of  intangible  assets  are  as 
follows:

Software

Power sale contracts

2-7 years

1-20 years

At the end of each reporting period, the Corporation assesses whether there is any indication that PP&E and finite life 
intangible assets are impaired.
I. Impairment of Tangible and Intangible Assets Excluding Goodwill

Factors  that  could  indicate  that  an  impairment  exists  include:  significant  underperformance  relative  to  historical  or 
projected operating results; significant changes in the manner in which an asset is used, or in the Corporation’s overall 
business strategy; or significant negative industry or economic trends. In some cases, these events are clear. However, in 
many cases, a clearly identifiable event indicating possible impairment does not occur. Instead, a series of individually 
insignificant  events  occur  over  a  period  of  time  leading  to  an  indication  that  an  asset  may  be  impaired.  This  can  be 
further  complicated  in  situations  where  the  Corporation  is  not  the  operator  of  the  facility.  Events  can  occur  in  these 
situations that may not be known until a date subsequent to their occurrence.

The  Corporation’s  operations,  the  market  and  business  environment  are  routinely  monitored,  and  judgments  and 
assessments  are  made  to  determine  whether  an  event  has  occurred  that  indicates  a  possible  impairment.  If  such  an 
event has occurred, an estimate is made of the recoverable amount of the asset or “CGU” to which the asset belongs. 
Recoverable amount is the higher of an asset’s fair value less costs of disposal and its value in use. Fair value is the price 
that would be received to sell an asset in an orderly transaction between market participants at the measurement date. 
In determining fair value, recent market transactions are taken into account. If no such transactions can be identified, an 
appropriate valuation model such as discounted cash flows is used. Value in use is the present value of the estimated 
future cash flows expected to be derived from the asset from its continued use and ultimate disposal by the Corporation. 
If  the  recoverable  amount  is  less  than  the  carrying  amount  of  the  asset  or  CGU,  an  asset  impairment  charge  is 
recognized in net earnings, and the asset’s carrying amount is reduced to its recoverable amount.

F18

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TRANSALTA CORPORATION F18

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

At  each  reporting  date,  an  assessment  is  made  whether  there  is  any  indication  that  an  impairment  charge  previously 
recognized may no longer exist or may have decreased. If such indication exists, the recoverable amount of the asset or 
CGU  to  which  the  asset  belongs  is  estimated,  and,  if  there  has  been  an  increase  in  the  recoverable  amount,  the 
impairment  charge  previously  recognized  is  reversed.  Where  an  impairment  charge  is  subsequently  reversed,  the 
carrying amount of the asset is increased to the lesser of the revised estimate of its recoverable amount or the carrying 
amount that would have been determined (net of depreciation) had no impairment charge been recognized previously. A 
reversal of an impairment charge is recognized in net earnings. 

Goodwill arising in a business combination is recognized as an asset at the date control is acquired. Goodwill is measured 
as the cost of an acquisition plus the amount of any non-controlling interest in the acquiree (if applicable) less the fair 
J. Goodwill
value of the related identifiable assets acquired and liabilities assumed.

Goodwill is not subject to amortization, but is tested for impairment at least annually, or more frequently, if an analysis 
of  events  and  circumstances  indicates  that  a  possible  impairment  may  exist.  These  events  could  include  a  significant 
change in financial position of the CGUs or groups of CGUs to which the goodwill relates or significant negative industry 
or  economic  trends.  For  impairment  purposes,  goodwill  is  allocated  to  each  of  the  Corporation’s  CGUs  or  groups  of 
CGUs that are expected to benefit from the synergies of the business combination in which the goodwill arose. To test 
for impairment, the recoverable amount of the CGUs or groups of CGUs to which the goodwill relates is compared to its 
carrying amount. If the recoverable amount is less than the carrying amount, an impairment charge is recognized in net 
earnings immediately, by first reducing the carrying amount of the goodwill, and then by reducing the carrying amount 
of the other assets in the unit. An impairment charge recognized for goodwill is not reversed in subsequent periods.

Project  development  costs  include  external,  direct  and  incremental  costs  that  are  necessary  for  completing  an 
acquisition  or  construction  project.  These  costs  are  recognized  as  operating  expenses  until  construction  of  a  plant  or 
K. Project Development Costs
acquisition  of  an  investment  is  likely  to  occur,  there  is  reason  to  believe  that  future  costs  are  recoverable,  and  that 
efforts will result in future value to the Corporation, at which time the costs incurred subsequently are included in PP&E 
or  other  assets.  The  appropriateness  of  capitalization  of  these  costs  is  evaluated  each  reporting  period,  and  amounts 
capitalized for projects no longer probable of occurring are charged to net earnings.

The Corporation uses the liability method of accounting for income taxes. Under the liability method, deferred income 
tax  assets  and  liabilities  are  recognized  on  the  differences  between  the  carrying  amounts  of  assets  and  liabilities  and 
L. Income Taxes
their respective income tax basis (temporary differences). A deferred income tax asset may also be recognized for the 
benefit  expected  from  unused  tax  credits  and  losses  available  for  carryforward,  to  the  extent  that  it  is  probable  that 
future  taxable  earnings  will  be  available  against  which  the  tax  credits  and  losses  can  be  applied.  Deferred  income  tax 
assets and liabilities are measured based on income tax rates and tax laws that are enacted or substantively enacted by 
the end of the reporting period and that are expected to apply in the years in which temporary differences are expected 
to  be  realized  or  settled.  Deferred  income  tax  is  charged  or  credited  to  net  earnings,  except  when  related  to  items 
charged or credited to either OCI or directly to equity. The carrying amount of deferred income tax assets is evaluated 
at  the  end  of  each  reporting  period  and  is  reduced  to  the  extent  that  it  is  no  longer  probable  that  sufficient  taxable 
income will be available to allow all or part of the asset to be realized. Unrecognized deferred tax assets are re-assessed 
at  each  reporting  date  and  are  recognised  to  the  extent  that  it  has  become  probable  that  future  taxable  income  will 
allow the deferred income tax asset to be recovered.

Deferred income tax liabilities are recognized for taxable temporary differences arising on investments in subsidiaries, 
except  where  the  Corporation  is  able  to  control  the  reversal  of  the  temporary  difference  and  it  is  probable  that  the 
temporary difference will not reverse in the foreseeable future. 

The  Corporation  has  defined  benefit  pension  and  other  post-employment  benefit  plans.  The  current  service  cost  of 
providing benefits under the defined benefit plans is determined using the projected unit credit method pro-rated based 
M. Employee Future Benefits
on  service.  The  net  interest  cost  is  determined  by  applying  the  discount  rate  to  the  net  defined  benefit  liability.  The 
discount  rate  used  to  determine  the  present  value  of  the  defined  benefit  obligation,  and  the  net  interest  cost,  is 
determined by reference to market yields at the end of the reporting period on high-quality corporate bonds with terms 
and  currencies  that  match  the  estimated  terms  and  currencies  of  the  benefit  obligations.  Remeasurements,  which 
include actuarial gains and losses and the return on plan assets (excluding net interest), are recognized through OCI in 
the period in which they occur. Actuarial gains and losses arise from experience adjustments and changes in actuarial 
assumptions. Remeasurements are not reclassified to profit or loss, from OCI, in subsequent periods.

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TRANSALTA CORPORATION F19

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Gains  or  losses  arising  from  either  a  curtailment  or  settlement  of  a  defined  benefit  plan  are  recognized  when  the 
curtailment or settlement occurs. When the restructuring of a benefit plan gives rise to a curtailment and a settlement of 
obligations, the curtailment is accounted for prior to the settlement.

In  determining  whether  statutory  minimum  funding  requirements  of  the  Corporation’s  defined  benefit  pension  plans 
give rise to recording an additional liability, letters of credit provided by the Corporation as security are considered to 
alleviate the funding requirements. No additional liability results in these circumstances.

Contributions  payable  under  defined  contribution  pension  plans  are  recognized  as  a  liability  and  an  expense  in  the 
period in which the services are rendered.

Provisions  are  recognized  when  the  Corporation  has  a  present  obligation  (legal  or  constructive)  as  a  result  of  a  past 
event, it is probable that the Corporation will be required to settle the obligation, and a reliable estimate can be made of 
N. Provisions
the  amount  of  the  obligation.  A  legal  obligation  can  arise  through  a  contract,  legislation  or  other  operation  of  law.  A 
constructive  obligation  arises  from  an  entity’s  actions  whereby  through  an  established  pattern  of  past  practice, 
published  policies  or  a  sufficiently  specific  current  statement,  the  entity  has  indicated  it  will  accept  certain 
responsibilities  and  has  thus  created  a  valid  expectation  that  it  will  discharge  those  responsibilities.  The  amount 
recognized as a provision is the best estimate, remeasured at each period-end, of the expenditures required to settle the 
present  obligation,  considering  the  risks  and  uncertainties  associated  with  the  obligation.  Where  expenditures  are 
expected to be incurred in the future, the obligation is measured at its present value using a current market-based, risk-
adjusted interest rate.

The  Corporation  records  a  decommissioning  and  restoration  provision  for  all  generating  facilities  and  mine  sites  for 
which it is legally or constructively required to remove the facilities at the end of their useful lives and restore the plant 
or  mine  sites.  For  some  hydro  facilities,  the  Corporation  is  required  to  remove  the  generating  equipment,  but  is  not 
required  to  remove  the  structures.  Initial  decommissioning  provisions  are  recognized  at  their  present  value  when 
incurred. Each reporting date, the Corporation determines the present value of the provision using the current discount 
rates that reflect the time value of money and associated risks. The Corporation recognizes the initial decommissioning 
and restoration provisions, as well as changes resulting from revisions to cost estimates and period-end revisions to the 
market-based, risk-adjusted discount rate, as a cost of the related PP&E (see Note 2(G)) to the extent the related PP&E 
asset is still in use. Where the related PP&E asset has reached the end of its useful life, changes in the decommissioning 
and restoration provision are recognized in net earnings. The accretion of the net present value discount is charged to 
net  earnings  each  period  and  is  included  in  net  interest  expense.  Where  the  Corporation  expects  to  receive 
reimbursement from a third party for a portion of future decommissioning costs, the reimbursement is recognized as a 
separate  asset  when  it  is  virtually  certain  that  the  reimbursement  will  be  received.  Decommissioning  and  restoration 
obligations for coal mines are incurred over time as new areas are mined, and a portion of the provision is settled over 
time as areas are reclaimed prior to final pit reclamation. Reclamation costs for mining assets are recognized on a unit-
of-production basis.

Changes  in  other  provisions  resulting  from  revisions  to  estimates  of  expenditures  required  to  settle  the  obligation  or 
period-end revisions to the market-based, risk-adjusted discount rate are recognized in net earnings. The accretion of 
the net present value discount is charged to net earnings each period and is included in net interest expense.

The  Corporation  measures  share-based  awards  compensation  expense  at  grant  date  at  fair  value  and  recognizes  the 
expense over the vesting period based on the Corporation’s estimate of the number of units that will eventually vest. 
O. Share-Based Payments
Any award that vests in installments is accounted for as a separate award with its own distinct fair value measurement.

Compensation  expense  associated  with  equity-settled  and  cash-settled  awards  are  recognized  within  equity  and 
liability, respectively. The liability associated with cash-settled awards is remeasured to fair value at each reporting date 
up to, and including, the settlement date, with changes in fair value recognized within compensation expense.

Assets are classified as held for sale if their carrying amount will be recovered primarily through a sale as opposed to 
continued use by the Corporation. Assets classified as held for sale are measured at the lower of their carrying amount 
P. Assets Held for Sale
and fair value less costs of disposal. Any impairment is recognized in net earnings. Depreciation and equity accounting 
ceases when an asset or equity investment, respectively, is classified as held for sale. Assets classified as held for sale are 
reported as current assets in the Consolidated Statements of Financial Position.

F20

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TRANSALTA CORPORATION F20

 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

I. Lease Policy for 2019 and 2020
The Corporation adopted IFRS 16 Leases ("IFRS 16") with an initial adoption date of Jan. 1, 2019. As a result, in 2019, the 
Q. Leases
Corporation changed its accounting policy for leases, which is outlined below. Refer to (II) below for information on the 
prior accounting policy.

Under IFRS 16, a contract contains a lease when the customer obtains the right to control the use of an identified asset 
for a period of time in exchange for consideration.

Lessee
The  Corporation  enters  into  lease  arrangements  with  respect  to  land,  building  and  office  space,  vehicles  and  site 
machinery and equipment. For all contracts that meet the definition of a lease under IFRS 16 in which the Corporation is 
the lessee, and which are not exempt as short-term or low-value leases, the Corporation:

▪
▪

▪

Recognizes right-of-use assets and lease liabilities in the Consolidated Statements of Financial Position;
Recognizes depreciation of the right-of-use assets and interest expense on lease liabilities in the Consolidated 
Statements of Earnings (Loss); and
Recognizes the principal repayments on lease liabilities as financing activities and interest payments on lease 
liabilities as operating activities in the Consolidated Statements of Cash Flows. 

For short-term and low-value leases, the Corporation recognizes the lease payments as operating expenses. 

Variable  lease  payments  that  do  not  depend  on  an  index  or  a  rate  are  not  included  in  the  measurement  of  the  lease 
liability and the right-of-use asset and are recognized as an expense in the period in which the event or condition that 
triggers the payments occurs.

Right-of-use assets are initially measured at an amount equal to the lease liability and adjusted for any payments made 
at  or  before  the  commencement  date,  plus  any  initial  direct  costs  incurred  and  an  estimate  of  costs  to  dismantle  and 
remove the underlying asset, or to restore the underlying asset or the site on which it is located, less any lease incentives 
received.

Lease liabilities are initially measured at the present value of the lease payments that are not paid at commencement 
and discounted using the Corporation's incremental borrowing rate or the rate implicit in the lease. The lease liability is 
remeasured when there is a change in future lease payments arising from a change in an index or rate, or if there is a 
change  in  the  Corporation’s  estimate  or  assessment  of  whether  it  will  exercise  an  extension,  termination  or  purchase 
option. A corresponding adjustment is made to the carrying amount of the right-of-use asset, or is recorded in profit or 
loss if the carrying amount of the right-of-use asset has been reduced to zero.

The lease term includes periods covered by an option to extend if the Corporation is reasonably certain to exercise that 
option  and  periods  covered  by  an  option  to  terminate  if  the  Corporation  is  reasonably  certain  not  to  exercise  that 
option.

Right-of-use assets are depreciated over the shorter period of either the lease term or the useful life of the underlying 
asset.  If  a  lease  transfers  ownership  of  the  underlying  asset  or  the  cost  of  the  right-of-use  asset  reflects  that  the 
Corporation expects to exercise the purchase option, the related right-of-use asset is depreciated over the useful life of 
the underlying asset.

The  Corporation  has  elected  to  apply  the  practical  expedient  that  permits  a  lessee  not  to  separate  non-lease 
components, and instead account for any lease and associated non-lease components as a single arrangement.

Lessor
Power purchase agreements (“PPA”) and other long-term contracts may contain, or may be considered, leases where the 
fulfilment of the arrangement is dependent on the use of a specific asset (e.g., a generating unit) and the arrangement 
conveys to the customer the right to control the use of that asset. 

Where the Corporation determines that the contractual provisions of a contract contain, or are, a lease and result in the 
customer assuming the principal risks and rewards of ownership of the asset, the arrangement is a finance lease. Assets 
subject to finance leases are not reflected as PP&E and the net investment in the lease, represented by the present value 
of the amounts due from the lessee, is recorded in the Consolidated Statements of Financial Position as a financial asset, 
classified as a finance lease receivable. The payments considered to be part of the leasing arrangement are apportioned 
between a reduction in the lease receivable and finance lease income. The finance lease income element of the payments 

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is  recognized  using  a  method  that  results  in  a  constant  rate  of  return  on  the  net  investment  in  each  period  and  is 
reflected in finance lease income on the Consolidated Statements of Earnings (Loss).

Where the Corporation determines that the contractual provisions of a contract contain, or are, a lease and result in the 
Corporation retaining the principal risks and rewards of ownership of the asset, the arrangement is an operating lease. 
For operating leases, the asset is, or continues to be, capitalized as PP&E and depreciated over its useful life.

When the Corporation has subleased all or a portion of an asset it is leasing and for which it remains the primary obligor 
under the lease, it accounts for the head lease and the sublease as two separate contracts. The sublease is classified as a 
finance lease by reference to the right-of-use asset arising from the head lease.

II. Lease Policy Prior to 2019
A lease is an arrangement whereby the lessor conveys to the lessee, in return for a payment or series of payments, the 
right to use an asset for an agreed period of time. 

PPA and other long-term contracts may contain, or may be considered, leases where the fulfilment of the arrangement is 
dependent on the use of a specific asset (e.g., a generating unit) and the arrangement conveys to the customer the right 
to use that asset.

Where the Corporation determines that the contractual provisions of a contract contain, or are, a lease and result in the 
customer assuming the principal risks and rewards of ownership of the asset, the arrangement is a finance lease. Assets 
subject to finance leases are not reflected as PP&E and the net investment in the lease, represented by the present value 
of the amounts due from the lessee, is recorded in the Consolidated Statements of Financial Position as a financial asset, 
classified as a finance lease receivable. The payments considered to be part of the leasing arrangement are apportioned 
between a reduction in the lease receivable and finance lease income. The finance lease income element of the payments 
is  recognized  using  a  method  that  results  in  a  constant  rate  of  return  on  the  net  investment  in  each  period  and  is 
reflected in finance lease income on the Consolidated Statements of Earnings (Loss).

Where the Corporation determines that the contractual provisions of a contract contain, or are, a lease and result in the 
Corporation retaining the principal risks and rewards of ownership of the asset, the arrangement is an operating lease. 
For  operating  leases,  the  asset  is,  or  continues  to  be,  capitalized  as  PP&E  and  depreciated  over  its  useful  life.  Rental 
income, including contingent rent, from operating leases is recognized over the term of the arrangement and is reflected 
in revenue on the Consolidated Statements of Earnings (Loss). Contingent rent may arise when payments due under the 
contract are not fixed in amount but vary based on a future factor such as the amount of use or production.

Leasing or other contractual arrangements that transfer substantially all of the risks and rewards of ownership to the 
Corporation  are  considered  finance  leases.  A  leased  asset  and  lease  obligation  are  recognized  at  the  lower  of  the  fair 
value or the present value of the minimum lease payments. Lease payments are apportioned between interest expense 
and a reduction of the lease liability. Contingent rents are charged as expenses in the periods incurred. The leased asset 
is depreciated over the shorter of the estimated useful life of the asset and the lease term.

The Corporation capitalizes borrowing costs that are directly attributable to, or relate to general borrowings used for, 
the construction of qualifying assets. Qualifying assets are assets that take a substantial period of time to prepare for 
R. Borrowing Costs
their intended use and typically include generating facilities or other assets that are constructed over periods of time 
exceeding 12 months. Borrowing costs are considered to be directly attributable if they could have been avoided if the 
expenditure on the qualifying asset had not been made. Borrowing costs that are capitalized are included in the cost of 
the related PP&E component. Capitalization of borrowing costs ceases when substantially all the activities necessary to 
prepare the asset for its intended use are complete. 

All other borrowing costs are expensed in the period in which they are incurred.

Non-controlling interests arise from business combinations in which the Corporation acquires less than a 100 per cent 
interest.  Non-controlling  interests  are  initially  measured  at  either  fair  value  or  at  the  non-controlling  interest’s 
S. Non-Controlling Interests
proportionate  share  of  the  acquiree’s  identifiable  net  assets.  The  Corporation  determines  on  a  transaction-by-
transaction  basis  which  measurement  method  is  used.  Non-controlling  interests  also  arise  from  other  contractual 
arrangements  between  the  Corporation  and  other  parties,  whereby  the  other  party  has  acquired  an  interest  in  a 
specified asset or operation, and the Corporation retains control.

Subsequent  to  acquisition,  the  carrying  amount  of  non-controlling  interests  is  increased  or  decreased  by  the  non-
controlling  interest’s  share  of  subsequent  changes  in  equity  and  payments  to  the  non-controlling  interest.  Total 
comprehensive income is attributed to the non-controlling interests even if this results in the non-controlling interests 
having a negative balance.

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Notes to Consolidated Financial Statements

A  joint  arrangement  is  a  contractual  arrangement  that  establishes  the  terms  by  which  two  or  more  parties  agree  to 
undertake and jointly control an economic activity. The Corporation's joint arrangements are generally classified as two 
T. Joint Arrangements
types: joint operations and joint ventures.

A  joint  operation  arises  when  the  parties  that  have  joint  control  have  rights  to  the  assets  and  obligations  for  the 
liabilities relating to the arrangement. Generally, each party takes a share of the output from the asset and each bears an 
agreed upon share of the costs incurred in respect of the joint operation. The Corporation reports its interests in joint 
operations  in  its  consolidated  financial  statements  using  the  proportionate  consolidation  method  by  recognizing  its 
share of the assets, liabilities, revenues and expenses in respect of its interest in the joint operation.

In  a  joint  venture,  the  venturers  do  not  have  rights  to  individual  assets  or  obligations  of  the  venture.  Rather,  each 
venturer has rights to the net assets of the arrangement. The Corporation reports its interests in joint ventures using the 
equity  method.  Under  the  equity  method,  the  investment  is  initially  recognized  at  cost  and  the  carrying  amount  is 
increased or decreased to recognize the Corporation’s share of the joint venture’s net earnings or loss after the date of 
acquisition.  The  impact  of  transactions  between  the  Corporation  and  joint  ventures  is  eliminated  based  on  the 
Corporation’s  ownership  interest.  Distributions  received  from  joint  ventures  reduce  the  carrying  amount  of  the 
investment. Any excess of the cost of an acquisition less the fair value of the recognized identifiable assets, liabilities and 
contingent liabilities of an acquired joint venture is recognized as goodwill and is included in the carrying amount of the 
investment and is assessed for impairment as part of the investment.

Investments  in  joint  ventures  are  evaluated  for  impairment  at  each  reporting  date  by  first  assessing  whether  there  is 
objective  evidence  that  the  investment  is  impaired.  If  such  objective  evidence  is  present,  an  impairment  charge  is 
recognized  if  the  investment’s  recoverable  amount  is  less  than  its  carrying  amount.  The  investment’s  recoverable 
amount is determined as the higher of value in use and fair value less costs of disposal. 

Associates  are  entities  over  which  the  Corporation  has  significant  influence.  Significant  influence  is  the  power  to 
participate in financial and operating policy decisions of the entity, but is not control or joint control over the policies. 
U. Investments in Associates
Significant  influence  is  generally  present  when  an  investor  holds  more  than  20  per  cent  of  the  voting  power  of  the 
investee. 

Investments  in  associates  are  accounted  for  using  the  equity  method  of  accounting.  Under  the  equity  method,  the 
investment  is  initially  recognized  at  cost  and  the  carrying  amount  is  increased  or  decreased  to  recognize  the 
Corporation’s share of the associate’s net earnings or loss after the date of acquisition. The Corporation’s share of the 
associate’s  net  earnings  or  loss  is  recognized  in  net  earnings.  Distributions  received  from  the  associate  reduce  the 
carrying amount of the investment

Investments  in  associates  are  evaluated  for  impairment  at  each  reporting  date  by  first  assessing  whether  there  is 
objective  evidence  that  the  investment  is  impaired.  If  such  objective  evidence  is  present,  an  impairment  charge  is 
recognized  if  the  investment’s  recoverable  amount  is  less  than  its  carrying  amount.  The  investment’s  recoverable 
amount is determined as the higher of value in use and fair value less costs of disposal. Any impairment loss is recognized 
within equity income in the statement of earnings.

Government  incentives  are  recognized  when  the  Corporation  has  reasonable  assurance  that  it  will  comply  with  the 
conditions  associated  with  the  incentive  and  that  the  incentive  will  be  received.  When  the  incentive  relates  to  an 
V. Government Incentives
expense  item,  it  is  recognized  in  net  earnings  over  the  same  period  in  which  the  related  costs  or  revenues  are 
recognized. When the incentive relates to an asset, it is recognized as a reduction of the carrying amount of PP&E and 
released to earnings as a reduction in depreciation over the expected useful life of the related asset.

Basic  earnings  per  share  is  calculated  by  dividing  net  earnings  attributable  to  common  shareholders  by  the  weighted 
average number of common shares outstanding in the year.
W. Earnings per Share

Diluted earnings per share is calculated by dividing net earnings attributable to common shareholders, adjusted for the 
after-tax  effects  of  dividends,  interest  or  other  changes  in  net  earnings  that  would  result  from  potential  dilutive 
instruments,  by  the  weighted  average  number  of  common  shares  outstanding  in  the  year,  adjusted  for  additional 
common shares that would have been issued on the conversion of all potential dilutive instruments.

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Notes to Consolidated Financial Statements

Transactions in which the acquisition constitutes a business are accounted for using the acquisition method. Identifiable 
assets acquired and liabilities assumed are measured at their acquisition date fair values. A business consists of inputs 
X. Business Combinations
and processes applied to those inputs that have the ability to contribute to the creation of outputs. Goodwill is measured 
as  the  excess  of  the  fair  value  of  consideration  transferred  less  the  fair  value  of  the  identifiable  assets  acquired  and 
liabilities  assumed.  Acquisition-related  costs  to  effect  the  business  combination,  with  the  exception  of  costs  to  issue 
debt or equity securities, are recognized in net earnings as incurred.

In  2019,  the  Corporation  early-adopted  amendments  to  IFRS  3  Business  Combinations  in  advance  of  the  mandatory 
effective date of Jan. 1, 2020. The amendments, among other things, introduced an optional fair value concentration test 
that can be applied on a transaction-by-transaction basis, to permit a simplified assessment of whether an acquired set 
of  activities  and  assets  are  not  a  business.  Where  substantially  all  of  the  fair  value  of  the  gross  assets  acquired  is 
concentrated in a single identifiable asset or group of similar identifiable assets, the Corporation may elect to treat the 
acquisition as an asset acquisition and not as a business combination. 

A mine stripping activity asset is recognized when all of the following are met: i) it is probable that the future benefit 
associated  with  improved  access  to  the  coal  reserves  associated  with  the  stripping  activity  will  be  realized;  ii)  the 
Y. Stripping Costs
component  of  the  coal  reserve  to  which  access  has  been  improved  can  be  identified;  and  iii)  the  costs  related  to  the 
stripping  activity  associated  with  that  component  can  be  measured  reliably.  Costs  include  those  directly  incurred  to 
perform the stripping activity as well as an allocation of directly attributable overheads. The resulting stripping activity 
asset is amortized on a unit-of-production basis over the expected useful life of the identified component that it relates 
to. The amortization is recognized as a component of the standard cost of coal inventory. 

The  preparation  of  financial  statements  requires  management  to  make  judgments,  estimates  and  assumptions  that 
could  affect  the  reported  amounts  of  assets,  liabilities,  revenues,  expenses  and  disclosures  of  contingent  assets  and 
Z. Significant Accounting Judgments and Key Sources of Estimation Uncertainty
liabilities during the period. These estimates are subject to uncertainty. Actual results could differ from those estimates 
due to factors such as fluctuations in interest rates, foreign exchange rates, inflation and commodity prices, and changes 
in economic conditions, legislation and regulations.

In  the  process  of  applying  the  Corporation’s  accounting  policies,  management  has  to  make  judgments  and  estimates 
about matters that are highly uncertain at the time the estimate is made and that could significantly affect the amounts 
recognized  in  the  consolidated  financial  statements.  Different  estimates  with  respect  to  key  variables  used  in  the 
calculations, or changes to estimates, could potentially have a material impact on the Corporation’s financial position or 
performance. The key judgments and sources of estimation uncertainty are described below:

I. COVID-19
The  outbreak  of  the  novel  strain  of  coronavirus  ("COVID-19")  has  resulted  in  governments  worldwide  enacting 
emergency measures to constrain the spread of the virus. These measures, which include the implementation of travel 
bans,  self-imposed  quarantine  periods,  self-isolation,  physical  and  social  distancing  and  the  closure  of  non-essential 
businesses, have caused significant disruption to businesses globally, which has resulted in an uncertain and challenging 
economic environment. The duration and impact of the COVID-19 pandemic are unknown at this time. Estimates to the 
extent  to  which  the  COVID-19  pandemic  may,  directly  or  indirectly,  impact  the  Corporation's  operations,  financial 
results and conditions in future periods are also subject to significant uncertainty. For a description of additional risks 
identified as a result of the pandemic, refer to Note 16. Actual results could differ from these estimates due to factors 
such as fluctuations in interest rates, foreign exchange rates, inflation and commodity prices, and changes in economic 
conditions, legislation and regulations. 

II. Impairment of PP&E and Goodwill
Impairment exists when the carrying amount of an asset, CGU or group of CGUs to which goodwill relates exceeds its 
recoverable amount, which is the higher of its fair value less costs of disposal and its value in use. An assessment is made 
at each reporting date as to whether there is any indication that an impairment charge may exist or that a previously 
recognized  impairment  charge  may  no  longer  exist  or  may  have  decreased.  In  determining  fair  value  less  costs  of 
disposal,  information  about  third-party  transactions  for  similar  assets  is  used  and  if  none  is  available,  other  valuation 
techniques, such as discounted cash flows, are used. Value in use is computed using the present value of management’s 
best estimates of future cash flows based on the current use and present condition of the asset. 

In estimating either fair value less costs of disposal or value in use using discounted cash flow methods, estimates and 
assumptions must be made about sales prices, cost of sales, production, fuel consumed, capital expenditures, retirement 
costs and other related cash inflows and outflows over the life of the facilities, which can range from 30 to 60 years. In 
developing these assumptions, management uses estimates of contracted and future market prices based on expected 
market  supply  and  demand  in  the  region  in  which  the  plant  operates,  anticipated  production  levels,  planned  and 

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

unplanned  outages,  changes  to  regulations  and  transmission  capacity  or  constraints  for  the  remaining  life  of  the 
facilities. 

Discount  rates  are  determined  by  employing  a  weighted  average  cost  of  capital  methodology  that  is  based  on  capital 
structure, cost of equity and cost of debt assumptions based on comparable companies with similar risk characteristics 
and  market  data  as  the  asset,  CGU  or  group  of  CGUs  subject  to  the  test.  These  estimates  and  assumptions  are 
susceptible to change from period to period and actual results can, and often do, differ from the estimates, and can have 
either a positive or negative impact on the estimate of the impairment charge, and may be material. 

The impairment outcome can also be impacted by the determination of CGUs or groups of CGUs for asset and goodwill 
impairment  testing.  A  CGU  is  the  smallest  identifiable  group  of  assets  that  generates  cash  inflows  that  are  largely 
independent of the cash inflows from other assets or groups of assets, and goodwill is allocated to each CGU or group of 
CGUs that is expected to benefit from the synergies of the acquisition from which the goodwill arose. The allocation of 
goodwill is reassessed upon changes in the composition of segments, CGUs or groups of CGUs. In respect of determining 
CGUs,  significant  judgment  is  required  to  determine  what  constitutes  independent  cash  flows  between  power  plants 
that are connected to the same system. The Corporation evaluates the market design, transmission constraints and the 
contractual  profile  of  each  facility,  as  well  as  the  Corporation’s  own  commodity  price  risk  management  plans  and 
practices, in order to inform this determination. 

With regard to the allocation or reallocation of goodwill, significant judgment is required to evaluate synergies and their 
impacts.  Minimum  thresholds  also  exist  with  respect  to  segmentation  and  internal  monitoring  activities.  The 
Corporation  evaluates  synergies  with  regards  to  opportunities  from  combined  talent  and  technology,  functional 
organization  and  future  growth  potential,  and  considers  its  own  performance  measurement  processes  in  making  this 
determination. Information regarding significant judgments and estimates in respect of impairment during 2018 to 2020 
is found in Notes 7,  18 and 21.

III. Leases
In determining whether the Corporation’s contracts contain, or are, leases, management must use judgment in assessing 
whether the contract provides the customer with the right to substantially all of the economic benefits from the use of 
the asset during the lease term and whether the customer obtains the right to direct the use of the asset during the lease 
term.  For  those  agreements  considered  to  contain,  or  be,  leases,  further  judgment  is  required  to  determine  the  lease 
term  by  assessing  whether  termination  or  extension  options  are  reasonably  certain  to  be  exercised.  Judgment  is  also 
applied  in  identifying  in-substance  fixed  payments  (included)  and  variable  payments  that  are  based  on  usage  or 
performance factors (excluded) and in identifying lease and non-lease components (services that the supplier performs) 
of contracts and in allocating contract payments to lease and non-lease components.

For leases where the Corporation is a lessor, judgment is required to determine if substantially all of the significant risks 
and rewards of ownership are transferred to the customer or remain with the Corporation, to appropriately account for 
the  agreement  as  either  a  finance  or  operating  lease.  These  judgments  can  be  significant  and  impact  how  the 
Corporation  classifies  amounts  related  to  the  arrangement  as  either  PP&E  or  as  a  finance  lease  receivable  on  the 
Consolidated  Statements  of  Financial  Position,  and  therefore  the  amount  of  certain  items  of  revenue  and  expense  is 
dependent upon such classifications.

IV. Income Taxes
Preparation of the consolidated financial statements involves determining an estimate of, or provision for, income taxes 
in each of the jurisdictions in which the Corporation operates. The process also involves making an estimate of income 
taxes  currently  payable  and  income  taxes  expected  to  be  payable  or  recoverable  in  future  periods,  referred  to  as 
deferred  income  taxes.  Deferred  income  taxes  result  from  the  effects  of  temporary  differences  due  to  items  that  are 
treated  differently  for  tax  and  accounting  purposes.  The  tax  effects  of  these  differences  are  reflected  in  the 
Consolidated Statements of Financial Position as deferred income tax assets and liabilities. An assessment must also be 
made to determine the likelihood that the Corporation’s future taxable income will be sufficient to permit the recovery 
of  deferred  income  tax  assets.  To  the  extent  that  such  recovery  is  not  probable,  deferred  income  tax  assets  must  be 
reduced.  Management  uses  the  Corporation’s  long-range  forecasts  as  a  basis  for  evaluation  of  recovery  of  deferred 
income tax assets. Management must exercise judgment in its assessment of continually changing tax interpretations, 
regulations  and  legislation  to  ensure  deferred  income  tax  assets  and  liabilities  are  complete  and  fairly  presented. 
Differing  assessments  and  applications  than  the  Corporation’s  estimates  could  materially  impact  the  amounts 
recognized  for  deferred  income  tax  assets  and  liabilities.  See  Note  12  for  further  details  on  the  impacts  of  the 
Corporation’s tax policies.

V. Financial Instruments and Derivatives
The Corporation’s financial instruments and derivatives are accounted for at fair value, with the initial and subsequent 
changes  in  fair  value  affecting  earnings  in  the  period  the  change  occurs.  The  fair  values  of  financial  instruments  and 
derivatives are classified within three levels, with Level III fair values determined using inputs for the asset or liability 
that are not readily observable. These fair value levels are outlined and discussed in more detail in Note 15. Some of the 
Corporation’s fair values are included in Level III because they are not traded on an active exchange or have terms that 

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Notes to Consolidated Financial Statements

extend beyond the time period for which exchange-based quotes are available and require the use of internal valuation 
techniques or models to determine fair value.

The  determination  of  the  fair  value  of  these  contracts  and  derivative  instruments  can  be  complex  and  relies  on 
judgments  and  estimates  concerning  future  prices,  volatility  and  liquidity,  among  other  factors.  These  fair  value 
estimates  may  not  necessarily  be  indicative  of  the  amounts  that  could  be  realized  or  settled,  and  changes  in  these 
assumptions could affect the reported fair value of financial instruments. Fair values can fluctuate significantly and can 
be favourable or unfavourable depending on current market conditions. Judgment is also used in determining whether a 
highly probable forecasted transaction designated in a cash flow hedge is expected to occur based on the Corporation’s 
estimates of pricing and production to allow the future transaction to be fulfiled.

When  the  Corporation  enters  into  contracts  to  buy  or  sell  non-financial  items,  such  as  certain  commodities,  and  the 
contracts  can  be  settled  net  in  cash,  the  Corporation  must  use  judgment  to  evaluate  whether  such  contracts  were 
entered into and continue to be held for the purposes of the receipt or delivery of the commodity in accordance with the 
Corporation's expected purchase, sale or usage requirements (i.e., normal purchase and sale). If this assertion cannot be 
supported, initially at contract inception and on an ongoing basis, the contracts must be accounted for as derivatives and 
measured at fair value, with changes in fair value recognized in net earnings. In supporting the normal purchase and sale 
assertion,  the  Corporation  considers  the  nature  of  the  contracts,  the  forecasted  demand  and  supply  requirements  to 
which  the  contracts  relate,  and  its  past  practice  of  net  settling  other  similar  contracts,  which  may  taint  the  normal 
purchase and sale assertion. 

VI. Project Development Costs
Project  development  costs  are  capitalized  in  accordance  with  the  accounting  policy  in  Note  2(K).  Management  is 
required to use judgment to determine if there is reason to believe that future costs are recoverable, and that efforts will 
result in future value to the Corporation, in determining the amount to be capitalized. Information on the write-off of 
project development costs is disclosed in Note 7.

VII. Provisions for Decommissioning and Restoration Activities
TransAlta recognizes provisions for decommissioning and restoration obligations as outlined in Note 2(N) and Note 23. 
Initial  decommissioning  provisions,  and  subsequent  changes  thereto,  are  determined  using  the  Corporation’s  best 
estimate  of  the  required  cash  expenditures,  adjusted  to  reflect  the  risks  and  uncertainties  inherent  in  the  timing  and 
amount of settlement. The estimated cash expenditures are present valued using a current, risk-adjusted, market-based, 
pre-tax discount rate. A change in estimated cash flows, market interest rates or timing could have a material impact on 
the carrying amount of the provision. Information regarding significant judgments and estimates made during 2020 in 
respect of decommissioning and restoration provisions can be found in Note 3(A)(III) and Notes 7 and 23.

VIII. Useful Life of PP&E
Each significant component of an item of PP&E is depreciated over its estimated useful life. Estimated useful lives are 
determined based on current facts and past experience, and take into consideration the anticipated physical life of the 
asset,  existing  long-term  sales  agreements  and  contracts,  current  and  forecasted  demand,  the  potential  for 
technological  obsolescence  and  regulations.  The  useful  lives  of  PP&E  are  reviewed  at  least  annually  to  ensure  they 
continue to be appropriate. Information on changes in useful lives of facilities is disclosed in Note 3(A)(III).

IX. Employee Future Benefits
The  Corporation  provides  pension  and  other  post-employment  benefits,  such  as  health  and  dental  benefits,  to 
employees. The cost of providing these benefits is dependent upon many factors, including actual plan experience and 
estimates and assumptions about future experience.

The liability for pension and post-employment benefits and associated costs included in annual compensation expenses 
are impacted by estimates related to: 

▪

▪
▪

Employee  demographics,  including  age,  compensation  levels,  employment  periods,  the  level  of  contributions 
made to the plans and earnings on plan assets;;
The effects of changes to the provisions of the plans; and
Changes  in  key  actuarial  assumptions,  including  rates  of  compensation  and  health-care  cost  increases  and 
discount rates.

Due to the complexity of the valuation of pension and post-employment benefits, a change in the estimate of any one of 
these factors could have a material effect on the carrying amount of the liability for pension and other post-employment 
benefits or the related expense. These assumptions are reviewed annually to ensure they continue to be appropriate. 
See Note 31 for disclosures on employee future benefits.

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

X. Other Provisions
Where necessary, the Corporation recognizes provisions arising from ongoing business activities, such as interpretation 
and  application  of  contract  terms,  ongoing  litigation  and  force  majeure  claims.  These  provisions,  and  subsequent 
changes thereto, are determined using the Corporation’s best estimate of the outcome of the underlying event and can 
also  be  impacted  by  determinations  made  by  third  parties,  in  compliance  with  contractual  requirements.  The  actual 
amount of the provisions that may be required could differ materially from the amount recognized. More information is 
disclosed in Notes 4, 9 and 23 with respect to other provisions.

XI. Revenue from Contracts with Customers
Where  contracts  contain  multiple  promises  for  goods  or  services,  management  exercises  judgment  in  determining 
whether goods or services constitute distinct goods or services or a series of distinct goods that are substantially the 
same and that have the same pattern of transfer to the customer. The determination of a performance obligation affects 
whether the transaction price is recognized at a point in time or over time. Management considers both the mechanics 
of  the  contract  and  the  economic  and  operating  environment  of  the  contract  in  determining  whether  the  goods  or 
services in a contract are distinct.

In determining the transaction price and estimates of variable consideration, management considers the past history of 
customer usage in estimating the goods and services to be provided to the customer. The Corporation also considers the 
historical  production  levels  and  operating  conditions  for  its  variable  generating  assets.  The  Corporation’s  contracts 
generally  outline  a  specific  amount  to  be  invoiced  to  a  customer  associated  with  each  performance  obligation  in  the 
contract.  Where  contracts  do  not  specify  amounts  for  individual  performance  obligations,  the  Corporation  estimates 
the amount of the transaction price to allocate to individual performance obligations based on their stand-alone selling 
price,  which  is  primarily  estimated  based  on  the  amounts  that  would  be  charged  to  customers  under  similar  market 
conditions. 

The  satisfaction  of  performance  obligations  requires  management  to  make  judgments  as  to  when  control  of  the 
underlying good or service transfers to the customer. Determining when a performance obligation is satisfied affects the 
timing of revenue recognition. Management considers both customer acceptance of the good or service, and the impact 
of laws and regulations such as certification requirements, in determining when this transfer occurs. 

Management  also  applies  judgment  in  determining  whether  the  invoice  practical  expedient  permits  recognition  of 
revenue at the invoiced amount, if that invoiced amount corresponds directly with the entity's performance to date.

XII. Classification of Joint Arrangements
Upon  entering  into  a  joint  arrangement,  the  Corporation  must  classify  it  as  either  a  joint  operation  or  joint  venture, 
which  classification  affects  the  accounting  for  the  joint  arrangement.  In  making  this  classification,  the  Corporation 
exercises judgment in evaluating the terms and conditions of the arrangement to determine whether the parties have 
rights  to  the  assets  and  obligations  or  rights  to  the  net  assets.  Factors  such  as  the  legal  structure,  contractual 
arrangements  and  other  facts  and  circumstances,  such  as  where  the  purpose  of  the  arrangement  is  primarily  for  the 
provision  of  the  output  to  the  parties  and  when  the  parties  are  substantially  the  only  source  of  cash  flows  for  the 
arrangement, must be evaluated to understand the rights of the parties to the arrangement.

XIII. Significant Influence
Upon  entering  into  an  investment,  the  Corporation  must  classify  it  as  either  an  investment  as  an  associate  or  an 
investment  under  IFRS  9.  In  making  this  classification,  the  Corporation  exercises  judgment  in  evaluating  whether  the 
Corporation has significant influence over the investee. Significant influence is the power to participate in the financial 
and operating policy decisions of the investee, but is not control or joint control over those policies. If the Corporation 
holds  20  per  cent  or  more  of  the  voting  rights  in  the  investee,  it  is  presumed  that  the  entity  has  significant  influence, 
unless  it  can  be  clearly  demonstrated  that  this  is  not  the  case.  Other  factors  such  as  representation  on  the  board  of 
directors,  participation  in  policy-making  processes,  material  transactions  between  the  Corporation  and  investee, 
interchange of managerial personnel or providing essential technical information are considered when assessing if the 
Corporation has significant influence over an investee. 

I. Amendments to IAS 1 and IAS 8 Definition of Material
3. Accounting Changes
A. Current Accounting Changes
The  Corporation  adopted  the  amendments  to  IAS  1  and  IAS  8  as  of  Jan.  1,  2020.  The  amendments  provide  a  new 
definition  of  material  that  states  “information  is  material  if  omitting,  misstating  or  obscuring  it  could  reasonably  be 
expected  to  influence  decisions  that  the  primary  users  of  general  purpose  financial  statements  make  on  the  basis  of 
those financial statements, which provide financial information about a specific reporting entity.”

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The amendments clarify that materiality will depend on the nature or magnitude of information, either individually or in 
combination  with  other  information,  in  the  context  of  the  financial  statements.  A  misstatement  of  information  is 
material if it could reasonably be expected to influence decisions made by the primary users. These amendments had no 
impact on the consolidated financial statements of, nor is there expected to be any future impact to, the Corporation.

II. Amendments to IFRS 7 and 9 Interest Rate Benchmark Reform
In September 2019, the IASB issued amendments to the IFRS relating to Interest Rate Benchmark Reform - amending IFRS 
9,  IAS  39  and  IFRS  7.  These  amendments  provide  temporary  relief  during  the  period  of  uncertainty  from  applying 
specific  hedge  accounting  requirements  to  hedging  relationships  directly  affected  by  the  ongoing  interest  rate 
benchmark  reforms.  These  amendments  are  mandatory  for  annual  periods  beginning  on  or  after  Jan.  1,  2020.  The 
Corporation  adopted  these  amendments  as  of  Jan.  1,  2020.    There  were  no  hedging  relationships  that  were  directly 
affected on Jan. 1, 2020.  

During the first quarter of 2020, the Corporation entered into cash flow hedges of interest rate risk associated with a 
future  forecasted  debt  issuance  using  London  Interbank  Offered  Rate  ("LIBOR")  based  derivative  instruments.  As  a 
temporary  relief,  provided  by  the  IFRS  9  amendments,  the  Corporation  has  assumed  that  the  LIBOR  interest  rate  on 
which the cash flows of the interest rate swaps are based is not altered by interbank offered rates ("IBOR") reform when 
assessing if the hedge is highly effective. 

III. Change in Estimates
Useful Life of PP&E at Alberta Thermal
During  the  third  quarter  of  2020,  the  Board  approved  the  accelerated  shutdown  of  the  Highvale  mine  by  the  end  of 
2021 and accordingly the useful life of the related assets was adjusted to align with the Corporation's conversion to gas 
plans.  This  resulted  in  an  increase  of  $15  million  in  depreciation  expense  that  was  recognized  in  the  Consolidated 
Statements of Earnings (Loss) during the second half of 2020. As at Dec. 31, 2020, the carrying value of the Highvale 
mine, including PP&E,  right-of-use assets and intangible assets, was $373 million, 

During the third quarter of 2019, the Corporation adjusted the useful lives of certain coal assets, effective Sept. 1, 2019, 
to reflect the changes announced related to the Clean Energy Investment Plan (see Note 4(A) for further details). As a 
result, assets used only for coal-burning operations were adjusted to shorten their useful lives whereas other asset lives 
were extended as they were identified as  being  used after the coal-to-gas or combined-cycle conversions. Due to the 
impact  of  shortening  the  lives  of  the  coal  assets,  overall  depreciation  expense  for  the  year  ended  Dec.  31,  2019 
increased by approximately $16 million.

In  2018,  as  a  result  of  the  Off-Coal  Agreement  (“OCA”)  with  the  Government  of  Alberta  described  in  Note  9(B),  the 
Corporation adjusted the useful lives of some of its mine assets to align with the Corporation's coal-to-gas conversion 
plans.    As  a  result,  depreciation  expense  and  intangibles  amortization  for  the  year  ended  Dec.31,  2018,  increased  by 
$38 million.

