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Enphase Energy

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FY2022 Annual Report · Enphase Energy
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

☒    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2022 

or

☐     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 
1934 

For the transition period from              to              

Commission File Number: 001-35480 

Enphase Energy, Inc. 

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)

20-4645388
(I.R.S. Employer
Identification No.)

47281 Bayside Parkway 
Fremont, CA 94538 
(Address of principal executive offices, including zip code)

(877) 774-7000 
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class:
Common Stock, $0.00001 par value per share

Trading Symbol(s)
ENPH

Name of each exchange on which registered
Nasdaq Global Market

Securities registered pursuant to Section 12(g) of the Act: None

Indicate  by  check  mark  if  the  registrant  is  a  well-known  seasoned  issuer,  as  defined  in  Rule  405  of  the  Securities 
Act. Yes ☒  No ☐

Indicate  by  check  mark  if  the  registrant  is  not  required  to  file  reports  pursuant  to  Section  13  or  Section  15(d)  of  the 
Act. Yes ☐  No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities 
Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such 
reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒  No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 
pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period 
that the registrant was required to submit such files).  Yes x  No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller 
reporting  company,  or  an  emerging  growth  company.  See  definitions  of  “large  accelerated  filer,”  “accelerated  filer,”  “smaller 
reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer

Non-accelerated filer

☒
☐

Accelerated filer

Smaller reporting company

Emerging growth company

☐
☐
☐

If an emerging growth company, indicate by checkmark if the registrant has elected not to use the extended transition period for 
complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate  by  check  mark  whether  the  registrant  has  filed  a  report  on  and  attestation  to  its  management’s  assessment  of  the 
effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) 
by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the 
registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that require a recovery analysis of incentive-
based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to § 
240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐  No ☒

The aggregate market value of the voting stock held by non-affiliates of the registrant on June 30, 2022, based upon the closing 
price of $195.24 of the registrant’s common stock as reported on the Nasdaq Global Market, was approximately $20.2 billion.

As of February 6, 2023, there were 136,497,418 shares of the registrant’s common stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE 

Portions  of  the  registrant’s  Proxy  Statement  for  the  2023 Annual  Meeting  of  Stockholders  to  be  filed  with  the  Securities  and 
Exchange Commission within 120 days after the end of the registrant’s fiscal year ended December 31, 2022 are incorporated by 
reference into Part III of this Annual Report on Form 10-K.

Business
Risk Factors
Unresolved Staff Comments
Properties
Legal Proceedings
Mine Safety Disclosures

Enphase Energy, Inc.

Table of Contents

PART I

PART II

Item 1.
Item 1A.
Item 1B.
Item 2.
Item 3.
Item 4.

Item 5.

Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities
[Reserved]
Management’s Discussion and Analysis of Financial Condition and Results of Operations

Item 6.
Item 7.
Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Financial Statements and Supplementary Data
Item 8.
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Item 9.
Item 9A.
Controls and Procedures
Item 9B. Other Information
Item 9C.

Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Item 10.
Item 11.
Item 12.
Item 13.
Item 14.

Item 15.
Item 16.

PART III
Directors, Executive Officers and Corporate Governance
Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Certain Relationships and Related Transactions, and Director Independence
Principal Accountant Fees and Services

Exhibits and Financial Statement Schedules
Form 10-K Summary
Signatures

PART IV

Page

7
17
45
45
46
46

47
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49
63
65
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Table of Contents

Cautionary Note Regarding Forward-Looking Statements

This Annual Report on Form 10-K contains “forward-looking” statements within the meaning of Section 27A of 
the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 
1934, as amended (the “Exchange Act”), about us and our industry that involve substantial risks and uncertainties. 
All statements other than statements of historical facts in this Annual report on the Form 10-K are forward-looking 
statements. In some cases, forward-looking statements can be identified by terms such as “anticipates,” “believes,” 
“could,”  “seeks,”  “estimates,”  “expects,”  “intends,”  “may,”  “plans,”  “potential,”  “predicts,  “projects,”  “should,”  “will,” 
“would” or similar expressions and the negatives of those terms. These forward-looking statements are contained 
principally in Part I, Item 1, Business; Part I, Item 1A, Risk Factors; Part II, Item 7, Management’s Discussion and 
Analysis of Financial Condition and Results of Operations; and other sections of this Annual Report on Form 10-K. 
Such statements include, but are not limited to, statements concerning the following: 

•

•

•

•

•

•

•

•

•

•

•

our  expectations  as  to  our  future  financial  performance,  including  revenue,  cost  of  revenue,  expenses, 
liquidity, cash requirements and our ability to maintain and grow our profitability;

the  capabilities,  performance  and  competitive  advantage  of  our  technology  and  products  and  planned 
changes;

timing of new product releases, and the anticipated marketing adoption of our current and future products;

our expectations regarding, and our ability to meet, demand for our products;

our business strategies, including anticipating trends and operating conditions;

growth  of  and  development  in  markets  in  which  we  target;  and  our  expansion  into  new  and  existing 
markets;

our performance in operations, including component supply management and manufacturing timelines;

our product quality and customer service;

our  expectations  regarding  the  effects  on  our  business  and  financial  performance  of  compliance  with 
applicable laws and regulations; 

our  expectations  regarding  the  COVID-19  pandemic,  geopolitical  developments,  such  as  the  conflict  in 
Ukraine,  supply  chain  disruptions  and  inflationary  pressures  and  their  impact  on  our  business  operations, 
financial performance and the markets in which we, our supplier, manufacturers and installers operate; and

the anticipated benefits and risks relating to our recent acquisitions.

  Our  actual  results  or  experience  could  differ  significantly  from  the  forward-looking  statements.  Factors  that 
could cause or contribute to these differences include those discussed in Part I, Item 1A, Risk Factors and Part II, 
Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, as well as those 
discussed elsewhere in this Annual Report on Form 10-K. 

Forward-looking  statements  are  inherently  uncertain,  and  you  should  not  place  undue  reliance  on  these 
statements,  which  speak  only  as  of  the  date  that  they  were  made.  These  cautionary  statements  should  be 
considered in connection with any written or oral forward-looking statements that we may issue in the future. We do 
not undertake any obligation to release publicly any revisions to these forward-looking statements after completion 
of the filing of this Annual Report on Form 10-K to reflect later events or circumstances or to reflect the occurrence 
of  unanticipated  events.  The  forward-looking  statements  in  this  annual  report  are  intended  to  be  subject  to 
protection afforded by the safe harbor for forward-looking statements contained in the Private Securities Litigation 
Reform Act of 1995.

In  this  Annual  Report  on  Form  10-K,  unless  otherwise  indicated  or  the  context  otherwise  requires, 
“Enphase Energy,” “Enphase,” “the Company,” “we,” “us,” and “our” refer to Enphase Energy, Inc., a Delaware 
corporation, and its subsidiaries.

Enphase Energy, Inc. | 2022 Form 10-K | 4

Table of Contents

Risk Factors Summary

Investing in our securities involves a high degree of risk. The following is a summary of the principal factors 
that  make  an  investment  in  our  securities  speculative  or  risky,  as  more  fully  described  below  in  the  section  titled 
“Risk Factors.” This summary should be read in conjunction with the “Risk Factors” section and should not be relied 
upon as an exhaustive summary of the material risks facing our business. In addition to this summary, you should 
consider  the  information  set  forth  in  the  “Risk  Factors”  section  and  the  other  information  contained  in  this  annual 
report before investing in our securities:

Risk Related to our Business, Operations and Our Industry

•

•

•

Unfavorable macroeconomic and market conditions may adversely affect our industry, business and 
financial results.

If  demand  for  solar  energy  solutions  does  not  grow  or  grows  at  a  slower  rate  than  we  anticipate,  our 
business will suffer.

The reduction, elimination or expiration of government subsidies and economic incentives for on-grid solar 
electricity applications could reduce demand for solar photovoltaic (“PV”) systems and harm our business.

• We depend on limited-source suppliers for key components and products. If we are unable to source these 
components and products on a timely basis, we will not be able to deliver our products to our customers.
Challenges relating to current supply chain constraints, including with respect to semiconductors and 
integrated circuits, could adversely impact our revenues, gross margins and results of operations.

•

•

The solar industry is highly competitive, and we expect to face increased competition as new and existing 
competitors  introduce  products  or  develop  alternative  technologies,  which  could  negatively  impact  our 
business, financial condition and results of operations.

• Our recent and planned expansion into existing and new markets could subject us to additional business, 

financial and competitive risks.

• We may fail to capture customers as we design and develop new products, and update existing products.

• We depend upon a small number of outside contract manufacturers, and our business and operations could 

be disrupted if we encounter problems with these contract manufacturers.

• We rely primarily on distributors, installers and providers of solar financing to assist in selling our products to 
customers,  and  the  failure  of  these  customers  to  perform  at  the  expected  level,  or  at  all,  would  have  an 
adverse effect on our business, financial condition and results of our operations.

•

•

The  COVID-19  pandemic  may  continue  to,  and  other  actual  or  threatened  epidemics,  pandemics, 
outbreaks,  or  public  health  crises  may  in  the  future,  adversely  affect  our  and  our  customers’  results  of 
operations and financial condition, our supply chain and our business.

The loss of, or events affecting, one of our major customers could reduce our sales and have an adverse 
effect on our business, financial condition and results of operations.

• Our energy systems, including our storage solution, integrated ACM Module, IQ8 solar microinverters and 
Ensemble  technology,  may  not  achieve  broader  market  acceptance,  which  would  prevent  us  from 
increasing our revenue and market share.

•

•

•

If our IQ Microinverters or IQ Batteries contain manufacturing defects, or our Ensemble contains software 
defects, our business and financial results could be harmed.

If we fail to retain our key personnel or if we fail to attract additional qualified personnel, we may not be able 
to achieve our anticipated level of growth and our business could suffer.

Any  failure  by  management  to  properly  manage  growth  could  have  a  material  adverse  effect  on  our 
business, operating results and financial condition.

• Our business has been and could continue to be affected by seasonal trends and construction cycles.

Enphase Energy, Inc. | 2022 Form 10-K | 5

Table of Contents

Risk Related to our Intellectual Property and Technology

• We  are  dependent  on  information  technology  systems,  infrastructure  and  data.  We  could  be  subject  to 
breaches  of  our  information  technology  systems  caused  by  system  security  risks,  failure  of  our  data 
protection,  cyber-attacks  and  erroneous  or  non-malicious  actions  or  failures  to  act  by  our  employees  or 
others  with  authorized  access  to  our  networks,  which  could  cause  significant  reputational,  legal  and 
financial damages.

•

The  software  we  use  in  providing  system  configuration  recommendations  or  potential  energy  savings 
estimates to customers relies in part on third-party information that may not be accurate or up-to-date; this 
may  therefore  generate  inaccurate  recommendations  or  estimates,  resulting  in  a  loss  of  reputation  and 
customer confidence.

• We are subject to stringent privacy laws, information security policies and contractual obligations governing 
the use, processing and transfer of personal information and any unauthorized access to, or disclosure or 
theft of personal information we gather, store or use could harm our reputation and subject us to claims or 
litigation.

•

If  we  fail  to  protect,  or  incur  significant  costs  in  enforcing,  our  intellectual  property  and  other  proprietary 
rights, our business and results of operations could be materially harmed.

• We may be subject to disruptions or failures in information technology systems and network infrastructures 

that could have a material adverse effect on our business and financial condition.

•

Third  parties  may  assert  that  we  are  infringing  upon  their  intellectual  property  rights,  which  could  divert 
management’s  attention,  cause  us  to  incur  significant  costs,  and  prevent  us  from  selling  or  using  the 
technology to which such rights relate.

Risk Related to Legal Proceedings and Regulations

•

•

Changes in current laws or regulations or the imposition of new laws or regulations, or new interpretations 
thereof, in the solar energy sector, by federal or state agencies in the United States or foreign jurisdictions 
could impair our ability to compete, and could materially harm our business, financial condition and results 
of operations.

Changes  in  the  United  States  trade  environment,  including  the  recent  imposition  of  import  tariffs,  could 
adversely affect the amount or timing of our revenues, results of operations or cash flows.

• Our  significant  international  operations  subject  us  to  additional  risks  that  could  adversely  affect  our 

business, results of operations and financial condition.

• We could be adversely affected by any violations of the FCPA, the U.K. Bribery Act, and other foreign anti-

bribery laws.

Risk Related to our Financial Condition and Liquidity

• Our gross profit may fluctuate over time, which could impair our ability to achieve or maintain profitability.
• We are under continuous pressure to reduce the prices of our products, which has adversely affected, and 

•

•

may continue to adversely affect, our gross margins.
A  drop  in  the  retail  price  of  electricity  derived  from  the  utility  grid  or  from  alternative  energy  sources,  or  a 
change in utility pricing structures, may harm our business, financial condition and results of operations.
If we do not forecast demand for our products accurately, we may experience product shortages, delays in 
product shipment, excess product inventory, difficulties in planning expenses or disputes with suppliers, any 
of which will adversely affect our business and financial condition.

