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Zephyr Energy Plc

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FY2023 Annual Report · Zephyr Energy Plc
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Zephyr Energy plc

Annual Report and Financial Statements 
For the year ended 31 December 

We are a technology-led producing oil and gas 
company focused on responsible resource 
development. We have a balanced portfolio of 
operated and non-operated assets, located in  
two established oil producing basins in the Rocky 
Mountain region of the United States.

We are committed to be responsible stewards  
of investors’ capital, and the environment in which  
we work.

Our vision is to open up the next prolific onshore 
U.S. oil and gas play. 

Contents

Page
1
2
4
6
10

Strategic report 
Business highlights 
About us 
Our assets 
Chairman’s statement 
Our strategy and value proposition 
Chief Executive officer’s report  
12
and operating review  
Environmental, Social and Governance  21
23
Financial review 
25
Principle risks and uncertainties 
26
S172 (1) statement 

Governance 
Page
28
Board of Directors 
29
Senior management 
30
Corporate governance statement 
Directors’ report 
35
Statement of Directors’ responsibilities  39
40
Independent auditor’s report 

Financial statements  
Consolidated income statement 
Consolidated statement of  
comprehensive income 
Consolidated balance sheet 
Consolidated statement of  
changes in equity 
Consolidated cash flow statement 
Company balance sheet 
Company statement of changes  
in equity 
Company cash flow statement 

Notes to the financial statements 

Other information
Directors, advisers and officers 
Glossary  

Page
48

49
50

51
52
53

54
55

56

87 
88

Zephyr Energy plc Annual Report and Financial Statements 2023

Strategic report

Business highlights

FY 2023 REVENUES  

2P RESERVES PARADOX 

FY 2023 HYDROCARBON  

SALES VOLUMES

US$25.2million

2.6mmboe  

1,116boepd

FY 2023 NET CASH  GENERATED  

2C RESOURCES PARADOX 

PARADOX ACREAGE AT JUNE 2024

FROM  OPERATIONS 

US$11.6million

34mmboe 

46,000+

FY 2023 LOST TIME INJURIES (“LTIs”) 

2U RESOURCES PARADOX 

Nil

270mmboe

11

About us

Growth & asymmetric upside  
in the U.S. oil and gas sector

We are a cash generative, producing oil and 
gas company focused on responsible resource 
development.

Since 2020, the team has completed 14 
acquisitions and increased production from  
its non-operated assets from zero to a current 
run rate of 1,200 boepd in under three years. 
Our Paradox development offers significant 
potential upside for increased production.

Our vision 

Open up the next  
prolific onshore  
U.S. oil and gas play

T I N G   V A L U E   F O R   S H A REHOLDERS

A

R

E

N

E

           G

A R A D O X PROJEC

T

P

Large-scale 
exploration upside

Operational control  
over organic growth

Long-term development  
potential

L
A

I

T
N
E
T
O
P

H
T
W
O
R
G

D
N
U
O
P
M
O
C

Balanced portfolio  
Our balanced asset base provides  
portfolio diversification  
and asymmetrical  
growth potential.

I S T O N PROJECT

L

W I L

Downside protection through  
current production and cashflow

Attractive risk-adjusted returns 
 in an established basin

Certainty of funding for Paradox and overhead

Each dollar spent generates multiple dollars 
available for future investment

Access to prudent levels of lower  
cost debt financing

Ability to hedge and dampen  
commodity price volatility

2

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic report 
 
 
      
About us

Purpose and values  

We recognise we have an important part to  
play in shaping the future of our industry and  
a sustainable future. 

Our purpose is to drive growth and create  
long-term value for all stakeholders through 
responsible oil and gas production.

Central to our purpose are our values.

- Responsible stewards of investors’ capital
- Responsible stewards of the environment 

A

R

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N

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           G

T I N G   V A L U E   F O R   S H A REHOLDERS

GENERATIN

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CREATING  
LONG-TERM 
VALUE

U

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  G E N E R A T I N G   V A

3

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic report 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Our assets

We have a balanced portfolio of both operated and non-operated 
assets located in two established oil producing basins in the U.S.

This strategy provides portfolio diversification and asymmetrical 
growth potential. 

PARADOX PROJECT
UTAH  

We hold a 46,000+acre leasehold with 2P 
reserves of 2.6 mmboe, 2C resources of 34 
mmboe and 2U resources 270 mmboe. We 
continue to grow our land position and 
develop the project to deliniate the full scale 
and potential value of the asset

4

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportMONTANA

NORTH DAKOTA

 Current projects
 Areas of interest

WYOMING

UTAH

COLORADO

WILLISTON PROJECT 
NORTH DAKOTA & MONTANA

A growing suite of non-operated production 
and near-term production assets acquired for 
their low-risk, high-return cashflow potential. 
Our non-operated portfolio generated revenue 
of circa US$25 million in FY 2023.

5

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChairman’s statement

“ The Board is looking to the 
future with a high degree of 
confidence as we continue  
to deliver on our vision of 
‘opening up the next prolific 
onshore U.S. oil and gas play’ 
and delivering value for all 
stakeholders.“

6

On behalf of the Company’s Board of Directors (the “Board”)  
I am pleased to present the Company’s financial and 
operational results for the 2023 financial year which reflect  
the ongoing efforts and commitment of the Zephyr team. 

Despite facing a significant operational challenge during the 
2023 financial year, we continued to deliver as a cash-generating, 
exploration and production group focused on two established oil 
producing basins in the Rocky Mountain region of the U.S., and 
we have made steady progress in the pursuit of our key objective 
of unlocking the next prolific onshore U.S. oil and gas play. 

With a balanced portfolio of non-operated assets and an 
operated asset with asymmetric growth potential, our strategy is 
clear. Cashflows generated from non-operated asset production 
in the Williston Basin, North Dakota, U.S. (the “Williston project”) 
are recycled and reinvested to pursue development of our 
flagship operated asset in the Paradox Basin, Utah, U.S. (the 
“Paradox project”). 

We are supported and driven by our exceptional people and have 
continued to bolster our team in the U.S. by way of several key 
hires in operations and finance. Led by an experienced executive 
leadership team with a proven track record, I believe this will 
enable us to deliver on our strategy and, in-turn, generate value 
and responsible growth for all our stakeholders.

BOE

600,000

500,000

300,000

200,000

100,000

$0

2020

2021

2022 

2023

REVENUE (US$)

$50,000,000

$40,000,000

$30,000,000

$20,000,000

$10,000,000

$0

2020

2021

2022

2023

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChairman’s statement

As always, the health, safety and welfare of the team and 
contractors is of prime importance. We have a zero-harm safety 
culture focused on continuous improvement to achieve an 
injury-free and safe work environment. The Board is pleased to 
report that during the period there were no Lost Time Injuries (“LTIs”). 

The Board is also committed to ensuring that the actions and 
investment decisions it makes are in line with our core values  
of being responsible stewards of investors’ capital and of the 
environment. This includes our commitment to minimising our 
environmental impact through positive actions and to protect 
the surroundings in which we operate.

After months of meticulous planning, I was delighted that we 
managed to successfully drill the State 36-2R LNW-CC well  
(the “State 36-2R well”). Drilling operations delivered on all the 
key objectives, and we look forward to the commencement of 
the production test which will soon allow us to understand the 
full potential of the well. This will hopefully be the catalyst for  
an exciting and transformational period ahead.

I am pleased to point to several examples of key stakeholders 
who have worked with and supported the Company over the 
recent months demonstrating a strong endorsement of the 
Company and the way in which we operate. 

In this respect, I was incredibly proud of how we responded  
to the well control issue on the State 36-2 LNW-CC well (the 
“State 36-2 well”) in April 2023. The incident was a significant 
event for our team but the response, in a difficult and fast-
moving situation, was well executed despite the challenges 
faced. There were several important lessons learned from the 
incident, but a key takeaway for me was the professionalism  
and commitment of our team in addressing the situation in a 
responsible manner. It is further credit to the team that the 
incident was closed-off with no LTIs or long-term environmental 
damage and that we managed to get our day-to-day operations 
back on track to the point that drilling operations recommenced 
on the Paradox project within twelve months of the incident.

Sturdy and honest relationships, formed over the years of 
working with multiple state and federal regulators, proved  
of great benefit during the well control issue and subsequent 
permitting of the State 36-2R well. The relationship and 
knowledge-sharing partnership with the U.S. Department  
of Energy and the University of Utah continues to benefit  
all parties, and further non-dilutive grant funding has recently  
been made available to the Company. Further, the supportive 
relationship with a key debt provider, SGR Investments LLC,  
as evidenced by the conversion of a sizeable portion of their 
existing debt into Zephyr’s equity at the prevailing market price. 
I am proud that the Company is recognised by those with whom 
we work closely as a professional and quality operator. 

7

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportWilliston project
Our non-operated assets continue to deliver strong cashflows, 
allowing us to proceed with our ongoing Paradox project 
development, and have been of critical importance during  
the period in which we managed the well control incident.

Our robust and diverse portfolio of non-operated production 
and near-term production assets were acquired for their 
low-risk, high-return cashflow potential. Since 2020, we have 
completed 14 discrete acquisitions with a portfolio of interests 
taking production from zero to a current run rate of over 1,200 
barrels of oil equivalent per day (“boepd”). 

At 31 March 2024, we had 230 wells in our portfolio available for 
production and our net working interests now average 7.1% per 
well (equivalent to 16.3 total wells).

Environmental, Social and Governance (“ESG”)

As we grow and transform the Company, we continue to foster 
a safe working environment and maintain active relations in the 
communities in which we operate. Sustaining our local communities 
through environmental stewardship, social responsibility and 
strong corporate governance is an extension of our mission  
and reflects our goal to make a lasting and meaningful positive 
impact in these communities.

I am pleased that we continue to pursue carbon-neutral status 
as an oil and gas producer. This is achieved through our Verified 
Emission Reduction credits (“VERs”) programme, which aims to 
offset all Scope 1 carbon emissions from both our operated and 
non-operated assets, and which is administrated through the 
Prax Group (“Prax”), a leading UK- based energy trading company.

Chairman’s statement

Operational activity

Paradox project
During the period under review, Zephyr saw a recalibration at the 
Paradox project following the discovery of a major and productive 
natural fracture network and the subsequent well-control incident 
on the State 36-2 well.

What followed was a period of considerable activity to address 
the impacts of the well control incident. Once resolved, and after 
extensive due diligence, workover operations and confirmation 
that our well control insurance would cover substantially all costs 
associated with the redrill, the Board concluded that redrilling 
the State 36-2 well was the optimal path forward to harness the 
significant discovery made by the well. 

Following the Board’s decision, Zephyr’s team commenced 
detailed internal well-planning processes (supplemented by 
multiple high-pressure/high temperature specialist service 
providers) which resulted in an augmented well plan. Once 
sundry permit approvals were granted, swift progress was made 
by our operational team with the award of the drilling permit and 
securing a rig contract with Helmerich & Payne (“H&P”), to 
enable full drilling operations to commence in April 2024. 

We were delighted to recently announce that drilling operations 
on the State 36-2R well were completed safely and successfully 
and that all key objectives had been met. During the upcoming 
production test, the well will be flowed and production tested to 
determine reservoir pressure, fluid composition, well flow rate, 
bulk reservoir permeability and to deliver an early estimate of  
the overall potential recoverable resources.

The drilling successes achieved to date have given added 
impetus for the Group to secure an infrastructure solution for 
the gas produced from the Paradox project, and in September 
2023 we noted the commissioning of the Green River pipeline 
owned by Dominion Energy LLC, Utah (“Dominion”). The pipeline 
crosses Zephyr’s acreage position and has the potential to 
provide a nearby route for gas export from our Paradox acreage. 

We are continually looking at ways to increase the scale, optionality 
and attractiveness of the Paradox project, and our new farm-in 
opportunity in the Salt Wash helium field is another exciting 
development. Our team has studied the potential to redevelop 
the remaining reserves of the Salt Wash Field, which lies directly 
to the south of our White Sands Unit (the “WSU”), utilises the 
same road network, and has similar oil and gas potential in the 
Paradox Formation as the WSU. While helium is a new addition 
to our resource exposure, many nearby Paradox Basin oil and gas 
operators are already producing comingled helium in commercial 
quantities, with an active local offtake market for produced helium. 
While the Group is not looking for helium to become a primary 
focus, the Group is cognisant that it may offer optionality and 
represent a value-added opportunity for the Paradox project. We 
expect to partner with industry participants to help appraise and 
fund the potential of this resource while also taking advantage of 
our regional knowledge, existing operations and asset platform. 

8

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChairman’s statement

Financial

For the 2023 financial year, the Group reported revenues of 
US$25.2 million (2022: US$41.1 million) and a gross profit of 
US$7.2 million (2022: US$22.4 million). 

These results were largely in line with our expectations, reflecting 
the lower oil price environment over the period, normal decline on 
the non-operated portfolio wells, and delays to the six wells operated 
by Slawson Exploration Company (“Slawson”) coming online.

The Slawson wells are now online, albeit still not at full capacity.  
At the date of this report, production information indicates that 
the wells remain partially curtailed, likely due to gas infrastructure 
constraints. 

Conclusion

I would like to extend my appreciation to the team and our contractors 
for their work during the past year to deliver on the development of the 
Paradox project and on our wider strategy. I would also like to extend 
my gratitude to my fellow Board members, leadership team, advisors 
and most importantly our Shareholders for their continued support. 

The Board is looking to the future with a high degree of confidence 
as we continue to deliver on our vision of ‘opening up the next 
prolific onshore U.S. oil and gas play’ and delivering value for all 
stakeholders. 

We have an exciting period ahead of us and I believe we have the 
pieces in place to enable us to deliver on our strategic objectives 
successfully

RL Grant  
Chairman

26 June 2024

9

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportOur strategy and investment  
proposition 

Our strategy

Our strategy remains clear, build cashflow 
generation from our non-operated portfolio 
(Williston Basin and other core basins) to 
systematically develop our flagship Paradox 
project.

We are focused on long-term production of 
profitable volumes of oil and gas across our 
portfolio. 

We are focused on growth both organically and 
through value-accretive opportunities whilst 
maintaining strong financial controls and 
cautious risk management.  

Our strategy is underpinned by our values  
and commitment to be a trusted partner and 
ambassador to create positive impact for all 
stakeholders. 

Our three strategic pillars: 

1

ACQUIRE  
production assets in  
U.S. basins

 ••  Acquire working interest positions in 
value accretive, high-quality, cash 
generative production and growth 
assets 

 ••  Utilise cash generation from portfolio 
to develop flagship Paradox project

2

REINVEST  
in the Paradox  
project

  ••  Further define Paradox project and 
materially increase reserve base

 ••   Increase land position and acquisition  
of infrastructure to further reduce 
forecast expenditure

MAINTAIN  
VALUES  

3

  ••  Responsible stewards of: 

- Investors capital 
- The environment 

“ The Board is looking to the future with a high degree  
of confidence as we continue to deliver on our vision  
of opening up the next prolific onshore U.S. oil and  
gas play and delivering value for all stakeholders.“

10

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic report   
 
 
 
 
 
 
    
   
 
 
 
 
   
   
   
 
Zephyr Energy plc Annual Report and Financial Statements 2023  

Strategic report

Our strategy and investment proposition

Investment proposition 

Our balanced portfolio of operated and  
non-operated assets continues to yield strong 
results. Growth of our non-operated portfolio has 
been considerable with revenues increasing from 
nil to over US$25 million over the last three years, 
with sales volumes of 403,877 boe for FY 2023. 

  NON-OP  
TRACK 
RECORD

  ••  From inception to 31 December 2023, 

the non-op portfolio delivered 
operating income of circa US$52.9 
million, with all its cashflow reinvested

  ••   To date, Zephyr’s drilling  

investments have paid back in less 
than 20 months. Newer investments 
are projected to pay out in shorter 
time frames at current strip prices

 BALANCED  
DE-RISKED  
PORTFOLIO  
with asymmetrical 
upside potential

   ••  Stable cashflows from the  

Williston project to be invested  
in the Paradox project

  ••  Modern seismic, detailed core,  

log and pressure data

  ••  U.S. Department of Energy grant 

funding and academic partnership  

SIGNIFICANT  
DEVELOPMENT  
OPPORTUNITY

 ••  Paradox project: 46,000+ acre  

position with significant inventory  
in an emerging basin where modern  
drilling and completions have not  
been used prior to Zephyr

 ••  Significant inventory across the  

Paradox project, with 2U potential  
of over 270 mmboe

 ••  Further upside through exposure  
to the Salt Wash Field helium play

 TEAM  
POISED  
TO DELIVER

  ••  A growing operational team  

proportional to Paradox activity 
  ••  Track record of delivering sustainable 

growth for energy companies

 ESG  
FOCUS 

 NEAR-TERM 
CATALYSTS 

  ••   Limit our own carbon emissions  

 ••  State 36-2R production testing 

through our VERs credit programme  
with a goal to mitigate all Scope 1 
 carbon emissions

   ••   Proactive engagement with the 

communities in which we operate

underway

  •  •  Drilling the Salt Wash Field,  

increasing resource exposure

  ••  Updated Paradox CPR

11

Xxxx   
   
 
   
 
  
   
 
 
 
 
 
 
   
    
   
   
 
Chief Executive Officer’s report  
and operating review

Principal objectives and strategies

Zephyr Energy plc is an oil and gas exploration and production 
group operating in the Rocky Mountain region of the U.S.

The Group’s stated mission is to open up the next prolific 
onshore U.S. oil and gas play through the development of its 
flagship Paradox project. The two core values of the Group are 
to be responsible stewards of investors’ capital and responsible 
stewards of the environment.

To achieve this mission, the Group has prioritised:

••   Building a team with significant experience in the U.S. oil and 

gas sector, with a particular focus on operations, development, 
governance, finance, merger, acquisition, and turnaround 
experience. The Group has strengthened the operational team 
significantly during the 2023 financial year with several key 
appointments and promotions;

••   Maintaining a clear strategic direction - we are wholly focused 
on responsible exploration and production assets in the Rocky 
Mountain region;

••   The development of a non-operated asset portfolio that 

provides cashflow to be reinvested in the Paradox project;

••   A continued focus on meaningful ESG efforts, including 

corporate governance compliance, pursuing carbon-neutrality 
across our operations, and proactive engagement with the 
communities in which we operate;

••   The leveraging of partnerships (such as the U.S. Department of 
Energy, experienced operators in the basins in which we operate, 
and relationships with our debt providers and Shareholders);

••   The design and build of a technology-led acquisition process 
which can rapidly assess opportunities of further interests 
through acquisition, farm-in agreements or joint venture 
arrangements; and

••   Tight financial control and cash conservation.

Review of operations and future developments

Overview
The 2023 financial year, and the period since, were a time of sustained 
progress and activity for Zephyr despite an unwelcome operational 
setback with the well-publicised State 36-2 well control issue.

The Group continues to lay the foundations to bring the Paradox 
project into commercial production, and in doing so will deliver 
on the Board’s core mission of unlocking the next prolific onshore 
oil and gas play in the U.S.

Having made excellent progress in rectifying matters following 
the well control incident on the State 36-2 well, we subsequently 
recommenced our drilling operations, and the recent drilling of 
the State 36-2R well means we have now fully resumed our 
Paradox project activity and the wider project development.

In addition to our planned activity on the Paradox project,  
we expect to see increased cashflows from our non-operated 
assets over the course of the next financial year, particularly  

“ The Group’s stated mission 
is to open up the next 
prolific onshore U.S. oil  
and gas play through the 
development of its flagship 
Paradox project“

12

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic report 
Chief Executive Officer’s report and operating review

now that the Slawson wells are online. Planning is underway to 
develop our new farm-in project in the Salt Wash natural gas and 
helium field. The Salt Wash project will likely be undertaken in a 
financial partnership with industry participants.

I feel that we can look forward to the next period with a degree 
of optimism and excitement as we look to further unlock the 
value from our strong asset portfolio for our Shareholders.

Paradox project – operated asset
Background
The Board continues to believe that the Paradox project has 
considerable scale and economic potential.

The Paradox project is an operated lease holding of over 46,000 
gross acres, 25,000 acres of which has been assessed, by 
third-party consultant Sproule International (“Sproule”), to hold, 
net to Zephyr, 2P reserves of 2.6 million barrels of oil equivalent 
(“mmboe”), 2C resources of 34 mmboe and net unrisked 2U 
resources of 270 mmboe. 

The Group’s land management strategy continues to be active 
and has resulted in a defensible and growing land position which 
Zephyr’s Board believes is increasingly difficult to replicate in 
today’s increasingly regulatory and political environment.  

To date, all three wells drilled by Zephyr at the Paradox project 
have discovered hydrocarbons, and the project appears capable 
of being transformed into commercial production once the wells 
are tied into natural gas infrastructure. 

Drilling activity to date has provided the Group with a wealth  
of new reservoir information which has in turn resulted in a far 
greater geological understanding of our acreage position.  
This information includes strong evidence of:

••   A continuous resource play (tight oil and tight gas); 

••   Repeatable petrophysics across a large area;

••   Geology which correlates with the seismic results;

••   Consistent reservoir thickness within a sub area;

••   High reservoir pressures;

••   High matrix permeability for a resource play; 

••   A reservoir which can be stimulated (with favourable rock 

mechanics albeit under high stress); and

••   The presence of productive natural fractures.

Based on this, the Board believes that the Paradox project 
contains substantial potential upside and is fully focused on 
continuing the work required to develop the acreage into a 
revenue generating project. 

The Board is delighted that Dominion’s 16-inch gas export  
pipeline which extends across the Paradox project has now been 
completed. This off-take solution directly crosses over Zephyr’s 
asset base and provides the potential for the commercial export 
of natural gas from our wells to the sales market.

Timeline

2024 

•  Salt Wash Field update

• Paraodx Basin updated CPR

•  State 36-2R production testing

•  State 36-2R drilled

•  Zephyr agrees to farm into the proven 

Salt Wash Field, further expanding 
acreage position

2023 

•  Dominion finishes pipeline extension 

and is capable of accepting gas volumes 

•  36-2 hits major natural fracture and 

28-11 well re-started with oil production

2022

•  Additional Paradox Basin acreage  

acquired

•  Unit-level gas pipelines and processing 

infrastructure acquired by Zephyr

•  Dominion Energy, one of the U.S. largest 
utilities, acquires the 16” pipeline leading 
to the drilling unit with plans to refurbish 
and extend it 

2021

•  U.S. Government approval for formation 
of new 25,000 acre federal drilling unit

•  16-2 Horizontal lateral drilled, stimulated 
and tested - a first for the basin and with 
resulting peak initial production rates 
above 1,100 boe/d

2020

•  16-2 well drilled to Cane Creek reservoir  
in record time, with evident hydrocarbon 
shows 

•  U.S. Government grant award to fund 
initial vertical well (which confirmed 
movable hydrocarbons and seismic tie  
to actual geological conditions) 

2018

•  25,000 acres of modern 3D seismic 

acquired and processed – best seismic in 
the basin

1313

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChief Executive Officer’s report and operating review

State 36-2 well
In November 2022, the Group announced that drilling on the 
State 36-2 well had commenced with the prime objective to 
target potential production from the Cane Creek reservoir. 
Drilling operations continued into 2023.

Results from the drilling operations indicated that the well 
penetrated a folded and naturally fractured Cane Creek reservoir, 
features which have been highly productive in Cane Creek wells 
drilled by other operators. Pore pressure analysis suggested that 
the well encountered very high reservoir overpressure, with 
formation pressures estimated at around 9,300 pounds per 
square inch (which is broadly consistent with previously drilled 
offset wells).

The well further delineated the presence of natural gas and 
condensate within a large structural compartment at a new 
location within Zephyr’s acreage and 3D seismic coverage,  
and provided additional confirmation of Zephyr’s model for 
hydrocarbons in place across its entire acreage position.

State 36-2 well production test and well control incident
On 8 March 2023, the Group announced that planning for the 
production test on the well had been completed and that all 
services for the test had been procured. A service rig was 
mobilised to the well-site and operations on the ground 
commenced. Workover operations (which were to include 
perforating the well in the productive portion of the Cane Creek 
reservoir) and subsequent production testing were estimated to 
take four to six weeks. As the well was expected to flow from 
natural fractures, no hydraulic stimulation was expected as part 
of this test.

On 7 April 2023, as workover operations were being completed, 
the well experienced a control issue despite multiple attempts 
to secure the well by the rig crew. The incident was initially 
caused by a downhole barrier failure and then a subsequent  
failure of a surface safety valve, which resulted in hydrocarbons 
being released from the well.

In keeping with safety procedures, all personnel were safely 
evacuated without injury. All relevant authorities were notified 
and a specialist well control team (recommended by the Group’s 
insurers) was deployed to bring the well under control as quickly 
as possible. 

Ultimately, well control efforts were successful and remediation 
and clean–up operations completed. A third-party confirmatory 
environmental survey was subsequently undertaken and the 
results found no evidence of any environmental impact. The 
relevant authorities confirmed that the remediation satisfied 
regulatory standards.

During the incident, multiple joints of the well’s 2 7/8-inch 
production tubing were compromised, and Zephyr’s operations 
team worked methodically to remove and inspect the joints 
while keeping the wellbore static. Operations to retrieve the 
damaged tubing progressed slower than expected due to the 
poor condition of the tubing, as exhibited by the multiple 
damaged and buckled joints retrieved that led to the need for 
milling operations. Ultimately operations did not result in sufficient 
recoveries to justify the continuation of the ongoing cost of this 
well work versus the estimated cost to redrill the well.

Therefore, and following consultation with our regulators and 
insurers, the Board elected to proceed with a redrill of a 
“twinned” well, the State 36-2R well, from an adjacent location 
on the same drilling pad.

The Group retains full well control insurance coverage and 
expects to recover substantially all costs associated with the 
well control incident and the drilling costs associated with the 
redrill. At the date of this report, circa US$12 million has been 
recovered in respect of the incident.

State 36-2R well
Over the last few months of 2023, with the aim of ensuring an 
optimal drilling outcome for the State 36-2R well, Zephyr’s team 
commenced a detailed internal well-planning processes 
(supplemented by multiple high-pressure/high temperature 
specialist service providers) and continued its extensive 
interaction with the Group’s well control insurance providers. 
This process culminated in an updated drilling plan which was 
then submitted to state and federal regulators for approval.

In February 2024, the Group announced that it had received the 
regulatory approvals and permits required to proceed with the 
redrill and in March 2024, following a detailed selection process, 
Zephyr announced that it had signed a rig contract with H&P for 
its Rig 257 to drill the well.

“ The Board’s strategy is to utilise the majority of the considerable 
cashflows generated from the non-operated Williston Basin 
portfolio in the Paradox project development programme,  
and this organic growth strategy will continue.“

14

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChief Executive Officer’s report and operating review

The key objectives of the State 36-2R well were:

••   To successfully complete drilling operations to total depth 

safely and without harm to people, the environment or equipment; 

••   To successfully twin the State 36-2 well and intersect the same 
Cane Creek reservoir natural fracture system identified by it;

••   To confirm the presence of hydrocarbons as found by the 
State 36-2R well, and further appraise the Cane Creek 
reservoir at Zephyr’s federal WSU; and

••   Should the original well result be replicated, to assess the 

reservoir productivity by flow testing the new well.

In April 2024, the Group announced that full drilling operations 
had commenced and the surface section of the well had been 
spud. By June 2024, the Group announced that the well had been 
completed safely and successfully, with the well drilled to a total 
depth of 10,290 feet (measured depth) where it intersected the 
same Cane Creek reservoir within 15 feet of the original wellbore 
and its natural fracture network. This means that the three of the 
four key objectives for the well have now been met.