In the third quarter of 2018, the Corporation retired Sundance Unit 2 and recorded an impairment charge of $38 million 
for the remaining net book value of the asset.  In the third quarter of 2020, the Corporation recognized an impairment 
on Sundance Unit 3 in the amount of $70 million, due to the Corporation's decision to retire the unit. The retirement 
decision for Sundance Unit 3 was largely driven by an assessment of future market conditions, the age and condition of 
the unit, and our ability to supply energy and capacity from our generation portfolio in Alberta.

Useful Life of PP&E at Wind and Solar
During the third quarter of 2019, the allocation of the costs recognized for the components of the Wind and Solar PP&E 
and  the  useful  lives  for  these  identified  components  were  reviewed.  As  a  result  of  the  review,  additional  components 
were identified for parts where the useful lives are shorter than the original estimate.  The useful life of each of these 
components was reduced from 30 years to either 15 years or 10 years. Accordingly, depreciation expense for the year 
ended Dec. 31, 2019, increased by approximately $11 million.

Sheerness
During the second quarter of 2019, the Corporation adjusted the useful life of its Sheerness coal-fired facility assets to 
align  with  the  dual-fuel  conversion  plans.  As  a  result,  the  assets  used  for  coal-burning  operations  as  well  as  the  other 
asset  lives  were  extended  and  depreciation  expense  for  the  year  ended  Dec.  31,  2019,  decreased  by  approximately 
$8 million. 

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The useful lives may be revised or extended in compliance with the Corporation's accounting policies, dependent upon 
future operating decisions and events.

Decommissioning and other provisions
In the fourth quarter of 2020, the Corporation adjusted the Sarnia decommissioning and restoration provision to reflect  
an  updated  engineering  study.  The  Corporation's  current  best  estimate  of  the  decommissioning  and  restoration 
provision decreased by $15 million. This resulted in a decrease in the related assets in PP&E.

In the third quarter of 2020, the Corporation adjusted the Highvale mine decommissioning and restoration provision to 
reflect the mine closure advancement, an updated mine plan and current mining activity including increased volume of 
material  movement.  The  Corporation's  current  best  estimate  of  the  decommissioning  and  restoration  provision 
increased by $75 million. This resulted in an increase in the related assets in PP&E.

During  the  third  quarter  of  2019,  the  Corporation  adjusted  the  Centralia  mine  decommissioning  and  restoration 
provision as management no longer believed that the fine coal recovery and reclamation work would be completed as 
originally  proposed.  At  the  end  of  2019,  the  Corporation's  best  estimate  of  the  decommissioning  and  restoration 
provision increased by $141 million. Since the Centralia mine is no longer operating and reached the end of its useful life 
in 2006, this adjustment resulted in the immediate recognition of the full $141 million, through asset impairment in net 
earnings. 

Amendments to IAS 16 Property, Plant and Equipment: Proceeds before Intended Use
The Corporation plans to early adopt the amendments to IAS 16 Property, Plant and Equipment: Proceeds before Intended 
B. Future Accounting Changes
Use on Jan. 1, 2021. The amendment has a mandatory effective date of Jan. 1, 2022. The amendments prohibit deducting 
from the cost of an item of property, plant and equipment any proceeds from selling items produced while bringing the 
asset to the location and condition necessary for it to be capable of operating. No adjustments are expected from early 
adopting the amendments.

IFRS 7 Financial Instruments, Disclosures - Interest Rate Benchmark Reform
The IASB issued Interest Rate Benchmark Reform — Phase 2 in August 2020, which amends IFRS 9 Financial Instruments, 
IAS 39 Financial Instruments: Recognition  and  Measurement, IFRS 7 Financial Instruments: Disclosures and IFRS 16 Leases. 
The  amendments  are  effective  Jan.  1,  2021,  and  will  be  adopted  by  the  Corporation  in  2021,  no  financial  impact  is 
expected upon adoption.

Certain  comparative  figures  have  been  reclassified  to  conform  to  the  current  period’s  presentation.  These 
C. Comparative Figures
reclassifications did not impact previously reported net earnings.

TransAlta's  Clean  Energy  Investment  Plan  announced  in  2019  includes  converting  our  existing  Alberta  coal  assets  to 
4. Significant and Subsequent Events
natural  gas  and  advancing  our  leadership  position  in  on-site  generation  and  renewable  energy.  The  Clean  Energy 
A. Clean Energy Investment Plan
Investment  Plan  provided  further  details  of  previously  highlighted  initiatives  that  TransAlta  has  been  continuing  to 
progress since early 2017. 

TransAlta’s Clean Energy Investment Plan includes converting three of our existing Alberta thermal units to gas during 
2021  by  replacing  existing  coal  burners  with  natural  gas  burners.  The  cost  to  convert  each  unit  is  expected  to  be 
approximately $35 million. On Feb. 1, 2021, we announced the completion of the conversion to gas of Sundance Unit 6. 
The Corporation continues to advance the conversion of its Keephills Unit 2 and Keephills Unit 3 for completion later in 
2021  and  has  issued  Full  Notice  to  Proceed  for  both  units.  In  addition,  on  April  4,  2020,  the  dual-fuel  conversion  of 
Sheerness Unit 2 was completed. The Sheerness facility will receive it's last coal shipment in the first quarter of 2021, 
with coal stock being actively depleted until the end of 2021. The elimination of coal as a fuel source will reduce future 
fuel costs and greenhouse gas ("GHG") costs at Sheerness.

The highlights of these gas conversion investments include:

▪
▪
▪
▪

Positioning TransAlta’s fleet as a low-cost generator in the Alberta energy-only market;
Generating attractive returns by leveraging the Corporation’s existing infrastructure;
Significantly extending the life and cash flows of our Alberta thermal assets; and
Significantly reducing air emissions and costs.

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The  Clean  Energy  Investment  Plan  also  includes  repowering  the  steam  turbines  at  Sundance  Unit  5  and,  potentially,  
Keephills Unit 1 by installing one or more combustion turbines and heat recovery steam generators, thereby creating 
highly efficient combined-cycle units. The repowered units are expected to be a 35 per cent to 45 per cent lower capital 
investment when compared to a new combined-cycle facility, while achieving a similar heat rate. During the first quarter 
of 2020, we received regulatory approval from the Alberta Utilities Commission ("AUC") and Alberta Environment and 
Parks for the repowering of Sundance Unit 5 and Keephills Unit 1 into combined-cycle units. During the fourth quarter 
of 2020, an equipment supply agreement was executed as part of the strategy to repower Sundance Unit 5 into a highly 
efficient combined cycle unit. The commercial operation date is anticipated in the fourth quarter of 2023. The Sundance 
Unit  5  repowered  combined-cycle  unit  will  have  a  capacity  of  approximately  730  MW  and  is  expected  to  cost 
approximately $800 million to $825 million, well below a greenfield combined-cycle project. As part of this transaction, 
we also acquired a long-term PPA for capacity plus energy, including the passthrough of GHG costs, starting in late 2023 
with Shell Energy North America (Canada). The Corporation will continue to evaluate the prospect for the repowering of 
Keephills Unit 1 in 2021 and 2022, as a supply addition to the Alberta market in the 2026 to 2030 time frame. 

TransAlta has determined to cease coal-fired operations in Canada by Jan 1, 2022. During the third quarter of 2020, the 
Board approved the accelerated shutdown of the Highvale mine by the end of 2021, and the useful life of the related 
assets was adjusted to align with the Corporation's conversion to gas plans. As a result, the Corporation announced that 
Keephills Unit 1 and Sundance Unit 4 will discontinue firing with coal and will only operate on gas effective Jan. 1, 2022. 
The maximum capability of these units will be reduced to 70 MW and 113 MW, respectively.  

As at Dec. 31, 2020, the carrying value of the Highvale mine, including PP&E right-of-use assets and intangible assets, 
was $373 million. As a result, our cost per tonne of coal will increase as the fixed coal costs will be spread over lower 
volumes. During the second half of 2020, the increased depreciation expense and our cost per tonne of coal exceeded 
the net realizable value of the coal inventory and a writedown of $37 million was recognized in fuel, carbon compliance 
and  purchased  power.  As  the  Highvale  mine  moves  into  the  reclamation  phase,  our  anticipated  coal  consumption  is 
expected  to  continue  to  decline,  further  increasing  the  cost  of  coal,  and  future  expected  writedowns  in  fuel  costs.    In 
2020,  we  started  the  year  with  2.1  million  tonnes  of  coal  inventory,  during  which  we  mined  an  additional  2.3  million 
tonnes and consumed 3.5 million tonnes.  We ended the year with approximately 1 million tonnes of coal inventory and 
we will continue to actively deplete our coal stock as we wind down our mining activity by the end of 2021. 

The  Corporation’s  Clean  Energy  Investment  Plan  also  consists  of  three  wind  projects  in  the  United  States,  one  wind 
project  in  Alberta  and  a  cogeneration  facility  that  is  discussed  in  more  detail  later  in  this  section.  The  Big  Level  wind 
project ("Big Level") and Antrim wind project ("Antrim") began commercial operations on Dec. 19, 2019, and Dec, 24, 
2019, respectively. The Skookumchuck wind project began commercial operation on Nov. 7, 2020, and was acquired by 
the  Corporation  on  Nov.  25.  2020.  The  Windrise  wind  project  ("Windrise")  is  currently  under  construction.  These 
projects are underpinned by long-term PPAs with highly creditworthy counterparties. In addition, TransAlta has entered 
into agreements to develop, construct and operate a 40 MW cogeneration facility at the Kaybob South No. 3 sour gas 
processing  plant  ("K3").  Please  see  Note  4(J)  for  additional  details  on  the  current  status  of  the  Kaybob  cogeneration 
project. 

On  Dec.  17,  2018,  the  Corporation  exercised  its  option  to  acquire 50  per  cent  ownership  in  the  Pioneer  gas  pipeline 
("Pioneer Pipeline") for $83 million. Tidewater Midstream & Infrastructure Ltd.'s (“TMI”) and TransAlta each own a 50 
B. Pioneer Pipeline
per cent interest in the Pioneer Pipeline, which is backstopped by a 15-year take-or-pay agreement from TransAlta at 
market rate tolls. During the fourth quarter of 2019, TransAlta recognized a right-of-use asset and lease liability for the 
portion of the Pioneer Pipeline that is not directly owned.

During  2019,  the  Pioneer  Pipeline  transported  its  first  gas  four  months  ahead  of  schedule  to  TransAlta's  generating 
units at Sundance and Keephills. The Pioneer Pipeline initially had approximately 50 MMcf/day of natural gas flowing 
during  the  start-up  phase  where  initial  flows  fluctuated  depending  on  market  conditions.  Firm  throughput  of 
approximately 130 MMcf/day of natural gas began flowing through the Pioneer Pipeline on Nov. 1, 2019.  

The Pioneer Pipeline is held in a separate entity that is a joint operation with TMI.  The Corporation reports its interests 
in joint operations in its consolidated financial statements using the proportionate consolidation method by recognizing 
its share of the assets, liabilities, revenues and expenses in respect of its interest in the joint operation within the Alberta 
Thermal segment. The Pioneer Pipeline is classified as a joint operation, due to the fact that TransAlta is currently the 
only customer and both parties are providing the only cash flows to fund the operations.  

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

On Oct. 1, 2020, TransAlta announced that it had entered into a definitive Purchase and Sale Agreement providing for 
the sale of its 50 per cent interest in the Pioneer Pipeline to ATCO Gas and Pipelines Ltd. (“ATCO”) (the "Transaction"). 
The  purchase  price  of  $255  million  represents  both  TransAlta's  and  TMI's  interests.  This  agreement  replaces  the 
previous Purchase and Sale agreement to sell the Pioneer Pipeline to NOVA Gas Transmission Ltd. (“NGTL”) from the 
second quarter of 2020. ATCO acquired the right to purchase the Pioneer Pipeline through an option agreement with 
NGTL.  Following  closing  of  the  Transaction,  the  Pioneer  Pipeline  will  be  integrated  into  NGTL's  and  ATCO's  Alberta 
integrated  natural  gas  transmission  systems  to  provide  reliable  natural  gas  supply  to  TransAlta's  Sundance  and 
Keephills power generating stations. At Dec. 31, 2020, our interest in the Pioneer Pipeline is included in assets held for 
sale in the Consolidated Statements of Financial Position. 

In addition, TransAlta has entered into incremental long-term firm natural gas delivery transportation agreements with 
NGTL for 351 TJ per day, bringing the total long-term firm natural gas transportation contracts up to 400 TJ per day by 
2023. TransAlta’s current commitments, including the 139 TJ per day supply arrangement with TMI, will remain in place 
until the closing of the Transaction. The Transaction is subject to customary regulatory approvals and is anticipated to 
close during the second quarter of 2021.

On April 12, 2019, TransAlta signed an agreement with Southern Power Company, a subsidiary of Southern Company, 
to  have  the  option  to  purchase  a  49  per  cent  interest  in  SP  Skookumchuck  Investments,  LLC  ("Skookumchuck")  with 
C. Skookumchuck Wind Project
Southern Power upon the facility's commercial operation date. Skookumchuck is a 136.8 MW wind project located in 
Lewis  and  Thurston  counties  near  Centralia  in  Washington  state  consisting  of  38  Vestas  V136  wind  turbines.  The 
project began commercial operation on Nov. 7, 2020.

On  Nov.  25,  2020,  TransAlta  completed  the  acquisition  of  Skookumchuck.  TransAlta's  total  capital  investment  was 
$163 million, with TransAlta paying cash of $86 million (US$66 million) with the remaining $77 million (US$59 million) 
being funded with tax equity financing. The investment has been classified as a joint venture, as the investment is held in 
a  separate  entity  and  the  Corporation  has  rights  to  the  net  assets  of  Skookumchuck.  The  Corporation  reports  its 
interests in joint arrangements in its consolidated financial statements using the equity method recognizing its share of 
income (loss) in the Consolidated Statements of Earnings (Loss).

The  project  has  a  20-year  PPA  with  Puget  Sound  Energy.  TransAlta  has  entered  into  an  definitive  agreement  with 
TransAlta Renewables to sell the Corporation's interest in Skookumchuck, which is expected to close in April 2021, as 
further described below in this section. 

On Aug. 1, 2020, the WindCharger battery storage project ("WindCharger") was sold to TransAlta Renewables.  Wind-
Charger has been operational since Oct. 15, 2020 and is the first utility-scale battery energy storage project in Alberta. 
D. WindCharger
The WindCharger project has a nameplate capacity of 10 MW with a total storage capacity of 20 MWh. WindCharger is 
located  in  southern  Alberta  in  the  Municipal  District  of  Pincher  Creek  next  to  TransAlta’s  existing  Summerview  wind 
facility  substation.  WindCharger  stores  energy  produced  by  the  nearby  Summerview  II  wind  facility  and  discharges  it 
into the Alberta electricity grid at times of peak demand. TransAlta is expected to receive co-funding of almost 50 per 
cent of the $14 million construction  cost from  Emissions Reduction  Alberta. WindCharger is participating in both the 
wholesale energy and ancillary services market of the Alberta Electric System Operator ("AESO").   

On Dec. 17, 2018, TransAlta's 207 MW Windrise wind project was identified by the AESO as one of the three selected 
projects  in  the  third  round  of  the  Renewable  Electricity  Program.  TransAlta  and  the  AESO  subsequently  executed  a 
E. Windrise
Renewable Electricity Support Agreement with a 20-year term.  Windrise is situated on 11,000 acres of land located in 
the county of Willow Creek, Alberta, and is expected to cost approximately $270 million to $285 million. Windrise has 
secured approval for the wind facility and transmission line required to connect the facility to the Alberta grid from the 
AUC. Construction activities on Windrise continue to advance with all appropriate procedures in place to protect the 
construction  team  during  the  COVID-19  pandemic.  However  as  a  result  of  COVID-19  and  related  delays  in 
construction, the commercial operation date is expected to occur during the second half of 2021. As of Dec. 31, 2020, 
Windrise was 78 per cent complete.  On Feb. 26, 2021, TransAlta Renewables acquired Windrise from the Corporation 
as described further below. 

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

In  2019,  TransAlta  acquired  a  portfolio  of  wind  development  projects  in  the  US.  If  the  Corporation  decides  to  move 
forward  with  any  of  these  projects,  additional  consideration  may  be  payable  on  a  project-by-project  basis  only  in  the 
F. Acquisition of Wind Development Projects
event a project achieves commercial operations prior to Dec. 31, 2025.  

On Nov. 30, 2020, TransAlta acquired a 30 per cent equity interest in EMG to diversify our sustainability offerings to 
customers while directly supporting our clean energy transition and sustainability goals. Included in the purchase price 
G. EMG International Acquisition
of US$12 million is an estimated component contingent on EMG realizing certain earnings metrics in 2020 and 2021, 
following  the  acquisition.  The  final  contingent  amount  will  be  calculated  based  on  actual  earnings  metrics  achieved. 
EMG is an established company with over 25 years of experience in process wastewater treatment and specializes in the 
design  and  construction  of  high-rate  anaerobic  digester  systems.  EMG’s  wastewater  treatment  process  converts 
organic waste into a valuable source of renewable energy. Their technology produces a biogas stream that can be used 
as fuel to generate electricity, displacing energy consumed from higher emitting resources. The investment provides a 
unique opportunity for TransAlta to leverage its vast expertise in on-site generation to support further advancements 
by EMG in the waste-to-energy space. This investment will advance the Corporation's presence in the US sustainability 
and on-site generation markets. The investment has been classified as an Investment in associate, as the Corporation 
owns  30  per  cent  of  the  entity  and  has  representation  on  the  management  committee.  The  Corporation  reports  its 
investment in associates in its consolidated financial statements using the equity method recognizing its share of income 
(loss) in the Consolidated Statement of Earnings (Loss). 

On  Dec.  23,  2020,  the  Corporation  announced  that  it  had  entered  into  definitive  agreements  for  the  acquisition  by 
TransAlta Renewables of its 100 per cent  direct interest in the 207 MW Windrise wind project located in the Municipal 
H. TransAlta Renewables Acquisitions 
District of Willow Creek, Alberta; a 49 per cent economic interest in the 137 MW Skookumchuck wind facility located 
across  Thurston  and  Lewis  counties  in  Washington  State;  and  a  100  per  cent  economic  interest  in  the  29  MW  Ada 
cogeneration  facility  located  in  Ada,  Michigan.  TransAlta  Renewables'  acquisition  of  the  Windrise  closed  on  Feb.  26, 
2021, and the acquisition of the economic interests in the Ada cogeneration facility and the Skookumchuck wind facility 
are expected to close in April 2021. The total acquisition value for the portfolio of assets is expected to be $439 million, 
which  includes  the  remaining  construction  costs  for  the  Windrise  wind  project.  TransAlta  Renewables  will  fund  the 
acquisition and remaining construction costs with the proceeds from the TEC Hedland financing. Please refer to Note 
4(L) for further details. 

On  Oct.  22,  2020,  Southern  Cross  Energy  ("SCE"),  a  subsidiary  of  the  Corporation,  replaced  and  extended  its  current 
PPA  with  BHP  Billiton  Nickel  West  Pty  Ltd.  ("BHP").  SCE  is  composed  of  four  generation  facilities  with  a  combined 
I. BHP Nickel West Contract Extension
capacity of 245 MW in the Goldfields region of Western Australia. 

The new agreement was effective Dec. 1, 2020, and replaces the previous contract that was scheduled to expire Dec. 31, 
2023.  The  amendment  to  the  PPA  extends  the  term  to  Dec.  31,  2038,  and  provides  SCE  with  the  exclusive  right  to 
supply  thermal  and  electrical  energy  from  the  Southern  Cross  Facilities  for  BHP's  mining  operations  located  in  the 
Goldfields region of Western Australia. The extension will provide SCE a return on new capital investments, which will 
be  required  to  support  BHP's  future  power  requirements  and  recently  announced  emission  reduction  targets.  The 
amendments  within  the  PPA  also  provide  BHP  participation  rights  in  integrating  renewable  electricity  generation, 
including solar and wind, with energy storage technologies, subject to the satisfaction of certain conditions. Evaluation 
of renewable energy supply and carbon emissions reduction initiatives under the extended PPA with SCE are underway, 
including a 18.5MW solar photovoltaic facility supported by a battery energy storage system and a waste heat steam 
turbine system.

For  accounting  purposes,  the  original  agreement  was  accounted  for  as  an  operating  lease.  Under  the  new  PPA,  the 
agreement  is  now  accounted  for  as  a  finance  lease.    As  a  result,  we  derecognized  net  assets  of  $77  million,  which 
includes  balances  for  PP&E,  intangible  assets,  deferred  credits  and  prepaid  expenses.  In  addition,  we  recognized  a 
finance lease receivable of $89 million and a gain on asset disposition of $12 million. Subsequent to the transaction, the 
Corporation incurred additional major maintenance costs in relation to these assets which was recorded as a reduction 
to the gain on asset disposition.

On Oct. 1, 2019, TransAlta and Energy Transfer Canada ("ET Canada" formerly known as SemCAMS Midstream ULC) 
entered  into  definitive  agreements  to  develop,  construct  and  operate  a  40  MW  cogeneration  facility  at  the  Kaybob 
J. Agreement to Construct and Own a Cogeneration Plant in Alberta

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

South No. 3 sour gas processing plant. The facility was expected to receive its final regulatory approvals in the second 
half of the year and begin construction in December 2020.  On Sept. 25, 2020, the AUC released a decision in which it 
approved  the  construction  and  operation  of  the  facility,  but  denied  the  application  for  the  Industrial  System 
Designation.  We are in ongoing commercial and technical discussions with ET Canada relative to the project at K3, or 
potentially developing a new project at another site owned and/or operated by ET Canada.

On  May  19,  2020,  the  Corporation  closed  the  previously  announced  acquisition  of  a  contracted  natural-gas-fired 
cogeneration  facility  from  two  private  companies  for  a  purchase  price  of  US$27  million.  The  Ada  facility  is  a  29  MW 
K. Acquisition of a Contracted Cogeneration Asset in Michigan
cogeneration facility ("Ada") in Michigan that is contracted under a PPA and a steam sale agreement for approximately 
six years with Consumers Energy and Amway. 

The fair values of the identifiable assets and liabilities of the acquired entity in the business combination as at the date of 
acquisition were:

As at May 19, 2020

Assets

Net working capital

Property, plant and equipment
Intangible assets(1)
Risk management liabilities (current and long-term)

Decommissioning provisions

Total identifiable net assets at fair value

Cash consideration

Working capital consideration
Total purchase consideration transferred

(1) This relates to the power sales contract acquired and will be amortized over six years.

Fair value recognized 
on acquisition

6 

1 

37 

(5) 

(1) 
38 

32 

6 

38 

On  Oct.  22,  2020,  TEC  Hedland  Pty  Ltd.  ("TEC"),  a  subsidiary  of  the  Corporation,  closed  an  AU$800  million  senior 
secured note offering ("Offering"), by way of a private placement, which is secured by, among other things, a first ranking 
L. TEC Hedland Pty Ltd. Secures AU$800 Million Financing  
charge over all assets of TEC. The Offering bears interest at 4.07 per cent per annum, payable quarterly and maturing on 
June 30, 2042, with principal payments starting on Mar. 31, 2022. The Offering has a rating of BBB by Kroll Bond Rating 
Agency. 

TransAlta  Renewables  has  received  $480  million  (AU$515  million)  of  the  proceeds  from  the  Offering  through  the 
redemption  of  certain  intercompany  structures.  An  additional  AU$200  million  has  been  loaned  to  TransAlta 
Renewables by TransAlta Energy (Australia) Pty Ltd. ("TEA"), which is a subsidiary of TransAlta. The loan bears interest 
at 4.32 per cent and will be repaid by Oct. 23, 2022 or on demand. The remaining proceeds from the Offering were set 
aside for required reserves and transaction costs.

TransAlta Renewables used a portion of the proceeds from the redemption and the intercompany loan to repay existing 
indebtedness on its credit facility and to acquire the  asset and economic interests noted above. 

On  March  22,  2019,  the  Corporation  entered  into  an  agreement  (the  "Investment  Agreement")  whereby  Brookfield 
Renewable  Partners  or  its  affiliates  (collectively  “Brookfield”)  agreed  to  invest  $750  million  (the  "Investment")  in  the 
M. Strategic Investment by Brookfield
Corporation  through  the  purchase  of  exchangeable  securities.    The  securities  are  exchangeable  by  Brookfield  into  an 
equity ownership interest in TransAlta’s Alberta Hydro Assets in the future at a value based on a multiple of the Alberta 
Hydro Assets’ future adjusted earnings before interest, taxes, depreciation and amortization ("EBITDA"). 

On  May  1,  2019,  Brookfield  invested  the  initial  tranche  of  $350  million  in  exchange  for  seven  per  cent  unsecured 
subordinated debentures due May 1, 2039.   On Oct. 30, 2020, Brookfield invested the second tranche of $400 million in 
consideration  for  redeemable,  retractable  first  preferred  shares.  The  proceeds  from  the  first  tranche  were  used  to 
accelerate our conversion to gas program. The Corporation intends to use the proceeds from the second tranche of the 

TransAlta Corporation    |    2020  Annual Integrated Report

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Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

financing  to  advance  the  Corporation’s  conversion  to  gas  program,  to  fund  other  growth  initiatives  and  for  general 
corporate purposes. 

Upon entering into the Investment Agreement and as required under the terms of the agreement, the Corporation paid 
Brookfield a $7.5 million structuring fee. A commitment fee of $15 million was also paid upon completion of the initial 
funding.  These  transaction  costs,  representing  three  per  cent  of  the  total  investment  of  $750  million,  have  been 
recognized as part of the carrying value of the unsecured subordinated debentures. See Note 25 for further details.

In accordance with the terms of the Investment Agreement, TransAlta has formed a Hydro Assets Operating Committee 
consisting of two representatives from Brookfield and two representatives from TransAlta to collaborate in connection 
with the operation and maximization of the value of the Alberta Hydro Assets. In connection with this, the Corporation 
has  committed  to  pay  Brookfield  an  annual  fee  of  $1.5  million  for  six  years  beginning  May  1,  2019  (the  "Brookfield 
Hydro  Fee"),  which  is  recognized  in  the  operations,  maintenance  and  administration  expense  on  the  Consolidated 
Statements of Earnings (Loss).

TransAlta has indicated that it intends to return up to $250 million of capital to shareholders through share repurchases 
within three years of receiving the first tranche of the Investment. As of Dec. 31, 2020, 15,068,900 common shares have 
been repurchased and $129 million under the normal course issuer bid normal course issuer bid("NCIB") program. 

Under  the  terms  of  the  Investment  Agreement,  Brookfield  committed  to  purchase  TransAlta  common  shares  on  the 
open market to increase its share ownership in TransAlta to not less than nine per cent by May 1, 2021. As of Jan. 8, 
2021,  Brookfield,  through  its  affiliates,  held,  owned  or  had  control  over  an  aggregate  of 33,845,685  common  shares, 
representing  approximately  12.4  per  cent  of  the  issued  and  outstanding  common  shares,  calculated  on  an  undiluted 
basis. In connection with the Investment, Brookfield is entitled to nominate two directors for election to the Board.

On April 23, 2019, the Mangrove Partners Master Fund Ltd. ("Mangrove") commenced an action in the Ontario Superior 
Court of Justice alleging, among other things, oppression by the Corporation and its directors and seeking to set aside 
the Brookfield Investment Agreement. TransAlta believes the claim is wholly lacking in merit and is taking all steps to 
defend  against  the  allegations.  This  matter  was  adjourned  due  to  the  COVID-19  pandemic  and  is  now  scheduled  to 
proceed to trial for three weeks starting April 19, 2021. Refer to Note 36 for further details.

The Corporation owns a two-unit 1,340 MW thermal coal-fired facility in Centralia, Washington in relation to which we 
have  entered  into  a  number  of  multiple  year  medium-  and  short-term  energy  sales  agreements.  In  2011,  Washington 
N. Centralia  Unit 1 Retirement
State passed the TransAlta Energy Transition Bill (chapter 180, Laws of 2011) (the "Bill'') allowing the Centralia thermal 
facility to comply with the State's GHG emissions performance standards by ceasing coal generation in one of its two 
boilers  by  the  end  of  2020  and  the  other  by  the  end  of  2025.  The  Bill  removed  restrictions  that  had  previously  been 
imposed  on  the  facility  limiting  the  duration  of  new  contracts  from  the  facility  and  limiting  the  technology  that  the 
facility would be required to implement for nitrogen oxide controls.  Centralia Unit 1 was retired from service effective 
Dec. 31, 2020.

On  March  8,  2019,  the  Corporation  announced  that  the  AESO  granted  an  extension  to  the  mothballing  of  Sundance 
Units 3 and 5, which are to remain mothballed until Nov. 1, 2021, extended from April 1, 2020. On July 22, 2020, the 
O. Mothballing of Sundance Units and Sundance Unit 3 Retirement
Corporation  announced  that  it  gave  notice  to  the  AESO  to  retire  Sundance  Unit  3  effective  July  31,  2020.  The 
retirement decision was largely driven by TransAlta’s assessment of future market conditions, the age and condition of 
the unit and our ability to supply energy and capacity from our generation portfolio in Alberta. This decision advances 
our  transition  to  100  per  cent  clean  electricity  by  2025.  The  Corporation  recognized  an  impairment  charge  of 
approximately $70 million ($52 million after-tax) during the third quarter 2020.

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TRANSALTA CORPORATION F34

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The World Health Organization declared a Public Health Emergency of International Concern relating to COVID-19 on 
Jan. 30, 2020, which they subsequently declared, on March 11, 2020, as a global pandemic. The outbreak of COVID-19 
P. COVID-19
has  resulted  in  governments  worldwide  enacting  emergency  measures  to  constrain  the  spread  of  the  virus.  These 
measures, which include the implementation of travel bans, self-imposed quarantine periods, self-isolation, physical and 
social  distancing  and  the  closure  of  non-essential  business,  have  caused  significant  disruption  to  businesses  globally, 
which has resulted in an uncertain and challenging economic environment.

The Corporation continued to operate under its business continuity plan, which focused on ensuring that: (i) employees 
who could work remotely did so; and (ii) employees who operate and maintain our facilities, and who were not able to 
work remotely, were able to work safely and in a manner that ensured they remained healthy. During the second and 
third quarters of 2020, the Corporation successfully brought employees who were working remotely back to the office 
without compromising health and safety standards. In November 2020, as a result of rising COVID-19 case counts in the 
Province of Alberta and in light of office attendance restrictions eventually imposed by the Government of Alberta,  staff 
at  TransAlta's  head  office  returned  to  remote  work  protocols.  All  of  TransAlta's  offices  and  sites  follow  strict  health 
screening  and  social  distancing  protocols  with  personal  protective  equipment  readily  available  and  in  use.  Further, 
TransAlta  maintains  travel  bans  aligned  to  local  jurisdictional  guidance,  enhanced  cleaning  procedures,  revised  work 
schedules,  contingent  work  teams  and  the  reorganization  of  processes  and  procedures  to  limit  contact  with  other 
employees and contractors on-site.

While  our  financial  results  have  been  impacted  by  price  and  demand  as  a  result  of  COVID-19,  all  of  our  facilities 
continue to remain fully operational and capable of meeting our customers' needs. The Corporation continues to work 
and  serve  all  of  our  customers  and  counterparties  under  the  terms  of  their  contracts.  We  have  not  experienced 
interruptions to service requirements. Electricity and steam supply continue to remain a critical service requirement to 
all of our customers and have been deemed an essential service in our jurisdictions.

During the second quarter of 2020, the Government of Canada passed the Canada Emergency Wage Subsidy as part of 
its COVID-19 Economic Response Plan. The program's intent is to support employment by providing expense relief to 
companies  that  experienced  revenue  declines  in  2020.  In  January  2021,  TransAlta  applied  for  support  under  this 
program  and  expects  to  receive  $8  million  (pre-tax)  for  application  periods  in  2020.  This  represents  a  portion  of  the 
funding  that  the  Corporation  is  eligible  for  and  will  be  used  in  supporting  a  strategy  to  add  incremental  employment 
within the Corporation. 

2020
On May 26, 2020, the Corporation announced that the Toronto Stock Exchange ("TSX") accepted the notice filed by the 
Q. Normal Course Issuer Bid
Corporation  to  implement  an  NCIB  for  a  portion  of  its  common  shares.  Pursuant  to  the  NCIB,  the  Corporation  may 
repurchase up to a maximum of 14,000,000 common Shares, representing approximately 7.02 per cent of its public float 
of common shares as at May 25, 2020. Purchases under the NCIB may be made through open market transactions on 
the  TSX  and  any  alternative  Canadian  trading  platforms  on  which  the  common  shares  are  traded,  based  on  the 
prevailing market price. Any common shares purchased under the NCIB will be cancelled.

The  period  during  which  the  Corporation  is  authorized  to  make  purchases  under  the  NCIB  commenced  on  May  29, 
2020, and ends on May 28, 2021, or such earlier date on which the maximum number of common shares are purchased 
under the NCIB or the NCIB is terminated at the Corporation’s election.  

Under TSX rules, not more than 228,157 common shares (being 25 per cent of the average daily trading volume on the 
TSX  of  912,630  common  shares  for  the  six  months  ended  April  30,  2020)  can  be  purchased  on  the  TSX  on  any  single 
trading day under the NCIB, with the exception that one block purchase in excess of the daily maximum is permitted per 
calendar week.

During the year ended Dec. 31, 2020, under the current and previous NCIB, the Corporation purchased and cancelled a 
total of 7,352,600 common shares at an average price of $8.33 per common share, for a total cost of $61 million. See 
Note 27 for further details. 

TransAlta Corporation    |    2020  Annual Integrated Report

F35

TRANSALTA CORPORATION F35

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

2019
On May 27, 2019, the Corporation announced that the TSX accepted the notice filed by the Corporation to implement a 
NCIB for a portion of its common shares. Pursuant to such NCIB, the Corporation was permitted to repurchase up to a  
maximum of 14,000,000 common shares, representing approximately 4.92 per cent of issued and outstanding common 
shares as at May 27, 2019. 

During the year ended Dec. 31, 2019, the Corporation purchased and cancelled a total of 7,716,300 common shares at 
an average price of $8.80 per common share, for a total cost of $68 million. See Note 27 for further details. 

2018
On March 9, 2018, the Corporation announced that the TSX accepted the notice filed by the Corporation to implement 
an NCIB for a portion of its common shares. Pursuant to such NCIB, the Corporation was permitted to repurchase up to 
a  maximum  of  14,000,000  common  shares,  representing  approximately  4.86  per  cent  of  issued  and  outstanding 
common shares as at March 2, 2018. 

During the year ended Dec. 31, 2018, the Corporation purchased and cancelled a total of 3,264,500 common shares at 
an average price of $7.02 per common share, for a total cost of $23 million. 

On  Oct.  1,  2019,  the  Corporation  closed  a  transaction  with  Capital  Power  Corporation  ("Capital  Power")  to  swap 
TransAlta's 50 per cent ownership interest in the 466 MW Genesee 3 facility for Capital Power's 50 per cent ownership 
R. TransAlta and Capital Power Swap Non-Operating Interests in Keephills 3 and Genesee 3
interest in the 463 MW Keephills 3 facility. As a result, TransAlta now owns 100 per cent of the Keephills 3 facility and 
Capital Power owns 100 per cent of the Genesee 3 facility. 

The  transaction  price  for  each  non-operating  interest  largely  offset  each  other,  resulting  in  a  net  payment  of 
approximately $10 million from Capital Power to TransAlta. Final working capital true-ups and settlements occurred in 
November 2019, with a net working capital difference of less than $1 million paid by TransAlta to Capital Power. 

In 2019, the Corporation early-adopted 2020 amendments to IFRS 3 Business Combinations, which introduce an optional 
fair  value  concentration  test.  The  Corporation  elected  to  apply  the  optional  fair  value  concentration  test  to  its 
acquisition of the non-operating interest in Keephills 3, through which it was determined that greater than 90 per cent 
of the fair value was concentrated in the PP&E acquired. As a result, the acquisition was determined to not be a business 
and IFRS 3 requirements were not applied and the existing carrying amount of the owned 50 per cent of Keephills 3 was 
not required to be assessed at fair value. Consequently, the acquisition has been accounted for as an asset acquisition, 
with the following carrying amounts assigned based on relative fair values:

Working capital

Property, plant and equipment

Other assets

Other liabilities

Decommissioning and other provisions

Total acquisition cost

11 

308 

3 

(2) 

(19) 

301 

The sale of Genesee 3 resulted in a gain of $77 million, which was recognized in gains on sale of assets and other on the 
statement of earnings during the fourth quarter of 2019. 

On  the  closing  of  the  transaction,  all  of  the  Keephills  3  and  Genesee  3  project  agreements  with  Capital  Power  were 
terminated,  including  the  agreement  governing  the  supply  of  coal  from  TransAlta’s  Highvale  mine  to  the  Keephills  3 
facility.  The  Highvale  mine  accounted  for  the  revenues  generated  under  this  agreement  pursuant  to  IFRS  15 Revenue 
from Contracts with Customers, which resulted in the recognition of a contract liability representing the mine’s unsatisfied 
performance  obligations  for  which  consideration  was  received  in  advance.  On  Oct.  1,  2019,  upon  termination  of  this 
agreement,  the  Highvale  mine  had  no  future  performance  obligations  and  accordingly,  the  balance  of  the  contract 
liability of $88 million was recognized in earnings in the fourth quarter of 2019. 

F36

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TRANSALTA CORPORATION F36

 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

On Sept. 18, 2017, the Corporation received formal notice from the Balancing Pool for the termination of the Sundance 
B and C PPAs effective March 31, 2018. This announcement was expected and the Corporation took steps to re-take 
S. Termination of the Alberta Sundance Power Purchase Arrangement
dispatch control for the units effective March 31, 2018.  

Pursuant  to  a  written  agreement,  the  Balancing  Pool  paid  the  Corporation  approximately $157  million  on  March  29, 
2018.  The  Corporation  disputed  the  termination  payment  received.  The  Balancing  Pool  excluded  certain  mining  and 
corporate assets that should have been included in the net book value calculation, which the Corporation pursued from 
the Balancing Pool through an arbitration initiated under the PPAs. On Aug. 26, 2019, the Corporation announced it was 
successful in the arbitration and received the full amount it was seeking to recover of $56 million, plus GST and interest. 

On  Feb.  20,  2018,  TransAlta  Renewables  announced  it  entered  into  an  arrangement  to  acquire  interests  in  two 
construction-ready  wind  projects  in  the  Northeastern  United  States  (collectively,  the  "US  Wind  Projects").  Big  Level 
T. US Wind Projects
consists  of  a  90  MW  wind  project  located  in  Pennsylvania  that  has  a  15-year  PPA  with  Microsoft  Corporation,  and 
Antrim consists of a 29 MW wind project located in New Hampshire with two 20-year PPAs with Partners Healthcare 
and New Hampshire Electric Co-op. The Counterparties in the PPAs all have a  Standard & Poor's credit ratings of A+ or 
better. 

A subsidiary of TransAlta acquired Big Level on March 1, 2018, and Antrim on March 28, 2019.

On  April  20,  2018,  TransAlta  Renewables  completed  the  acquisition  of  an  economic  interest  in  Big  Level  from  a 
subsidiary of TransAlta Power Ltd. (“TA Power”). Pursuant to the arrangement, a TransAlta subsidiary owns Big Level 
directly and TA Power issued to TransAlta Renewables tracking preferred shares that pay quarterly dividends based on 
the  pre-tax  net  earnings  of  Big  Level.  The  tracking  preferred  shares  have  preference  over  the  common  shares  of  TA 
Power held by TransAlta, in respect of dividends and the distribution of assets in the event of the liquidation, dissolution 
or winding-up of TA Power.

On  March  28,  2019,  the  closing  conditions  related  to  the  acquisition  of  Antrim  were  finalized  and  the  TransAlta 
subsidiary  acquired  the  development  project  for  total  cash  consideration  of  $24  million  and  the  settlement  of  the 
balance of the outstanding loan receivable of $41 million. As a result, the Corporation recognized $50 million for assets 
under construction in PP&E and $15 million in intangibles. The TransAlta subsidiary also paid the final holdback for the 
Big Level development project of $7 million (US$5 million) on the closing of Antrim.

During  2019,  TransAlta  Renewables  funded  the  acquisition  of  Antrim  and  the  construction  costs  of  the  US  Wind 
Projects  by  subscribing  for  $142  million  (US$105  million)  of  interest-bearing  promissory  notes  and  $78  million 
(US$59 million) of tracking preferred shares.

During  2020,  TransAlta  Renewables  subscribed  for  additional  tracking  preferred  shares  in  Big  Level  and  Antrim  for 
$72  million  (US$52  million).  In  addition  TransAlta  Renewables  repaid  a  portion  of  the  total  outstanding  promissory 
notes to the Corporation related to the Big Level and Antrim wind projects in the amount of $92 million (US$72 million). 

Big Level and Antrim each began commercial operations in December 2019. In conjunction with reaching commercial 
operation,  tax  equity  proceeds  were  raised  to  partially  fund  the  US  Wind  Projects  in  the  amount  of  approximately 
US$85 million for Big Level and approximately US$41 million for Antrim. The tax equity financing is classified as long-
term debt on the Consolidated Statements of Financial Position.  

From  the  tax  equity  proceeds,  a  subsidiary  of  TransAlta  repaid  $98  million  (US$72  million)  of  the  interest-bearing 
promissory  notes  from  TransAlta  Renewables.  The  remaining  amount  of  the  tax  equity  proceeds  is  held  as  reserves 
within  the  project  entity  and  will  be  released  upon  certain  conditions  being  met.  Once  these  conditions  are  met,  the 
reserves  will  be  released  and  the  subsidiary  of  TransAlta  will  repay  the  remaining  outstanding  interest-bearing 
promissory notes from TransAlta Renewables.  

On Oct. 19, 2018, TransAlta Renewables announced that the Kent Hills 3 expansion was fully operational, bringing total 
generating capacity of the Kent Hills wind facility to 167 MW.
U. Kent Hills 3 Wind Project

TransAlta Corporation    |    2020  Annual Integrated Report

F37

TRANSALTA CORPORATION F37

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

On May 31, 2018, TransAlta Renewables acquired from a subsidiary of the Corporation an economic interest in the 50 
MW  Lakeswind  wind  facility  in  Minnesota  and  21  MWs  of  solar  projects  located  in  Massachusetts  ("Mass  Solar") 
V. TransAlta Renewables Acquires Three Renewable Assets from the Corporation
through  the  subscription  of  tracking  preferred  shares  of  a  subsidiary  of  the  Corporation.  In  addition,  TransAlta 
Renewables acquired from a subsidiary of the Corporation ownership of the 20 MW Kent Breeze wind facility located in 
Ontario. The total purchase price for the three assets was approximately $166 million, including the assumption of $62 
million of tax equity obligations and project debt, for net cash consideration of $104 million.  The Corporation continues 
to operate these assets on behalf of TransAlta Renewables.

The acquisition of Kent Breeze was accounted for by TransAlta Renewables as a business combination under common 
control,  requiring  the  application  of  the  pooling  of  interests  method  of  accounting,  whereby  the  assets  and  liabilities 
acquired were recognized at the book values previously recognized by TransAlta at May 31, 2018, and not at their fair 
values. As a result, the Corporation recognized a transfer of equity from the non-controlling interests in the amount of 
$1 million in 2018. 

On June 28, 2018, TransAlta Renewables subscribed for an additional $33 million (US$25 million) of tracking preferred 
shares of a subsidiary of the Corporation related to Mass Solar to fund the repayment of Mass Solar's project debt. 

In connection with these acquisitions, the Corporation recorded a $12 million impairment charge, of which $11 million 
was recorded against PP&E and $1 million against intangibles. See Note 7 for further details.

On  June  22,  2018,  TransAlta  Renewables  closed  a  bought  deal  offering  of  11,860,000  common  shares  through  a 
syndicate  of  underwriters  (the  "Share  Offering").  The  common  shares  were  issued  at  a  price  of  $12.65  per  common 
W. TransAlta Renewables Closes $150- Million Share Offering of Common Shares
share for gross proceeds of approximately $150 million ($144 million of net proceeds).

The net proceeds of the Share Offering were used to partially repay drawn amounts under TransAlta Renewables' credit 
facility, which was drawn in order to fund recent acquisitions. The additional liquidity under the credit facility was used 
for general corporate purposes, including ongoing construction costs associated with the US Wind Projects, described in 
4(J) above.

The Corporation did not purchase any additional common shares under the Share Offering and, following the closing, 
owned  161  million  common  shares,  representing  approximately  61  per  cent  of  the  outstanding  common  shares  of 
TransAlta Renewables. See Note 13 for further details of TransAlta's ownership of TransAlta Renewables. 

On July 20, 2018, the Corporation monetized the payments under OCA with the Government of Alberta by closing a 
$345  million  bond  offering  through  its  indirect  wholly  owned  subsidiary,  TransAlta  OCP  LP  ("TransAlta  OCP").  The 
X. $345 Million Financing Related to the Off-Coal Agreement
offering  was  a  private  placement  that  was  secured  by,  among  other  things,  a  first  ranking  charge  over  the  OCA 
payments  payable  by  the  Government  of  Alberta.  The  amortizing  bonds  bear  interest  at  a  rate  of 4.509  per  cent  per 
annum,  payable  semi-annually  and  maturing  on  Aug.  5,  2030.  The  bonds  have  a  rating  of  BBB,  with  a  stable  trend,  by 
DBRS.  Under  the  terms  of  the  OCA,  the  Corporation  receives  annual  cash  payments  on  or  before  July  31  of 
approximately  $40  million  (approximately  $37  million,  net  to  the  Corporation),  commencing  Jan.  1,  2017,  and 
terminating at the end of 2030. 

The net proceeds were used to partially repay the 6.40 per cent debentures, as described in Note 24.

F38

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F38

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The  majority  of  the  Corporation's  revenues  are  derived  from  the  sale  of  physical  power,  capacity  and  environmental 
5. Revenue
attributes, leasing of power facilities, and from asset optimization activities, which the Corporation disaggregates into 
A. Disaggregation of Revenue
the following groups for the purpose of determining how economic factors affect the recognition of revenue.