• Our  focus  on  a  limited  number  of  specific  markets  increases  risks  associated  with  the  modification, 
elimination  or  expiration  of  governmental  subsidies  and  economic  incentives  for  on-grid  solar  electricity 
applications.

Enphase Energy, Inc. | 2022 Form 10-K | 6

Table of Contents

Risk Related to our Acquisition Activity

•

As part of growing our business, we have made and expect to continue to make acquisitions. If we fail to 
successfully select, execute or integrate our acquisitions, then our business and operating results could be 
harmed and our stock price could decline.

Risk Related to our Debt and Equity Securities

•

•

•

The  market  price  of  our  common  stock  may  be  volatile  or  may  decline  regardless  of  our  operating 
performance.

Conversion  of  our  Convertible  Notes  may  dilute  the  ownership  interest  of  existing  stockholders  or  may 
otherwise  depress  the  price  of  our  common  stock,  adversely  affect  our  financial  condition  and  operating 
results.

The convertible note hedge and warrant transactions and/or their early termination may affect the value of 
our common stock.

• Our financial results may vary significantly from quarter to quarter due to a number of factors, which may 

lead to volatility in our stock price.

PART I

Item 1.  Business

Our Company

We are a global energy technology company originally founded in March 2006 under the name PVI Solutions, 
Inc. in the State of Delaware and subsequently changed our name to Enphase Energy, Inc. in July 2007. We deliver 
smart, easy-to-use solutions that manage solar generation, storage and communication on one platform.

Today,  our  intelligent  microinverters  work  with  virtually  every  solar  panel  made,  and  when  paired  with  our 
award-winning smart battery technology, results in one of the industry's best-performing clean energy systems. For 
the first time in the evolution of our centuries-old grid, people can get paid for the clean energy they produce and 
share  with  their  communities,  helping  to  build  a  new  energy  future  that  harnesses  the  sun.  This  clean,  free, 
abundant source of energy can power our lives and ultimately help replace fossil fuels altogether. We have shipped 
approximately  58  million  microinverters,  and  over  3.0  million  Enphase  residential  and  commercial  systems  have 
been deployed in more than 145 countries.

We  design,  develop,  manufacture  and  sell  home  energy  solutions  that  manage  energy  generation,  energy 
storage and control and communications on one intelligent platform. We have revolutionized the solar industry by 
bringing  a  systems  approach  to  solar  technology  and  by  pioneering  a  semiconductor-based  microinverter  that 
converts  energy  at  the  individual  solar  module  level  and,  combined  with  our  proprietary  networking  and  software 
technologies, provides advanced energy monitoring and control. This is vastly different than a string inverter system 
using  string  modules,  whether  with  or  without  an  optimizer,  which  only  converts  the  energy  of  the  entire  array  of 
solar modules from a single high voltage electrical unit and lacks intelligence about the energy producing capacity of 
the solar array.

The  Enphase®  Energy  System™  brings  a  high  technology,  networked  approach  to  solar  generation  plus 
energy  storage,  by  leveraging  our  design  expertise  across  power  electronics,  semiconductors  and  cloud-based 
software  technologies.  Our  integrated  approach  to  energy  solutions  maximizes  a  home’s  energy  potential  while 
providing  advanced  monitoring  and  remote  maintenance  capabilities. The  Enphase  Energy  System  uses  a  single 
technology  platform  for  seamless  management  of  the  whole  solution,  enabling  rapid  commissioning  with  the 
Enphase® Installer App, consumption monitoring with Enphase IQ™ Gateway with IQ™ Combiner+, Enphase® App, 
a  cloud-based  energy  management  platform  and  our  IQ™  Battery.  System  owners  can  use  the  Enphase App  to 
monitor their home’s solar generation, energy storage and consumption from any web-enabled device. Unlike some 
of  our  competitors,  who  utilize  a  traditional  inverter  or  offer  separate  components  of  solutions,  we  have  built-in 
system redundancy in both PV generation and energy storage, eliminating the risk that comes with a single-point of 
failure. Further, the nature of our cloud-based, monitored system allows for remote firmware and software updates, 
that allows cost-effective remote maintenance and ongoing utility compliance.

Enphase Energy, Inc. | 2022 Form 10-K | 7

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The solar industry is transitioning from solar only systems to complete energy management solutions, which 
consist  of  solar,  batteries,  load  control,  electrical  vehicle  (“EV”)  charging,  compatibility  with  third-party  generators, 
and grid services. This transition has contributed to the rising global interest in the full electrification of homes and 
businesses through renewable sources of energy.

Our Strategy

Our  objective  is  to  build  best-in-class  home  energy  systems  and  deliver  them  to  homeowners  through  our 
installer  and  distribution  partners,  enabled  by  a  comprehensive  digital  platform.  Key  elements  of  our  strategy 
include:

•

Best-in-class  customer  experience.  Our  value  proposition  is  to  deliver  products  that  are  productive, 
reliable,  smart,  simple  and  safe,  with  superior  customer  service,  to  enable  homeowners’  storage  and 
energy independence. On the service front, our installer, distributor and module partners are our first line 
of  association  with  our  ultimate  customer,  the  homeowner  and  business  user.  Our  goals  are  to  partner 
better  with  these  service  providers  so  that  we  can  provide  exceptional,  high  quality  service  to  our 
homeowners. We are convinced that continued reinforcement of customer experience improvements by 
providing 24x7 support can be a competitive advantage for us.

• Grow  market  share  worldwide.  We  intend  to  capitalize  on  our  market  leadership  in  the  microinverter 
category and our momentum with installers and homeowners to expand our market share position in our 
core markets. In addition, we intend to further increase our market share in the Europe, Asia Pacific and 
Latin America regions. Further, we intend to expand into new markets, including emerging markets, with 
new and existing products and local go-to-market capabilities.

•

•

•

•

Expand our product offerings. We distinguish ourselves from other inverter companies with our systems-
based and high technology approach, as we continue to invest in research and development to develop 
all  components  of  our  home  energy  management  systems  and  remain  committed  to  providing  our 
customers and partners with best-in-class power electronics, storage solutions, communications and load 
control, all managed by a cloud-based home energy management system.

Increase power and efficiency and reduce cost per watt. Our engineering team is focused on continuing to 
increase average power conversion efficiency and alternating current (“AC”) output power in order to pair 
with higher rated direct current (“DC”) modules while reducing costs per watt.

Increase storage energy density and reduce installation time and cost per kWh. Our engineering team is 
focused  on  increasing  the  energy  density  of  our  battery  capacity,  quality  and  reducing  installation  time 
and cost per kWh to make solar-plus-storage resilient, sustainable and affordable for the masses.

Focus  on  the  homeowner  and  installer  partners.  We  are  focused  on  making  it  easier  for  installers  and 
customers to do business and generating revenue through digitalization of the business-to-business and 
business-to-customer process of the installer and customer journey. Our key focus is to expand our digital 
presence  through  enhancing  our  array  of  tools  on  our  digital  platform  to  keep  us  continually  connected 
with our installers and homeowners, as well as increasing the use of the online store significantly.

Our Products

The Enphase Energy System, powered by IQ® Microinverters, IQ Batteries and other products and services, 
is an integrated solar, storage and energy management offering that enables self-consumption and delivers our core 
value  proposition  of  yielding  more  energy,  simplifying  design  and  installation  and  improving  system  uptime  and 
reliability. 

IQ Microinverters. The Enphase IQ7™ microinverter and Enphase IQ7+™ microinverter, part of our seventh-
generation  IQ  product  family,  support  high-powered  60-cell  and  72-cell  solar  modules  and  integrate  with  AC 
modules.  Our  IQ7X™  microinverter  addresses  96-cell  PV  modules  up  to  400W  DC  and,  with  its  97.5%  California 
Energy  Commission  efficiency  rating,  is  ideal  for  integration  into  high  power  modules.  The  IQ  family  of 
microinverters,  like  all  of  our  previous  microinverters,  is  fully  compliant  with  NEC  2014  and  2017  rapid  shutdown 
requirements. Unlike string inverters, this capability is built-in, with no additional equipment necessary.

During  2020,  we  started  shipping  our  IQ7A™  microinverter  for  high-power  monofacial  and  bifacial  solar 
modules to customers in Australia and Europe. IQ7A microinverters, which we began shipping to customers in North 
America  in  November  2019,  support  up  to  450W  high-power  modules,  targeting  high-power  residential  and 

Enphase Energy, Inc. | 2022 Form 10-K | 8

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commercial applications. Our customers will be able to pair the IQ7A microinverter with monofacial or bifacial solar 
modules, up to 450W DC, from solar module manufacturers who are expected to introduce high-power variants of 
their products in the next three years.

We  began  shipping  our  Enphase  Energy  System  with  IQ8™  microinverters  in  the  fourth  quarter  of  2021  to 
customers  in  North America,  and  in  the  fourth  quarter  of  2022  to  customers  in  France  and  the  Netherlands.  Our 
investment  in  custom  application  specific  integrated  circuit  chips  has  resulted  in  a  software-defined  microinverter 
smart enough to form a microgrid. Many homeowners often assume that their solar systems will function if the sun 
is  shining,  even  during  a  power  outage.  This  has  unfortunately  not  been  true  until  the  introduction  of  IQ8,  which 
allows homeowners to realize the true promise of solar, to make and use their own power. IQ8 solar microinverters 
can provide Sunlight Backup™ during an outage, even without a battery.

In the second quarter of 2022, the Enphase IQ8 microinverter-based system was the first in the world to be 
certified  by  UL,  a  global  safety  science  leader,  to  UL  1741,  3rd  edition  including  the  Supplement  SB.  This 
certification meets the new North American safety and grid interconnection standards for connecting solar inverters, 
energy storage systems and distributed energy resources to the grid in compliance with IEEE 1547-2018 and IEEE 
1547-1 2020.

AC  Module  (“ACM”)  products  are  integrated  systems  that  allow  installers  to  be  more  competitive  through 
improved logistics, reduced installation times, faster inspection and training. We continue to make steady progress 
with our ACM partners, including SunPower Corporation and Maxeon Solar Technologies, Ltd.

IQ Batteries. Our Enphase IQ Battery storage systems, with usable and scalable capacity of 10.1 kWh and 
3.4  kWh,  are  based  on  our  Ensemble  OS™  energy  system,  which  powers  the  world’s  first  grid-independent 
microinverter-based storage system to customers in North America and has been shipping since the second quarter 
of  2020. The  Enphase  IQ  Battery  storage  systems  feature  our  embedded  grid-forming  microinverters  that  enable 
the Always-On capability that keeps homes powered when the grid goes down and the ability to save money when 
the  grid  is  up. These  systems  are  now  compatible  with  both  new  and  existing  Enphase  IQ  solar  systems  with  M-
series™,  IQ6™  and  IQ7  microinverters.  In  January  2021,  we  announced  expanded  compatibility  of  the  Enphase 
Energy  System  with  our  M-series  microinverters  and  string  inverters.  The  expanded  compatibility  provides 
approximately  300,000  additional  Enphase  system  owners  with  the  possibility  of  achieving  grid-agnostic  energy 
resilience through the Enphase Upgrade Program. The program provides solar installers the opportunity to renew 
engagements  with  the  installed  base  of  Enphase  system  owners  through  microinverter,  solar  and  energy  storage 
upgrades  and  reflects  our  continued  commitment  to  reliability,  service  and  long-term  customer  relationships.  We 
currently  ship  our  Enphase  IQ  Battery  storage  systems  to  customers  in  North  America,  Belgium  and  German. 
Enphase IQ Batteries in Belgium and Germany can be installed with both single-phase and three-phase third-party 
solar energy inverters, enabling homeowners to upgrade their existing home solar systems with a residential battery 
storage solution that reduces costs while providing increased self-reliance.

During  the  second  quarter  of  2021,  we  introduced  our  IQ™  Load  Controller  for  our  Enphase  IQ  Battery 
storage systems. Load control allows homeowners to decide what gets power in their home in the event of a grid 
outage,  with  the  ability  to  choose  up  to  four  loads.  These  loads  will  be  on  when  the  grid  is  present  and  shed 
automatically in the event of a grid failure. This product makes installation simpler and saves time for installers.