Zephyr has mobilised the equipment for completion and 
production testing of the naturally fractured reservoir zone that 
was intersected during drilling operations and production testing 
is expected to be underway shortly.

Initial analysis from drilling indicates that the State 36-2R well, like 
the State 36-2 well, penetrated a folded and naturally fractured 
section of the Cane Creek reservoir. The well encountered drilling 
mud gas shows of a similar magnitude to the original well and 
pore pressure analysis suggest formation pressures estimated  
at approximately 9,300 pounds per square inch (which is broadly 
consistent with previously drilled offset wells). 

The well further confirms the presence of hydrocarbons within  
a large structural compartment, within Zephyr’s acreage and 3D 
seismic coverage. During the ongoing production test, the well 
will be flowed and production tested to determine reservoir 
pressure, fluid composition, well flow rate, bulk reservoir 
permeability and deliver an early estimate of the overall potential 
recoverable resources.

State 16-2LN-CC well update
Following on from the successful drilling, completion and 
production test of the State 16-2LN-CC well (the “State 16-2 
well”) in 2022, the first phase of the extended production testing 
on the well was completed within the flare consent limit set by 
the regulatory bodies, and Zephyr subsequently tested the well  
a second time in March 2023 to commission surface facilities, 
improve flow assurance and to gather more production data.  

This second well test was hampered by severe weather and initial 
surface facility commissioning issues which resulted in delays to 
the programme and, at times, intermittent operational activity.

Once the start-up commissioning issues had been successfully 
resolved the well was initially brought online at choked-back, 
moderate rates to test for flow assurance at varying levels of 
production. At a controlled rate of 2 million cubic feet of gas per 
day and 100 barrels of oil per day (an average of 433 boepd) the 
well flowed continuously and surface flow assurance efforts 
proved successful.

As flow rates were increased above those levels, well performance 
became limited by freshwater pumping capacity and was 
subsequently impacted by the formation of down-hole salt 
precipitate. The precipitate, which blocked and was subsequently 
cleared multiple times, impacted the well’s flow capacity to 
achieve extended higher rates. The Group was in early stages of 
testing higher rates when its mandated flaring limits were reached. 

The operational team is assessing whether the precipitate issue 
is a function of continued flow back of injected completion 
fluids or a function of normal flowing conditions. Under either 
scenario, the Group has planned mitigation solutions in place 
and plans to test these solutions in the coming months (subject 
to regulatory approvals and gas export availability) in order to 
fully determine the potential of the reservoir at this location.

Working interest acquisition, WSU restructuring and 
acreage acquisition
As outlined above, we continue to take a number of steps to 
strengthen the Paradox project land position which will be 
critical for the long-term success of the project.

In February 2023, Zephyr announced that it had completed its 
acquisition of the remaining 25% working interest in the core 
acreage of the Paradox project from Rockies Standard Oil 
Company LLC (“RSOC”).  

The total consideration payable for the working interest is up to 
US$3 million, payable by way of the issue of new Ordinary 
Shares of 0.1 pence each in the capital of the Company at a 
price of 6.05 pence per new Ordinary Share, representing a circa 
11% premium to the Company’s mid-market closing share price 
on 20 December 2022.

••   A first tranche of 13,483,095 new Ordinary Shares was issued 

to RSOC on the completion of the acquisition; and

••   A second tranche of 26,966,189 new Ordinary Shares will be 

issued upon Zephyr’s final investment decision with respect to 
the contract award to a primary contractor to commence 
construction activities to make the Powerline Road gas 
processing plant operational.

The acquisition provided an immediate opportunity for Zephyr 
to consolidate its working interest in the core acreage of the 
Paradox project and includes the following assets:

••   The remaining 25% interest in the State 16-2 well (with an 

estimated NPV-10 of US$3.1 million);

••   The remaining 25% interest in the State 36-2 well; and

••   Zephyr retains its 100% ownership in the infrastructure assets 

acquired in 2022.

15

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChief Executive Officer’s report and operating review

The acquisition was also immediately accretive across all reserve 
and resource categories. Zephyr’s technical team estimated that 
the acquisition adds:

••   Over 450,000 barrels of oil equivalent (“boe”) in 2P Reserves;

••   Over 7 million boe in 2C Contingent Resources; and

••   Over 67 million boe of 2U unrisked Prospective Resources.

In late 2022, the Group announced the acquisition of additional 
Paradox Basin acreage adjacent to its WSU deemed by the 
Board to have immediate development potential. 

The acquired acreage was largely covered by Zephyr’s existing 
3D seismic, and directly bordered the Zephyr lease on which the 
State 36-2 and State 36-2R wells are located, and with access to 
pre-existing surface infrastructure which Zephyr subsequently 
acquired.

A portion of the acquired acreage was envisioned to be added 
to the WSU, subject to approval from the U.S. Bureau of Land 
Management (the “BLM”) for which the Group applied in early 
2023. In July 2023, Zephyr announced that this approval was 
granted as part of larger expansion/contraction amendment of 
the WSU. As part of the approval, 5,000 high-graded acres with 
near-term development potential were added to the WSU, and 
roughly 5,395 acres deemed by the Group to be less suitable for 
future development were relinquished.

These actions are part of the Group’s active and ongoing portfolio 
management of its project position. The Board is pleased with its 
ongoing BLM interactions which resulted in an amended federal 
unit with an upgraded and manageable acreage position - a position 
increasingly difficult to replicate in today’s regulatory and 
political environment.  

In August 2023, the Group announced an agreement to increase 
its land position through the targeted acquisition of an additional 
640 leased acres deemed by the Group to be prospective for 
mid to long-term development.

The new acreage is on Utah School and Institutional Trust Lands 
Administration (“SITLA”) lands and was secured during a SITLA 
auction. The acreage is close to the Group’s existing WSU and 
gas export infrastructure.

Greentown wells
In July 2023, the Group announced that it had commenced an 
assessment of five existing wellbores (located in the WSU) 
acquired as part of a larger acquisition of infrastructure assets in 
2022. Several of the existing wells are former producers of 
hydrocarbons and were subsequently shut-in due to lack of 
operating infrastructure. Others were deemed to have potential 
future use as salt water disposal wells or as producers of salt 
water brine for potential extraction of lithium resources.

16

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChief Executive Officer’s report and operating review

As part of this assessment, Zephyr commenced production 
from the Greentown Federal 28-11 well (the “28-11 well”) in order 
to understand the well’s potential contribution to overall field 
production when ongoing field infrastructure work has been 
completed. Hydrocarbons were produced from the well, with 
condensate volumes collected for sale and natural gas volumes 
being flared within mandated limits. 

Historically, the 28-11 well produced over 0.36 billion cubic feet 
(“bcf”) of gas and 93,000 barrels of oil prior to being shut-in due 
to a pipeline shut-down. 

Farm-in to Salt Wash helium field
In October 2023, the Group announced that it had opted to 
farm-in to the Salt Wash Field to increase the Group’s oil and gas 
resource potential, and to achieve exposure to the U.S. industrial 
helium market. The farm-in is to a minimum 75% working interest 
in a 1,047-acre leasehold position in the Salt Wash Field which 
lies three miles to the south of the Group’s WSU. The Board 
views the farm-in as a natural extension to the Paradox project.

The field has an already discovered, proven helium resource in the 
Leadville Formation, with further opportunity for upside through 
two deeper helium exploration targets.

The Group’s management forecasts the Salt Wash project to include:

••   Net helium discovered resource potential of 0.07 to 0.19 bcf 

(Lower Leadville Formation only);

••   Net helium un-risked, prospective resource of a further 0.04 

to 0.66 bcf (including exploration targets); and

••   An estimated net present value at a 10% discount rate 

(“NPV-10”) of circa US$58 million with the risked upside case 
having an NPV-10 of circa US$120 million (using US$650 per 
thousand standard cubic feet (“mscf”) and US$750/mscf 
pricing, respectively).

Under the terms of the farm-in agreement, payments totalling 
US$0.6 million were made to the incumbent leaseholder and it is 
the Group’s intention that the dual-purpose Leadville Formation 
delineation well (the “Commitment Well”) will be drilled. The 
Commitment Well would also test the two  additional helium 
exploration targets and other potential hydrocarbon bearing 
reservoirs. The Group expects to partner with industry participants 
to help finance the Commitment Well and appraise and fund the 
potential of this resource while also taking advantage of our 
regional knowledge, existing operations and asset platform.

Dominion pipeline availability
In September 2023, the Group was notified by Dominion that its 
gas supply pipeline from the Northwest Gas Pipeline system to 
the Green River area was operational.

17

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChief Executive Officer’s report and operating review

Williston project – non-operated asset
Overview
In 2021, Zephyr stated that one of its key goals was to establish 
production and positive cashflow either through its existing 
portfolio (the Paradox project), via acquisition, or through a 
combination of both. The Williston project, following 14 discrete 
acquisitions, continues to deliver on this goal with 2023 production 
of circa 1,040 boepd, net to Zephyr, and corresponding revenues of 
circa US$25 million for the year. 

At 31 March 2024, Zephyr had working interests in 230 wells that 
were available for production. The working interests are in prime 
locations, and the majority of the wells are operated by Chord 
Energy Corporation, a leading Williston Basin producer.

The Group’s non-operated portfolio continues to perform above 
the Board’s initial expectations, and the cashflow from the portfolio 
proved to be critical in 2023 as the Group managed the fallout from 
the well control issue on the State 36-2 well.

The Group will continue to develop and grow its non-operated 
portfolio through opportunistic acquisitions.

2023 summary and outlook
2023 production from the non-operated portfolio averaged circa 
1,040 boepd net to Zephyr, down from 1,410 boepd in 2022. 2023 
full-year production was lower than in the previous year due to 
the standard decline of the portfolio and delays to the six Slawson 
wells coming online in which Zephyr has significant working interests.

2023 revenues were US$25.2 million, compared to US$41.1 
million in 2022, impacted by the aforementioned decline as well 
as a substantially lower commodity price environment. The 
average realised price per barrel of oil was US$78 in 2023, with  
a fully blended realised price of circa US$65 per boe (including 
gas and NGLs). Average operating expenditure in 2023 was  
US$19.93 per barrel demonstrating the high margins available on 
the Williston project production in the recent pricing environment.

At 31 December 2023, 225 wells in the portfolio were available 
for production, and net working interests across the Williston 
Basin non-operated portfolio averaged 8% per well, equivalent  
to 15.1 total wells net to Zephyr, all of which utilised horizontal 
drilling and modern, hydraulically stimulated completions.

The Slawson wells are expected to give a boost to production  
in 2024. The average daily production rate from the portfolio in 
March 2024 was 1,212 boepd (versus 1,053 boepd in the fourth 
quarter of 2023), reflecting the impact from the Slawson wells 
being online, albeit not at full capacity. At the date of this report, 
production information indicates that the wells remain partially 
curtailed, likely due to gas infrastructure constraints.

18

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChief Executive Officer’s report and operating review

Slawson wells
In December 2022, Zephyr announced the acquisition of working 
interests in the six Slawson wells (equivalent to 1.1 total well) near 
to Zephyr’s existing non-operated working interests for a total 
consideration of US$2.9 million. In addition, Zephyr paid the 
US$8.9 million capital expenditure (“CAPEX”) associated with  
the working interests to bring the wells into production. 

The wells are operated by Slawson, a top-tier operator and one of 
the largest private companies in the Williston Basin. Slawson was 
an early pioneer of horizontal development in the Williston Basin 
and has excellent access to oilfield service companies and 
infrastructure.

Zephyr’s working interest in the six new wells ranges from 11% to 
32% and management estimates 2P Reserves acquired are circa 
550,000 boe, net to Zephyr.

These new wells were originally expected to provide a sizeable 
production boost to the Group in the 2023 financial year (having 
been spud in November 2022 and expected online in the first half 
of 2023). However, delays were experienced due to issues with 
the completion of surface facilities on the well pad. The wells 
eventually came online on 1 November 2023 with initial flow rates 
exceeding management expectations, with production data 
adjusted for uptime showing an average flow rate of 897 boepd, 
net to Zephyr during the wells initial month of production.

Production from the Slawson wells was subsequently temporarily 
curtailed in mid-December 2023 due to adverse weather conditions 
and infrastructure constraints, and production resumed in late 
January 2024. At the date of this report, the wells are currently 
producing albeit not at full capacity as they remain partially 
curtailed likely due to gas infrastructure constraints.

While the delays in production from the Slawson wells has been 
frustrating, management believes that performance from the 
wells will ultimately meet expectations, with an increase to the 
Group’s overall production expected in 2024 as a result of 
production from the wells

Further production additions
During February 2024, ten wells in which Zephyr holds working 
interests and which are operated by Continental Resources 
(Harms Federal and Quale Federal) were placed in production. 
Early production data shows these wells performing ahead of 
management expectations, adding initial production rates, net 
to Zephyr, of circa 75 boepd.

Hedging
In May 2023, the Board elected to enter into additional oil hedge 
agreements given that most of the hedges acquired in 2022 had 
since crystallised. Volumes hedged for the nine months ending 
31 December 2023 were increased from 94,000 barrels (“bbls”) 
to 137,000 bbls, at an average hedged production price of 
US$84.76 per barrel of oil, with BP Energy Company (“BP”), one 
of the world’s leading energy trading houses, continuing to serve 
as the counterparty. 

At 31 December 2023, the Group had hedged 27,000 barrels of 
oil over the first quarter of 2024 at a weighted-average price of 
US$82.20 per barrel of oil. In April 2024, a further 76,000 barrels 
of oil were hedged over the remainder of 2024. 40,500 barrels 
of oil were hedged at a price of US$80.91, with the remaining 
35,500 barrels of oil being hedged by way of financial collars 
which enable the Group to lock-in a minimum price for these 
barrels. Of these, 26,500 will give the Group a minimum price  
of US$74 per barrel of oil with the remaining 9,000 guaranteeing 
a floor price of US$69 per barrel of oil.

Corporate
In June 2023, the Company raised gross proceeds of US$3.9 million 
(£3.2 million) by way of a placing of 90 million new Ordinary 
Shares of 0.1 pence each in the Company at a price of 3.5 pence 
per new Ordinary Share which was supported by a range of 
existing institutional and other investors, including Premier Miton. 

During the period the Group strengthened its team in the U.S. 
through the appointment or promotion of several key individuals 
including:

••   Andy Lee - appointed Chief Financial Officer (U.S.)

••   Heather Hatfield - appointed  Chief Accounting Officer

••   Ryan Walter - promoted to  Vice President - Operations

All three officers are based in Denver, Colorado.

In April 2024, the Company issued a total of 61,503,028 share 
options to Directors, certain employees and consultants of 
Zephyr, either to reflect historic awards under the Company’s 
Long-Term Incentive Plan, bonuses for performances achieved 
in 2021 and 2022, to satisfy employee contractual commitments 
or commitments in lieu of deferred remuneration and fees from 
2020, during the COVID-19 pandemic.

In May 2024, the Company retired US$3.88 million of existing 
debt through the issuance of US$3.88 million of equity 
comprised of 64,045,768 new Ordinary Shares of 0.1 pence 
each in the Company at a price of 4.85 pence per new Ordinary 
Share. The issue price of the Ordinary shares was the 
undiscounted mid-market closing price of the Company’s 
Ordinary Shares on 2 May 2024.

19

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportChief Executive Officer’s report and operating review

The Ordinary Shares were issued to SGR Investments LLC (“SGRI”), 
a US-based institutional investor. In December 2022, SGRI 
provided debt funding to Zephyr Williston LLC, one of the Group’s 
subsidiaries, to enable it to acquire the Slawson wells. 

In May 2024, the Group announced that it had been awarded an 
additional US$250,000 of non-dilutive grant funding from the 
U.S. Department of Energy (the “DOE”) for operations on the 
State 36-2R well. This brings the total DOE grant funding made 
available to the Group to US$3.65 million in recent years.

The grant is administered by the University of Utah’s Energy & 
Geoscience Institute (“EGI”). Zephyr’s technical team continues 
to work closely with the EGI, the Utah Geological Survey and 
other Utah-based partners in utilising DOE research funds to fully 
evaluate the potential overall productivity of the Paradox Basin.

In June 2024, the Group announced a new $5.6 million term 
loan. The new term loan will amortise monthly over four years 
and has an interest rate of 10% per annum. Proceeds from the 
new term loan were used to repay the 12% SGRI loan, which has 
now been fully repaid. 

Significant decisions made

During the period under review, the Directors made several discrete 
commercial decisions to ensure the continued growth of the 
business and, particularly, the advancement of the Paradox project.

The most significant decisions were the approvals required in 
respect of the State 36-2R well drill, the equity fundraise in  
June 2023 and the debt for equity exchange in May 2024. All key 
decisions were unanimously deemed by Board members to be 
in the best interests of the Group. Details of these items can be 
found in the relevant sections of this Annual Report.

Outlook

We are off to a strong start in the 2024 financial year with the 
successful drilling operation at the 36-2R well and the increased 
production performance from the Williston project now that the 
Slawson wells are online.

Over the last few months, we have witnessed the value and 
benefit of our two-tiered operating model with our non-operated 
asset portfolio providing essential funds for growth of the Group 
as a whole, and we look forward to the rest of the year with 
confidence. 

We would like to thank all Shareholders for their continued support.

JC Harrington 
Chief Executive Officer

26 June 2024

20

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportEnvironmental, Social and Governance (“ESG”)

Robust management of ESG matters is at the heart of what we 
do and how we work. The Board is unanimously committed to 
ensuring that every action and investment decision the Group 
makes is in line with our core values of being responsible 
stewards of investors’ capital and responsible stewards of the 
environment. 

This includes the following points of focus:

••   Protecting the Group, safeguarding its existing asset base and 

positioning it for attractive growth opportunities;

••   Seeking creative and beneficial funding opportunities to 

unlock value from our existing asset portfolio, as evidenced by 
the U.S. Government funding we  received for our drilling 
programme on the Paradox project;

••   Adopting a disciplined focus on growth via the acquisition of 
producing or near-term development opportunities in the 
Rocky Mountain region. In the current economic climate, we 
believe that attractive, value-additive acquisitions are available 
and may be acquired using non-traditional funding structures;

Environmental

Protection of the environment and robust environmental 
management are of primary importance to the Board. The 
Company is committed to minimising its environmental impact 
through positive actions and to protect the surroundings in 
which we operate. 

We are committed to:

••   Limit our own carbon emissions through our VERs credit 
programme with a goal to mitigate all Scope 1 carbon 
emissions;

••   Comply with applicable environmental laws, regulations and 

standards of the U.S. where we operate;

••   Operate in a safe manner to avoid spills, leaks or accidental 

discharges of polluting materials;

••   Evaluate and utilise new technologies, such as solar and 

battery powered control systems at our operated projects;

••   Minimise our land footprint by utilising efficient pad design 

••   Tight financial controls and cash preservation which will enable 

and co-location of wells;

the Group to continue trading effectively; and

••   Continuing to ensure management and the Board are aligned 
with our Shareholders through significant ownership of shares.

••   Promote efficiency in our use of energy and water with the 

aim of conserving natural resources;

••   Ensure that environmental accidents, incidents, near misses 

and non-compliances are reported and investigated, and that 
corrective and preventive actions are implemented as rapidly 
as possible;

••   Monitor and evaluate our own and contractor proficiency and 
conduct periodic audits to ensure our controls are effective 
and that environmental standards are being achieved; and

••   Reporting transparently on our environmental performance 
and the status of our environmental objectives and targets.

The Board is proud of how Zephyr conducted its operations in 
the period under review, and particularly the response to the well 
control issue on the State 36-2 well, and we will always strive to 
adhere to our core values. 

A major milestone was achieved when Zephyr announced its 
intention to achieve carbon-neutrality across its Scope 1 
operational footprint in 2021 and the Group continues to  
strive for this throughout the 2023 financial year.

21

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportSocial

Contributing to the communities in which we work is important to 
the Board. It is essential that the Group conducts its operations in 
such a way as to minimise the potential impact from our 
activities and deliver positive outcomes in the communities  
in which we operate.

We are committed to: 

••   Complying with applicable social laws, regulations, and good 

international industry practices;

••   Be active participants in our local communities and, in 

particular, to be supporters of land and grassland conservation 
projects in those communities;

••   Establishing suitable platforms to share all requisite information 
regarding our operations with different stakeholders, including 
local communities, and promoting dialogue and constructive 
engagement;

••   Devising and implementing transparent and fair grievance 

mechanisms for the communities in which we operate and for 
our workforce, ensuring that grievances are recorded, 
investigated and responded to in a timely manner; and

••   Supporting our colleagues in creating an inclusive and safe 

environment for them to work.

Health and safety

Zephyr has a zero-harm safety culture focused on continuous 
improvement to achieve an injury-free and safe work environment. 
It is the Group’s policy to provide working environments which 
are safe and without risk to health and provide information, 
instruction, training and supervision to ensure the health and 
safety of its employees. The Board is proud to report that during 
the period there were no Lost Time Injuries (“LTIs”).

Environmental, Social and Governance (“ESG”)

As an integral part of this undertaking, Zephyr is collaborating 
with Prax, a British multinational independent oil refining, trading, 
storage, distribution and retail conglomerate dealing in crude oil, 
petroleum products and bio-fuels. Prax, which is headquartered 
in London and also has trading offices in Singapore and the  
U.S., has worked with Zephyr to measure, reduce and mitigate 
greenhouse gas emissions across Zephyr’s businesses, with 
mitigation efforts primarily focused on the purchase of VERs 
from reputable pre-vetted developers of sustainable projects. 
This exercise includes Zephyr’s non-operated production assets 
in the Williston Basin, North Dakota, U.S., and Paradox project 
activity.  

An excellent example of the type of mitigation project 
supported by Zephyr is through the Group’s purchase of VERs 
from a landfill gas capture / combustion project in South Jordan, 
Utah. The project is overseen by third-party verifier NSF 
Certification LLC.

The South Jordan Landfill is a 200-acre sanitary municipal solid 
waste landfill in the Salt Lake area of Utah which has been in 
operation for 50 years. The landfill gas capture and combustion 
project commenced in 2005 and utilises a sophisticated gas 
collection and control system (“GCCS”) which in turn fuels three 
1.6MW generator engines. The new system replaced an open 
flare process which had been utilised as the previous product 
destruction process at the site.

In addition to a significant reduction in greenhouse gas 
emissions resulting from the project’s methane capture 
processes, the project provides the following multi-faceted 
co-benefits:

••   Increased safety by avoiding methane migration, an issue that 

many older landfills encounter;

••   Controls of odours and destroys toxic compounds that can 

exist in landfills;

••   Reduction of emissions of volatile organic compounds and 

other local pollutants;

••   Reduction of methane levels in groundwater are reduced, 

resulting in cleaner water and air;

••   Conversion of waste into energy, and is a top renewable 

energy source; and

••   Creation of construction, operations and maintenance jobs in 
the state of Utah, the state in which Zephyr conducts all of its 
operations.

22

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportFinancial review

The 2023 financial year was characterised by further 
investment in both the Paradox and the Williston projects.

Profitability and liquidity were down from the prior year primarily 
due to delays in the Slawson wells coming online, the State 36-2 
well drilling costs and the associated well control issue.

With the Slawson wells now online, profitability is expected to 
increase again in the 2024 financial year.

Income statement

During the year ended 31 December 2023, the Group generated 
revenue of US$25.2 million (2022: US$41.1 million), and reported  
a gross profit of US$7.2 million (2022: US$22.4 million), which 
includes a gain of US$0.4 million (2022: US$1.8 million) in respect 
of the Group’s hedging programme. 

Administrative expenses for the year were US$6 million (2022: 
US$4.8 million). The increase from the 2022 financial year 
highlights the expansion of the Group’s operational footprint to 
provide it with the capacity and capability to develop, manage 
and grow its operated and non-operated asset portfolios. The 
increase also reflects expenditure incurred in appraising new 
opportunities and other business development costs.

The Group reports foreign exchange losses of US$2.8 million for 
the year (2022: gain of US$6.1 million) which is predominantly in 
respect of unrealised losses on the restatement of intercompany 
loans between the Company and its subsidiaries. These losses 
arise due to the strength of sterling against the U.S. dollar at the 
end of 2023.

Finance charges of US$3.5 million (2022: US$2.2 million) have 
been charged in respect of interest charges and associated costs 
relating to the Group’s borrowings and unwinding of discount on 
decommissioning. See note 7.

During the year ended 31 December 2023, the Group has 
recognised a deferred tax credit, and a corresponding reduction in 
its net deferred tax liability, of US$1.6 million relating to unrelieved 
tax losses and temporary timing differences arising in the U.S. 
businesses (2022: US$2 million)

The Group reports a net loss after tax of US$3.5 million or  
a loss of 0.21 cents per Ordinary Share for the year ended  
31 December 2023 (2022: net profit US$19.3 million or a profit  
of 1.26 cents per Ordinary Share). 

Balance sheet

Total investment in the Group’s exploration and evaluation assets 
as at 31 December 2023 was US$50 million (2022: US$38 million) 
reflecting the ongoing investment in the Paradox project.

Total investment in property, plant and equipment as at 31 December 
2023 was US$50.8 million (2022: US$51.8 million) reflecting 
depreciation, depletion and amortisation, decommissioning 
obligations and a working-interest disposal on the non-operated 
asset portfolio.

At 31 December 2023, the Group has recognised US$0.3 million 
(2022: 1.3 million) outstanding derivative contracts in respect  
of its hedging programme at fair value, of which US$ nil (2022: 
US$0.2 million) has been recognised in non-current assets and 
US$0.3 million (2022: US$1.1 million) in current assets.

Trade and other receivables have increased by US$3.3 million, 
primarily due to a provision of US$2.9 million in respect of 
insurance recoveries relating to the well incident which had not 
yet been recovered at 31 December 2023. These proceeds have 
subsequently been received since the year end. See note 17.

Cash and cash equivalents as at 31 December 2023 were  
US$3.6 million (2022: US$9 million). During the year, the Company 
raised gross proceeds of US$3.9 million (2022: US$17.4 million) 
through the placing of new Ordinary Shares in the Company. 

The Group’s borrowings as at 31 December 2023 were 
US$35.4million (2022: US$25.4 million). The increase in 
borrowings over the year reflects the CAPEX for drilling 
operations on the Paradox project. The rise in borrowings was 
necessitated by the delay in the Slawson wells coming online.

Subsequent developments

In April 2024, the Company issued a total of 61,503,028 share 
options to Directors, certain employees and consultants of 
Zephyr, either to reflect historic awards under the Company’s 
Long-Term Incentive Plan, bonuses for performances achieved 
in 2021 and 2022 (the “Bonus Scheme”), to satisfy employee 
contractual commitments or commitments in lieu of deferred 
remuneration and fees from 2020, during the COVID-19 pandemic.

In May 2024 the Company retired US$3.88 million of existing 
debt through the issuance of US$3.88 million of equity comprised 
of 64,045,768 new Ordinary Shares of 0.1 pence each in the 
Company at a price of 4.85 pence per new Ordinary Share.  
The issue price of the Ordinary Shares was the undiscounted 
mid-market closing price of the Company’s Ordinary Shares  
on 2 May 2024.

In June 2024, the Group announced that it had fully repaid the 
remaining US$6 million of the loan that it had with SGRI. This 
was achieved largely through utilising proceeds from a new 
US$5.6 million amortising term loan with First International Bank 
& Trust (“FIBT”).

At 18 June 2024, the Group had cash and cash equivalents of 
US$2.5 million.

23

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic report 
Financial review

Key performance indicators

As part of Zephyr’s ongoing development of the Paradox project and the build-out of the non-operated portfolio in the Williston 
Basin, the Board tracks its performance against indicators that reflect the strategic, operational and financial progress, as well as our 
impact on society and the environment. These indicators allow the Board, management and stakeholders to compare Zephyr’s 
performance to its goals.