Australian
Gas

Alberta 

Thermal(2) Centralia(2)

Energy
Marketing

Corporate 
and Other

Total

Year ended Dec. 31, 2020

Hydro

Revenues from contracts with
   customers
Revenue from leases(3)

Revenue from derivatives and
   other trading activities

Government incentives
Revenue from other(4)

  141 

— 

— 

1 

10 

Wind
and
Solar

North 
American
Gas(1)

261 

— 

(2)   

4 

66 

196 

8 

4 

— 

9 

90 

60 

— 

— 

8 

Total revenue

  152 

329 

217 

158 

Revenues from contracts with customers

Timing of revenue recognition

   At a point in time

   Over time

— 

  141 

25 

236 

— 

196 

Total revenue from contracts
   with customers

  141 

261 

196 

— 

90 

90 

325 

55 

(12)   

— 

251 

619 

23 

302 

325 

10 

— 

283 

— 

204 

497 

10 

— 

10 

— 

— 

— 

  1,023 

— 

  123 

122 

12 

  407 

— 

— 

122 

— 

— 

— 

— 

5 

(5)    543 

7 

  2,101 

— 

58 

— 

  965 

— 

  1,023 

(1) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
Refer  to  Note  4(K)  for  further  details.  In  addition,  during  the  third  quarter  of  2020,  merchant  revenue  within  this  segment  was  reclassified  from  revenue  from 
contracts with customers to revenue from other and prior periods were adjusted.
(2) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.
(3) Total rental income, including contingent rent related to certain PPAs and other long-term contracts that meet the criteria of operating leases. 
(4) Includes merchant revenue and other miscellaneous.

Year ended Dec. 31, 2019

Hydro

Wind
and
Solar

North 
American
Gas(1)

Australian
Gas

Alberta 

Thermal(2) Centralia(2)

Energy
Marketing

Corporate 
and Other

Total

142 

244 

190 

Revenues from contracts with 
   customers
Revenue from leases(3)

Revenue from derivatives and
   other trading activities

Government incentives
Revenue from other(4)

Total revenue

— 

— 

— 

14 

156 

— 

18 

8 

42 

312 

Revenues from contracts with customers

Timing of revenue recognition

   At a point in time

   Over time

— 

142 

27 

217 

Total revenue from contracts 
with customers

142 

244 

— 

2 

— 

17 

209 

— 

190 

190 

87 

65 

— 

— 

8 

160 

— 

87 

87 

395 

65 

(17)   

— 

373 

816 

41 

354 

395 

10 

— 

160 

— 

401 

571 

10 

— 

10 

— 

— 

129 

— 

— 

129 

— 

— 

— 

— 

  1,068 

— 

  130 

4 

  296 

— 

8 

(10)    845 

(6)    2,347 

— 

78 

— 

  990 

— 

  1,068 

(1) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
Refer  to  Note  4(K)  for  further  details.  In  addition,  during  the  third  quarter  of  2020,  merchant  revenue  within  this  segment  was  reclassified  from  revenue  from 
contracts with customers to revenue from other and prior periods were adjusted.
(2) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.
(3) Total rental income, including contingent rent related to certain PPAs and other long-term contracts that meet the criteria of operating leases.
(4) Includes merchant revenue and other miscellaneous.

TransAlta Corporation    |    2020  Annual Integrated Report

F39

TRANSALTA CORPORATION F39

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Wind and
Solar

North 
American 
Gas(1)

Australian
Gas

Alberta 

Thermal(2) Centralia(2)

Energy

Marketing Corporate Total

Year ended Dec. 31, 2018

Hydro

Revenues from contracts with 
   customers
Revenue from leases(3)

Revenue from derivatives and
   other trading activities

Government incentives
Revenue from other(4)

  132 

7 

— 

— 

17 

206 

27 

(20)   

16 

53 

206 

— 

4 

— 

22 

232 

Total revenue

  156 

282 

Revenues from contracts with customers

Timing of revenue recognition

   At a point in time

   Over time

— 

  132 

18 

188 

— 

206 

Total revenue from contracts 
with customers

  132 

206 

206 

91 

68 

— 

— 

6 

165 

— 

91 

91 

517 

68 

(1)   

— 

328 

912 

38 

479 

517 

9 

— 

115 

— 

318 

442 

9 

— 

9 

— 

— 

67 

— 

— 

67 

— 

— 

— 

— 

 1,161 

— 

  170 

— 

  165 

— 

16 

(7)    737 

(7)   2,249 

— 

65 

— 

 1,096 

— 

 1,161 

(1) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
Refer  to  Note  4(K)  for  further  details.  In  addition,  during  the  third  quarter  of  2020,  merchant  revenue  within  this  segment  was  reclassified  from  revenue  from 
contracts with customers to revenue from other and prior periods were adjusted.
(2) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.
(3) Total rental income, including contingent rent related to certain PPAs and other long-term contracts that meet the criteria of operating leases.
(4) Includes merchant revenue and other miscellaneous.

The Corporation has recognized the following revenue-related contract liabilities:
B. Contract Liabilities
Contract liabilities

2020

2019

Balance, beginning of the year
IFRS 16 transition adjustments(1)
Amounts transferred to revenue included in opening balance

Consideration received

Increases due to interest accrued and expensed during the period

Contract termination associated with the purchase of Keephills 3 (Note 4(R))

Consideration paid

Performance obligations satisfied

Balance, end of year

Current portion

Long-term portion

15 

— 

(1)   

1 

— 

— 

2 

(2)   

15 

1 

14 

88 

15 

(10) 

5 

5 

(88) 

— 

— 

15 

1 

14 

(1) In 2019, on transition to IFRS 16, some contracts that were previously considered leases under IAS 17 did not meet the definition of a lease under IFRS 16 and 
therefore were assessed under IFRS 15 and balances were transferred from deferred revenue to contract liabilities. 

The  opening  contract  liabilities  in  2019  were  primarily  comprised  of  consideration  received  from  the  Corporation’s 
Keephills 3 joint operation partner, Capital Power, for which the Corporation had a future obligation to transfer goods 
and  services  to  Capital  Power  under  the  contract.  On  closing  of  the  Keephills  3  and  Genesee  3  swap,  wherein  the 
Corporation acquired Capital Power's 50 per cent ownership interest in Keephills 3 and sold its 50 per cent ownership 
interest in Genesee 3, the agreement with Capital Power was terminated in 2019 and the Corporation no longer had any 
further performance obligations and the related contract liability balance was recognized in net earnings. 

The  remaining  contract  liabilities  outstanding  at  Dec.  31,  2020,  and  Dec.  31,  2019,  primarily  relate  to  prepayments 
relating  to  the  Corporation's  New  Richmond  and  Bone  Creek  facilities  where  the  Corporation  still  has  to  fulfil  its 
performance obligations. 

F40

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F40

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The  following  disclosures  regarding  the  aggregate  amounts  of  transaction  prices  allocated  to  remaining  performance 
obligations  (contract  revenues  that  have  not  yet  been  recognized)  for  contracts  in  place  at  the  end  of  the  reporting 
C. Remaining Performance Obligations
period exclude revenues related to contracts that qualify for the following practical expedients:

▪

▪

The  Corporation  recognizes  revenue  from  the  contract  in  an  amount  that  is  equal  to  the  amount  invoiced  
where the amount invoiced represents the value to the customer of the service performed to date. Certain of 
the Corporation’s contracts at some of its wind, hydro, gas and solar facilities, and within its commercial and 
industrial business, qualify for this practical expedient. For these contracts, the Corporation is not required to 
disclose information about the remaining unsatisfied performance obligations.
Contracts with an original expected duration of less than 12 months. 

Additionally, in many of the Corporation’s contracts, elements of the transaction price are considered constrained, such 
as for variable revenues dependent upon future production volumes that are driven by customer or market demand or 
market  prices  that  are  subject  to  factors  outside  the  Corporation’s  influence.  Future  revenues  that  are  related  to 
constrained  variable  consideration  are  not  included  in  the  disclosure  of  remaining  performance  obligations  until  the 
constraints are resolved. Further, adjustments to revenue to recognize a significant financing component in a contract 
are not included in the amounts disclosed for remaining performance obligations. 

As  a  result,  the  amounts  of  future  revenues  disclosed  below  represent  only  a  portion  of  future  revenues  that  are 
expected to be realized by the Corporation from its contractual portfolio.

Hydro
At  Dec.  31,  2020,  the  Corporation's  PPA  with  the  Balancing  Pool  to  provide  the  capacity  of  12  hydro  facilities 
throughout  the  province  of  Alberta  concluded.  Future  production  will  be  sold  into  the  merchant  market.  The 
Corporation has contracts for blackstart services at specific hydro facilities, which will conclude at the end of 2030. The 
Corporation  also  has  a  contract  with  the  Government  of  Alberta  to  manage  water  on  the  Bow  River  for  flood  and 
drought mitigation purposes, which concludes in 2021. 

Estimated future revenues related to the remaining performance obligations for these contracts as of Dec. 31, 2020, are 
approximately  $31  million,  which  the  Corporation  expects  to  recognize  approximately  $8  million  in  2021  and 
approximately $2 million to $3 million annually from 2022-2030.

The practical expedient allowing the recognition of revenue from the contract in an amount that is equal to the amount 
invoiced is applied to all hydro energy contracts in Ontario, British Columbia and Washington; accordingly, disclosures 
related to remaining performance obligations are not provided for these contracts.

Wind and Solar
At  Dec.  31,  2020,  the  Corporation  had  long-term  contracts  with  customers  to  deliver  electricity  and  the  associated 
renewable  energy  credits  from  three  wind  facilities  located  in  Alberta,  Minnesota  and  Quebec,  for  which  the  invoice 
practical  expedient  is  not  applied.  The  PPAs  generally  require  all  available  generation  to  be  provided  to  customers  at 
fixed prices, with certain pricing subject to annual escalations for inflation. The Corporation expects to recognize such 
amounts  as  revenue  as  it  delivers  electricity  over  the  remaining  terms  of  the  contracts,  until  2024,  2034  and  2033, 
respectively. Electricity delivered is ultimately dependent upon the wind resource, which is outside of the Corporation’s 
control.  Amounts  delivered,  and  therefore  revenue  recognized,  in  the  future  will  vary.  These  variable  revenues  for 
electricity  delivered  are  considered  to  be  fully  constrained,  and  will  be  recognized  over  time  as  the  performance 
obligation, the delivery of electricity, is satisfied. Accordingly, these revenues are excluded from these disclosures. The 
Corporation also has contracts to sell renewable energy certificates generated at merchant wind facilities and expects 
to recognize revenues as it delivers the renewable energy certificates to the purchasers over the remaining terms of the 
contracts, from 2020 through 2024.

Estimated future revenues related to the remaining performance obligations for these contracts as of Dec. 31, 2020, are 
approximately  $13  million,  of  which  the  Corporation  expects  to  recognize  between  approximately  $2  million  to 
$5 million annually through to contract expiry. 

The practical expedient allowing the recognition of revenue from the contract in an amount that is equal to the amount 
invoiced  is  applied  to  wind  energy  contracts  in  Ontario,  New  Brunswick,  Quebec  and  Wyoming,  and  for  all  solar 
contracts; accordingly, disclosures related to remaining performance obligations are not provided for these contracts.

TransAlta Corporation    |    2020  Annual Integrated Report

F41

TRANSALTA CORPORATION F41

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

North American  Gas
At Dec. 31, 2020, the Corporation has contracts with customers to deliver energy services from one of its gas facilities in 
Ontario. The contracts all consist of a single performance obligation requiring the Corporation to stand ready to deliver 
electricity and steam. A summary of the key terms of these contracts is set out below. 

The energy supply agreements require specified amounts of steam to be delivered to each customer, and have pricing 
terms  that  include  fixed  and  variable  charges  for  electricity,  capacity  and  steam,  as  well  as  a  true-up  based  on 
contractual  minimum  volumes  of  steam.  The  steam  reconciliation  is  based  on  an  estimate  of  the  customer’s  steam 
volume taken and the contractual minimum  volume,  and  various factors including the annual average market price of 
electricity and the average locally posted and index prices of natural gas, as well as transportation. For steam volumes 
not taken by the customer, a revenue-sharing mechanism provides for sharing of revenues earned by the Corporation 
using that steam to generate and sell electricity. Capacity and electricity pricing vary from contract to contract and are 
subject  to  annual  indexation  at  varying  rates.  Electricity  and  steam  delivered  is  ultimately  dependent  upon  customer 
requirements, which is outside of the Corporation’s control. The variable revenues under the contracts are considered 
to  be  fully  constrained.  Accordingly,  these  revenues  are  excluded  from  these  disclosures.  The  Corporation  expects  to 
recognize revenue as it delivers electricity and steam until the completion of the contract in late 2022. 

At the same gas facility, the Corporation has a contract with the local power authority with fixed capacity charges that 
are  adjusted  for  seasonal  fluctuations,  steam  demand  from  the  plant’s  other  customers  and  for  deemed  net  revenue 
related to production of electricity into the market. As a result, revenues recognized in the future will vary as they are 
dependent  upon  factors  outside  of  the  Corporation’s  control  and  are  considered  to  be  fully  constrained.  Accordingly, 
these  revenues  are  excluded  from  these  disclosures.  The  Corporation  expects  to  recognize  such  revenue  as  it  stands 
ready to deliver electricity until the completion of the contract term on Dec. 31, 2025.

At Dec. 31, 2020, the Corporation had contracts with customers to deliver steam, hot water and chilled water from one 
of its other gas facilities in Ontario, extending through 2023. Prices under these contracts are at fixed base amounts per 
gigajoule and are subject to escalation annually for both gas prices and inflation. The contracts include minimum annual 
take-or-pay volumes. 

The Corporation's contract with its customer for provision of steam and electricity output at its Alberta cogeneration 
facility, effective Jan. 1, 2020 through Dec. 31, 2029, is considered an operating lease resulting in some revenues being 
classified  for  accounting  purposes  as  variable  lease  revenues.  Other  revenue  streams  are  based  on  cost-recovery 
mechanisms  and  thus  are  variable  in  nature  and  are  considered  to  be  fully  constrained  and  excluded  from  these 
disclosures.

Estimated future revenues related to the remaining performance obligations for these contracts as of Dec. 31, 2020, are 
approximately $13 million in total, of which the Corporation expects to recognize between approximately $4 million to 
$5 million annually for the duration of the contracts.

The practical expedient allowing the recognition of revenue from the contract in an amount that is equal to the amount 
invoiced  is  applied  to  some  of  the  Corporation’s  other  gas  facilities’  contracts  in  Ontario  and  the  United  States; 
accordingly, disclosures related to remaining performance obligations are not provided for these contracts.

Australian Gas
At  Dec.  31,  2020,  the  Corporation  has  PPAs  with  customers  to  deliver  electricity  from  its  gas  facilities  located  in 
Australia. The PPAs generally call for all available generation to be provided to customers. Pricing terms include fixed 
and variable price components for delivered electricity and fixed capacity payments. Prices may be subject to true-up 
adjustments for deviations from expected heat rates and are subject to various escalators to reflect inflation. Electricity 
delivered  is  ultimately  dependent  upon  customer  requirements,  which  is  outside  of  the  Corporation’s  control.  These 
variable  revenues  for  electricity  delivered  are  considered  to  be  fully  constrained,  and  will  be  recognized  at  a  point  in 
time  as  the  performance  obligation,  the  delivery  of  electricity,  is  satisfied.  Accordingly,  these  revenues  are  excluded 
from these disclosures. The contracts have durations that range from 2026 to 2042. 

One of the Corporation's PPA with its customer to deliver electricity from its gas facilities is considered a finance lease 
resulting in some revenues being classified for accounting purposes as finance lease income. The Corporation also earns 
revenues from providing operation and maintenance services for the facility for a fixed monthly fee. Pricing is subject to 
periodic review under the PPA and subject to  escalation to reflect inflation out to the end of the contract in 2038. Other 
revenue  streams  are  based  on  cost-recovery  mechanisms  and  thus  are  variable  in  nature  and  considered  to  be  fully 
constrained and excluded from these disclosures.

F42

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F42

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Estimated future revenues related to the remaining performance obligations for these contracts as at Dec. 31, 2020, are 
approximately $2,594 million, of which the Corporation expects to recognize approximately $203 million in total over 
the next two fiscal years and on average, between approximately $100 million to $126 million annually thereafter for 
the duration of the remaining contract.

Alberta Thermal
At  Dec.  31,  2020,  the  Corporation's  PPAs  with  the  Balancing  Pool  for  capacity  and  electricity  from  two  of  its  coal 
facilities concluded. Future production will  be sold into the merchant market.   

The Corporation also has several contracts for sale of byproducts of coal combustion from certain of its coal facilities. 
The  contracts  range  in  duration  from  one  to  three  years.  Generally,  revenues  vary  based  on  market  prices  that  are 
subject  to  factors  outside  of  the  Corporation’s  control,  and  the  quantities  delivered  and  sold,  which  are  ultimately 
dependent  upon  customer  demand.  These  variable  revenues  are  considered  to  be  fully  constrained,  and  will  be 
recognized at a point in time as the performance obligation, the delivery of byproducts, is satisfied. Accordingly, these 
revenues are excluded from these disclosures. 

The  Corporation  has  a  contract,  commencing  in  late  2023,  for  the  sale  of  capacity  and  electricity,  exercisable  at  the 
option  of  the  customer,  under  which  the  Corporation  will  receive  a  fixed  capacity  payment  and  variable  energy 
payments based on production.  Estimated future revenues related to the remaining performance obligations for these 
contracts  as  of  Dec.  31,  2020,  are  approximately  $336  million,  of  which  the  Corporation  expects  to  recognize  on 
average, between $5 million to $10 million in 2023 and $40 million to $45 million annually thereafter for the duration of 
the contracts. 

Centralia
The Corporation’s long-term contract for the sale of electricity produced at its US Coal plant is considered a derivative 
and  is  designated  as  an  all-in-one  hedge.  Accordingly,  while  revenues  for  electricity  delivered  to  the  customer  are 
recognized pursuant to the contractual terms, the revenues are not accounted for under IFRS 15 and the contract has 
been excluded from any required IFRS 15 disclosures.

The  Corporation  also  has  a  contract  for  the  sale  of  byproducts  of  coal  combustion  from  its  US  Coal  plant.  Generally, 
revenues vary based on market prices that are subject to factors outside of the Corporation’s control, and the quantities 
delivered and sold, which are ultimately dependent upon customer demand. These variable revenues are considered to 
be fully constrained, and will be recognized at a point in time as the performance obligation, the delivery of byproducts, 
is satisfied. Accordingly, these revenues are excluded from these disclosures.

Expenses classified by nature are as follows:
Year ended Dec. 31
6. Expenses by Nature

2020

2019

2018

Fuel, carbon 
compliance 
and
purchased
power

Operations,
maintenance 
and
administration

Fuel, carbon 
compliance 
and
purchased
power

Operations,
maintenance 
and
administration

Fuel, carbon 
compliance 
and
purchased
power

Operations,
maintenance 
and
administration

Fuel and carbon compliance

Coal inventory writedown (Note 17)

Purchased power

Mine depreciation

Salaries and benefits

Other operating expenses

Total

574 

37 

163 

144 

50 

— 

968 

— 

— 

— 

— 

235 

237 

472 

669 

— 

246 

119 

52 

— 

1,086 

— 

— 

— 

— 

228 

247 

475 

656 

— 

210 

136 

98 

— 

1,100 

— 

— 

— 

— 

245 

270 

515 

TransAlta Corporation    |    2020  Annual Integrated Report

F43

TRANSALTA CORPORATION F43

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

As  part  of  the  Corporation’s  monitoring  controls,  long-range  forecasts  are  prepared  for  each  CGU.  The  long-range 
forecast  estimates  are  used  to  assess  the  significance  of  potential  indicators  of  impairment  and  provide  criteria  to 
7. Asset Impairment and Reversals
evaluate  adverse  changes  in  operations.  The  Corporation  also  considers  the  relationship  between  its  market 
capitalization and its book value, among other factors, when reviewing for indicators of impairment. When indicators of 
impairment are present, the Corporation estimates a recoverable amount for each CGU by calculating an approximate 
fair value less costs of disposal using discounted cash flow projections based on the Corporation’s long-range forecasts. 
The  valuations  used  are  subject  to  measurement  uncertainty  based  on  assumptions  and  inputs  to  the  Corporation’s 
long-range  forecast,  including  changes  to  fuel  costs,  operating  costs,  capital  expenditures,  external  power  prices  and 
useful lives of the assets extending to the last planned asset retirement in 2073. 

Sundance Unit 3
In the third quarter of 2020, the Corporation recognized an impairment on Sundance Unit 3 in the amount of $70 million 
A. 2020 
in  the  Alberta  Thermal  segment,  due  to  the  Corporation's  decision  to  retire  the  unit  (see  Note  4(O)).  Previously,  the 
Corporation  had  expected  Sundance  Unit  3  to  remain  mothballed  until  November  2021.  As  there  were  no  estimated 
future cash flows from power generation expected to be derived from the unit, the unit was removed from the Alberta 
merchant CGU and immediately written down to the recoverable value of the scrap materials.  

BC Hydro Facility
In  the  third  quarter  of  2020,  the  Corporation  recorded  an  impairment  of  $2  million  in  the  Hydro  segment,  due  to  a 
review of water resources that resulted in a revision to the forecasted production at a BC hydro facility. The impairment 
assessment  was  based  on  fair  value  less  costs  of  disposal  using  discounted  cash  flow  projections  based  on  the 
Corporation's  long-range  forecasts.  The  resulting  fair  value  measurement  is  categorized  as  a  Level  III  fair  value 
measurement. The key assumptions impacting the determination of fair value are electricity production and sales prices, 
which are subject to measurement uncertainty. 

Centralia Land
In the fourth quarter of 2020, the Corporation recognized an impairment of $9 million (US$7 million) in the Centralia 
segment due to a decrease in the fair value of the land determined through a third-party appraiser.

In addition to the asset impairments noted above, a net asset impairment of $3 million was recognized for changes in the 
decommissioning  and  restoration  liabilities  related  to  the  Centralia  mine  and  Sundance  Unit  1,  which  are  no  longer 
operating and have reached the end of their useful lives (see Note 23). 

Centralia Thermal Facility
In 2012, the Corporation recorded an impairment of $347 million relating to the Centralia thermal facility CGU. As part 
B. 2019 
of  the  annual  impairment  test,  the  Corporation  considers  possible  indicators  of  impairment  at  the  Centralia  thermal 
facility CGU. In 2019, an internal valuation indicated the fair value less costs of disposal of the Centralia thermal facility 
CGU  exceeded  the  carrying  value,  resulting  in  a  full  recoverability  test  in  2019.  The  updated  fair  value  included 
sustained  changes  in  the  power  price  market  and  cost  of  coal  due  to  contract  renegotiations.  As  a  result  of  the 
recoverability test, an impairment reversal of $151 million was recorded in the Centralia segment.  

The valuations are categorized as Level III fair value measurements and subject to measurement uncertainty based on 
the key assumptions outlined below, and on inputs to the Corporation’s long-range forecast, including changes to fuel 
costs, operating costs, capital expenses and the level of contractedness under the Memorandum of Agreement ("MOA") 
for  coal  transition  established  with  the  State  of  Washington.  The  valuation  period  includes  cash  flows  until  the 
decommissioning of the facility in 2025. 

The  Corporation  utilized  the  Corporation's  long-range  forecast  and  the  following  key  assumptions  in  2019  compared 
with 2016 assumptions, which was the most recent detailed valuation:  

Mid-Columbia annual average power prices

US$30 to US$42 per MWh

US$22 to US$46 per MWh

On-highway diesel fuel on coal shipments

US$2.35 to US$2.40 per gallon

US$1.69 to US$2.09 per gallon

Discount rates

5.2 to 6.4 per cent

5.4 to 5.7 per cent

2019

2016

F44

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F44

 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

During 2019, the Corporation adjusted the Centralia mine decommissioning and restoration provision as management 
no longer believes that the fine coal recovery and reclamation work will occur as originally proposed. At the end of 2019, 
the Corporation's best estimate of the decommissioning and restoration provision increased by $141 million. Since the 
Centralia  mine  is  no  longer  operating  and  reached  the  end  of  its  useful  life  in  2006,  this  adjustment  results  in  the 
immediate recognition of the full $141 million, through asset impairment charges in net earnings. 

Refer to Note 3(A)(III) and 23 for further details on the Centralia mine decommissioning and restoration provision. 

Assets Held for Sale
In the fourth quarter of 2019, the Corporation identified several trucks and associated inventory to be sold within the 
Alberta  Thermal  segment  and  accordingly  wrote  the  assets  down  to  net  realizable  value,  resulting  in  an  impairment 
charge of $15 million. 

Sundance Unit 2
C. 2018 
In the third quarter of 2018, the Corporation recognized an impairment charge on Sundance Unit 2 in the amount of $38 
million, due to the Corporation’s decision to retire Sundance Unit 2. Previously, the Corporation had expected Sundance 
Unit 2 to remain mothballed for a period of up to two years and therefore remain within the Alberta merchant CGU. The 
impairment assessment was based on value in use and included the estimated future cash flows expected to be derived 
from the unit until its retirement on July 31, 2018. Discounting did not have a material impact. 

Lakeswind and Kent Breeze
On  May  31,  2018,  TransAlta  Renewables  acquired  an  economic  interest  in  Lakeswind  through  the  subscription  of 
tracking  preferred  shares  of  a  subsidiary  of  the  Corporation  and  also  purchased  Kent  Breeze  (see  Note  4(V)).  In 
connection with these acquisitions, the assets were fair valued using discount rates that average approximately seven 
per cent. Accordingly, the Corporation has recorded an impairment of $12 million using the valuation in the agreement 
as the indicator of fair value less cost of disposal in 2018. The impairment charge had an $11 million impact on PP&E and 
a $1 million impact on intangible assets (refer to Note 18 and 20).

During  2020,  the  Corporation  wrote  off  nil  (2019  —  $18  million;  2018  —  $23  million)  in  project  development  costs 
related to projects that are no longer proceeding.  
D. Project Development Costs

Amounts receivable under the Corporation’s finance leases associated with the Poplar Creek cogeneration facility and 
in 2020, the Southern Cross Energy facilities are as follows:
8. Finance Lease Receivables
As at Dec. 31

2020

2019

Within one year

Second to fifth years inclusive

More than five years

Less: unearned finance lease income

Total finance lease receivables

Included in the Consolidated Statements of Financial Position as:

Current portion of finance lease receivables (Note 14)

 Long-term portion of finance lease receivables

Minimum
lease
receipts

Present 
value of
minimum 
lease
receipts

Minimum
lease
receipts

Present 
value of
minimum 
lease
receipts

56 

126 

82 

264 

— 

264 

63 

169 

100 

332 

68 

264 

36 

228 

264 

20 

74 

97 

191 

— 

191 

20 

80 

120 

220 

29 

191 

15 

176 

191 

TransAlta Corporation    |    2020  Annual Integrated Report

F45

TRANSALTA CORPORATION F45

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Net other operating income includes the following:
Year ended Dec. 31
9. Net Other Operating Income
Coal supply agreement

Alberta Off-Coal Agreement

Insurance recoveries

Other expenses

Net other operating income

2020

2019

2018

29 

(40)   

— 

— 

(11)   

— 

(40)   

(10)   

1 

(49)   

— 

(40) 

(7) 

— 

(47) 

During the fourth quarter of 2020, an onerous contract provision of $29 million was recognized as a result of a decision 
to  accelerate  our  plans  to  eliminate  coal  as  a  fuel  source  by  the  end  of  2021  at  the  Sheerness  facility.  The  last  coal 
A.Onerous Contract Provision for Coal Supply Agreement 
shipment is expected to be received during the first quarter of 2021, while payments required under the contract will 
continue until 2025.

The Corporation receives payments from the Government of Alberta for the cessation of coal-fired emissions from its 
interest in the Keephills 3, Genesee 3 and Sheerness coal-fired plants on or before Dec. 31, 2030. The swap of ownership 
B. Alberta Off-Coal Agreement
interests in Keephills 3 and Genesee 3 did not impact the payments received. Refer to Note 4(R) for further details.

Under the terms of the OCA, the Corporation receives annual cash payments on or before July 31 of approximately $40 
million ($37 million, net to the Corporation), which commenced Jan. 1, 2017, and will terminate at the end of 2030. The 
Corporation recognizes the off-coal payments evenly throughout the year. Receipt of the payments is subject to certain 
terms and conditions. The OCA’s main condition is the cessation of all coal-fired emissions on or before Dec. 31, 2030. 
The  affected  plants  are  not,  however,  precluded  from  generating  electricity  at  any  time  by  any  method,  other  than 
generation  resulting  in  coal-fired  emissions  after  Dec.  31,  2030.  In  July  2018,  the  Corporation  obtained  financing 
against the OCA payments. Refer to Note 4(X) and 24 for further details. 

There were no insurance recoveries in 2020.
C. Insurance Recoveries
During  2019,  the  Corporation  received  $10  million  in  insurance  recoveries,  which  related  to  insurance  proceeds  for 
tower fires at Wyoming  and Summerview. 

During  2018,  the  Corporation  received  $7  million  in  insurance  recoveries,  of  which  $6  million  related  to  insurance 
proceeds for the tower fire at Wyoming and a $1 million claim related to equipment repairs within Alberta Thermal. 

The Corporation’s investments in joint ventures and associates that are accounted for using the equity method consist 
of its investments in Skookumchuck and EMG.
10. Investments
The change in investments is as follows:

Balance, Dec. 31, 2019

Contributions(1)

Equity income 

Change in foreign exchange rates

Balance, Dec. 31, 2020

Skookumchuck

EMG

— 

86 

1 

(2)   

85 

— 

16 

— 

(1)   

15 

Total

— 

102 

1 

(3) 

100 

(1) Contributions were paid in US dollars and were US$66 million for Skookumchuck and US$12 million for EMG, including contingent consideration. 

F46

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F46

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Summarized  financial  information  on  the  results  of  operations  relating  to  the  Corporation’s  pro-rata  interests  in 
Skookumchuck and EMG is as follows:

Year ended Dec. 31

Results of operations

Revenues

Expenses

Proportionate share of net earnings

2020

3 

(2) 

1 

On Nov. 25, 2020, TransAlta purchased  a  49 per  cent  interest in Skookumchuck, a 136.8 MW wind facility located in 
Lewis and Thurston counties near Centralia in Washington state consisting of 38 Vestas 136 wind turbines. Summarized 
financial information relating to 100 per cent of Skookumchuck, including adjustments for the application of consistent 
accounting policies and the Corporation’s purchase price adjustments, is as follows:

Year ended Dec. 31

Revenues

Depreciation and amortization
Interest expense
Net earnings

Other comprehensive loss

Total comprehensive loss

As at Dec.  31

Current assets

Non-current assets

Current liabilities

Non-current liabilities

Net assets
Additional items included above

Cash and cash equivalents
Current financial liabilities(1)
Non-current financial liabilities(1)

2020
6 

2 

1 

3 

— 

3 

2020

6 

382 

(65) 

(150) 

173 

1 
(27) 

(147) 

(1) Excludes trade and other payables and provisions.

A reconciliation of the carrying amount to the Corporation’s 49 per cent interest in the Skookumchuck is as follows:

As at  Dec. 31

Net assets

Less: 51 per cent of Skookumchuck net assets not owned by the Corporation

Net investment

2020

173 

(88) 

85 

Skookumchuck’s ability to make distributions to its owners, including the Corporation, is dependent on available cash 
flow and is restricted by covenants and conditions, including principal and interest funding requirements imposed by the 
tax equity financing agreements.

Skookumchuck's approximate future payments under contractual commitments are as follows:

Long-term service agreements(1)

2021

1 

2022

1 

2023

1 

2024

1 

(1) Refer to Note 36 for further details on long-term service agreements.

2025

1 

2026 and 
thereafter

28 

Total

33 

TransAlta Corporation    |    2020  Annual Integrated Report

F47

TRANSALTA CORPORATION F47

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The components of net interest expense are as follows: 
Year ended Dec. 31
11. Net Interest Expense
Interest on debt

Interest on exchangeable securities (Note 25)

Interest income

Capitalized interest (Note 18)

Loss on redemption of bonds (Note 24)

Interest on lease liabilities

Credit facility fees, bank charges and other interest
Tax shield on tax equity financing (Note 24)(1)
Interest on line loss rule proceeding (Note 36(I)(I))
Other(2)
Accretion of provisions (Note 23)

Net interest expense

2020

158 

34 

(10)   

(8)   

— 

8 

18 

1 

5 

2 

30 

238 

2019

161 

20 

(13)   

(6)   

— 

4 

15 

(35)   

— 

10 

23 

179 

2018

184 

— 

(11) 

(2) 

24 

3 

13 

— 

— 

15 

24 

250 

(1)  Relates  to  the  tax  benefit  associated  with  bonus  tax  depreciation  claimed  in  2019  on  the  Big  Level  and  Antrim  projects  that  was  assigned  to  the  tax  equity 
investor. The tax equity investment is treated as debt under IFRS and the monetization of the tax depreciation is considered a non-cash reduction of the debt balance 
and is reflected as a reduction in interest expense.
(2) In 2020, other interest expense included approximately nil (2019 — $5 million, 2018 — $7 million) for the significant financing component required under IFRS 
15. In addition, in 2018, approximately $5 million of costs were expensed due to project-level financing that is no longer practicable.  

F48

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F48

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

12. Income Taxes
I. Rate Reconciliations
A. Consolidated Statements of Earnings
Year ended Dec. 31

Earnings (loss) before income taxes

Net earnings (loss) attributable to non-controlling interests not subject to tax

Adjusted earnings (loss) before income taxes

Statutory Canadian federal and provincial income tax rate (%)

Expected income tax expense (recovery)

Increase (decrease) in income taxes resulting from:

Differences in effective foreign tax rates

Deferred income tax expense related to temporary difference on investment in 
  subsidiaries

Writedown (reversal of writedown) of deferred income tax assets

Statutory and other rate differences

Other

Income tax expense (recovery)

Effective tax rate (%)

II. Components of Income Tax Expense
The components of income tax expense are as follows:

Year ended Dec. 31

Current income tax expense

Deferred income tax expense (recovery) related to the origination and reversal of 
   temporary differences

Deferred income tax expense related to temporary difference on investment in 
   subsidiary
Deferred income tax recovery resulting from changes in tax rates or laws(1)

Deferred income tax expense (recovery) arising from the writedown (reversal of 
   writedown) of deferred income tax assets(2)

Income tax expense (recovery)

Year ended Dec. 31

Current income tax expense

Deferred income tax recovery

Income tax expense (recovery)

2020

(303) 

2 

(301) 

 24.5% 

(74) 

3 

9 

8 

(7) 

11 

(50) 

 17% 

2020

35 

(95)   

9 

(7)   

8 

(50)   

2019

193 

(26) 

167 

 26.5% 

44 

5 

— 

(9) 

(31) 

8 

17 

 10% 

2019

35 

22 

— 

(31)   

(9)   

17 

2018

(96) 

(19) 

(115) 

 26.8% 

(31) 

(3) 

— 

27 

— 

1 

(6) 

 5% 

2018

28 

(61) 

— 

— 

27 

(6) 

2020

2019

2018

35 

(85)   

(50)   

35 

(18)   

17 

28 

(34) 

(6) 

(1)  In 2020 the Corporation recognized a deferred income tax recovery of $7 million (2019 —$31 million) related to a decrease in the Alberta corporate tax rate from 
11 per cent to 8 per cent. The tax decrease was originally scheduled as follows: 11 per cent effective July 1, 2019, 10 per cent effective Jan. 1, 2020, 9 per cent 
effective Jan. 1, 2021, and 8 per cent effective Jan. 1, 2022.  The Government of Alberta enacted the rate to decrease to 8 per cent effective Dec. 9, 2020.  
(2) During the year ended Dec. 31, 2020, the Corporation recorded a writedown of deferred tax assets of $8 million (2019 — $9 million writedown reversal, 2018 — 
$27 million writedown). In the current year additional deferred tax assets were created from the recognition of other comprehensive losses in the US. The deferred 
income tax assets mainly relate to the tax benefits of losses associated with the Corporation’s directly owned US operations. The Corporation evaluates at each period 
end, whether it is probable that sufficient future taxable income would be available from the Corporation’s directly owned US operations to utilize the underlying tax 
losses.  

TransAlta Corporation    |    2020  Annual Integrated Report

F49

TRANSALTA CORPORATION F49

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The aggregate current and deferred income tax related to items charged or credited to equity are as follows:
B. Consolidated Statements of Changes in Equity
Year ended Dec. 31
Income tax expense (recovery) related to:

2020

2019

Net impact related to cash flow hedges

Net actuarial gains (losses)

Income tax expense reported in equity

(23)   

(3)   

(26)   

6 

(7)   

(1)   

Significant components of the Corporation’s deferred income tax assets (liabilities) are as follows:
C. Consolidated Statements of Financial Position
As at Dec. 31
Net operating loss carryforwards(1)
Future decommissioning and restoration costs

Property, plant and equipment

Risk management assets and liabilities, net

Employee future benefits and compensation plans

Interest deductible in future periods

Foreign exchange differences on US-denominated debt

Other deductible temporary differences

Net deferred income tax liability, before writedown of deferred income tax assets

Writedown of deferred income tax assets

Net deferred income tax liability, after writedown of deferred income tax assets

(1) Net operating losses expire between 2029 and 2039.

2020

469 

140 

(717)   

(107)   

62 

22 

31 

2 

(98)   

(247)   

(345)   

The net deferred income tax liability is presented in the Consolidated Statements of Financial Position as follows:

As at Dec. 31
Deferred income tax assets(1)

Deferred income tax liabilities

Net deferred income tax liability

2020

51 

(396)   

(345)   

2018

(12) 

5 

(7) 

2019

494 

122 

(828) 

(141) 

56 

42 

40 

4 

(211) 

(243) 

(454) 

2019

18 

(472) 

(454) 

(1)  The  deferred  income  tax  assets  presented  on  the  Consolidated  Statements  of  Financial  Position  are  recoverable  based  on  estimated  future  earnings  and  tax 
planning strategies. The assumptions used in the estimate of future earnings are based on the Corporation’s long-range forecasts.

As  of  Dec.  31,  2020,  the  Corporation  had  recognized  a  net  liability  of  nil  (2019  —  $1  million)  related  to  uncertain  tax 
positions. 
D. Contingencies

The Corporation’s subsidiaries and operations that have non-controlling interests are as follows:
Subsidiary/Operation
13. Non-Controlling Interests
TransAlta Cogeneration L.P.

49.99% - Canadian Power Holdings Inc.

Non-controlling interest as at Dec. 31, 2020

TransAlta Renewables
Kent Hills Wind LP(1)

(1) Owned by TransAlta Renewables.

39.9% - Public shareholders

17% - Natural Forces Technologies Inc.

TransAlta Cogeneration, L.P. (“TA Cogen”) operates a portfolio of cogeneration facilities in Canada and owns 50 per cent 
of  a  dual-fuel  generating  facility.  TransAlta  Renewables  owns  and  operates  a  portfolio  of  gas  and  renewable  power 
generation  facilities  in  Canada  and  owns  economic  interests  in  various  other  gas  and  renewable  facilities  of  the 
Corporation.

F50

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F50

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Summarized financial information relating to subsidiaries with significant non-controlling interests is as follows:

The  net  earnings,  distributions  and  equity  attributable  to  non-controlling  interests  include  the  17  per  cent  non-
A. TransAlta Renewables
controlling interest in the 167 MW Kent Hills wind facility located in New Brunswick.

On May 31, 2018, TransAlta Renewables implemented a dividend reinvestment plan ("DRIP") for Canadian holders of 
common shares of TransAlta Renewables. Commencing with the dividend paid on July 31, 2018, eligible shareholders 
could  elect  to  automatically  reinvest  monthly  dividends  into  additional  common  shares  of  the  Corporation.  The 
Corporation does not participate in the DRIP.  

In the fourth quarter of 2020, TransAlta Renewables suspended the DRIP in respect of any future declared dividends. 
The dividend paid on Oct. 30, 2020, to shareholders of record on Oct. 15, 2020, was the last dividend payment eligible 
for reinvestment by participating shareholders. Subsequent dividends will be paid only in cash.

As a result of the DRIP and the Share Offering described in Note 4(W), the Corporation’s share of ownership and equity 
participation in TransAlta Renewables has changed as follows:

Period

Aug. 1, 2017 to June 21, 2018

June 22, 2018 to July 30, 2018

July 31, 2018 to Nov. 29, 2018

Nov. 30, 2018 to Dec. 31, 2018

Jan. 1, 2019 to Mar. 31, 2019

April 1, 2019 to June 30, 2019

July 1, 2019 to Sept. 30, 2019

Oct. 1, 2019 to Dec. 31, 2019

Jan. 1, 2020 to Mar. 31, 2020

April 1, 2020 to June 30, 2020

July 1, 2020 to Dec. 31, 2020

Year ended Dec. 31

Revenues

Net earnings

Total comprehensive income

Amounts attributable to the non-controlling interests:

Net earnings

Total comprehensive income

Distributions paid to non-controlling interests

As at Dec. 31

Current assets

Long-term assets

Current liabilities

Long-term liabilities

Total equity

Equity attributable to non-controlling interests

Non-controlling interests’ share (per cent)

Ownership and voting
rights percentage

Equity participation
percentage

 64.0 

 61.1 

 61.0 

 60.9 

 60.8 

 60.6 

 60.5 

 60.4 

 60.3 

 60.2 

 60.1 

 64.0 

 61.1 

 61.0 

 60.9 

 60.8 

 60.6 

 60.5 

 60.4 

 60.3 

 60.2 

 60.1 

2018

462 

241 

281 

94 

110 

79 

2019

293 

3,409 

(152) 

(1,237) 

2020

436 

97 

223 

40 

90 

80 

2019

446 

183 

138 

73 

56 

69 

2020

743 

2,913 

(364)   

(987)   

(2,305)   

(2,313) 

(948)   

39.9

(941) 

39.6

TransAlta Corporation    |    2020  Annual Integrated Report

F51

TRANSALTA CORPORATION F51

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Year ended Dec. 31
B. TA Cogen
Results of operations

Revenues

Net earnings (loss)

Total comprehensive income (loss)

Amounts attributable to the non-controlling interest:

Net earnings (loss)

Total comprehensive income (loss)

Distributions paid to Canadian Power Holdings Inc.

As at Dec. 31

Current assets

Long-term assets

Current liabilities

Long-term liabilities

Total equity

Equity attributable to Canadian Power Holdings Inc.

Non-controlling interest share (per cent)

As at Dec. 31
14. Trade and Other Receivables
Trade accounts receivable
Collateral paid (Note 16)

Current portion of finance lease receivables (Note 8)

Income taxes receivable

Trade and other receivables

Notes to Consolidated Financial Statements

2020

2019

2018

146 

(13)   

(13)   

(6)   

(6)   

17 

181 

43 

43 

21 

21 

37 

2020

69 

323 

(78)   

(37)   

(277)   

(136)   

185 

29 

29 

14 

14 

86 

2019

41 

328 

(27) 

(19) 

(323) 

(160) 

49.99

49.99

2020

488 

49 

36 

10 

583 

2019

399 

42 

15 

6 

462 

F52

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F52

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Financial  assets  and  financial  liabilities  are  measured  on  an  ongoing  basis  at  cost,  fair  value  or  amortized  cost.  The 
15. Financial Instruments
A. Financial Assets and Liabilities – Classification and Measurement
following table outlines the carrying amounts and classifications of the financial assets and liabilities:

Carrying value as at Dec. 31, 2020

Financial assets

Cash and cash equivalents(1)
Restricted cash

Trade and other receivables

Long-term portion of finance lease receivable

Risk management assets

Current
Long-term

Other assets (Note 22)

Financial liabilities

Accounts payable and accrued liabilities

Dividends payable

Risk management liabilities

Current

Long-term

Credit facilities, long-term debt and lease liabilities(2)

Exchangeable securities (Note 25)

(1) Includes cash equivalents of nil.
(2) Includes current portion.

Carrying value as at Dec. 31, 2019

Financial assets

Cash and cash equivalents(1)
Restricted cash

Trade and other receivables

Long-term portion of finance lease receivables

Risk management assets

Current

Long-term

Other assets (Note 22)

Financial liabilities

Accounts payable and accrued liabilities

Dividends payable

Risk management liabilities

Current

Long-term

Credit facilities, long-term debt and lease liabilities(2)

Exchangeable securities (Note 25)

(1) Includes cash equivalents of nil.
(2) Includes current portion.

Derivatives
used for
hedging

Derivatives
held for
trading 
(FVTPL)

Amortized 
cost

Total

— 

— 

— 

— 

102 

471 

— 

— 

— 

10 

— 

— 

— 

— 

— 

— 

— 

69 

50 

— 

— 

— 

84 

68 

— 

— 

703 

71 

583 

228 

— 

— 

52 

599 

59 

— 

— 

703 

71 

583 

228 

171 

521 

52 

599 

59 

94 

68 

3,361 

730 

3,361 

730 

Derivatives
used for
hedging

Derivatives
held for
trading 
(FVTPL)

Amortized 
cost

Total

— 

— 

— 

— 

71 

607 

— 

— 

— 

1 

1 

— 

— 

— 

— 

— 

— 

95 

33 

— 

— 

— 

80 

28 

— 

— 

411 

32 

462 

176 

— 

— 

47 

413 

37 

— 

— 

411 

32 

462 

176 

166 

640 

47 

413 

37 

81 

29 

3,212 

326 

3,212 

326 

TransAlta Corporation    |    2020  Annual Integrated Report

F53

TRANSALTA CORPORATION F53

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a liability in 
B. Fair Value of Financial Instruments
an  orderly  transaction  between  market  participants  at  the  measurement  date.  Fair  values  can  be  determined  by 
reference  to  prices  for  that  instrument  in  active  markets  to  which  the  Corporation  has  access.  In  the  absence  of  an 
active  market,  the  Corporation  determines  fair  values  based  on  valuation  models  or  by  reference  to  other  similar 
products in active markets.

Fair values determined using valuation models require the use of assumptions. In determining those assumptions, the 
Corporation  looks  primarily  to  external  readily  observable  market  inputs.  However,  if  not  available,  the  Corporation 
uses inputs that are not based on observable market data.  

I. Level I, II and III Fair Value Measurements
The  Level  I,  II  and  III  classifications  in  the  fair  value  hierarchy  utilized  by  the  Corporation  are  defined  below.  The  fair 
value  measurement  of  a  financial  instrument  is  included  in  only  one  of  the  three  levels,  the  determination  of  which  is 
based on the lowest level input that is significant to the derivation of the fair value.

a. Level I
Fair  values  are  determined  using  inputs  that  are  quoted  prices  (unadjusted)  in  active  markets  for  identical  assets  or 
liabilities that the Corporation has the ability to access at the measurement date. In determining Level I fair values, the 
Corporation  uses  quoted  prices  for  identically  traded  commodities  obtained  from  active  exchanges  such  as  the  New 
York Mercantile Exchange.

b. Level II
Fair values are determined, directly or indirectly, using inputs that are observable for the asset or liability.

Fair values falling within the Level II category are determined through the use of quoted prices in active markets, which 
in  some  cases  are  adjusted  for  factors  specific  to  the  asset  or  liability,  such  as  basis,  credit  valuation  and  location 
differentials. 

The Corporation’s commodity risk management Level II financial instruments include over-the-counter derivatives with 
values based on observable commodity futures curves and derivatives with inputs validated by broker quotes or other 
publicly  available  market  data  providers.  Level  II  fair  values  are  also  determined  using  valuation  techniques,  such  as 
option pricing models and interpolation formulas, where the inputs are readily observable.