Our Enphase Energy System integrates with most leading models of home standby AC generators, providing 
enhanced  performance  and  a  glitch-free  transition  for  homeowners  during  power  outages.  Homeowners  can  also 
monitor real-time power flow, start and stop their generator remotely, set quiet hours to prevent their generator from 
operating  until  their  batteries  fall  below  a  designated  threshold,  and  control  it  all  with  the  Enphase App. The  new 
feature functions without a generator automatic transfer switch and is designed to eliminate the power glitches that 
reset home electronic appliances when switching to generator power.

Our  home  energy  systems  are  architected  to  efficiently  manage  generation,  storage  and  consumption 
resources  in  the  home  to  ensure  the  best  customer  experience.  During  2022,  we  announced  that  Enphase  IQ 
Batteries  officially  support  the  most  common  third-party  solar  energy  string  inverters  in  Belgium  and  Germany, 
helping meet the increasing demand for energy independence in the region.

In October 2022, we acquired GreenCom Networks AG (“GreenCom”), which allows us to provide Internet of 
Things software (IoT) solutions for customers to connect and manage a wide range of distributed energy devices 
within the home. This acquisition allows us to add a local engineering team in France and Germany to service the 
accelerating clean energy transition in Europe, provide installers with a complete home energy management system 

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integrating  Enphase  microinverters  and  batteries  with  third-party  EV  chargers  and  heat  pumps,  and  enable 
homeowners to monitor and control their devices from the Enphase App.

Electric Vehicle Chargers. In December 2021, we acquired ClipperCreek, Inc. (“ClipperCreek”), which allows 
us  to  offer  EV  charging  solutions  for  residential  and  commercial  customers  in  the  United  States.  The  increasing 
penetration  of  EVs  has  implications  for  home  energy  management,  as  households  not  only  consume  significantly 
more power with an EV, but also have a large battery that can be used for both backup and grid service. Our EV 
chargers are compatible with most EVs sold in North America.

Grid Services. We participate in the ConnectedSolutions program, which is an incentive program implemented 
by  two  utilities  in  the  Northeast  region  of  the  United  States  to  reduce  electrical  demand  during  high-use  periods. 
Enphase  storage  customers  in  Connecticut,  Massachusetts,  and  Rhode  Island  can  sign-up,  monitor,  track  money 
earned and control participation in the program using the Enphase App. We announced during the third quarter of 
2021  our  participation  in  Hawaiian  Electric’s  Battery  Bonus  grid  services  program.  This  program  offers  a  new 
incentive for homeowners on the island of Oahu to install a new home battery. During the fourth quarter of 2021, we 
announced  our  participation  in  the Arizona  Public  Service  (“APS”)  residential  battery  services  program.  The APS 
program offers homeowners who install Enphase IQ Batteries in its service territory the chance to participate and 
earn money through one-time, upfront incentives. In addition, we announced during the first quarter of 2022 that the 
Vermont-based  utility  Green  Mountain  Power  (“GMP”)  will  offer  Enphase  Energy  Systems  to  its  customers  in  a 
cutting-edge  battery  lease  grid  services  pilot  program.  Homeowners  can  also  enroll  in  GMP’s  “Bring  Your  Own 
Device” grid services program, which allows customers with their own Enphase Energy Systems to participate and 
earn an up-front incentive. These grid services programs enable utilities to leverage the IQ Battery instead of turning 
on polluting peaker plants, while generating an income stream for the IQ Battery owner. Although these programs 
do not currently drive material revenues, we believe that facilitating grid services participation for our customers can 
reduce the lifetime cost of IQ Batteries and help drive increased demand for our Enphase Energy Systems.

In December 2022, Pacific Gas & Electric Company (“PG&E”) and Enphase announced the launch of a fixed 
power solutions pilot program, Residential Storage Initiative, in which PG&E is providing free Enphase IQ Battery 
storage  systems  to  approximately  100  low-income  residential  customers  that  have  been  the  most  frequently 
impacted  by  outages  as  a  result  of  PG&E’s  Enhanced  Powerline  Safety  Settings.  Customers  participating  in  the 
pilot  will  be  auto  enrolled  in  the  PG&E  Power  Saver  Rewards  program,  where  they  can  earn  money  and  help 
California  avoid  power  interruptions  by  reducing  consumption  and  utilizing  energy  stored  in  their  battery  systems 
during times of high demand.

Enphase Installer Platform. In January 2021, we acquired Sofdesk Inc. (“Sofdesk”), which allows us to provide 
design and proposal software. In March 2021, we acquired the solar design services business of DIN Engineering 
Services  LLP  (“DIN”),  which  allows  us  to  provide  proposal  and  permitting  services,  and  which  focuses  on 
automating the creation of permit plan sets to further expand the installer base.

In December 2021, we acquired 365 Pronto, Inc (“365 Pronto”), which allows us to offer a predictive software 
platform  dedicated  to  simplifying  the  cleantech  service  landscape  by  matching  cleantech  asset  owners  to  a  local 
and  on-demand  workforce  of  service  providers. 
In  March  2022,  we  acquired  SolarLeadFactory,  LLC 
(“SolarLeadFactory”),  which  allows  us  to  provide  high  quality  leads  to  solar  installers,  with  the  objective  of 
increasing lead volumes and conversion rates to help drive down the customer acquisition costs for installers.

Customers and Sales

We currently offer solutions targeting the residential and commercial markets in the United States, Canada, 
Mexico,  Europe,  Australia,  New  Zealand,  India,  Brazil,  the  Philippines,  Thailand,  South  Africa  and  certain  other 
Central American and Asian markets. We sell primarily to solar distributors who combine our products with others, 
including solar modules products and racking systems, and resell to installers in each target region. In addition to 
our  solar  distributors,  we  sell  directly  to  select  large  installers,  original  equipment  manufacturers  (“OEM”)  and 
strategic partners. Our OEM customers include solar module manufacturers who integrate our microinverters with 
their solar module products and resell to both distributors and installers. Strategic collaborators include a variety of 
companies, including industrial equipment suppliers and providers of solar financing solutions. We also sell certain 
products  and  services  to  homeowners,  primarily  in  support  of  our  warranty  services  and  legacy  product  upgrade 
programs, via our online store. In the year ended December 31, 2022, 2021 and 2020, one customer accounted for 
approximately  37%,  34%  and  29%,  respectively,  of  total  net  revenues.  The  revenues  generated  from  the  United 
States  market  have  represented  76%,  80%  and  82%  of  our  total  revenue  for  the  annual  period  ending  on 
December 31, 2022, 2021 and 2020, respectively.

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Competition

The  markets  for  our  products  are  highly  competitive  and  we  compete  with  central  and  string  inverter 
manufacturers, storage system manufacturers, and new technologies that compete with our business. The principal 
areas in which we compete with other companies include:

• product performance and features;

• total cost of ownership;

• breadth of product line;

• local sales and distribution capabilities;

• module compatibility and interoperability;

• reliability and duration of product warranty;

• technological expertise;

• brand recognition;

• customer service and support;

• compliance with industry standards and certifications;

• compliance with current and planned local electrical codes;

• integration with storage offerings;

• size and financial stability of operations;

• size of installed base; and

• local manufacturing and product content.

In  an  installation  consisting  of  a  traditional  central  inverter,  the  solar  PV  modules  are  connected  in  series 
strings. In a large installation, there are multiple series strings connected in parallel. The aggregated voltage from 
each  of  these  strings  is  then  fed  into  a  large  central  inverter.  We  believe  that  traditional  string  inverters  have  a 
number of design and performance challenges limiting innovation and their ability to reduce the cost of solar power 
systems, including the following:

•

•

•

•

Productivity  limits.  If  solar  modules  are  wired  using  a  traditional  central  inverter—group  or  “string”  of 
modules are wired in series, and an entire string’s output is limited by the output of the lowest-performing 
module. Because of its string design, there is a single point of failure risk with the traditional string inverter 
approach.

Reliability issues. Traditional string inverters are the single most common component of solar installations to 
fail, resulting in system downtime and adversely impacting total energy output. As a result, string inverters 
typically carry warranties of only 5 to 10 years.

Complex  design  and  installation  requirements.  The  string  inverter-based  solar  PV  installation  requires 
greater  effort  on  the  part  of  the  installer,  both  in  terms  of  design  and  on-site  labor.  String  inverter 
installations  require  string  design  and  calculations  for  safe  and  reliable  operation,  as  well  as  specialized 
equipment such as direct current (“DC”) combiners, conduits and disconnects. In addition, the use of high-
voltage  DC  requires  specialized  knowledge  and  training  and  safety  precautions  to  install  string  inverter 
technology.

Safety  issues.  String  inverter  solar  PV  installations  have  a  wide  distribution  of  high-voltage  (600  volts  to 
1,000 volts) DC wiring. If damaged, DC wires can generate sustained electrical arcs, reaching temperatures 
of more than 5,000 °F. This creates the risk of fire for solar PV installation owners and injury for installers 
and maintenance personnel.

These  challenges  of  traditional  string  inverters  have  a  direct  impact  on  the  cost  and  expected  return  on 

investment of solar installations to both installers and system owners:

•

Installer. Solar PV installers aim for simple installation design, fast installation times and maximum system 
performance  and  predictability.  The  installation  of  high-voltage  DC  string  inverter  technology,  however, 

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requires  significant  preparation,  precautionary  safety  measures,  time-consuming  string  calculations, 
extensive design expertise and specialized installation equipment, training and knowledge. Together, these 
factors significantly increase complexity and cost of installation and limit overall productivity for the installer.

•

System owner. Solar power system owners aim for high energy production, low cost, high reliability, and low 
maintenance requirements, as well as reduced fire risks. With traditional string inverters, owners often are 
unable to optimize the size or shape of their solar PV installations due to string design limitations. As such, 
they experience performance loss from shading and other obstructions, can face frequent system failures 
and  lack  the  ability  to  effectively  monitor  the  performance  of  their  solar  PV  installation.  In  addition,  string 
inverter installations operate at high-voltage DC, which bears significant fire risks. Further, due to their large 
size, string inverter installations can affect architectural aesthetics of the house or commercial building.

Several  of  our  existing  and  potential  competitors  are  significantly  larger  than  us  and  may  have  greater 
financial,  marketing,  distribution  and  customer  support  resources  and  may  have  significantly  broader  brand 
recognition, especially in certain markets. In addition, some of our competitors have more resources and experience 
in developing or acquiring new products and technologies and in creating market awareness for these offerings.

Competitors in the inverter market include, among others, SolarEdge Technologies, Inc., Fronius International 
GmbH, SMA Solar Technology AG, AP Systems, Generac Holdings Inc., Tesla, Inc., Huawei Technologies Co. Ltd., 
Delta,  Ginglong,  Sungrow,  Solax,  Hoymiles  and  other  companies  offering  microinverters  and  string  inverters  with 
and  without  solar  optimizers.  We  believe  that  our  microinverter  solutions  offer  significant  advantages  and 
competitive  differentiation  relative  to  traditional  central  or  string  inverter  technology,  even  when  supplemented  by 
DC-to-DC optimizers on the roof. 

Competitors in the storage market include Tesla, SolarEdge, LG Chem, Sonnen, Generac, Panasonic, BYD, 
E3/DC,  Senec,  Schneider,  Briggs  &  Stratton  and  other  producers  of  battery  cells  and  integrated  storage  systems 
market. Competitors in the EV charger market include Wallbox, ChargePoint, Tesla, JuiceBox and EVBox, among 
others.

Manufacturing, Quality Control and Supply Chain Management

We utilize a sourcing strategy that emphasizes global procurement of materials and product manufacturing in 
lower cost regions. We outsource the manufacturing of our products to third-party contract manufacturers. Flex Ltd. 
and  affiliates  (“Flex”),  Salcomp  Manufacturing  India  Pvt.  Ltd.  (“Salcomp”)  and  Sunwoda  Electric  Co.  Ltd. 
(“Sunwoda”) assemble and test our microinverters, IQ Battery storage systems and IQ Gateway products. Prices for 
such  services  are  agreed  to  by  the  parties  on  a  quarterly  basis,  and  we  are  obligated  to  purchase  manufactured 
products and raw materials that cannot be resold upon the termination of the corresponding agreement. Flex also 
provides  receiving,  kitting,  storage,  transportation,  inventory  visibility  and  other  value-added  logistics  services  at 
locations managed by Flex. Hong Kong Sinbon Industrial Limited manufactures our custom AC cables. During the 
fourth quarter of 2020, we qualified Amperex Technology Limited in addition to A123 Systems LLC as our lithium-ion 
battery  suppliers  to  help  increase  our  available  capacity.  In  addition,  we  rely  on  several  unaffiliated  companies  to 
supply certain components used in the fabrication of our products.