Safety performance

Why we measure 

Performance

•• 

•• 

 The Group has a zero-harm safety 
culture focused on continuous 
improvement to achieve an injury-free 
and safe work environment

•• 

•• 

 We require employees and contractors 
to work in a safe and responsible 
manner and provide them with the 
training and equipment to do so

 There were no reported LTIs during the 2023 
financial year (2022: nil)

 The Group experienced a well control issue in the 
2023 financial year while drilling the State 36-2 
well. The incident was professionally managed and 
did not result in any LTIs or long-term damage to 
the environment

Adjusted EBIDA 

Profit before tax adjusted  
for DD&A, finance costs, 
unrealised foreign exchange 
gains / losses and unrealised 
hedge gains / losses

Net production 

•• 

 Indicator of the Group’s cash 
generation to fund expenditures and/
or return capital to Shareholders

•• 

•• 

 Indicator of revenue generation 
potential 

 Measure of progress towards 
achieving production forecasts and 
driving profitable production growth

Growth of Paradox project 
reserve / resource play

•• 

 Indicator of economic viability and 
long-term production potential of 
projects

•• 

•• 

•• 

•• 

•• 

•• 

•• 

•• 

•• 

 2023 Adjusted EBITDA was US$11.8 million

 2022 Adjusted EBITDA was US$28.7 million

 The difference between the Adjusted EBITDA for 
2023 and the prior year was primarily the result of 
the standard production decline of the non-operated 
asset portfolio, lower commodity prices in the year 
and delays to the six Slawson wells coming online

 2023 production of 407,600 boe.

 21% decrease in production from 2022 production 
of 514,650 boe

 Decrease primarily the result of the standard 
production decline of the non-operated asset 
portfolio, lower commodity prices in the year and 
delays to the six Slawson wells coming online

 No changes to the Paradox reserves / resources 
during the year

 It is expected that a revised Competent Persons 
Report on the Paradox project will be prepared in 
the second half of 2024

 At 31 December 2023, the Group had Paradox 
Basin 2P reserves of 2.6 mmboe, 2C resources of 
circa 34 mmboe and 2U resources of 270 mmboe

Carbon emissions 

•• 

 Zephyr Energy is committed to 
sustainable and responsible oil and 
gas production 

•• 

•• 

 Pursued Scope 1 carbon-neutrality from both 
operated and non-operated assets

 VERs credit partnership with Prax which aims  
to mitigate all Scope 1 carbon emissions

CJ Eadie 
Group Finance Director

26 June 2024

24

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic report 
 
Principal risks and uncertainties

There are a number of key potential risks and uncertainties 
which the Board believes could have a material impact on 
Zephyr’s long-term performance and could cause actual 
results to differ from expected and historical results. The Board 
considers these risks during its regular meetings and discussions. 

The principal risks and uncertainties that the Group faces are:

Non-financial risks
••   Changes in government law or regulatory policy in the U.S. 

could materially affect the rights and title to the interests held 
by the Group, and the operations and financial condition of the 
Group could be adversely affected. The Group is in continual 
proactive dialogue with both its UK and U.S. regulators to 
ensure ongoing compliance with its obligations.

•   Climate related issues remain at the forefront of Board 

conversations and decisions. While climate-related opportunities 
continue to emerge in this rapidly evolving area, the Board 
recognises that these issues also present a risk to Zephyr that 
environmental regulations, climate change concerns, and 
investor driven change may result in (i) increases to the cost 
of doing business, (ii) hinder our ability to continue executing 
our strategy, or (iii) restrict access to certain markets or investors.

••   Zephyr is dependent on the continued services and 

performances of its core management team. The loss of key 
personnel could have an impact on our ability to meet our 
strategic objectives. The Remuneration Committee reviews 
the employment terms for executives and key operational 
management with the aim of attracting, motivating and 
retaining key personnel for the Group. The Committee has also 
engaged an external, independent consultant to benchmark 
compensation against similarly sized industry group peers.
••   Potential impacts from a lack of adherence to health and 

safety policies may result in fines and penalties, serious injury 
or death, environmental impacts, statutory liability for 
environmental redemption and other financial and reputational 
consequences that could be significant. Effectively managing 
Health and Safety Risk exposure is the top priority for the Board 
and management team which regularly review health and 
safety programmes and mitigations. Health and safety training 
is included as part of all staff and contractor inductions. 
Detailed training on our field manual procedures has been 
provided to key stakeholders to ensure processes and procedures 
are embedded throughout the organisation and all operations.

••   The results from the ongoing drilling campaign and 

production testing on the Paradox project will have a 
significant impact for the Group. Poor results from the wells 
could have wider implications on the future development of 
the project. The Board is ensuring that all activities are 
appropriately planned and the technical team has undertaken 
a thorough review of geological and technical risks.

••   There is execution and geological risk on the Paradox wells. 

The wells are deep, drilled in over pressured reservoirs, and will 
at times be hydraulically stimulated to deliver commercial 
production. The well control incident experienced in 2023 was 
a stark reminder of the complexity of drilling in the Paradox 
Basin and of the associated execution risk. The Group’s technical 
team has considerable experience of working on this project. 

 In addition, the service industry is very well developed in the 
U.S. and the Group will only engage experienced contractors 
and service providers with detailed knowledge of relevant 
hydraulic stimulation techniques.

••   There is operational risk associated with the availability  
of transportation, processing and marketing services for 
hydrocarbons produced from the Paradox wells. The Group’s 
wells are located in a relatively remote area with limited 
midstream infrastructure and few service providers. The 
unavailability of any given service or the availability of service 
at uneconomic terms could have material implications for the 
scale and timing to develop the project. The Group’s technical 
team is actively engaged in discussions with service providers 
and evaluating alternative solutions.

 ••  Cybersecurity risks for companies have increased significantly 

in recent years due to the mounting threat and increased 
sophistication of cybercrime. A cybersecurity breach, incident 
or failure of our IT systems could disrupt our businesses, put 
employees at risk, result in the disclosure of confidential 
information, damage our reputation and create significant 
financial and legal exposure. Employees are our first line of 
defence against these attacks and we promote secure 
behaviours to help mitigate this growing risk. We engage with 
key technology partners and suppliers to ensure potentially 
vulnerable systems are identified and secured.

Financial risks
••   There is a risk that the carrying value of the Group’s assets 
will not be recovered through future revenues, leading to 
impairment losses. The Group manages the recoverability of 
its assets and assesses the economic viability throughout the 
exploration, development and production phases.

••   Commodity risk. The activities of the Group are subject to 

fluctuations in prices and demand for commodities, which are 
volatile and cannot be controlled. Fluctuating commodity prices 
could have a significant impact on the Group’s operations. 
During 2022, the Group implemented a hedging programme 
to manage the potential downside risks in fluctuating commodity 
pricing. This hedging programme is expected to enable the 
Group to meet its ongoing funding obligations.

••   Currency risk. Funds are maintained by the Group in Great Britain 
Pounds sterling (“GBP”) and United States dollars (“US$”). There is 
a risk that purchasing power in the U.S. is lost through foreign 
exchange translation. The Group considers its foreign exchange 
risk to be a normal and acceptable business exposure and does 
not hedge against the risk at present.

••   Funding risk. There is a risk that there will be insufficient access 
to funding to meet all corporate, development and production 
obligations and activities. The Group manages liquidity risk by 
maintaining adequate cash reserves and carefully monitoring 
forecast and actual cashflows. The Board reviews the Group’s 
cashflow projections and forecasts on a monthly basis. The 
Board has a strong track record in capital market fundraisings 
and has excellent relationships with its debt providers. 

•   Borrowing risk. There is a risk that the Group will not meet the 

terms of the covenant as required under the terms of its 
borrowings from FIBT and this could impact upon the Group’s 
borrowing capacity. The Group was in full compliance with the 
terms of the covenant in the periods reported.

25

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic report 
S172(1) statement 
Statement by the Directors in performance of their statutory duties in  
accordance with S172(1) and 414CZA of the UK Companies Act 2006

The Board of Directors of Zephyr Energy plc, both individually 
and together, have acted in good faith, in a way they consider 
would be most likely to promote the success of the Company 
for the benefit of its members as a whole (having regard to the 
stakeholders and matters set out in S172 of Companies Act 2006).

The Board defines its stakeholders as the many individuals and 
organisations that are affected by our operations and with whom 
we seek to proactively and positively engage on a regular basis. 
We strive to maintain productive, mutually beneficial relationships 
with each stakeholder group by treating all stakeholders with 
fairness and respect and by providing timely and effective 
responses and information.

Engaging our stakeholders informs our decision-making, 
including consideration of our long-term strategic objectives 
and the activities that support these aims. 

Our engagement with stakeholders includes personal contact 
via face-to-face or telephone conversation, email exchange, 
social media, company reports, press releases, investor 
presentations or conference participation and other company 
engagement.

As the operator of long-life assets, we naturally make decisions 
that consider the long-term success of Zephyr and value 
creation for our stakeholders. 

The following is a summary of stakeholder engagements  
from 2023 and the period since.

Stakeholder engagement

Equity and debt investors
The Board seeks to understand and meet investor needs and 
expectations. It has established a strategy and business model 
which it believes will promote long-term value to investors. The 
Company’s details are displayed on its website allowing investors 
to contact the Company if they so wish. The Board attaches 
great importance to providing investors with clear and transparent 
information on the Group’s activities and strategy. Details of all 
communications are provided on the Company’s website, 
including historical annual reports, press releases, company 
presentations and governance related material. 

The major interests in the Company’s Ordinary Shares are set 
out in the Directors’ report. Through our regulatory updates  
and the publication of our half and full year financial reports,  
we inform Shareholders regarding the status of their Company. 
Further Shareholder engagement includes the Annual General 
Meeting (“AGM”) and discussions with investors when questions 
are asked.

Employees
Our employees are essential to the Group’s success and growth. 
We recognise that we need a skilled and committed workforce, 
with a diverse range of experience and perspectives, and we 
value the diversity and the contribution that it affords.

The Board believes that the Group’s success is reliant on the 
commitment of our employees. We pride ourselves on our 
friendly and safe working environment. Employee feedback is 
sought through formal review processes and via the head of 
each department. Training is provided where necessary. 

Governments and regulators
Executive and operational management engage with federal, 
state and local regulators to address legislative, regulatory and 
operational matters important to our business and our industry. 
We also proactively engage with regulatory agencies throughout 
the year to keep them appraised of our operational and well 
retirement activities and to provide objective and measurable 
progress indicators. 

Our transparency in engagement and delivering on expectations 
were two key considerations in the state of Utah when dealing 
with the well control incident that we experienced in April 2023. 

Communities
We actively seek to support sustainable socio-economic 
development in the communities in which we live and work and aim 
to minimise any potential negative impacts from our operations.

Environment
The Group fully recognises its obligation to minimise its impact 
on the environment and to be responsible in all its activities.  
This is currently achieved by complying with regulatory standards 
and support of certain environmentally focussed charities. 

More information on how the Company considers and discharges 
its obligations in respect of S172 Companies Act 2006 in respect 
of its stakeholders can be found in the Governance section of 
this document (page 27) and in respect of the environment at 
the relevant section above.

The Strategic report on pages 1 to 26 was approved by the 
Board on 26 June 2024.

On behalf of the Board,

JC Harrington 
Chief Executive Officer

On a monthly basis we provide financial and operational updates 
to our primary commercial debt provider.

26 June 2024

26

Zephyr Energy plc Annual Report and Financial Statements 2023  Strategic reportZephyr Energy plc Annual Report and Financial Statements 2023

Governance

28
Board of Directors 
29
Senior management 
30
Corporate governance statement 
Directors’ report 
35
Statement of Directors’ responsibilities  39
40
Independent auditor’s report 

“ As a Board we strive to 
ensure that our governance 
standards meet best 
practice, and it is a privilege  
to work with this Board 
which is committed to 
maintaining high standards 
of corporate governance. “

2727

Board of Directors     

Rick Grant
NON-EXECUTIVE 
CHAIRMAN

Rick has a 40-year track 
record of success in the oil 
and gas industry. Rick is 
co-founder and Chairman 
of Origin Creek Energy LLC 
(“OCE”). OCE makes 
US$2-US$20 million 
foundational investments 
in the domestic U.S. energy 
sector. The firm’s capital is 
provided by its partners and 
two affiliated family offices. 

Prior to OCE, Rick was CEO 
of Suez North America LNG 
and then served as CEO of 
Suez Global LNG. During 
his career, Rick has had 
significant success 
managing multi-billion 
dollar organisations and 
developments, and has been 
involved in a number of 
profitable corporate exits.

Colin Harrington
CHIEF EXECUTIVE 
OFFICER

Colin began his career in 
energy finance in 1998, and 
previously worked in New 
York, London, Washington 
DC and San Francisco. Over 
the course of his investment 
banking and investment 
management career, he has 
had significant experience 
executing recapitalisations 
and turnarounds at natural 
resource companies. 

Prior to Zephyr, Colin served 
as CEO of OCE, a special 
situations investor in the 
onshore US oil and gas 
sector. Prior to that, Colin 
was Managing Partner of 
the Wellford Energy Group 
and former CEO of 
Wellford Capital Markets, a 
FINRA-registered broker 
dealer boutique which 
specialised in the energy 
markets.

Chris Eadie
GROUP FINANCE 
DIRECTOR AND 
COMPANY SECRETARY

Chris is an experienced 
Finance Director with 
extensive corporate finance 
experience within both public 
and private companies in 
the natural resources sector.

Chris qualified as a 
Chartered Accountant with 
PricewaterhouseCoopers 
after which he held a number 
of senior finance positions 
at Cable and Wireless PLC.

Prior to joining Zephyr, Chris 
was, amongst other things, 
Finance Director of AIM 
listed Aurum Mining PLC, and 
was involved in the wholesale 
restructuring of the 
Company into Shearwater 
Group PLC, the AIM listed 
cybersecurity and risk 
management company.

Gordon Stein
NON-EXECUTIVE 
DIRECTOR

Tom Reynolds
NON-EXECUTIVE 
DIRECTOR 

Tom is a chartered Chemical 
Engineer with 25 years 
experience in the energy 
sector spanning executive 
management of private 
and public E&P companies, 
private equity investment 
and advising early stage 
companies. He is currently 
the CEO of Scirocco Energy.

Tom led two public E&P 
companies between 
2008-2016 – Bridge Energy 
ASA and Iona Energy Inc. 
– providing him with a 
broad range of North Sea 
experience including cross 
border mergers, IPOs, 
acquisitions & disposals, 
the Nordic bond market, 
debt restructuring and 
investor relations in London, 
Oslo and Toronto. 

Gordon is a commercial 
CFO with over 30 years  
of expertise in the energy, 
natural resources and other 
sectors. A member of the 
Chartered Institute of Public 
Finance & Accountancy, 
Gordon is currently CFO of 
CleanTech Lithium plc, an 
exploration and development 
company advancing the next 
generation of sustainable 
lithium projects in Chile.

Previously, Gordon was the 
CFO and an Executive 
Director of Columbus Energy 
Resources plc, an AIM-traded 
oil and gas company, CFO 
of AIM-traded Madagascar 
Oil Limited and has also been 
CFO of Cadogan Petroleum 
plc an independent oil and 
gas exploration, development 
and production company 
with onshore gas and 
condensate assets in Ukraine. 
Prior to that, Gordon held a 
number of other roles in the 
energy sector at start-ups 
to major companies.

28

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceSenior management

Andy Lee
CHIEF FINANCIAL 
OFFICER (U.S.)

Andy has over 25 years of 
energy experience and 
began his career as a drilling 
engineer for ExxonMobil 
working in Wyoming, West 
Texas, Gulf of Mexico, and 
Norway. He later moved to 
the finance side of the 
industry where he worked in 
roles such as public equity 
analyst, private equity 
investor and M&A principal.

Most recently, Andy was 
President and co-founder  
of Cat Canyon Resources,  
where he raised investment 
funds to acquire and 
develop a heavy oil field. 
Under his tenure, Cat 
Canyon commenced an 
active horizontal drilling 
programme and grew from 
California’s 19th largest oil 
company to the 10th largest 
in less than three years.

Andy holds a BS degree in 
Mechanical Engineering and 
Political Science from MIT 
and an MBA from The 
Wharton School.

Gregor Maxwell
CHIEF OPERATING 
OFFICER

Gregor has a PhD in  
Reservoir Geology, with  
25 years experience 
spanning production to 
new ventures roles.

Previously Gregor has 
worked with Apache, 
Rocksource and Chevron. 
He is now responsible for 
spearheading ZPHR analytics 
and technical approach.

Ryan Walter 
VP OF OPERATIONS

Ryan holds a Bachelor of 
Science in Mechanical 
Engineering from Purdue 
University and has over a 
decade of experience in 
the oil and gas industry.

 Prior to Zephyr, Ryan served 
as a Senior Operations 
Engineer and  Joint Interest 
Supervisor at Whiting 
Petroleum, where he 
supported operations in 
both the Williston Basin 
and DJ Basin.

Jorge Gutierrez
EVP GENERAL 
COUNSEL

Heather Hatfield
CHIEF ACCOUNTING 
OFFICER

 Jorge has oversight of the 
Company’s legal affairs.  

 He previously worked for 
over 15 years in private 
practice in Dallas, Texas 
with an emphasis in 
representing private and 
publicly traded companies 
operating in the upstream 
and midstream sectors of 
the energy industry. He is 
admitted to practice law  
in the State of Texas.

Prior to joining Zephyr 
Heather served as the Chief 
Accounting Officer at Cat 
Canyon Resources, LLC. from 
June 2019 to October 2023. 
She served as Controller at 
Elk Petroleum from 2018 to 
2019.  From 2014 to 2018 she 
served as Chief Accounting 
Officer at Venoco, LLC and 
from 2013 to 2014 she 
served as Internal Audit 
Director at Venoco. Heather 
began her career in public 
accounting and worked at 
Grant Thornton from 2008 
until 2013 in various roles, 
including, Advisory Services 
Senior Manager.

Heather is a certified public 
accountant and holds a 
Bachelor of Arts degree in 
business and accounting 
from Western State College 
of Colorado and a Masters 
of Accountancy from the 
University of Denver.

29

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceCorporate governance statement

As a Board we strive to ensure that our governance standards 
meet best practice, and it is a privilege to work with a Board 
committed to maintaining high standards of corporate 
governance. As Chairman of Zephyr, my role is to provide 
leadership, ensuring that the Board performs its role effectively 
and has the capacity, ability, structure, corporate governance 
systems and support to enable it to continue to do so.

The Group’s success is directly linked to sound and effective 
governance and we remain committed to achieving high 
standards in everything we do.

The Directors recognise the importance of strong corporate 
governance and have developed a corporate governance framework 
and policies appropriate to the size of the Group. As the Group 
grows, the Directors and management will continue to review and 
adjust our approach and make ongoing improvements to the 
Group’s corporate governance framework and policies and 
procedures as part of building a successful and sustainable company. 
Good governance creates the opportunity for appropriate decisions 
to be made by the right people at the right time to support the 
delivery of our strategy and manage any risks associated with 
delivery of that strategy.

Zephyr follows the requirements of the QCA Corporate Governance 
Code (the “Code”) published by the Quoted Companies Alliance 
in April 2018, a full version of which is available at  
http://www.theqca.com.  

The QCA launched an updated version of the Code in November 
2023. The revised Code gives greater prominence to themes which 
are increasingly relevant to business practices and investor focus 
such as Director remuneration, succession and contingency planning, 
risk management and Board independence and composition. 

The QCA has recommended that companies start applying the 
revised Code in respect of accounting periods commencing on or 
after 1 April 2024. So, while the revised Code will not apply to 
Zephyr until the 2025 financial year, the Board is fully cognisant of 
the revised Code and will be looking to implement the new 
aspects of the Code over the coming months where appropriate.

All members of the Board believe strongly in the value and 
importance of good corporate governance and in our accountability 
to all of Zephyr stakeholders, including Shareholders, staff, clients, 
suppliers and the Governments and regulators of the countries 
in which we operate.  

The corporate governance framework which the Group operates, 
including Board leadership and effectiveness, Board remuneration, 
and internal control is based upon practices which the Board believes 
are proportional to the size, risks, complexity and operations of 
the business and is reflective of the Group’s values.

The Board continually assesses its corporate governance processes 
to ensure that Zephyr continues to comply with best practice as 
outlined in the Code. No major corporate governance issues arose 
during the year under review.

The Code is constructed around ten broad principles and a set of 
disclosures. The Code states what it considers to be appropriate 
arrangements for growing companies and asks companies to 
provide an explanation about how they are meeting the principles 
through the prescribed disclosures. We have considered how we 
apply each principle to the extent that the Board judges these to be 
appropriate in the circumstances, and we provide an explanation 
of the approach taken in relation to each principle on our website 
and a summary is set out below. 

RL Grant 
Non-Executive Chairman

26 June 2024

30

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceCorporate governance statement

The Board and its committees

The Board is responsible for the direction and overall 
performance of the Group with an emphasis on policy and 
strategy, financial results and major operational issues.

Formal Board meetings are scheduled, on average, every four to 
six weeks with regular contact between meetings as required. 
During the year there were ten formal Board meetings, in addition 
to regular informal Board discussions, and each of the formal 
meetings was attended by every Director. The meetings are held 
to monitor and implement strategy, to review performance 
(including cash forecasts and ESG compliance), potential 
acquisitions, fundraising activity and to consider communications 
to the London Stock Exchange and Shareholders. 

During the year, the matters reserved for the Board’s decision 
have been reviewed and reaffirmed. Specific matters for the 
Board’s consideration include:

••   Approval of the Group’s strategic plan;

••   Review of the performance of the Group’s strategy, objectives, 

business plans and budgets;

••   Review and assess the Group’s sustainability and ESG goals, 

including the Group’s carbon neutral programme;

••   Approval of the Group’s operating and capital expenditure 

budgets and any material changes to them;

••   Review of material changes to the Group’s corporate structure 

and management and control structure; 

••   Review of changes to governance and business policies; 

••   Monitoring efforts related to community and stakeholder 

engagement;

••   Ensuring an effective system of internal control and risk 

management; 

••   Ensure that appropriate succession planning procedures 

are in-place;

••   Approval of annual and interim reports and accounts, and 

preliminary announcements of year-end results; and 

••   Review of the effectiveness of the Board and its committees.

There is also an established procedure for all Directors to take 
independent professional advice, if necessary, at the Group’s 
expense. Additionally, all Directors have access to the advice  
of the Group’s advisers. The Group maintains Directors’ and 
Officers’ liability insurance.

The Board members are mindful of the need to keep skills  
and experience up to date which is done through a combination 
of training, continuing professional development through 
professional bodies, reading and on the job experience.

All Directors are expected to devote such time as is necessary 
for the proper performance of their duties. Directors are 
expected to prioritise and attend Board meetings and any 
additional meetings wherever possible. 

Details of Directors who served during the year are set out in  
the Directors’ Report. The Board is currently comprised of two 
Executive Directors and three Non-Executive Directors, one  
of whom acts as Chairman. There are separate roles for the 
Chairman and the Chief Executive Officer.

The Board has established an Audit Committee, which comprises 
of two Non-Executive Directors. The Audit Committee meets 
two or three times a year and the Group’s external auditor is 
invited to meetings where appropriate. The main responsibilities 
of the Audit Committee are to review and report to the Board on 
matters relating to:

••   The integrity of the financial statements of the Group, 

including its annual and interim accounts;

••   The effectiveness of the Group’s internal controls and risk 

management systems;

••   The accounting policies and practices of the Group;

••   Audit plans and Auditor’s Report, including any significant 

concerns the external auditor may have arising from their audit 
work; and 

••   The terms of appointment, remuneration and independence 

of the auditor.

The Board also has an established Remuneration Committee, 
which comprises the Non-Executive Chairman and one Non-
Executive Director. The Remuneration Committee meets at 
least twice a year and reviews the performance of the Executive 
Directors and the scale and structure of their remuneration 
having due regard to the interests of our Shareholders. The 
Committee is also responsible for awards under the Group’s 
share option plans. No Director is involved in any decision 
relating to their own remuneration. 

The remuneration of the Non-Executive Directors is determined 
by the Board.

Communication with Shareholders

The Board encourages regular and transparent dialogue with the 
Group’s Shareholders. All Shareholders are invited to the Annual 
General Meeting at which Directors are available for questioning. 
The notice of AGM is sent to all Shareholders at least 21 clear 
days before the meeting. The number of proxy votes received 
for and against each resolution is disclosed at the AGM and a 
separate resolution is proposed on each item. Financial and 
other information about the Group is available on the Group’s 
website www.zephyrplc.com. 

Internal controls 

The Board is responsible for establishing the Group’s system of 
internal controls and for reviewing its effectiveness. Reflecting 
the size of the Group, a key control procedure is the close 
day-to-day supervision of the business by the Executive 
Directors, supported by the senior management with 
responsibility for key tasks and operations. 

31

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceCorporate governance statement

The key procedures that have been established, and which are 
designed to provide effective internal control are as follows:

••   Each of the Group’s subsidiaries is managed by an Executive 

Director and there is a management reporting process in place 
to enable the Board to monitor the performance of the Group 
on a regular basis;

••   Monthly cash forecasts are prepared and formally reviewed 

by the Board; 

••   The Board reviews the major business risks faced by the Group 
and determines the appropriate course of actions required to 
manage those risks;

••   The Board approves proposals for the acquisition of assets or 
new businesses and sets guidelines for the development of 
new properties. Capital expenditure is regulated and written 
proposals must be submitted to the Board for any 
expenditure above specified levels;

••   Consolidated management information is prepared on 

a regular basis; and

••   The Board has regular briefings from the Company’s 

Nominated Adviser and Legal Counsel.

The Board reviews the effectiveness of the system of internal 
controls and the control environment. No significant control 
deficiencies were reported during the year and no weaknesses in 
internal controls have resulted in any material losses, contingencies 
or uncertainty which would require disclosure as recommended 
by the guidance for Directors on reporting on internal controls. 
The Board has reviewed the need for an independent internal 
audit function and has concluded that, at the current time, the 
Group is not yet large enough to warrant this.

As outlined above, the Board adopted the Code in April 2018.  
An overview of the extent of the Group’s compliance with the 
ten principles that comprise the Code, are set out below.