In  determining  Level  II  fair  values  of  other  risk  management  assets  and  liabilities,  the  Corporation  uses  observable 
inputs  other  than  unadjusted  quoted  prices  that  are  observable  for  the  asset  or  liability,  such  as  interest  rate  yield 
curves and currency rates. For certain financial instruments where insufficient trading volume or lack of recent trades 
exists, the Corporation relies on similar interest or currency rate inputs and other third-party information such as credit 
spreads.

c. Level III
Fair values are determined using inputs for the assets or liabilities that are not readily observable. 

The  Corporation  may  enter  into  commodity  transactions  for  which  market-observable  data  is  not  available.  In  these 
cases, Level III fair values are determined using valuation techniques such as  mark-to-forecast and mark-to-model. For 
mark-to-model valuations, derivative pricing models, regression-based models and historical bootstrap models may be 
employed. The model inputs may be based on historical data such as unit availability, transmission congestion, demand 
profiles  for  individual  non-standard  deals  and  structured  products,  and/or  volatilities  and  correlations  between 
products derived from historical price relationships.

The  Corporation  also  has  various  commodity  contracts  with  terms  that  extend  beyond  a  liquid  trading  period.  As 
forward market prices are not available for the full period of these contracts, the value of these contracts is derived by 
reference  to  a  forecast  that  is  based  on  a  combination  of  external  and  internal  fundamental  modelling,  including 
discounting. As a result, these contracts are classified in Level III.

The  Corporation  has  a  Commodity  Exposure  Management  Policy  that  governs  both  the  commodity  transactions 
undertaken  in  its  proprietary  trading  business  and  those  undertaken  to  manage  commodity  price  exposures  in  its 

F54

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TRANSALTA CORPORATION F54

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

generation  business.  This  Policy  defines  and  specifies  the  controls  and  management  responsibilities  associated  with 
commodity trading activities, as well as the nature and frequency of required reporting of such activities. 

Methodologies  and  procedures  regarding  commodity  risk  management  Level  III  fair  value  measurements  are 
determined by the Corporation’s risk management department. Level III fair values are primarily calculated within the 
Corporation’s energy trading risk management system. These calculations are based on underlying contractual data as 
well as observable and non-observable inputs. Development of non-observable inputs requires the use of judgment. To 
ensure  reasonability,  system-generated  Level  III  fair  value  measurements  are  reviewed  and  validated  by  the  risk 
management and finance departments. Review occurs formally on a quarterly basis or more frequently if daily review 
and monitoring procedures identify unexpected changes to fair value or changes to key parameters.

Information  on  risk  management  contracts  or  groups  of  risk  management  contracts  that  are  included  in  Level  III 
measurements and the related unobservable inputs and sensitivities, is as follows, and excludes the effects on fair value 
of certain unobservable inputs such as liquidity and credit discount (described as “base fair values”), as well as inception 
gains  or  losses.  Sensitivity  ranges  for  the  base  fair  values  are  determined  using  reasonably  possible  alternative 
assumptions for the key unobservable inputs, which may include forward commodity prices, commodity volatilities and 
correlations, delivery volumes and shapes.

As at

Dec. 31, 2020

Description

Base fair 

value Sensitivity

Valuation 
technique

Unobservable input

Range

Description

Base fair 

value Sensitivity

Valuation 
technique

Unobservable input

Range

Reasonable possible 
change

Long-term power 
sale – US

598

Coal 
transportation – 
US

Full requirements 
– Eastern US

Long-term wind 
energy sale –
Eastern US

Others

As at

(16)

11

(29)

(4) 

+35

-59

+3

-5

+3

-3

+22

-22

+5

-5

Long-term power 
sale – US

737 

Structured 
products – 
Eastern US

Full requirements 
–Eastern US

Long-term wind 
energy sale – 
Eastern US

Others

7 

10 

(28) 

(6) 

+46

-139

+2

-2
+3
-3

+20

-20

+8

-8

Long-term price 
forecast

Illiquid future power 
prices (per MWh)

US$24 to  US$32

Illiquid future power 
prices (per MWh)

US$24 to US$32

Volatility

15% to 40%

80% to 120%

Rail rate escalation

US$21 to US$24

zero to 4%

Numerical 
derivative 
valuation

Historical 
bootstrap

Volume

Cost of supply

Reasonable 
possible change

Price decrease of 
US$3 or price 
increase of US$5 

Price decrease of 
US$3 or price 
increase of US$5 

95%  to 105%

(+/-) US$1 per MWh

Price increase or 
decrease of US$6

Price increase or 
decrease of US$1

Illiquid future power 
prices (per MWh)

US$35 to US$52 

Long-term price 
forecast

Illiquid future REC 
prices (per unit)

US$11

Dec. 31, 2019

Long-term price 
forecast

Illiquid future power 
prices (per MWh)

US$20 to US$28 

Price decrease of 
US$3 or a price 
increase of US$9 

Option valuation 
techniques, 
historical 
bootstrap and 
historical price 
regression 
analysis

Historical 
bootstrap

Basis relationship

91% to 112%

4% to 6%

Non-standard shape 
factors
Volume
Cost of supply

Illiquid future power 
prices (per MWh)

63% to 116%

US$38 to US$60

4% to 10%
95% to 105%
(+/-) US$1 per MWh

Price increase or 
decrease of US$6

Price increase or 
decrease of US$1

Long-term price 
forecast

Illiquid future REC 
prices (per unit)

US$9

TransAlta Corporation    |    2020  Annual Integrated Report

F55

TRANSALTA CORPORATION F55

 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

i. Long-Term Power Sale – US
The Corporation has a long-term fixed price power sale contract in the US for delivery of power at the following capacity 
levels: 380 MW through Dec. 31, 2024, and 300 MW through Dec. 31, 2025. The contract is designated as an all-in-one 
cash flow hedge.

For  periods  beyond  2022,  market  forward  power  prices  are  not  readily  observable.  For  these  periods,  fundamental-
based  forecasts  and  market  indications  have  been  used  to  determine  proxies  for  base,  high  and  low  power  price 
scenarios.  The  base  price  forecast  has  been  developed  by  using  a  fundamental-based  forecast  (the  provider  is  an 
independent and widely accepted industry expert for scenario and planning views). Prior to the second quarter of 2018, 
the base price forecast was developed using an additional independent industry forecast. 

The contract is denominated in US dollars. With the weakening of the US dollar relative to the Canadian dollar from Dec. 
31, 2019, to Dec. 31, 2020, the base fair value and the sensitivity values have decreased by approximately $14 million 
and $1 million, respectively. 

ii. Structured Products – Eastern US
The Corporation has structured fixed priced power in the eastern United States. Under these contracts, the Corporation 
has  agreed  to  buy  or  sell  power  at  non-liquid  locations  or  during  non-standard  hours.  As  at  Dec.  31,  2020,  the 
Corporation did not have any material open positions on structured fixed priced power contracts.

The key unobservable inputs in the valuation of the fixed priced power contracts are market forward spreads and non-
standard shape factors. A historical regression analysis has been performed to model the spreads between non-liquid 
and liquid hubs. The non-standard shape factors have been determined using the historical data. 

iii. Coal Transportation - US
The Corporation has a coal rail transport agreement that includes an upside sharing mechanism, with a contract start 
date  of  Jan.  1,  2021,  and  extending  until  Dec.  31,  2025.  Option  pricing  techniques  have  been  utilized  to  value  the 
obligation associated with this component of the deal.

The  key  unobservable  inputs  used  in  the  valuation  include  non-liquid  power  prices,  option  volatility  and  rail  rate 
escalation. Reasonably possible alternative inputs were used to determine sensitivity on the fair value measurements.  

For  periods  beyond  2022,  market  forward  power  prices  are  not  readily  observable.  For  these  periods,  fundamental-
based  forecasts  and  market  indications  have  been  used  to  determine  proxies  for  base,  high  and  low  power  price 
scenarios.  The  base  price  forecast  has  been  developed  by  using  a  fundamental-based  forecast  (the  provider  is  an 
independent  and  widely  accepted  industry  expert  for  scenario  and  planning  views).  Option  volatility  and  rail  rate 
escalation ranges have been determined based on historical data and professional judgement.

iv. Full Requirements – Eastern US
The Corporation has a portfolio of full requirement service contracts, whereby the Corporation agrees to supply specific 
utility  customer  needs  for  a  range  of  products  that  may  include  electrical  energy,  capacity,  transmission,  ancillary 
services, renewable energy credits and independent system operator costs.  

The key unobservable inputs used in the portfolio valuation include delivered volume and supply cost.  Hourly shaping of 
consumption will result in a realized cost that may be at a premium (or discount) relative to the average settled price.  
Reasonable possible alternative inputs are used to determine sensitivity on the fair value measurement.  

v. Long-Term Wind Energy Sale – Eastern US
In relation to the Big Level, the Corporation has a long-term contract for differences whereby the Corporation receives 
a fixed price per MWh and pays the prevailing real-time energy market price per MWh as well as the physical delivery of 
renewable  energy  credits  ("RECs")  based  on  proxy  generation.  Commercial  operation  of  the  facility  was  achieved  in 
December  2019,  with  the  contract  commencing  on  July  1,  2019,  and  extending  for  15  years  after  the  commercial 
operation date. The contract is accounted for at fair value through profit or loss.

The  key  unobservable  inputs  used  in  the  valuation  of  the  contract  are  expected  proxy  generation  volumes  and  non-
liquid forward prices for power and RECs.  

F56

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F56

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

II. Commodity Risk Management Assets and Liabilities
Commodity  risk  management  assets  and  liabilities  include  risk  management  assets  and  liabilities  that  are  used  in  the 
energy  marketing  and  generation  businesses  in  relation  to  trading  activities  and  certain  contracting  activities.  To  the 
extent  applicable,  changes  in  net  risk  management  assets  and  liabilities  for  non-hedge  positions  are  reflected  within 
earnings of these businesses.

Commodity risk management assets and liabilities classified by fair value levels as at Dec. 31, 2020, are as follows: Level 
I — $13 million net liability (Dec. 31, 2019 — $3 million net liability), Level II — $27 million net liability (Dec. 31, 2019 — $9 
million net asset) and Level III — $582 million net asset (Dec. 31, 2019 — $686 million net asset). 

Significant  changes  in  commodity  net  risk  management  assets  (liabilities)  during  the  year  ended  Dec.  31,  2020,  are 
primarily  attributable  to  contract  settlements,  unfavourable  changes  in  market  prices  and  unfavourable  changes  in 
foreign exchange rates. 

The  following  tables  summarize  the  key  factors  impacting  the  fair  value  of  the  Level  III  commodity  risk  management 
assets and liabilities by classification level during the years ended Dec. 31, 2020 and 2019, respectively:

Year ended Dec. 31, 2020

Year ended Dec. 31, 2019

 Opening balance

 Changes attributable to:

   Market price changes on existing contracts

   Market price changes on new contracts

   Contracts settled

   Change in foreign exchange rates

  Transfers into (out of) Level III

 Net risk management assets at end of period

 Additional Level III information:

   Gains (losses) recognized in other comprehensive 
      income

  Total gains included in earnings before income taxes   

  Unrealized gains included in earnings before income
     taxes relating to net assets held at period end 

Hedge Non-hedge

678 

(18)   

— 

(71)   

(16)   

— 

573 

(34)   

71 

— 

8 

3 

7 

(10)   

1 

— 

9 

— 

11 

1 

Total

686 

(15) 

7 

(81) 

(15) 

— 

582 

(34) 

82 

1 

Hedge Non-hedge

689 

77 

— 

(57)   

(31)   

— 

678 

46 

57 

— 

6 

8 

14 

(19)   

(1)   

— 

8 

— 

21 

2 

Total

695 

85 

14 

(76) 

(32) 

— 

686 

46 

78 

2 

III. Other Risk Management Assets and Liabilities
Other  risk  management  assets  and  liabilities  primarily  include  risk  management  assets  and  liabilities  that  are  used  in 
managing  exposures  on  non-energy  marketing  transactions  such  as  interest  rates,  the  net  investment  in  foreign 
operations and other foreign currency risks. Hedge accounting is not always applied. 

Other risk management assets and liabilities with a total net liability fair value of $12 million as at Dec. 31, 2020 (Dec. 
31, 2019 – $4 million net asset) are classified as Level II fair value measurements. The significant changes in other net 
risk  management  assets  and  liabilities  during  the  year  ended  Dec.  31,  2020,  are  primarily  attributable  to  favorable 
market prices on existing contracts. 

IV. Other Financial Assets and Liabilities
The fair value of financial assets and liabilities measured at other than fair value is as follows:

Exchangeables securities – Dec. 31, 2020

Long-term debt – Dec. 31, 2020

Exchangeable securities – Dec. 31, 2019

Long-term debt – Dec. 31, 2019

(1) Includes current portion.

Fair value(1)

Level I

Level II

Level III

Total

— 

— 

— 

— 

769 

3,480 

342 

3,157 

— 

— 

— 

— 

769 

3,480 

342 

3,157 

Total
carrying
value(1)

730 

3,227 

326 

3,070 

TransAlta Corporation    |    2020  Annual Integrated Report

F57

TRANSALTA CORPORATION F57

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The fair values of the Corporation’s debentures, senior notes and exchangeable securities are determined using prices 
observed  in  secondary  markets.  Non-recourse  and  other  long-term  debt  fair  values  are  determined  by  calculating  an 
implied price based on a current assessment of the yield to maturity. 

The carrying amount of other short-term financial assets and liabilities (cash and cash equivalents, restricted cash, trade 
accounts receivable, collateral paid, accounts payable and accrued liabilities, collateral received and dividends payable) 
approximates fair value due to the liquid nature of the asset or liability. The fair values of the loan receivable (see Note 
22) and the finance lease receivables (see Note 8) approximate the carrying amounts.

The  majority  of  derivatives  traded  by  the  Corporation  are  based  on  adjusted  quoted  prices  on  an  active  exchange  or 
extend beyond the time period for which exchange-based quotes are available. The fair values of these derivatives are 
C. Inception Gains and Losses
determined using inputs that are not readily observable. Refer to section B of this Note 15 above for fair value Level III 
valuation techniques used. In some instances, a difference may arise between the fair value of a financial instrument at 
initial recognition (the “transaction price”) and the amount calculated through a valuation model. This unrealized gain or 
loss  at  inception  is  recognized  in  net  earnings  (loss)  only  if  the  fair  value  of  the  instrument  is  evidenced  by  a  quoted 
market price in an active market, observable current market transactions that are substantially the same, or a valuation 
technique  that  uses  observable  market  inputs.  Where  these  criteria  are  not  met,  the  difference  is  deferred  on  the 
Consolidated Statements of Financial Position in risk management assets or liabilities, and is recognized in net earnings 
(loss) over the term of the related contract. The difference between the transaction price and the fair value determined 
using a valuation model, yet to be recognized in net earnings, and a reconciliation of changes is as follows:

As at Dec. 31

Unamortized net gain at beginning of year
New inception gains (losses)(1)
Change in foreign exchange rates

Amortization recorded in net earnings during the year
Unamortized net gain (loss) at end of year(2)

2020

2019

2018

9 

(13)   

— 

(29)   

(33)   

49 

3 

— 

(43)   

9 

105 

(14) 

5 

(47) 

49 

(1) During 2020, the Corporation entered into a coal rail transportation agreement that includes an upside sharing mechanism. Option pricing techniques have been 
utilized to value the obligation associated with this component of the deal.
(2) During 2020, the net  inception gain on the long-term fixed price power sale contract in the US changed to a loss position based on the day 1 forward price curve  
at inception of the contract.

The  Corporation  is  exposed  to  market  risk  from  changes  in  commodity  prices,  foreign  exchange  rates,  interest  rates, 
16. Risk Management Activities
credit  risk  and  liquidity  risk.  These  risks  affect  the  Corporation’s  earnings  and  the  value  of  associated  financial 
A. Risk Management Strategy
instruments that the Corporation holds. In certain cases, the Corporation seeks to minimize the effects of these risks by 
using  derivatives  to  hedge  its  risk  exposures.  The  Corporation’s  risk  management  strategy,  policies  and  controls  are 
designed to ensure that the risks it assumes comply with the Corporation’s internal objectives and its risk tolerance.

The  Corporation  has  two  primary  streams  of  risk  management  activities:  i)  financial  exposure  management  and  ii) 
commodity  exposure  management.  Within  these  activities,  risks  identified  for  management  include  commodity  risk, 
interest rate risk, liquidity risk, equity price risk and foreign currency risk.

The Corporation seeks to minimize the effects of commodity risk, interest rate risk and foreign currency risk by using 
derivative  financial  instruments  to  hedge  risk  exposures.  Of  these  derivatives,  the  Corporation  may  apply  hedge 
accounting to those hedging commodity price risk and foreign currency risk.

The use of financial derivatives is governed by the Corporation’s policies approved by the Board, which provide written 
principles on commodity risk, interest rate risk, liquidity risk, equity price risk and foreign currency risk, as well as the 
use of financial derivatives and non-derivative financial instruments. 

Liquidity risk, credit risk and equity price risk are managed through means other than derivatives or hedge accounting.

The Corporation enters into various derivative transactions as well as other contracting activities that do not qualify for 
hedge  accounting  or  where  a  choice  was  made  not  to  apply  hedge  accounting.  As  a  result,  the  related  assets  and 

F58

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F58

 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

liabilities are classified as derivatives at fair value through profit and loss. The net realized and unrealized gains or losses 
from changes in the fair value of these derivatives are reported in net earnings in the period the change occurs.

The Corporation designates certain derivatives as hedging instruments to hedge commodity price risk, foreign currency 
exchange risk in cash flow hedges, and hedges of net investments in foreign operations. Hedges of foreign exchange risk 
on firm commitments are accounted for as cash flow hedges.

At the inception of the hedge relationship, the Corporation documents the relationship between the hedging instrument 
and  the  hedged  item,  along  with  its  risk  management  objectives  and  its  strategy  for  undertaking  various  hedge 
transactions.  At  the  inception  of  the  hedge  and  on  an  ongoing  basis,  the  Corporation  also  documents  whether  the 
hedging instrument is effective in offsetting changes in fair values or cash flows of the hedged item attributable to the 
hedged risk, which is when the hedging relationships meet all of the following hedge effectiveness requirements:

▪
▪
▪

There is an economic relationship between the hedged item and the hedging instrument;
The effect of credit risk does not dominate the value changes that result from that economic relationship; and
The hedge ratio of the hedging relationship is the same as that resulting from the quantity of the hedged item 
that the Corporation actually hedges and the quantity of the hedging instrument that the entity actually uses 
to hedge that quantity of hedged item.

If  a  hedging  relationship  ceases  to  meet  the  hedge  effectiveness  requirement  relating  to  the  hedge  ratio,  but  the  risk 
management  objective  for  that  designated  hedging  relationship  remains  the  same,  the  Corporation  adjusts  the  hedge 
ratio of the hedging relationship so that it continues to meet the qualifying criteria.

Aggregate net risk management assets and (liabilities) are as follows: 
B. Net Risk Management Assets and Liabilities
As at Dec. 31, 2020

Commodity risk management

Current

Long-term

Net commodity risk management assets (liabilities)

Other

Current

Long-term

Net other risk management liabilities

Cash flow
hedges

Not
designated
as a hedge

101 

471 

572 

(9)   

— 

(9)   

(11)   

(19)   

(30)   

(4)   

1 

(3)   

Total

90 

452 

542 

(13) 

1 

(12) 

Total net risk management assets (liabilities)

563 

(33)   

530 

As at Dec. 31, 2019

Commodity risk management

Current

Long-term

Net commodity risk management assets

Other

Current

Long-term

Net other risk management assets

Total net risk management assets

Cash flow
hedges

Not
designated
as a hedge

70 

606 

676 

— 

— 

— 

676 

15 

1 

16 

— 

4 

4 

20 

Total

85 

607 

692 

— 

4 

4 

696 

TransAlta Corporation    |    2020  Annual Integrated Report

F59

TRANSALTA CORPORATION F59

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

I. Netting Arrangements
Information about the Corporation’s financial assets and liabilities that are subject to enforceable master netting 
arrangements or similar agreements is as follows:

As at Dec. 31

2020

2019

Gross amounts recognized

Gross amounts set-off

Net amounts as included in the 
  Consolidated Statements of 
  Financial Position

Current
financial
assets

Long-term
financial
assets

Current
financial
liabilities

Long-term
financial
liabilities

Current
financial
assets

Long-term
financial
assets

Current
financial
liabilities

Long-term
financial
liabilities

120 

(69)   

69 

(10)   

(132)   

(104)   

316 

631 

(191)   

69 

10 

(140)   

(42)   

140 

(100) 

42 

51 

59 

(63)   

(94)   

176 

589 

(51)   

(58) 

I. Market Risk
C. Nature and Extent of Risks Arising from Financial Instruments
a. Commodity Price Risk Management
The  Corporation  has  exposure  to  movements  in  certain  commodity  prices  in  both  its  electricity  generation  and 
proprietary trading businesses, including  the  market  price  of electricity and fuels used to produce electricity. Most of 
the Corporation’s electricity generation and related fuel supply contracts are considered to be contracts for delivery or 
receipt  of  a  non-financial  item  in  accordance  with  the  Corporation’s  expected  own  use  requirements  and  are  not 
considered  to  be  financial  instruments.  As  such,  the  discussion  related  to  commodity  price  risk  is  limited  to  the 
Corporation’s proprietary trading business and commodity derivatives used in hedging relationships associated with the 
Corporation’s electricity generating activities.

To mitigate the risk of adverse commodity price changes, the Corporation uses three tools:

▪
▪

▪

A framework of risk controls;
A  pre-defined  hedging  plan,  including  fixed  price  financial  power  swaps  and  long-term  physical  power  sale 
contracts to hedge commodity price for electricity generation; and
A committee dedicated to overseeing the risk and compliance program in trading and ensuring the existence of 
appropriate controls, processes, systems and procedures to monitor adherence to the program.

The Corporation has executed commodity price hedges for its Centralia thermal facility and for its portfolio of merchant 
power  exposure  in  Alberta,  including  a  long-term  physical  power  sale  contract  at  Centralia  and  fixed  price  financial 
swaps  for  the  Alberta  portfolio  to  hedge  the  prices.  Both  hedging  strategies  fall  under  the  Corporation’s  risk 
management strategy used to hedge commodity price risk.

There is no source of hedge ineffectiveness for the merchant power exposure in Alberta.

Market risk exposures are measured using Value at Risk ("VaR") supplemented by sensitivity analysis. There has been no 
change to the Corporation’s exposure to market risks or the manner in which these risks are managed or measured.

i. Commodity Price Risk Management – Proprietary Trading
The Corporation’s Energy Marketing segment conducts proprietary trading activities and uses a variety of instruments 
to manage risk, earn trading revenue and gain market information.

In compliance with the Commodity Exposure Management Policy, proprietary trading activities are subject to limits and 
controls, including VaR limits. The Board approves the limit for total VaR from proprietary trading activities. VaR is the 
most  commonly  used  metric  employed  to  track  and  manage  the  market  risk  associated  with  trading  positions.  A  VaR 
measure gives, for a specific confidence level, an estimated maximum pre-tax loss that could be incurred over a specified 
period of time. VaR is used to determine the potential change in value of the Corporation’s proprietary trading portfolio, 
over  a  three-day  period  within  a  95  per  cent  confidence  level,  resulting  from  normal  market  fluctuations.  VaR  is 
estimated using the historical variance/covariance approach. VaR is a measure that has certain inherent limitations. The 
use of historical information in the estimate assumes that price movements in the past will be indicative of future market 
risk. As such, it may only be meaningful under normal market conditions. Extreme market events are not addressed by 
this  risk  measure.  In  addition,  the  use  of  a  three-day  measurement  period  implies  that  positions  can  be  unwound  or 
hedged within three days, although this may not be possible if the market becomes illiquid.

F60

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F60

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Changes in market prices associated with proprietary trading activities affect net earnings in the period that the price 
changes  occur.  VaR  at  Dec.  31,  2020,  associated  with  the  Corporation’s  proprietary  trading  activities  was $1  million 
(2019 — $1 million, 2018 — $2 million).

ii. Commodity Price Risk – Generation 
The  generation  segments  utilize  various  commodity  contracts  to  manage  the  commodity  price  risk  associated  with 
electricity  generation,  fuel  purchases,  emissions  and  byproducts,  as  considered  appropriate.  A  Commodity  Exposure 
Management Policy is prepared and approved annually, which outlines the intended hedging strategies associated with 
the Corporation’s generation assets and related commodity price risks. Controls also include restrictions on authorized 
instruments, management reviews on individual portfolios and approval of asset transactions that could add potential 
volatility to the Corporation’s reported net earnings.

TransAlta has entered into various contracts with other parties whereby the other parties have agreed to pay a fixed 
price for electricity to TransAlta. While not all of the contracts create an obligation for the physical delivery of electricity 
to other parties, the Corporation has the intention and believes it has sufficient electrical generation available to satisfy 
these contracts and, where able, has designated these as cash flow hedges for accounting purposes. As a result, changes 
in  market  prices  associated  with  these  cash  flow  hedges  do  not  affect  net  earnings  in  the  period  in  which  the  price 
change occurs. Instead, changes in fair value are deferred until settlement through AOCI, at which time the net gain or 
loss resulting from the combination of the hedging instrument and hedged item affects net earnings.

VaR at Dec. 31, 2020, associated with the Corporation’s commodity derivative instruments used in generation hedging 
activities was $12 million (2019 — $25 million, 2018 — $18 million). For positions and economic hedges that do not meet 
hedge  accounting  requirements  or  for  short-term  optimization  transactions  such  as  buybacks  entered  into  to  offset 
existing hedge positions, these transactions are marked to the market value with changes in market prices associated 
with  these  transactions  affecting  net  earnings  in  the  period  in  which  the  price  change  occurs.  VaR  at  Dec.  31,  2020, 
associated with these transactions was $15 million (2019— $8 million, 2018  — $13 million).

iii. Commodity Price Risk Management – Hedges
The Corporation’s outstanding commodity derivative instruments designated as hedging instruments are as follows:

As at Dec. 31

2020

2019

Type
(thousands)
Electricity (MWh)(1)
(1) Excludes the long-term power sale - US contract. For further details on this contract, refer to Note 15(B)(I)(c)(i).

95 

Notional
amount
sold

Notional
amount
purchased

Notional
amount
sold

Notional
amount
purchased

— 

222 

— 

During  2020,  unrealized  pre-tax  gains  of  $1  million  (2019  —  $1  million,  2018  —  $4  million)  related  to  certain  power 
hedging  relationships  that  were  previously  de-designated  and  deemed  ineffective  for  accounting  purposes  were 
released from AOCI and recognized in net earnings. 

iv. Commodity Price Risk Management – Non-Hedges
The Corporation’s outstanding commodity derivative instruments not designated as hedging instruments are as follows:

As at Dec. 31

Type
(thousands)

Electricity (MWh)
Natural gas (GJ)
Transmission (MWh)
Emissions (MWh)
Emissions (tonnes)

2020

2019

Notional
amount
sold

Notional
amount
purchased

12,944 

23,035 

— 

1,831 

2,160 

8,258 

177,448 

1,578 

2,112 

2,365 

Notional
amount
sold

16,097 

38,062 

— 

184 

2,436 

Notional
amount
purchased

7,204 

55,023 

1,818 

138 

2,446 

b. Interest Rate Risk Management 
Interest rate risk arises as the fair value of future cash flows from a financial instrument fluctuates because of changes in 
market  interest  rates.  Changes  in  interest  rates  can  impact  the  Corporation’s  borrowing  costs  and  the  capacity 
payments  received  under  the  Alberta  coal  PPAs.  Changes  in  the  cost  of  capital  may  also  affect  the  feasibility  of  new 
growth initiatives.

TransAlta Corporation    |    2020  Annual Integrated Report

F61

TRANSALTA CORPORATION F61

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The  Corporation's  credit  facility  and  the  Poplar  Creek  non-recourse  bond  are  the  only  debt  instruments  subject  to 
floating interest rates, which represent 7 per cent of the Corporation’s debt as at Dec. 31, 2020 (2019  –  11 per cent). 
Interest  rate  risk  is  managed  with  the  use  of  derivatives.  The  Corporation's  outstanding  interest  rate  derivative 
instruments are as follows.

At Dec. 31, 2020, the Corporation had interest rate swap agreements in place with a notional amount of US$150 million 
whereby the Corporation receives a variable rate of interest equal to the three-month LIBOR rate and pays interest at a 
fixed rate equal to 0.94 per cent on the notional amount. The swap is being used to hedge interest rate exposure on a 
highly probable future US$400 million fixed rate debt issuance.

At Dec. 31, 2020, the Corporation had a bond lock agreement in place with a notional amount of $75 million whereby on 
the pricing date, if the difference between the underlying 5.75 per cent Government of Canada bond and the forward 
bond  price  of  $150  million  (forward  yield  1.20  per  cent)  is  positive,  the  Corporation  receives  settlement.  If  the 
difference  is  negative,  the  Corporation  pays  settlement.  The  swap  is  being  used  to  hedge  interest  rate  exposure  on  a 
highly probable future $150 million fixed rate debt issuance.

There were no interest rate derivative instruments outstanding in 2019 or 2018.

IBOR reform could impact interest rate risk with respect to the Corporation's credit facilities and the Poplar Creek non-
recourse bond held by a TransAlta subsidiary. The facility references LIBOR for US dollar drawings and Canadian Dollar 
Offer  Rate  ("CDOR")  for  Canadian  dollar  drawings:  in  addition  the  non-recourse  bond  references  the  three  month 
CDOR. To date, no US dollar drawings have been made on the facility and there is currently a plan to discontinue the six- 
twelve month CDOR, which does not impact the facility or the non-recourse bond. 

Outstanding forward starting interest rate swaps in both Canadian and US dollars should not be affected as they are set 
to settle in 2021 prior to any IBOR changes being made. The Corporation is monitoring the reform and does not expect 
any material impacts.

c. Currency Rate Risk 
The  Corporation  has  exposure  to  various  currencies,  such  as  the  US  dollar  and  the  Australian  dollar,  as  a  result  of 
investments  and  operations  in  foreign  jurisdictions,  the  net  earnings  from  those  operations  and  the  acquisition  of 
equipment and services from foreign suppliers.

The Corporation may enter into the following hedging strategies to mitigate currency rate risk, including:

▪

▪

▪

Foreign exchange forward contracts to mitigate adverse changes in foreign exchange rates on project-related 
expenditures and distributions received in foreign currencies;
Foreign  exchange  forward  contracts  and  cross-currency  swaps  to  manage  foreign  exchange  exposure  on 
foreign-denominated debt not designated as a net investment hedge; and
Designating foreign currency debt as a hedge of the net investment in foreign operations to mitigate the risk 
due to fluctuating exchange rates related to certain foreign subsidiaries.

The  Corporation's  target  is  to  hedge  a  minimum  of 60  per  cent  of  our  forecasted  foreign  operating  cash  flows  over  a 
four-year period, with a minimum of 90 per cent in the current year, 70 per cent in the next year, 50 per cent in the third 
year and 30 per cent in the fourth year. The US exposure will be managed with a combination of interest expense on our 
US-denominated  debt  and  forward  foreign  exchange  contracts  and  the  Australian  exposure  will  be  managed  with  a 
combination of interest expense on our Australian-dollar denominated debt and forward foreign exchange contracts.

i. Net Investment Hedges
When  designating  foreign  currency  debt  as  a  hedge  of  the  Corporation’s  net  investment  in  foreign  subsidiaries,  the 
Corporation has determined that the hedge is effective if the foreign currency of the net investment is the same as the 
currency of the hedge, and therefore an economic relationship is present. 

The Corporation’s hedges of its net investment in foreign operations were comprised of US-dollar-denominated long-
term debt with a face value of US$370 million (2019 — US$370 million). 

ii. Cash Flow Hedges
The Corporation uses foreign exchange forward contracts to hedge a portion of its future foreign-denominated receipts
and expenditures, and both foreign exchange forward contracts and cross-currency swaps to manage foreign exchange
exposure on foreign-denominated debt not designated as a net investment hedge. 

F62

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F62

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

As at Dec. 31

Notional
amount
sold

Notional
amount
purchased

2020

Fair value
liability

Maturity

Notional
amount
sold

Notional
amount
purchased

Fair value
asset

Maturity

2019

Foreign Exchange Forward Contracts - foreign-denominated receipts/expenditures

CAD71 

USD54 

(2)   

2021 

CAD124 

USD95 

— 

2020-2021

iii. Non-Hedges
As  part  of  the  sale  of  the  Corporation's  economic  interest  in  the  Australian  Assets  to  TransAlta  Renewables,  the 
Corporation  agreed  to  mitigate  the  risks  to  TransAlta  Renewables'  shareholders  of  adverse  changes  in  the  US  and 
Australian in respect of cash flows from the Australian Assets in relation to the Canadian dollar to June 30, 2020. The 
financial effects of the agreements eliminate on consolidation.

In  order  to  mitigate  some  of  the  risk  that  is  attributable  to  non-controlling  interests,  the  Corporation  entered  into 
foreign currency contracts with third parties to the extent of the non-controlling interest percentage of the expected 
cash flow over five years to June 30, 2020. Hedge accounting was not applied to these foreign currency contracts. 

The  Corporation  also  uses  foreign  currency  contracts  to  manage  its  expected  foreign  operating  cash  flows.  Hedge 
accounting is not applied to these foreign currency contracts. 

As at Dec. 31

Notional
amount
sold

Notional
amount
purchased

2020

Fair value
asset
(liability)

Maturity

Notional
amount
sold

Notional
amount
purchased

Fair value
asset
(liability)

Maturity

2019

Foreign exchange forward contracts – foreign-denominated receipts/expenditures

AUD197 

USD47 

AUD4 

CAD1 

CAD181 

CAD72 

USD3 

EUR1 

(14) 

2021-2024  

AUD286 

9 

— 

— 

2021-2024  

USD108 

2021

2021

Foreign exchange forward contracts – foreign-denominated debt

CAD266 

CAD139 

— 

(4) 

2020 - 2023

2020 - 2023

CAD191 

USD150 

2 

2022 

CAD191 

USD150 

6 

2022

iv. Impacts of currency rate risk
The  possible  effect  on  net  earnings  and  OCI,  due  to  changes  in  foreign  exchange  rates  associated  with  financial 
instruments  denominated  in  currencies  other  than  the  Corporation’s  functional  currency,  is  outlined  below.  The 
sensitivity analysis has been prepared using management’s assessment that an average three cent (2019 — three cent, 
2018  —  four  cent)  increase  or  decrease  in  these  currencies  relative  to  the  Canadian  dollar  is  a  reasonable  potential 
change over the next quarter.

Year ended Dec. 31

2020

2019

2018

Currency

USD

AUD

Total

Net earnings
increase

(decrease)(1) OCI gain(1),(2)

Net earnings

increase(1) OCI gain(1),(2)

Net earnings

decrease(1) OCI gain(1),(2)

(8)   

(4)   

(12)   

1 

— 

1 

(18)   

(6)   

(24)   

2 

— 

2 

(13)   

(7)   

(20)   

— 

— 

— 

(1) These calculations assume an increase in the value of these currencies relative to the Canadian dollar.  A decrease would have the opposite effect.
(2) The foreign exchange impact related to financial instruments designated as hedging instruments in net investment hedges has been excluded.

TransAlta Corporation    |    2020  Annual Integrated Report

F63

TRANSALTA CORPORATION F63

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

II. Credit Risk
Credit  risk  is  the  risk  that  customers  or  counterparties  will  cause  a  financial  loss  for  the  Corporation  by  failing  to 
discharge their obligations, and the risk to the Corporation associated with changes in creditworthiness of entities with 
which commercial exposures exist. The Corporation actively manages its exposure to credit risk by assessing the ability 
of  counterparties  to  fulfil  their  obligations  under  the  related  contracts  prior  to  entering  into  such  contracts.  The 
Corporation  makes  detailed  assessments  of  the  credit  quality  of  all  counterparties  and,  where  appropriate,  obtains 
corporate  guarantees,  cash  collateral,  third-party  credit  insurance  and/or  letters  of  credit  to  support  the  ultimate 
collection of these receivables. For commodity trading and origination, the Corporation sets strict credit limits for each 
counterparty and monitors exposures on a daily basis. TransAlta uses standard agreements that allow for the netting of 
exposures  and  often  include  margining  provisions.  If  credit  limits  are  exceeded,  TransAlta  will  request  collateral  from 
the counterparty or halt trading activities with the counterparty. 

The Corporation uses external credit ratings, as well as internal ratings in circumstances where external ratings are not 
available,  to  establish  credit  limits  for  customers  and  counterparties.  The  following  table  outlines  the  Corporation’s 
maximum exposure to credit risk without taking into account collateral held, including the distribution of credit ratings, 
as at Dec. 31, 2020:

Trade and other receivables(1)
Long-term finance lease receivable
Risk management assets(1)
Loan receivable(2)

Total

Investment 
grade
 (Per cent)
 92 

Non-
investment 
grade
 (Per cent)
 8 

 100 

 93 

 — 

 — 

 7 

 100 

Total
 (Per cent)
 100 

 100 

 100 

 100 

Total
amount

583 

228 

692 

52 

1,555 

(1) Letters of credit and cash and cash equivalents are the primary types of collateral held as security related to these amounts. 
(2) The counterparty has no external credit rating. Refer to Note 22 for further details.  

An impairment analysis is performed at each reporting date using a provision matrix to measure expected credit losses. 
The  provision  rates  are  based  on  segment  historical  rates  of  default  of  trade  receivables  as  well  as  incorporating 
forward-looking  credit  ratings  and  forecasted  default  rates.  In  addition  to  the  calculation  of  expected  credit  losses, 
TransAlta  monitors  key  forward-looking  information  as  potential  indicators  that  historical  bad  debt  percentages, 
forward-looking S&P credit ratings and forecasted default rates would no longer be representative of future expected 
credit  losses.  The  calculation  reflects  the  probability-weighted  outcome,  the  time  value  of  money  and  reasonable  and 
supportable  information  that  is  available  at  the  reporting  date  about  past  events,  current  conditions  and  forecasts  of 
future economic conditions. TransAlta evaluates the concentration of risk with respect to trade receivables as low, as its 
customers are located in several jurisdictions and industries. The Corporation did not have significant expected credit 
losses as at Dec. 31, 2020.

The Corporation’s maximum exposure to credit risk at Dec. 31, 2020, without taking into account collateral held or right 
of  set-off,  is  represented  by  the  current  carrying  amounts  of  receivables  and  risk  management  assets  as  per  the 
Consolidated  Statements  of  Financial  Position.  Letters  of  credit  and  cash  are  the  primary  types  of  collateral  held  as 
security  related  to  these  amounts.  The  maximum  credit  exposure  to  any  one  customer  for  commodity  trading 
operations  and  hedging,  including  the  fair  value  of  open  trading,  net  of  any  collateral  held,  at Dec.  31,  2020,  was  $22 
million (2019 — $5 million).

Amidst  the  current  economic  conditions  resulting  from  the  COVID-19  pandemic,  TransAlta  has  implemented  the 
following additional measures to monitor its counterparties for changes in their ability to meet obligations: 
▪
▪ Weekly oversight and follow-up, if applicable, of accounts receivables; and 
▪

Daily monitoring of events impacting counterparty creditworthiness and counterparty credit downgrades; 

Review and monitoring of key suppliers, counterparties and customers (i.e., off-takers).

As needed, additional risk mitigation tactics will be taken to reduce the risk to TransAlta. These risk mitigation tactics 
may  include,  but  are  not  limited  to,  immediate  follow-up  on  overdue  amounts,  adjusting  payment  terms  to  ensure  a 
portion  of  funds  are  received  sooner,  requiring  additional  collateral,  reducing  transaction  terms  and  working  closely 
with impacted counterparties on negotiated solutions.

F64

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F64

 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

III. Liquidity Risk
Liquidity  risk  relates  to  the  Corporation’s  ability  to  access  capital  to  be  used  for  proprietary  trading  activities, 
commodity hedging, capital projects, debt refinancing and general corporate purposes. As at Dec. 31, 2020, TransAlta 
maintains an investment grade rating from one credit rating agency and below investment grade ratings from two credit 
rating agencies. Between 2021 and 2023, the Corporation has approximately $1 billion of debt maturing, comprised of 
approximately  $631  million  of  recourse  debt,  with  the  balance  mainly  related  to  scheduled  non-recourse  debt 
repayments. We expect to refinance the debt maturing in 2022. 

Collateral  is  posted  based  on  negotiated  terms  with  counterparties,  which  can  include  the  Corporation’s  senior 
unsecured credit rating as determined by certain major credit rating agencies. Certain of the Corporation’s derivative 
instruments contain financial assurance provisions that require collateral to be posted only if a material adverse credit-
related event occurs. 

TransAlta  manages  liquidity  risk  by  monitoring  liquidity  on  trading  positions;  preparing  and  revising  longer-term 
financing  plans  to  reflect  changes  in  business  plans  and  the  market  availability  of  capital;  reporting  liquidity  risk 
exposure for proprietary trading activities on a regular basis to the Risk Management Committee, senior management 
and the Board; and maintaining sufficient undrawn committed credit lines to support potential liquidity requirements. 
The Corporation does not use derivatives or hedge accounting to manage liquidity risk.

A maturity analysis of the Corporation's financial liabilities is as follows:

Accounts payable and accrued liabilities
Long-term debt(1)
Exchangeable securities(2)
Commodity risk management (assets)
   liabilities

Other risk management (assets) liabilities
Lease liabilities(3)
Interest on long-term debt and lease 
  liabilities(4)
Interest on exchangeable securities(2, 4)
Dividends payable

Total

2021

599 

96 

— 

(92)   

14 

(5)   

161 

53 

59 

885 

2022

2023

2024

2025

— 

626 

— 

— 

277 

— 

— 

119 

— 

— 

136 

750 

(87)   

(131)   

(131)   

(103)   

— 

6 

153 

52 

— 

750 

1 

5 

126 

53 

— 

331 

(2)   

5 

119 

52 

— 

162 

— 

5 

113 

— 

— 

2026 and 
thereafter

— 

2,010 

— 

2 

(1)   

118 

Total

599 

3,264 

750 

(542) 

12 

134 

893 

1,565 

— 

— 

210 

59 

901 

3,022 

6,051 

(1) Excludes impact of hedge accounting and derivatives.
(2) Assumes the exchangeable securities will be exchanged on Jan. 1, 2025. Refer to Note 25 for further details. 
(3) Lease liabilities include a lease incentive of $13 million, expected to be received in 2021.
(4) Not recognized as a financial liability on the Consolidated Statements of Financial Position.

IV. Equity Price Risk
a. Total Return Swaps 
The Corporation has certain compensation, deferred and restricted share unit programs, the values of which depend on 
the  common  share  price  of  the  Corporation.  The  Corporation  has  fixed  a  portion  of  the  settlement  cost  of  these 
programs by entering into a total return swap for which hedge accounting has not been applied. The total return swap is 
cash settled every quarter based upon the difference between the fixed price and the market price of the Corporation’s 
common shares at the end of each quarter.

TransAlta Corporation    |    2020  Annual Integrated Report

F65

TRANSALTA CORPORATION F65

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

D. Hedging Instruments – Uncertainty of Future Cash Flows
The following table outlines the terms and conditions of derivative hedging instruments and how they affect the amount, 
timing and uncertainty of future cash flows:

Maturity

2021

2022

2023

2024

2025

2026 and 
thereafter

Cash flow hedges(1)

Foreign currency forward contracts

        Notional amount ($ millions)

                 CAD/USD

        Average Exchange Rate

                 CAD/USD

Commodity derivative instruments

   Electricity

        Notional amount (thousands MWh)

        Average Price ($ per MWh)

(1) The interest rate swaps detailed above both settle in 2021.

54 

0.7648 

— 

— 

— 

— 

— 

— 

— 

— 

3,424 

69.51 

3,329 

71.91 

3,329 

73.72 

3,338 

75.56 

2,628 

77.44 

— 

— 

— 

— 

I. Effect of Hedges
E. Effects of Hedge Accounting on the Financial Position and Performance
The impact of the hedging instruments on the statement of financial position is as follows:

As at Dec. 31, 2020

Commodity price risk

Cash flow hedges

Physical power sales

Interest rate risk

Cash flow hedges

Interest rate swap

Interest rate swap

Foreign currency risk

Net investment hedges

Notional 
amount

Carrying 
amount

Line item in the statement 
of financial position

Change in fair 
value used for 
measuring 
ineffectiveness

16 MMWh  

573 

Risk management assets  

(33) 

USD150  

CAD75  

(3)  Risk management liabilities  

(4)  Risk management liabilities  

3 

4 

11 

Foreign-denominated debt

USD370

CAD472

Credit facilities, long-term 
debt and lease liabilities  

As at Dec. 31, 2019

Commodity price risk

Cash flow hedges

Physical power sales

Foreign currency risk

Net investment hedges

Foreign-denominated debt

Notional 
amount

Carrying 
amount

Line item in the statement 
of financial position

Change in fair 
value used for 
measuring 
ineffectiveness

19 MMWh  

678 

Risk management assets  

USD370

CAD483

Credit facilities, long-term 

debt and lease liabilities  

47 

21 

F66

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F66

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The impact of the hedged items on the statement of financial position is as follows:

As at Dec. 31

2020

2019

Change in fair value used for 
measuring ineffectiveness

Cash flow hedge 
reserve(1)

Change in fair value used for 
measuring ineffectiveness

Cash flow hedge 
reserve(1)

Commodity price risk

Cash flow hedges

Power forecast sales – Centralia

(33)   

417 

47 

527 

Interest rate risk

Cash flow hedges

Interest expense on long-term
   debt

Foreign currency risk

Net investment hedges

Net investment in foreign 
   subsidiaries

(1) Included in AOCI.

7

19  

— 

— 

Change in fair value used for 
measuring ineffectiveness

Foreign currency 
translation 
reserve(1)

Change in fair value used for 
measuring ineffectiveness

Foreign currency 
translation 
reserve(1)

11 

(21)   

21 

(21) 

The hedging gain recognized in OCI before tax is equal to the change in fair value used for measuring effectiveness for 
the net investment hedge. There is no ineffectiveness recognized in profit or loss.

The impact of hedged items designated in hedging relationships on OCI and net earnings is:

Year ended Dec. 31, 2020

Effective portion

Ineffective portion

Derivatives in cash
flow hedging
relationships

Commodity contracts

Foreign exchange forwards on 
project hedges

Forward starting interest rate 
swaps

OCI impact

Pre-tax
gain (loss)
recognized in 
OCI

Location of (gain) 
loss
reclassified
from OCI

Pre-
tax (gain) loss
reclassified
from OCI

Location of (gain) loss
reclassified
from OCI

Pre-tax
(gain) loss
recognized in
earnings

41  Revenue

Property, plant 
and equipment

(1) 

(137)  Revenue

Foreign exchange 
(gain) loss

— 

(12) 

Interest expense

(4) 

Interest expense

28  OCI impact

(141)  Net earnings impact

— 

— 

— 

— 

Over  the  next  12  months,  the  Corporation  estimates  that  approximately  $72  million  of  after-tax  gains  will  be 
reclassified from AOCI to net earnings. These estimates assume constant natural gas and power prices, interest rates 
and exchange rates over time; however, the actual amounts that will be reclassified may vary based on changes in these 
factors.