Our relationships with Flex, Salcomp and Sunwoda provide us with strategic manufacturing capabilities and 
flexibility.  Eighth-generation  Enphase  IQ  Microinverters  are  produced  by  Flex  in  Mexico  and  Salcomp  in  India.  In 
addition, we expect to begin microinverter production by Flex in Romania in the first quarter of 2023 to ship directly 
to customers in Europe, thereby shortening delivery times. We also plan to begin microinverter production with new 
contract  manufacturing  partners  in  the  United  States  in  2023.  We  anticipate  that  this  additional  manufacturing 
capacity in Romania and United States could help us better serve our customers by cutting down delivery times and 
diversifying  our  supply  chain,  as  well  as  mitigate  tariffs  that  apply  from  products  sourced  from  countries  such  as 
China.

In  the  first  quarter  of  2023,  we  will  begin  production  shipments  of  Enphase  branded  EV  chargers  at  our 
existing  contract  manufacturing  facility  in  Mexico.  We  expect  this  move  could  help  to  meet  the  rapidly  growing 
demand  for  reliable  and  affordable  EV  charging  solutions  by  providing  a  greater  supply  of  product  and  more 
predictable lead times.

For a further discussion of actions taken to manage through the ongoing global supply chain constraints, see 

Part II, Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations—Global 
Events Affecting our Business and Operations of this Annual Report on Form 10-K.

Enphase Energy, Inc. | 2022 Form 10-K | 12

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Customer Service

We  continue  to  cultivate  an  organizational  focus  on  customer  satisfaction  and  are  committed  to  providing  a 
best-in-class customer experience. We maintain high levels of customer engagement through our customer support 
group and the Enphase App. We have introduced the Enphase Community, a place for homeowners and installers 
to  ask  questions  or  provide  feedback  about  our  products  and  services,  discuss  products  and  services  with  other 
Enphase  users  and  enthusiasts,  provide  tips  for  using  our  products  and  services  to  the  community,  and  get  help 
from homeowners and installers to solve their problems quickly. We significantly improved features in Service-on-
the-Go™, which installers can use from their mobile devices to get service instantly. We continue to provide 24/7 
support for installers and Enphase system owners globally across its phone, online chat and email communications 
channel. We continue to hire and train our customer service agents with a goal of reducing average customer wait 
times to under one minute, and we continue to expand our field service technicians hiring in United States, Europe 
and Australia to provide direct homeowner assistance. The emphasis on superior customer experience has further 
increased  due  to  severe  weather  events.  Our  Net  Promoter  Score  (commonly  referred  to  as  “NPS”)  improved  to 
69% in 2022 from 67% in 2021 through multiple customer service initiatives.

Research and Development

We  plan  to  continue  to  devote  substantial  resources  to  research  and  development  with  the  objective  of 
developing  new  products  and  systems  and  increasing  the  value  or  reducing  the  cost  of  existing  products  and 
systems. Our research and development roadmap identifies new product features and defines improvement targets 
for existing products that enhance the benefit of our energy management solutions to our customers and support 
our  growth  plans.  We  measure  the  effectiveness  of  our  research  and  development  using  metrics  that  include 
product  cost,  performance  and  reliability,  homeowner  and  installer  experience,  as  well  as  timeliness  of  the  new 
developments.

Intellectual Property

We  operate  in  an  industry  in  which  innovation,  investment  in  new  ideas  and  protection  of  our  intellectual 
property  rights  are  critical  for  success.  We  protect  our  technology  through  a  variety  of  means,  including  through 
patent,  trademark,  copyright  and  trade  secrets  laws  in  the  U.S.  and  similar  laws  in  other  countries,  confidentiality 
agreements and other contractual arrangements. As of December 31, 2022, we had approximately 268 issued U.S. 
patents, 101 issued foreign patents, 69 pending U.S. patent applications and 118 pending foreign counterpart patent 
applications. Our issued patents are scheduled to expire between years 2023 and 2046. 

We  have  licensed  certain  technologies  for  application  in  hardware  and  software  in  our  products.  Such 
licenses are generally fully-paid, royalty-free licenses. Given the volume and pace of new patents worldwide, it may 
become necessary in the future to license intellectual property on terms that are yet unknown to us, and that may be 
less favorable than licenses in the past. In addition, we license open source software from various third parties for 
use  in  hardware  and  software.  Such  open  source  software  is  licensed  under  open  source  licenses,  and  we  take 
efforts to maintain compliance with such licenses.

We  continually  assess  the  need  for  patent  protection  for  those  aspects  of  our  technology  that  we  believe 
provide significant competitive advantages. A majority of our patents relate to DC to AC power conversion, energy 
storage devices and related energy environments.

With  respect  to  proprietary  know-how  that  is  not  patentable  and  processes  for  which  patents  are  difficult  to 
enforce,  we  rely  on  trade  secret  protection  and  confidentiality  agreements  to  safeguard  our  interests.  We  believe 
that  many  elements  of  our  microinverter  and  storage  manufacturing  processes  involve  proprietary  know-how, 
technology  or  data  that  are  not  covered  by  patents  or  patent  applications,  including  technical  processes,  test 
equipment designs, algorithms and procedures.

We own or have rights to various trademarks and service marks in the United States and in other countries, 
including Enphase, the Enphase “e”, IQ, Ensemble OS, Encharge, IQ Gateway, Enpower and Enlighten. We rely on 
both registration of our marks as well as common law protection where available.

All of our research and development personnel have entered into confidentiality and proprietary  information 
agreements  with  us.  These  agreements  address  intellectual  property  protection  and  require  our  employees  to 
assign to us all of the inventions, designs and technologies they develop during the course of employment with us.

We  also  require  our  customers  and  business  partners  to  enter  into  confidentiality  agreements  before  we 

disclose any sensitive aspects of our technology or business plans.

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As part of our overall strategy to protect our intellectual property, we may take legal actions to prevent third 
parties  from  infringing  or  misappropriating  our  intellectual  property  or  from  otherwise  gaining  access  to  our 
technology.

Government Regulations

Our business activities are subject to a changing patchwork of laws and regulations that prevail at the federal, 
state, regional and local level as well as in those foreign jurisdictions. For example, substantially all of our import 
operations  are  subject  to  complex  trade  and  customs  laws,  regulations  and  tax  requirements  such  as  sanctions 
orders  or  tariffs  set  by  governments  through  mutual  agreements  or  unilateral  actions.  In  addition,  the  countries  in 
which  our  products  are  manufactured  or  imported  may  from  time  to  time  impose  additional  duties,  tariffs  or  other 
restrictions on our imports or adversely modify existing restrictions. Changes in tax policy or trade regulations, the 
disallowance  of  tax  deductions  on  imported  merchandise,  or  the  imposition  of  new  tariffs  on  imported  products, 
could  have  an  adverse  effect  on  our  business  and  results  of  operations.  Compliance  with  these  laws,  rules  and 
regulations has not had, and is not expected to have, a material effect on our capital expenditures and results of 
operations.

We  are  also  subject  to  other  complex  foreign  and  U.S.  laws  and  regulations  related  to  anti-bribery  and 
corruption  laws,  antitrust  or  competition  laws  and  data  privacy  laws,  such  as  the  EU  General  Data  Protection 
Regulation, among others. We have policies and procedures in place to promote compliance with these laws and 
regulations.  To  date,  our  compliance  actions  and  costs  relating  to  these  laws,  rules  and  regulations  have  not 
resulted  in  a  material  cost  or  effect  on  our  capital  expenditures,  earnings  or  competitive  position.  Government 
regulations are subject to change, and accordingly we are unable to assess the possible effect of compliance with 
future  requirements  or  whether  our  compliance  with  such  regulations  will  materially  impact  our  business  in  the 
future.

In February 2022, armed conflict escalated between Russia and Ukraine. The United States and certain other 
countries  have  imposed  sanctions  on  Russia  and  could  impose  further  sanctions,  which  could  further  damage  or 
disrupt  international  commerce  and  the  global  economy.  While  we  do  not  have  sales  or  operations  in  Russia  or 
Ukraine, it is possible that the conflict or actions taken in response, could adversely affect some of our markets and 
suppliers,  the  broader  economic  and  financial  markets,  or  costs  and  availability  of  components  and  materials,  or 
cause further supply chain disruptions.

Government Incentives

U.S. federal, state and local government bodies, as well as non-U.S. government bodies provide incentives to 
owners, distributors, system integrators and manufacturers of solar energy systems to promote solar energy in the 
form of rebates, tax credits, lower VAT rate and other financial incentives, such as system performance payments, 
payments for renewable energy credits associated with renewable energy generation and exclusion of solar energy 
systems  from  property  tax  assessments.  The  market  for  on-grid  applications,  where  solar  power  is  used  to 
supplement a customer’s electricity purchased from the utility network or sold to a utility under tariff, often depends 
in  large  part  on  the  availability  and  size  of  these  government  subsidies  and  economic  incentives,  which  vary  by 
geographic  market  and  from  time  to  time,  thus  helping  to  catalyze  customer  acceptance  of  solar  energy  as  an 
alternative to utility-provided power. The disallowance or changes in government subsidies or economic incentives 
could  have  an  adverse  effect  on  our  business  and  results  of  operations.  Among  other  government-established 
incentives, net metering and related policies have supported the growth of on-grid solar products, and changes to 
such policies may significantly reduce demand for electricity from our solar service offerings. Net metering provides 
for the compensation of a customer’s excess solar generation to the electrical grid.

In August 2022, the IRA was enacted, which includes extension of the investment tax credit (“ITC”) as well as 
a  new  advanced  manufacturing  production  tax  credit  (“AMPTC”),  to  incentivize  clean  energy  component  sourcing 
and production, including for the production of solar related components, battery cells and battery packs. The IRA 
provides  for  an  AMPTC  on  microinverters  of  11  cents  per  alternating  current  watt  basis.  The  AMPTC  for  each 
component  including  on  microinverters  decreases  by  25%  each  year  beginning  in  2030  and  ending  after  2032. 
Under  the  IRA,  the  ITC  was  extended  until  2032  to  allow  a  qualifying  homeowner  to  deduct  30%  of  the  cost  of 
installing residential solar systems from their U.S. federal income taxes, thereby returning a material portion of the 
purchase price of the residential solar system to homeowners. Under the terms of the current extension, the ITC will 
remain  at  30%  through  the  end  of  2032,  reduce  to  26%  for  2033,  reduce  to  22%  for  2034  and  further  reduce  to 
0.0%  after  the  end  of  2034  for  residential  solar  systems,  unless  it  is  extended  before  that  time.  We  believe  the 
enactment  of  the  IRA  is  favorable  to  our  overall  business  worldwide;  however,  we  are  continuing  to  evaluate  the 

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overall impact and applicability of the IRA to our results of operations going forward, including the revisions to the 
U.S.  Internal  Revenue  Code,  which  includes  a  15%  corporate  minimum  income  tax  and  a  1%  excise  tax  on 
corporate stock repurchases in tax years beginning after December 31, 2022.

In December 2022, the California’s Public Utilities Commission (“CPUC”) approved and voted for a new net 
metering policy, called Net Energy Metering 3.0 (“NEM 3.0”), which will be in effect starting April 15, 2023. The new 
policy  reduces  the  compensation  earned  by  solar  customers  selling  extra  energy  to  the  grid  by  a  substantial 
amount.  The  average  export  rate  in  California  is  expected  to  be  approximately  $0.05/kWh  to  $0.08/kWh  when 
effected compared to current average of $0.25/kWh to $0.35/kWh. NEM 3.0 in California may reduce demand for 
solar PV systems, including our future inverter sales.

Seasonality

Historically,  the  majority  of  our  revenues  are  from  the  North  American  and  European  regions  which 
experience higher sales of our products in the second, third and fourth quarters and have been affected by seasonal 
customer demand trends, including weather patterns and construction cycles. The first quarter historically has had 
softer customer demand in our industry, due to these same factors. Although these seasonal factors are common in 
the  solar  sector,  historical  patterns  should  not  be  considered  a  reliable  indicator  of  our  future  sales  activity  or 
performance. 

Environment and Climate Change

We  have  understood  the  climate  change  threat  from  the  beginning  and  have  been  creating  clean  energy 
technologies  needed  to  directly  combat  it,  protect  our  environment  and  enable  sustainable  development.  We 
recognize our ability to do so rests on our capacity to understand, anticipate and successfully navigate various types 
of  climate  risk.  Our  strategy  is  advancing  solutions  to  meet  any  number  of  climate  risk  mitigation  opportunities  – 
solar  energy  equipment,  battery  storage,  EV  charging,  smart  load  management  and  integration  with  grid 
modernization efforts.

We  align  our  risk  assessment  and  climate  strategy  with  the  recommendations  of  the Taskforce  for  Climate-
Related  Financial  Disclosures  (“TCFD”)  and  emerging  climate-risk  disclosure  recommendations  from  the 
International Financial Reporting Standards foundation. We issued our second TCFD aligned Environmental, Social 
and Governance Report in 2022 and plan to follow up with another aligned report in 2023.