Extent 
of current 
compliance

Fully 
Compliant

Fully 
Compliant

Principle

Establish a strategy 
and business model 
which promote  
long-term value for 
Shareholders

Seek to understand 
and meet 
Shareholder needs 
and expectations

Commentary

A summary of the Group’s business model and strategy can be found in the 
Strategic report within this Annual Report
Key risks and mitigating actions are detailed in the Principal risks section of the 
Strategic report within this Annual Report

Further  
disclosure(s)

Strategic report

The Group remains committed to listening and communicating openly with its 
Shareholders to ensure that its strategy, business model and performance are 
clearly understood. Understanding what stakeholders think about the Group, and 
in turn, helping these audiences understand our business, is a key part of driving 
our business forward and we actively seek dialogue with all stakeholders. We do 
so via regular reporting, investor roadshows, presenting at investor conferences/
webinars and at the Group’s Annual General Meeting. The Group also makes 
regular operational announcements to keep Shareholders and the market 
updated on operational activity and progress. The Group also makes available 
corporate presentations on the ‘Investors’ area on the Group’s website.  
The CEO is primarily responsible for Shareholder liaison

www.zephyrplc.com;
Regulatory updates, 
Annual General 
Meeting, Investor 
presentations and full 
contact details on 
the Group’s website

Fully 
Compliant

Directors and employees adopt a broad view during decision making to take 
meaningful account on of the impact of the business on all key stakeholder 
groups. The Board recognises that Zephyr’s long-term success is reliant on 
good relationships with its key stakeholders

See section on 
stakeholder 
engagement in the 
Strategic report

Fully 
Compliant

The Board operates a comprehensive system of internal controls designed (to the 
extent considered appropriate) to safeguard the Group’s assets and protect the 
business from identified risks, including reputational risk
As well as tight oversight exercised by the Executive Directors, and appropriately 
trained and qualified staff, the Board engages appropriate auditors and consultants 
to assist in identifying and managing risk

Principal risk section 
of the Strategic 
report within the 
Annual Report

Take into account 
wider stakeholder 
and social 
responsibilities and 
their implications for 
long-term success

Embed effective risk 
management, 
considering both 
opportunities and 
threats, throughout 
the organisation

32

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceCorporate governance statement

Extent 
of current 
compliance

Fully 
Compliant

Principle

Maintain the Board 
as a well-functioning, 
balanced team led 
by the Chair

Fully 
Compliant

Ensure that between 
them the Directors 
have the necessary 
up-to-date 
experience, skills 
and capabilities

Fully 
Compliant

Evaluate Board 
performance based 
on clear and relevant 
objectives, seeking 
continuous 
improvement

Promote a culture 
that is based on 
ethical values and 
behaviours

Fully 
Compliant

Commentary

The Board comprises the Non-Executive Chairman, two Executive Directors and 
two Non-Executive Directors (both of which are considered by the Board to be 
independent). One of the Non-Executive Directors, GB Stein, acts as the Group’s 
Senior Independent Director
The Board is constantly reviewing its make up to ensure that it has a sufficient 
blend between independence on the one hand, and knowledge of the Group on 
the other, to enable it to discharge its duties and responsibilities effectively
All Directors are encouraged to use their independent judgement and to 
challenge all matters, whether strategic or operational. The Chairman holds 
regular update meetings with each Director to ensure they are performing as 
they are required. Board meetings take place, on average, every 4 to 6 weeks, 
normally held by telephone conference owing to the diverse geographic 
locations of the Board members

The Board is satisfied that, between the Directors, it has an effective and 
appropriate balance of skills and experience, including in the areas of exploration, 
development and production of oil and gas assets. All Directors receive regular 
and timely information on the Group’s operational and financial performance. 
Relevant information is circulated to the Directors in advance of meetings. All 
Directors retire by rotation at regular intervals in accordance with the Group’s 
Articles of Association
The Board makes decisions regarding the appointment and removal of Directors, 
and there is a formal, rigorous procedure for appointments. The Group’s Articles 
of Association require that one-third of the Directors must stand for re-election 
by Shareholders annually in rotation; that all Directors must stand for re-election 
at least once every three years; and that any new Directors appointed during the 
year must stand for election at the AGM immediately following their 
appointment
All Directors are able to take independent professional advice in the furtherance 
of their duties, if necessary, at the Group’s expense. In addition, the Directors 
have direct access to the advice and services of the Company Secretary and 
Finance Director

The Chairman continually assesses the contribution of each member of the 
Board to ensure that:
•  Their contribution is relevant and effective
• 

 That they have a commitment to progressing the Group’s objectives in order 
to increase Shareholder value

•  Where relevant, they have maintained their independence
Given the Group’s ongoing expansion, the Board (led by the Chair) is constantly 
reviewing the performance and structure of the team as a unit and to ensure 
that the members of the Board collectively function in an efficient and 
productive manner

Further  
disclosure(s)

See Governance 
section of Annual 
Report for full details 
on the Board 
structure

See Governance 
section of Annual 
Report for full details 
on the Board 
structure

Key Performance 
Indicators in the 
Strategic report

The Board aims to lead by example and do what is in the best interests of 
the Group
The Board spends a significant amount of time formulating and agreeing on 
the core principles and values under which Zephyr will operate. In short, Zephyr’s 
team will always strive to be responsible stewards of its investors’ capital and 
responsible stewards of the environment in which we work. We believe that 
good environmental performance, together with good governance practices, 
will translate into good business performance and therefore are focused on 
delivering strong economic returns in the most environmentally responsible 
manner practical  

Chairman’s 
statement
Strategic report
Corporate 
governance 
statement

33

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceCorporate governance statement

Extent 
of current 
compliance

Fully 
Compliant

Principle

Maintain governance 
structures and 
processes that are 
fit for purpose and 
support good 
decision-making by 
the Board

Fully 
Compliant

Communicate how 
the Group is 
governed and is 
performing by 
maintaining a 
dialogue with 
Shareholders and 
other relevant 
stakeholders

• 

JC Harrington 
Chief Executive Officer

26 June 2024

34

Further  
disclosure(s)

Corporate 
governance 
statement

Commentary

The Board meets regularly for both formal Board meetings and for informal 
discussions
The Board sets direction for the Group through a schedule of matters reserved 
for its decision. The Board and its Committees receive appropriate and timely 
information prior to each meeting; a formal agenda is produced for each 
meeting, and Board and Committee papers are distributed several days before 
meetings take place. Any Director may challenge the Group’s proposals and 
decisions are taken democratically after discussion. Any Director who feels that 
any concern remains unresolved after discussion may ask for that concern to be 
noted in the minutes of the meeting, which are then circulated to all Directors. 
Any specific actions arising from such meetings are agreed by the Board or 
relevant Committee and then followed up by the Group’s management
The Executive Team consists of the Chief Executive Officer and the Financial Director 
with input from the other Directors. They are responsible for formulation of the 
proposed strategic focus for submission to the Board, the day-to-day management 
of the Group’s businesses and its overall trading, operational and financial performance 
in fulfilment of that strategy, as well as plans and budgets approved by the Board of 
Directors. It also manages and oversees key risks, management development and 
corporate responsibility programmes. The Chief Executive Officer reports to the plc 
Board on issues, progress and recommendations for change. The controls applied 
by the Executive Team to financial and non-financial matters are set out earlier in 
this document, and the effectiveness of these controls is regularly reported to the 
Audit Committee and the Board
The Board is supported by the Audit and Remuneration Committees. Each 
Committee has access to such resources, information and advice as it deems 
necessary, at the cost of the Group, to enable the committee to discharge its duties
The Audit Committee is Chaired by the Senior Independent Director, GB Stein. 
The Non-Executive Director, TH Reynolds, is the other member of the Committee
The Remuneration Committee is Chaired by the Senior Independent Director, TH 
Reynolds. The Non-Executive Chairman, RL Grant, is the other member of the Committee

The Group communicates with Shareholders through the Annual Report, full-year 
and half-year announcements, the AGM and one-to-one meetings with large existing 
or potential new Shareholders. The Group also keeps Shareholders updated on 
progress and developments through its regular market announcements. The 
CEO remains a key part of encouraging Shareholder interaction and listening to 
feedback. A range of corporate information (including all group announcements 
and presentations) is also available to Shareholders, investors and the public on 
the Company’s website;www.zephyrplc.com
The Board receives regular updates on the views of Shareholders through briefings 
and reports from the Chief Executive Officer, Group Finance Director and the 
Group’s brokers. The Group communicates with institutional investors frequently 
through briefings with management. In addition, analysts’ notes and brokers’ 
briefings are reviewed to achieve a wide understanding of investors’ views
The Group’s website includes the following:
• 

 Disclosure of any instances where a significant proportion of votes (e.g. 20% 
of independent votes) have been cast against a resolution at any general 
meeting, an explanation of what actions the Group intends to take to 
understand the reasons behind that vote result, and, where appropriate, any 
different action it has taken, or will take, as a result of the vote
 Historical annual reports and other governance-related material, including 
notices of all general meetings over the last five years

www.zephyrplc.com

Zephyr Energy plc Annual Report and Financial Statements 2023  Governance 
Directors’ report

The Directors present the Annual Report and financial 
statements of the Group for the year ended 31 December 2023. 

Dividends

The Directors do not recommend the payment of a dividend for 
the year ended 31 December 2023 (2022: nil).

Directors

The Directors who held office during the year, and since the year 
end are as follows: 

JC Harrington  
RL Grant  
TH Reynolds  
GB Stein  
CJ Eadie 

Directors’ remuneration

In late 2021 and into early 2022, Zephyr’s independent Directors 
commissioned an independent third-party review of Executive 
Directors’ compensation. The purpose of engaging an independent 
subject matter expert was to conduct a detailed review of the 
remuneration arrangements to ensure that they are appropriate 
in light of the performance of the business and our current 
strategy. The Remuneration Committee therefore engaged 
Focussed Independent Tailored Remuneration Consultants 
(“FIT”) to advise on the Company’s remuneration strategy and 
make any recommendations on any changes to the 
previous practices.  

Of particular importance was the need to ensure that compensation 
structures are capable of delivering competitive rewards in the 
U.S., where the majority of Zephyr’s executives and employees 
are based, whilst meeting the expectations of our UK investor 
base in terms of the design and structure of the arrangements 
and ensuring the interests of our Shareholders and executives 
are aligned.

FIT compared Zephyr’s Executive Director remuneration policies 
with around a dozen peer group oil and gas companies (as agreed 
by the Remuneration Committee) in each of the UK and U.S., 
reviewing base salary, pensions, medical expenses, bonuses and 
other long-term incentivisation schemes. This was then presented 
to the Remuneration Committee who discussed and agreed to 
implement various recommendations to address differences 
between current remuneration practices at Zephyr and the 
relevant peer group companies.  

The key conclusions of the independent third-party review were that: 

••   The levels of total remuneration for the Executive Directors, 

specifically with respect to the CEO and CFO, were competitive 
with industry market peers (of the same size) in the UK, but 
were below the lowest quartile in talent markets in the U.S.; and

••   Market base salary levels in the UK and U.S. are broadly 

comparable and so the key differentiator is levels of variable 
pay opportunity, which is higher in the U.S.

In addition to the review, the Independent Directors also noted 
that whilst there is no intention to match U.S. levels of remuneration 
for our Executive Directors, the compensation structure may 
prevent us from being able to attract candidates with the skills 
and experience necessary to continue the Group’s success in the 
U.S. in the future. Continuing efforts will be made to ensure the 
remuneration of our Executive Directors remains competitive 
with market peers in the U.S. while meeting the expectations of 
our UK investor base and, if future increases in total remuneration 
are warranted, those increases should be primarily delivered 
through long-term incentive structures.

The Executive Directors also recently undertook a review of 
Non-Executive Director (“NED”) fees in conjunction with FIT. 
FIT compared the fees paid at other peer group companies 
recognising the time incurred by Zephyr’s NEDs who were 
involved in a significant number of Board Meetings and Board 
update calls, the many Merger and Acquisition (“M&A”) transactions 
which the Board reviewed and approved in 2022, as well as the 
Committee Meetings required to address various matters. NED 
fees were therefore amended in early 2023 to reflect the 
findings of the study and the extra time involvement for the 
NEDs in carrying out their duties on the Zephyr Board.

35

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceDirectors’ report

Remuneration paid to Directors during the year was as follows:

Executive Directors

JC Harrington

CJ Eadie

Non-Executive Directors

RL Grant

TH Reynolds

GB Stein

1  Salaries include benefits-in-kind 

2  Discretionary bonuses relating to performance in FY 2022, paid in January 2023

Executive Directors

JC Harrington

CJ Eadie

Non-Executive Directors

RL Grant

TH Reynolds

GB Stein

1  Salaries include benefits-in-kind  
2  Discretionary bonuses relating to performance in FY 2021, paid in January 2022

Directors’ interests in shares and share options

The Directors who held office at 31 December 2023 had the 
following interests, including family interests, in the Ordinary 
Shares of the Company as follows:

36

2023

Salaries1
 taken
US$’000

522

230

100

81

81

Bonus2
US$’000

Pension
US$’000

Total
US$’000

250

109

-

-

-

50

22

-

-

-

822

361

100

81

81

1,014

359

72

1,445

2022

Salaries1
 taken
US$’000

Bonus2
US$’000

Pension
US$’000

Total
US$’000

500

217

65

44

44

870

207

93

25

25

25

375

34

13

1

-

-

48

741

323

91

69

69

1,293

CJ Eadie

JC Harrington

TH Reynolds
GB Stein
RL Grant

Number of Ordinary Shares 

31 December 
2023

1 January 2023

7,229,640

6,775,095

160,408,4821

138,590,3001

1,000,000
2,350,000
1,500,0001

1,000,000
2,350,000
1,500,0001

1   JC Harrington is indirectly the controlling shareholder of Origin Creek Energy 
LLC (“OCE”) which was the beneficial owner of 158,954,546 shares at 31 
December 2023. RL Grant is a 19% shareholder of OCE

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceDirectors’ report

Directors’ interests in share options of the Company, including family interests, as at 31 December 2023 were as follows:

CJ Eadie
CJ Eadie
CJ Eadie
CJ Eadie
JC Harrington
TH Reynolds
TH Reynolds
RL Grant
RL Grant
GB Stein
GB Stein

 Date of grant    

13 Feb 2015
24 Mar 2017 
6 April 2018
29 May 2020
29 May 2020
29 May 2020
29 May 2020
29 May 2020
29 May 2020
29 May 2020
29 May 2020

No. of 
shares 

100,000
500,000
1,300,000
6,000,000
12,000,000
2,000,000
818,181
3,000,000
1,353,363
2,000,000
545,455

Exercise 
price

182.5p
14.0p
3.5p
0.6p
0.6p
0.6p
0.1p
0.6p
0.1p
0.6p
0.1p

Option exercise period

13/03/16 to 12/03/25
24/04/17 to 23/04/27
06/04/19 to 05/04/28
29/05/21 to 28/05/31
29/05/21 to 28/05/31
29/05/21 to 28/05/31
29/05/21 to 28/5/27
29/05/21 to 28/05/31
29/05/21 to 28/5/27
29/05/21 to 28/05/31
29/05/21 to 28/5/27

Third party indemnity provision for Directors

The Company currently has in place, and had for the year ended 
31 December 2023, Directors and Officers liability insurance for 
the benefit of all Directors of the Company.

Governance

Governance matters are set out on pages 27 to 46.

Substantial shareholdings

Other than the Directors’ interests shown above, the Company 
has been notified of the following substantial interests as at 24 
June 20241:

Number 
of shares

Percentage  
of issued 
share capital

Tyndall Investment Management 195,293,650

Origin Creek Energy LLC

158,954,546

SGR Investments LLC

64,045,768

11.2%

9.1%

3.7%

1  As per most recent notification to the Company

Going Concern

The Directors have prepared cashflow forecasts for the Group and 
the Parent Company for the period to 31 December 2025 based 
on their assessment of both the discretionary and the non-
discretionary cash requirements of the Group during this period 
and based on a range of sensitivities and scenarios. 

These cashflow forecasts include the forecast revenues from, and 
the operating costs of, the Group’s operations, together with all 
committed development expenditure and cashflows related to 
the drilling of the State 36-2R well and the expected insurance 
recoveries from the drilling operations. As disclosed in note 13, a 
well incident happened during the year which led to the drilling of 

the new State 36-2R well. The Group has comprehensive well 
control insurance coverage and the Board expects to recover 
insurance proceeds from the well incident for the cost of drilling 
the new State 36-2R well. Should the insurance proceeds be 
delayed or lower than expected, the Group could require further 
funding to meet its commitments within the going concern 
assessment period.

In addition, as at 31 December 2023, the Group and the Parent 
Company had existing borrowings that are payable within 12 
months (current) from the end of the reporting period. To meet this 
obligation, the Group and the Parent Company will require debt 
refinancing of existing borrowings or raising of additional funding. 

As such, the Group and the Parent Company’s ability to continue 
as going concerns is dependent on securing insurance proceeds 
and debt refinancing of existing borrowings or raising additional 
funding which are not guaranteed. This indicates the existence of 
a material uncertainty which may cast significant doubt over the 
Group and the Parent Company’s ability to continue as going 
concerns, and therefore, the Group and the Parent Company may 
be unable to realise their assets and discharge their liabilities in the 
normal course of business.

Following detailed discussions, the Directors are confident that the 
Group and the Parent Company will be able to secure insurance 
recoveries as per above, refinance their existing borrowings and 
raise additional funding to enable the Group and the Parent 
Company  to continue in operation for at least the next twelve 
months from the date of approval of the financial statements. The 
Directors have extensive experience in raising capital for projects 
and ventures and remain confident in the Group and the Parent 
Company’s ability to raise the capital needed to maintain and 
deliver on its commitments and continue as a going concern.

The Directors continue to adopt the going concern basis in 
preparing the financial statements. The financial statements do 
not include any adjustments that would be required should the 
going concern basis of preparation no longer be appropriate.

37

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceDirectors’ report

Post balance sheet events

Auditor

Events after the balance sheet date have been disclosed in note 
29 to the financial statements. 

BDO LLP served as the Group’s external auditor throughout the 
year under review. 

Financial instruments

During the year the Company and its subsidiary undertakings 
applied financial risk management policies as disclosed in note 
27 to the financial statements.

Disclosure of information to the auditor 

The Directors who held office at the date of approval of this 
Directors’ report confirm that, so far as they are each aware, 
there is no relevant audit information of which the Company’s 
auditor is unaware; and each Director has taken all the steps that 
he ought to have taken as a Director in order to make himself 
aware of any relevant audit information and to establish that the 
Company’s auditor is aware of that information.

The Directors resolved that BDO LLP be re-appointed as auditor. 
BDO LLP has indicated its willingness to continue in office.

On behalf of the Board,

CJ Eadie 
Group Finance Director

26 June 2024

38

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceStatement of Directors’ responsibilities 
in respect of the Strategic report, the Directors’ report  
and the financial statements

The Directors are responsible for preparing the Strategic report 
and the Directors’ report and the financial statements in 
accordance with applicable law and regulations.

Company law requires the Directors to prepare group and company 
financial statements for each financial year. The Directors have 
elected under company law and the AIM Rules of the London 
Stock Exchange to prepare group financial statements in 
accordance with UK-adopted International Accounting Standards 
in conformity with the requirements of the Companies Act 2006 
and have elected under company law to prepare the Company 
financial statements in accordance with International Accounting 
Standards in conformity with the requirements of the 
Companies Act 2006 and applicable law.

The Group and the Company financial statements are required 
by law and International Accounting Standards in conformity 
with the requirements of the Companies Act 2006 to present 
fairly the financial position of the Group and the Company and 
the financial performance of the Group. The Companies Act 2006 
provides in relation to such financial statements that references 
in the relevant part of that Act to financial statements giving a 
true and fair view are references to their achieving a fair presentation.

Under company law the Directors must not approve the financial 
statements unless they are satisfied that they give a true and fair 
view of the state of affairs of the Group and the Company and 
of the profit or loss of the Group for that period. 

In preparing each of the Group and Company financial statements, 
the Directors are required to:

a.   Select suitable accounting policies and then apply them 

consistently;

b.   Make judgements and accounting estimates that are 

reasonable and prudent;

c.   State whether they have been prepared in accordance with 

UK-adopted International Accounting Standards in 
conformity with the requirements of the Companies Act 
2006; and

d.   Prepare the financial statements on the going concern basis 
unless it is inappropriate to presume that the Group and the 
Company will continue in business.

The Directors are responsible for keeping adequate accounting 
records that are sufficient to show and explain the Group’s and 
the Company’s transactions and disclose with reasonable accuracy 
at any time the financial position of the Group and the Company 
and enable them to ensure that the financial statements comply 
with the Companies Act 2006. They are also responsible for 
safeguarding the assets of the Group and the Company and 
hence for taking reasonable steps for the prevention and 
detection of fraud and other irregularities.

The Directors are responsible for the maintenance and integrity 
of the corporate and financial information included on the 
Zephyr Energy plc website. Legislation in the United Kingdom 
governing the preparation and dissemination of financial 
statements may differ from legislation in other jurisdictions.

39

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceIndependent auditor’s report  
to the members of Zephyr Energy plc

Opinion on the financial statements

Material uncertainty related to going concern

In our opinion:

••   The financial statements give a true and fair view of the state 
of the Group’s and of the Parent Company’s affairs as at 31 
December 2023 and of the Group’s loss for the year then 
ended;

••   The Group financial statements have been properly prepared 
in accordance with UK-adopted international accounting 
standards;

••   The Parent Company financial statements have been properly 

prepared in accordance with UK- adopted international 
accounting standards and as applied in accordance with the 
provisions of the Companies Act 2006; and

••   The financial statements have been prepared in accordance 

with the requirements of the Companies Act 2006.

We have audited the financial statements of Zephyr Energy plc 
(the “Parent Company”) and its subsidiaries (the “Group”) for the 
year ended 31 December 2023 which comprise the consolidated 
income statement, the consolidated statement of 
comprehensive income, the consolidated balance sheet, the 
consolidated statement of changes in equity, the consolidated 
cash flow statement, the Company balance sheet, the Company 
statement of changes in equity, the Company cash flow 
statement and the notes to the financial statements, including a 
summary of material accounting policies. 

The financial reporting framework that has been applied in their 
preparation is applicable law and UK adopted international 
accounting standards and, as regards the Parent Company 
financial statements, as applied in accordance with the 
provisions of the Companies Act 2006.

Basis for opinion

We conducted our audit in accordance with International 
Standards on Auditing (UK) (ISAs (UK)) and applicable law.  
Our responsibilities under those standards are further described 
in the Auditor’s responsibilities for the audit of the financial 
statements section of our report. We believe that the audit 
evidence we have obtained is sufficient and appropriate to 
provide a basis for our opinion.

Independence

We remain independent of the Group and the Parent Company 
in accordance with the ethical requirements that are relevant to 
our audit of the financial statements in the UK, including the 
FRC’s Ethical Standard as applied to listed entities, and we have 
fulfilled our other ethical responsibilities in accordance with 
these requirements.

We draw your attention to note 3 of the financial statements, 
which explains that the Group’s and the Parent Company’s ability 
to continue as going concerns is dependent on securing 
insurance proceeds and debt refinancing of existing borrowings 
or raising additional funding which are not guaranteed. As stated 
in note 3, these events or conditions, along with other matters 
as set forth in note 3 indicate that a material uncertainty exists 
that may cast significant doubt on the Group’s and the Parent 
Company’s ability to continue as going concerns. Our opinion is 
not modified in respect of this matter.

We have determined going concern to be a key audit matter as a 
result of the judgements and estimates made by the Directors 
and significance of this area. Our evaluation of the Directors’ 
assessment of the Group’s and the Parent Company’s ability to 
continue to adopt the going concern basis of accounting and 
our response to this key audit matter is set out below:

••   Obtaining and evaluating the Board papers assessing going 
concern for the forecast period, the assessment of risks and 
uncertainties and the supporting cashflow forecasts prepared 
by Directors. We formed our own assessment of risks and 
uncertainties based on our understanding of the business  
and the oil and gas sector; 

••   Reviewing evidence on the planned borrowings, including 

related correspondences;

••   Assessing the appropriateness of the period over which going 
concern is being assessed against the requirements of the 
applicable standard;

••   Assessing Directors’ base case cash flow forecast and the 

underlying key assumptions which have been approved by the 
Board and the mathematical accuracy of such. In doing so, we 
considered metrics affecting the future cash flows, such as 
operating costs, production, forecast oil prices and capital 
expenditure commitments approved by the Board against 
actual performance for the year 2023 and the forecasts 
prepared by Directors;

••   Agreeing the recent available cash position to bank account 

statements;

••    Obtaining and assessing the sensitivity analysis reflecting 

adverse scenarios by applying a lower than forecast oil price or 
lower than forecast production;

••   Reviewing correspondence after the reporting date regarding 
the expected insurance recoveries related to the drilling of 
State 36-2R well to assess the recoverability;

••   Reviewing post year end press releases, Regulatory News 

Services announcements and Board minutes for any indicators 
of obligations or significant adverse issues; and

••    Reviewing and evaluating the adequacy and completeness of 
disclosures in the financial statements in respect of going 
concern based on the evidence obtained through the 
procedures as per above.

40

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceIndependent auditor’s report

In auditing the financial statements, we have concluded that the 
Directors’ use of the going concern basis of accounting in the 
preparation of the financial statements is appropriate. 

Our responsibilities and the responsibilities of the Directors with 
respect to going concern are described in the relevant sections 
of this report.

Overview

Coverage

99% (2022: 100%) of Group loss before tax 

100% (2022: 100%) of Group revenue

100% (2022: 100%) of Group total assets

Key audit  
matters

Carrying value of oil 
and gas properties

Going concern 

2023 
4 

2022
4  

4 

4

Materiality

Group financial statements as a whole

US$1.7 million based on 1.5% of total assets as 
at year end (2022: US$1.5 million based on 1.5% 
of total assets)

An overview of the scope of our audit

Our Group audit was scoped by obtaining an understanding of 
the Group and its environment, including the Group’s system of 
internal control, and assessing the risks of material misstatement 
in the financial statements. We also addressed the risk of 
management override of internal controls, including assessing 
whether there was evidence of bias by the Directors that may 
have represented a risk of material misstatement.

Identification of significant components
The Group’s exploration and producing assets are based in the 
states of North Dakota and Montana, U.S. Our Group audit 
scope focused on the Group’s producing and exploration assets 
to gain sufficient coverage over the Group’s total assets, total 
revenue and profit before tax while considering the audit risks 
identified.

As a result, we determined two significant components which 
were subjected to a full scope audit by the Group audit team: 
Zephyr Energy plc and the U.S. based subsidiary Rose Petroleum 
(US) LLC.

The financial information of the remaining non-significant 
components was principally subject to analytical review 
procedures performed by the Group audit team. 

41

Zephyr Energy plc Annual Report and Financial Statements 2023  Governance 
Independent auditor’s report

Key audit matters
Key audit matters are those matters that, in our professional 
judgement, were of most significance in our audit of the 
financial statements of the current period and include the most 
significant assessed risks of material misstatement (whether or 
not due to fraud) that we identified, including those which had 
the greatest effect on the overall audit strategy, the allocation of 
resources in the audit, and directing the efforts of the 

engagement team. These matters were addressed in the 
context of our audit of the financial statements as a whole, and 
in forming our opinion thereon, and we do not provide a 
separate opinion on these matters. In addition to the matter 
described in the material uncertainty related to going concern 
section above, we determined the matter below to be the key 
audit matter to be communicated in our report.

Key audit matter

Carrying value 
of oil and gas 
properties

Refer to  
notes 3 and 14.

The oil and gas development 
and producing assets form a 
significant part of the Group’s 
statement of financial position. 
Management is required to 
consider if there are any facts 
or circumstances (potential 
impairment indicators) that 
would suggest that the oil and 
gas producing properties would 
be impaired in accordance with 
IAS 36,  “Impairment of assets”. 
Where indicators of impairment 
are identified, impairment testing 
is required to ensure that the 
Group’s assets are carried at 
no more than their recoverable 
amount. Following their 
assessment, management have 
not identified any impairment 
indicators on its oil and gas 
properties.

How the scope of our audit addressed the key audit matter

Our audit procedures in this regard included:

•   Reviewing and assessing management’s allocation of assets to the 
cash-generating unit (“CGU”) for the purpose of the impairment 
indicators assessment;

•   Examining management’s assessment of impairment indicators against 

the requirements of IAS 36 “Impairment of assets”;

•   Assessing the forecast as per economic model for the oil and gas 

properties, included in the CGU by reviewing the pricing information, 
production volumes, operating and transportation costs against the 
forecasts prepared as part of Competent Person’s Report (“CPR”) as 
issued by independent qualified reservoir engineers as management’s 
expert;

•   Performing a review of management’s economic model assumptions, 

challenging the appropriateness of estimates with reference to 
historical data and external evidence where available and assessing the 
related key estimates for potential management bias;

•   Checking the consistency of the reserves and related future cashflows 

with the economic forecasts as per the latest CPR and assessing 
whether the discounted cashflow forecast as per the CPR is consistent 
with the management’s impairment indicators assessment; and

•   Assessing the management’s experts preparing the CPR on the oil and 
gas reserves, particularly focused on the competence and objectivity  
of the expert and the scope of their work to check the CPR was prepared 
under the required guidelines and is appropriate for its intended purpose.