Year ended Dec. 31, 2019

Effective portion

Ineffective portion

Derivatives in cash
flow hedging
relationships

Commodity contracts

Forward starting interest rate 
swaps

OCI impact

Pre-tax
gain (loss)
recognized in 
OCI

Location of (gain) 
loss
reclassified
from OCI

Pre-tax
 (gain) loss
reclassified
from OCI

Location of (gain) loss
reclassified
from OCI

Pre-tax
(gain) loss
recognized in 
earnings

77  Revenue

(59)  Revenue

— 

Interest expense

6 

Interest expense

77  OCI impact

(53)  Net earnings impact

— 

— 

— 

TransAlta Corporation    |    2020  Annual Integrated Report

F67

TRANSALTA CORPORATION F67

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Year ended Dec. 31, 2018

Effective portion

Ineffective portion

Derivatives in cash
flow hedging
relationships

Commodity contracts

Foreign exchange forwards on 
US debt

Forward starting interest rate 
swaps

OCI impact

Pre-tax
gain (loss)
recognized 
in OCI

Location of (gain) loss 
reclassified from OCI

Pre-tax
(gain) loss
reclassified
from OCI

Location of (gain) loss
reclassified from OCI

Pre-tax
(gain) loss
recognized in
earnings

(9)  Revenue

Foreign exchange 
(gain) loss

— 

— 

Interest expense

(9)  OCI impact

(67)  Revenue

Foreign exchange 
(gain) loss

3 

7 

Interest expense

(57)  Net earnings impact

— 

— 

— 

— 

II. Effect of Non-Hedges
For the year ended Dec. 31, 2020, the Corporation recognized a net unrealized gain of $43 million (2019 — gain of $33 
million, 2018 — loss of $29 million) related to commodity derivatives.

For the year ended Dec. 31, 2020, a gain of $11 million (2019 — gain of $24 million, 2018 —gain of $3 million) related to 
foreign exchange and other derivatives was recognized, which is comprised of net unrealized loss of $2 million (2019 — 
gains of $6 million, 2018 — gains of $4 million) and net realized gains of $13 million (2019 — gains of $18 million, 2018 — 
losses of $1 million).

I. Financial Assets Provided as Collateral
F. Collateral
At Dec. 31, 2020, the Corporation provided $49 million (2019  – $42 million) in cash and cash equivalents as collateral to 
regulated clearing agents as security for commodity trading activities. These funds are held in segregated accounts by 
the clearing agents. Collateral provided is included in accounts receivable in the Consolidated Statements of Financial 
Position.

II. Financial Assets Held as Collateral 
At Dec. 31, 2020, the Corporation held nil (2019 – $3 million) in cash collateral associated with counterparty obligations. 
Under the terms of the contracts, the Corporation may be obligated to pay interest on the outstanding balances and to 
return  the  principal  when  the  counterparties  have  met  their  contractual  obligations  or  when  the  amount  of  the 
obligation  declines  as  a  result  of  changes  in  market  value.  Interest  payable  to  the  counterparties  on  the  collateral 
received  is  calculated  in  accordance  with  each  contract.  Collateral  held  is  included  in  accounts  payable  in  the 
Consolidated Statements of Financial Position.

III. Contingent Features in Derivative Instruments 
Collateral  is  posted  in  the  normal  course  of  business  based  on  the  Corporation’s  senior  unsecured  credit  rating  as 
determined by certain major credit rating agencies. Certain of the Corporation’s derivative instruments contain financial 
assurance provisions that require collateral to be posted only if a material adverse credit-related event occurs. 

As at Dec. 31, 2020, the Corporation had posted collateral of $163 million (Dec. 31, 2019  – $112 million) in the form of 
letters of credit on derivative instruments in a net liability position. Certain derivative agreements contain credit-risk-
contingent features, which if triggered could result in the Corporation having to post an additional $85 million (Dec. 31, 
2019  – $51 million) of collateral to its counterparties.

F68

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F68

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Inventory held in the normal course of business, which includes coal, emission credits, parts and materials, and natural 
gas,  is  valued  at  the  lower  of  cost  and  net  realizable  value.  Inventory  held  for  trading,  which  includes  natural  gas  and 
17. Inventory
emission credits and allowances, is valued at fair value less costs to sell.

In  the  third  quarter  of  2020,  the  Corporation  adjusted  the  useful  life  of  its  Highvale  mine  assets  to  align  with  the 
Corporation's conversion to gas plans. The standard cost of coal has increased as a result of the increased depreciation 
costs,  in  addition  to  reduced  coal  consumption.    As  the  cost  is  not  expected  to  be  recovered  based  on  current  power 
pricing,  the  Corporation  recognized  a  $37  million  writedown  to  net  realizable  value  on  its  internally  produced  coal 
inventory for the year ended Dec. 31, 2020.

The components of inventory are as follows:

As at Dec. 31

Parts and materials

Coal

Deferred stripping costs

Natural gas
Purchased emission credits(1)
Total

2020

107 

83 

8 

2 

38 

238 

2019

108 

130 

6 

3 

4 

251 

(1) Purchased emissions credits increased due to trading and compliance credits purchased, including those for Alberta compliance under the Technology Innovation 
and Emissions Reduction  program.

The change in inventory is as follows:

Balance, Dec. 31, 2018

Net addition

Change in foreign exchange rates

Balance, Dec. 31, 2019

Net addition

Writedowns

Change in foreign exchange rates

Balance, Dec. 31, 2020

No inventory is pledged as security for liabilities.

242 

12 

(3) 

251 

26 

(37) 

(2) 

238 

The Corporation purchases emissions credits and also generates emissions credits from its Wind and Solar and Hydro 
segments. Emission credits generated from our business have no recorded book value but will be used to offset other 
emissions  obligations  in  the  future,  resulting  in  reduced  fuel  compliance  costs.  At  Dec.  31,  2020,  we  currently  hold 
1,434,761 purchased emission credits (2019 — 388,155) recorded at $38 million (2019 — $4 million) and approximately 
502,653 (2019 — 411,115) emission credits with no recorded book value.

TransAlta Corporation    |    2020  Annual Integrated Report

F69

TRANSALTA CORPORATION F69

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

A reconciliation of the changes in the carrying amount of PP&E is as follows:

18. Property, Plant and Equipment

Land

Coal
generation

Gas 
generation

Renewable
generation

Mining property
and equipment

Assets under
construction

Capital spares
and other(1)

Total

Cost

As at Dec. 31, 2018

Adjustments on implementation of  IFRS 16 

Additions
Acquisitions (Note 4(R) and 4(T))(2)
Disposals(3)

(Impairment) reversals (Note 7)

Revisions and additions to decommissioning 
   and restoration costs (Note 23)

Retirement of assets

Change in foreign exchange rates
Transfers(4)

As at Dec. 31, 2019

Additions

Acquisitions (Note 4(K))

Disposals

Impairment (Note 7)

Revisions and additions to decommissioning 
   and restoration costs (Note 23)

Retirement of assets

Change in foreign exchange rates
Transfers(4)

As at Dec. 31, 2020

Accumulated depreciation

As at Dec. 31, 2018

Adjustments on implementation of  IFRS 16

Depreciation

Retirement of assets

Disposals(3)

Impairment reversal (Note 7)

Change in foreign exchange rates

Transfers

As at Dec. 31, 2019

Depreciation

Retirement of assets

Disposals

Change in foreign exchange rates

Transfers

As at Dec. 31, 2020

Carrying amount

As at Dec. 31, 2018

As at Dec. 31, 2019

As at Dec. 31, 2020

94 

— 

— 

— 

(2)   

— 

— 

— 

(1)   

— 

91 

— 

— 

(2)   

(9)   

— 

— 

(1)   

17 

96 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

94 

91 

96 

5,937 

1,964 

3,286 

— 

— 

300 

(389)   

448 

(62)   

(158)   

(63)   

103 

6,116 

— 

— 

(1)   

(69)   

21 

(35)   

(37)   

142 

— 

— 

— 

(260)   

— 

11 

(26)   

(40)   

22 

1,671 

— 

1 

— 

— 

(11)   

(12)   

45 

(263)   

(7)   

— 

— 

(2)   

2 

(7)   

(17)   

319 

3,574 

— 

— 

— 

(2)   

8 

(7)   

(14)   

33 

1,338 

(101)   

— 

— 

(34)   

(15)   

26 

(10)   

(3)   

25 

1,226 

— 

— 

— 

— 

76 

(3)   

(2)   

(29)   

6,137 

1,431 

3,592 

1,268 

3,765 

1,128 

1,161 

— 

304 

(158)   

(170)   

297 

(52)   

10 

3,996 

352 

(31)   

(1)   

(35)   

— 

4,281 

2,172 

2,120 

1,856 

— 

77 

(23)   

(255)   

— 

(16)   

(11)   

900 

76 

(10)   

— 

18 

(212)   

772 

836 

771 

659 

(3)   

136 

(3)   

— 

— 

(4)   

(3)   

1,284 

142 

(6)   

— 

(4)   

— 

1,416 

2,125 

2,290 

2,176 

830 

(43)   

97 

(6)   

(14)   

— 

(2)   

(22)   

840 

133 

(4)   

— 

(2)   

(29)   

938 

508 

386 

330 

200 

— 

407 

139 

— 

— 

— 

— 

(4)   

(514)   

228 

478 

— 

— 

— 

— 

— 

— 

383 

  13,202 

— 

115 

— 

(108) 

522 

439 

(19)   

(704) 

— 

— 

— 

(6)   

16 

431 

(23) 

(201) 

(134) 

(29) 

489 

  13,395 

8 

— 

(2)   

(1)   

— 

(1)   

6 

486 

1 

(5) 

(81) 

94 

(58) 

(3) 

(211)   

495 

(120)   

(431) 

379 

  13,398 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

154 

7,038 

— 

16 

— 

— 

— 

(2)   

— 

(46) 

630 

(190) 

(439) 

297 

(76) 

(26) 

168 

7,188 

14 

— 

(1)   

2 

717 

(51) 

(2) 

(21) 

(14)   

(255) 

169 

7,576 

200 

228 

495 

229 

321 

210 

6,164 

6,207 

5,822 

(1) Includes major spare parts and stand-by equipment available, but not in service, and spare parts used for routine, preventive or planned maintenance, and the 
Australian gas pipeline.
(2) 2019 includes $308 million related to the acquisition of the Keephills 3 facility with $300 million included in coal generation and the remainder in assets under 
construction.
(3) In 2019, we sold the Genesee 3 facility and sold the major components of the Mississauga facility. In addition, Centralia sold boiler parts included in capital spares 
and  other  for  a  net  loss  of  $17  million.  The  Highvale  mine  also  sold  trucks  included  in  mining  property  and  equipment  for  a  net  loss  of  $18  million.  Both  were 
recognized in other gains on the statement of earnings (loss).
(4) 2020 transfers out of PP&E mainly relate to removing the Southern Cross assets from PP&E to a finance lease receivable and moving the Pioneer Pipeline and mine 
equipment to assets held for sale. 2020 transfers between the classifications of PP&E relate to the Centralia land purchase, the Sundance Unit 6 conversion to gas, the 
WindCharger  project  and  planned  major  maintenance.  2019  transfers  mainly  relate  to  transferring  the  Pioneer  Pipeline  and  US  Wind  Projects  from  assets  under 
construction to coal generation and renewable generation, respectively. 

F70

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F70

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Additions in 2020 included cash additions related to the conversions to gas of $93 million, the Windrise wind project of 
$156 million, the WindCharger battery storage project of $6 million, the Kaybob cogeneration project of $31 million, 
Centralia  mine  land  of  $17  million  and  planned  major  maintenance  expenditures.  Additions  in  2019  included  cash 
additions  of  $417  million  (including  $169  million  related  to  the  construction  of  the  US  Wind  Projects),  $100  million 
related  to  the  Pioneer  Pipeline  (including  $15  million  transferred  from  other  assets)  and  $5  million  related  to  the 
Keephills 3 and Genesee 3 asset swap. Refer to Note 4 for further details of these transactions. 

Depreciation expense increased mainly as a result of decisions to accelerate the Highvale mine shutdown to align with 
our  conversion  to  gas  plans,  reflecting  our  transition  away  from  coal.  Depreciation  expense  also  increased  due  to  the 
Keephills 3 and Genesee 3 swap, the reversal of the impairment at Centralia and the changes in useful lives, all of which 
were effective in the second half of 2019. For further details on these changes, refer to Note 3(A)(III) and Note 4(R).

In 2020, the Corporation capitalized $8 million (2019 — $6 million) of interest to PP&E in at a weighted average rate of 
6.0 per cent (2019 —5.9 per cent). 

The Corporation leases various properties and types of equipment. Lease contracts are typically made for fixed periods. 
Leases are negotiated on an individual basis and contain a wide range of terms and conditions. The lease agreements do 
19. Right-of-Use Assets
not impose covenants, but leased assets may not be used as security for borrowing purposes.

A reconciliation of the changes in the carrying amount of the right-of-use assets is as follows:

Land

Buildings

Vehicles

Equipment

Pipeline

Total

New leases recognized Jan. 1, 2019  
Adjustments on recognition(1)

Transfers from PP&E, intangibles
   and other assets

As at Jan. 1, 2019

Additions

Depreciation

Changes in foreign exchange rates

Transfers

As at Dec. 31, 2019

Additions

Depreciation

As at Dec. 31, 2020

29 

(1)   

— 

28 

32 

(1)   

(1)   

— 

58 

3 

(3)   

58 

22 

(4)   

— 

18 

2 

(4)   

— 

— 

16 

13 

(5)   

24 

1 

— 

3 

4 

— 

(2)   

— 

— 

2 

— 

(1)   

1 

— 

— 

35 

35 

2 

(11)   

— 

(1)   

25 

— 

(9)   

16 

— 

— 

— 

— 

45 

— 

— 

— 

45 

— 

(3)   

42 

52 

(5) 

38 

85 

81 

(18) 

(1) 

(1) 

146 

16 

(21) 

141 

(1) Adjusted by the amount of any prepaid or accrued lease payments, onerous contract provisions and lease inducements. 

In  November  2019,  the  Corporation  recognized  a  right-of-use  asset  and  corresponding  lease  liability  related  to  the 
initial  15-year  term  of  its  contract  for  transporting  natural  gas  on  the  Pioneer  Pipeline.  The  transportation  contract 
provides the Corporation with the right to extend the contract for up to eight additional renewal periods of 24-months 
each. The amounts recognized represent the 50 per cent of the pipeline that is not owned by the Corporation. 

In December 2019, the Corporation recognized an additional $31 million of right-of-use assets and $31 million of lease 
liabilities for land leases at certain wind facilities as a result of revised interpretations of the unit of account  identified 
asset concepts present in IFRS 16.

For the year ended Dec. 31, 2020, TransAlta paid $33 million (2019 — $25 million) related to recognized lease liabilities, 
consisting of $8 million in interest (2019 —$4 million) and $25 million (2019 — $21 million) in principal repayments. 

For the year ended Dec. 31, 2020, the Corporation expensed nil related to short-term (2019 — $2 million) and nil related 
to  low-value  leases  (2019  —  $1  million).  Short-term  leases  (term  of  less  than  12  months)  and  leases  with  total  lease 
payments below the Corporation's  capitalization threshold do not require recognition as lease liabilities and right-of-
use assets.

TransAlta Corporation    |    2020  Annual Integrated Report

F71

TRANSALTA CORPORATION F71

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Some  of  the  Corporation's  land  leases  that  met  the  definition  of  a  lease  were  not  recognized  as  they  require  variable 
payments based on production or revenue. Additionally, certain land leases require payments to be made on the basis of 
the greater of the minimum fixed payments and variable payments based on production or revenue. For these leases, 
lease liabilities have been recognized on the basis of the minimum fixed payments. For the year ended Dec. 31, 2020, the 
Corporation  expensed  $7  million  (2019  —  $6  million)  in  variable  land  lease  payments  for  these  leases.  For  further 
information regarding leases refer to Note 5, 11, 24 and 36. 

A reconciliation of the changes in the carrying amount of intangible assets is as follows:
20. Intangible Assets

Coal rights

Software
and other

Power
sale
contracts

Intangibles
under
development

Total

Cost

As at Dec. 31, 2018

Assets transferred to right-of-use assets on 
   implementation of IFRS 16 (Note 19)

Additions

Acquisition

Disposals (Note 4(R))

Change in foreign exchange rates

Transfers

As at Dec. 31, 2019

Additions

Acquisition (Note 4(K))

Disposals

Change in foreign exchange rates

Transfers

As at Dec. 31, 2020

Accumulated amortization

As at Dec. 31, 2018

Assets transferred to right-of-use assets on 
   implementation of IFRS 16 (Note 19)

Amortization

Disposals (Note 4(R))

Change in foreign exchange rates

Transfers

As at Dec. 31, 2019

Amortization

Disposals

Transfers

As at Dec. 31, 2020

Carrying amount

As at Dec. 31, 2018

As at Dec. 31, 2019

As at Dec. 31, 2020

185 

339 

237 

— 

— 

— 

(37)   

— 

1 

149 

— 

— 

— 

— 

— 

149 

(5)   

— 

1 

(1)   

(4)   

48 

378 

— 

— 

(1)   

— 

35 

412 

117 

221 

— 

8 

(9)   

— 

1 

117 

8 

— 

— 

125 

68 

32 

24 

(3)   

31 

(1)   

(1)   

(1)   

246 

28 

(1)   

(1)   

272 

118 

132 

140 

— 

— 

— 

— 

(1)   

14 

250 

— 

37 

— 

(2)   

(16)   

269 

96 

— 

11 

— 

— 

— 

107 

15 

— 

1 

123 

141 

143 

146 

46 

— 

14 

15 

— 

(1)   

(63)   

11 

14 

— 

— 

— 

(22)   

3 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 

46 

11 

3 

807 

(5) 

14 

16 

(38) 

(6) 

— 

788 

14 

37 

(1) 

(2) 

(3) 

833 

434 

(3) 

50 

(10) 

(1) 

— 

470 

51 

(1) 

— 

520 

373 

318 

313 

F72

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F72

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Goodwill  acquired  through  business  combinations  has  been  allocated  to  CGUs  that  are  expected  to  benefit  from  the 
synergies of the acquisitions. Goodwill by segments are as follows:
21. Goodwill
As at Dec. 31

2020

2019

Hydro

Wind and Solar

Energy Marketing

Total goodwill

258 

175 

30 

463 

258 

176 

30 

464 

For the purposes of the 2020 annual goodwill impairment review, the Corporation determined the recoverable amounts 
of the Wind and Solar segment by calculating the fair value less costs of disposal using discounted cash flow projections 
based on the Corporation's long-range forecasts for the period extending to the last planned asset retirement in 2073. 
The  resulting  fair  value  measurement  is  categorized  within  Level  III  of  the  fair  value  hierarchy.  No  impairment  of 
goodwill arose for any segment. In 2020, the Corporation relied on the recoverable amounts determined in 2019 for the 
Hydro and Energy Marketing segments in performing the 2020 annual goodwill impairment review. No impairment of 
goodwill arose for any segment.

The  key  assumptions  impacting  the  determination  of  fair  value  for  the  Wind  and  Solar  and  Hydro  segments  are 
electricity  production  and  sales  prices.  Forecasts  of  electricity  production  for  each  facility  are  determined  taking  into 
consideration  contracts  for  the  sale  of  electricity,  historical  production,  regional  supply-demand  balances  and  capital 
maintenance and expansion plans. Forecasted sales prices for each facility are determined by taking into consideration 
contract  prices  for  facilities  subject  to  long-  or  short-term  contracts,  forward  price  curves  for  merchant  plants  and 
regional supply-demand balances. Where forward price curves are not available for the duration of the facility’s useful 
life, prices are determined by extrapolation techniques using historical industry and company-specific data. Electricity 
prices used in these 2020 models ranged between $6 to $160 per MWh during the forecast period (2019 – $5 to $183 
per MWh). Discount rates used for the goodwill impairment calculation in 2020 ranged from 4.8 per cent to 6.3 per cent 
(2019  –  3.6  per  cent  to  7.0  per  cent).  No  reasonable  possible  change  in  the  assumptions  would  have  resulted  in  an 
impairment of goodwill.

TransAlta Corporation    |    2020  Annual Integrated Report

F73

TRANSALTA CORPORATION F73

 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The components of other assets are as follows:
As at Dec. 31
22. Other Assets
South Hedland prepaid transmission access and distribution costs

Deferred licence fees

Project development costs

Long-term prepaids and other assets

Loan receivable

Total other assets

2020

2019

70 

— 

25 

59 

52 

67 

9 

19 

56 

47 

206 

198 

South Hedland prepaid transmission access and distribution costs are costs that are amortized on a straight-line basis 
over the South Hedland PPA contract life. 

Deferred licence fees consist primarily of licences to lease the land on which certain generating assets are located, and 
are amortized on a straight-line basis over the useful life of the generating assets to which the licences relate.

Project  development  costs  primarily  include  the  project  costs  for  US  wind  development  projects  (Note  4(F))  and  an 
Alberta  Hydro development project. Some projects were written off in 2019 and 2018 as they are no longer proceeding 
(see Note 7(D)). 

Long-term prepaids and other assets includes: the funded portion of rail transportation commitments discussed in Note 
36(C),  the  funded  portion  of  the  TransAlta  Energy  Transition  Bill  commitments  discussed  in  Note  36(G)  and  other 
contractually required prepayments and deposits.

The  loan  receivable  relates  to  the  advancement  by  the  Corporation's  subsidiary,  Kent  Hills  Wind  LP,  of  $52  million  
(2019  –  $47  million)  (net)  of  the  Kent  Hills  Wind  bond  financing  proceeds  to  its  17  per  cent  partner.  The  loan  bears 
interest at 4.55 per cent, with interest payable quarterly, commencing on Dec. 31, 2017, is unsecured and matures on 
Oct. 2, 2022. 

F74

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F74

 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The change in decommissioning and other provision balances is as follows:
23. Decommissioning and Other Provisions
Balance, Dec. 31, 2018

Decommissioning and
restoration

407 

IFRS 16 transition adjustment

Liabilities incurred

Liabilities settled

Accretion

Acquisition of liabilities

Disposition of liabilities
Revisions in estimated cash flows(1)
Revisions in discount rates(1)
Reversals

Change in foreign exchange rates

Balance, Dec. 31, 2019

Liabilities incurred

Liabilities settled

Accretion

Acquisition of liabilities
Revisions in estimated cash flows(2)
Revisions in discount rates(3)
Reversals

Change in foreign exchange rates

Balance, Dec. 31, 2020

— 

7 

(34)   

23 

16 

(23)   

96 

16 

— 

(7)   

501 

1 

(18)   

30 

1 

61 

36 

— 

(4)   

608 

Other

49 

(2)   

7 

(9)   

— 

3 

(9)   

7 

— 

(1)   

— 

45 

34 

(19)   

— 

— 

11 

— 

(6)   

— 

65 

Total

456 

(2) 

14 

(43) 

23 

19 

(32) 

103 

16 

(1) 

(7) 

546 

35 

(37) 

30 

1 

72 

36 

(6) 

(4) 

673 

(1)  During  2019,  the  Corporation  adjusted  the  Centralia  mine  decommissioning  and  restoration  provision  as  management  no  longer  believes  that  the  fine  coal 
recovery and reclamation work will occur as originally proposed. Refer to Note 3(A)(III) for further details. In addition, due to the changes in estimated useful lives, the 
discount  rates  used  for  the  Alberta  Thermal  and  mining  operations  decommissioning  provisions  were  changed.  The  use  of  a  lower  inflation  rate  decreased  the 
corresponding liabilities. 
(2) During 2020, the Corporation adjusted the Highvale mine decommissioning and restoration provision to reflect the mine closure advancement, an updated mine 
plan and current mining activity including increased volume of material movement. Refer to Note 3(A)(III) for further details. This increase was partially offset by a 
decrease in the Sarnia decommissioning and restoration provision as a result of an updated engineering study.
(3) Discount rates at Dec. 31, 2020 are generally lower than those at Dec. 31, 2019, due to decreases in the underlying risk-free US and Canadian benchmark yields 
and changes in credit spreads due to volatility within the market as a result of COVID-19. On average, these rates decreased by approximately 0.3 to 0.9 per cent. 

Balance, Dec. 31, 2019

Current portion

Non-current portion

Balance, Dec. 31, 2020

Current portion

Non-current portion

Decommissioning and
restoration

501 

36 

465 

608 

21 

587 

Other

45 

22 

23 

65 

38 

27 

Total

546 

58 

488 

673 

59 

614 

A provision has been recognized for all generating facilities and mines for which TransAlta is legally, or constructively, 
A. Decommissioning and Restoration
required to remove the facilities at the end of their useful lives and restore the sites to their original condition. TransAlta 
estimates that the undiscounted amount of cash flow required to settle these obligations is approximately $1.4 billion, 
which will be incurred between 2021 and 2073. The majority of the costs will be incurred between 2025 and 2050. At 
Dec. 31, 2020, the Corporation had provided a surety bond in the amount of US$147 million (2019 – US$147 million) in 
support  of  future  decommissioning  obligations  at  the  Centralia  coal  mine.  At  Dec.  31,  2020,  the  Corporation  had 
provided  letters  of  credit  in  the  amount  of  $131  million  (2019  –  $128  million)  in  support  of  future  decommissioning 
obligations at the Alberta Highvale mine. 

TransAlta Corporation    |    2020  Annual Integrated Report

F75

TRANSALTA CORPORATION F75

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Other  provisions  also  include  provisions  arising  from  ongoing  business  activities  and  include  amounts  related  to 
B. Other Provisions
commercial  disputes  between  the  Corporation  and  customers  or  suppliers.  Information  about  the  expected  timing  of 
settlement and uncertainties that could impact the amount or timing of settlement has not been provided as this may 
impact the Corporation’s ability to settle the provisions in the most favourable manner.

In addition, during the fourth quarter of 2020 an onerous contract provision of $29 million was recognized as a result of 
a decision to accelerate our plans to eliminate coal as a fuel source at the Sheerness facility by the end of 2021. The last 
coal shipment is expected to be received during the first quarter of 2021, while payments required under the contract 
will continue until 2025.

The amounts outstanding are as follows:
24. Credit Facilities, Long-Term Debt and Lease Liabilities
A. Amounts Outstanding
As at Dec. 31

2020

Credit facilities(2)

Debentures
Senior notes(3)
Non-recourse(4)
Other(5)

Lease liabilities

Less: current portion of long-term debt

Less: current portion of lease liabilities

Total current long-term debt and lease liabilities

Total credit facilities, long-term debt and lease
   liabilities

Carrying
value

114 

249 

886 

1,837 

141 

3,227 

134 

3,361 

(97) 

(8) 

(105) 

3,256 

Face
value

114 

251 

894 

1,858 

147 

3,264 

Interest(1)
 2.7% 

 7.1% 

 5.4% 

 4.1% 

 7.1% 

Carrying
value

220 

647 

905 

1,144 

154 

3,070 

142 

3,212 

(494) 

(19) 

(513) 

2,699 

2019

Face
value

220 

651 

914 

1,157 

162 

3,104 

Interest(1)
 3.5% 

 5.8% 

 5.4% 

 4.3% 

 7.1% 

(1) Interest is an average rate weighted by principal amounts outstanding before the effect of hedging.
(2) Composed of bankers’ acceptances and other commercial borrowings under long-term committed credit facilities.
(3) US face value at Dec. 31, 2020 — US$700 million (Dec. 31, 2019 — US$700 million).
(4) Includes  AU$800 million TEC offering.
(5) Includes US$110 million at Dec. 31, 2020 (Dec. 31, 2019 — US$117 million) of tax equity financing.

The Corporation's credit facilities are summarized in the table below:

As at Dec. 31, 2020

TransAlta Corporation
Committed syndicated bank facility(2)
Canadian committed bilateral credit facilities(3)

TransAlta Renewables
Committed credit facility(2)

Total

Utilized

Facility
size

Outstanding 

letters of credit(1) Actual drawings

Available
capacity

Maturity
date

1,250 

240 

700 

2,190 

379 

150 

92 

621 

114 

— 

757 

Q2 2023

90  Q2 2021 & 2022

— 

114 

608 

1,455 

Q2 2023

(1)  TransAlta  has  obligations  to  issue  letters  of  credit  and  cash  collateral  to  secure  potential  liabilities  to  certain  parties,  including  those  related  to  potential 
environmental obligations, commodity risk management and hedging activities, pension plan obligations, construction projects and purchase obligations. At Dec. 31, 
2020, we provided cash collateral of $49 million.
(2)  TransAlta  has  letters  of  credit  of $89  million  and  TransAlta  Renewables  has  letters  of  credit  of $92  million  issued  from  uncommitted  demand  facilities;  these 
obligations are backstopped and reduce the available capacity on the committed credit facilities. 
(3) One of the bilateral $80 million credit facilities has a maturity date of Q2 2021;the remaining two bilateral credit facilities has a maturity date of Q2, 2022.

F76

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F76

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The $1.95 billion (Dec. 31, 2019 – $1.95 billion) committed syndicated bank facilities are the primary source for short-
term liquidity after the cash flow generated from the Corporation's business. Interest rates on the credit facilities vary 
depending on the option selected – Canadian prime, bankers' acceptances, US LIBOR or US base rate – in accordance 
with a pricing grid that is standard for such facilities. 

In  2019,  the  Corporation  renewed  these  credit  facilities  and  TransAlta  Renewables'  facility  was  increased  by 
$200 million to $700 million.

The Corporation is in compliance with the terms of the credit facilities and all undrawn amounts are fully available. In 
addition to the $1.5 billion available under the credit facilities, the Corporation also has $703 million of available cash 
and cash equivalents and $17 million ($11 million principal portion) in cash restricted for repayment of the OCP bonds 
(refer to section E below).

Debentures bear interest at fixed rates ranging from 6.9 per cent to 7.3 per cent and have maturity dates ranging from 
2029 to 2030.

On Nov. 25, 2020, the Corporation redeemed $400 million of its then due 5.0 per cent medium term notes.

On Aug. 2, 2018, the Corporation early redeemed all of its outstanding 6.40 per cent debentures, which were due Nov. 
18,  2019,  for  the  principal  amount  of  $400  million.  The  redemption  price  was  $425  million  in  aggregate,  including  a 
$19 million prepayment premium recognized in net interest expense and $6 million in accrued and unpaid interest to the 
redemption date.

Senior notes bear interest at rates ranging from 4.5 per cent to 6.5 per cent and have maturity dates ranging from 2022 
to 2040.

During 2018, the Corporation early redeemed its outstanding 6.650 per cent US$500 million senior notes due May 15, 
2018. The repayment was hedged with foreign exchange forwards and cross-currency swaps. The redemption price for 
the  notes  was  approximately  $617  million  (US$516  million),  including  a  $5  million  early  redemption  premium, 
recognized in net interest expense, and $14 million in accrued and unpaid interest to the redemption date. 

A  total  of  US$370  million  (2019  —  US$370  million)  of  the  senior  notes  has  been  designated  as  a  hedge  of  the 
Corporation’s net investment in US foreign operations.

Non-recourse  debt  consists  of  bonds  and  debentures  that  have  maturity  dates  ranging  from  2023  to  2042  and  bear 
interest at rates ranging from 2.95 per cent to 4.51 per cent.

On Oct. 22, 2020, TEC closed an AU$800 million senior secured note offering, by way of a private placement, which is 
secured by, among other things, a first ranking charge over all assets of TEC. The notes bear interest at 4.07 per cent per 
annum,  payable  quarterly  and  matures  on  June  30,  2042,with  principal  payments  starting  on  March  31,  2022.  Funds 
were  used  repay  indebtedness  on  the  credit  facility  and  to  fund  future  growth  opportunities  within  TransAlta 
Renewables.   

During 2018, the Corporation:

Paid out the US$25 million non-recourse debt related to its Mass Solar projects. 

▪
▪ Monetized  the  OCA  and  closed  a  $345  million  bond  offering  through  its  indirect  wholly  owned  subsidiary 
TransAlta OCP by way of private placement. The non-recourse amortizing bonds bear interest from their date 
of issuance at a rate of 4.509 per cent per annum, payable semi-annually and maturing on Aug. 5, 2030.

Other  consists  of  an  unsecured  commercial  loan  obligation  that  bears  interest  at  5.9  per  cent  and  matures  in  2023, 
requiring  annual  payments  of  interest  and  principal,  and  tax  equity  financings  related  to  Big  Level  and  Antrim  of 
$112 million (2019 — $122 million) and Lakeswind of $22 million (2019 — $23 million). 

During 2019, coinciding with Antrim and Big Level each achieving commercial operation, TransAlta received tax equity 
funding of approximately US$41 million and US$85 million, respectively. Refer to Note 4(T) for further details.

Tax equity financings are typically represented by the initial equity investments made by the project investors at each 
project (net of financing costs incurred), except for the Lakeswind acquired tax equity which was initially recognized at 
its  fair  value.  Tax  equity  financing  balances  are  reduced  by  the  value  of  tax  benefits  (production  tax  credits  and  tax 
depreciation) allocated to the investor and by cash distributions paid to the investor for their share of net earnings and 

TransAlta Corporation    |    2020  Annual Integrated Report

F77

TRANSALTA CORPORATION F77

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

cash flow generated at each project. Tax equity financing balances are increased by interest recognized at the implicit 
interest rate. In 2019, the Big Level and Antrim projects claimed accelerated (bonus) tax depreciation of $35 million in 
total, which was allocated to the tax equity investor, and had the effect of reducing the tax equity financing balance. The 
maturity dates of each financing are subject to change and primarily dependent upon when the project investor achieves 
the agreed upon targeted rate of return. The Corporation anticipates the maturity dates of the tax equity financings will 
be:  Big  Level  and  Antrim  -  in  December  2029,  10  years  from  commercial  operation  of  the  projects;  and  Lakeswind  - 
March 31, 2029. 

TransAlta’s debt has terms and conditions, including financial covenants, that are considered normal and customary. As 
at Dec. 31, 2020, the Corporation was in compliance with all debt covenants.

The Melancthon Wolfe Wind, Pingston, TAPC Holdings LP, New Richmond, KHWLP, TEC Hedland and TransAlta OCP 
B. Restrictions related to Non-Recourse Debt and Other Debt
non-recourse bonds with a carrying value of $1.8 billion as at Dec. 31, 2020 (Dec. 31, 2019 - $1.1 billion) are subject to 
customary financing conditions and covenants that may restrict the Corporation’s ability to access funds generated by 
the  facilities’  operations.  Upon  meeting  certain  distribution  tests,  typically  performed  once  per  quarter,  the  funds  are 
able  to  be  distributed  by  the  subsidiary  entities  to  their  respective  parent  entity.  These  conditions  include  meeting  a 
debt service coverage ratio prior to distribution, which was met by these entities in the third quarter of 2020. However, 
funds in these entities that have accumulated since the third quarter test will remain there until the next debt service 
coverage ratio can be calculated in the first quarter of 2021. At Dec. 31, 2020, $73 million (Dec. 31, 2019 –$42 million) 
of cash was subject to these financial restrictions.

Proceeds received from the TEC Notes in the amount of AU$7 million are not able to be accessed by other Corporate 
entities as the funds must be solely used by the project entities for the purpose of paying major maintenance costs.

Additionally, certain non-recourse bonds require that certain reserve accounts be established and funded through cash 
held on deposit and/or by providing letters of credit. 

Non-recourse debts totalling $1,441 million as at Dec. 31, 2020 (Dec. 31, 2019 – $719 million) are each secured by a 
first  ranking  charge  over  all  of  the  respective  assets  of  the  Corporation’s  subsidiaries  that  issued  the  bonds,  which 
C. Security
include PPE with total carrying amounts of $1,277 million at Dec. 31, 2020 (Dec. 31, 2019 – $967 million) and intangible 
assets with total carrying amounts of $88 million (Dec. 31, 2019 – $63 million). At Dec. 31, 2020, a non-recourse bond of 
approximately  $111  million  (Dec.  31,  2019  –  $119  million)  was  secured  by  a  first  ranking  charge  over  the  equity 
interests of the issuer that issued the non-recourse bond. 

The TransAlta OCP bonds have a carrying value of $285 million (Dec. 31, 2019 – $305 million) and are secured by the 
assets of TransAlta OCP, including the right to annual capital contributions and OCA payments from the Government of 
Alberta.  Under  the  OCA,  the  Corporation  receives  annual  cash  payments  on  or  before  July  31  of  approximately $40 
million  (approximately  $37  million,  net  to  the  Corporation),  commencing  Jan.  1,  2017,  and  terminating  at  the  end  of 
2030.

D. Principal Repayments
Principal repayments(1)
Lease liabilities(2)

2021

96 

(5)   

2022

626 

6 

2023

277 

5 

2024

119 

5 

(1) Excludes impact of hedge accounting and derivatives.
(2) Lease liabilities include a lease incentive of $13 million, expected to be received in 2021.

2025

136 

5 

2026 and 
thereafter

2,010 

118 

Total

3,264 

134 

At Dec. 31, 2020, the Corporation had $9 million (Dec. 31, 2019 – $15 million) in restricted cash related to the Big Level 
tax equity financing that is held in a construction reserve account. The proceeds will be released from the construction 
E. Restricted Cash
reserve account upon certain conditions being met, which are expected to be finalized in 2021. 

The Corporation had $17 million (Dec. 31, 2019 – $17 million) of restricted cash related to the TransAlta OCP bonds, 
which is required to be held in a debt service reserve account to fund the next scheduled debt repayment in February 
2021. 

F78

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F78

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The  Corporation  also  had  $45  million  (Dec.  31,  2019  –  nil)  of  restricted  cash  related  to  the  TEC  Notes;  reserves  are 
required to be held under TEC commercial arrangements and for debt service.  Cash reserves may be replaced by letters 
of credit in the future. 

Letters  of  credit  issued  by  TransAlta  are  drawn  on  its  committed  syndicated  credit  facility,  its $240  million  bilateral 
F. Letters of Credit
committed  credit  facilities  and  its  two  uncommitted  $100  million  demand  letters  of  credit  facilities.  Letters  of  credit 
issued by TransAlta Renewables are drawn on its uncommitted $100 million demand letter of credit facility.

Letters of credit are issued to counterparties under various contractual arrangements with the Corporation and certain 
subsidiaries  of  the  Corporation.  If  the  Corporation  or  its  subsidiary  does  not  perform  under  such  contracts,  the 
counterparty may present its claim for payment to the financial institution through which the letter of credit was issued. 
Any  amounts  owed  by  the  Corporation  or  its  subsidiaries  under  these  contracts  are  reflected  in  the  Consolidated 
Statements of Financial Position. All letters of credit expire within one year and are expected to be renewed, as needed, 
in the normal course of business. The total outstanding letters of credit as at Dec. 31, 2020, was $621 million (2019 – 
$690 million) with no (2019 – nil) amounts exercised by third parties under these arrangements. 

On  March  22,  2019,  the  Corporation  entered  into  an  Investment  Agreement  whereby  Brookfield  agreed  to  invest 
$750  million  in  TransAlta  through  the  purchase  of  exchangeable  securities,  which  are  exchangeable  into  an  equity 
25. Exchangeable Securities
ownership interest in TransAlta’s Alberta Hydro Assets in the future at a value based on a multiple of the Alberta Hydro 
Assets’  future-adjusted  EBITDA  ("Option  to  Exchange").  On  May  1,  2019,  Brookfield  invested  the  initial  tranche  of 
$350 million in exchange for seven per cent unsecured subordinated debentures due May 1, 2039.  On Oct. 30, 2020, 
Brookfield invested the second tranche of $400 million in exchange for redeemable, retractable first preferred shares. 

A. $750 million Exchangeable Securities
As at

Dec. 31, 2020

Dec. 31, 2019

Exchangeable debentures – due May 1, 2039
Exchangeable preferred shares(1)

Total long term debt

Carrying 

Carrying 

value Face value

Interest

value Face value

Interest

330 

400 

730 

350 

400 

750 

 7  %

 7  %  

326

— 

326 

350

— 

350 

 7  %

 7  %

(1) Exchangeable preferred share dividends are reported as interest expense.

If  Brookfield  chooses  not  to  exercise  its  Option  to  Exchange  as  outlined  below,  TransAlta  has  the  right  after  Dec.  31, 
2028 to redeem for cash all or any portion of the Exchangeable Securities for the original subscription price, plus any 
accrued but unpaid interest or dividends payable, provided the minimum proceeds to Brookfield for each redemption 
(other  than  the  final  redemption)  is  not  less  than  $100  million  and  provided  all  Exchangeable  Securities  must  be 
redeemed within 36 months of the first optional redemption.

B. Option to Exchange
As at

Description

Dec. 31, 2020

Dec. 31, 2019

Base fair value

Sensitivity

Base fair value

Sensitivity

Option to exchange – embedded derivative

— 

nil
-33  

— 

nil
-27

The  Investment  Agreement  allows  Brookfield  the  Option  to  Exchange  all  of  the  outstanding  exchangeable  securities 
into an equity ownership interest of up to a maximum 49 per cent in an entity formed to hold TransAlta’s Alberta Hydro 
Assets after Dec. 31, 2024. The fair value of the Option to Exchange is considered a Level III fair value measurement as 
there is no available market-observable data. It is therefore valued using a mark-to-forecast model with inputs that are 

TransAlta Corporation    |    2020  Annual Integrated Report

F79

TRANSALTA CORPORATION F79

 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

based  on  historical  data  and  changes  in  underlying  discount  rates  only  when  it  represents  a  long-term  change  in  the 
value of the Option to Exchange.

Sensitivity  ranges  for  the  base  fair  value  are  determined  using  reasonably  possible  alternative  assumptions  for  key 
unobservable  inputs,  which  is  mainly  the  change  in  the  implied  discount  rate  of  the  future  cash  flow.  The  sensitivity 
analysis has been prepared using the Corporation’s assessment that a change in the implied discount rate of the future 
cash flow of 1 per cent is a reasonably possible change.

The  maximum  equity  interest  Brookfield  can  own  with  respect  to  the  Hydro  Assets  is  49  per  cent.  If  Brookfield’s 
ownership interest is less than 49 per cent at conversion, Brookfield has a one-time option payable in cash to increase its 
ownership to up to 49 per cent, exercisable up until Dec. 31, 2028, and provided Brookfield holds at least 8.5 per cent of 
TransAlta’s  common  shares.  Under  this  top-up  option,  Brookfield  will  be  able  to  acquire  an  additional  10  per  cent 
interest  in  the  entity  holding  the  Hydro  Assets,  provided  the  20-day  volume-weighted  average  price  (“VWAP”)  of 
TransAlta’s common shares is not less than $14 per share prior to the exercise of the option, and up to the full 49 per 
cent if the 20-day VWAP of TransAlta’s common shares at that time is not less than $17 per share. To the extent the 
value  of  the  Investment  would  exceed  a  49  equity  interest,  Brookfield  will  be  entitled  to  receive  the  balance  of  the 
redemption price in cash.

The components of defined benefit obligation and other long-term liabilities are as follows:
As at Dec. 31
26. Defined Benefit Obligation and Other Long-Term Liabilities
Defined benefit obligation (Note 31)

Long-term incentive accruals (Note 30)

Other

Total

2020

282 

4 

12 

298 

2019

268 

4 

29 

301 

TransAlta is authorized to issue an unlimited number of voting common shares without nominal or par value.
27. Common Shares
A. Issued and Outstanding
As at Dec. 31

2020

2019

Issued and outstanding, beginning of year

Purchased and cancelled under the NCIB

Effects of share-based payment plans

Stock options exercised

Issued and outstanding, end of year

Common
shares
 (millions)
277.0 

(7.3)   

— 

0.1 

Common
shares
(millions)

284.6 

(7.7)   

— 

0.1 

Amount

2,978 

(79)   

(3)   

— 

Amount

3,059 

(83) 

— 

2 

269.8 

2,896 

277.0 

2,978 

Shares purchased by the Corporation under the NCIB are recognized as a reduction to share capital equal to the average 
carrying value of the common shares. Any difference between the aggregate purchase price and the average carrying 
B. NCIB Program
value of the common shares is recorded in deficit.

F80

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F80

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements
Notes to Consolidated Financial Statements

The following are the effects of the Corporation's purchase and cancellation of the common shares during the year:

For the year ended Dec. 31

Total shares purchased(1)

Average purchase price per share

Total cost

Weighted average book value of shares cancelled

Amount recorded in deficit

2020

2019

7,352,600 

7,716,300 

$ 

8.33  $ 

8.80 

61 

79 

18 

68 

83 

15 

(1) As at Dec. 31, 2020, includes 456,200 (2019 -189,900) shares that were repurchased but were not cancelled due to timing differences between the transaction 
date and settlement date.

The Corporation initially adopted the Shareholder Rights Plan in 1992, which was amended and restated on April 26, 
2019, to reflect current market practice and to reflect changes to the take-over bid regime. As required, the Shareholder 
C. Shareholder Rights Plan 
Rights Plan must be put before the Corporation’s shareholders every three years for approval, and it was last approved 
on  April  26,  2019.  The  primary  objective  of  the  Shareholder  Rights  Plan  is  to  encourage  a  potential  acquirer  to  meet 
certain  minimum  standards  designed  to  promote  the  fair  and  equal  treatment  of  all  common  shareholders.  When  an 
acquiring  shareholder  acquires  20  per  cent  or  more  of  the  Corporation’s  common  shares,  except  in  limited 
circumstances including by way of a “permitted bid” or a "competing permitted bid" (as defined in the Shareholder Rights 
Plan),  the rights granted under the Shareholder Rights Plan become exercisable by all shareholders except those held by 
the  acquiring  shareholder.  Each  right  will  entitle  a  shareholder,  other  than  the  acquiring  shareholder,  to  purchase 
additional common shares at a significant discount to market, thus exposing the person acquiring 20 per cent or more of 
the shares to substantial dilution of their holdings.

Year ended Dec. 31
D. Earnings per Share
Net earnings (loss) attributable to common shareholders

Basic and diluted weighted average number of common shares outstanding (millions)

Net earnings (loss) per share attributable to common shareholders, basic and diluted

2020

(336)   

275 

(1.22)   

2019

52 

283 

0.18 

2018

(248) 

287 

(0.86) 

On  Dec.  23,  2020,  the  Corporation  declared  a  quarterly  dividend  of  $0.0450  per  common  share,  payable  on  April  1, 
2021. On Nov. 3, 2020, the Corporation declared a quarterly dividend of $0.0425 per common share, payable on Jan. 1, 
E. Dividends
2021. 

There have been no other transactions involving common shares between the reporting date and the date of completion 
of these consolidated financial statements.