We believe that sound corporate governance is critical to helping us achieve our goals, including with respect 
to designing products that address both energy generation and consumption. We continue to evolve a governance 
framework  that  exercises  appropriate  oversight  of  responsibilities  at  all  levels  throughout  the  company  and 
manages its affairs consistent with high principles of business ethics and advancing a sustainable future for all. 

Human Capital Resources

As of December 31, 2022, we had 2,821 full-time employees. Of the full-time employees, 952 were engaged 
in  research  and  development,  1,169  in  sales  and  marketing,  239  in  general  and  administration,  316  in  design 
permitting services and 145 in manufacturing and operations. Of these employees, 1,002 were in the United States, 
1,424 in India, 107 in New Zealand, 161 in Europe, 43 in Canada, 26 in Australia, 25 in China, 23 in Mexico and 10 
in Brazil.

None of our employees are represented by a labor union; however, our employees in France are represented 
by a collective bargaining agreement. We have not experienced any employment-related work stoppages, and we 
consider our relations with our employees to be good.

Culture

Supporting our purpose of “Advancing a sustainable future for all,” all employees are expected to uphold the 

following core values that drive our culture:

•

•

•

•

Customer First

Integrity

Innovation

Teamwork

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• Quality

These core values are represented by how we work together, how we perform and how we all get rewarded. 

Values are reinforced in new hire training, culture workshops and everyday interactions. 

Talent

Our talent and culture are critical to our success. Our human capital management philosophy and objectives 
focus  on  creating  a  high-performance  culture  in  which  our  employees  deliver,  succeed  and  lead.  We  achieve  our 
objectives  through  various  employee  engagement  and  talent  development  efforts.  Our  employee  engagement 
efforts  include  our  quarterly  all-employee  town  hall  meetings,  through  which  we  aim  to  keep  our  employees  well-
informed and to increase transparency, and employee engagement surveys, through which we incorporate critical 
employee  feedback  into  our  culture,  operations  and  strategic  plans.  We  have  established  relationships  with  top 
universities worldwide, professional associations and industry groups to build a talent pipeline and established the 
Enphase Learning Academy to provide employees with on demand relevant technical and professional programs.

We are committed to promoting and cultivating an inclusive and diverse culture that welcomes and celebrates 
everyone  without  bias.  In  addition,  we  look  to  actively  engage  within  our  communities  to  foster  and  attain  social 
equity.  We  became  a  corporate  sponsor  of  the  non-profit  Women  in  Cleantech  and  Sustainability  and  our  Chief 
Executive Officer signed the CEO Action for Diversity & Inclusion pledge. This shows our commitment to advancing 
diversity and inclusion in the workplace.

Compensation Philosophy

Our  compensation  philosophy  creates  the  framework  for  our  rewards  strategy.  We  have  a  pay-for-
performance  culture  that  ties  compensation  to  the  performance  of  the  individual  and  our  company.  We  provide 
competitive compensation programs that focus on the following five key elements:

•

•

•

•

•

Pay-for-performance:  Reward  and  recognize  leading  contributors  and  high  potential  employees  by  paying 
market competitive total direct compensation, which includes base salary, quarterly bonus or commission, 
and stock-based compensation;

External  market-based  research:  Pay  levels  that  are  competitive  with  respect  to  the  labor  markets  and 
industries in which we compete for talent;

Internal equity: Maintaining internally consistent and non-discriminatory pay and pay practices;

Fiscal  responsibility:  Providing  programs  in  line  with  economic  conditions  and  our  company’s  financial 
health; and

Legal  compliance:  Ensure  the  organization  is  legally  compliant  with  employee  compensation  laws  in  all 
states and countries in which we operate.

Health and Wellness

We  invest  in  our  employees  through  high-quality  benefits  and  various  health  and  wellness  initiatives.  Our 
benefits  packages  provide  a  balance  of  protection  along  with  the  flexibility  to  meet  the  individual  needs  of  our 
employees. Our global work-from-home policy introduced in response to COVID-19 pandemic is still in effect, but 
modified to allow employees in certain countries and locations to work in a hybrid mode as business necessitate. 
We  are  conducting  business  as  usual  with  no  major  restrictions  to  employee  travel  unless  mandated  by  laws  in 
different  countries.  We  expect  these  business  operating  conditions  will  substantially  remain  in  effect  throughout 
2023. We will continue to actively monitor the situation and we will make further changes to our business operations 
as  may  be  permitted  by  federal,  state,  or  local  authorities  and  that  we  determine  are  in  the  best  interests  of  our 
employees, end-customers, partners, suppliers and stockholders. Our focus remains on the safety of our employees 
and business partners, and we strive to protect the health and well-being of the communities in which we operate, in 
part,  by  providing  technology  to  our  employees,  end-customers  and  business  partners  to  help  them  do  their  best 
work while remote. 

Available Information

We  file  electronically  with  the  U.S.  Securities  and  Exchange  Commission  (“SEC”),  our  Annual  Reports  on 
Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed 
pursuant  to  Section  13(a)  or  15(d)  of  the  Exchange  Act  can  be  accessed  on  our  Investor  Relations  website  at 
www.investor.enphase.com. Alternatively, you may access these reports at the SEC’s website at www.sec.gov. We 

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make available, free of charge, copies of these reports as soon as reasonably practicable after filing these reports 
with the SEC or otherwise furnishing it to the SEC. The contents of our websites are not incorporated by reference 
into this Annual Report on Form 10-K or in any other report or document we file with the SEC, and any references to 
our websites are intended to be inactive textual references only.

Item 1A.  Risk Factors

We  have  identified  the  following  risks  and  uncertainties  that  may  have  a  material  adverse  effect  on  our 
business,  financial  condition  or  results  of  operations.  The  risks  described  below  are  not  the  only  ones  we  face. 
Additional risks not presently known to us or that we currently believe are not material may also significantly impair 
our  business  operations.  Our  business  could  be  harmed  by  any  of  these  risks.  The  trading  price  of  our  common 
stock could decline due to any of these risks, and you may lose all or part of your investment. In assessing these 
risks,  you  should  also  refer  to  the  other  information  contained  in  this  Annual  Report  on  Form  10-K,  including  our 
consolidated financial statements and related notes. See also “Forward-Looking Statements” in the forepart of this 
Annual Report on Form 10-K.

Risks Related to our Business, Operations and Our Industry

Unfavorable macroeconomic and market conditions may adversely affect our industry, business and 
financial results.

Our business depends on the overall demand for our solar energy products and on the economic health and 
willingness of our customers and potential customers to make capital commitments to purchase our products and 
services. As a result of macroeconomic or market uncertainty, including increased interest rates and higher inflation, 
customers may decide to delay purchasing our products and services or not purchase at all. In addition, a number 
of  the  risks  associated  with  our  business,  which  are  disclosed  in  these  risk  factors,  may  increase  in  likelihood, 
magnitude or duration, and we may face new risks that we have not yet identified.

In  the  past,  unfavorable  macroeconomic  and  market  conditions  have  resulted  in  sustained  periods  of 
decreased  demand.  Macroeconomic  and  market  conditions  could  be  adversely  affected  by  a  variety  of  political, 
economic  or  other  factors  in  the  United  States  and  international  markets,  which  could,  in  turn,  adversely  affect 
spending levels of installers and end users and could create volatility or deteriorating conditions in the markets in 
which we operate. Macroeconomic uncertainty or weakness could result in:

•

•

•

•

•

reduced demand for our products as a result of constraints on capital spending for residential solar energy 
systems by our customers;
increased  price  competition  for  our  products  that  may  adversely  affect  revenue,  gross  margin  and 
profitability;
decreased  ability  to  forecast  operating  results  and  make  decisions  about  budgeting,  planning  and  future 
investments;
business  and  financial  difficulties  faced  by  our  suppliers  or  other  partners,  including  impacts  to  material 
costs,  sales,  liquidity  levels,  ability  to  continue  investing  in  their  businesses,  ability  to  import  or  export 
goods, ability to meet development commitments and manufacturing capability; and
increased overhead and production costs as a percentage of revenue.

Reductions  in  customer  spending  in  response  to  unfavorable  or  uncertain  macroeconomic  and  market 
conditions,  globally  or  in  a  particular  region  where  we  operate,  would  adversely  affect  our  business,  results  of 
operations and financial condition.

If  demand  for  solar  energy  solutions  does  not  grow  or  grows  at  a  slower  rate  than  we  anticipate,  our 
business will suffer.

Our  IQ  Microinverters, ACM  products  and  IQ  Battery  storage  systems  are  utilized  in  solar  PV  installations, 
which provide on-site distributed power generation. As a result, our future success depends on continued demand 
for solar energy solutions and the ability of solar equipment vendors to meet this demand. The solar industry is an 
evolving  industry  that  has  experienced  substantial  changes  in  recent  years,  and  we  cannot  be  certain  that 
consumers  and  businesses  will  adopt  solar  PV  systems  as  an  alternative  energy  source  at  levels  sufficient  to 
continue  to  grow  our  business.  Traditional  electricity  distribution  is  based  on  the  regulated  industry  model  under 
which businesses and consumers obtain their electricity from a government regulated utility. For alternative methods 
of distributed power to succeed, businesses and consumers must adopt new purchasing practices. The viability and 

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continued growth in demand for solar energy solutions and, in turn, our products, may be impacted by many factors 
outside of our control, including:

• market acceptance of solar PV systems based on our product platform;

•

•

•

•

•

•

•

cost competitiveness, reliability and performance of solar PV systems compared to conventional and non-
solar renewable energy sources and products; 

availability  and  amount  of  government  subsidies  and  incentives  to  support  the  development  and 
deployment of solar energy solutions;

the  extent  to  which  the  electric  power  industry  and  broader  energy  industries  are  deregulated  to  permit 
broader adoption of solar electricity generation;

the cost and availability of key raw materials and components used in the production of solar PV systems;

prices of traditional utility-provided energy sources;

levels of investment by end-users of solar energy products, which tend to decrease when economic growth 
slows; and

the emergence, continuance or success of, or increased government support for, other alternative energy 
generation technologies and products.

If demand for solar energy solutions does not grow, demand for our customers’ products as well as demand 
for our products will decrease, which would have an adverse impact on our ability to increase our revenue and grow 
our business.

Further,  our  success  depends  on  continued  demand  for  solar  energy  solutions  and  the  ability  of  solar 
equipment  vendors  to  meet  this  demand.  Supply  chain  disruptions,  increased  interest  rates  and  higher  inflation, 
have  caused  and  may  continue  to  cause  various  negative  effects,  including  an  inability  to  meet  the  needs  of  our 
existing or potential end customers. If demand for solar energy solutions decreases or does not grow, demand for 
our customers’ products as well as demand for our products will decrease, which would have an adverse impact on 
our ability to increase our revenue and grow our business.

The reduction, elimination or expiration of government subsidies and economic incentives for on-grid solar 
electricity applications could reduce demand for solar PV systems and harm our business.

The  market  for  on-grid  applications,  where  solar  power  is  used  to  supplement  a  customer’s  electricity 
purchased from the utility network or sold to a utility under tariff, depends in large part on the availability and size of 
government and economic incentives that vary by geographic market. Because our customers’ sales are typically 
into the on-grid market, the reduction, elimination or expiration of government subsidies and economic incentives for 
on-grid  solar  electricity  may  negatively  affect  the  competitiveness  of  solar  electricity  relative  to  conventional  and 
non-solar renewable sources of electricity and could harm or halt the growth of the solar electricity industry and our 
business.

In general, the cost of solar power currently exceeds retail electricity rates, and we believe this tendency will 
continue in the near term. As a result, national, state and local government bodies in many countries, including the 
United  States,  have  provided  incentives  in  the  form  of  feed-in  tariffs  (“FiTs”),  rebates,  tax  credits  and  other 
incentives to system owners, distributors, system integrators and manufacturers of solar PV systems to promote the 
use of solar electricity in on-grid applications and to reduce dependency on other forms of energy. Many of these 
government incentives expire, phase out over time, terminate upon the exhaustion of the allocated funding, require 
renewal by the applicable authority or are being changed by governments due to changing market circumstances or 
changes to national, state or local energy policy.

Electric utility companies or generators of electricity from other non-solar renewable sources of electricity may 
successfully  lobby  for  changes  in  the  relevant  legislation  in  their  markets  that  are  harmful  to  the  solar  industry. 
Reductions in, or eliminations or expirations of, governmental incentives in regions where we focus our sales efforts 
could result in decreased demand for and lower revenue from solar PV systems there, which would adversely affect 
sales of our products. In addition, our ability to successfully penetrate new geographic markets may depend on new 
countries  adopting  and  maintaining  incentives  to  promote  solar  electricity,  to  the  extent  such  incentives  are  not 
currently  in  place.  Furthermore,  electric  utility  companies  may  establish  pricing  structures  or  interconnection 

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requirements  that  could  adversely  affect  our  sales  and  be  harmful  to  the  solar  and  distributed  rooftop  solar 
generation industry.