Key observations

Based on procedures performed we found the judgements and estimates applied by management in assessing the oil and gas 
properties for indicators of impairment were appropriate and that their conclusion that there was no impairment as of  
31 December 2023 to be reasonable.

Our application of materiality

We apply the concept of materiality both in planning and 
performing our audit, and in evaluating the effect of 
misstatements. We consider materiality to be the magnitude by 
which misstatements, including omissions, could influence the 
economic decisions of reasonable users that are taken on the 
basis of the financial statements.

In order to reduce to an appropriately low level the probability 
that any misstatements exceed materiality, we use a lower 
materiality level, performance materiality, to determine the 
extent of testing needed. Importantly, misstatements below 
these levels will not necessarily be evaluated as immaterial as we 
also take account of the nature of identified misstatements, and 
the particular circumstances of their occurrence, when 
evaluating their effect on the financial statements as a whole.

42

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceIndependent auditor’s report

Based on our professional judgement, we determined materiality for the financial statements as a whole and performance materiality 
as follows:

Group financial statements

Parent Company financial statements

2023
US$ million

Materiality

1.7

2022
US$ million

1.5

2023
US$ million

0.8

2022
US$ million

0.8

Basis for determining 
materiality

Rationale for the 
benchmark applied

Performance 
materiality

Basis for determining 
performance 
materiality and 
rationale for the 
percentage applied

1.5% of total assets

1.5% of total assets

1.5% of total assets

1.8% of total assets

Given the asset-based 
focus of the business 
with its significant 
exploration asset 
base we considered it 
appropriate to adopt 
a total assets-based 
measure of materiality.

Given the asset-based 
focus of the business 
with its significant 
exploration asset 
base we considered it 
appropriate to adopt 
a total assets-based 
measure of materiality.

Given the asset-based 
focus of the business 
as a holding company 
we considered it 
appropriate to adopt 
a total assets-based 
measure of materiality.

Given the asset-based 
focus of the business 
as a holding company 
we considered it 
appropriate to adopt 
a total assets-based 
measure of materiality.

1.1

0.7

0.6

0.6

70% of materiality (2022: 70%).

Performance materiality was set at 70% based on consideration of factors including the level of historical 
errors and nature of activities.

Component materiality
Component materiality for the U.S. based component Rose 
Petroleum (US) LLC, which represented the only significant 
component other than the Parent Company, was set at US$1.5 
million (2022: US$1.3 million) based on 1.5% of the component’s 
total assets. In the audit of that component, we further applied 
performance materiality levels of 70% of the component 
materiality to our testing to ensure that the risk of errors 
exceeding component materiality was appropriately mitigated.

Reporting threshold
We agreed with the Audit Committee that we would report to 
them all individual audit differences in excess of US$34,000 
(2022: US$30,000). We also agreed to report differences below 
this threshold that, in our view, warranted reporting on 
qualitative grounds.

Other information

The Directors are responsible for the other information. The 
other information comprises the information included in the 
Annual Report other than the financial statements and our 
Auditor’s report thereon. Our opinion on the financial statements 
does not cover the other information and, except to the extent 
otherwise explicitly stated in our report, we do not express any 
form of assurance conclusion thereon. Our responsibility is to 
read the other information and, in doing so, consider whether 
the other information is materially inconsistent with the financial 
statements or our knowledge obtained in the course of the 
audit, or otherwise appears to be materially misstated. If we 
identify such material inconsistencies or apparent material 
misstatements, we are required to determine whether this gives 
rise to a material misstatement in the financial statements 
themselves. If, based on the work we have performed, we 
conclude that there is a material misstatement of this other 
information, we are required to report that fact.

We have nothing to report in this regard.

43

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceIndependent auditor’s report

Other Companies Act 2006 reporting

Based on the responsibilities described below and our work performed during the course of the audit, we are required by the 
Companies Act 2006 and ISAs (UK) to report on certain opinions and matters as described below.

Strategic report 
and Directors’ 
report

In our opinion, based on the work undertaken in the course of the audit:

•   the information given in the Strategic report and the Directors’ report for the financial year for which the 

financial statements are prepared is consistent with the financial statements; and

•    the Strategic report and the Directors’ report have been prepared in accordance with applicable legal 

requirements.

In the light of the knowledge and understanding of the Group and the Parent Company and its environment 
obtained in the course of the audit, we have not identified material misstatement in the Strategic report or  
the Directors’ report. 

Matters on which 
we are required   
to report by 
exception

We have nothing to report in respect of the following matters in relation to which the Companies Act 2006 
requires us to report to you if, in our opinion:

•   adequate accounting records have not been kept by the Parent Company, or returns adequate for our audit 

have not been received from branches not visited by us; or

•    the Parent Company financial statements are not in agreement with the accounting records and returns; or

•   certain disclosures of Directors’ remuneration specified by law are not made; or

•   we have not received all the information and explanations we require for our audit.

44

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceIndependent auditor’s report

Responsibilities of Directors

As explained more fully in the Statement of Directors’ 
responsibilities, the Directors are responsible for the preparation 
of the financial statements and for being satisfied that they give 
a true and fair view, and for such internal control as the Directors 
determine is necessary to enable the preparation of financial 
statements that are free from material misstatement, whether 
due to fraud or error.

In preparing the financial statements, the Directors are 
responsible for assessing the Group’s and the Parent Company’s 
ability to continue as going concerns, disclosing, as applicable, 
matters related to going concern and using the going concern 
basis of accounting unless the Directors either intend to 
liquidate the Group or the Parent Company or to cease 
operations, or have no realistic alternative but to do so.

Auditor’s responsibilities for the audit of the 
financial statements

Our objectives are to obtain reasonable assurance about 
whether the financial statements as a whole are free from 
material misstatement, whether due to fraud or error, and to 
issue an Auditor’s report that includes our opinion. Reasonable 
assurance is a high level of assurance, but is not a guarantee that 
an audit conducted in accordance with ISAs (UK) will always 
detect a material misstatement when it exists. Misstatements 
can arise from fraud or error and are considered material if, 
individually or in the aggregate, they could reasonably be 
expected to influence the economic decisions of users taken on 
the basis of these financial statements.

Extent to which the audit was capable of 
detecting irregularities, including fraud
Irregularities, including fraud, are instances of non-compliance 
with laws and regulations. We design procedures in line with our 
responsibilities, outlined above, to detect material misstatements 
in respect of irregularities, including fraud. The extent to which 
our procedures are capable of detecting irregularities, including 
fraud is detailed below:

Non-compliance with laws and regulations
We obtained an understanding of the legal and regulatory 
frameworks that are applicable to the Group. We determined 
that the most significant which are directly relevant to specific 
assertions in the financial statements are those related to the 
reporting framework (UK-adopted international accounting 
standards, the Companies Act 2006, the AIM rules and the  
QCA Corporate Governance Code), local taxation legislation  
in the countries where the Group operates, and the terms  
and requirements included in the Group’s operating and 
exploration licences. 

Our procedures included the following:

••   We gained an understanding of how the Group is complying 

with those legal and regulatory frameworks by making inquiries 
of management, and those responsible for legal and 
compliance procedures. We corroborated our inquires through 
our review of Board minutes and other supporting 
documentation; and

••   We reviewed the financial statement disclosures and tested to 
supporting documentation to assess compliance with relevant 
laws and regulations noted above.

Fraud
We assessed the susceptibility of the financial statements to 
material misstatement, including fraud. Our risk assessment 
procedures included: 

••   Enquiry with management and those charged with 

governance regarding any known or suspected instances of 
fraud;

••   Obtaining an understanding of the Group’s policies and 

procedures relating to:

  -  Detecting and responding to the risks of fraud; and 

  -  Internal controls established to mitigate risks related to fraud. 

••    Review of minutes of meeting of those charged with 

governance for any known or suspected instances of fraud;

••    Discussion amongst the engagement team as to how and 
where fraud might occur in the financial statements; and

••    Performing analytical procedures to identify any unusual or 
unexpected relationships that may indicate risks of material 
misstatement due to fraud.

45

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceIndependent auditor’s report

Based on our risk assessment, we considered the areas most 
susceptible to fraud to be management override of controls  
and revenue recognition.

Our procedures in respect of the above included:

••   Holding discussions with the audit engagement team as to 

how and where fraud might occur in the financial statements 
and where any potential indicators of fraud may arise in the 
Group in order to consider how our audit strategy should 
reflect our considerations;

••   Testing a sample of journal entries throughout the year, which 

met a defined risk criteria, by agreeing to supporting 
documentation;

••   Testing a random sample of journal entries throughout the 

year for unpredictability, by agreeing to supporting 
documentation;

••    In addition to the key audit matters as per above we assessed 
and challenged key areas of judgement and estimation made 
by management to identify potential management’s bias, 
including management’s assumptions and key estimates 
related to decommissioning liabilities;

••   Agreeing revenue to supporting documentation of monthly 

operators’ revenue statements/joint interest billings to confirm 
volume and pricing, together with evidence regarding the 
receipt of cash;

••   Performing cut-off testing on revenue around the year-end to 
ensure that revenue is recognised in the correct period. This 
included obtaining revenue statements from the operator post 
year-end and verifying the related revenue was recorded in the 
correct period;

••    Inquiring of management and the Audit Committee of known 
or suspected instances of fraud, potential litigation and claims. 
We read minutes of meetings of those charged with 
governance, and reviewed correspondence with local tax and 
regulatory authorities; and

••   Obtaining an understanding of the design and implementation 
of relevant controls surrounding the financial reporting close 
process such as controls over the posting of journals and the 
consolidation process and obtained an understanding of the 
segregation of duties in these processes.

We also communicated relevant identified laws and regulations 
and potential fraud risks to all engagement team members who 
were all deemed to have appropriate competence and 
capabilities and remained alert to any indications of fraud or 
non-compliance with laws and regulations throughout the audit. 

Our audit procedures were designed to respond to risks of 
material misstatement in the financial statements, recognising 
that the risk of not detecting a material misstatement due to 
fraud is higher than the risk of not detecting one resulting from 
error, as fraud may involve deliberate concealment by, for 
example, forgery, misrepresentations or through collusion. There 
are inherent limitations in the audit procedures performed and 
the further removed non-compliance with laws and regulations 
is from the events and transactions reflected in the financial 
statements, the less likely we are to become aware of it.

A further description of our responsibilities is available on the 
Financial Reporting Council’s website at: www.frc.org.uk/
auditorsresponsibilities. This description forms part of our 
Auditor’s Report.

Use of our report

This report is made solely to the Parent Company’s members, 
as a body, in accordance with Chapter 3 of Part 16 of the 
Companies Act 2006. Our audit work has been undertaken so 
that we might state to the Parent Company’s members those 
matters we are required to state to them in an auditor’s report 
and for no other purpose. To the fullest extent permitted by law, 
we do not accept or assume responsibility to anyone other than 
the Parent Company and the Parent Company’s members as a 
body, for our audit work, for this report, or for the opinions we 
have formed.

Jack Draycott (Senior Statutory Auditor) 
For and on behalf of BDO LLP,  
Statutory Auditor London, United Kingdom

26 June 2024

46

Zephyr Energy plc Annual Report and Financial Statements 2023  GovernanceZephyr Energy plc Annual Report and Financial Statements 2023

Financial statements

Consolidated income statement 
Consolidated statement of  
comprehensive income 
Consolidated balance sheet 
Consolidated statement of  
changes in equity 
Consolidated cash flow statement 
Company balance sheet 
Company statement of changes  
in equity 
Company cash flow statement 
Notes to the financial statements 

48

49
50

51
52
53

54
55
56

“ The Board remains fully committed  
to the primary goal of opening up  
the next prolific onshore U.S. oil 
and gas play.”

4747

Notes

2023
US$’000

6

25,225

2022
US$’000

41,062

(4,458)

(3,318)

(12,666)

1,781

22,401

(4,834)

(210)

6,102

3

(6,964)

(1,878)

(9,607)

412

7,188

(5,997)

(6)

(2,776)

-

(3,472)

(2,236)

(5,063)

21,226

1,560

(3,503)

(1,955)

19,271

(0.21)

(0.21)

1.26

1.18

14

15

8

7

8

11

12

12

Consolidated income statement
For the year ended 31 December 2023 

Revenue

Operating and transportation expenses

Production taxes

Depreciation, depletion and amortisation

Gain on derivative contracts

Gross profit

Administrative expenses

Share-based payments

Foreign exchange (losses)/gains

Finance income

Finance costs

(Loss)/profit on ordinary activities before taxation

Taxation credit/(charge)

(Loss)/profit for the year attributable to owners of the parent company

(Loss)/profit per Ordinary Share

Basic, cents per share

Diluted, cents per share

The notes on pages 56 to 85 form part of the financial statements

48

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statements                     
                     
                      
                      
Consolidated statement of comprehensive income 
For the year ended 31 December 2023

(Loss)/profit for the year attributable to owners of the parent company

Other comprehensive income/(loss)

Items that may be subsequently reclassified to profit or loss

Foreign currency translation differences on foreign operations

Total comprehensive (loss)/income for the year attributable to owners of the parent company

The notes on pages 56 to 85 form part of the financial statements

2023
US$’000

2022
US$’000

(3,503)

19,271

2,772

(731)

(6,205)

13,066

49

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsConsolidated balance sheet 
As at 31 December 2023   

Company No 04573663

Non-current assets

Exploration and evaluation assets

Property and equipment

Derivative contracts

Current assets

Trade and other receivables

Cash and cash equivalents

Derivative contracts

Total assets

Current liabilities

Trade and other payables

Borrowings

Lease liabilities

Non-current liabilities

Borrowings

Lease liabilities

Deferred tax

Provisions

Total liabilities

Net assets

Equity 

Share capital

Share premium account

Shares to be issued

Warrant reserve

Share-based payment reserve

Cumulative translation reserve

Accumulated deficit

Equity attributable to owners of the parent company

Notes

2023
US$’000

2022
US$’000

13

14

15

17

18

15

19

20

20

21

22

23

25

25

24

25

25

25

49,941

50,840

-

37,986

51,805

175

100,781

89,966

7,897

3,611

278

4,637

8,996

1,133

11,786

14,766

112,567

104,732

(6,983)

(28,950)

(39)

(12,520)

(14,572)

-

(35,972)

(27,092)

(6,401)

(10,821)

(31)

(395)

(5,067)

(11,894)

(47,866)

64,701

42,568

71,735

-

1,557

3,270

(13,212)

(41,217)

64,701

-

(1,955)

(4,138)

(16,914)

(44,006)

60,726

42,412

66,847

539

1,557

3,284

(15,984)

(37,929)

60,726

The financial statements on pages 48 to 55 were approved by the Directors and authorised for issue on 26 June 2024 and are signed 
on its behalf by,

CJ Eadie  
Group Finance Director 

The notes on pages 56 to 85 form part of the financial statements

50

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statements 
 
 
 
 
 
 
Consolidated statement of changes in equity 
For the year ended 31 December 2023

Share 
capital
US$’000

Share 
premium 
account
US$’000

Shares to 
be issued
US$’000

Warrant 
reserve
US$’000

Share-
based 
payment 
reserve
US$’000

Cumulative
translation 
reserve
US$’000

Accumu-
lated 
deficit
US$’000

Total
US$’000

As at 1 January 2022

42,065

52,875

89

3,065

(9,779)

(57,721)

30,594

Transactions with owners in their 
capacity as owners:

Issue of equity shares

Exercise of warrants

Expenses of issue of equity shares

Warrant exercise extension

Grant of warrants

Share-based payments

Transfer to accumulated deficit 
in respect of lapsed options

Transfer to accumulated deficit 
in respect of expired warrants

-

-

347

17,023

-

-

-

-

-

-

-

-

-

539

(122)

(1,461)

(33)

(1,557)

-

-

-

-

-

-

-

-

-

-

33

1,557

-

-

-

-

-

408

-

-

210

(387)

(12)

Total transactions with owners in their 
capacity as owners

Profit for the year

Other comprehensive loss:

Currency translation differences

Total other comprehensive loss for the year

Total comprehensive income for the year

347

13,972

539

1,468

219

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

17,370

122

539

-

-

-

-

(1,053)

-

-

210

387

12

-

-

521

17,066

19,271

19,271

(6,205)

(6,205)

-

-

(6,205)

(6,205)

(6,205)

19,271

13,066

As at 31 December 2022

42,412

66,847

539

1,557

3,284

(15,984)

(37,929)

60,726

Transactions with owners in their 
capacity as owners:

Issue of equity shares

Exercise of warrants

Expenses of issue of equity shares

Share-based payments

Transfer to accumulated deficit 
in respect of expired options

156

5,318

-

-

-

-

-

-

(539)

(430)

-

-

-

-

-

Total transactions with owners in their 
capacity as owners

156

4,888

(539)

Loss for the year

Other comprehensive income:

Currency translation differences

Total other comprehensive income for 
the year

Total comprehensive loss for the year

-

-

-

-

-

-

-

-

As at 31 December 2023

42,568

71,735

The notes on pages 56 to 85 form part of the financial statements

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

195

6

(215)

(14)

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

215

5,474

(539)

(235)

6

-

215

4,706

(3,503)

(3,503)

2,772

2,772

2,772

-

-

2,772

2,772

(3,503)

(731)

1,557

3,270

(13,212)

(41,217)

64,701

51

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsConsolidated cash flow statement 
For the year ended 31 December 2023 

Operating activities

(Loss)/profit for the year before taxation

Adjustments for:

Finance income

Finance costs

Depreciation and depletion of property and equipment

Share-based payments

Unrealised foreign exchange losses/(gains)

Operating cash inflow before movements in working capital 

Increase in trade and other receivables

Unrealised loss/(gain) on derivative contracts

Increase in trade and other payables

Cash generated from operations

Income tax paid

Net cash generated from operating activities

Investing activities

Additions to exploration and evaluations assets

Business combination

Acquisition of oil and gas properties

Additions to oil and gas properties

(Decrease)/increase in capital expenditures related payables

Proceeds on disposal of oil and gas properties

Insurance proceeds received in respect of exploration and evaluation assets

Grant funds received in respect of exploration and evaluation assets

Interest received

Net cash used in investing activities

Financing activities

Net proceeds from issue of shares

Exercise of warrants

Proceeds from borrowings 

Repayment of borrowings

Repayment of lease liabilities

Interest and fees paid on borrowings 

Net cash generated from financing activities

Net (decrease)/increase in cash and cash equivalents

Cash and cash equivalents at beginning of year

Effect of foreign exchange rate changes

Cash and cash equivalents at end of year

The notes on pages 56 to 85 form part of the financial statements

52

2023
US$’000

2022
US$’000

(5,063)

21,226

-

3,472

9,630

6

2,772

10,817

(403)

1,029

191

(3)

2,236

12,668

210

(5,672)

30,665

(2,850)

(1,308)

723

11,634

27,230

-

-

11,634

27,230

(21,643)

-

-

(13,297)

(37,880)

(3,362)

(10,467)

(10,482)

(5,754)

9,300

2,262

7,712

302

-

-

-

-

3

(27,588)

(55,718)

3,700

16,317

-

13,260

(4,244)

(7)

(2,140)

10,569

(5,385)

8,996

-

3,611

539

30,500

(8,931)

-

(2,218)

36,207

7,719

1,811

(534)

8,996

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsCompany balance sheet 
As at 31 December 2023 

Company No 04573663

Non-current assets

Investments 

Property and equipment

Current assets

Trade and other receivables

Cash and cash equivalents

Total assets

Current liabilities

Trade and other payables

Lease liabilities

Non-current liabilities

Lease liabilities 

Total liabilities

Net assets

Equity 

Share capital

Share premium account

Shares to be issued

Warrant reserve

Share-based payment reserve

Cumulative translation reserve

Accumulated deficit

Total equity 

Notes

2023
US$’000

2022
US$’000

16

14

17

18

19

23

25

25

24

25

25

25

52,414

43,850

60

6

52,474

43,856

96

40

136

82

118

200

52,610

44,056

(450)

(39)

(489)

(31)

(520)

(459)

-

(459)

-

(459)

52,090

43,597

42,568

71,735

-

1,557

3,270

(10,968)

(56,072)

52,090

42,412

66,847

539

1,557

3,284

(13,427)

(57,615)

43,597

As permitted by section 408 of the Companies Act 2006, the Parent Company’s Income statement and Statement of comprehensive 
income have not been included in these financial statements.

The profit for the Company for the year ended 31 December 2023 is US$1.3 million (2022: loss US$0.5 million).

The financial statements on pages 48 to 55 were approved by the Directors and authorised for issue on 26 June 2024 and are signed 
on its behalf by,

CJ Eadie  
Group Finance Director

The notes on pages 56 to 85 form part of the financial statements

53

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statements 
Company statement of changes in equity 
For the year ended 31 December 2023 

Share  
capital
US$’000

Share  
premium 
account
US$’000

Shares  
to be  
issued
US$’000

Warrant 
reserve
US$’000

Share-
based 
payment
reserve
US$’000

Cumulative
translation 
reserve
US$’000

Accumu-
lated 
deficit
US$’000

Total
US$’000

As at 1 January 2022

42,065

52,875

89

3,065

(8,247)

(57,654) 32,193

Transactions with owners in their  
capacity as owners:

Issue of equity shares

Exercise of warrants

Expenses of issue of equity shares

Warrant exercise extension

Grant of warrants

Share-based payments

Transfer to accumulated deficit  
in respect of lapsed options

Transfer to accumulated deficit 
 in respect of expired warrants

347

17,023

-

-

-

-

-

-

-

-

-

539

(122)

(1,461)

(33)

(1,557)

-

-

-

-

-

-

-

-

-

-

33

1,557

-

-

-

-

-

408

-

-

210

(387)

(12)

Total transactions with owners in their 
capacity as owners

Loss for the year

Other comprehensive loss:

Currency translation differences

Total other comprehensive loss for the year

Total comprehensive loss for the year

347

13,972

539

1,468

219

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

As at 31 December 2022

42,412

66,847

539

1,557

3,284 (13,427)

(57,615) 43,597

Transactions with owners in their 
 capacity as owners:

Issue of equity shares

Exercise of warrants

Expenses of issue of equity shares

Share-based payments

Transfer to accumulated deficit  
in respect of expired options

Total transactions with owners in their 
capacity as owners

Profit for the year

Other comprehensive income:

Currency translation differences

Total other comprehensive income  
for the year

Total comprehensive income for the year

156

5,318

-

-

-

-

-

-

(539)

(430)

-

-

-

-

-

156

4,888

(539)

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

195

6

(215)

(14)

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

215

5,474

(539)

(235)

6

-

215

1,328

4,706

1,328

2,459

2,459

2,459

-

-

1,328

2,459

2,459

3,787

1,557

3,270 (10,968) (56,072) 52,090

As at 31 December 2023

42,568

71,735

The notes on pages 56 to 85 form part of the financial statements

54

-

-

-

-

-

-

-

-

-

-

-

17,370

122

539

-

-

-

-

(1,053)

-

-

210

387

12

-

-

521

17,066

(482)

(482)

(5,180)

(5,180)

(5,180)

-

-

(5,180)

(5,180)

(482)

(5,662)

-

-

-

-

-

-

-

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsCompany cash flow statement 
For the year ended 31 December 2023

Operating activities

Profit/(loss) before taxation

Adjustments for:

Finance income

Finance costs

Depreciation of property and equipment

Share-based payments

Unrealised foreign exchange gains

Operating cash outflow before movements in working capital

Increase in trade and other receivables

(Decrease)/Increase in trade and other payables

Net cash used in operating activities

Investing activities

Loans to subsidiary undertakings

Net cash used in investing activities

Financing activities

Net proceeds from the issue of shares

Proceeds from exercise of warrant

Repayment of lease liabilities

Repayment of borrowings

Interest paid on borrowings

Net cash generated from financing activities

Net decrease in cash and cash equivalents

Cash and cash equivalents at beginning of year

Effect of foreign exchange rate changes

Cash and cash equivalents at end of year

The notes on pages 56 to 85 form part of the financial statements

2023
US$’000

2022
US$’000

1,328

(482)

(2,595)

(1,215)

-

23

6

(18)

(1,256)

(14)

(9)

272

2

210

(1,407)

(2,620)

(17)

16

(1,279)

(2,621)

(2,493)

(2,493)

(11,330)

(11,330)

3,700

16,317

-

(7)

-

-

3,693

(79)

118

1

40

539

-

(4,060)

(287)

12,509

(1,442)

1,574

(14)

118

55

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements 
For the year ended 31 December 2023 

1. Corporate information

Zephyr Energy plc (the “Company” and, together with its 
subsidiaries, the “Group”) is a public company limited by shares, 
domiciled and incorporated in England and Wales under the 
Companies Act 2006. The address of the registered office is 
20-22 Wenlock Road, London, N1 7GU.

The Company’s Ordinary Shares are approved to trade on the 
OTCQB Venture Market (“OTCQB”) in the U.S. under the ticker 
ZPHRF. The ability to trade in the Company’s Ordinary Shares 
on AIM is not affected by the OTCQB facility.

Zephyr Energy plc is a technology-led Exploration & Production 
(“E&P”) company focused on the delivery of superior economic 
returns through responsible resource development from its 
portfolio of operated and non-operated assets in the Rocky 
Mountain region of the U.S.

2. Adoption of new and revised standards

Standards adopted during the year
The Group has adopted all of the new or amended Accounting 
Standards and interpretations issued by the International 
Accounting Standards Board (“IASB”) that are mandatory and 
relevant to the Group’s activities for the current reporting period. 

The following new and revised Standards have been adopted but 
have not had any material impact on the amounts reported in 
these financial statements:

••   Amendments to IFRS 17 - Insurance contracts

••   Amendments to IFRS 17 - Initial application of IFRS 17 and 

IFRS 9 - comparative information

••   Amendments to IAS 1 and IFRS practice statement 2 - 

Disclosure of accounting policies

••   Amendments to IAS 8 - Definition of accounting estimates

••   Amendments to IAS 12 - Deferred tax related assets and 

liabilities arising from a single transaction

••   Amendments to IAS 12 - International tax reform - pillar two 

model rules

Standards issued but not yet effective
Any new or amended Accounting Standards or interpretations 
that are not yet mandatory (and in some cases, had not yet been 
endorsed by the UK Endorsement Board) have not been early 
adopted by the Group for the year ended 31 December 2023. 
They are as follows:

••   Amendments to IAS 1 - Classification of liabilities as current 

or non-current

••   Amendments to IFRS 16 - Lease liability in a sale and 

leaseback

••   Amendments to IAS 1 - Non-current liabilities with covenants

••   Amendments to IAS 7 and IFRS 7 - Supplier finance 

arrangements

••   Amendments to IAS 21 - Lack of exchangeability

••   Amendments to IFRS 10 and IAS 28 - Sale or contribution of 
assets between an investor and its associate or joint venture

••   IFRS S1 - General requirements for disclosure of sustainability 

- related financial information

••   IFRS S2 - Climate-related disclosures

The Directors do not expect that the adoption of these Standards 
or Interpretations in future periods will have a material impact on 
the financial statements of the Company or the Group.

3. Material accounting policies

Basis of preparation
The financial statements have been prepared in accordance with 
UK-adopted International Accounting Standards and with the 
requirements of the Companies Act 2006 as applicable to 
companies reporting under those standards.