All preferred shares issued and outstanding are non-voting cumulative redeemable fixed or floating rate first preferred 
28. Preferred Shares
shares.
A. Issued and Outstanding
As at Dec. 31

2019

2020

Series

Series A

Series B

Series C

Series E

Series G

Issued and outstanding, end of year

Number of 
shares
 (millions)
10.2 

1.8 

11.0 

9.0 

6.6 

38.6 

Number of 
shares
(millions)

Amount

Amount

248 

45 

269 

219 

161 

942 

10.2 

1.8 

11.0 

9.0 

6.6 

38.6 

248 

45 

269 

219 

161 

942 

TransAlta Corporation    |    2020  Annual Integrated Report

F81

TRANSALTA CORPORATION F81

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

I. Series G Cumulative Redeemable Rate Reset Preferred Shares Conversion
On Aug. 30, 2019, the Corporation announced that, after taking into account all election notices received by the Sept. 
15, 2019, deadline for the conversion of the Cumulative Redeemable Rate Reset Preferred Shares, Series G (the “Series 
G  Shares”)  into  Cumulative  Redeemable  Floating  Rate  Preferred  Shares  Series  H  (the  “Series  H  Shares”),  there  were 
140,730 Series G Shares tendered for conversion, which was less than the one million shares required to give effect to 
conversions into Series H Shares. Therefore, none of the Series G Shares were converted into Series H Shares on Sept. 
30,  2019.  As  a  result,  the  Series  G  Shares  will  be  entitled  to  receive  quarterly  fixed  cumulative  preferential  cash 
dividends,  if,  as  and  when  declared  by  the  Board.  The  annual  dividend  rate  for  the  Series  G  Shares  for  the  five-year 
period from and including Sept. 30, 2019, to, but excluding, Sept. 30, 2024, will be 4.988 per cent, which is equal to the 
five-year  Government  of  Canada  bond  yield  of 1.188  per  cent,  determined  as  of  Aug.  30,  2019,  plus 3.80  per  cent,  in 
accordance with the terms of the Series G Shares. 

II. Series E Cumulative Redeemable Rate Reset Preferred Shares Conversion
On Sept. 17, 2017, the Corporation announced that, after taking into account all election notices received by the Sept. 
15, 2017, deadline for the conversion of the Cumulative Redeemable Rate Reset Preferred Shares, Series E (the “Series 
E  Shares”)  into  Cumulative  Redeemable  Floating  Rate  Preferred  Shares  Series  F  (the  “Series  F  Shares”),  there  were 
133,969 Series E Shares tendered for conversion, which was less than the one million shares required to give effect to 
conversions into Series F Shares. Therefore, none of the Series E Shares were converted into Series F Shares on Sept. 30, 
2017. As a result, the Series E Shares will be entitled to receive quarterly fixed cumulative preferential cash dividends, if, 
as and when declared by the Board. The annual dividend rate for the Series E Shares for the five-year period from and 
including  Sept.  30,  2017,  to,  but  excluding,  Sept.  30,  2022,  will  be  5.194  per  cent,  which  is  equal  to  the  five-year 
Government of Canada bond yield of 1.544 per cent, determined as of Aug. 31, 2017, plus 3.65 per cent, in accordance 
with the terms of the Series E Shares. 

III. Series C Cumulative Redeemable Rate Reset Preferred Shares Conversion
On June 16, 2017, the Corporation announced that, after taking into account all election notices received by the June 
15, 2017, deadline for the conversion of the Cumulative Redeemable Rate Reset Preferred Shares, Series C (the “Series 
C  Shares”)  into  Cumulative  Redeemable  Floating  Rate  Preferred  Shares  Series  D  (the  “Series  D  Shares”),  there  were 
827,628 Series C Shares tendered for conversion, which was less than the one million shares required to give effect to 
conversions into Series D Shares. Therefore, none of the Series C Shares were converted into Series D Shares on June 
30,  2017.  As  a  result,  the  Series  C  Shares  will  be  entitled  to  receive  quarterly  fixed  cumulative  preferential  cash 
dividends,  if,  as  and  when  declared  by  the  Board.  The  annual  dividend  rate  for  the  Series  C  Shares  for  the  five-year 
period from and including June 30, 2017, to, but excluding, June 30, 2022, will be 4.027 per cent, which is equal to the 
five-year  Government  of  Canada  bond  yield  of 0.927  per  cent,  determined  as  of  May  31,  2017,  plus 3.10  per  cent,  in 
accordance with the terms of the Series C Shares. 

IV. Series A Cumulative Fixed Redeemable Rate Reset Preferred Shares Conversion 
On  March  17,  2016,  the  Corporation  announced  that  1,824,620  of  its  12.0  million  Series  A  Cumulative  Fixed 
Redeemable Rate Reset Preferred Shares ("Series A Shares") were tendered for conversion, on a one-for-one basis, into 
Series B Cumulative Redeemable Floating Rate Preferred Shares ("Series B Shares") after having taken into account all 
election notices. As a result of the conversion, the Corporation had 10.2 million Series A Shares and 1.8 million Series B 
Shares issued and outstanding at Dec. 31, 2020.

The Series A Shares pay fixed cumulative preferential cash dividends on a quarterly basis for the five-year period from 
and  including  March  31,  2016,  to,  but  excluding,  March  31,  2021,  if,  as  and  when  declared  by  the  Board  based  on  an 
annual fixed dividend rate of 2.709 per cent.

The Series B Shares pay quarterly floating rate cumulative preferential cash dividends for the five-year period from and 
including March 31, 2016, to, but excluding, March 31, 2021, if, as and when declared by the Board based on the 90-day 
Treasury Bill rate plus 2.03 per cent.

On March 1, 2021, the Corporation announced that it does not intend to exercise its right to redeem all or any part of 
the currently outstanding Series A Shares and Series B Shares. The Corporation has provided a notice to the registered 
shareholders  of  Series  A  Shares  of  the  conversion  right,  on  a  one-for-one  basis,  into  Series  B  Shares,  and  vice  versa, 
providing  Series  B  shareholders  the  right  to  exchange  Series  B  Shares,  on  a  one-for-one  basis,  into  Series  A  Shares. 
Series A shareholders may elect to retain any or all of their current share holdings and continue to receive a fixed rate 
quarterly dividend.  Series B shareholder may also elect to retain any or all of their current share holdings and continue 
to  receive  a  floating  rate  quarterly  dividend.  After  exercising  conversion  rights,  if  the  balance  that  remains  for  either 

F82

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F82

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Series A Shares or Series B Shares is less than 1 million, that remaining balance of will automatically convert to the other 
Series. Shareholders' notice of intention to convert must be received by the transfer agent no later than March 16, 2021 
and the conversion date will be effective March 31, 2021. The annual dividend rate for the Series A Shares for the five-
year period from and including March 31, 2021, to, but excluding, March 31, 2026, will be 2.877 per cent, which is equal 
to the five-year Government of Canada Bond yield of 0.847 per cent, determined as of March 1, 2021, plus 2.03 per cent. 
The annual dividend rate for the Series B Shares for the three month floating rate period from and including March 31, 
2021, to, but excluding, June 30, 2021, will be 2.103 per cent based on the most recent auction of 90-day Government of 
Canada  Treasury  Bills  of  0.073  per  cent  plus  2.03  per  cent.  The  Floating  Quarterly  Dividend  Rate  will  be  reset  every 
quarter.  

V. Preferred Share Series Information 
The  holders  are  entitled  to  receive  cumulative  fixed  quarterly  cash  dividends  at  a  specified  rate,  as  approved  by  the 
Board.  After  an  initial  period  of  approximately  five  years  from  issuance  and  every  five  years  thereafter  (“Rate  Reset 
Date”),  the  fixed  rate  resets  to  the  sum  of  the  then  five-year  Government  of  Canada  bond  yield  (the  fixed  rate 
“Benchmark”) plus a specified spread. Upon each Rate Reset Date, the shares are also:

▪

▪

Redeemable at the option of the Corporation, in whole or in part, for $25.00 per share, plus all declared and 
unpaid dividends at the time of redemption. 
Convertible  at  the  holder’s  option  into  a  specified  series  of  non-voting  cumulative  redeemable  floating  rate 
first  preferred  shares  that  pay  cumulative  floating  rate  quarterly  cash  dividends,  as  approved  by  the  Board, 
based on the sum of the then Government of Canada 90-day Treasury Bill rate (the floating rate “Benchmark”) 
plus a specified spread. The cumulative floating rate first preferred shares are also redeemable at the option of 
the  Corporation  and  convertible  back  into  each  original  cumulative  fixed  rate  first  preferred  share  series,  at 
each subsequent Rate Reset Date, on the same terms as noted above.

Characteristics specific to each first preferred share series as at Dec. 31, 2020, are as follows:

Series

Rate during term

A

B

C

D

E

F

G

H

Fixed

Floating

Fixed

Floating

Fixed

Floating

Fixed

Floating

Annual dividend
rate per share ($)
0.67724 

0.73801 

1.00676 

— 

Next
conversion
date

March 31, 2021

March 31, 2021

June 30, 2022

— 

1.29852 

Sept. 30, 2022

— 

— 

1.24700 

Sept. 30, 2024

— 

— 

Rate spread
over Benchmark
 (per cent)
 2.03 

 2.03 

 3.10 

 3.10 

 3.65 

 3.65 

 3.80 

 3.80 

The following table summarizes the value of the preferred share dividends declared in 2020, 2019 and 2018:
B. Dividends
Series

Total dividends declared

2020

A
B(2)
C

E

G

Total for the year

9 

1 

14 

15 

10 

49 

2019(1)
5 

1 

8 

9 

7 

30 

(1) No dividends were declared in the first quarter of 2019 as the quarterly dividend related to the period covering the first quarter of 2019 was declared in December 
2018.
(2) Series B Preferred Shares pay quarterly dividends at a floating rate based on the 90-day Government of Canada Treasury Bill rate, plus 2.03 per cent. 

On  Dec.  23,  2020,  the  Corporation  declared  a  quarterly  dividend  of  $0.16931  per  share  on  the  Series  A  preferred 
shares,  $0.13186  per  share  on  the  Series  B  preferred  shares,  $0.25169  per  share  on  the  Series  C  preferred  shares, 
$0.32463  per  share  on  the  Series  E  preferred  shares,  and  $0.31175  per  share  on  the  Series  G  preferred  shares,  all 
payable on March 31, 2021. 

TransAlta Corporation    |    2020  Annual Integrated Report

F83

TRANSALTA CORPORATION F83

Convertible to
Series

B

A

D

C

F

E

H

G

2018

9 

1 

14 

15 

11 

50 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The components of, and changes in, accumulated other comprehensive income (loss) are as follows:
29. Accumulated Other Comprehensive Income
Currency translation adjustment

2020

2019

Opening balance, Jan. 1

Gains (losses) on translating net assets of foreign operations, net of reclassifications to net earnings, 
   net of tax

Gains (losses) on financial instruments designated as hedges of foreign operations, net of 
   reclassifications to net earnings, net of tax

Balance, Dec. 31

Cash flow hedges

Opening balance, Jan. 1

Gains (losses) on derivatives designated as cash flow hedges, net of reclassifications to net earnings and 
   to non-financial assets, net of tax(1)

Balance, Dec. 31

Employee future benefits

Opening balance, Jan. 1
Net actuarial gains (losses) on defined benefit plans, net of tax(2)

Balance, Dec. 31

Other

Opening balance, Jan. 1

Change in ownership of TransAlta Renewables

Intercompany investments at FVOCI

Balance, Dec. 31

Accumulated other comprehensive income

(1) Net of income tax of $23 million for the year ended Dec. 31, 2020 (2019 — $6 million).
(2) Net of income tax of $3 million for the year ended Dec. 31, 2020 (2019 — $7 million).

(21)   

(11)   

11 

(21)   

527 

(91)   

436 

(55)   

(11)   

(66)   

3 

— 

(50)   

(47)   

302 

17 

(59) 

21 

(21) 

508 

19 

527 

(29) 

(26) 

(55) 

(15) 

1 

17 

3 

454 

F84

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F84

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The Corporation has the following share-based payment plans:
30. Share-Based Payment Plans

Under  the  PSU  and  RSU  Plan,  grants  may  be  made  annually,  but  are  measured  and  assessed  over  a  three-year 
performance  period.  Grants  are  determined  as  a  percentage  of  participants’  base  pay  and  are  converted  to  PSUs  or 
A. Performance Share Unit (“PSU”) and Restricted Share Unit (“RSU”) Plan
RSUs  on  the  basis  of  the  Corporation’s  common  share  price  at  the  time  of  grant.  Vesting  of  PSUs  is  subject  to 
achievement over a three-year period of two to three performance measures that are established at the time of each 
grant.  RSUs  are  subject  to  a  three-year  cliff-vesting  requirement.  RSUs  and  PSUs  track  the  Corporation’s  share  price 
over  the  three-year  period  and  accrue  dividends  as  additional  units  at  the  same  rate  as  dividends  paid  on  the 
Corporation’s common shares. 

During 2019, as a result of the Corporation's change in its intended settlement policy, the accounting classification of 
the RSUs and PSUs changed from cash-settled to equity-settled. The RSUs and PSUs have been accounted for as equity-
settled grants from the dates of the policy change, with fair values determined as at that date. On average, the fair value 
of  outstanding  grants  used  in  accounting  for  the  change  was  $8.29,  measured  using  the  Black-Scholes  option  pricing 
model.  As  a  result  of  this  change,  the  liability  for  the  cash-settled  grants  ($25  million)  has  been  derecognized  and  the 
equity-settled fair value ($24 million) has been recognized in contributed surplus, with the net difference of $1 million
representing  the  cumulative  change  in  compensation  expense.  No  changes  were  made  to  the  vesting  or  performance 
conditions associated with the awards. The Human Resources Committee of the Board has the discretion to determine 
whether  payments  on  settlement  are  made  through  purchase  of  shares  on  the  open  market  or  in  cash.  The  expenses 
related  to  this  plan  are  recognized  during  the  period  earned,  with  the  corresponding  amounts  due  under  the  plan 
recorded  in  contributed  surplus  (2018  —  liabilities).  Prior  to  this  change,  the  liability  was  valued  at  the  end  of  each 
reporting period using the closing price of the Corporation’s common shares on the TSX.

The pre-tax compensation expense related to PSUs and RSUs in 2020 was $15 million (2019 — $19 million, 2018 — $8 
million),  which  is  included  in  operations,  maintenance  and  administration  expense  in  the  Consolidated  Statements  of 
Earnings (Loss).

Under  the  DSU  Plan,  members  of  the  Board  and  executives  may,  at  their  option,  purchase  DSUs  using  certain 
components  of  their  fees  or  pay.    A  DSU  is  a  notional  share  that  has  the  same  value  as  one  common  share  of  the 
B. Deferred Share Unit (“DSU”) Plan
Corporation and fluctuates based on the changes in the value of the Corporation’s common shares in the marketplace. 
DSUs accrue dividends as additional DSUs at the same rate as dividends are paid on the Corporation’s common shares. 
DSUs are redeemable in cash and may not be redeemed until the termination or retirement of the director or executive 
from the Corporation.

The Corporation accrues a liability and expense for the appreciation in the common share value in excess of the DSU’s 
purchase  price  and  for  dividend  equivalents  earned.  The  pre-tax  compensation  expense  related  to  the  DSUs  was $1 
million in 2020 (2019 — $2 million, 2018 — nil).

The Corporation is authorized to grant options to purchase up to an aggregate of 16.5 million common shares at prices 
based  on  the  market  price  of  the  shares  on  the  TSX  as  determined  on  the  grant  date.  The  plan  provides  for  grants  of 
C. Stock Option Plans
options to all full-time employees, including executives, designated by the Human Resources Committee from time to 
time.

In  2020,  the  Corporation  granted  executive  officers  of  the  Corporation  a  total  of  0.7  million  stock  options  with  a 
weighted average exercise price of $9.17 that vest after a three-year period and expire seven years after issuance (2019 
— 1.4 million stock options at $5.65; 2018 — 0.7 million stock options at $7.45). The expense recognized relating to these 
grants during 2020 was approximately $2 million (2019 — approximately $1 million, 2018 — approximately $1 million).

TransAlta Corporation    |    2020  Annual Integrated Report

F85

TRANSALTA CORPORATION F85

 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The total options outstanding and exercisable under these stock option plans at Dec. 31, 2020, are outlined below:

Range of exercise prices(1)
($ per share)

5.00 - 10.00

 (1) Options currently exercisable as at Dec. 31, 2020.

Options outstanding

Number of 
options  
(millions)

Weighted
average
remaining
contractual
life (years)

Weighted
average
exercise
price
 ($ per share)

4.0 

4.2 

6.85 

The  Corporation  sponsors  registered  pension  plans  in  Canada  and  the  US  covering  substantially  all  employees  of  the 
31. Employee Future Benefits
Corporation in these countries and specific named employees working internationally. These plans have defined benefit 
A. Description 
and  defined  contribution  options,  and  in  Canada  there  is  an  additional  non-registered  supplemental  plan  for  eligible 
employees whose annual earnings exceed the Canadian income tax limit. Except for the Highvale pension plan acquired 
in 2013, the Canadian and US defined benefit pension plans are closed to new entrants. The US defined benefit pension 
plan was frozen effective Dec. 31, 2010, resulting in no future benefits being earned.  The supplemental pension plan 
was  closed  as  of  Dec.  31,  2015,  and  a  new  defined  contribution  supplemental  pension  plan  commenced  for  executive 
members effective Jan. 1, 2016.  Current executives as of Dec. 31, 2015, were grandfathered into the old supplemental 
plan.

The latest actuarial valuation for accounting purposes of the US pension plan was at Jan. 1, 2020. The latest actuarial 
valuation for accounting purposes of the Highvale and Canadian pension plans was at Dec. 31, 2019. The measurement 
date used for all plans to determine the fair value of plan assets and the present value of the defined benefit obligation 
was Dec. 31, 2020.

Funding  of  the  registered  pension  plans  complies  with  applicable  regulations  that  require  actuarial  valuations  of  the 
pension funds at least once every three years in Canada, or more, depending on funding status, and every year in the US. 
The supplemental pension plan is solely the obligation of the Corporation. The Corporation is not obligated to fund the 
supplemental plan but is obligated to pay benefits under the terms of the plan as they come due. The Corporation posted 
a letter of credit in March 2020 for the amount of $89 million to secure the obligations under the supplemental plan.

The  Corporation  provides  other  health  and  dental  benefits  to  the  age  of  65  for  both  disabled  members  and  retired 
members through its other post-employment benefits plans. The latest actuarial valuations for accounting purposes of 
the  Canadian  and  US  plans  were  as  at  Dec.  31,  2019,  and  Jan.  1,  2020,  respectively.  The  measurement  date  used  to 
determine the present value obligation for both plans was Dec. 31, 2020.

The  Corporation  provides  several  defined  contribution  plans,  including  an  Australian  superannuation  plan  and  a  US 
401(k)  savings  plan,  that  provide  for  company  contributions  from  5  per  cent  to  10  per  cent,  depending  on  the  plan. 
Optional employee contributions are allowed for all the defined contribution plans.

F86

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F86

 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The costs recognized in net earnings during the year on the defined benefit, defined contribution and other post-
B. Costs Recognized
employment benefits plans are as follows:
Year ended Dec. 31, 2020

Supplemental

Registered

Other

Current service cost

Administration expenses

Interest cost on defined benefit obligation

Interest on plan assets

Curtailment and amendment gain

Defined benefit expense

Defined contribution expense

Net expense

Year ended Dec. 31, 2019

Current service cost

Administration expenses

Interest cost on defined benefit obligation

Interest on plan assets

Curtailment and amendment gain

Defined benefit expense

Defined contribution expense

Net expense

Year ended Dec. 31, 2018

Current service cost

Administration expenses

Interest cost on defined benefit obligation

Interest on plan assets

Defined benefit expense

Defined contribution expense

Net expense

5 

1 

16 

(11)   

(2)   

9 

9 

18 

2 

— 

3 

(1)   

— 

4 

— 

4 

1 

— 

1 

— 

— 

2 

— 

2 

Total

8 

1 

20 

(12) 

(2) 

15 

9 

24 

Registered

Supplemental

Other

Total

7 

2 

19 

(12)   

(3)   

13 

9 

22 

2 

— 

3 

(1)   

— 

4 

— 

4 

1 

— 

1 

— 

— 

2 

— 

2 

10 

2 

23 

(13) 

(3) 

19 

9 

28 

Registered

Supplemental

Other

Total

9 

1 

18 

(13)   

15 

10 

25 

2 

— 

3 

— 

5 

— 

5 

1 

— 

1 

— 

2 

— 

2 

12 

1 

22 

(13) 

22 

10 

32 

TransAlta Corporation    |    2020  Annual Integrated Report

F87

TRANSALTA CORPORATION F87

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The status of the defined benefit pension and other post-employment benefit plans is as follows:
C. Status of Plans
Year ended Dec. 31, 2020
Fair value of plan assets

Supplemental

Registered

367 

14 

Present value of defined benefit obligation

Funded status – plan deficit

Amount recognized in the consolidated financial statements:

Accrued current liabilities

Other long-term liabilities

Total amount recognized

(542)   

(175)   

(5)   

(170)   

(175)   

(109)   

(95)   

(5)   

(90)   

(95)   

Other

— 

(24)   

(24)   

(2)   

(22)   

(24)   

Year ended Dec. 31, 2019

Fair value of plan assets

Present value of defined benefit obligation

Funded status – plan deficit

Amount recognized in the consolidated financial statements:

Accrued current liabilities

Other long-term liabilities

Total amount recognized

Registered

Supplemental

Other

373 

(543)   

(170)   

(3)   

(167)   

(170)   

13 

(99)   

(86)   

(5)   

(81)   

(86)   

— 

(22)   

(22)   

(2)   

(20)   

(22)   

Total

381 

(675) 

(294) 

(12) 

(282) 

(294) 

Total

386 

(664) 

(278) 

(10) 

(268) 

(278) 

The fair value of the plan assets of the defined benefit pension and other post-employment benefit plans is as follows:
D. Plan Assets
As at Dec. 31, 2018

Supplemental

Registered

Other

368 

13 

— 

Total

381 

Interest on plan assets

Net return on plan assets

Contributions

Benefits paid

Administration expenses

Effect of translation on US plans

As at Dec. 31, 2019

Interest on plan assets

Net return on plan assets

Contributions

Benefits paid

Administration expenses

Effect of translation on US plans

As at Dec. 31, 2020

12 

40 

6 

(50)   

(2)   

(1)   

373 

11 

25 

6 

(45)   

(1)   

(2)   

367 

1 

— 

4 

(5)   

— 

— 

13 

1 

(1)   

6 

(5)   

— 

— 

14 

— 

— 

1 

(1)   

— 

— 

— 

— 

— 

1 

(1)   

— 

— 

— 

13 

40 

11 

(56) 

(2) 

(1) 

386 

12 

24 

13 

(51) 

(1) 

(2) 

381 

F88

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F88

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The fair value of the Corporation’s defined benefit plan assets by major category is as follows:

Year ended Dec. 31, 2020

Equity securities

Canadian

US

International

Private

Bonds

AAA

AA

A

BBB

Below BBB

Money market and cash and cash equivalents

Total

Year ended Dec. 31, 2019

Equity securities

Canadian

US

International

Private

Bonds

AAA

AA

A

BBB

Below BBB

Money market and cash and cash equivalents

Total

Level I

Level II

Level III

Total

— 

— 

— 

— 

— 

— 

— 

1 

— 

— 

1 

64 

30 

103 

— 

36 

67 

34 

22 

4 

19 

379 

— 

— 

— 

1 

— 

— 

— 

— 

— 

— 

1 

64 

30 

103 

1 

36 

67 

34 

23 

4 

19 

381 

Level I

Level II

Level III

Total

— 

— 

— 

— 

— 

— 

— 

1 

— 

— 

1 

66 

28 

102 

— 

40 

68 

37 

21 

3 

19 

384 

— 

— 

— 

1 

— 

— 

— 

— 

— 

— 

1 

66 

28 

102 

1 

40 

68 

37 

22 

3 

19 

386 

Plan assets do not include any common shares of the Corporation at Dec. 31, 2020 and Dec. 31, 2019. The Corporation 
charged the registered plan nil for administrative services provided for the year ended Dec. 31, 2020 (2019 — nil).

TransAlta Corporation    |    2020  Annual Integrated Report

F89

TRANSALTA CORPORATION F89

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The  present  value  of  the  obligation  for  the  defined  benefit  pension  and  other  post-employment  benefit  plans  is  as 
E. Defined Benefit Obligation
follows:

Registered

Supplemental

Other

Present value of defined benefit obligation as at Dec. 31, 2018

Current service cost

Interest cost

Benefits paid

Curtailment

Actuarial gain arising from demographic assumptions

Actuarial loss arising from financial assumptions

Actuarial gain (loss) arising from experience adjustments

Effect of translation on US plans

Present value of defined benefit obligation as at Dec. 31, 2019

Current service cost

Interest cost

Benefits paid

Curtailment

Actuarial loss arising from demographic assumptions

Actuarial loss arising from financial assumptions

Actuarial gain arising from experience adjustments

Effect of translation on US plans

514 

7 

19 

(51)   

(3)   

— 

57 

2 

(2)   

543 

5 

16 

(45)   

(2)   

— 

43 

(17)   

(1)   

80 

2 

3 

(4)   

— 

— 

9 

9 

— 

99 

2 

3 

(5)   

— 

— 

10 

— 

— 

Present value of defined benefit obligation as at Dec. 31, 2020  

542 

109 

25 

1 

1 

(1)   

— 

(2)   

2 

(4)   

— 

22 

1 

1 

(1)   

— 

— 

2 

— 

(1)   

24 

The weighted average duration of the defined benefit plan obligation as at Dec. 31, 2020 is 14.4 years.

Total

619 

10 

23 

(56) 

(3) 

(2) 

68 

7 

(2) 

664 

8 

20 

(51) 

(2) 

— 

55 

(17) 

(2) 

675 

The  expected  employer  contributions  for  2021  for  the  defined  benefit  pension  and  other  post-employment  benefit 
F. Contributions
plans are as follows:

Expected employer contributions

Registered

Supplemental

5 

5 

Other

2 

Total

12 

F90

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F90

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The  significant  actuarial  assumptions  used  in  measuring  the  Corporation’s  defined  benefit  obligation  for  the  defined 
G. Assumptions
benefit pension and other post-employment benefit plans are as follows:

(per cent)

Accrued benefit obligation

Discount rate

Rate of compensation increase

Assumed health-care cost trend rate
Health-care cost escalation(1)(3)
Dental-care cost escalation

Benefit cost for the year

Discount rate

Rate of compensation increase

Assumed health-care cost trend rate
Health-care cost escalation(2)(4)
Dental-care cost escalation

As at Dec. 31, 2020

As at Dec. 31, 2019

Registered Supplemental Other 

Registered

Supplemental Other

 2.4 

 2.9 

 — 

 — 

 3.0 

 2.9 

 — 

 — 

 2.3 

 3.0 

 — 

 — 

 3.0 

 3.0 

 — 

 — 

 2.3 

 — 

 6.8 

 4.0 

 3.0 

 — 

 7.1 

 4.0 

 3.0 

 2.8 

 — 

 — 

 3.9 

 2.5 

 — 

 — 

 3.0 

 3.0 

 — 

 — 

 3.8 

 3.0 

 — 

 — 

 3.0 

 — 

 7.0 

 4.0 

 3.9 

 — 

 7.4 

 4.0 

(1) 2020 Post- and pre-65 rates: decreasing gradually to 4.5% by 2029 and remaining at that level thereafter for the US and decreasing gradually by 0.3% per year to 
4.5% in 2030 for Canada.
(2) 2020 Post- and pre-65 rates: decreasing gradually to 4.5% by 2029 and remaining at that level thereafter for the US and decreasing gradually by 0.3% per year to 
4.5% in 2030 for Canada.
(3) 2019 Post- and pre-65 rates: decreasing gradually to 4.5% by 2030 and remaining at that level thereafter for the US and decreasing gradually by 0.3% per year to 
4.5% in 2027 for Canada.
(4) 2019 Post- and pre-65 rates: decreasing gradually to 4.5% by 2027 and remaining at that level thereafter for the US and decreasing gradually by 0.3% per year to 
4.5% in 2027 for Canada.

The following table outlines the estimated increase in the net defined benefit obligation assuming certain changes in key 
H. Sensitivity Analysis
assumptions:

Year ended Dec. 31, 2020

1% decrease in the discount rate

1% increase in the salary scale

1% increase in the health-care cost trend rate

10% improvement in mortality rates

Canadian plans

US plans

Registered   Supplemental   Other 

Pension Other

74 

5 

— 

20 

17 

— 

— 

4 

2 

— 

2 

— 

3 

4 

— 

1 

1 

1 

— 

— 

TransAlta Corporation    |    2020  Annual Integrated Report

F91

TRANSALTA CORPORATION F91

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Joint arrangements at Dec. 31, 2020, included the following:
32. Joint Arrangements
Joint operations
Alberta Thermal
Sheerness

Ownership
 (per cent) Description

Segment

50

Dual-fuel facility in Alberta, of which TA Cogen has a 50 per cent interest, 
operated by Heartland Generation Ltd., an affiliate of Energy Capital 
Partners

Pioneer Pipeline

Alberta Thermal

Goldfields Power

Australian Gas

Fort Saskatchewan North American Gas

Fortescue River 
   Gas Pipeline

Australian Gas

McBride Lake

Wind and Solar

Soderglen

Pingston

Wind and Solar

Hydro

50

50

60

43

50

50

50

Natural gas pipeline in Alberta operated by TMI

Gas-fired facility in Australia operated by TransAlta

Cogeneration facility in Alberta, of which TA Cogen has a 60 per cent 
interest, operated by TransAlta

Natural gas pipeline in Western Australia, operated by DBP Development 
Group

Wind generation facility in Alberta operated by TransAlta

Wind generation facility in Alberta operated by TransAlta

Hydro facility in British Columbia operated by TransAlta

Joint ventures

Segment

Ownership
 (per cent) Description

Skookumchuck

Wind and Solar

49

Wind generation facility in Washington operated by Southern Power

33. Cash Flow Information
Year ended Dec. 31
A. Change in Non-Cash Operating Working Capital
(Use) source:

Accounts receivable

Prepaid expenses

Income taxes receivable

Inventory

Accounts payable, accrued liabilities and provisions

Income taxes payable

Change in non-cash operating working capital

2020

2019

2018

(79)   

261 

2 

(4)   

6 

160 

4 

89 

— 

(6)   

(13)   

(130)   

9 

121 

58 

19 

— 

(21) 

(97) 

(3) 

(44) 

B. Changes in Liabilities from Financing Activities 
Net cash 
flows

Balance 
Dec. 31, 
2019

New 
leases

Dividends 
declared

Foreign 
exchange 
impact

Balance 
Dec. 31, 
2020

Other

Long-term debt and lease 
  obligations

Exchangeable securities

Dividends payable (common and 
  preferred)

3,212 

326 

133 

400 

37 

(86)   

Total liabilities from financing activities

3,575 

447 

16 

— 

— 

16 

— 

— 

107 

107 

5 

— 

— 

5 

(5)   

3,361 

4 

1 

— 

730 

59 

4,150 

F92

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F92

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Balance 
Dec. 31, 
2018

Net cash 
flows

New 
leases

Tax shield on 
tax equity 
financing

Dividends 
declared

Foreign 
exchange 

impact Other

Balance 
Dec. 31, 
2019

Long-term debt and lease 
   liabilities

Exchangeable securities

Dividends payable (common and 
  preferred)

Total liabilities from financing 
   activities

3,267 

(70)   

133 

(35)   

— 

58 

350 

(85)   

— 

— 

— 

— 

3,325 

195 

133 

(35)   

— 

— 

64 

64 

(42)   

(41)   

3,212 

— 

— 

(24)   

326 

— 

37 

(42)   

(65)   

3,575 

TransAlta’s capital is comprised of the following:
34. Capital
As at Dec. 31
Long-term debt(1)

Exchangeable securities

Equity

Common shares

Preferred shares

Contributed surplus

Deficit

Accumulated other comprehensive income

Non-controlling interests

Less: available cash and cash equivalents(2)
Less: principal portion of restricted cash on TransAlta OCP bonds(3)
Less: fair value asset of hedging instruments on long-term debt(4)

2020

3,361 

730 

2,896 

942 

38 

(1,826)   
302 

1,084 

(703)   
(11)   

(2)   

2019

3,212 

326 

2,978 

942 

42 

(1,455)   

454 

1,101 

(411)   

(10)   

(7)   

Increase/
(decrease)

149 

404 

(82) 

— 

(4) 

(371) 

(152) 

(17) 

(292) 

(1) 

5 

Total capital

6,811 

7,172 

(361) 

(1) Includes lease liabilities, amounts outstanding under credit facilities, tax equity liabilities and current portion of long-term debt.
(2)  The  Corporation  includes  available  cash  and  cash  equivalents  as  a  reduction  in  the  calculation  of  capital,  as  capital  is  managed  internally  and  evaluated  by 
management using a net debt position.  In this regard, these funds may be available and used to facilitate repayment of debt.
(3) The Corporation includes the principal portion of restricted cash on TransAlta OCP bonds because this cash is restricted specifically to repay outstanding debt. 
(4) The Corporation includes the fair value of economic and designated hedging instruments on debt in an asset, or liability, position as a reduction, or increase, in the 
calculation of capital, as the carrying value of the related debt has either increased, or decreased, due to changes in foreign exchange rates.

The Corporation’s overall capital management strategy and its objectives in managing capital are as follows:

The  Corporation  operates  in  a  long-cycle  and  capital-intensive  commodity  business,  and  it  is  therefore  a  priority  to 
maintain a strong financial position that enables the Corporation to access capital markets at reasonable interest rates. 
A. Maintain a Strong Financial Position

Maintaining  a  strong  balance  sheet  also  allows  its  commercial  team  to  contract  the  Corporation’s  portfolio  with  a 
variety of counterparties on terms and prices that are favourable to the Corporation’s financial results and provides the 
Corporation  with  better  access  to  capital  markets  through  commodity  and  credit  cycles.  The  Corporation  has  an 
investment-grade  credit  rating  from  DBRS  (stable  outlook). During  2020,  Moody's  reaffirmed  its  issuer  rating  of  Ba1 
with  a  stable  outlook;  DBRS  reaffirmed  the  Corporation’s  Unsecured  Debt  rating  and  Medium-Term  Notes 
rating of BBB (low), the Preferred Shares rating of Pfd-3 (low) and Issuer Rating of BBB (low) with a stable outlook; and 
Standard and Poor’s reaffirmed the Corporation’s Unsecured Debt rating and Issuer Rating of BB+ with stable outlook. 
The  Corporation  remains  focused  on  strengthening  its  financial  position  and  cash  flow  coverage  ratios.  Credit  ratings 
provide information relating to the Corporation's financing costs, liquidity and operations and affect the Corporation's 
ability to obtain short-term and long-term financing and/or the cost of such financing. 

TransAlta Corporation    |    2020  Annual Integrated Report

F93

TRANSALTA CORPORATION F93

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Key  rating  agencies  assess  TransAlta’s  credit  rating  using  a  variety  of  methodologies,  including  financial  ratios.  The 
methodologies  and  ratios  used  by  rating  agencies  to  assess  our  credit  rating  are  not  publicly  disclosed.  We  have 
developed our own definitions of ratios and targets to help evaluate the strength of our financial position. These metrics 
and ratios are not defined under IFRS and may not be comparable to those used by other entities or by rating agencies. 
These ratios are summarized in the table below:

As at Dec. 31

Funds from operations before interest to adjusted interest coverage (times)

Adjusted funds from operations to adjusted net debt (%)

Adjusted net debt to adjusted comparable earnings before interest,

taxes, depreciation and amortization (times)

Deconsolidated net debt to deconsolidated comparable EBITDA (times)

2020

4.2 

18.3 

3.9 

4.6

2019

4.5 

19.0 

Target

4 to 5

20 to 25

3.9 

4.2

3.0 to 3.5

2.5 to 3.0

Funds from Operations (“FFO”) before Interest to Adjusted Interest Coverage is calculated as FFO less the termination 
payments  for  the  Sundance  B  and  C  PPAs  plus  interest  on  debt,  exchangeable  securities  and  lease  liabilities  (net  of 
capitalized interest) divided by interest on debt, exchangeable securities and lease liabilities (net of capitalized interest) 
plus 50 per cent of dividends paid on preferred shares. The exchangeable preferred shares (see Note 25) are considered 
equity  with  dividend  payments  for  credit  purposes.  FFO  is  calculated  as  cash  flow  from  operating  activities  before 
changes  in  working  capital  and  is  adjusted  for  transactions  and  amounts  that  the  Corporation  believes  are  not 
representative of ongoing cash flows from operations. The Corporation’s goal is to maintain this ratio in a range of four 
to five times.

Adjusted FFO to Adjusted Net Debt is calculated as FFO less the termination payments for the Sundance B and C PPAs 
less  50  per  cent  of  dividends  paid  on  preferred  shares  divided  by  adjusted  net  debt  (current  and  long-term  debt  plus 
exchangeable securities plus 50 per cent of outstanding preferred shares less available cash and cash equivalents less 
principal portion of TransAlta OCP restricted cash and including fair value assets of hedging instruments on debt). The 
exchangeable  preferred  shares  (see  Note  25)  are  considered  equity  with  dividend  payments  for  credit  purposes.  The 
Corporation’s goal is to maintain this ratio in a range of 20 to 25 per cent.

Adjusted Net Debt to Adjusted Comparable EBITDA is calculated as adjusted net debt divided by adjusted comparable 
EBITDA.  Adjusted  comparable  EBITDA  is  calculated  as  earnings  before  interest,  taxes,  depreciation  and  amortization 
and is adjusted for transactions and amounts that the Corporation believes are not representative of ongoing business 
operations as well as the termination payments for the Sundance B and C PPAs. The exchangeable preferred shares (see 
Note 25) are considered equity with dividend payments for credit purposes.  The Corporation’s goal is to maintain this 
ratio in a range of 3.0 to 3.5 times.

Deconsolidated  net  debt  to  deconsolidated  comparable  EBITDA  is  calculated  as  deconsolidated  net  debt  (long-term 
debt,  lease  liabilities  and  exchangeable  debentures  including  current  portion  and  fair  value  (asset)  liability  of  hedging 
instruments  on  debt  plus  50  per  cent  issued  preferred  shares  less  cash  and  cash  equivalents  less  principal  portion  of 
TransAlta OCP restricted cash less TransAlta Renewables long-term debt and lease liabilities including current portion 
less  tax  equity  financing)  divided  by  deconsolidated  comparable  EBITDA  (comparable  EBITDA  less  TransAlta 
Renewables  comparable  EBITDA  less  TA  Cogen  comparable  EBITDA  plus  dividends  received  from  TransAlta 
Renewables plus dividends received from TA Cogen). The exchangeable preferred shares (see Note 25) are considered 
equity with dividend payments for credit purposes. The Corporation's goal is to maintain this ratio in a range of 2.5 to 3.0 
times.

At times, the credit ratios may be outside of the specified ranges while the Corporation executes its conversion to gas 
and growth strategy, but we remain focused on maintaining a strong balance sheet.

Management routinely monitors forecasted net earnings, cash flows, capital expenditures and scheduled repayment of 
debt with a goal of meeting the above ratio targets and to meet dividend and PP&E expenditure requirements.

B. Ensure Sufficient Cash and Credit is Available to Fund Operations, Pay Dividends, Distribute 
For  the  years  ended  Dec.  31,  2020  and  2019,  cash  inflows  and  outflows  are  summarized  below.  The  Corporation 
manages variations in working capital using existing liquidity under credit facilities.
Payments to Subsidiaries’ Non-Controlling Interests, Invest in PP&E and Make Acquisitions

F94

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F94

 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Year ended Dec. 31

Cash flow from operating activities

Change in non-cash working capital

Cash flow from operations before changes in working capital

Dividends paid on common shares

Dividends paid on preferred shares

Distributions paid to subsidiaries’ non-controlling interests

Property, plant and equipment expenditures

Inflow (outflow)

2020

702 

(89)   

613 

(47)   
(39)   
(97)   
(486)   
(56)   

2019

849 

(121)   

728 

(45)   

(40)   

(106)   

(417)   

120 

Increase
(decrease)

(147) 

32 

(115) 

(2) 

1 

9 

(69) 

(176) 

TransAlta maintains sufficient cash balances and committed credit facilities to fund periodic net cash outflows related to 
its business. At Dec. 31, 2020, $1.5 billion (2019 — $1.3 billion) of the Corporation’s credit facilities were fully available.

From  time  to  time,  TransAlta  accesses  capital  markets,  as  required,  to  help  fund  some  of  these  periodic  net  cash 
outflows,  to  maintain  its  available  liquidity,  and  to  maintain  its  capital  structure  and  credit  metrics  within  targeted 
ranges.

Details of the Corporation’s principal operating subsidiaries at Dec. 31, 2020, are as follows:
35. Related-Party Transactions
Country
Subsidiary

Ownership
(per cent)

Principal activity

TransAlta Generation Partnership

TransAlta Cogeneration, L.P.

Canada

Canada

TransAlta Centralia Generation, LLC

US

TransAlta Energy Marketing Corp.

Canada

TransAlta Energy Marketing (U.S.), Inc.

US

TransAlta Energy (Australia), Pty Ltd.

Australia

TransAlta Renewables Inc.

Canada

100

50.01

100

100

100

100

60.1

Generation and sale of electricity

Generation and sale of electricity

Generation and sale of electricity

Energy marketing

Energy marketing

Generation and sale of electricity

Generation and sale of electricity

Associate or joint venture

Country

SP Skookumchuck Investment,  LLC

EMG International, LLC

US

US

Ownership
(per cent)

Principal activity

49

30

Generation and sale of electricity

Wastewater treatment and biogas fuel to generate 
electricity

Transactions between the Corporation and its subsidiaries have been eliminated on consolidation and are not disclosed.  
Associates and joint ventures have been equity accounted for by the Corporation.

Transactions with Key Management Personnel 

TransAlta’s key management personnel include the President and CEO and members of the senior management team 
that  report  directly  to  the  President  and  CEO,  and  the  members  of  the  Board.  Key  management  personnel 
compensation is as follows:

Year ended Dec. 31

Total compensation

Comprised of:

  Short-term employee benefits

  Post-employment benefits

  Termination benefits

  Share-based payments

2020

27 

2019

30 

2018

17 

12 

2 

— 

13 

13 

2 

2 

13 

11 

2 

— 

4 

TransAlta Corporation    |    2020  Annual Integrated Report

F95

TRANSALTA CORPORATION F95

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

In addition to commitments disclosed elsewhere in the financial statements, the Corporation has incurred the following 
additional  contractual  commitments,  either  directly  or  through  its  interests  in  joint  operations.  Approximate  future 
36. Commitments and Contingencies
payments under these agreements are as follows:

2021

2022

2023

2024

2025

2026 and 
thereafter

Total

Natural gas, transportation and 
  other contracts

Transmission

Coal supply and mining
   agreements

Long-term service agreements

Operating leases

Growth

TransAlta Energy Transition Bill

Total

141 

8 

81 

31 

4 

509 

6 

780 

149 

8 

105 

37 

2 

411 

6 

718 

137 

8 

101 

22 

2 

93 

6 

134 

134 

1,353 

2,048 

5 

67 

18 

1 

— 

— 

5 

56 

10 

1 

— 

— 

1 

— 

55 

26 

— 

— 

35 

410 

173 

36 

1,013 

18 

3,733 

369 

225 

206 

1,435 

The  Corporation  has  fixed  price  or  volume  natural  gas  purchase  and  transportation  contracts.  In  addition  to  the 
commitments  shown  above,  upon  closing  the  sale  of  the  Pioneer  Pipeline,  a  15-year  transportation  agreement  will 
A. Natural Gas, Transportation and Other Contracts
provide  an  additional  275  TJ  per  day  of  natural  gas  on  a  firm  basis  by  2023,  bringing  the  total  firm  natural  gas 
transportation contracts to 400 TJ per day by 2023. This agreement would replace the Corporation's existing 15-year 
commitment to purchase 139 TJ per day of natural gas on the Pioneer Pipeline, which remains in place until the closing 
of the Transaction. Other contracts relate to commitments for goods and services.

The Corporation has several agreements to purchase transmission network capacity in the Pacific Northwest. Provided 
certain conditions for delivering the service are met, the Corporation is committed to the transmission at the supplier’s 
B. Transmission
tariff rate whether it is awarded immediately or delivered in the future after additional facilities are constructed.  

Various  coal  supply  and  associated  rail  transport  contracts  are  in  place  to  provide  coal  for  use  in  production  at  the 
Centralia  thermal  facility.  The  coal  supply  agreements  allow  TransAlta  to  take  delivery  of  coal  at  fixed  volumes  with 
C. Coal Supply and Mining Agreements
dates extending to 2025. In 2020, a new rail transportation service contract was entered into and pricing is reflective of 
current market conditions.  As a result, there is an increase in expected rail transportation costs over the service period.

Commitments  related  to  mining  agreements  include  the  Corporation’s  share  of  commitments  for  mining  agreements 
related to its Sheerness joint operation and certain other mining royalty agreements. Some of these commitments have 
been reduced due to the accelerated plans to eliminate coal as a fuel source at the Sheerness facility by the end of 2021.

TransAlta has various service agreements in place, primarily for inspections and repairs and maintenance that may be 
required on natural gas facilities, coal facilities and turbines at various wind facilities.
D. Long-Term Service Agreements

Includes  lease  commitments  not  recognized  under  IFRS  16  and  lease  commitments  that  have  not  yet  commenced, 
mainly related to buildings, vehicles and land. 
E. Operating Leases

Prior  to  the  adoption  of  IFRS  16,  operating  lease  expenses  were  recognized  as  incurred  in  the  statement  of  earnings. 
During the year ended Dec. 31, 2018, $8 million was recognized as an expense in respect of operating leases. Sublease 
payments  received  during  2020  were  $2  million  (2019  and  2018  —  were  less  than  $1  million).  No  contingent  rental 
payments were made in respect of operating leases.

F96

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F96

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Commitments for growth relate to the following projects: conversion to gas and repowering Sundance Unit 5, Kaybob 
cogeneration project, Windrise project and any final costs associated with the Big Level and Antrim wind projects. Refer 
F. Growth
to Note 4 for further details on these  projects.

As part of the TransAlta Energy Transition Bill signed into law in the State of Washington and the subsequent MOA, we 
have committed to fund US$55 million in total over the remaining life of the Centralia coal plant to support economic 
G. TransAlta Energy Transition Bill Commitments
and community development, promote energy efficiency and develop energy technologies related to the improvement 
of the environment. The MoA contains certain provisions for termination and in the event of the termination and certain 
circumstances,  this  funding  or  part  thereof  would  no  longer  be  required.  As  of  Dec.  31,  2020,  the  Corporation  has 
funded  approximately  US$41  million  of  the  commitment,  which  is  recognized  in  other  assets  in  the  Consolidated 
Statements of Financial Position.

A  significant  portion  of  the  Corporation’s  electricity  and  thermal  production  are  subject  to  PPAs  and  long-term 
contracts.  The  majority  of  these  contracts  include  terms  and  conditions  customary  to  the  industry  in  which  the 
H. Other
Corporation operates. The nature of commitments related to these contracts includes: electricity and thermal capacity, 
availability  and  production  targets;  reliability  and  other  plant-specific  performance  measures;  specified  payments  for 
deliveries during peak and off-peak time periods; specified prices per MWh; risk sharing of fuel costs; and retention of 
heat rate risk.