Among other government-established incentives, net metering and related policies have supported the growth 
of  on-grid  solar  products,  and  changes  to  such  policies  may  reduce  demand  for  electricity  from  our  solar  service 
offerings. Net metering is a utility rate program that requires a consumer’s electric company to purchase the excess 
solar energy that the consumer’s solar panels produce and pay the retail rate for electricity exported to the grid, less 
certain  non-bypassable  fees  to  the  consumer.  For  example,  in  2016,  the  CPUC  issued  an  order  retaining  retail-
based  net  metering  credits  for  residential  customers  of  California's  major  utilities  net  meterings  as  part  of  Net 
Energy  Metering  2.0  ("NEM  2.0").  Customers  under  NEM  2.0  are  subject  to  interconnection  charges  and  time-of-
use  rates  with  different  electricity  prices  during  peak  and  off-peak  hours.  Existing  customers  who  receive  service 
under the prior net metering program, as well as new customers under the NEM 2.0 program, remain eligible for the 
NEM 2.0 program for a period of 20 years. On September 3, 2020, the CPUC opened a new proceeding to review 
its current net metering policies and to develop NEM 3.0, also referred to by the CPUC as the NEM 2.0 tariff and 
issued  its  final  decision  on  December  15,  2022.  NEM  3.0  fundamentally  changes  NEM  2.0  by  basing  export 
compensation  not  on  retail  rates,  but  on  a  tool  called  the Avoided  Cost  Calculator  (“ACC”)  designed  to  measure 
utility  distribution  costs  avoided  by  installing  distributed  generation,  and  which  provides  values  that  vary  by  hour, 
month  and  service  territory. The  CPUC  is  also  imposing  “adders”  to  these  hourly ACC  values  for  the  first  several 
years of the tariff to ease the transition for the solar market. On average, these ACC values are significantly lower 
than retail rates and may therefore increase payback periods, and thereby reduce demand, for solar-only systems. 
While the final NEM 3.0 decision was a significant improvement over CPUC’s previously issued proposed decision, 
it could still reduce export compensation and demand for solar-only systems and harm our business.

We depend on limited-source suppliers for key components and products. If we are unable to source these 
components and products on a timely basis, we will not be able to deliver our products to our customers.

We  depend  on  sole-source  and  limited-source  suppliers  for  key  components  of  our  products,  such  as  our 
ASICs  and  lithium-ion  batteries.  Any  of  the  sole-source  and  limited-source  suppliers  upon  whom  we  rely  could 
experience  quality  and  reliability  issues,  stop  producing  our  components,  cease  operations,  or  be  acquired  by,  or 
enter  into  exclusive  arrangements  with,  our  competitors.  We  generally  do  not  have  long-term  supply  agreements 
with our suppliers, and our purchase volumes may currently be too low for us to be considered a priority customer 
by most of our suppliers. As a result, most of these suppliers could stop selling to us at commercially reasonable 
prices, or at all. Any such quality or reliability issue, or interruption or delay may force us to seek similar components 
or  products  from  alternative  sources,  which  may  not  be  available  on  commercially  reasonable  terms,  or  at  all. 
Switching  suppliers  may  require  that  we  redesign  our  products  to  accommodate  new  components  and  may 
potentially require us to re-qualify our products, which would be costly and time-consuming. Any interruption in the 
quality or supply of sole-source or limited-source components for our products would adversely affect our ability to 
meet scheduled product deliveries to our customers and could result in lost revenue or higher expenses and would 
harm our business.

Challenges relating to current supply chain constraints, including with respect to semiconductors and 
integrated circuits, could adversely impact our revenues, gross margins and results of operations.

Due to increased demand across a range of industries, the global supply market for certain raw materials and 
components,  including,  in  particular,  semiconductors,  integrated  circuits  and  other  electronic  components  used  in 
some  of  our  products,  has  experienced  significant  constraint  and  disruption  in  recent  periods.  This  constrained 
supply environment has adversely affected, and could further affect, component availability, lead times and cost and 
could  increase  the  likelihood  of  unexpected  cancellations  or  delays  of  previously  committed  supply  of  key 
components. In an effort to mitigate these risks, we have incurred higher costs to secure available inventory, have 
extended  our  purchase  commitments  and  placed  non-cancellable,  advanced  orders  with  or  through  suppliers, 
particularly for long lead time components. Our efforts to expand our manufacturing capacity and multi-source and 
pre-order components may fail to reduce the impact of these adverse supply chain conditions on our business.

Despite  our  mitigation  efforts,  these  constrained  supply  conditions  may  adversely  impact  our  revenues  and 
results  of  operations. At  the  same  time,  increased  costs  associated  with  supply  premiums,  labor,  expediting  fees 
and  freight  and  logistics  may  adversely  impact  our  gross  margin,  profitability  and  ability  to  reduce  the  cost  to 
manufacture  our  products  in  a  manner  consistent  with  prior  periods.  The  COVID-19  pandemic  and  conflict  in 
Ukraine has also contributed to and exacerbated this strain, and there can be no assurance that the impacts of the 
pandemic and conflict in Ukraine on our supply chain will not continue, or worsen, in the future. The current supply 

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chain challenges could also result in increased use of cash, engineering design changes and delays in new product 
introductions,  each  of  which  could  adversely  impact  our  business  and  financial  results.  In  the  event  these  supply 
chain  challenges  persist  for  the  foreseeable  future,  these  conditions  could  adversely  impact  our  results  of 
operations.

The solar industry is highly competitive, and we expect to face increased competition as new and existing 
competitors  introduce  products  or  develop  alternative  technologies,  which  could  negatively  impact  our 
business, financial condition and results of operations.

We compete primarily against central and string inverter manufacturers, as well as against new solutions and 
emerging  technologies  that  directly  compete  with  our  business.  A  number  of  companies  have  developed  or  are 
developing microinverters and other products that will compete directly with our solutions in the module-level power 
electronics  market.  We  also  compete  against  manufacturers  of  energy  storage  systems  and  EV  chargers  for  our 
solutions in these markets.

Competitors in the inverter market include, among others, SolarEdge Technologies, Inc., Fronius International 
GmbH, SMA Solar Technology AG, AP Systems, Generac Holdings Inc., Tesla, Inc., Huawei Technologies Co. Ltd., 
Delta,  Ginglong,  Sungrow,  Solax,  Hoymiles  and  other  companies  offering  string  inverters  with  and  without  solar 
optimizers.  Other  existing  or  emerging  companies  may  also  begin  offering  alternative  microinverter  solutions. 
Competitors in the storage market include Tesla, SolarEdge, LG Chem, Sonnen, Generac, Panasonic, BYD, E3/DC, 
Senec,  Schneider,  Briggs  &  Stratton  and  other  producers  of  battery  cells  and  integrated  storage  systems  market. 
Competitors in the EV charger market include Wallbox, ChargePoint, Tesla, JuiceBox and EVBox, among others.

Several  of  our  existing  and  potential  competitors  are  significantly  larger  than  we  are  and  may  have  greater 
financial,  marketing,  distribution  and  customer  support  resources  and  may  have  significantly  broader  brand 
recognition, especially in certain markets. In addition, some of our competitors have more resources and experience 
in  developing  or  acquiring  new  products  and  technologies  and  creating  market  awareness  for  these  offerings. 
Further,  certain  competitors  may  be  able  to  develop  new  products  more  quickly  than  we  can  and  may  be  able  to 
develop  products  that  are  more  reliable  or  that  provide  more  functionality  than  ours.  In  addition,  some  of  our 
competitors have the financial resources to offer competitive products at aggressive or below-market pricing levels, 
which could cause us to lose sales or market share or require us to lower prices of our products in order to compete 
effectively.  Suppliers  of  solar  products,  particularly  solar  modules,  have  experienced  eroding  prices  over  the  last 
several years and as a result many have faced margin compression and declining revenues. If we have to reduce 
our prices, or if we are unable to offset any future reductions in our average selling prices by increasing our sales 
volume, reducing our costs and expenses or introducing new products, our revenues and gross profit would suffer.

Significant developments in alternative technologies, such as advances in other forms of distributed solar PV 
power generation, storage solutions such as batteries, the widespread use or adoption of fuel cells for residential or 
commercial properties or improvements in other forms of centralized power production may have a material adverse 
effect on our business and prospects. Any failure by us to adopt new or enhanced technologies or processes, or to 
react to changes in existing technologies, could result in product obsolescence, the loss of competitiveness of our 
products, decreased revenue and a loss of market share to competitors.

We  also  may  face  competition  from  some  of  our  customers  or  potential  customers  who  evaluate  our 
capabilities  against  the  merits  of  manufacturing  products  internally.  Other  solar  module  manufacturers  could  also 
develop or acquire competing inverter technology or attempt to develop components that directly perform DC-to-AC 
conversion in the module itself. Due to the fact that such customers may not seek to make a profit directly from the 
manufacture of these products, they may have the ability to manufacture competitive products at a lower cost than 
we would charge such customers. As a result, these customers or potential customers may purchase fewer of our 
systems  or  sell  products  that  compete  with  our  systems,  which  would  negatively  impact  our  revenue  and  gross 
profit.

Our recent and planned expansion into existing and new markets could subject us to additional business, 
financial and competitive risks.

We  currently  offer  solar  energy  systems  targeting  the  residential  and  commercial  markets  throughout  the 
world,  and  we  intend  to  expand  into  other  international  markets.  Our  success  in  new  geographic  and  product 
markets will depend on a number of factors, such as:

• acceptance of microinverters in markets in which they have not traditionally been used;

• our ability to compete in new product markets to which we are not accustomed;

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• our ability to manage manufacturing capacity and production;

• willingness of our potential customers to incur a higher upfront capital investment than may be required for 

competing solutions;

• timely qualification and certification of new products;

• our ability to reduce production costs in order to price our products competitively;

• availability of government subsidies and economic incentives for solar energy solutions;

• accurate forecasting and effective management of inventory levels in line with anticipated product demand;

• our customer service capabilities and responsiveness; and

• timely hiring of skilled employees and the efficient execution of our project plan.

Failure  to  address  these  new  markets  successfully,  to  generate  sufficient  revenue  from  these  markets  to 
offset  associated  research  and  development,  marketing  and  manufacturing  costs,  or  to  otherwise  effectively 
anticipate  and  manage  the  risks  and  challenges  associated  with  our  potential  expansion  into  new  product  and 
geographic markets, could adversely affect our revenues and our ability to achieve or sustain profitability.

We may fail to capture customers as we design and develop new products and update existing products.

We  are  pursuing  opportunities  in  energy  management  and  energy  storage  that  are  highly  competitive 
markets.  We  have  made  investments  in  our  infrastructure,  increased  our  operating  costs  and  forgone  other 
business opportunities in order to seek opportunities in these areas and will continue to do so. Any new product is 
subject  to  certain  risks,  including  component  sourcing,  strategic  partner  selection  and  execution,  customer 
acceptance,  competition,  product  differentiation,  market  timing,  challenges  relating  to  economies  of  scale  in 
component sourcing and the ability to attract and retain qualified personnel. There can be no assurance that we will 
be  able  to  develop  and  grow  these  or  any  other  new  concepts  to  a  point  where  they  will  become  profitable  or 
generate  positive  cash  flow.  If  we  fail  to  execute  on  our  plan  with  respect  to  new  product  introductions,  or  fail  to 
adequately update our legacy products, we may fail to generate revenue in the quantities or timeline projected, thus, 
having a materially adverse impact on our operating results and financial stability.

We  started  production  shipments  of  IQ8  microinverters  and  our  most  recent  generation  of  IQ  Batteries  to 
customers  in  North  America  during  the  fourth  quarter  of  2021,  and  we  continue  to  develop  our  EV  charging 
products. Our new products are complex and require significant preparation, precautionary safety measures, time-
consuming  string  calculations,  extensive  design  expertise  and  specialized  installation  equipment,  training  and 
knowledge.  Together,  these  factors  significantly  increase  complexity  and  cost  of  installation  and  limit  overall 
productivity  for  the  installer.  Our  installers  may  not  have  sufficient  resources  or  expertise  necessary  to  sell  our 
products at the prices, in the volumes and within the time frames that we expect, which could hinder our ability to 
expand our operations and harm our revenue and operating results.

We  depend  upon  a  small  number  of  outside  contract  manufacturers,  and  our  business  and  operations 
could be disrupted if we encounter problems with these contract manufacturers.