The financial statements have been prepared on the historical 
cost basis, other than certain financial assets and liabilities, which 
are stated at fair value. Historical cost is generally based on the 
fair value of the consideration given in exchange for assets. 

The consolidated and the Company financial statements are 
presented in United States dollars (“US$”). All amounts have 
been rounded to the nearest thousand unless otherwise indicated.

The functional currency of the Company is pounds sterling (“£”) 
and that of the U.S. subsidiaries is US$.

As described below, the Directors continue to adopt the going 
concern basis in preparing the consolidated and the Company 
financial statements. 

The accounting policies set out below have, unless otherwise 
stated, been applied consistently to all periods presented in 
these financial statements. 

The preparation of the financial statements in compliance with 
UK-adopted international accounting standards requires 
management to make estimates and the Directors to exercise 
judgement in applying the Group’s accounting policies. The 
significant judgments made by the Directors in the application 
of these accounting policies that have significant impact on the 
financial statements and the key sources of estimation 
uncertainty are disclosed in note 4.

Going concern
The Directors have prepared cashflow forecasts for the Group 
and Parent Company for the period to 31 December 2025 based 
on their assessment of both the discretionary and the non-
discretionary cash requirements of the Group during this period 
and based on a range of sensitivities and scenarios. 

56

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

3. Material accounting policies continued

These cashflow forecasts include the forecast revenues from, and 
the operating costs of, the Group’s operations, together with all 
committed development expenditure and cashflows related to 
the drilling of the State 36-2R well and the expected insurance 
recoveries from the drilling operations.  As disclosed in note 13, a 
well incident happened during the year which led to the drilling of 
the new State 36-2R well. The Group has comprehensive well 
control insurance coverage and the Board expects to recover 
insurance proceeds from the well incident for the cost of drilling 
the new State 36-2R well. Should the insurance proceeds be 
delayed or lower than expected, the Group could require further 
funding to meet its commitments within the going concern 
assessment period.

In addition, as at 31 December 2023, the Group and the Parent 
Company had existing borrowings that are payable within 12 months 
(current) from the end of the reporting period. To meet this 
obligation, the Group and the Parent Company will require debt 
refinancing of existing borrowings or raising of additional funding. 

As such, the Group and the Parent Company’s ability to continue 
as going concerns is dependent on securing  insurance proceeds 
and debt refinancing of existing borrowings or raising additional 
funding which are not guaranteed. This indicates the existence of 
a material uncertainty which may cast significant doubt over the 
Group and the Parent Company’s ability to continue as going 
concerns, and therefore, the Group and the Parent Company may 
be unable to realise their assets and discharge their liabilities in the 
normal course of business.

Following detailed discussions, the Directors are confident that 
the Group and the Parent Company will be able to secure 
insurance recoveries as per above, refinance their existing 
borrowings and raise additional funding to enable the Group and 
the Parent Company to continue in operation for at least the next 
twelve months from the date of approval of the financial 
statements. The Directors have extensive experience in raising 
capital for projects and ventures and remain confident in the 
Group and the Parent Company’s ability to raise the capital 
needed to maintain and deliver on its commitments and continue 
as a going concern.

The Directors continue to adopt the going concern basis in preparing 
the consolidated financial statements. The financial statements do 
not include any adjustments that would be required should the 
going concern basis of preparation no longer be appropriate.

Basis of consolidation
The consolidated financial statements incorporate the financial 
statements of the Company and its subsidiary undertakings 
(together, “the Group”) made up to 31 December each year.

Subsidiary undertakings are those entities controlled directly or 
indirectly by the Company. Control is achieved when the 
Company is exposed to, or has rights to, variable returns from its 
involvement with the entity and has the ability to affect those 
returns through its power over the entity.

The results of subsidiaries acquired or disposed of during the 
year are included in the income statement from the date on 
which control is transferred to the Group or, up to the date that 
control ceases, as appropriate. Where necessary, adjustments 
are made to the financial statements of subsidiaries to bring 
accounting policies used into line with those used by the Group.

The Group applies the acquisition method to account for business 
combinations. The consideration for each acquisition is measured 
at the aggregate of the fair values (at the date of exchange) of 
assets given, liabilities incurred or assumed, and equity instruments 
issued by the Group in exchange for control of the acquire. 

All intra-group transactions, balances, income and expenses are 
eliminated on consolidation.

Business combinations and asset acquisitions
In accordance with the requirements of IFRS 3 Business 
combinations, the Group performs an assessment of each 
acquisition to determine whether the acquisition should be 
accounted for as an asset acquisition or a business combination. 
For each transaction, the Group may elect to apply the concentration 
test as permitted by the amendment to IFRS 3 to determine if 
the fair value of assets acquired is substantially concentrated in 
a single asset (or a group of similar assets). If this concentration 
test is met, the acquisition qualifies as an acquisition of a group 
of assets and liabilities, and not of a business.

The requirements of IFRS 3 are applied once it is determined 
that a business has been acquired. Under IFRS 3, a business is 
defined as an integrated set of activities and assets conducted 
and managed for the purpose of providing a return to investors. 
A business generally consists of inputs, processes applied to 
those inputs, and resulting outputs that are, or will be, used to 
generate revenues.

When less than the entire interest of an entity is acquired, the 
choice of measurement of the non-controlling interest, either at 
fair value or at the proportionate share of the acquiree’s identifiable 
net assets, is determined on a transaction by transaction basis.

The Group does not recognise a liability for contingent 
consideration in respect of asset acquisitions until the related 
activity occurs.

Investments in subsidiary undertakings
Long-term investments representing interests in subsidiary 
undertakings are stated at cost less any provision for impairment 
in the value of the non-current investment.  

Exploration and evaluation assets
The Group applies the full cost method of accounting for Exploration 
and Evaluation (“E&E”) costs, having regard to the requirements 
of IFRS 6 Exploration for and Evaluation of Mineral Resources. 
Under the full cost method of accounting, costs of exploring for 
and evaluating mineral resources are accumulated by reference 
to appropriate cost centres being the appropriate licence area but 
are tested for impairment on a cost pool basis as described below.

57

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

3. Material accounting policies continued

E&E assets comprise costs of (i) E&E activities that are on-going 
at the balance sheet date, pending determination of whether or 
not commercial reserves exist and (ii) costs of E&E that, whilst 
representing part of the E&E activities associated with adding to 
the commercial reserves of an established cost pool, did not 
result in the discovery of commercial reserves.

Costs incurred prior to having obtained the legal rights to 
explore an area are expensed directly to the income statement 
as they are incurred. 

All costs of E&E are initially capitalised as E&E assets. Payments 
to acquire the legal right to explore, costs of technical services 
and studies, seismic acquisition, exploratory drilling and testing 
are capitalised as E&E assets.

Costs include directly attributable overheads together with the 
cost of other materials consumed during the exploration and 
evaluation phases.

Treatment of E&E assets at conclusion of 
appraisal activities
E&E assets related to each exploration licence/project are carried 
forward until the existence (or otherwise) of commercial reserves 
has been determined. If commercial reserves have been discovered, 
the related E&E asset are assessed for impairment on a cost pool 
basis as set out below and any impairment is recognised in the 
income statement. The carrying value, after any impairment loss, 
of the relevant E&E assets is then reclassified as development 
and production assets.

E&E assets that related to E&E activities that are determined not 
to have resulted in the discovery of commercial reserves remain 
capitalised as E&E assets at cost, subject to meeting a pool-wide 
impairment test in accordance with the accounting policy for 
impairment of E&E assets set out below. 

Impairment of exploration and evaluation 
assets
E&E assets are assessed for impairment when facts and 
circumstances suggest that the carrying amount may exceed its 
recoverable amount. Such indicators include, but are not limited to, 
those situations outlined in paragraph 20 of IFRS 6 Exploration 
for and Evaluation of Mineral Resources and include the point at 
which a determination is made as to whether or not commercial 
reserves exist.

Where there are indications of impairment, the E&E assets 
concerned are tested for impairment. Where the E&E assets 
concerned fall within the scope of an established full cost pool, 
the E&E assets are tested for impairment together with all 
development and production assets associated with that cost 
pool, as a single cash-generating unit.

The aggregate carrying value is compared against the expected 
recoverable amount of the pool, generally by reference to the 
present value of the future net cashflow expected to be derived 

58

from production of commercial reserves. Where the E&E assets 
to be tested fall outside the scope of any established cost pool, 
there will generally be no commercial reserves and the E&E 
assets concerned will generally be written off in full.

If the recoverable amount of a cash-generating unit is estimated 
to be less than its carrying amount, the carrying amount of the 
cash-generating unit is reduced to its recoverable amount. An 
impairment loss is recognised immediately in profit or loss.

When an impairment loss subsequently reverses, the carrying 
amount of the cash-generating unit is increased to the revised 
estimate of its recoverable amount, but so that the increased 
carrying amount does not exceed the carrying amount that 
would have been determined had no impairment loss been 
recognised for the cash-generating unit in prior years. A reversal 
of an impairment loss is recognised immediately in profit or loss.

The Group considers each area of oil and gas exploration, on a 
geographical basis to be a separate cost pool and therefore 
aggregates all specific assets for the purposes of determining 
whether impairment of E&E assets has occurred.

Property and equipment
Oil and gas properties
Oil and gas properties are stated at cost, less accumulated 
depreciation and any accumulated impairment losses. The initial 
cost of an asset comprises its purchase price or construction cost, 
any costs directly attributable to bringing the asset into operation, 
and the initial estimate of the asset retirement obligation. The 
purchase price or construction cost is the aggregate amount paid 
and the fair value of any consideration given to acquire the asset.

Oil and gas properties are depleted using the unit-of-production 
method based on production for the period divided by the Group’s 
estimated total proved and probable reserve volumes (before 
royalties) of the geographic region concerned. Production and 
reserves volumes for natural gas are converted at the energy 
equivalent of six thousand cubic feet of natural gas to one barrel 
of oil. Estimates of future development costs for developing the 
proved and probable reserves are included in the depletion base.

Office equipment and right-of-use assets
Office equipment and right-of-use assets are stated at cost less 
accumulated depreciation and any accumulated impairment 
losses. The cost of an item of office equipment and right-of-use 
assets comprises its purchase price and any costs directly 
attributable to bringing the asset into use.

Depreciation is recognised so as to write off the cost of assets 
less their residual values over their useful lives at the following rates: 

Office equipment  

straight-line over 5 years

Right-of-use assets  

 straight-line over the shorter of the 
lease term and the useful life of 
the underlying asset

The estimated useful lives, residual value and depreciation method 
are reviewed at the end of each reporting period, with the effect 
of any changes in estimate accounted for on a prospective basis.

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

3. Material accounting policies continued

An item of office equipment and right-of-use asset is derecognised 
upon disposal or when no future economic benefits are expected 
to arise from the continued use of the asset. Any gain or loss 
arising on the disposal or retirement is determined as the difference 
between the sales proceeds and the carrying amount of the 
asset and is recognised in profit or loss. 

Impairment of property and equipment
In accordance with the requirements of IAS 36 Impairment of 
assets, at each reporting date, the Directors assess whether 
indications exist that the carrying value of an asset may be 
impaired. If there are indicators of impairment the Directors 
estimate the asset’s recoverable amount. An assets recoverable 
amount is the higher of an asset’s, or cash-generating unit’s, fair 
value less costs to sell and its value-in-use, and is determined on 
a portfolio basis, based on geographical location.

Where the carrying amount of an asset or cash-generating unit 
exceeds its recoverable amount, the Directors consider the asset 
impaired and writes it down to its recoverable amount. In assessing 
value-in-use, the Directors discount the estimated future 
cashflows to their present value using a pre-tax discount rate 
that reflects current market assessments of the time value of 
money and the risks specific to the asset. In determining fair 
value less costs to sell, the Directors consider recent market 
transactions, if available. If no such transactions can be identified, 
the Directors will utilise an appropriate valuation model.

Joint arrangements
The Company is party to a joint arrangement when there is a 
contractual agreement that sets out the terms of the relationship 
over the relevant activities of the Company and at least one 
other party.

Management has a legal degree of control over these joint 
operating arrangements through Joint Operating Agreements.

The Company classifies its interests in joint arrangements as joint 
operations where the Company has both the right to assets and 
obligations for the liabilities of the joint arrangement. It accounts 
for its interests in joint operations by recognising its share of 
assets and liabilities, revenues and expenses in accordance with 
its contractually conferred rights and obligations.

The Company accounts for its own assets, liabilities and cashflows 
measured in accordance with the terms of the Joint Operating 
agreement and the accounting treatment reflects the 
agreement’s commercial effect. 

Where the percentage ownership in joint arrangements changes 
during a reporting period, the arrangement is reassessed to ensure 
it is still appropriately classified, and the Company’s share of income 
and expenses is adjusted prospectively from the date of change.

Foreign currencies 
For the purpose of the consolidated financial statements, the 
results and financial position are expressed in United States dollar, 
which is the presentation currency for both company and 
consolidated financial statements.

In preparing the financial statements of the individual companies, 
transactions in currencies other than the functional currency of 
each group company (“foreign currencies”) are translated into 
the functional currency at the rates of exchange prevailing on 
the dates of the transactions. At each reporting date, monetary 
assets and liabilities that are denominated in foreign currencies 
are retranslated into the functional currency at the rates prevailing 
on the reporting date. Non-monetary assets and liabilities carried 
at fair value that are denominated in foreign currencies are 
translated at the rates prevailing at the date when the fair value 
was determined. Non-monetary items that are measured in 
terms of historical cost in a foreign currency are not retranslated.

Foreign exchange differences are recognised in the profit or loss 
in the period in which they arise, except for foreign exchange 
differences on monetary items receivable from or payable to a 
foreign operation for which settlement is neither planned nor 
likely to occur and which, therefore, form part of the net 
investment in the foreign operation. Foreign exchange differences 
arising on the translation of the Group’s net investment in foreign 
operations are recognised as a separate component of Shareholders’ 
equity via the statement of other comprehensive income. On 
disposal of foreign operations and foreign entities, the cumulative 
translation differences are recognised in the income statement 
as part of the gain or loss on disposal. 

For the purpose of presenting company and consolidated 
financial statements, the assets and liabilities of the Company, 
and the Group’s subsidiaries, which have a functional currency 
other than United States dollar, are translated using exchange 
rates prevailing at the end of each reporting period. Income and 
expense items are translated at the average exchange rates for 
the period, unless exchange rates fluctuate significantly during 
that period, in which case the exchange rates at the date of 
transactions are used. Foreign exchange differences arising are 
recognised in other comprehensive income and accumulated in 
equity. Equity items are translated at the exchange rates at the 
date of transactions and foreign exchange differences arising 
are accumulated directly in equity.

On the disposal of a foreign operation (i.e. a disposal of the 
Group’s entire interest in a foreign operation, a disposal involving 
loss of control over a subsidiary that includes a foreign operation or 
loss of joint control over a jointly controlled entity that includes 
a foreign operation), all of the accumulated exchange differences 
in respect of that operation attributable to the Group are reclassified 
to profit or loss. Where there is no change in the proportionate 
percentage interest in an entity then there has been no disposal 
or partial disposal and accumulated exchange differences 
attributable to the Group are not reclassified to profit or loss.

59

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

3. Material accounting policies continued

Fair value adjustments arising on the acquisition of a foreign 
operation are treated as assets and liabilities of the foreign operation 
and translated at the rate of exchange prevailing at the end of 
each reporting period. Exchange differences arising are 
recognised in equity. 
Taxation
The tax expense represents the sum of the tax currently payable 
for the year and deferred tax.

The tax currently payable is based on taxable profit for the year. 
Taxable profit differs from profit as reported in the income 
statement because it excludes items of income or expense that 
are taxable or deductible in other years and items that are never 
taxable or deductible. The Group’s liability for current tax is calculated 
using tax rates that have been enacted or substantively enacted 
by the reporting date.

Deferred tax is recognised on temporary differences between 
the carrying amounts of assets and liabilities in the consolidated 
financial statements and the corresponding tax bases used in the 
computation of taxable profit. Deferred tax liabilities are generally 
recognised for all taxable temporary differences and deferred 
tax assets are generally recognised for all deductible temporary 
differences to the extent that it is probable that taxable profits 
will be available against which those deductible temporary 
differences can be utilised. Such deferred tax assets and liabilities 
are not recognised if the temporary difference arises from 
goodwill or from the initial recognition (other than in a business 
combination) of other assets and liabilities in a transaction which 
affects neither the taxable profit nor the accounting profit.

Deferred tax liabilities are recognised for taxable temporary 
differences associated with investments in subsidiaries and 
interests in joint ventures, except where the Group 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. Deferred tax assets arising from deductible temporary 
differences associated with such investments and interest are 
only recognised to the extent that it is probable that there will be 
sufficient taxable profits against which to utilise the benefits of 
the temporary differences and they are expected to reverse in 
the foreseeable future.

The carrying amount of deferred tax assets is reviewed at each 
reporting date and reduced to the extent that it is no longer 
probable that sufficient taxable profits will be available to allow 
all or part of the assets to be recovered.

Deferred tax liabilities and assets are measured at the tax rates 
that are expected to apply in the period in which the liability is 
settled or the asset realised, based on tax rates that have been 
enacted or substantively enacted at the reporting date. 

Current and deferred tax are recognised in profit or loss, 
except when they relate to items that are recognised in other 
comprehensive income or directly in equity, in which case, the 

60

current and deferred tax are also recognised in other comprehensive 
income or directly in equity respectively. Where current tax or 
deferred tax arises from the initial accounting for a business 
combination, the tax effect is included in the accounting for  
the business combination.

Deferred tax assets and liabilities are offset when there is a 
legally enforceable right to set off current tax assets against 
current tax liabilities and when they relate to income taxes levied 
by the same taxation authority and the Group intends to settle 
its current tax assets and liabilities on a net basis.

Investments and other financial instruments
Recognition of financial assets and financial liabilities
Financial assets and financial liabilities are recognised on the 
Group’s balance sheet when the Group becomes a party to the 
contractual provisions of the instrument, and are initially 
measured at fair value. Transaction costs are included as part of 
the initial measurement, except for financial assets at fair value 
through profit or loss.

Investments and other financial assets are subsequently 
measured at either amortised cost or fair value depending on 
their classification. Classification is determined based on both 
the business model within which such assets are held and the 
contractual cashflow characteristics of the financial asset unless 
an accounting mismatch is being avoided.

Financial liabilities are subsequently measured at either amortised 
cost or fair value.

Fair value measurement
Assets and liabilities recognised at fair value through the income 
statement are measured at the price that would be received to 
sell an asset or paid to transfer a liability in an orderly transaction 
between market participants at the measurement date. The fair 
value is based on assumptions that market participants would 
use when pricing an asset or liability, including assumptions 
about risk and risk inherent in valuation techniques and the 
inputs to valuations. Fair value measurements are classified and 
disclosed in one of the following categories:

Level 1: Fair value is based on actively quoted market prices, 
if available.

Level 2: In the absence of actively quoted market prices, the 
Group seeks price information from external sources including 
broker quotes and industry publications. Substantially all of these 
inputs are observable in the market place during the entire term 
of the instrument, can be derived from observable data, or 
supported by observable levels at which transactions are 
executed in the market place.

Level 3: If valuations require inputs that are both significant to 
the fair value measurement and less observable from objective 
sources, we must estimate prices based on available historical 
and near-term future price information and certain statistical 
methods that reflect the Group’s market assumptions.

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

3. Material accounting policies continued

Derecognition of financial assets and financial liabilities
The Group derecognises a financial asset only when the contractual 
rights to cashflows from the asset expire, or it transfers the financial 
asset and substantially all the risks and rewards of ownership of 
the asset to another entity. If the Group neither transfers nor retains 
substantially all the risks and rewards of ownership and continues 
to control the transferred asset, the Group recognises its retained 
interest in the asset and an associated liability for the amount it 
may have to pay. If the Group retains substantially all the risks 
and rewards of ownership of a transferred financial asset, the 
Group continues to recognise the financial asset and also 
recognises a collateralised borrowing for the proceeds received. 

On derecognition of a financial asset and financial liability a gain 
or loss is recognised in profit or loss.

Impairment of financial assets
The Group recognises a loss allowance for expected credit losses 
on financial assets which are measured at amortised cost. The 
measurement of the loss allowance depends upon the Group’s 
assessment at the end of each reporting period as to whether 
the financial instrument’s credit risk has increased significantly 
since initial recognition, based on reasonable and supportable 
information that is available without undue cost or effort to obtain. 

Where there has not been a significant increase in exposure to 
credit risk since initial recognition, a 12-month expected credit 
loss allowance is estimated. This represents a portion of the asset’s 
lifetime expected credit losses that is attributable to a default 
event that is possible within the next 12 months. Where a financial 
asset has become credit impaired or where it is determined that 
credit risk has increased significantly, the loss allowance is based 
on the asset’s lifetime expected credit losses. The amount of 
expected credit loss recognised is measured on the basis of the 
probability weighted present value of anticipated cash shortfalls 
over the life of the instrument discounted at the original 
effective interest rate. 

Trade and other receivables 
Trade and other receivables are measured at initial recognition at 
fair value, and are subsequently measured at amortised cost using 
the effective interest method, less any allowance for expected 
credit losses.

The Group has applied the simplified approach to measuring 
expected credit losses which uses a lifetime expected loss 
allowance. To measure the expected credit losses, trade 
receivables are grouped on the basis of days overdue.

Trade and other receivables include prepayments which were 
previously presented as a separate line on the Balance Sheet. 
The comparative for the year ended 31 December 2022 has 
been adjusted accordingly for consistency.

Cash and cash equivalents
Cash and cash equivalents comprise cash-in-hand and on-
demand deposits. 

Derivative contracts
The Group uses forward commodity contracts to hedge its 
commodity price risks. The Group has not applied hedge accounting 
and as a result, such derivative contracts are initially recognised 
at fair value on the date on which a derivative contract is entered 
into and are subsequently remeasured at fair value.

Derivative contracts are presented as financial assets when the 
fair value is positive and as financial liability when the fair value is 
negative. Net changes in fair value are recognised in profit or loss. 

Trade and other payables
Trade and other payables are initially measured at their fair value, 
and are subsequently measured at amortised cost using the 
effective interest rate method. 

Borrowings
Borrowings are recognised initially at fair value, net of any transaction 
costs incurred. Borrowings are subsequently measured at amortised 
cost. Any difference between the proceeds (net of transaction 
costs) and the redemption value is recognised in the income 
statement over the period of the borrowings using the effective 
interest method, if applicable.

Amortised cost is calculated by taking into account any fees or 
costs that are an integral part of the effective interest rate. The 
effective interest rate amortisation is included as finance costs 
in the income statement.

Interest on borrowing is accrued as applicable to each class of 
borrowing.

Warrants
Warrants issued are classified within Shareholders’ equity and are 
valued at fair value on issuance. The Group uses the Black-Scholes 
model to estimate fair value. Upon exercise, the consideration 
received is recorded as an increase in share capital.

Provisions
Provisions are recognised when the Group has a legal or constructive 
obligation, as a result of past events, for which it is probable that 
an outflow of economic resources will result and that outflow 
can be reliably measured.

The amount recognised as a provision is the best estimate of the 
consideration required to settle the present obligation at the end 
of the reporting period, considering the risks and uncertainties 
surrounding the obligation. When a provision is measured using 
the cashflow estimated to settle the present obligation, its 
carrying amount is the present value of those cashflows.

61

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

3. Material accounting policies continued

Decommissioning
Where a liability for the retirement of a well, removal of production 
equipment and site restoration at the end of the production life of 
a well exists, the Group recognises a liability for asset retirement. 
Provision for asset retirement is recognised in full when the related 
assets are installed or acquired, and are then reassessed at the 
end of each reporting period. 

Revenue recognition
Natural Gas, NGLs and Oil
Revenue is comprised of the fair value of the consideration received 
or receivable from the sale of natural gas and crude oil products 
in the ordinary course of the Group’s activities and is recognized 
when control is transferred to the purchaser. This is generally 
met when title passes from the Group to its customer. Revenue 
from oil and gas production represents the Group’s share. 

The provision recognised is calculated as the net present value 
of the Group’s share of the expenditure expected to be incurred 
at the end of the life of the asset. The cost of recognising the 
decommissioning provision is included as part of the cost of the 
relevant asset and is, therefore, charged to the income statement 
in accordance with the Group’s policy for depreciation of property 
and equipment or for impairment of exploration and evaluation 
assets, depending upon the stage of the assets at the time 
of retirement.

The unwinding of the discount on the decommissioning liability 
is included as accretion of the provision and is presented in finance 
costs in the income statement.

The Group recognises changes in estimates prospectively, with 
corresponding adjustments to the liability and the associated 
non-current asset.

Share-based payments
The Group has applied the requirements of IFRS 2 Share-based 
Payment for all grants of equity instruments.

The Group operates an equity-settled share option plan and a 
share-based compensation plan in respect of certain Directors, 
employees and consultants. The Group also issues warrants to 
certain advisors which are classed as share-based payments. 
Equity-settled share-based payments are measured at fair value 
(excluding the effect of non-market based vesting conditions) at 
the date of grant. The fair value of the service received in exchange 
for the grant of options/warrants and equity is recognised as an 
expense. The fair value determined at the grant date of equity-
settled share-based payment is expensed on a straight-line basis 
over the vesting period, based on the Group’s estimate of shares 
that will eventually vest and adjusted for the effect of non-
market based vesting conditions. 

The fair value of option and warrant grants are measured using 
the Black Scholes model for non-performance-based options. 
The expected life used in the model has been adjusted, based on 
management’s best estimate, for the effect of non-transferability, 
exercise restrictions and behavioural considerations.

The grant by the Company of options and share-based compensation 
plans over its equity instruments to the employees of subsidiary 
undertakings in the Group is treated as a capital contribution. 
The fair value of employee services received, measured by reference 
to the grant date fair value, is recognised over the vesting period 
as an increase to investment in subsidiary undertakings, with a 
corresponding credit to equity in the parent entity accounts. 

62

The Group sells its petroleum and natural gas revenue pursuant 
to variable-price contracts with terms of generally one year or 
less. The transaction price is based on the commodity index price 
at the point of title transfer and may include adjustments for quality, 
location or other factors depending on the contract terms. The 
Group delivers volumes of petroleum and natural gas product to 
the respective counterparty throughout the contract period. The 
Group evaluates its arrangements with third parties and partners 
to determine if the Group acts as the principal or as an agent. In 
making this evaluation and concluding that it acts as a principal, 
management considers if the Group obtains control of the 
product delivered, which is indicated by the Group having the 
primary responsibility for the delivery of the product, having the 
ability to establish prices or having inventory risk. 

Revenue is recognized when a customer obtains legal title to the 
product, which is when volumes are physically transferred to the 
contract counterparty at a point of sale. 

Verified emission reductions (“VERs”)
VERs are purchased in increments corresponding to the Groups 
estimated production forecasts and are subsequently retired in 
accordance with actual monthly production levels. Once retired 
the VERs are recognised in the Group’s income statement and 
presented within operating and transportation expenses.

Segmental reporting
Operating segments are reported in a manner consistent with 
the internal reporting provided to the chief operating decision 
maker. The chief operating decision maker, who is responsible 
for allocating resources and assessing performance of the 
operating segments and making strategic decisions, has been 
identified as the Board of Directors.

4. Critical accounting judgements and key 
sources of estimation uncertainty

In the application of the Group’s accounting policies, which are 
described in note 3, the Directors are required to make judgements, 
estimates and assumptions about the carrying amounts of the 
assets and liabilities that are not readily apparent from other 
sources. The estimates and associated assumptions are based 
on historical experience and other factors that are considered to 
be relevant. Actual results may differ from these estimates. 