TransAlta is occasionally named as a party in various claims and legal and regulatory proceedings that arise during the 
normal course of its business. TransAlta reviews each of these claims, including the nature of the claim, the amount in 
I. Contingencies
dispute or claimed, and the availability of insurance coverage. There can be no assurance that any particular claim will be 
resolved in the Corporation’s favour or that such claims may not have a material adverse effect on TransAlta. Inquiries 
from regulatory bodies may also arise in the normal course of business, to which the Corporation responds as required.

I. Line Loss Rule Proceeding 
The Corporation has been participating in a line loss rule proceeding before the AUC. The AUC determined that it has 
the ability to retroactively adjust line loss charges going back to 2006 and directed the AESO to recalculate loss factors 
for 2006 to 2016 and issue a single invoice charging or crediting market participants for the difference in losses charges.  
The AESO submitted a review and variance application of this decision to implement a “pay-as-you-go” invoicing scheme 
rather than issue a single invoice. The AUC ruled on the AESO’s request and approved a three-period invoice process  
(2006-2009,  2010-2013  and  2014-2016).  The  total  liability  for  the  loss  charges  was  $25  million;  however,  due  to 
payments made (and received) for the first two invoices, only $8 million of the total liability remains outstanding. The 
AESO issued the first invoice on Oct. 22, 2020 for $6 million, which was paid by Dec. 30, 2020. The second invoice was 
issued on Dec. 21, 2020, for $11 million. The third invoice is expected in March 2021.

In November 2020, the AESO sought direction from the AUC with respect to interest payments on the loss  charges and 
the  AUC ruled in January 2021 that simple interest rather than compound interest would apply to the loss charges.

II. FMG Disputes
The  Corporation  is  currently  engaged  in  a  dispute  with  Fortescue  Metals  Group  Ltd.  ("FMG")  as  a  result  of  FMG's 
purported termination of the South Hedland PPA. TransAlta sued FMG, seeking payments of amounts invoiced and not 
paid under the South Hedland PPA, as well as a declaration that the PPA is valid and in force. FMG, on the other hand, 
seeks  a  declaration  that  the  PPA  was  lawfully  terminated.  This  matter  has  been  rescheduled  to  proceed  to  trial 
beginning May 3, 2021, instead of June 15, 2020.

The Corporation had a second dispute involving FMG's claims against TransAlta related to the transfer of the Solomon 
facility  to  FMG.  FMG  claimed  certain  amounts  related  to  the  condition  of  the  facility  while  TransAlta  claimed  certain 
outstanding  costs  that  should  be  reimbursed.  The  dispute  was  settled  and  discontinued  in  the  Supreme  Court  of 
Western Australia on Sept. 9, 2020. 

TransAlta Corporation    |    2020  Annual Integrated Report

F97

TRANSALTA CORPORATION F97

 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

III. Mangrove Claim
On April 23, 2019, Mangrove commenced an action in the Ontario Superior Court of Justice, naming the Corporation, 
the  incumbent  members  of  the  Board  of  Directors  of  the  Corporation  on  such  date  and  Brookfield  BRP  Holdings 
(Canada),  as  defendants.  Mangrove  is  seeking  to  set  aside  the  Brookfield  Investment.  TransAlta  believes  the  claim  is 
wholly lacking in merit and is taking all steps to defend against the allegations. This matter has been rescheduled and the 
three-week trial will begin on April 19, 2021.

IV. Keephills 1 Stator Force Majeure
The  Balancing  Pool  and  ENMAX  Energy  Corporation  ("ENMAX")  are  seeking  to  set  aside  an  arbitration  award  on  the 
basis  that  they  did  not  receive  a  fair  hearing.  The  Alberta  Court  of  Queen’s  Bench  ("ABQB")  dismissed  the  Balancing 
Pool and ENMAX’s allegations of unfairness on June 26, 2019. The Balancing Pool and ENMAX, however, sought leave 
to appeal the ABQB’s decision at the Court of Appeal, which was granted on Feb. 13, 2020. The appeal is scheduled to be 
heard on April 8, 2021. TransAlta believes that the Court of Appeal will affirm the ABQB decision that the arbitration 
proceeding was fair.

V. Keephills 1 Superheater Force Majeure
Keephills  Unit  1  was  taken  offline  from  March  17,  2015  to  May  17,  2015,  as  a  result  of  a  large  leak  in  the  secondary 
superheater. TransAlta Generation Partnership claimed force majeure under the Keephills PPA. ENMAX, the PPA buyer 
under the PPA at the time, did not dispute the force majeure, but the Balancing Pool did, seeking to recover $12 million 
in capacity payment charges it paid to TransAlta while the unit was offline. The Balancing Pool argued and won in the 
Courts  that  it  has  a  right  under  the  PPA  to  commence  an  arbitration,  independent  of  the  PPA  buyer,  ENMAX.  An 
arbitration for this dispute has commenced and is set to be heard for seven days starting Dec. 6, 2021.

VI. Sundance A Decommissioning
TransAlta filed an application with the AUC seeking payment from the Balancing Pool for TransAlta’s decommissioning 
costs for Sundance A, including its proportionate share of the Highvale mine. The Balancing Pool and Utilities Consumer 
Advocate are participating as interveners because they take issue with the decommissioning costs claimed by TransAlta.  
Due to various factors including the COVID-19 pandemic and significant information requests from the Balancing Pool, 
the application has been delayed.  While a hearing date has not been set, the application will likely be heard in late 2021 
or early 2022. TransAlta expects to receive payment from the Balancing Pool for its decommissioning costs; however, 
the amount that the AUC will award is uncertain.

VII. Hydro Power Purchase Arrangement ("Hydro PPA") Emission Performance Credits
The Balancing Pool claims to be entitled to emissions performance credits ("EPCs"), valued at approximately $17 million 
per year, earned by the Hydro facilities under the Carbon Competitiveness Incentive Regulation from 2018-2020. Refer to 
Note 2(A) and 2(F)(IV) for the accounting policies on these credits. The dispute is based on the ownership of the EPCs as 
a result of a change in law provision under the Hydro PPA and that TransAlta is benefiting from the purported change in 
law. TransAlta has not received any benefit from the EPCs and has not recognized any benefit from the EPCs within its 
financial  statements.  TransAlta  believes  that  the  Balancing  Pool  has  no  rights  to  these  credits.  An  arbitration  has 
commenced and will be likely set down for a hearing sometime in early 2022.  

VIII. Direct Assigned Capital Deferral Account  ("DACDA") Application
AltaLink Management Ltd. ("AltaLink") filed an application before the AUC to recover its 2016-2018 DACDA costs (the 
"Proceeding") incurred for the 240 kV line upgrades project in the Edmonton region (the “Upgrades Project”). TransAlta 
is a secondary applicant in the Proceeding because it owns a portion of the 1043L Line located on Enoch Cree Nation 
(“ECN”) Reserve that was a part of the Upgrades Project. AltaLink and TransAlta sought to have their costs ($91 million 
for  AltaLink  and  $22  million  for  TransAlta)  approved  by  the  AUC  as  reasonable  and  prudent.  The  ECN  and  the 
Consumers'  Coalition  of  Alberta  are  registered  participants  in  the  Proceeding.  The  AUC  rendered  its  decision  in  the 
Proceeding on Dec. 10, 2020, and disallowed 15 per cent (approximately $3 million) of TransAlta’s portion. TransAlta 
believes  that  the  AUC  made  errors  by  disallowing  15  per  cent  of  its  costs  and  therefore  filed  a  permission  to  appeal 
application with the Court of Appeal (the “PTA”) and a review and variance application with the AUC (the “R&V”).  The 
PTA will be adjourned until the R&V process is completed.

F98

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F98

Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

The Corporation has eight reportable segments as described in Note 1. 
37. Segment Disclosures
A. Description of Reportable Segments
The  following  tables  provides  each  segment's  results  in  the  format  that  management  organizes  its  segments  to  make 
operating  decisions  and  assess  performance.  For  internal  reporting  purpose,  the  earnings  information  from  the 
Corporation's  investment  in  Skookumchuck  has  been  presented  in  the  Wind  and  Solar  segment  on  a  proportionate 
basis. Information on a proportionate basis reflects the Corporation's share of Skookumchuck's statement of earnings 
on  a  line-by-line  basis.  Proportionate  financial  information  is  not,  and  is  not  intended  to  be,  presented  in  accordance 
with  IFRS.  Under  IFRS,  the  investment  in  Skookumchuck  has  been  accounted  for  as  a  joint  venture  using  the  equity 
method.  The  table  below  also  shows  the  reconciliation  of  the  total  segmented  results  to  the  statement  of  earnings 
reported under IFRS. 

I. Earnings Information
B. Reported Segment Earnings (Loss) and Segment Assets

Year ended Dec. 31, 
2020

Hydro

Wind
and
Solar(1)

North
American
Gas(2)

Australian
Gas

Alberta

Thermal(3) Centralia(3)

Energy

Marketing Corporate

Total

Equity 
accounted 
investments(1)

IFRS 
Financials

Revenues

  152 

  332 

217 

158 

619 

497 

122 

7 

  2,104 

(3)   

2,101 

Fuel, carbon
   compliance and
   purchased power

8 

25 

Gross margin

  144 

  307 

66 

151 

10 

148 

37 

53 

28 

  136 

2 

2 

— 

— 

8 

— 

75 

  110 

— 

— 

— 

— 

49 

46 

— 

2 

— 

54 

— 

5 

Operations,
   maintenance and
   administration

Depreciation and 
 amortization

Asset impairment 

Taxes, other than 
 income taxes

Net other operating 
 expense (income)

Operating income 
 (loss)

Equity income from 
associate(1)

Finance lease income

Net interest expense

Foreign exchange 
 loss

Gain on sale of assets 
 and other

Earnings before 
 income taxes

573 

46 

131 

270 

75 

15 

(11)   

32 

43 

— 

— 

— 

73 

(434)   

— 

2 

— 

— 

279 

218 

— 

122 

7 

  968 

— 

  1,136 

— 

968 

(3)   

1,133 

60 

30 

80 

  472 

— 

472 

105 

7 

5 

— 

41 

— 

— 

2 

— 

— 

— 

25 

  655 

(1)   

— 

1 

84 

33 

— 

(11)   

— 

— 

— 

654 

84 

33 

(11) 

90 

(106)   

(97)   

(2)   

(99) 

— 

— 

— 

— 

— 

7 

(239)   

17 

9 

(303)   

1 

— 

1 

— 

— 

— 

1 

7 

(238) 

17 

9 

(303) 

(1) Skookumchuck has been included on a proportionate basis in the Wind and Solar segment.  
(2) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
Refer to Note 4(K) for further details. 
(3) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.

TransAlta Corporation    |    2020  Annual Integrated Report

F99

TRANSALTA CORPORATION F99

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

Australian
Gas

Alberta

Thermal(2) Centralia(2)
571 

816 

Energy

Marketing Corporate

Total

Year ended Dec. 31, 2019

Hydro

Wind
and
Solar

Revenues

  156 

  312 

North
American
Gas(1)
209 

Fuel, carbon compliance and 
   purchased power

Gross margin

7 

16 

  149 

  296 

74 

135 

Operations, maintenance and 
  administration

36 

50 

Depreciation and amortization  

32 

  124 

Asset impairment (reversal)

2 

— 

Gain on termination of 
   Keephills 3 coal rights
   contract (Note 4(R))

Taxes, other than income taxes  

Termination of Sundance B and
   C PPAs (Note 9)

Net other operating expense 
   (income)

— 

3 

— 

— 

— 

8 

— 

44 

41 

— 

— 

1 

— 

(10)   

(1)   

76 

  124 

— 

— 

50 

6 

Operating income (loss)

Finance lease income

Net interest expense

Foreign exchange loss

Gain on sale of assets and 
   other

Earnings before income taxes

160 

9 

151 

37 

48 

— 

— 

— 

— 

— 

66 

— 

570 

246 

138 

233 

15 

(88)   

13 

(56)   

(40)   

31 

— 

416 

155 

67 

83 

(10)   

— 

3 

— 

— 

12 

— 

(1) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
Refer to Note 4(K) for further details. 
(2) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.

Alberta

Thermal(2) Centralia(2)
442 

912 

Energy

Marketing Corporate

Total

Year ended Dec. 31, 2018

Hydro

Wind
and
Solar

Revenues

  156 

  282 

North
American
Gas(1)
232 

Fuel, carbon compliance and 
   purchased power

Gross margin

6 

17 

  150 

  265 

96 

136 

Operations, maintenance and 
  administration

38 

50 

Depreciation and amortization  

30 

  110 

— 

3 

— 

— 

79 

— 

12 

8 

— 

(6)   

91 

— 

Asset impairment

Taxes, other than income taxes  

Termination of Sundance B and
   C PPAs (Note 9)

Net other operating income

Operating income (loss)

Finance lease income

Net interest expense

Foreign exchange loss

Gain on sale of assets

Earnings before income taxes

48 

43 

— 

1 

— 

— 

44 

8 

Australian
Gas

165 

8 

157 

37 

49 

— 

— 

— 

— 

71 

— 

666 

246 

171 

241 

38 

13 

(157)   

(41)   

(19)   

— 

314 

128 

61 

74 

— 

5 

— 

— 

(12)   

— 

(1) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
Refer to Note 4(K) for further details.
(2) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.

F100

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F100

129 

— 

129 

30 

2 

— 

— 

— 

— 

— 

97 

— 

(6)   

2,347 

(6)   

1,086 

— 

1,261 

73 

27 

18 

— 

1 

— 

2 

(121)   

— 

475 

590 

25 

(88) 

29 

(56) 

(49) 

335 

6 

(179) 

(15) 

46 

193 

67 

— 

67 

24 

2 

— 

— 

— 

— 

41 

— 

(7)   

2,249 

(7)   

1,100 

— 

1,149 

86 

25 

23 

1 

— 

— 

(135)   

— 

515 

574 

73 

31 

(157) 

(47) 

160 

8 

(250) 

(15) 

1 

(96) 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

II. Selected Consolidated Statements of Financial Position Information

As at Dec. 31, 2020

Hydro

Wind
and
Solar

North
American
Gas(2)

Australian
Gas

Alberta

Thermal(1) Centralia(1)

Energy

Marketing Corporate

PP&E

467 

2,005 

382 

421 

2,271 

260 

Right-of-use assets

Intangible assets

Goodwill

6 

4 

258 

55 

159 

175 

1 

32 

— 

4 

34 

— 

53 

31 

— 

— 

5 

— 

— 

— 

7 

30 

16 

22 

41 

— 

As at Dec. 31, 2019

Hydro

Wind
and
Solar

North
American
Gas(2)

Australian
Gas

Alberta

Thermal(1) Centralia(1)

Energy

Marketing Corporate

PP&E

Right-of-use assets

Intangible assets

Goodwill

469 

1,947 

392 

489 

2,540 

352 

6 

5 

258 

56 

173 

176 

— 

2 

— 

4 

37 

— 

68 

41 

— 

— 

6 

— 

1 

— 

9 

30 

17 

12 

45 

— 

Total

5,822 

141 

313 

463 

Total

6,207 

146 

318 

464 

(1) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.
(2) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
Refer to Note 4(K) for further details. 

III. Selected Consolidated Statements of Cash Flows Information
Additions to non-current assets are as follows:

Year ended Dec. 31, 2020

Hydro

Additions to non-current assets:

Wind
and
Solar

North
American
Gas(2)

Australian
Gas

Alberta

Thermal(1) Centralia(1)

Energy

Marketing Corporate

Total

 PP&E

 Intangible assets

22 

— 

174 

— 

39 

— 

10 

— 

200 

1 

28 

— 

— 

— 

13 

13 

486 

14 

Year ended Dec. 31, 2019

Hydro

Additions to non-current assets:

Wind
and
Solar

North
American
Gas(2)

Australian
Gas

Alberta

Thermal(1) Centralia(1)

Energy

Marketing Corporate

Total

 PP&E

 Intangible assets

23 

— 

229 

— 

36 

— 

6 

— 

114 

2 

8 

— 

— 

— 

1 

12 

417 

14 

Year ended Dec. 31, 2018

Hydro

Additions to non-current assets:

Wind
and
Solar

North
American
Gas(2)

Australian
Gas

Alberta

Thermal(1) Centralia(1)

Energy

Marketing Corporate

Total

 PP&E

 Intangible assets

16 

— 

117 

— 

21 

— 

6 

— 

101 

3 

14 

— 

— 

— 

2 

17 

277 

20 

(1) The Canadian Coal segment was renamed Alberta Thermal and the US Coal segment was renamed Centralia in the third quarter of 2020.
(2) This segment was previously known as the Canadian Gas segment but renamed with the acquisition of the US cogeneration facility in the second quarter of 2020. 
Refer to Note 4(K) for further details. 

TransAlta Corporation    |    2020  Annual Integrated Report

F101

TRANSALTA CORPORATION F101

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Notes to Consolidated Financial Statements

Notes to Consolidated Financial Statements

IV. Depreciation and Amortization on the Consolidated Statements of Cash Flows 
The reconciliation between depreciation and amortization reported on the Consolidated Statements of Earnings (Loss) 
and the Consolidated Statements of Cash Flows is presented below:

Year ended Dec. 31

Depreciation and amortization expense on the Consolidated Statements of 
  Earnings (Loss)

Depreciation included in fuel, carbon compliance and purchased power (Note 6)

Depreciation and amortization on the Consolidated Statements of Cash Flows

2020

2019

2018

654 

144 

798 

590 

119 

709 

574 

136 

710 

I. Revenues
C. Geographic Information
Year ended Dec. 31

Canada

US

Australia

Total revenue

II. Non-Current Assets

Property, plant and
equipment

2020

4,661 

737 

424 

2019

4,854 

863 

490 

5,822 

6,207 

As at Dec. 31

Canada

US

Australia

Total

2020

1,227 

716 

158 

2019

1,460 

727 

160 

2018

1,573 

511 

165 

2,101 

2,347 

2,249 

Right-of-use assets

Intangible assets

Other assets

Goodwill

2020

107 

30 

4 

141 

2019

109 

33 

4 

146 

2020

185 

94 

34 

313 

2019

213 

68 

37 

318 

2020

2019

74 

61 

71 

75 

47 

76 

206 

198 

2020

418 

45 

— 

463 

2019

418 

46 

— 

464 

During the year ended Dec. 31, 2020, no sales to any one customer was greater than 10 per cent of the Corporation’s 
total revenue (2019 — one customer within the Alberta Thermal and Hydro segments represented 11 per cent of total 
D. Significant Customer
revenue).

F102

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION F102

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 1

Exhibit 1

(Unaudited)
Exhibit 1 
The information set out below is referred to as “unaudited” as a means of clarifying that it is not covered by the audit 
opinion  of  the  independent  registered  public  accounting  firm  that  has  audited  and  reported  on  the  Consolidated 
Financial Statements.

To the Financial Statements of TransAlta Corporation

EARNINGS COVERAGE RATIO

The following selected financial ratio is calculated for the year ended Dec. 31, 2020:

Earnings coverage on long-term debt supporting the Corporation’s Shelf Prospectus

(0.46) times

Earnings coverage on long-term debt on a net earnings basis is equal to net earnings before interest expense and income taxes, divided by interest expense including 
capitalized interest.

TransAlta Corporation    |    2020  Annual Integrated Report

F103

TRANSALTA CORPORATION F103

Eleven-Year Financial and Statistical Summary
(in millions of Canadian dollars, except where noted)
(in millions of Canadian dollars, except where noted)

Eleven-Year Financial and Statistical Summary

Year ended Dec. 31

2020 

2019 

2018 

Financial Summary

STATEMENT OF EARNINGS

Revenues

Operating income

Net earnings (loss) attributable to common shareholders

STATEMENT OF FINANCIAL POSITION

Total assets

Current portion of long-term debt, net of cash and cash equivalents

Credit facilities, long-term debt and finance lease obligations

Non-controlling interests

Preferred shares
Equity attributable to common shareholders(1)
Fair value (asset) liability of hedging instruments on debt(1)
Total capital(2)

CASH FLOWS

Cash flow from operating activities

Cash flow from (used in) investing activities

COMMON SHARE INFORMATION (per share)

Net earnings (loss)
Comparable earnings(1)
Dividends declared on common share
Book value per common share (at year-end)(1)

Market price:

High

Low

Close (Toronto Stock Exchange at Dec. 31)

RATIOS (percentage except where noted)
Adjusted net debt to total capital(1)
Adjusted net debt to total capital excluding non-recourse debt(1)
Adjusted net debt to adjusted comparable EBITDA(1,3,4) (times)
Return on equity attributable to common shareholders(1)
Comparable return on equity attributable to common shareholders(1)
Return on capital employed(1)
Comparable return on capital employed(1)
Earnings coverage (times)(1)
Dividend payout ratio based on FFO(1,4)
Comparable EBITDA(1,3,4) (in millions of Canadian dollars)
Dividend coverage(1,4) (times)
Dividend yield(1)
Adjusted FFO to adjusted net debt(1,4)
FFO before interest to adjusted interest coverage(1,4) (times)

Weighted average common shares for the year (in millions)

Common shares outstanding at Dec. 31 (in millions)

STATISTICAL SUMMARY

Number of employees
Gross installed capacity (MW)(5)
Alberta Thermal and Centralia
Gas (Canadian and Australian)(6)

Renewables (wind, solar and hydro)

Equity investments

Total generating capacity

Total generation production (GWh)

2,101 

(99)   

(336)   

9,747 

(598)   

3,256 

1,084 

942 

1,410 

(2)   

6,811 

702 

(687)   

(1.22)   

n/a

0.22 

5.13 

11.23  

5.32  

9.67  

53.5

36.7

3.9 

(30.3) 

n/a

(1.7) 

n/a

(0.5)   

7.0 

927 

15.6 

1.7 

18.3

4.2 

275 

270 

2,347 

335 

52 

9,508 

102 

2,699 

1,101 

942 

2,019 

(7)   

7,172 

849 

(512)   

0.18 

n/a

0.12 

7.14 

10.14 

5.50 

9.28 

49.9  

40.7  

3.9  

3.3  

n/a

4.3  

n/a

1.5 

6.6  

984  

18.6  

1.7  

19.0  

4.5  

283  

277  

2,249 

160 

(248) 

9,428 

59 

3,119 

1,137 

942 

2,055 

(10) 

7,275 

820 

(394) 

(0.86) 

n/a

0.20 

7.16 

7.90 

5.44 

5.59 

49.7 

39.4 

3.6 

(15.8) 

n/a

0.7 

n/a

0.2 

6.1 

1,123 

18.3 

2.9 

20.8 

4.8 

287 

285 

1,476 

1,543 

1,883 

4,206 

1,424 

2,498 

137 

8,265 

24,980 

4,569 

1,395 

2,421 

— 

8,385 

29,071 

4,571 

1,395 

2,308 

— 

8,273 

28,409 

Financial data presented is based on IFRS. Prior-year figures that appear within the MD&A have been restated to conform with the current year’s presentation. All other prior-year figures have 
not been restated. 
(1) These items are not defined and have no standardized meaning under IFRS. Periods 
for which the non-IFRS measure was not previously disclosed have not been calculated.  
After 2016, comparable earnings measures are no longer being calculated or reported on.

(2) Total capital for 2014 to 2010 has been revised to align with the 2015 calculation 
methodology.

244

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION 200

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Eleven-Year Financial and Statistical Summary

Eleven-Year Financial and Statistical Summary

2017 

2016 

2015 

2014 

2013 

2012 

2011 

2010 

2,307 

138 

(190)   

2,397 

478 

117 

2,267 

148 

(24)   

10,304 

10,996 

10,947 

433 

2,960 

1,059 

942 

2,384 

(30)   

7,748 

626 

87 

(0.66)

n/a

0.16

8.28

8.50

6.88

7.45

49.5

41.8

3.6

(10.0)

n/a

2.1

n/a

0.6

4.3

334 

3,722 

1,152 

942 

2,569 

(163)   

8,556 

744 

(327)   

0.41

0.13

0.30

8.92

7.54

3.76

7.43

51.0

44.2

3.8

5.4

1.7

5.3

4.4

1.7

8.1

1,062 

1,144 

14.1

2.1

20.4

4.3

288 

288 

11.1

4.0

16.3

3.9

288 

288 

33 

4,408 

1,029 

942 

2,419 

(190)   

8,641 

432 

(573)   

(0.09)

(0.17)

0.72

8.52

12.34

4.13

4.91

54.6  

50.2  

5.4

(1.2)

(2.3)

4.6

3.0

1.5

30.0

867 

3.3

14.7

14.3

3.7

280 

284 

2,623 

442 

141 

9,833 

708 

3,305 

594 

942 

2,342 

(96)   

7,795 

796 

(292)   

0.52

0.25

0.83

8.52

14.94

9.81

10.52

56.3 

54.1 

4.2

6.3

3.0

5.8

5.1

1.7

26.4

1,036 

5.7

7.9

16.9

3.8

273 

275 

2,292 

195 

(71)   

9,624 

175 

4,130 

517 

781 

2,125 

(16)   

7,712 

765 

(703)   

(0.27)

0.31

1.16

7.92

16.86

12.91

13.48

60.7

58.7 

4.6  

(3.2)

3.7

2.8

5.2

0.8

43.1

1,023 

6.3  

8.6

15.2

3.7

264 

268 

2,210 

(214)   

(615)   

9,503 

582 

3,610 

330 

— 

3,018 

50 

7,590 

520 

(1,048)   

(2.62)

0.50

1.16

8.78

21.37

14.11

15.12

61.0

59.0

4.6 

(25.9)

4.9

(3.1)

5.3

(1.0)

25.1

1,015 

4.7 

7.7

16.7

3.3

235 

255 

2,618 

645 

290 

9,780 

284 

3,721 

358 

— 

3,274 

32 

7,669 

690 

(608)   

1.31

1.05

1.16

12.08

23.24

19.45  

21.02

52.5

60.0

3.8 

10.6

8.4

8.3

7.0

2.7

24.0

1,044 

3.5

5.5

20.1

4.4

222 

224 

2,673 

487 

255 

9,635 

202 

3,823 

431 

— 

3,120 

41 

7,617 

838 

(765) 

1.16

0.97

1.16

12.85

23.98

19.61 

21.15

53.1

50.7

— 

9.6

8.0

6.6

6.0

2.2

40.0

955 

4.0

5.5

19.6

4.6

219 

220 

2,228 

2,341 

2,380 

2,786 

2,772 

2,084 

2,235 

2,389 

5,131 

1,403 

2,289 

— 

8,823 

36,900 

5,131 

1,482 

2,334 

— 

8,947 

38,157 

5,126 

1,405 

2,350 

— 

8,881 

40,673 

5,111 

1,531 

2,204 

— 

8,846 

45,002 

(3)  In  2019  and  onwards  comparable  EBITDA  was  adjusted  to  exclude  the  impact  of 
unrealized mark-to-market gains or losses. 2018 and 2017 amounts were revised. 
(4)  2016  and  2015  amounts  were  revised  due  to  other  revisions  to  EBITDA  or  FFO 
measures in the MD&A. 

5,111 

1,779 

2,202 

396 

9,488 

4,551 

1,731 

2,058 

390 

8,730 

4,325 

1,567 

1,974 

390 

8,256 

4,688 

1,648 

1,950 

390 

8,676 

42,482 

38,750 

41,012 

48,614 

(5)  2012  to  2020  are  gross  installed  capacity,  which  reflects  the  basis  of  underlying 
results. Prior-year figures are as previously reported. 
(6) Includes finance lease receivables. 

TransAlta Corporation    |    2020  Annual Integrated Report

245

TRANSALTA CORPORATION 201

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
Eleven-Year Financial and Statistical Summary

Eleven-Year Financial and Statistical Summary

Adjusted  net  debt  to  total  capital  =  [long-term  debt  and  lease  liabilities  including  current  portion  +  exchangeable 
securities - 100 per cent exchangeable preferred shares + fair value (asset) liability of hedging instruments on debt + 50 
Ratio Formulas 
per cent issued preferred shares and exchangeable preferred shares - cash and cash equivalents - principal portion of 
TransAlta OCP restricted cash / long-term debt and lease liabilities including current portion + exchangeable securities 
+  fair  value  (asset)  liability  of  hedging  instruments  on  debt  +  non-controlling  interests  +  equity  attributable  to 
shareholders - cash and cash equivalents - principal portion of TransAlta OCP restricted cash] 

Adjusted  net  debt  to  adjusted  comparable  EBITDA  =  long-term  debt  and  lease  liabilities  including  current  portion  + 
exchangeable  securities  -  100  per  cent  exchangeable  preferred  shares  +  fair  value  (asset)  liability  of  hedging 
instruments  on  debt  +  50  per  cent  issued  preferred  shares  and  exchangeable  preferred  shares  -  cash  and  cash 
equivalents - principal portion of TransAlta OCP restricted cash / comparable EBITDA - PPA Termination Payments

Return  on  equity  attributable  to  common  shareholders  =  net  earnings  (loss)  attributable  to  common  shareholders 
excluding  gain  on  discontinued  operations  or  earnings  on  a  comparable  basis  /  equity  attributable  to  common 
shareholders excluding Accumulated Other Comprehensive Income (“AOCI”)

Return  on  capital  employed  =  earnings  (loss)  before  income  taxes  +  net  interest  expense  -  net  earnings  (loss) 
attributable to non-controlling interests / total capital - AOCI 

Earnings  coverage  =  net  earnings  attributable  to  shareholders  +  income  taxes  +  net  interest  expense  /  50  per  cent 
dividends paid on preferred shares + interest on debt - interest income

Dividend payout ratio = common share dividends declared / FFO - 50 per cent dividends paid on preferred shares 

Dividend  coverage  =  FFO  -  cash  dividends  paid  on  preferred  shares  +  change  in  non-cash  operating  working  capital 
balances / cash dividends paid on common shares 

Dividend yield = dividends paid per common share / current year’s close price 

Adjusted FFO to adjusted net debt = FFO - PPA Termination Payments + 100 per cent interest paid on exchangeable 
preferred shares - 50 per cent dividends paid on preferred shares and exchangeable preferred shares / long-term debt 
and lease liabilities including current portion + exchangeable securities - 100 percent exchangeable preferred shares + 
fair  value  (asset)  liability  of  hedging  instruments  on  debt  +  50  per  cent  issued  preferred  shares  and  exchangeable 
preferred shares - cash and cash equivalents - principal portion of TransAlta OCP restricted cash

Adjusted  FFO  before  interest  to  adjusted  interest  coverage  =  FFO  -  PPA  Termination  payments  +  interest  on  debt, 
exchangeable  securities  and  lease  liabilities  -  interest  income  -  capitalized  interest  /  interest  on  debt,  exchangeable 
securities  (excluding  interest  on  exchangeable  preferred  shares)  and  lease  liabilities  -  interest  income  +  50  per  cent 
dividends paid on preferred shares and exchangeable preferred shares

246

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION 202

  
Plant Summary

As at  Dec. 31, 
2020

Plant Summary

Thermal
10 facilities

Facility

Sundance, AB
Keephills, AB
Keephills 3, AB
Sheerness, AB
Centralia, WA

Total Thermal
Gas
12 facilities

Total Gas
Wind &
 Battery Storage
25 facilities

Total Wind
Solar
1 facility
Total Solar
Hydro
27 facilities

Total Hydro
Total

Poplar Creek, AB(9)
Fort Saskatchewan, AB
Sarnia, ON*
Ottawa, ON
Windsor, ON
Ada, MI (4)
Parkeston, WA*(11)
Southern Cross, WA*(10)(11)
South Hedland, WA* (11)

Summerview 1, AB*
Summerview 2, AB*
Ardenville, AB*
Blue Trail and Macleod Flats, AB*
Castle River, AB* (12)
McBride Lake, AB*
Soderglen, AB*
Cowley North, AB*
Sinnott, AB*
WindCharger battery storage, AB*
Melancthon, ON* (13)
Wolfe Island, ON*
Kent Breeze, ON*
Kent Hills, NB* (14)
Le Nordais, QC*
New Richmond, QC*
Wyoming Wind, WY*
Lakeswind, MN*
Big Level, PA*
Antrim, NH*
Skookumchuck, WA (4)

Mass Solar, MA* (15)

Brazeau, AB
Bighorn, AB
Spray, AB
Ghost, AB
Rundle, AB
Cascade, AB
Kananaskis, AB
Bearspaw, AB
Pocaterra, AB
Horseshoe, AB
Barrier, AB
Taylor, AB*
Interlakes, AB
Belly River, AB*
Three Sisters, AB
Waterton, AB*
St. Mary, AB*
Upper Mamquam, BC*
Pingston, BC*
Bone Creek, BC*
Akolkolex, BC (8)*
Ragged Chute, ON*
Misema, ON*
Galetta, ON*
Appleton, ON*
Moose Rapids, ON*
Skookumchuck, WA

Installed 
capacity(M
W)(1)

Ownership 
(%)

Owned 
capacity 
(MW)(1)(2)

 100  %  
 100  %  
 100  %  
 25  %  
 100  %  

 100  %  
 30  %  
 100  %  
 50  %  
 50  %  
 100  %  
 50  %  
 100  %  
 100  %  

 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 50  %  
 50  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 83  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 49  %  

 100  %  

 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 50  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  
 100  %  

1,213 
790 
463 
800 
1,340 
4,606 
230 
118 
499 
74 
72 
29 
110 
245 
150 
1,527 
68 
66 
69 
69 
44 
75 
71 
20 
7 
10 
200 
198 
20 
167 
98 
68 
140 
50 
90 
29 
137 
1,694 
21 

21 
355 
120 
112 
54 
50 
36 
19 
17 
15 
14 
13 
13 
5 
3 
3 
3 
2 
25 
45 
19 
10 
7 
3 
2 
1 
1 
1 
948 
8,796 

1,213 
790 
463 
200 
1,340 
4,006 
230 
35 
499 
37 
36 
29 
55 
245 
150 
1,316 
68 
66 
69 
69 
44 
38 
35 
20 
7 
10 
200 
198 
20 
139 
98 
68 
140 
50 
90 
29 
67 
1,523 
21 

21 
355 
120 
112 
54 
50 
36 
19 
17 
15 
14 
13 
13 
5 
3 
3 
3 
2 
25 
23 
19 
10 
7 
3 
2 
1 
1 
1 
926 
7,791 

Region

Revenue source

Western Canada
Western Canada
Western Canada
Western Canada
United States

Merchant
Alberta PPA(3)/ Merchant (5)
Merchant
Alberta PPA / Merchant (6)
LTC(7) / Merchant

Contract expiry 
date

— 
2020 
— 
2020 
2020-2025 (8)

Western Canada
Western Canada
Eastern Canada
Eastern Canada
Eastern Canada
United States
Australia
Australia
Australia

Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Eastern Canada
Eastern Canada
Eastern Canada
Eastern Canada
Eastern Canada
Eastern Canada
United States
United States
United States
United States
United States

LTC  
LTC  
LTC
LTC/ Merchant
LTC/ Merchant

LTC  
LTC  
LTC  
LTC  

Merchant
Merchant
Merchant
Merchant
Merchant

LTC  

Merchant
Merchant
Merchant
Merchant
LTC
LTC
LTC
LTC
LTC
LTC
LTC
LTC
LTC
LTC
LTC

2030 
2029 
2022-2025
2020-2033
2031 
2026 
2026 
2038 
2042 

— 
— 
— 
— 
— 
2024 
— 
— 
— 
— 
2026-2028
2029
2031
2035
2033
2033
2028
2034
2034
2039
2040

United States

LTC

2032-2035

Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Western Canada
Eastern Canada
Eastern Canada
Eastern Canada
Eastern Canada
Eastern Canada
United States

Alberta PPA  
Alberta PPA  
Alberta PPA  
Alberta PPA  
Alberta PPA  
Alberta PPA  
Alberta PPA  
Alberta PPA  
Merchant
Alberta PPA  
Alberta PPA  
Merchant
Alberta PPA  
Merchant
Alberta PPA  
Merchant
Merchant

LTC  
LTC  
LTC  
LTC  
LTC  
LTC  
LTC  
LTC  
LTC  
LTC  

2020 
2020 
2020 
2020 
2020 
2020 
2020 
2020 
— 
2020 
2020 
— 
2020 
— 
2020 
— 
— 
2025 
2023 
2031 
2045 
2029 
2027 
2030 
2030 
2030 
2020 

* TransAlta Renewables Inc. facility.
(1) Megawatts are rounded to the nearest whole number; columns may not add due to 
rounding. 
(2) Includes 100% of TransAlta Renewables assets. As of Dec. 31, 2020, TransAlta owns 
approximately 60% of the outstanding shares of TransAlta Renewables.
(3)  PPA refers to Power Purchase Arrangement. Alberta PPAs expired on Dec. 31, 2020.  
As of Jan. 1, 2021 the facilities  are operating as merchant.
(4) Effective Jan. 1, 2021, facility has been sold to TransAlta Renewables.
(5) Merchant capacity includes a 12 MW uprate on units 1 and 2, which began operation 
in the second quarter of 2012.
(6)  Merchant capacity includes a 10 MW uprate completed in the first quarter of 2016.

(7) LTC refers to Long-Term Contract.
(8) Contract is in place until 2025; however Centralia Unit 1 was retired from service  
effective Dec. 31, 2020, and capacity decreased to 670 MW on Jan. 1, 2021. 
(9) The Poplar Creek plant is operated by Suncor and ownership of the facility will 
transfer to Suncor in 2030.
(10) Comprised of four facilities.
(11) Gas/diesel.
(12) Includes seven individual turbines at other locations.
(13) Comprised of two facilities.
(14) Comprised of three facilities.
(15) Comprised of four ground-mounted projects and four roof-top projects.

TransAlta Corporation    |    2020  Annual Integrated Report

247

TRANSALTA CORPORATION 203

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Sustainability Performance Indicators

Sustainability Performance Indicators

Environment Health & Safety Management Systems
Corporate Statistics
Facilities with ISO 14001 and/or OHSAS 18001-based management systems 
(percentage)(1)
Management system audits(2)

2020

2019

2018

97

8

97 

12 

97 

17 

Environmental Performance (3)

2020

2019

2018

Resource or energy use(4)
Coal combustion (tonnes)

Natural gas combustion (GJ)

Diesel combustion (L)

Gasoline consumption: vehicle (L)

Diesel consumption: vehicle (L)

Propane consumption: vehicle (L)

Electricity: building operations (MWh)

Natural gas: building operations (GJ)

Propane: building operations (L)

Kerosene: building operations (L)
Total resource or energy use (GJ)(5)

Greenhouse gas emissions(6)
Carbon dioxide (tonnes CO2e) √
Methane (tonnes CO2e) √
Nitrous oxide (tonnes CO2e) √
Sulphur hexafluoride (tonnes CO2e)
Total greenhouse gas emissions(7) (tonnes CO2e) √
Greenhouse gas emission intensity(8) (tonnes CO2e / MWh) √
Scope 1 emissions (% of total GHG emissions)

Scope 2 emissions (% of total GHG emissions)

Scope 1 emissions reported to national regulatory bodies (%)

Air emissions(9)
Total sulphur dioxide emissions (tonnes) √
Sulphur dioxide emission intensity(10) (kg / MWh) √
Total nitrogen oxide emissions (tonnes) √
Nitrogen oxide emission intensity(10) (kg / MWh) √
Total particulate matter emissions (tonnes) √
Particulate matter emission intensity(10) (kg / MWh) √
Total mercury emissions (kilograms) √
Mercury emission intensity(10) (mg / MWh) √

6,637,000 

9,092,000 

  10,001,000 

  83,046,000 

  77,007,000 

  62,355,000 

6,954,000 

  10,179,000 

935,000 

1,099,000 

9,553,000 

1,408,000 

  10,976,000 

  21,531,000 

  38,361,000 

5,000 

188,000 

48,000 

190,000 

48,000 

96,000 

226,000 

52,000 

177,000 

84,000 

75,000 

273,000 

71,000 

170,000 

116,000 

  279,027,000 

  345,609,000 

  358,435,000 

  16,264,000 

  20,436,000 

  20,596,000 

36,000 

80,000 

110 

51,000 

111,000 

2,000 

69,000 

115,000 

10 

  16,380,000 

  20,599,000 

  20,781,000 

0.67

99 

1 

100 

12,000 

0.49

21,000 

0.88

5,000 

0.20

60

2.34

0.75

99 

1 

100 

16,000 

0.58

26,000 

0.96

8,000 

0.28

60 

2.36

0.77

99 

1 

100 

19,000 

0.73

29,000 

1.08

8,000 

0.32

70 

2.51

248

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION 204

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Environmental Performance (continued)

2020

2019

2018

Sustainability Performance Indicators

Sustainability Performance Indicators

Water management(11)
Water withdrawal –water utility/municipality/customer (million m3)
Water withdrawal –surface water (million m3)
Water withdrawn –all sources (million m3) √
Water discharge –all sources (million m3) √
Water consumption (million m3) √
Water intensity (m3/MWh)(12) √

Waste management
Non-hazardous(13)
Landfill (tonnes) √

Landfill (L) √
Ash disposal: mine (tonnes) (14)√
Ash disposal: lagoon (tonnes) (15) √
Recycled (tonnes) (16) √
Recycled (L) √
Reuse (tonnes)(17)  √
Storage (tonnes) √

Compostable (tonnes)  √

Hazardous(18)
Landfill (tonnes) √

Landfill (L) √

Recycled (tonnes) √

Recycled (L) √

Land use and reclamation

Land used in mining activities – disturbed (cumulative hectares) √

Land used in mining activities – reclaimed (cumulative hectares) √

Land reclamation (% of land disturbed) √

Land used in mining activities: disturbed minus reclaimed (hectares) √

Land used by facilities, offices and equipment (hectares) √

— 

240

240

200

40

1.50

— 

260 

260 

220 

40 

1.55

— 

250 

250 

210 

40 

1.40

1,000 

39,000 

408,000 

98,000 

6,000 

1,000 

35,000 

641,000 

117,000 

2,000 

2,000 

68,000 

715,000 

277,000 

1,000 

1,869,000 

3,605,000 

3,722,000 

533,000 

53,000 

10 

746,000 

740,000 

— 

N/A

— 

N/A

30 

58,000 

20 

60 

53,000 

80 

10 

45,000 

170 

  20,220,000 

  18,931,000 

  16,257,000 

12,600 

4,800 

38 

7,700 

3,900 

12,600 

4,800 

38 

7,700 

3,900 

12,400 

4,700 

38 

7,700 

3,900 

Total land use (cumulative hectares) √

11,700 

11,700 

11,700 

Environmental incidents(19)
Total environmental incidents √

Significant environmental incidents

Regulatory non-compliance environmental incidents
Environmental enforcement actions(20)
Environmental fines ($ thousands)

Spills(21)
Volume of significant spills (m3)

8 

6 

2 

— 

— 

4

9 

3 

6 

1 

4 

530 

7 

1 

6 

1 

6 

5 

TransAlta Corporation    |    2020  Annual Integrated Report

249

TRANSALTA CORPORATION 205

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Sustainability Performance Indicators

Social Performance

Workplace practices

Employees

Number of full-time employees

Number of part-time employees

Number of contingent employees
Employees represented by independent trade union organizations(22) (%)
Voluntary employee turnover rate(23) (%)

Diversity

Women in workforce (% of all employees)

Women in senior management (%)

Women on Board of Directors (%)

Health and safety
Health and safety enforcement actions(24)
Health and safety fines ($ thousands)

Employee & contractor fatalities √
Lost-time incident (LTI) (absence from work)(25) √
Medical aid (MA) incidents (no absence from work)(26) √
Restricted Work Injuries (RWI) incidents (no absence from work)(27) √
First Aid (FA) incidents (no absence from work)(28) √
Total injuries to employees & contractors √
Exposure hours (29) 

Sustainability Performance Indicators

2020

2019

2018

1,476 

1,392 

16

68

41

9.05

21

43

45

— 

— 

— 

5

9

2

17

33

1,543 

1,471 

18 

54 

45 

1,883 

1,810 

22 

51 

50 

13.59 

20.22 

20 

50 

33 

3 

— 

— 

5 

7 

3 

8 

23 

20 

50 

40 

— 

— 

— 

1 

12 

12 

23 

48 

3,948,000 

4,108,000 

5,014,000 

Total Injury Frequency (TIF) (employees and contractors)(30) √
Total Recordable Injury Frequency (TRIF) (employees and contractors)(31)

1.67

0.81

1.12

0.73

1.91

1.00

Community relations
Community investments ($ millions)(32)

2.2

2.1

2.4

√ 2020 data has been third-party assured to a limited assurance level by Ernst & Young LLP.
Please see "Discussion and Notes on Numbers" for footnote explanations. 