We do not have internal manufacturing capabilities and rely upon a small number of contract manufacturers to 
build  our  products.  In  particular,  we  outsource  the  manufacturing  of  our  products  to  third-party  contract 
manufacturers.  Flex,  Salcomp  and  Sunwoda  assemble  and  test  our  IQ  Microinverter,  ACM  products,  IQ  Battery 
storage  systems  and  IQ  Gateway  products.  Prices  for  such  services  are  agreed  to  by  the  parties  on  a  quarterly 
basis, and we are obligated to purchase manufactured products and raw materials that cannot be resold upon the 
termination  of  the  related  agreement.  As  of  December  31,  2022,  our  related  purchase  obligations  (including 
amounts  related  to  component  inventory  procured  by  our  primary  contract  manufacturers  on  our  behalf)  were 
approximately  $589.3  million. The  timing  of  purchases  in  future  periods  could  differ  materially  from  our  estimates 
due  to  fluctuations  in  demand  requirements  related  to  varying  sales  levels  as  well  as  changes  in  economic 
conditions.

Flex also provides receiving, kitting, storage, transportation, inventory visibility and other value-added logistics 
services  at  locations  managed  by  Flex.  In  addition,  we  rely  on  several  unaffiliated  companies  to  supply  certain 
components used in the fabrication of our products.

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Our  reliance  on  a  small  number  of  contract  manufacturers  makes  us  vulnerable  to  possible  capacity 
constraints and reduced control over component availability, delivery schedules, manufacturing yields and costs. We 
do  not  have  long-term  supply  contracts  with  our  contract  manufacturing  partners.  Consequently,  these 
manufacturers are not obligated to supply products to us for any period, in any specified quantity or at any certain 
price. If any of these suppliers reduce or eliminate the supply of the components to us in the future, our revenues, 
business, financial condition and results of operations would be adversely impacted.

Further,  the  revenues  that  our  contract  manufacturers  generate  from  our  orders  may  represent  a  relatively 
small percentage of their overall revenues. As a result, fulfilling our orders may not be considered a priority in the 
event of constrained ability to fulfill all of their customer obligations in a timely manner. In addition, the facilities in 
which the vast majority of our products are manufactured are located outside of the United States. We believe that 
the  location  of  these  facilities  outside  of  the  United  States  increases  our  supply  risk,  including  the  risk  of  supply 
interruptions or reductions in manufacturing quality or controls.

If any of our contract manufacturers were unable or unwilling to manufacture our products in required volumes 
and at high quality levels or renew existing terms under supply agreements, we would have to identify, qualify and 
select acceptable alternative contract manufacturers, which may not be available to us on favorable terms, if at all. 
An alternative contract manufacturer may not be available to us when needed or may not be in a position to satisfy 
our  quality  or  production  requirements  on  commercially  reasonable  terms.  Any  significant  interruption  in 
manufacturing would require us to reduce our supply of products to our customers, which in turn would reduce our 
revenues, harm our relationships with our customers and cause us to forgo potential revenue opportunities.

If we or our contract manufacturers are unable to obtain raw materials in a timely manner or if the price of 
raw  materials  increases  significantly,  production  time  and  product  costs  could  increase,  which  may 
adversely affect our business.

The  manufacturing  and  packaging  processes  used  by  our  contract  manufacturers  depend  on  raw  materials 
such  as  copper,  aluminum,  silicon  and  petroleum-based  products.  From  time  to  time,  suppliers  may  extend  lead 
times, limit supplies or increase prices due to capacity constraints or other factors. Certain of our suppliers have the 
ability to pass along to us directly or through our contract manufacturers any increases in the price of raw materials. 
If  the  prices  of  these  raw  materials  rise  significantly,  we  may  be  unable  to  pass  on  the  increased  cost  to  our 
customers.  While  we  may  from  time  to  time  enter  into  hedging  transactions  to  reduce  our  exposure  to  wide 
fluctuations  in  the  cost  of  raw  materials,  the  availability  and  effectiveness  of  these  hedging  transactions  may  be 
limited.  Due  to  all  these  factors,  our  results  of  operations  could  be  adversely  affected  if  we  or  our  contract 
manufacturers are unable to obtain adequate supplies of raw materials in a timely manner or at reasonable cost. In 
addition, from time to time, we or our contract manufacturers may need to reject raw materials that do not meet our 
specifications, resulting in potential delays or declines in output. Furthermore, problems with our raw materials may 
give rise to compatibility or performance issues in our products, which could lead to an increase in product warranty 
claims.  Errors  or  defects  may  arise  from  raw  materials  supplied  by  third  parties  that  are  beyond  our  detection  or 
control, which could lead to additional product warranty claims that may adversely affect our business and results of 
operations.

Manufacturing  problems  could  result  in  delays  in  product  shipments,  which  would  adversely  affect  our 
revenue, competitive position and reputation.

We have in the past and may in the future experience delays, disruptions or quality control problems in our 
manufacturing operations. Our product development, manufacturing and testing processes are complex and require 
significant technological and production process expertise. Such processes involve a number of precise steps from 
design  to  production.  Any  change  in  our  processes  could  cause  one  or  more  production  errors,  requiring  a 
temporary  suspension  or  delay  in  our  production  line  until  the  errors  can  be  researched,  identified  and  properly 
addressed  and  rectified.  This  may  occur  particularly  as  we  introduce  new  products,  modify  our  engineering  and 
production  techniques  and  expand  our  capacity.  In  addition,  our  failure  to  maintain  appropriate  quality  assurance 
processes could result in increased product failures, loss of customers, increased production costs and delays. Any 
of  these  developments  could  have  a  material  adverse  effect  on  our  business,  financial  condition  and  results  of 
operations.

A disruption could also occur in one of our contract manufacturers’ facilities due to any number of reasons, 
such  as  equipment  failure,  contaminated  materials,  the  effects  of  climate  change  and  related  extreme  weather 
events, COVID-19 pandemic impacts or process deviations, which could adversely impact manufacturing yields or 
delay  product  shipments. As  a  result,  we  could  incur  additional  costs  that  would  adversely  affect  our  gross  profit, 

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and product shipments to our customers could be delayed beyond the schedules requested, which would negatively 
affect our revenue, competitive position and reputation.

Additionally, manufacturing yields depend on a number of factors, including the stability and manufacturability 
of the product design, manufacturing improvements gained over cumulative production volumes, and the quality and 
consistency  of  component  parts.  Capacity  constraints,  raw  materials  shortages,  logistics  issues,  labor  shortages 
and changes in customer requirements, manufacturing facilities or processes have historically caused, and may in 
the  future  cause,  reduced  manufacturing  yields,  negatively  impacting  the  gross  profit  on,  and  our  production 
capacity for, those products. Moreover, an increase in the rejection and rework rate of products during the quality 
control process before, during or after manufacture would result in our experiencing lower yields, gross profit and 
production  capacity.  Furthermore,  counterfeit  parts  in  our  supply  chain  have  been  and  continue  to  be  a  concern, 
since any counterfeit part can be a lower quality product, which may affect our system reliability.

The  risks  of  these  types  of  manufacturing  problems  are  further  increased  during  the  introduction  of  new 
product lines, which has from time to time caused, and may in the future cause, temporary suspension of product 
lines while problems are addressed or corrected. Since our business is substantially dependent on a limited number 
of  product  lines,  any  prolonged  or  substantial  suspension  of  an  individual  product  line  could  result  in  a  material 
adverse effect on our revenue, gross profit, competitive position and distributor and customer relationships.

We rely primarily on distributors, installers and providers of solar financing to assist in selling our products 
to customers, and the failure of these customers to perform at the expected level, or at all, would have an 
adverse effect on our business, financial condition and results of our operations.

We  sell  our  solutions  primarily  through  distributors,  as  well  as  through  direct  sales  to  solar  equipment 
installers and developers of third-party solar finance offerings. We do not have exclusive arrangements with these 
third parties. As a result, many of these third parties, or customers, also use or market and sell products from our 
competitors, which may reduce our sales. These customers may generally terminate their relationships with us at 
any  time,  or  with  short  notice,  and  further  may  fail  to  devote  the  resources  necessary  to  sell  our  products  at  the 
prices, in the volumes and within the time frames that we expect, or may focus their marketing and sales efforts on 
products  of  our  competitors.  In  addition,  participants  in  the  solar  industry  are  becoming  increasingly  focused  on 
vertical  integration  of  the  solar  financing  and  installation  process,  which  may  lead  to  an  overall  reduction  in  the 
number of potential parties who may purchase and install our products.

We typically provide our distributors and installers with training and other programs, including accreditations 
and certifications; however, these programs may not be effective or utilized consistently. Further, newer distributors 
and  installers  may  require  extensive  training  and  may  take  significant  time  and  resources  to  achieve  productivity. 
Our distributors and installers may subject us to lawsuits, potential liability and reputational harm if, for example, any 
were  to  misrepresent  the  functionality  of  our  platform  or  products  to  customers,  fail  to  perform  services  to  our 
customers’  expectations,  or  violate  laws  or  our  policies.  In  addition,  our  distributors  and  installers  may  utilize  our 
platform to develop products and services that could potentially compete with products and services that we offer 
currently or in the future. Concerns over competitive matters or intellectual property ownership could constrain the 
growth and development of these relationships or result in the termination of one or more relationships. If we fail to 
effectively manage and grow our network of distributors and installers, or properly monitor the quality and efficacy of 
their service delivery, our ability to sell our products and efficiently provide our services may be impacted, and our 
operating results may be harmed.

Our  future  performance  depends  on  our  ability  to  effectively  manage  our  relationships  with  our  existing 
customers, as well as to attract additional customers that will be able to market and support our products effectively, 
especially  in  markets  in  which  we  have  not  previously  distributed  our  products.  Termination  of  agreements  with 
current  customers,  failure  by  customers  to  perform  as  expected,  or  failure  by  us  to  cultivate  new  customer 
relationships, could hinder our ability to expand our operations and harm our revenue and operating results.

The COVID-19 pandemic may continue to, and other actual or threatened epidemics, pandemics, outbreaks, 
or public health crises may in the future, adversely affect our and our customers’ results of operations and 
financial condition, our supply chain and our business.

The  global  spread  of  COVID-19  and  other  actual  or  threatened  epidemics,  pandemics,  outbreaks,  or  public 
health crises may adversely affect our results of operations and disrupt global supply chains. Any disruptions to our 
suppliers  and  manufacturers  by,  for  example,  worker  absenteeism,  quarantines,  office  and  factory  closures, 
disruptions  to  ports  and  other  shipping  infrastructure,  or  other  travel  or  health-related  restrictions  have  adversely 

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affected and could continue to have an adverse impact on our business and operations. As a result of these supply 
chain  constraints  and  possible  disruptions,  we  have  worked  with  our  suppliers  to  improve  our  supply  chain  in  the 
event  of  future  shutdowns,  but  there  can  be  no  assurance  that  supply  chain  constraints  and  disruptions  will  not 
adversely  impact  our  business.  In  addition,  potential  disruptions  have  and  could  in  the  future  put  limits  on  our 
manufacturing  availability  or  capacity,  or  cause  delays  in  production  or  delivery  of  components,  and  our  ability  to 
produce finished products, all of which could adversely affect our business, operations and customer relationships.

Our liquidity also may be negatively impacted if sales decline significantly for an extended period due to the 
impact of COVID-19 or other epidemics. Further, the extent to which the COVID-19 pandemic and our precautionary 
measures  in  response  thereto  impact  our  business  and  liquidity  will  depend  on  future  developments,  which  are 
uncertain and cannot be precisely predicted at this time.

Moreover, the long-term effects of the COVID-19 pandemic remain unknown, and it is possible that following 
the  pandemic  in-person  interactions  will  remain  limited,  which  would  negatively  impact  our  sales  team  and  our 
future revenues. These and other potential impacts of the COVID-19 pandemic discussed elsewhere in this “Risk 
Factors”  section,  as  well  as  any  future  and  unforeseen  risks  related  to  the  pandemic  not  yet  contemplated,  could 
materially and adversely affect our business, financial condition and results of operations. To the extent the evolving 
effects of the COVID-19 pandemic adversely affect our business, financial condition and results of operations, they 
may also have the effect of heightening many of the other risks and uncertainties described elsewhere in this “Risk 
Factors” section. 

It is also possible that future global pandemics could also occur and also materially and adversely affect our 

business, financial condition and results of operations.

The loss of, or events affecting, one of our major customers could reduce our sales and have an adverse 
effect on our business, financial condition and results of operations.