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

4. Critical accounting judgements and key 
sources of estimation uncertainty continued

The estimates and underlying assumptions are reviewed on an 
ongoing basis. Revisions to accounting estimates are recognised 
in the period in which the estimate is revised if the revision affects 
only that period or in the period of the revision and future periods 
if the revision affects both the current and future periods.

The following are the critical judgements and estimations that the 
Directors have made in the process of applying the Group’s and 
Company’s accounting policies and that have the most significant 
effect on the amounts recognised in the financial statements:

Critical judgements
Exploration and evaluation assets - Group
The decision to transfer assets from exploration and evaluation 
assets to property and equipment is based on the estimated 
proved and probable reserves which are in part, used to determine 
a project’s technical feasibility and commercial viability.

There has been no transfer of exploration and evaluation assets 
during the year ended 31 December 2023.

Business combination and asset acquisitions - Group
During the year ended 31 December 2023, the Group acquired 
the remaining 25% working interest in the WSU in the Paradox 
Basin, Utah from RSOC. 

The determination of whether a transaction is a business 
combination or an asset acquisition is based on management’s 
assessment of each individual transaction based on the criteria 
of IFRS 3 Business combinations.

If the initial concentration test is met, then the acquisition is 
accounted for as an asset acquisition and no further analysis is 
required. If the initial test is not met, the acquisition is further 
analysed to determine whether the acquisition meets the 
definition of a business under IFRS 3. If the acquisition meets 
the criteria and is, therefore, considered to be a business 
combination, the Group applies the acquisition method to 
account for the recognition and measurement of identifiable 
assets acquired, the liabilities assumed, any non-controlling 
interest and, if applicable, goodwill or a gain on the transaction.

The Directors consider that the acquisition meets the requirements 
of the concentration test under IFRS 3 based on the fact that 
the fair value of the assets acquired is concentrated in a single 
identifiable asset or group of similar identifiable assets. The 
acquisition has, therefore been accounted for as an acquisition 
of assets and is presented within exploration and evaluation 
assets. See note 13.

Estimations
Impairment and impairment reversals - Group
The recoverable amounts of CGUs and individual assets have 
been determined based on the higher of value-in-use calculations 
and fair values less costs to dispose. These calculations require 
the use of estimates and assumptions including information on 

forecasted oil and gas commodity prices, expected production 
volumes, quantity of reserves, discount rates, as well as future 
development costs, operating costs and royalty costs. Key 
assumptions in the determination of cashflows from reserves 
include reserves estimated by the Group’s independent third 
party reserve evaluators. It is possible that any or all of these key 
assumptions may change, which may then impact the estimated 
values of the oil and gas properties and then require a material 
adjustment to the carrying value of E&E assets and property and 
equipment. Significant management judgement is required to 
analyse internal and external indicators of impairment or historical 
impairment reversals. The Group monitors internal and external 
indicators of impairment relating to its non-current assets. 

Recoverability of loans to subsidiary undertakings - 
Company only
The Company has outstanding loans from its directly held subsidiary 
which has then made a number of loans to indirectly held 
subsidiaries as the primary method of financing the activity of 
those subsidiaries. The principal loans are shown in the Company 
balance sheet on the basis that the loans incur interest at a 
commercial rate according to the Group’s inter-company loan 
policy, which is being rolled up until such time as the subsidiaries 
are in a position to settle. 

In accordance with IFRS 9 Financial instruments, as the subsidiary 
undertakings cannot repay the loans at the reporting date, the 
Board has made an assessment of expected credit losses (“ECL”). 
The Group has not made any provision for impairment of its U.S. 
non-current assets and is expecting to generate profits in the 
future. As a result, the Board do not consider that any further 
provision for ECL is required and, therefore, subject to the 
recognition of exchange differences, a cumulative lifetime ECL 
of US$29.9 million has been recognised at 31 December 2023 
(2022: US$28.4 million). 

At 31 December 2023, the Company has total loans in its directly 
held subsidiaries of US$82.8 million (2022: US$72.3 million). See 
note 16.

Reserve estimates
Reserves are estimates of the amount of natural gas, NGLs and 
oil product that can be economically and legally extracted from the 
Group’s properties. To calculate the reserves, significant estimates 
and assumptions are required about a range of geological, technical 
and economic factors, including quantities, production techniques, 
recovery rates, production costs, transport costs, commodity 
demand, commodity prices and exchange rates.

Estimating the quantity and/or grade of reserves requires the 
size, shape and depth of fields to be determined by analysing 
geological data, such as drilling samples. This process may 
require complex and difficult geological judgments and 
calculations to interpret the data.

Given the economics used to estimate reserve changes from 
year to year and, because additional geological data is generated 
during the course of operations, estimates of reserves may 
change from time to time.

63

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

4. Critical accounting judgements and key sources of estimation uncertainty continued

Decommissioning
Decommissioning costs will be incurred by the Group at the end of the operating life of certain facilities and properties. The ultimate 
decommissioning costs are uncertain and cost estimates can vary in response to many factors including changes to relevant 
regulatory requirements, the emergence of new restoration techniques or experience at other production sites. The expected timing 
and amount of expenditures can also change, for example in response to changes in reserves or changes in laws and regulations or 
their interpretation. In addition, the Group determines the appropriate discount rate at the end of each reporting period. The Group 
uses a risk-free discount rate to determine the present value of the estimated future cash outflows to settle the obligation and this 
may change in response to numerous market factors. As a result, there could be significant adjustments to the provisions 
established which would affect future financial results. See note 22.

Derivative contracts
Derivative contracts are presented as financial assets when the fair value is positive and as financial liabilities when the fair value is 
negative. Net changes in fair value are recognised in profit or loss. 

The fair value of derivative contracts is based on published market prices as at 31 December and the actual gains and losses realised 
on eventual cash settlement can vary due to subsequent fluctuations in commodity prices.

5. Segmental information

When considering the requirements of IFRS 8 Operating segments, the Board of Directors have determined that the Group has one 
main operating segment, the exploration, development and production of oil and gas resources based in the U.S. As a result, no 
segmental information is presented.

6. Revenue

Petroleum and natural gas revenue earned by the Group in the U.S. is disaggregated by commodity, as follows:

2023
US$’000

2022
US$’000

22,609

35,257

1,657

959

3,040

2,765

25,225

41,062

2023
US$’000

2022
US$’000

2,888

215

369

3,472

1,880

236

120

2,236

Crude oil

Natural gas liquids

Natural gas

7. Finance costs

Loan interest and fees

Amortisation of debt costs

Unwinding of discount on decommissioning

64

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

8. (Loss)/profit on ordinary activities before taxation

The (loss)/profit before taxation for the year has been arrived at after charging/(crediting):

Gains on derivative contracts

Depreciation and depletion of property and equipment

Staff costs excluding share-based payments

Share-based payments

Expense relating to short-term leases

Foreign exchange losses/(gains)1

2023
US$’000

2022
US$’000

(412)

(1,781)

9,630

2,664

6

30

12,668

1,830

210

31

2,776

(6,102)

1    Foreign exchange losses/(gains )include a loss of US$2.7 million (2022: gain US$5.6 million) in respect of the translation of GBP designated loans between the Company 

and its U.S. subsidiary entities at 31 December 2023. See note 16.

9. Auditor’s remuneration

Amounts payable to the external auditors and their associates in respect of audit services:

Audit of these financial statements

10. Staff costs 

The average monthly number of employees (including Executive Directors) was:

2023
US$’000

2022
US$’000

207

161

Office and management

Operations

Their aggregate remuneration comprised:

Wages and salaries

Social security costs

Other pension costs

Share-based payments

Group

Company

2023
Number

2022
Number

2023
Number

2022
Number

2

4

6

2

1

3

1

1

2

1

1

2

Group

Company

2023
US$’000

2022
US$’000

2023
US$’000

2022
US$’000

2,106

1,380

150

119

5

91

106

19

2,380

1,596

668

84

44

2

798

640

81

44

10

775

Included within Company wages and salaries is US$0.4 million (2022: US$0.4 million) which relates to the activities of its subsidiary 
entities.

Refer to the Directors’ Report for details regarding the remuneration of the highest paid Director and the total amounts for Directors’ 
remuneration in accordance with Schedule 5 to the Accounting Regulations.

65

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

11. Taxation

Current tax:

Current year 

Deferred tax:

Origination and reversal of temporary differences

Adjustment in respect of prior years

Tax (credit)/charge on (loss)/profit for the year

The (credt)/charge for the year can be reconciled to the (loss)/profit per the income statement as follows:

(Loss)/profit before tax 

(Loss)/profit multiplied by applicable tax rate - 25% U.S. (2022: 25% U.S.)

Effects of:

Share-based payments 

Prior year U.S. tax losses now recognised

Deferred tax not previously recognised

Unrelieved tax losses carried forward 

Adjustments in respect of prior years

Tax (credit)/charge on (loss)/profit for the year

12. (Loss)/profit per ordinary share

2023
US$’000

2022
US$’000

-

-

(1,601)

1,955

41

(1,560)

(1,560)

-

1,955

1,955

2023
US$’000

(5,063)

(1,266)

2

-

(337)

-

41

2022
US$’000

21,226

5,307

52

(3,400)

(85)

81

-

(1,560)

1,955

Basic (loss)/profit per Ordinary Share is calculated by dividing the net (loss)/profit for the year by the weighted average number of 
Ordinary Shares in issue during the year. Diluted (loss)/profit per Ordinary Share is calculated by dividing the net (loss)/profit for the 
year by the weighted average number of Ordinary Shares in issue during the year adjusted for the dilutive effect of potential Ordinary 
Shares arising from the Company’s share options and warrants.

At 31 December 2022, 2.4 million share options and 89.6 million warrants were excluded from the diluted number of shares based on 
their market share price and exercise price.

The calculation of the basic and diluted (loss)/profit per Ordinary Share is based on the following data:

(Losses)/profits

(Losses)/profits for the purpose of basic and diluted (loss)/profit per Ordinary Share  
being net (loss)/profit for the year 

(3,503)

19,271

2023
US$’000

2022
US$’000

66

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

12. (Loss)/profit per ordinary share continued

2023
Number
’000

2022
Number
’000

Number of shares

Weighted average number of shares for the purpose of basic (loss)/profit per Ordinary Share

1,644,490

1,533,110

Weighted average number of shares for the purpose of basic (loss)/profit per Ordinary Share

1,644,490

1,533,110

Dilutive share options

Dilutive warrants

-

-

42,526

55,721

Weighted average number of shares for the purpose of diluted (loss)/profit per Ordinary Share

1,644,490

1,631,357

(Loss)/profit per Ordinary Share

Basic, cents per share

Diluted, cents per share 

(0.21)

(0.21)

1.26

1.18

Due to the losses incurred from continuing operations in the year ended 31 December 2023, there is no dilutive effect from the 
existing share options or warrants.

13. Exploration and evaluation assets

Cost

At 1 January 2022

Additions

At 1 January 2023

Additions

Decommissioning - change in estimates

Insurance proceeds

Funds received in lieu of grants

At 31 December 2023

US$’000

22,773

15,213

37,986

22,643

177

(10,563)

(302)

49,941

Paradox acquisition
On 21 December 2022, the Group announced that it would acquire the remaining 25% working interest in the WSU in the Paradox 
Basin, Utah from Rockies Standard Oil Company LLC (“RSOC”). As a result, the Group now holds a 100% working interest in the WSU.

Under the term of the acquisition agreement, total consideration of up to US$3 million is payable by the issue of up to 40,449,284 
new Ordinary Shares of 0.1 pence each in Zephyr Energy plc, at a price of 6.05 pence per new Ordinary Share.

The new Ordinary Shares would be issued in two tranches:

••   A first tranche of 13,483,095 new Ordinary Shares to be issued in settlement of loan notes of US$1 million, on completion of the 

acquisition.

••   A second tranche of 26,966,189 new Ordinary Shares to be issued in settlement of loan notes of US$2 million, upon Zephyr’s final 
investment decision with respect to the commencement of operations at the Powerline Road gas processing plant which was 
acquired in August 2022. If the final investment decision is not made by 1 January 2029 the Group has no further obligation to 
issue the second tranche.

On 10 February 2023, the Group announced that it had completed the acquisition and issued 13,483,095 new Ordinary Shares of 0.1 
pence each in Zephyr Energy plc, at a price of 6.05 pence per new Ordinary Share, in respect of the first tranche. See notes 23 and 26.

67

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statements               
               
Notes to the financial statements

13. Exploration and evaluation assets continued

State 36-2 well control incident
On 7 April 2023, as workover operations were being completed on State 36-2, the well experienced a significant control issue. All 
relevant authorities were notified and a specialist well control team recommended by the Group’s insurers was deployed to bring the 
well under control as quickly as possible. Well control efforts were successful and remediation and clean-up operations were completed. 
A third-party confirmatory environmental survey found no evidence of lingering environmental impact. The Group also received 
confirmation from the State of Utah’s Division of Oil, Gas and Mining that the remediation work performed on the well site was 
completed in accordance with the State’s requirements.

The Group has comprehensive well control insurance coverage and the Board expects to recover substantially all costs associated 
with the incident. The Group’s policy covers expenses up to the policy limit of US$20 million for clean-up, remediation, plugging and 
abandonment of the original well, and the cost of a new well of similar design up to the point at which the incident occurred.

At 31 December 2023, a total of US$7.7 million had been recovered from the Group’s insurer. A receivable of US$2.9 million has been 
recognised in respect of expenditure not yet recovered at 31 December 2023, which has been recovered in full since the year end. 
See note 17. 

Acquisition of additional acreage
On 15 August 2023, the Group announced that it had acquired an additional 640 leased acres in the Paradox Basin at a cost of US$7,230. 
Following the acquisition, the Group now operates a total of over 46,000 gross acres in the Paradox Basin, the majority of which it 
holds as operator with a 100% interest. 

Salt Wash project
On 18 October 2023, the Group announced a proposed farm-in to a minimum 75% working interest in a 1,047-acre leasehold position in 
the Salt Wash Field, a previously producing asset with proven oil, gas and helium reserves, located three miles to the south of the 
Group’s WSU.

The key terms of the farm-in which completed on 6 September 2023, were as follows:

••   An initial payment of US$0.3 million due within 30 days of the transaction completing.

••   A second payment of US$0.3 million due within 60 days of the transaction completing.

••   The Group is committed to drill, log and case one vertical delineation well, with spudding prior to 30 June 2024 to obtain a 100% 

share in the leasehold.

••   The seller has the option to back-in to the lease holding at a 25% working interest, with no historic cost exposure, once the 

delineation well is drilled and a field development plan has been proposed by Zephyr. Thereafter, the seller would become a fully 
paying 25% working interest partner.

The total consideration of US$0.6 million has been treated as an acquisition of assets at 31 December 2023.

In June 2024, the Group announced that the drilling deadline had been extended to 1 September 2024.

U.S. Department of energy funding
On 9 December 2022, the Group announced that it had secured additional US$1 million research grant funding from the University of 
Utah’s Energy and Geoscience Institute (“EGI”), to be utilised for data gathering during the drilling of the State 36-2 LN-CC well. The 
grant was not concluded during the year ended 31 December 2023 and the Group received US$0.3 million for historical expenditure 
in lieu of this award. The carrying value of the Group’s exploration and evaluation assets have been presented net of the funds received.  

Impairment
The Directors assessed the indicators of impairment as set out in IFRS 6 and no indicators or impairment were identified. On this 
basis the Directors have satisfied themselves that there was no requirement to perform an impairment test at 31 December 2023 
and, as a result, no provision for impairment has been made in respect of these assets at 31 December 2023 (2022: nil). See note 4.

68

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

14. Property and equipment

Group

Company

Oil and gas 
properties
US$’000

Office  
equipment
US$’000

Right-of-use
assets
US$’000

Total
US$’000

Office  
equipment
US$’000

Right-of-use
assets
US$’000

Total
US$’00  

Cost

At 1 January 2022

Business combination

Acquisitions

Additions

Exchange differences

At 1 January 2023

Additions

Disposals

Decommissioning -  
change in estimates

Exchange differences

At 31 December 2023

Accumulated depreciation

At 1 January 2022

Charge for the year 

Exchange differences

At 1 January 2023

Charge for the year 

Disposals

Exchange differences

At 31 December 2023

Carrying amount

At 31 December 2023

At 31 December 2022

At 1 January 2022

12,902

40,199

3,362

9,757

-

66,220

10,468

(2,792)

463

-

74,359

1,755

12,666

-

14,421

9,607

(449)

-

23,579

50,780

51,799

11,147

27

-

-

-

(3)

24

-

-

-

1

25

18

2

(2)

18

2

-

1

21

4

6

9

-

-

-

-

-

-

77

-

-

-

12,929

40,199

3,362

9,757

(3)

66,244

10,545

(2,792)

463

1

77

74,461

-

-

-

-

21

-

-

21

56

-

-

1,773

12,668

(2)

14,439

9,630

(449)

1

23,621

50,840

51,805

11,156

27

-

-

-

(3)

24

-

-

-

1

25

18

2

(2)

18

2

-

1

21

4

6

9

The Group depreciation and depletion charge has been allocated to the income statement as follows: 

Depreciation, depletion and amortisation

Administrative expenses

-

-

-

-

-

-

77

-

-

-

27

-

-

-

(3)

24

77

-

-

1

77

102

-

-

-

-

21

-

-

21

56

-

-

18

2

(2)

18

23

-

1

42

60

6

9

2023
US$’000

9,607

23

9,630

2022
US$’000

12,666

2

12,668

Impairment
At 31 December 2023, the Directors considered the requirements of IAS 36 Impairment of assets in respect of its oil and gas 
properties. They have satisfied themselves that there were no indicators of impairment and, therefore, there was no requirement to 
perform an impairment test. As a result, no provision for impairment has been made in respect of these assets at 31 December 2023 
(2022: nil). See note 4.

69

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

15. Derivative contracts

During the year ended 31 December 2023, the Group entered into the following derivative contracts to mitigate its exposure to 
fluctuations in commodity prices.

Fair value
   31 December 
                  2023
US$’000

Term

Oil
Contracts

Swap

Swap

Swap

Swap

Swap

Swap

Swap

Swap

Swap

Volume
Bbl

7,000

7,000

5,000

5,000

5,000

4,000

4,000

3,000

3,000

Pricing point

WTI NYMEX

WTI NYMEX

WTI NYMEX

WTI NYMEX

WTI NYMEX

WTI NYMEX

WTI NYMEX

WTI NYMEX

WTI NYMEX

Strike price 
per bbl
US$

81.50

81.33

80.81

80.17

79.49

  1 April 2022 to 30 April 2023

1 May 2023 to 31 May 2023

1 June 2023 to 30 June 2023

1 July 2023 to 31 July 2023

1 August 2023 to 31 August 2023

78.72 1 September 2023 to 30 September 2023

78.05

77.40

76.74

1 October 2023 to 31 October 2023

1 November 2023 to 30 November 2023

1 December 2023 to 31 December 2023

Settled

Settled

Settled

Settled

Settled

Settled

Settled

Settled

Settled

At 31 December 2023, the Group had the following outstanding derivative contract:

Oil
Contracts

Volume
Bbl

Pricing point

Strike price 
per bbl
US$

Fair value
   31 December 
                  2023
US$’000

Term

Swap

27,000

WTI NYMEX

82.20

1 January 2024 to 31 March 2024

278

The fair value of the outstanding contracts at 31 December 2023 has been recognised as follows:

Non-current assets

Current assets 

2023
US$’000

2022
US$’000

-

278

278

175

1,133

1,308

The fair value measurement of derivative contracts has been categorised as Level 1 in the fair value hierarchy as the measurement 
inputs are quoted prices in active markets for identical assets at the measurement date.

The recognised gain on derivative contracts was as follows:

2023
US$’000

2022
US$’000

1,441

(1,029)

412

473

1,308

1,781

Realised gain 

Change in fair value 

70

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

16. Investments

Cost

At 1 January 2022

Additions

Exchange differences

At 1 January 2023

Additions

Exchange differences

At 31 December 2023

Impairment

At 1 January 2022

Exchange differences

At 1 January 2023

Exchange differences

At 31 December 2023

Carrying amount

At 31 December 2023

At 31 December 2022

Company

Shares in 
subsidiary 
undertakings
US$’000

Loans to
subsidiary
undertakings
US$’000

Total
US$’000

72,114

12,790

(7,933)

76,971

6,089

4,233

66,851

12,790

(7,375)

72,266

6,089

3,983

82,338

87,293

31,788

(3,372)

28,416

1,508

29,924

37,051

(3,930)

33,121

1,758

34,879

5,263

-

(558)

4,705

-

250

4,955

5,263

(558)

4,705

250

4,955

-

-

52,414

43,850

52,414

43,850

Company
The Company has outstanding loans made to its subsidiaries which incur interest at a rate of 1% above the UK base rate. The loans 
are due for repayment once the subsidiaries are generating surplus cash flows from their revenue-generating activities, having met 
their operating, administrative and capital expenditure. This is not anticipated to happen within the next twelve months and, 
therefore, the loans are presented within non-current assets. The Board has assessed the recoverability of the loans and investments 
based on the expected future cashflows arising to the Company from its subsidiary entities and consider that no additional provision 
(2022: nil) should be recognised in the period.

71

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

16. Investments continued

The Company had investments in the following subsidiary undertakings as at 31 December 2023:

Directly owned:

VANE Minerals (UK) Limited

Rose Petroleum (UK) Limited

Indirectly owned:

Rose Petroleum (US) LLC

Rose Petroleum (Utah) LLC

Zephyr Bakken LLC

Zephyr Williston LLC

Zephyr Hawk LLC

Zephyr Salt Wash LLC

Place of 
incorporation 
(or registration) 
and operation

Proportion
of ownership 
interest

Proportion of 
voting power 
held

UK

UK

U.S.

U.S.

U.S.

U.S.

U.S.

U.S.

100%

100%

100%

100%

100%

100%

100%

100%

100%

100%

100%

100%

100%

100%

100%

100%

Principal activity

Dormant

Holding company

Holding company

Exploration and development

Production and development 

Production and development 

Dormant

Exploration and development

During the year Zephyr Salt Wash LLC was formed in the U.S. and has not yet commenced trading.

The registered office address for all companies incorporated in the United Kingdom is 20-22 Wenlock Road, London, N1 7GU.

The registered office address for all companies registered in the U.S. is 7310 W 52nd Avenue, Suite A116, Arvada, Colorado, 80002.

17. Trade and other receivables

Trade receivables

VAT recoverable

Other receivables

Prepayments

Group

Company

2023
US$’000

4,577

32

3,119

169

7,897

2022
US$’000

3,919

41

330

347

4,637

2023
US$’000

2022
US$’000

-

32

-

64

96

-

41

-

41

82

Trade receivables are due from third-party working interest operators. The Group consistently assesses the collectability of these 
receivables and at 31 December 2023 do not consider that any allowance for credit losses is required.

At 31 December 2023, other receivables include the sum of US$0.2 million (2022: US$0.3 million) in respect of amounts due in 
respect of settled derivative contracts.

At 31 December 2023, other receivables include the sum of US$2.9 million (2022: nil) in respect of insurance recoveries relating to 
the well incident which took place during the year, and which had not yet been recovered. All insurance proceeds have been 
recovered in full since 31 December 2023. See note 13.

The Directors consider that the carrying amount of trade and other receivables approximates to their fair value, and represents the 
Group’s maximum exposure to credit risk. 

72

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

18. Cash and cash equivalents

Cash and cash equivalents held by the Group and the Company as at 31 December 2023 were US$3.6 million and US$40,000 
respectively (2022: US$9 million, US$0.1 million). The Directors consider that the carrying amount of these assets approximate to 
their fair value and do not believe that the Group is exposed to any significant credit risk on its cash.

19. Trade and other payables

Trade payables

Taxes and social security

Other payables

Accruals 

2023
US$’000

5,115

26

112

1,730

6,983

Group
2022
US$’000

8,881

21

110

3,508

12,520

2023
US$’000

Company
2022
US$’000

85

26

-

339

450

121

21

1

316

459

Trade payables and accruals principally comprise amounts outstanding for trade purchases and ongoing costs. 

Other payables primarily represent the potential liability due to the German licencing authorities in respect of historical, relinquished 
hydrocarbon licences in south-western Germany. The Group has continued to recognise the remaining potential liability although it 
continues to negotiate further reductions with the German licencing authorities. 

No interest is generally charged on balances outstanding.

The Group has financial risk management policies to ensure that all payables are paid within the credit time frame.

The Directors consider that the carrying amount of trade and other payables approximates to their fair value. 

20. Borrowings

FIBT facility

Term loan

Revolving credit 

Capitalised debt issue costs

SGRI

Revolving credit 

Capitalised debt issue costs

Promissory note

Loan 

Total borrowings

2023
US$’000

Group

2022
US$’000

10,943

15,000

15,129

8,000

(119)

(239)

25,824

22,890

9,494

(56)

9,438

2,580

(77)

2,503

89

-

35,351

25,393

73

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

20. Borrowings continued

Current borrowings
Non-current borrowings

Group

2023
US$’000

28,950
6,401
35,351

2022
US$’000

14,572
10,821
25,393

Remaining contractual maturity analysis
The following table details the Group’s remaining maturity for its borrowings. The table has been drawn up based on the undiscounted 
cash flows based on the earliest date on which the borrowings are required to be paid. The table includes both principal and interest 
cash flows.

Maturity analysis

Maturity analysis
Less than 6 months
6 months to 1 year
1 year to 2 years
2 years to 5 years

Group

2023
US$’000

2022
US$’000

13,109
18,103
5,086
1,699
37,997

2,543
14,037
5,086
6,782
28,448

First International Bank & Trust (“FIBT”)
On 16 February 2022, the Group entered into credit facility agreements with FIBT through its U.S. subsidiaries. Under the terms of the 
agreements the Group received a term loan of US$18 million, repayable by 48 monthly instalments, and a 12-month revolving credit 
facility of US$10 million, both of which incurred interest at a rate of 6.74%.

The revolving credit facility has a standard redetermination every six months and was increased to a commitment of up to US$13 
million in October 2022, incurring interest at a rate of 9.74%. 

In October 2023, the repayment term of the revolving credit facility was extended to 16 October 2024, and the interest charge was 
adjusted to a variable rate equal to the Wall Street Prime Rate plus 2.5% subject to a minimum rate of 6.74%.

On 21 December 2023, the revolving credit facility was increased to a commitment of up to US$15.2 million with the same 
repayment and interest terms.

At 31 December 2023, the Group had drawn US$15 million in respect of the facility.

In June 2024, the Group completed its semi-annual redetermination of the existing revolving credit facility and entered into a new 
facility agreement with FIBT. Under the terms of the agreement, the Group received a new term loan of US$5.6 million. The new term 
loan will amortise monthly over four years and has an interest rate of 10% per annum. 

The revolving credit is subject to a covenant which is measured on an annual basis. The Group was in full compliance with the terms 
of the covenant in the periods reported.

FIBT has a lien on the assets of the Group’s U.S. subsidiaries, Zephyr Bakken LLC and Rose Petroleum (Utah) LLC.

74

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

20. Borrowings continued

SGRI
On 19 December 2022, the Group entered into a facility agreement with an experienced U.S. based institutional investor through its 
U.S. subsidiary Zephyr Williston LLC. Under the terms of the agreement the Group received a 12-month revolving credit facility of up 
to US$8 million incurring interest at a rate 12%. 

On 13 October 2023, the revolving credit facility was increased to US$8.6 million and the repayment term was extended to 19 March 2024.

Interest and fees have been added to the loan and are due for repayment on the same terms as the facility.

On 30 April 2024, the repayment term of the revolving credit facility was further extended to 31 May 2024, on which date, it was 
further extended to 30 June 2024.