250

TransAlta Corporation    |    2020  Annual Integrated Report

TRANSALTA CORPORATION 206

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Sustainability Performance Indicators

Sustainability Performance Indicators

Alignment of Sustainability Performance Indicators with Best Practice 
The following outlines our sustainability or ESG performance indicator alignment with key criteria of the Global 
Reporting Initiative ("GRI") and Sustainability Accounting Standards Board ("SASB").
Sustainability Reporting Frameworks

Environment Health & Safety Management Systems

GRI Standards

SASB Standards

Facilities with ISO 14001 and/or OHSAS 18001-based management systems 
(percentage)
Management system audits

Environmental Performance

GRI Standards

SASB Standards

Resource or energy use

Coal combustion (tonnes)

Natural gas combustion (GJ)

Diesel combustion (L)

Gasoline consumption: vehicle (L)

Diesel consumption: vehicle (L)

Propane consumption: vehicle (L)

Electricity: building operations (MWh)

Natural gas: building operations (GJ)

Propane: building operations (L)

Kerosene: building operations (L)

Total resource or energy use (GJ)

Greenhouse gas emissions

Carbon dioxide (tonnes CO2e)
Methane (tonnes CO2e)
Nitrous oxide (tonnes CO2e)
Sulphur hexafluoride (tonnes CO2e)
Total greenhouse gas emissions (tonnes CO2e)

Greenhouse gas emission intensity (tonnes CO2e / MWh)
Scope 1 emissions (% of total GHG emissions)

Scope 2 emissions (% of total GHG emissions)

Scope 1 emissions reported to national regulatory bodies (%)

Air emissions

Total sulphur dioxide emissions (tonnes)

Sulphur dioxide emission intensity (kg / MWh)

Total nitrogen oxide emissions (tonnes)

Nitrogen oxide emission intensity (kg / MWh)

Total particulate matter emissions (tonnes)

Particulate matter emission intensity (kg / MWh)

Total mercury emissions (kilograms)

Mercury emission intensity (mg / MWh)

302-1

302-1

302-1

302-1

302-1

302-1

302-1

302-1

302-1

302-1

302-1

302-1

305-1, 305-2

305-1, 305-2

305-1, 305-2

305-1, 305-2

305-1, 305-2

305-4

305-1

305-2

305-7

305-7

305-7

305-7

IF-EU-110a.1

IF-EU-110a.1

IF-EU-110a.1

IF-EU-110a.1

IF-EU-110a.1

IF-EU-110a.1

IF-EU-110a.1

IF-EU-120a.1

IF-EU-120a.1

IF-EU-120a.1

IF-EU-120a.1

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TRANSALTA CORPORATION 207

Sustainability Performance Indicators

Sustainability Performance Indicators

Environmental Performance (continued)

GRI Standards

SASB Standards

Water management
Water withdrawal –water utility/municipality/customer (million m3)
Water withdrawal – surface water (million m3)
Water withdrawn –all sources (million m3)
Water discharge – all sources (million m3)
Water consumption (million m3)
Water intensity (m3/MWh)

Waste management

Non-hazardous

Landfill (tonnes)

Landfill (L)

Ash disposal: mine (tonnes)

Ash disposal: lagoon (tonnes)

Recycled (tonnes)

Recycled (L)

Reuse (tonnes)

Storage (tonnes)

Hazardous

Landfill (tonnes)

Landfill (L)

Recycled (tonnes)

Recycled (L)

Land use and reclamation

Land used in mining activities – disturbed (cumulative hectares)

Land used in mining activities – reclaimed (cumulative hectares)

Land reclamation (% of land disturbed)

Land used in mining activities: disturbed minus reclaimed (hectares)

Land used by plants, offices and equipment (hectares)

Total land use (cumulative hectares)

Environmental incidents

Total environmental incidents

Significant environmental incidents

Regulatory non-compliance environmental incidents

Environmental enforcement actions

Environmental fines ($ thousands)

Spills
Volume of significant spills (m3)

IF-EU-140a.1

IF-EU-140a.1

IF-EU-140a.1

IF-EU-140a.1

IF-EU-150a.1

303-3

303-3

303-3

303-4

303-5

306-2

306-2

306-2

306-2

306-2

306-2

306-2

306-2

304-1

304-3

304-3

304-1

304-1

304-1

307-1

307-1

307-1

307-1

307-1

306-3

252

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TRANSALTA CORPORATION 208

Social Performance

Workplace practices

Employees

Number of full-time employees

Number of part-time employees

Number of contingent employees

Sustainability Performance Indicators

Sustainability Performance Indicators

GRI Standards

SASB Standards

102-7

Employees represented by independent trade union organizations (%)

102-41

Voluntary employee turnover rate (%)

Diversity

Women in workforce (% of all employees)

Women in senior management (%)

Women on Board of Directors (%)

Health and safety

Health and safety enforcement actions

Health and safety fines ($ thousands)

Employee & contractor fatalities

Lost-time incident (LTI) (absence from work)

Medical aid (MA) incidents (no absence from work)

First Aid (FA) incidents (no absence from work) 

Restricted Work Injuries (RWI) incidents (no absence from work)

Total injuries to employees & contractors

Exposure hours

Total Injury Frequency (TIF) (employees and contractors)

Total Recordable Injury Frequency (TRIF) (employees and contractors)

Community relations

Community investments ($ millions)

405-1

405-1

405-1

403-9

403-9

403-9

403-9

403-9

403-9

403-9

403-9

403-9

201-1

IF-EU-320a.1

IF-EU-320a.1

IF-EU-320a.1

IF-EU-320a.1

IF-EU-320a.1

IF-EU-320a.1

IF-EU-320a.1

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253

TRANSALTA CORPORATION 209

Sustainability Performance Indicators

Sustainability Performance Indicators

TransAlta continually strives to improve the accuracy and scope of our sustainability performance data. We continually 
review  our  processes  and  controls  relating  to  the  measurement  and  calculation  of  key  sustainability  data  annually. 
Discussion and Notes on Numbers
Several footnotes appear throughout the statistical summary and are intended to provide clarity on specific boundary 
conditions, changes in methodology and definitions. For questions or clarity on any key performance indicators, please 
contact us at sustainability@transalta.com.

1.

2.
3.

4.

5.

6.

7.

8.
9.

10.

ISO 14001 and ISO 18001 are the world’s most recognized standards for Environmental Management and Health and Safety Management systems. TransAlta has ownership 
in 75 facilities.
Internal audits are conducted against ISO management systems, regulatory frameworks and the Alberta Certificate of Recognition standard.
Historical environmental performance  figures  have  been  rounded  based  on the following methodology: i) All environmental data are rounded to the nearest one thousand 
except  where  values  are  <100,  in  which  case  they  are  rounded  to  the  nearest  10;  ii)  Land  use  data,  which  is  smaller  in  magnitude  compared  with  other  environmental 
indicators, is rounded to the nearest 100 to represent a more accurate picture of management and progress.
Energy  use  is  calculated  and  reported  from  TransAlta-operated  facilities,  following  the  same  approach  we  use  for  greenhouse  gas  (GHG)  emissions  reporting,  which  is  the 
application of an ‘Operational Control’ boundary as per guidance from the Greenhouse Gas Protocol: A Corporate Accounting and Reporting Standard.
A number of 2018 and 2019 historical energy use volumes from our wind & solar, hydro, Alberta thermal and natural gas business segments were revised in 2020. Minor 
adjustments were made to 2019 volumes for natural gas combustion, diesel combustion, propane use (for building operations and vehicle use), diesel use for vehicles, gasoline 
use for vehicles, natural gas use for buildings and electricity use for building operations. Minor adjustments were made to 2018 volumes for diesel use for vehicles, gasoline use 
for vehicles, propane use for building operations, natural gas use for buildings and electricity use for building operations. A number of 2019 changes were a result of accrual 
adjustments from the previous year.  Changes  to 2018  and  2019  data were also a result of process improvement changes - in 2020 we incorporated a number of remote 
offices  into  our  reporting  boundary.  Although  these  offices  are  small  and  associated  energy  use  is  minor,  these  revisions  did  adjust  historical  totals  for  gasoline  and  diesel 
vehicle use, electricity, gas and propane use in building operations in 2018 and 2019. These adjustments also resulted in a change to our reported total energy use volumes in 
2018 and 2019.
GHG emissions are calculated and reported from TransAlta-operated facilities in line with carbon compliance regulations from the geographic jurisdiction where the facility is 
located.  For  GHG  emissions  that  are  not  calculated  using  jurisdictional  carbon  compliance  guidance  we  follow  guidance  from  the  Greenhouse  Gas  Protocol:  A  Corporate 
Accounting  and  Reporting  Standard  (specifically  ‘Setting  Organizational  Boundaries:  Operational  Control’  methodology).  As  per  the  operational  control  methodology, 
TransAlta reports 100 per cent of GHG emissions from facilities at which we are the operator. GHG emissions include emissions from stationary combustion, transportation 
use, building use and fugitive emissions. We report both scope 1 and scope 2 emissions. An estimate of our scope 3 emissions can be found in our 2020 MD&A and our 2020 
CDP climate change report. Global warming potentials can vary with respect to regional compliance guidance. We compile our corporate GHG inventory using our business 
segment GHG calculations. The Clean Energy Regulator in Australia amended global warming potentials in August of 2020 and the use of global warming potentials in our 
Australia Gas GHG calculations differ from the rest of our fleet as a result of these amendments. Applying harmonized global warming potentials across our fleet would result 
in a minor variance to our overall calculated GHG totals.
Gross GHG emissions or gross carbon dioxide equivalent (CO2e) emissions is the sum of carbon dioxide, methane, nitrous oxide and sulphur hexafluoride (SF6). Consequently, 
the sum of scope 1 and 2 emissions will equate to gross CO2e emissions or gross GHG emissions. Minor adjustments were made to historical 2018 and 2019 GHG emissions 
data primarily from our wind & solar, hydro and natural gas business segments as a result of adjusted historical energy use volumes. A minor adjustment was made to 2019 
SF6 emissions as a result of an internal discrepancy at our Sarnia facility. An SF6  leak from late in 2019 was not reported in our system until 2020. 
GHG emission intensity is calculated by dividing total operational emissions by 100 per cent of production (MWh) from operated facilities, irrespective of financial ownership. 
Air emissions are calculated and reported from TransAlta-operated facilities, following the same approach we use for greenhouse gas (GHG) emissions reporting, which is the 
application of an ‘Operational Control’ boundary as per guidance from the GHG Protocol: A Corporate Accounting and Reporting Standard. Air emissions are expressed in 
tonnes, except for mercury emissions, which are represented in kilograms. Total particulate matter emissions (TPM) include both PM2.5 and PM10. Historical 2018 and 2019 
NOx incurred minor revisions in 2020 to include NOx emissions from our Highvale facility. The revision increased 2018 NOx from 28,000 to 29,000 tonnes. Minor revisions 
were made to 2018 and 2019 air emissions data at our Highvale facility and natural gas facilities in Ontario. The 2019 changes were as a result of accrual adjustments from 
the previous year. Changes to 2018 and 2019 data were also a result of process improvement changes - including conducting more precise calculations in 2020, such as for 
TPM emissions due to road dust at our Highvale facility.
Air emission intensities are calculated by dividing total operational emissions by 100 per cent of production (MWh) from operated facilities, irrespective of financial ownership. 
Historical adjustments to 2018 and 2019 air emissions data (see Note 9) resulted in minor adjustments to air emission intensity data. 

17.

13.

14.
15.
16.

11. Water  use  is  calculated  and  reported  from  TransAlta-operated  facilities,  following  the  same  approach  we  use  for  greenhouse  gas  (GHG)  emissions  reporting,  which  is  the 
application of an ‘Operational Control’ boundary as per guidance from the GHG Protocol: A Corporate Accounting and Reporting Standard. Total water consumed is measured 
by total water withdrawal minus water discharge. Water is used primarily for cooling by our thermal power plants. Evaporative losses from cooling ponds and cooling towers 
account for the majority of consumptive loss. The water lost to evaporation is not returned directly to the water body, but the water remains in the hydrologic cycle. Water use 
at our new Ada facility was not reported in 2020 as it was acquired in August of 2020. The integration of water for ESG reporting will occur in 2021. Given the size of Ada, 29 
MW (relatively small), we anticipate a minor impact to overall water consumption. Minor revisions were made to 2018 and 2019 water use data at our Ottawa facility, head 
office, and wind & solar business segment due to accruals and internal discrepancies, which did not affect reported totals. Leinster 2018 and 2019 water data were revised as 
a  result  of  an  internal  discrepancy  affecting  the  withdrawal  amount,  but  reported  totals  were  not  affected.  Centralia  2019  water  data  was  revised  in  2020  as  a  result  of 
identified discrepancies, which resulted in overreported raw water intake or water withdrawal for sustainability reporting. The issue was specific to 2019 data only. Water 
from  our  Centralia  facility  is  also  reported  to  the  Department  of  Ecology  (“DOE”)  in  Washington  State.  There  were  no  issues  with  our  data  submitted  to  the  DOE,  as  the 
information generated for sustainability reporting followed a separate data collection process. As a result, Centralia 2019 water withdrawal was revised from approximately 
52  million  m3  to  26  million  m3.  The  Centralia  business  unit  has  performed  a  full  review  of  its  water  reporting  process  and  our  corporate  function  will  review  its  internal 
assurance process to support avoidance of any future reoccurrence of this event.

12. Water  intensity  is  calculated  by  dividing  total  operational  water  consumption  (m3)  by  100  per  cent  of  production  (MWh)  from  operated  facilities,  irrespective  of  financial 
ownership. Water intensity was not tracked for our Ada facility in 2020 as it was acquired in August of 2020 but will be tracked in 2021. Historical adjustments to 2019 
water use data (see Note 11) resulted in adjustments to 2019 water intensity data. 
Non-hazardous waste includes, but is not limited to, the disposal of water treatment chemicals, coal refuse (including ash byproducts), metals, paper, cardboard and building 
materials.  Adjustments  were  made  to  historical  2019  landfill  (tonnes)  and  landfill  (L)  waste  volumes  to  reflect  accrued  volumes  from  2019.  Adjustments  were  made  to 
historical 2018 recycled (tonnes) and recycled (L). Changes to 2018 and 2019 data were also a result of process improvement changes - in 2020 we incorporated a number of 
remote offices into our reporting boundary. 
Ash disposal: mine is fly ash and bottom ash from coal production, which is treated and then returned to its original source, the mine, for landfill/disposal. 
Ash disposal: lagoon is fly ash and bottom ash from Keephills coal production, which is treated and then sent to ash lagoons for disposal.
In 2020, we revised our categorization of waste. As a result our reported 2018 and 2019 non-hazardous recycled (tonnes) were adjusted. Specifically, volumes of fly ash waste 
from our Sundance and Keephills facilities were recategorized to non-hazardous reuse (tonnes). This decreased our total for non-hazardous recycled (tonnes). 
In 2020, we revised our categorization of waste. As a result our reported 2018 and 2019 non-hazardous reuse (tonnes) were adjusted. Specifically, volumes of fly ash waste 
from our Sundance and Keephills facilities were recategorized as non-hazardous recycled (tonnes) to non-hazardous reuse (tonnes). This increased our total for non-hazardous 
recycled (tonnes). In 2020, an internal discrepancy was noted in 2018 non-hazardous recycled (tonnes) at our Sundance facility and the value was changed from 178.6 tonnes 
to 178,558 tonnes. This revision resulted in an increase to non-hazardous reuse (tonnes) totals. We define reuse as waste that we are able to sell to a third party for use.
Hazardous  wastes  can  be  harmful  to  people,  plants,  animals  or  the  environment,  either  in  the  short  or  the  long  term,  and  TransAlta  is  required  in  all  of  its  operating 
jurisdictions to follow proper procedures for landfill/recycling of these materials. Historical 2018 and 2019 hazardous recycled (L) and landfill (tonnes) waste volumes were 
adjusted in 2020 to reflect data system errors at our gas and renewables business unit. Historical recycled (tonnes) from 2018 were reported as 200 tonnes in 2019 due to 
rounding. The actual amount was 166 tonnes. In 2020, we have reported this volume as 170 tonnes to follow our new rounding methodology. 
Environmental incidents are separated into two categories: significant environmental incidents and regulatory non-compliance environmental incidents. We define regulatory 
non-compliance environmental incidents as events that involved a non-compliance event but did not have an impact on the environment. For example, a technical issue with a 
computer system for gathering real-time data could cause us to be out of compliance with local regulation or our EMS, but there is no direct consequence for the physical 
environment. All other events are captured as significant environmental incidents and these are where we deem there to be a material impact to the environment.
Environmental enforcement actions are a violation or non-compliance to regulations or exceedance of limits in company operating approvals that result in enforcement action 
including stop work orders, fines or suspension of operating approvals.
Spills generally happen in low environmental impact areas and are almost always contained and fully recovered. It is extremely rare that we experience large spills, which could 
adversely impact the environment and the Corporation.
TransAlta has approximately 600 unionized workers working primarily in our operational business units.
Voluntary turnover is aligned with our Human Resources voluntary turnover reporting methodology. As per this methodology, voluntary turnover is any full-time, part-time or 
contingent employee initiated exit, excluding retirement. Summer students and temporary workers are not considered within voluntary turnover.
Health and safety enforcement actions are a violation or non-compliance to regulations or exceedance of limits in company operating approvals that result in enforcement 
action including stop work orders, fines or suspension of operating approvals.
Lost-time injuries (LTIs) are injuries that resulted in the worker being away from work beyond the day of the injury.

25.
26. Medical aids (MAs) are injuries that resulted in medical treatment beyond first aid.
27.
28.
29.
30.
31.
32.

Restricted work injuries (RWIs) are injuries that resulted in the worker being unable to perform all normally scheduled and assigned work activities.
First Aids (FAs) are an injury that is limited to treatment of minor scratches, cut, scrapes, burns, splinters, etc. which does not require further medical treatment. 
Exposure hours are total hours worked by all TransAlta employees and contractors.
Total Injury Frequency (TIF) tracks the total number of injuries (medical aids, lost-time injuries, restricted works and first aids) per 200,000 hours worked.
Total Recordable Injury Frequency (TRIF) measures restricted work, medical aid and lost-time injuries per 200,000 hours worked.
Cumulative of donations and sponsorship totals in the respective calendar year. This investment figure does not include donations from our employees.

22.
23.

21.

19.

18.

20.

24.

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TRANSALTA CORPORATION 210

Independent Practitioner’s Assurance Report

Independent Practitioner's Assurance Report

Carbon dioxide emissions (tonnes CO2e)

Scope of EY Engagement
To the Board of Directors and Management of TransAlta Corporation (“TransAlta”)
We have been engaged by TransAlta to perform a ‘limited assurance engagement’, as defined by International Standards 
on  Assurance  Engagements,  here  after  referred  to  as  the  engagement,  over  selected  sustainability  performance 
indicators as reported in  TransAlta’s Annual Integrated Report (the “Report”) for the calendar year ending December 
31, 2020. The scope of our engagement, as agreed with management, included the following performance indicators: 
▪
▪ Methane emissions (tonnes CO2e)
▪
▪
▪
▪
▪
▪ Mercury emissions and emission intensity (kg, mg/MWh)
▪ Waste management – Non-hazardous:

Nitrous oxide emissions (tonnes CO2e)
Total greenhouse gas emissions and emissions intensity (tonnes CO2e, tonnes CO2e/MWh)
Sulphur dioxide emissions and emission intensity (tonnes, kg/MWh)
Nitrogen oxide emissions and emission intensity (tonnes, kg/MWh)
Particulate matter emissions and emission intensity (tonnes, kg/MWh)

▪
▪
▪
▪
▪

Landfill (tonnes, L)
Ash disposal: mine, lagoon (tonnes)
Recycled (tonnes, L)
Reuse (tonnes)
Storage (tonnes)

▪ Waste management – Hazardous:

▪
▪

Landfill (tonnes, L)
Recycled (tonnes, L)
▪ Water withdrawal (million m3)
▪ Water discharge (million m3)
▪ Water consumption and consumption intensity (million m3, m3/MWh)
▪ Mining land use – disturbed (Ha)
▪ Mining land use – reclaimed (Ha)
▪ Mining land use – % of land disturbed
▪ Mining land use – disturbed minus reclaimed (Ha)
Plants, offices and equipment land use (Ha)
▪
Total land use (Ha)
▪
Employee and contractor fatalities
▪
Lost-time incidents for employees and contractors
▪
▪ Medical aids for employees and contractors
▪
▪
▪
▪
▪

Restricted work injuries for employees and contractors
First aids for employees and contractors
Total TIF injuries to employees and contractors
Total injury frequency for employees and contractors (injuries/200,000 hours)
Total environmental incidents

The selected performance indicators are collectively referred to as the “Subject Matter” and are presented under the 
section Sustainability Performance Indicators of the Report on pages 248 to 250.

Other  than  as  described  in  the  preceding  paragraph,  which  sets  out  the  scope  of  the  engagement,  our  assurance 
engagement does not extend to any other information included in, or linked to from, the Report and accordingly, we do 
not express a conclusion on this other information.

Criteria applied by TransAlta
In preparing the Subject Matter, TransAlta applied relevant guidance in accordance with industry standards and as well 
as internally and externally developed criteria (together, the “Criteria”). The internally and externally developed criteria 
are identified in the Report on pages  251  to 253.  The  internally developed Criteria were specifically designed for  the 
preparation of the Report. As a result, the Subject Matter information may not be suitable for another purpose.

TransAlta's Responsibilities
TransAlta’s management is responsible for selecting the Criteria and for presenting the Subject Matter in accordance 
with  that  Criteria,  in  all  material  respects.  This  responsibility  includes  establishing  and  maintaining  internal  controls, 
maintaining  adequate  records  and  making  estimates  that  are  relevant  to  the  preparation  of  the  Subject  Matter,  such 
that it is free from material misstatement, whether due to fraud or error.

EY's Responsibilities
Our  responsibility  is  to  express  a  conclusion  on  the  presentation  of  the  Subject  Matter  based  on  evidence  we  have 
obtained.

We conducted our engagement in accordance with the International Standard for Assurance Engagements Other Than 
Audits or Reviews of Historical Financial Information (‘ISAE 3000’).  This standard requires that we plan and perform our 
engagement  to  obtain  limited  assurance  about  whether,  in  all  material  respects,  the  Subject  Matter  is  presented  in 
accordance with the Criteria, and to issue a report. The nature, timing, and extent of the procedures selected depend on 
our judgment, including an assessment of the risk of material misstatement, whether due to fraud or error.

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Independent Practitioner’s Assurance Report

Independent Sustainability Assurance Statement

We  believe  that  the  evidence  obtained  is  sufficient  and  appropriate  to  provide  a  basis  for  our  limited  assurance 
conclusions.

Our independence and quality control
We have complied with the relevant rules of professional conduct / code of ethics applicable to the practice of public 
accounting and related to assurance engagements, issued by various professional accounting bodies, which are founded 
on  fundamental  principles  of  integrity,  objectivity,  professional  competence  and  due  care,  confidentiality,  and 
professional behavior.

The firm applies Canadian Standard on Quality Control 1, Quality Control for Firms that Perform Audits and Reviews of 
Financial Statements, and Other Assurance Engagements, and accordingly maintains a comprehensive system of quality 
control  including  documented  policies  and  procedures  regarding  compliance  with  ethical  requirements,  professional 
standards, and applicable legal and regulatory requirements.

Description of procedures performed
Procedures performed in a limited assurance engagement vary in nature and timing from, and are less in extent, than for 
a reasonable assurance engagement. Consequently, the level of assurance obtained in a limited assurance engagement 
is substantially lower than the assurance that would have been obtained had a reasonable assurance engagement been 
performed. Our procedures were designed to obtain a limited level of assurance on which to base our conclusion and do 
not provide all the evidence that would be required to provide a reasonable level of assurance.

Although we considered the effectiveness of management’s internal controls when determining the nature and extent 
of  our  procedures,  our  assurance  engagement  was  not  designed  to  provide  assurance  on  internal  controls.  Our 
procedures did not include testing controls or performing procedures relating to checking aggregation or calculation of 
data within IT systems. A limited assurance engagement consists of making inquiries, primarily of persons responsible 
for preparing the Subject Matter and related information, and applying analytical and other appropriate procedures.

Our procedures included: 
▪

Inquiries of a selection of management to gain an understanding of TransAlta’s processes, policies and controls in
place related to the Subject Matter;
Inquiries  of  relevant  staff  who  are  responsible  for  the  Subject  Matter  including,  where  relevant,  observing  and
inspecting systems and processes for data aggregation and reporting;
Evaluating  the  accuracy  of  calculations  performed,  on  a  sample  basis,  through  analytical  procedures  and  limited
reperformance; 
Assessing risk of material misstatement due to fraud or errors relating to the selected performance indicators; and,
Evaluating the presentation of the Subject Matter in the Report, including consistency of the Subject Matter.

▪

▪

▪
▪

We also performed such other procedures as we considered necessary in the circumstances.  

Inherent limitations
Non-financial information, such as the Subject Matter, is subject to more inherent  limitations than financial information, 
given the more qualitative characteristics of the subject  matter and the methods used for determining such information. 
The  absence  of  a  significant  body  of  established  practice  on  which  to  draw  allows  for  the  selection  of  different  but 
acceptable  evaluation  techniques  which  can  result  in  materially  different  evaluation  and  can  impact  comparability 
between entities and over time.

Moreover, our scope of work did not include expressing conclusions in relation to:
▪

The  materiality,  completeness  or  accuracy  of  data  sets  or  information  relating  to  areas  other  than  the  selected
performance indicators, and any site-specific information;

▪ Management’s forward-looking statements; and,
▪

Any comparisons made by TransAlta against historical data.

Emphasis of matter – Restated comparative information
We draw attention to Notes 11, 16 and 17 on page 254, which explains that certain comparative information presented 
for the year ended December 31, 2020 has been restated. Our conclusion is not modified in respect of this matter.

Conclusion
Based on our procedures and the evidence obtained, nothing has come to our attention that causes us to believe that the 
selected performance indicators as reported in the Report for year-end December 31st, 2020 are not prepared, in all 
material respects, in accordance with the Criteria.

March 2, 2021 
Calgary, Canada

256

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TRANSALTA CORPORATION 212

Shareholder Information

Shareholder Information

Service
Special Services for Registered Shareholders
Direct deposit for dividend payments
Account consolidations

Description

Automatically have dividend payments deposited to your bank account

Eliminate costly duplicate mailings by consolidating account registrations

Address changes and share transfers

Receive tax splits and dividends without the delays resulting from address and ownership 
changes

Date
Stock Splits and Share Consolidations
May 8, 1980
Feb. 1, 1988

Events

December 31, 1992

Stock split
Stock split(1)
Reorganization - TransAlta Utilities shares exchanged for TransAlta Corporation shares(2) 1:1

The valuation date value of common shares owned on Dec. 31, 1971, adjusted for stock splits, is $4.54 per share. 
(1) The adjusted cost base for shares held on Jan. 31, 1988, was reduced by $0.75 per share following the Feb. 1, 1988, share split. 
(2) TransAlta Utilities Corporation became a wholly owned subsidiary of TransAlta Corporation as a result of this reorganization.

Dividends are paid quarterly as determined by the Board. Dividends on our common shares are at the discretion of the 
Board. In determining the payment and level of future dividends, the Board considers our financial performance, results 
Dividend Declaration for Common Shares
of  operations,  cash  flow  and  needs  with  respect  to  financing  our  ongoing  operations  and  growth,  balanced  against 
returning capital to shareholders. The Board continues to focus on building sustainable earnings and cash flow growth.

Payment Date
Common Share Dividends Declared in 2020
April 1, 2020
July 1, 2020

March  2, 2020

Record Date

June 1, 2020

Oct.1, 2020

Jan. 1, 2021

April 1, 2021

Sept. 1, 2020

Dec. 1, 2020

March 1, 2021

Ex-Dividend Date

Feb. 28, 2020

May 29, 2020

Aug. 31, 2020

Nov. 30, 2020

Feb.  26, 2021

Dividend

$0.0425

$0.0425

$0.0425

$0.0425

$0.0450

TransAlta has adopted a procedure for employees, shareholders or others to report concerns or complaints regarding 
accounting or other matters on an anonymous, confidential basis to the Audit, Finance and Risk Committee of the Board 
Submission of Concerns Regarding Accounting or Auditing Matters
of Directors. Such submissions may be directed to the Audit and Risk Committee c/o the Chief Officer, Legal, Regulatory 
and External Affairs of the Corporation.

Dividend Declaration for Preferred Shares
Series A: Fixed cumulative preferential cash dividends are paid quarterly when declared by the Board at the annual rate 
of $0.67724 per share from and including March 31, 2016, to, but excluding, March 31, 2021.

Series  B:  Floating  cumulative  preferential  cash  dividends  are  paid  quarterly  when  declared  by  the  Board  from  and 
including March 31, 2016, to, but excluding, March 31, 2021.

Series C: Fixed cumulative preferential cash dividends are paid quarterly when declared by the Board at the annual rate 
of $1.01 per share from and including June 30, 2017, to, but excluding, June 30, 2022.

Series E: Fixed cumulative preferential cash dividends are paid quarterly when declared by the Board at the annual rate 
of $1.30 per share from and including Sept. 30, 2017, to, but excluding, Sept. 30, 2022.

Series G: Fixed cumulative preferential cash dividends are paid quarterly when declared by the Board at the annual rate 
of $1.247 per share from and including Sept. 30, 2019, to, but excluding,Sept. 30, 2024.

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257

TRANSALTA CORPORATION 213

Shareholder Information

Shareholder Information

Record Date
March 2, 2020
June 1, 2020
Sept. 1, 2020
Dec. 1, 2020
March 1, 2021

Record Date
March 2, 2020
June 1, 2020
Sept. 1, 2020
Dec. 1, 2020
March 1, 2021

Series A
Payment Date
Preferred Share Dividends Declared in 2020
March 31, 2020
June 30, 2020
Sept. 30, 2020
Dec. 31, 2020
March 31, 2021
Series B
Payment Date
March 31, 2020
June 30, 2020
Sept. 30, 2020
Dec. 31, 2020
March 31, 2021
Series C
Payment Date
March 31, 2020
June 30, 2020
Sept. 30, 2020
Dec. 31, 2020
March 31, 2021
Series E
Payment Date
March 31, 2020
June 30, 2020
Sept. 30, 2020
Dec. 31, 2020
March 31, 2021
Series G
Payment Date
March 31, 2020
June 30, 2020
Sept. 30, 2020
Dec. 31, 2020
March 31, 2021

Record Date
March 2, 2020
June 1, 2020
Sept. 1, 2020
Dec. 1, 2020
March 1, 2021

Record Date
March 2, 2020
June 1, 2020
Sept. 1, 2020
Dec. 1, 2020
March 1, 2021

Record Date
March 2, 2020
June 1, 2020
Sept. 1, 2020
Dec. 1, 2020
March 1, 2021

Ex-Dividend Date
Feb. 28, 2020
May 29, 2020
Aug. 31, 2020
Nov. 30, 2020
Feb. 26, 2021

Ex-Dividend Date
Feb. 28, 2020
May 29, 2020
Aug. 31, 2020
Nov. 30, 2020
Feb. 26, 2021

Ex-Dividend Date
Feb. 28, 2020
May 29, 2020
Aug. 31, 2020
Nov. 30, 2020
Feb. 26, 2021

Ex-Dividend Date
Feb. 28, 2020
May 29, 2020
Aug. 31, 2020
Nov. 30, 2020
Feb. 26, 2021

Ex-Dividend Date
Feb. 28, 2020
May 29, 2020
Aug. 31, 2020
Nov. 30, 2020
Feb. 26, 2021

Dividend
$0.16931
$0.16931
$0.16931
$0.16931
$0.16931

Dividend
$0.22949
$0.22800
$0.14359
$0.13693
$0.13186

Dividend
$0.25169
$0.25169
$0.25169
$0.25169
$0.25169

Dividend
$0.32463
$0.32463
$0.32463
$0.32463
$0.32463

Dividend
$0.31175
$0.31175
$0.31175
$0.31175
$0.31175

Dividends are paid on the last day of the month in March, June, September and December. When a dividend payment date falls on a weekend or holiday, the payment 
is made on the following business day. Only dividend payments that have been approved by the Board of Directors are included in this table.  The Board of Directors 
have also declared dividends on the Series I Preferred Shares, which are held by by an affiliate of Brookfield Renewable Partners.

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TRANSALTA CORPORATION 214

  
Shareholder Information

Shareholder Information

Common shareholders receive one vote for each common share held.
Voting Rights

The Annual and Special Meeting of Shareholders will be held in a virtual-only meeting format at 12:00 noon Calgary 
time, on Tuesday, May 4, 2021. 
Annual Meeting 

Computershare Trust Company of Canada 
Suite 800, 324 - 8th Avenue SW 
Transfer Agent 
Calgary, Alberta T2P 2Z2 

Phone
North America: 
1.800.564.6253 toll-free  
Outside North America: 
514.982.7555 

Fax
North America: 
1.888.453.0330 toll-free
Outside North America:
403.267.6529
Website:
www.investorcentre.com

Toronto Stock Exchange (TSX) 
New York Stock Exchange (NYSE) 
Exchanges 

TransAlta Corporation common shares: TSX: TA, NYSE: TAC 
TransAlta Corporation preferred shares: TSX: TA.PR.D, TA.PR.E, 
Ticker Symbols 
TA.PR.F, TA.PR.H, TA.PR.J

Requests can be directed to:
Investor Relations
Additional Information
TransAlta Corporation 
110 - 12th Avenue SW  
P.O. Box 1900, Station “M” 
Calgary, Alberta T2P 2M1 

Phone
North America: 
1.800.387.3598 toll-free 
Calgary/outside North America: 
403.267.2520 

Email
investor_relations@transalta.com
Fax
403.267.7405
Website
www.transalta.com

TransAlta Corporation    |    2020  Annual Integrated Report

259

TRANSALTA CORPORATION 215

 
 
  
Shareholder Highlights

Shareholder Highlights

Year ended Dec. 31 ($)
Total Shareholder Return vs. S&P/TSX Composite Index
TransAlta

100 

74 

77 

31 

62 

49 

11

14

13

12

15

16

17

50 

S&P/TSX

100 

107 

121 

134 

123 

149 

162 

18

38 

148 

19

65 

182 

20

69 

192 

This chart compares what $100 invested in TransAlta and the S&P/TSX Composite Index at the end of 2011 would be worth today, assuming the reinvestment of all 
dividends.

Source: FactSet

Year ended Dec. 31 ($ per share)
14
Ten-Year Market Value vs. Book Value
10.52
Market Value

21.02

15.12

13.48

11

13

12

Book Value

12.08

8.78

7.92

8.52

Data is from 2011 onwards.

Source: FactSet and TransAlta

15

4.91

8.52

16

7.43

8.92

17

7.45

8.28

18

5.59

7.16

19

9.28

7.14

20

9.67

5.13

2020 
Monthly Volume and Market Prices
Volume (millions)

Mar

Apr

Feb

Jan

20

12

46

18

May

16

Jun

13

Jul

8

Aug

11

Sep

16

Oct

11

Nov

14

Dec

13

TSX closing price ($ 
per share)

Source: FactSet

9.88

10.05

7.36

8.19

8.05

8.05

8.76

8.38

8.19

7.90

9.00

9.67

(%)
Return on Common Shareholders' Equity
ROE

 (25.9) 

 (3.2) 

 10.6 

 6.3 

14

13

11

12

15

 (1.2) 

16

 5.4 

17

18

 (10.0) 

 (15.8)   

19

3.3 

20

 (30.3) 

Source: TransAlta

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TRANSALTA CORPORATION 216

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Information

Corporate Information

Corporate Governance: 
New York Stock Exchange 
TransAlta’s  Corporate  Governance  Guidelines,  Board 
Charter, Committee Charters, position descriptions for 
Disclosure Differences
the Chair and President & CEO, and codes of business 
conduct  and  ethics  are  available  on  our  website  at 
www.transalta.com.  Also  available  on  our  website  is  a 
summary  of  the  significant  ways  in  which  TransAlta’s 
corporate  governance  practices  differ  from  those 
required  to  be  followed  by  US  domestic  companies 
listing 
the  New  York  Stock  Exchange’s 
under 
standards.  Currently 
significant 
differences  between  our  governance  practices  and 
those of the New York Stock Exchange.

there  are  no 

The Board of Directors has established an anonymous 
and confidential Internet portal, email address and toll-
Ethics Helpline
free  telephone  number  for  employees,  contractors, 
shareholders  and  other  stakeholders  who  wish  to 
report  accounting  irregularities,  ethical  violations  or 
any other matters they wish to bring to the attention of 
the Board.

The  Ethics  Helpline  phone  number  is  1.855.374.3801
(US/Canada) and 1.800.339276 (Australia)
Internet portal: transalta.ethicspoint.com
Email: TA_ethics_helpline@transalta.com

Any  communications  to  the  Board  of  Directors  may 
also be sent to corporate_secretary@transalta.com

Dawn L. Farrell
TransAlta Corporate Officers
President and Chief Executive Officer

Todd Stack
Executive Vice President, Finance and 
Chief Financial Officer 
President of TransAlta Renewables Inc.

Jane N. Fedoretz
Executive Vice President, People, Talent & 
Transformation

Brett M. Gellner
Chief Development Officer

John H. Kousinioris
Chief Operating Officer

Shasta R. Kadonaga
Senior Vice President,  Shared Services

Kerry O'Reilly Wilks
Executive Vice President, Legal, Commercial & 
External Affairs

Michael J. Novelli
Executive Vice-President, Generation

Aron J. Willis
Executive Vice-President, Growth

Blain Van Melle
Executive Vice-President, Alberta Business

Kathryn Higgins
Managing Director and Corporate Controller

Brent Ward
Senior Vice President, M&A, Strategy & Treasurer and 
Chief Financial Officer of TransAlta Renewables Inc.

Scott T. Jeffers
Managing Director, Legal, Sustainability and Corporate 
Secretary 

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261

TRANSALTA CORPORATION 217

Glossary of Key Terms

Glossary of Key Terms

Alberta  Electric  System  Operator;  the  independent 
system  operator  and  regulatory  authority  for  the 
Alberta Electric System Operator (AESO)
Alberta Interconnected Electric System.

in 
The  Corporation's  hydroelectric  assets 
Alberta  consisting  of  the  Barrier,  Bearspaw,  Cascade, 
Alberta Hydro Assets 
Ghost,  Horseshoe,  Interlakes,  Kananaskis,  Pocaterra, 
Rundle,  Spray,  Three  Sisters,  Bighorn  and  Brazeau 
hydro facilities.

located 

Generation  equipment's  rated,  continuous 
carrying ability, expressed in megawatts.
Capacity

load-

A  cash-generating  unit  is  the  smallest  identifiable 
group  of  assets  that  generates  cash  inflows  that  are 
Cash-Generating Unit (CGU)
largely  independent  of  the  cash  inflows  from  other 
assets or groups of assets, and goodwill is allocated to 
each CGU or group of CGUs that is expected to benefit 
from  the  synergies  of  the  acquisition  from  which  the 
goodwill arose.

Alberta Power Purchase Arrangement 
A long-term arrangement established by regulation for 
the  sale  of  electric  energy  from  formerly  regulated 
(Alberta PPA) 
generating units to PPA buyers in Alberta.

A  generating  facility  that  produces  electricity  and 
another form of useful thermal energy (such as heat or 
Cogeneration
steam)  used  for  industrial,  commercial,  heating  or 
cooling purposes.

As defined by the Electric Utilities Act, ancillary services 
are  those  services  required  to  ensure  that  the 
Ancillary Services
interconnected electric system is operated in a manner 
that  provides  a  satisfactory  level  of  service  with 
acceptable levels of voltage and frequency.

Alberta Utilities Commission. 
AUC

A  measure  of  time,  expressed  as  a  percentage  of 
continuous  operation  —  24  hours  a  day,  365  days  a 
Availability
year  —  that  a  generating  unit  is  capable  of  generating 
electricity,  regardless  of  whether  or  not  it  is  actually 
generating electricity.

The  Balancing  Pool  was  established  in  1999  by  the 
Government  of  Alberta  to  help  manage  the  transition 
Balancing Pool
to  competition  in  Alberta's  electric  industry.  Their 
current  obligations  and  responsibilities  are  governed 
by the Electric Utilities Act (effective June 1, 2003) and 
the  Balancing  Pool  Regulation.  For  more  information 
go to www.balancingpool.ca.

A device for generating steam for power, processing or 
heating  purposes,  or  for  producing  hot  water  for 
Boiler
heating  purposes  or  hot  water  supply.  Heat  from  an 
external  combustion  source  is  transmitted  to  a  fluid 
contained within the tubes of the boiler shell.

An electric generating technology in which electricity is 
produced  from  otherwise  lost  waste  heat  exiting  from 
Combined cycle
one  or  more  gas  (combustion)  turbines.  The  exiting 
heat  is  routed  to  a  conventional  boiler  or  to  a  heat 
recovery steam generator for use by a steam turbine in 
the production of electricity. This process increases the 
efficiency of the electric generating unit.

recorded, 

legislation 

Refers  to  controls  and  other  procedures  designed  to 
ensure that information required to be disclosed in the 
Disclosure Controls and Procedures (DC&P)
reports  filed  by  the  Corporation  or  submitted  under 
securities 
processed, 
is 
summarized  and  reported  within  the  time  frame 
specified  in  applicable  securities  legislation.  DC&P 
include,  without  limitation,  controls  and  procedures 
designed  to  ensure  that  information  required  to  be 
disclosed  by  the  Corporation  in  its  reports  that  it  files 
or  submits  under  applicable  securities  legislation  is 
accumulated  and  communicated  to  management, 
including  the  Chief  Executive  Officer  and  Chief 
Financial  Officer,  as  appropriate  to  allow  timely 
decisions regarding required disclosure.

To  lower  the  rated  electrical  capability  of  a  power 
generating facility or unit.
Derate

A  set  of  processes  and  practices  that  enable  an 
organization  to  reduce  its  environmental  impacts  and 
Environmental Management Systems (EMS)
increase its operating efficiency. 

Sets  a  carbon  price  per  tonne  of  GreenHouse  Gas 
emissions related to transportation fuels, heating fuels 
Carbon Tax
and other small emission sources.

the  Government  of  Ontario,  emission 
Under 
performance  standards  establish  greenhouse  gas 
Emission Performance Standards (EPS)
(GHG) emissions limits for covered facilities. 

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TRANSALTA CORPORATION 218

Emission Performance Credits. 
EPCs

Literally means “greater force.” These clauses excuse a 
party  from  liability  if  some  unforeseen  event  beyond 
Force Majeure
the control of that party prevents it from performing its 
obligations under the contract.

Amount of cash generated by the Corporation through 
its  operations  (cash  from  operations)  minus  the  funds 
Free Cash Flow (FCF)
the  purchase 
used  by 
improvement,  or  maintenance  of  the  long-term  assets 
to 
the 
Corporation (capital expenditures).

the  efficiency  or  capacity  of 

the  Corporation 

improve 

for 

Calculated  as  cash  flow  from  operating  activities 
before  changes  in  working  capital  and  is  adjusted  for 
Funds from Operations (FFO)
transactions  and  amounts  that  the  Corporation 
believes  are  not  representative  of  ongoing  cash  flows 
from operations. 

Written notice given to the contractor fully authorizing 
them to proceed with the work. 
Full Notice to Proceed (FNTP)

A  metric  unit  of  energy  commonly  used  in  the  energy 
industry. One GJ equals 947,817 British Thermal Units 
Gigajoule (GJ)
(Btu). One GJ is also equal to 277.8 kilowatt hours .

A measure of electric power equal to 1,000 megawatts.
Gigawatt (GW)

A measure of electricity consumption equivalent to the 
use of 1,000 megawatts of power over a period of one 
Gigawatt hour (GWh)
hour.

A  gas  that  has  the  potential  to  retain  heat  in  the 
atmosphere,  including  water  vapour,  carbon  dioxide, 
Greenhouse gas (GHG)
methane,  nitrous  oxide,  hydrofluorocarbons  and 
perfluorocarbons.

The world's most widely used sustainability standards. 
An  independent,  international  organization  that  helps 
Global Reporting Initiative (GRI)
businesses  and  other  organizations  take  responsibility 
for  their  impacts  by  providing  them  with  the  global 
common language to communicate those impacts. 

Glossary of Key Terms

Glossary of Key Terms

A measure of conversion, expressed as British thermal 
units  per  Megawatt  hour,  of  the  amount  of  thermal 
Heat rate
energy required to generate electrical energy.

International Financial Reporting Standards. 
IFRS 

Key Performance Indicators. 
KPIs 

A measure of electric power equal to 1,000,000 watts.
Megawatt (MW)

A measure of electricity consumption equivalent to the 
use  of  1,000,000  watts  of  power  over  a  period  of  one 
Megawatt Hour (MWh)
hour.

A term used to describe assets that are not contracted 
and are exposed to market pricing.
Merchant

Memorandum of Agreement. 
MoA

Normal Course Issuer Bid. 
NCIB 

The maximum capacity or effective rating, modified for 
ambient  limitations,  that  a  generating  unit  or  power 
Net maximum capacity
plant  can  sustain  over  a  specific  period,  less  the 
capacity  used  to  supply  the  demand  of  station  service 
or auxiliary needs.

Other Comprehensive Income.
OCI 

Output- Based Pricing Standard 
OBPS 

Operations, maintenance and administration costs 
OM&A 

The Pioneer gas pipeline jointly owned and operated by 
TransAlta and Tidewater Midstream and Infrastructure 
Pioneer Pipeline
Ltd.

A  long-term  agreement  established  by  regulation  for 
the sale of electric energy to PPA buyers.
Power Purchase Agreement (PPA) 

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263

TRANSALTA CORPORATION 219

  
Glossary of Key Terms

Glossary of Key Terms

The  Balancing  Pool  terminated  the  Sundance  B  and  C 
Power  Purchase  Arrangements  and  as  a  result,  paid 
PPA Termination Payments
TransAlta  $157  million  in  the  first  quarter  of  2018  as 
well as an additional $56 million (plus GST and interest) 
on winning the arbitration against the Balancing Pool in 
the third quarter of 2019. Refer to the Significant and 
Subsequent Events section for further details.

Safety  metric  that  tracks  the  total  number  of  injuries, 
including  minor  first  aids,  relative  to  exposure  hours 
Total Injury Frequency (TIF)
worked.

injuries  and 
Tracks  the  number  of  more  serious 
excludes  minor  first  aids,  relative  to  exposure  hours 
Total Recordable Injury Frequency (TRIF) 
worked. 

Property, plant and equipment. 
PP&E 

Renewable Energy Credits. 
REC 

terrestrial 
generated 
Power 
mechanisms  including  wind,  geothermal,  solar  and 
Renewable power
biomass with regeneration.

renewable 

from 

Sustainability Accounting Standards Board 
Connects  businesses  and  investors  on  the  financial 
impacts  of  sustainability.  SASB  Standards  identify  the 
(SASB) 
subset  of  ESG 
issues  most  relevant  to  financial 
performance in each of the 77 covered industries. 

A  measure  of  gross  margin  per  megawatt  (sales  price 
less cost of natural gas).
Spark spread

to 

Task Force on Climate-related Financial 
consistent,  decision-useful, 
solicit 
Designed 
forward-looking  information  on  the  material  financial 
Disclosures (TCFD)
impacts  on  climate-related  risks  and  opportunities, 
including those related to the global transition to a low-
carbon economy. They are adopted by all organizations 
with public debt or equity in G20 jurisdictions for use in 
mainstream financial filings. 

A  machine  for  generating  rotary  mechanical  power 
from  the  energy  of  a  stream  of  fluid  (such  as  water, 
Turbine
steam or hot gas). Turbines convert the kinetic energy 
of fluids to mechanical energy through the principles of 
impulse and reaction or a mixture of the two.

Periodic  planned  shutdown  of  a  generating  unit  for 
major maintenance and repairs. Duration is normally in 
Turnaround
weeks.  The  time  is  measured  from  unit  shutdown  to 
putting the unit back online.

United Nations Sustainable Development 
The  Sustainable  Development  Goals  are  the  blueprint 
to achieve a better and more sustainable future for all. 
Goals (UN SDGs) 
They  address  the  global  challenges  we  face,  including 
poverty, 
inequality,  climate  change,  environmental 
degradation, peace and justice. 

The  shutdown  of  a  generating  unit  due  to  an 
unanticipated breakdown.
Unplanned outage

To  increase  the  rated  electrical  capability  of  a  power 
generating facility or unit.
Uprate

A  measure  used  to  manage  exposure  to  market  risk 
from commodity risk management activities.
Value at Risk (VaR) 

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TRANSALTA CORPORATION 220

  
In an effort to be environmentally responsible, please notify your financial institution if you are 
receiving duplicate mailings of this annual report. The TransAlta design and TransAlta wordmark 
are trademarks of TransAlta Corporation.

This report was printed in Canada. The paper, paper mills and printer are all certified by the 
Forest Stewardship Council, which is an international network that promotes environmentally 
appropriate and socially beneficial management of the world’s forests.

TransAlta Corporation
110 - 12th Avenue SW
Box 1900, Station “M”
Calgary, Alberta
Canada  T2P 2M1
403.267.7110
www.transalta.com