On 3 May 2024, the Group announced that it had retired US$3.88 million of the facility through the issuance of US$3.88 million of 
equity comprised of 64,045,768 new Ordinary Shares of 0.1 pence each in Zephyr Energy plc at a price of 4.85 pence per new 
Ordinary Share. See note 29.

In June 2024, the Group announced that it had fully repaid the remaining US$6 million of the facility.  

Promissory note
On 1 August 2023, the Group entered into an agreement for a principal sum of US$160,000 repayable in six monthly instalments of 
US$16,500 and a final payment of US$75,000 due in February 2024. The note was related to oilfield equipment and the lender held 
collateral over that equipment until the principal was repaid.

The movement in total borrowings during the year was:

At 1 January 
Net cashflows - financing activities - net additions to borrowings
Non-cash movements - movement in capitalised interest and loan costs
At 31 December 

21. Deferred tax 

At 1 January 
(Credit)/charge
At 31 December

Represented by:

U.S. tax losses 
Oil and gas property
Decommissioning
Unrealised foreign gain
Mark to Market adjustments
Temporary timing differences
Net deferred tax liability

2023
US$’000

25,393
9,016
942
35,351

2022
US$’000

4,060
21,569
(236)
25,393

2023
US$’000

2022
US$’000

1,955
(1,560)
395

-
1,955
1,955

2023
US$’000

(12,586)
14,887
(1,267)
730
70
(1,439)
395

2022
US$’000

(9,511)
10,764
(1,034)
1,409
327
-
1,955

Unrelieved tax losses arising in the UK of US$4.9 million (2022: US$6.2 million) have not been recognised as a deferred tax asset as 
there is currently insufficient evidence that the asset will be recoverable in the foreseeable future. The losses can be carried forward 
indefinitely but must be utilised in relation to the same operations. 

75

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

22. Provisions 

At 1 January 
Business combinations
Additions
Disposal
Change in estimates
Accretion interest
At 31 December
Non-current provision

Group  Decommissioning           

2023
US$’000

2022
US$’000

4,138
-
268
(80)
372
369
5,067
5,067

508
2,319
2,146
-
(955)
120
4,138
4,138

In accordance with the Group’s environmental policy and applicable legal requirements, where a liability for the retirement of a well, 
removal of production equipment and site restoration at the end of the production life of a well exists, the Group recognises a 
liability for decommissioning. 

During the year ended 31 December 2023, the Group recognised a provision for the decommissioning liability in respect of wells 
where a change of status indicated the requirement for decommissioning provisions and any changes in estimates in respect of all 
relevant assets at 31 December 2023. See note 4.

The relevant rates used by the Group in calculating the provision for decommissioning are:

Inflation factor

Risk free rate

The cost of decommissioning assets is included as part of the relevant asset as follows:

Exploration and evaluation assets 

Oil and gas properties

31 December
2023
%

31 December 
2022
%

3.35

4.20

2.36

4.14

2023
US$’000

2022
US$’000

2,167

2,408

4,575

1,990

2,021

4,011

76

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

23. Share capital

Authorised

Ordinary Shares of 0.1 pence each

Deferred Shares of 9.9 pence each

Allotted, issued and fully paid

Ordinary Shares of 0.1 pence each

Deferred Shares of 9.9 pence each

Group and Company

2023

Number
‘000

US$’000

2022

Number
‘000

7,779,297

9,911

7,779,297

227,753

28,725

227,753

8,007,050

38,636

8,007,050

1,686,502

2,263

1,560,746

227,753

40,305

227,753

1,914,255

42,568

1,788,499

US$’000

9,411

27,278

36,689

2,107

40,305

42,412

The Deferred Shares are not listed on AIM, do not give the holders any right to receive notice of, or to attend or vote at, any general 
meetings, have no entitlement to receive a dividend or other distribution or any entitlement to receive a repayment of nominal 
amount paid up on a return of assets on a winding up nor to receive or participate in any property or assets of the Company. The 
Company may, at its option, at any time redeem all of the Deferred Shares then in issue at a price not exceeding £0.01 from all 
Shareholders upon giving not less than 28 days’ notice in writing.

Due to the difference in functional and presentation currencies of the Parent Company, foreign exchange differences can arise 
between the authorised share capital which is restated at each period end, and the allotted, issued and fully paid share capital which 
is presented at historical rates of exchange. 

Issued ordinary share capital
On 1 February 2022, the Company issued 66,500,000 Ordinary Shares of 0.1 pence each at a price of 5 pence per Ordinary Share, 
raising gross proceeds of US$4.5 million (£3.3 million).

On 11 February 2022, the Company issued 189,500,000 Ordinary Shares of 0.1 pence each at a price of 5 pence per Ordinary Share, 
raising gross proceeds of US$12.9 million (£9.5 million).

On 3 January 2023, the Company issued 22,272,726 Ordinary Shares of 0.1 pence each in respect of warrants which were exercised 
on 29 December 2022 at a price of 2 pence per Ordinary Share, raising gross proceeds of US$0.5 million (£0.45 million) in the year 
ended 31 December 2022. See note 24.

On 10 February 2023, the Company issued 13,483,095 Ordinary Shares of 0.1 pence each at a price of 6.05 pence per Ordinary Share 
in respect of the acquisition by the Group of the remaining 25% working interest in the WSU in the Paradox Basin, Utah from RSOC. 
This has been treated as a share-based payment transaction. See notes 13 and 26.

On 12 June 2023, the Company issued 90,000,000 Ordinary Shares of 0.1 pence each at a price of 3.5 pence per Ordinary Share, 
raising gross proceeds of US$3.9 million (£3.2 million).

At 1 January 2022

Allotment of shares 

At 1 January 2023

Allotment of shares 

At 31 December 2023

Ordinary 
Shares
Number
‘000

Deferred 
Shares
Number
‘000

1,304,746

227,753

256,000

-

1,560,746

227,753

125,756

-

1,686,502

227,753

77

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

24. Warrant reserve 

In February 2022, the Company undertook a fundraise which resulted in the issue of 256,000,000 Ordinary Shares of 0.1 pence each. 
Subscribers were granted warrants to subscribe for 64,000,000 new Ordinary Shares, representing one warrant for every four placing 
shares. The warrants are exercisable at a price of 7.5 pence per Ordinary Share for a period of three years from the date of issue. 

The fair value of the warrants granted to subscribers was US$1.6 million and this was recognised as a movement between equity 
reserves.

On 29 December 2022, 22,272,726 warrants were exercised at a price of 2 pence per Ordinary Share, raising gross proceeds of 
US$0.5 million (£0.45 million). See note 23.

The fair value of the warrants exercised was US$0.12 million and this was recognised as a movement between equity reserves.

There have been no further grants or exercise of warrants during the year ended 31 December 2023.

At 1 January 2022

Granted

Exercised

At 1 January 2023 and 31 December 2023

 25. Reserves 

Warrants
Number
‘000

22,273

64,000

(22,273)

64,000

The share premium account represents the sum paid, in excess of the nominal value, of shares allotted, net of the costs of issue.

The shares to be issued reserve represents equity funds received for which shares have not yet been issued.

The warrant reserve represents accumulated charges made in respect of the issue of warrants to Shareholders. See note 24.

The share-based payment reserve represents accumulated charges made under IFRS 2 in respect of share-based payments.

The cumulative translation reserve represents foreign exchange differences arising on the translation of foreign operations. The 
cumulative translation reserve also represents the net effect of the fact that the functional currency of the parent undertaking is 
GBP, whilst its reporting currency is US$, resulting in exchange differences on translation of the parent undertakings equity.

The accumulated deficit includes all current and prior period retained profits/(losses).

26. Share-based payments 

Equity settled share option plan
The Company has a Share Option Plan, 2013 Share Option Plan Part A (employees) and 2013 Share Option Plan Part B (non-
employees), under which options to subscribe for the Company’s shares have been granted to certain Directors and to selected 
employees and consultants. 

At 31 December 2023, 45 million share options had been granted under the terms of the Share Option Plans and not exercised. 

The Company has no legal or constructive obligation to repurchase or settle the options in cash. The latest date for exercise of the 
options is 28 May 2030 and, unless otherwise agreed, the options are forfeited if the employee or consultant leaves the Group 
before the options vest, or if those options which have vested are not exercised within three months of leaving.

78

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

26. Share-based payments continued

Details of the share options outstanding at the end of the year were as follow:

Outstanding at 1 January

Expired

Lapsed

Outstanding at 31 December

Exercisable at 31 December

2023

2022

Number of  
options
‘000

Weighted  
average  
exercise price
pence

Number of 
options
‘000

Weighted 
average
exercise price
pence

45,031

(267)

-

44,764

44,764

4.8

85.92

-

4.3

4.3

45,281

-

(250)

45,031

34,365

5.57

-

145.4

4.8

6.1

The options outstanding at 31 December 2023 had an estimated weighted average remaining contractual life of 6 years (2022: 7 
years), with an exercise price ranging between 0.1 pence and 342.5 pence.

There were no options issued during the year ended 31 December 2023 (2022: nil).

Share-based payment transaction
On 10 February 2023, the Company issued 13,483,095 new Ordinary Shares of 0.1 pence each at a price of 6.05 pence per new 
Ordinary Share in respect of the acquisition by the Group of the remaining 25% working interest in the WSU in the Paradox Basin, 
Utah from RSOC. Under the structure of the acquisition agreement, the fair value of the shares issued could be measured directly, 
and accordingly an addition to exploration and evaluation assets of US$1 million has been recognised during the year ended 31 
December 2023. See notes 13 and 23.

Warrants 
On 11 February 2022, the Company granted 17,066,667 warrants to TPI, in respect of broker services provided by them in relation to 
the placing of the Company’s Ordinary Shares. The warrants permit the holder to subscribe for one new Ordinary Share of 0.1 pence 
at a price of 7.5 pence per Ordinary Share and are exercisable at any time for a period of three years from the date of issue. 

On 11 February 2022, the Company granted 8,500,000 warrants to TPI, in respect of broker services provided by them in relation to 
the raising of bridge loan facilities. The warrants permit the holder to subscribe for one new Ordinary Share of 0.1 pence at a price of 
7.5 pence per Ordinary Share and are exercisable at any time for a period of three years from the date of issue.

On 12 June 2023, the Company granted 10,388,571 warrants to TPI, in respect of broker services provided by them in relation to the 
placing of the Company’s Ordinary Shares. The warrants permit the holder to subscribe for one new Ordinary Share of 0.1 pence at a 
price of 4.375 pence per Ordinary Share and are exercisable at any time for a period of three years from the date of issue.

The fair value of the warrants issued during the year has been calculated using the Black-Scholes model. The significant inputs into 
the model for the IFRS 2 valuation were as follows:

Exercise price (pence)

Expected volatility (%)

Expected life (years)

Risk free rates (%)

Expected dividends

Performance condition

Grants in year
10,388,571
 Warrants

4.375

79

2.5 years

4.72

-

None

The fair value of the warrants granted during the year was US$0.2 million (2022: US$0.6 million). The share price of the Company’s 
Ordinary Shares on the date of grant was 3.45 pence per Ordinary Share.

79

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

26. Share-based payments continued

In accordance with the Group’s accounting policy, the costs of an equity transaction are accounted for as a deduction from equity to 
the extent that they are incremental costs directly attributable to the equity transaction that would otherwise have been avoided. As 
a result, the US$0.2 million (2022: US$0.4 million) fair value charge relating to the warrants issued in respect of services provided in 
relation to the placing of the Company’s Ordinary Shares has been treated as a movement between equity reserves.

During the year ended 31 December 2022, 1,360,000 warrants expired. The fair value of the expired warrants was US$11,513 and this 
was recognised as a movement between equity reserves. No warrants expired during the year ended 31 December 2023.

No warrants have been exercised during the year ended 31 December 2023 (2022: nil).

Details of the warrants included in share-based payments and outstanding at the end of the year were as follow:

At 1 January 2022

Granted

Expired

At 1 January 2023

Granted

At 31 December 2023

 Warrants 
Number
‘000

33,710

25,567

(1,360)

57,917

10,388

68,305

In the year ended 31 December 2023, the Company recognised a total expense of US$6,473 (2022: US$0.2 million) in respect of 
share-based payments, being US$6,473 (2022: US$24,792) in respect of the share option plan and US$ nil (2022: US$0.2 million) in 
respect of warrants.

In April 2024, the Company issued a total of 61,503,028 share options to Directors, certain employees and consultants of Zephyr, 
either to reflect historic awards under the Company’s Long-Term Incentive Plan, bonuses for performances achieved in 2021 and 
2022, to satisfy employee contractual commitments or commitments in lieu of deferred remuneration and fees from 2020, during 
the COVID-19 pandemic.

27. Financial instruments 

Financial risk management objectives
Management provides services to the business, co-ordinates access to domestic and international financial markets and monitors 
and manages the financial risks relating to the operations of the Group. These risks include cashflow interest rate risk, foreign 
currency risk, credit risk, liquidity risk, and commodity price risk.

The policies for managing these risks are regularly reviewed and agreed by the Board who aim to minimise potential adverse effects 
on the Group’s financial performance on a continuous basis.

The Group does not enter into or trade financial instruments, including derivative financial instruments, for speculative purposes.

Capital risk management
The Group manages its capital to ensure that entities in the Group will be able to continue as going concerns while maximising the 
return to Shareholders through the optimisation of the debt and equity balance. The Group’s overall strategy is to minimise costs and 
liquidity risk.

The Group is not subject to externally imposed capital requirements.

The capital structure of the Group consists of cash and cash equivalents, interest bearing borrowings, lease liabilities and equity 
attributable to owners of the Parent Company, comprising issued capital, reserves and retained earnings.

The Group plans its capital requirements on a regular basis and as part of this review the Directors consider the cost of capital and 
the risks associated with each class of capital.

80

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

27. Financial instruments continued

Material accounting policies
Details of the material accounting policies and methods adopted, including the criteria for recognition, the basis of measurement, 
the basis on which income and expenses are recognised, in respect of each class of financial asset, financial liability and equity 
instrument are disclosed in note 3. 

Categories of financial instruments

Financial assets measured at amortised cost

Cash and cash equivalents

Trade receivables

Other receivables

Loans to subsidiary undertakings

Financial assets measured at fair value

Derivative contracts – hierarchy, Level 1

Financial liabilities measured at amortised cost

Trade payables

Other payables

Accruals

Borrowings

Lease liabilities

Group

Company

2023
US$’000

2022
US$’000

2023
US$’000

2022
US$’000

3,611

4,577

3,119

-

8,996

3,919

330

-

11,307

13,245

40

-

-

52,923

52,963

118

-

-

43,850

43,968

Group

Company

2023
US$’000

2022
US$’000

2023
US$’000

2022
US$’000

278

1,307

-

-

Group

Company

2023
US$’000

2022
US$’000

2023
US$’000

2022
US$’000

5,115

112

1,730

8,881

110

3,508

35,526

25,709

70

-

42,553

38,208

85

-

339

-

70

494

121

1

316

-

-

438

Fair value of financial instruments
The Directors consider that the carrying amount of its financial instruments approximates to their fair value.

Interest rate risk management
The Group’s policy on interest rate management is agreed at Board level and is reviewed on an on-going basis. 

The Group is exposed to interest rate risk on cash held on deposit at banks but these accounts are held for liquidity rather than 
investment and the interest rate risk is not considered material to the Group.

The Group’s main interest rate risk arises from borrowings that incur interest charges at a fixed rate above established parameters. 
See note 20. However, the majority of the Group’s borrowings incur a fixed interest rate charge, and those that do not, are repayable 
within the short term. As a result, the Directors do not consider that the Group has substantial exposure to fluctuating interest rates 
on its liabilities and accordingly, no sensitivity analysis has been presented.

81

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

27. Financial instruments continued

Foreign exchange risk and foreign currency risk management
The Group undertakes certain transactions denominated in foreign currencies, with the result that exposure to exchange rate 
fluctuations arises. 

Other than small amounts of cash balances and other payables that are held in currencies other than the functional currency of the 
relevant entity, the majority of the Group’s monetary assets and monetary liabilities are denominated in the functional currency of 
the relevant entity. As a result, there is limited exposure to fluctuations in exchange rates that would impact the income statement of 
the Group.

The carrying amounts of the Group’s foreign currency denominated monetary assets and monetary liabilities at the reporting date 
are as follows:

GBP

Liabilities

Assets

2023
US$’000

2022
US$’000

2023
US$’000

2022
US$’000

118

90

30

71

The Group has intercompany loans which are eliminated on consolidation. However, the loans are GBP denominated loans which are 
recognised in U.S. subsidiaries as US$. As a result, the Group is exposed to exchange rate fluctuations on restatement of the loans at 
the reporting date. As the loans have not been treated as net investment in foreign subsidiaries the impact of exchange rate 
fluctuation is recognised in the income statement.

The financial statements of certain of the Group’s foreign subsidiaries are denominated in currencies that differ from the Group’s 
presentation currency. As a result, the Group is exposed to movements in US$ in respect of foreign exchange differences arising on 
the translation of recognised assets and liabilities, which may impact equity. 

The Group does not normally hedge against the effects of movements in exchange rates. 

Foreign currency sensitivity analysis
Sensitivity analysis has been performed to indicate how the profit or loss would have been affected by changes in the exchange rate between 
GBP and US$. The analysis is based on the weakening and strengthening of US$ by 5%. A movement of 5% reflects a reasonably positive 
sensitivity when compared to historical movements over a three to five-year timeframe. The sensitivity analysis includes only outstanding 
foreign currency denominated monetary items and adjusts their translation at the period end for a 5% change in foreign currency rates.

The table below details the Group’s sensitivity to a 5% decrease in US$ against GBP. A positive number below indicates an increase in 
profit where US$ strengthens 5% against GBP. For a 5% weakening of US$ there would be an equal and opposite impact on the 
profit, and the balance below would be negative. The sensitivity calculated below is primarily attributable to the restatement of GBP 
denominated intercompany loans in the Group’s U.S. subsidiaries.

Income statement

2023
US$’000

2022
US$’000

(3,105)

(2,616)

Liquidity risk management
Liquidity risk is the risk that the Group will not be able to meet its financial obligations when they fall due. Ultimate responsibility for 
liquidity risk management rests with the Board of Directors, which has built an appropriate liquidity risk management framework for 
the management of the Group’s short, medium and long-term funding and liquidity management requirements. The Group manages 
liquidity risk by maintaining adequate cash reserves and by continuously monitoring forecast and actual cashflow.

With the exception of borrowings, see note 20, and lease liabilities, the Group’s financial liabilities mature within less than six months. 
At 31 December 2023, the Group was compliant with all the terms of its borrowings.

The Group does not face a significant liquidity risk with regard to its lease liabilities, which are monitored by the Board.

82

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

27. Financial instruments continued

At 31 December 2023, the maturity of undiscounted borrowings including interest was as follows:

Maturity analysis

Less than 6 months

6 months to 1 year

1 year to 2 years

2 years to 5 years

Group

Company

2023
US$’000

2022
US$’000

2023
US$’000

2022
US$’000

13,128

18,123

5,117

1,699

2,543

14,037

5,086

6,782

38,067

28,448

19

20

31

-

70

-

-

-

-

-

Credit risk management
Credit risk refers to the risk that a counterparty will default on its contractual obligations resulting in financial loss to the Group. 

The maximum exposure to credit risk at the reporting date to recognised financial assets is the carrying amount, net of any 
provisions for impairment of those assets. The Group does not hold any collateral. Generally, financial assets are written off when 
there is no reasonable expectation of recovery.

The Group does not have any significant credit risk exposure on trade and other receivables, which are current and collectible.

The credit risk on liquid funds (cash) is considered to be limited because the counterparties are financial institutions with high and 
good credit ratings assigned by international credit-rating agencies.

Commodity price management
The Group is exposed to commodity price risks relating to its ongoing business operations and uses derivative contracts to manage this risk.

The Group uses oil forward contracts to manage some of its transaction exposures and are intended to reduce the level of risk due to 
fluctuations in oil price. The forward contracts are not designated as cashflow hedges and are entered into for periods consistent 
with exposure of the underlying transactions. 

28. Related party transactions

Amounts due from subsidiaries
Group
Other than foreign exchange losses and gains attributable to the restatement of GBP denominated intercompany loans in the 
Company’s U.S. subsidiaries, balances and transactions between the Company and its subsidiaries which are related parties, have 
been eliminated on consolidation and are not disclosed in this note. A foreign exchange loss of US$2.7 million (2022: gain US$5.6 
million) has been recognised in the income statement for the year ending 31 December 2023.

Company
The Company has entered into a number of unsecured related party transactions with subsidiary undertakings. The most significant 
transactions carried out between the Company and their subsidiary undertakings are management charges for services provided to 
the subsidiary company and long-term financing. Details of these transactions are as follows:

Loans 

Management charges

Interest (1% over UK base rate)

Capital contribution

2023

2022

Transactions
 in the year
US$’000

Amounts
owing
US$’000

Transactions 
in the year
US$’000

Amounts
 owing 
US$’000

2,824

669

2,595

-

64,973

11,042

58,952

6,901

9,860

603

533

1,215

-

5,902

6,839

573

83

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

28. Related party transactions continued

Remuneration of key management personnel
The remuneration of key management personnel of the Group is set out below in aggregate for each of the categories specified in 
IAS 24 Related Party Disclosures. 

2023

2022

Purchase of
  services
US$’000

Amounts
owing
US$’000

Purchase of 
services
US$’000

Amounts
owing
US$’000

Short-term employee benefits

Post-employment benefits

Share-based payments

1,462

72

6

1,540

-

59

-

59

1,363

84

19

1,466

The amounts outstanding are unsecured and will be settled in cash. No guarantees have been given or received.

All transactions with related parties have been conducted on an arm’s length basis.

Directors’ pensions 

The number of Directors to whom retirement benefits are accruing under money purchase schemes was

2023
No

2

-

67

-

67

2022
No

2

Services
During the year ended 31 December 2023, the Group received services from OCE which is a related party as JC Harrington is 
indirectly the controlling shareholder and RL Grant is also a shareholder. 

Office services

2023
US$’000

2022
US$’000

15

17

Directors warrants 
On 3 January 2023, the Company issued 22,272,726 Ordinary Shares of 0.1 pence each in respect of warrants which were exercised 
on 29 December 2022 at a price of 2 pence per Ordinary Share, raising gross proceeds of US$0.5 million (£0.45 million) in the year 
ended 31 December 2022. See note 24.

84

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsNotes to the financial statements

29. Post balance sheet events

Borrowings
SGRI
On 30 April 2024, the repayment term of the SGRI revolving 
credit facility was extended to 31 May 2024, on which date, it 
was further extended to 30 June 2024. 

On 3 May 2024, the Group announced that it had retired 
US$3.88 million of the facility through the issuance of US$3.88 
million of equity comprised of 64,045,768 new Ordinary Shares 
of 0.1 pence each in Zephyr Energy plc at a price of 4.85 pence 
per new Ordinary Share. See note 20.

In June 2024, the Group announced that it had fully repaid the 
remaining US$6 million of the facility. See note 20.

FIBT
In June 2024, the Group completed its semi-annual 
redetermination of the existing revolving credit facility and 
entered into a new facility agreement with FIBT. Under the terms 
of the agreement, the Group received a new term loan of 
US$5.6 million. The new term loan will amortise monthly over 
four years and has an interest rate of 10% per. See note 20.

Hedging programme
In April 2024, the Group implemented an additional hedging 
programming related to oil productions from its non-operated 
asset portfolio in the Williston Basin over the period to 31 
December 2024. The programme has been implemented with 
BP Energy Company (“BP”) one of the world’s leading energy 
trading houses, as the hedge counterparty.

Share-based payments
In April 2024, the Company issued a total of 61,503,028 share 
options to Directors, certain employees and consultants of 
Zephyr, either to reflect historic awards under the Company’s 
Long-Term Incentive Plan, bonuses for performances achieved 
in 2021 and 2022, to satisfy employee contractual commitments 
or commitments in lieu of deferred remuneration and fees from 
2020, during the COVID-19 pandemic.

8585

Zephyr Energy plc Annual Report and Financial Statements 2023  Financial statementsZephyr Energy plc Annual Report and Financial Statements 2023

Other information

Directors, advisers and officers 
Glossary  

87 
88

“ Our goal for the next year  
is to move the Paradox 
project into commercial 
production”

Zephyr Energy plc Annual Report and Financial Statements 2023  

Other information

Directors, advisers and officers

Directors
RL Grant 
TH Reynolds 
GB Stein 
JC Harrington 
CJ Eadie 

Secretary
CJ Eadie

Non-Executive Chairman
Non-Executive Director
Non-Executive Director
Chief Executive Officer 
Group Finance Director

Registered office
20-22 Wenlock Road, London, N1 7GU

AUDITOR
BDO LLP
55 Baker Street
London
W1U 7EU

REGISTRAR
Link Group
29 Wellington Street
Leeds
LS1 4DL 

BANKERS
Barclays Bank Plc
Level 27
1 Churchill Place
London
E14 5HP

PUBLIC RELATIONS
Celicourt Communications Limited
4 Bream’s Buildings
London
EC4A 1HP

SOLICITORS
RBG Legal Services Limited, trading as Memery Crystal
165 Fleet Street
London
EC4A 2DY

NOMINATED ADVISER 
Allenby Capital Limited
5 St Helen’s Place
London
EC3A 6AB

JOINT BROKERS
Turner Pope Investments Ltd
3 Queen Street 
London 
W1J 5PA

Panmure Gordon (UK) Limited
40 Gracechurch Street
London
EC3V 0BT

87

Zephyr Energy plc Annual Report and Financial Statements 2023  

Other information

Glossary

OTCQB 

£ / GBP 

2P  

PDP  

PNP  

PRAX 

PUD 

ROIC  

RSOC  

Slawson  

Sproule 

U.S.  

US$ 

2U  

VERs  

WSU  

OTCQB Venture Market

Pound Sterling

Proved plus probable reserves

Producing well

Proved not producing well

Prax Group

Proved but undeveloped well

Return on invested capital

Rockies Standard Oil Company LLC

Slawson Exploration Company

Sproule International

United States

United States Dollar

Unrisked prospective resources

Verified emission reductions 

White Sands Unit

AGM  

bbls 

BLM 

bo 

boe 

boepd 

2C  

BP  

Annual General Meeting

Barrels 

U.S. Bureau of Land Management

Barrel of oil

Barrel of oil equivalent

Barrels of oil equivalent per day

Best estimate of contingent resources

BP Energy Company

CAPEX 

Capital expenditure

CGU 

Code 

CPR  

DOE  

Cash Generating Unit

Corporate Governance Code

Competent persons report

U.S. Department of Energy

Dominion Energy  Dominion Energy Utah, LLC

DUC  

DSU  

EGI 

ESG  

ECL  

E&E  

E&P  

FIBT  

HSRP  

IFRS  

IASB 

KPI  

<   

LTI  

M&A 

Drilled but uncompleted well

Drilling spacing unit

Utah’s Energy and Geoscience Institute

Environmental, social and governance

Expected credit losses

Exploration and evaluation

Evaluation and production

First International Bank and Trust

Hydraulically stimulated resource play

International Financial Reporting Standards

International Accounting Standards Board

Key performance indicator 

Less than

Lost time injuries 

Merger & Acquisition

mmboe  

Million barrels of oil equivalent 

>   

NED 

OCE 

More than

Non-Executive Director

Origin Creek Energy LLC

88

Zephyr Energy plc Annual Report and Financial Statements 2023

Design and production: 
cbgtogether.com

together

Head Office:
First Floor, Newmarket House 
Market Street, Newbury 
Berkshire, RG14 5DP

www.zephyrplc.com

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