For  the  fiscal  year  ended  December  31,  2022,  one  customer  accounted  for  approximately  37%  of  total  net 
revenues. Further, as of December 31, 2022, amounts due from one customer represented approximately 24% of 
the  total  accounts  receivable  balance.  Our  customers’  decisions  to  purchase  our  products  are  influenced  by  a 
number  of  factors  outside  of  our  control,  including  retail  energy  prices  and  government  regulation  and  incentives, 
among others. Although we have agreements with some of our largest customers, these agreements generally do 
not have long-term purchase commitments and are generally terminable by either party after a relatively short notice 
period. In addition, these customers may decide to no longer use, or to reduce the use of, our products and services 
for other reasons that may be out of our control. We may also be affected by events impacting our large customers 
that result in their decreasing their orders with us or impairing their ability to pay for our products. The loss of, or 
events  affecting,  one  or  more  of  our  large  customers  has  had  from  time  to  time,  and  could  in  the  future  have  a 
material adverse effect on our business, financial condition and results of operations.

Our energy systems, including our storage solution, integrated ACM Module, IQ8 solar microinverters and 
Ensemble  technology,  may  not  achieve  broader  market  acceptance,  which  would  prevent  us  from 
increasing our revenue and market share.

If  we  fail  to  achieve  broader  market  acceptance  of  Enphase  Energy  System,  including  international 
acceptance of our IQ8 microinverters, ACM products and Ensemble technology, there would be an adverse impact 
on our ability to increase our revenue, gain market share and achieve and sustain profitability. Our ability to achieve 
broader market acceptance for our products and services will be impacted by a number of factors, including:

•

•

•

•

•

our  ability  to  produce  PV  systems  that  compete  favorably  against  other  solutions  on  the  basis  of  price, 
quality, reliability and performance;

our ability to timely introduce and complete new designs and timely qualify and certify our products;

whether installers, system owners and solar financing providers will continue to adopt our systems, which 
have a relatively limited history with respect to reliability and performance;

whether installers, system owners and solar financing providers will adopt our storage solution, which is a 
relatively new technology with a limited history with respect to reliability and performance;

the ability of prospective system owners to obtain long-term financing for solar PV installations based on 
our product platform on acceptable terms or at all;

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•

•

our  ability  to  develop  products,  systems  and  services  that  comply  with  local  standards  and  regulatory 
requirements, as well as potential in-country manufacturing requirements; and

our ability to develop and maintain successful relationships with our customers and suppliers. 

In  addition,  our  ability  to  achieve  increased  market  share  will  depend  on  our  ability  to  increase  sales  to 
established  solar  installers,  who  have  traditionally  sold  central  or  string  inverters,  or  who  currently  sell  DC-to-DC 
optimizers. These installers often have made substantial investments in design, installation resources and training in 
traditional central or string inverter systems or DC optimizers, which may create challenges for us to achieve their 
adoption of our solutions.

Our success in marketing and selling ACM products depends in part upon our ability to continue to work 
closely with leading solar module manufacturers.

We continue to work on variants of our microinverter systems that enable direct attachment of a microinverter 
to solar modules. The market success of such ACM products will depend in part on our ability to continue to work 
closely with SunPower and other solar module manufacturers to design microinverters that are compatible with and 
can be attached directly to solar modules. We may not be able to encourage solar module manufacturers to work 
with us on the development of such compatible solutions for a variety of reasons, including differences in marketing 
or selling strategy, competitive considerations, lack of competitive pricing and technological compatibility. In addition, 
our  ability  to  form  effective  relationships  with  solar  module  manufacturers  may  be  adversely  affected  by  the 
substantial  challenges  faced  by  many  of  these  manufacturers  due  to  declining  prices  and  revenues  from  sales  of 
solar modules and the tariffs in the United States.

If our IQ Microinverters or IQ Batteries contain manufacturing defects, or our Ensemble contains software 
defects, our business and financial results could be harmed.

We design and make complex products and they may contain undetected or latent errors or defects. Complex 
hardware and software systems, such as our products, can often contain undetected errors when first introduced or 
as  new  versions  are  released.  In  the  past,  we  have  experienced  latent  defects  only  discovered  once  the 
microinverters or batteries are deployed in the field. Changes in our supply chain or the failure of our suppliers to 
otherwise provide our third-party contract manufacturers with components or materials that meet our specifications 
could  introduce  defects  into  our  products. As  we  grow  our  product  volumes,  the  chance  of  manufacturing  defects 
could  increase.  In  addition,  new  product  introductions  or  design  changes  made  for  the  purpose  of  cost  reduction, 
performance  improvement,  or  improved  reliability  could  introduce  new  design  defects  that  may  impact  the 
performance  and  life  of  our  products.  Any  design  or  manufacturing  defects  or  other  failures  of  our  products  to 
perform as expected could cause us to incur significant service and re-engineering costs, divert the attention of our 
engineering  personnel  from  product  development  efforts  and  significantly  and  adversely  affect  installer  and 
customer  satisfaction,  market  acceptance  and  our  business  reputation.  Furthermore,  if  we  are  unable  to  correct 
manufacturing  defects  or  other  failures  of  products  in  a  manner  satisfactory  to  our  customers,  our  results  of 
operations, customer satisfaction and our business reputation could be adversely affected.

In addition, due to the high energy density of lithium-ion cells, mishandling, inappropriate storage or delivery, 
non-compliance  with  safety  instructions  or  field  failures  can  potentially  cause  a  battery  cell  to  rapidly  release  its 
stored energy, which may in turn cause a thermal event that can ignite nearby materials, including other lithium-ion 
cells. As the use of lithium-ion batteries becomes more widespread, these events may occur more often, causing 
damage  to  property,  injury,  lawsuits  and  adverse  publicity,  which  may  adversely  affect  our  reputation,  results  of 
operations or financial condition.

If we fail to retain our key personnel or if we fail to attract additional qualified personnel, we may not be able 
to achieve our anticipated level of growth and our business could suffer.

Our  future  success  and  ability  to  implement  our  business  strategy  depends,  in  part,  on  our  ability  to  attract 
and retain key personnel, and on the continued contributions of members of our senior management team and key 
personnel  in  areas  such  as  engineering,  marketing  and  sales,  any  of  whom  would  be  difficult  to  replace.  For 
example,  we  are  highly  dependent  on  our  president  and  chief  executive  officer,  Badrinarayanan  Kothandaraman. 
Mr.  Kothandaraman  possesses  technical  knowledge  of  our  business,  operations  and  strategy,  and  he  has 
substantial experience and contacts that help us implement our goals, strategy and plan. If we lose his services or if 
he decides to join a competitor or otherwise compete directly or indirectly with us, our business, operating results 
and financial condition could be materially harmed.

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All of our employees, including our senior management, are free to terminate their employment relationships 
with us at any time. Competition for highly skilled executives and employees in the technology industry is intense, 
and our competitors have targeted individuals in our organization that have desired skills and experience. If we are 
not able to continue to attract, train and retain our leadership team and our qualified employees necessary for our 
business,  the  progress  of  our  product  development  programs  could  be  hindered,  and  we  could  be  materially 
adversely affected. To help attract, retain and motivate our executives and qualified employees, we use stock-based 
incentive  awards,  including  restricted  stock  units.  If  the  value  of  such  stock  awards  does  not  appreciate  as 
measured  by  the  performance  of  the  price  of  our  common  stock,  or  if  our  share-based  compensation  otherwise 
ceases to be viewed as a valuable benefit, our ability to attract, retain and motivate our executives and employees 
could be weakened, which could harm our business and results of operations. Also, if the value of our stock awards 
increases substantially, this could potentially create substantial personal wealth for our executives and employees 
and  affect  our  ability  to  retain  our  personnel.  In  addition,  any  future  restructuring  plans  may  adversely  impact  our 
ability to attract and retain key employees.

Additionally,  our  ability  to  attract  qualified  personnel,  including  senior  management  and  key  technical 
personnel, is critical to the execution of our growth strategy. Competition for qualified senior management personnel 
and highly skilled individuals with technical expertise is extremely intense, and we face challenges identifying, hiring 
and retaining qualified personnel in all areas of our business. In addition, integrating new employees into our team 
could  prove  disruptive  to  our  operations,  require  substantial  resources  and  management  attention  and  ultimately 
prove unsuccessful. Our failure to attract and retain qualified senior management and other key technical personnel 
could  limit  or  delay  our  strategic  efforts,  which  could  have  a  material  adverse  effect  on  our  business,  financial 
condition, results of operations and prospects.

Any  failure  by  management  to  properly  manage  growth  could  have  a  material  adverse  effect  on  our 
business, operating results and financial condition.

Our business has grown rapidly, and, if our business develops as currently expected, we anticipate that we 
will continue to grow rapidly in the near future. Our expected rapid growth could place significant demands on our 
management, operations, systems, accounting, internal controls and financial resources, and it may also negatively 
impact our ability to retain key personnel. If we experience difficulties in any of these or other areas, we may not be 
able to expand our business successfully or effectively manage our growth. Any failure by management to manage 
our  growth  and  to  respond  to  changes  in  our  business  could  have  a  material  adverse  effect  on  our  business, 
financial condition and results of operations.

If we are unsuccessful in continuing to expand our direct-to-consumer sales channel by driving purchases 
through our website, our business and results of operation could be harmed.

Although we primarily sell our solutions and products directly to solar distributors, who resell to installers and 
integrators,  who  then  in  turn  integrate  our  products  into  complete  solar  PV  installations  for  residential  and 
commercial system owners, we have recently invested significant resources in our direct-to-consumer sales channel 
through our website, and our future growth relies, in part, on our ability to attract consumers through this channel. 
Expanding  our  direct-to-consumer  sales  model  will  require  significant  expenditures  in  marketing,  software 
development and infrastructure. Further, the success of direct-to-consumer sales through our website is also subject 
to  general  business  regulations  and  laws,  as  well  as  federal,  state,  foreign  and  provincial  regulations  and  laws 
specifically governing the internet and e-commerce. These regulations and laws may cover taxation, tariffs, privacy, 
data  protection,  pricing,  distribution,  electronic  contracts  and  other  communications,  consumer  protection  and 
intellectual  property. These  laws  and  regulations  can  be  complex,  difficult  to  interpret  and  may  change  over  time. 
Continued  regulatory  limitations  and  other  obstacles  interfering  with  our  ability  to  sell  our  products  directly  to 
consumers  could  have  a  negative  and  material  impact  our  business,  prospects,  financial  condition  and  results  of 
operations. 

Further, the expansion of our direct-to-consumer channel could alienate some of our existing distributors and 
installers  and  cause  a  reduction  in  sales  from  these  third  parties.  Our  existing  distributors  and  installers  may 
perceive  themselves  to  be  at  a  disadvantage  based  on  the  direct-to-consumer  sales  offered  through  our  website. 
Due to these and other factors, conflicts in our sales channels could arise and cause our existing distributors and 
installers  to  divert  resources  away  from  the  promotion  and  sale  of  our  products.  If  we  are  unable  to  successfully 
continue to drive traffic to, and increase sales through, our website, our business and results of operations could be 
harmed.

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Our business has been and could continue to be affected by seasonal trends and construction cycles.

We  have  been  and  could  continue  to  be  subject  to  industry-specific  seasonal  fluctuations.  Historically,  the 
majority of our revenues are from the North American and European regions, which experience higher sales of our 
products  in  the  second,  third  and  fourth  quarters  and  have  been  affected  by  seasonal  customer  demand  trends, 
including weather patterns and construction cycles. The first quarter historically has had softer customer demand in 
our industry, due to these same factors. In the United States, customers will sometimes make purchasing decisions 
towards  the  end  of  the  year  in  order  to  take  advantage  of  tax  credits  or  for  budgetary  reasons.  In  addition, 
construction  levels  are  typically  slower  in  colder  and  wetter  months.  In  European  countries  with  FiTs,  the 
construction of solar PV systems may be concentrated during the second half of the calendar year, largely due to 
the annual reduction of the applicable minimum FiT and the fact that the coldest winter months are January through 
March. Accordingly, our business and quarterly results of operations could be affected by seasonal fluctuations in 
the future.

Risks Related to our Intellectual Property and Technology

We  are  dependent  on  information  technology  systems,  infrastructure  and  data.  We  could  be  subject  to 
breaches  of  our  information  technology  systems  caused  by  system  security  risks,  failure  of  our  data 
protection,  cyber-attacks  and  erroneous  or  non-malicious  actions  or  failures  to  act  by  our  employees  or 
others  with  authorized  access  to  our  networks,  which  could  cause  significant  reputational,  legal  and 
financial damages.

Like many companies, we use and store a wide variety of confidential and proprietary information relating to 
our  business.  The  secure  maintenance  of  this  information  is  critical  to  our  business  and  reputation.  Despite  our 
implementation  of  security  measures,  our  systems  are  vulnerable  to  damages  from  computer  viruses,  computer 
denial-of-service attacks, ransomware, supply chain attacks, worms and other malicious software programs or other 
attacks, covert introduction of malware to computers and networks, unauthorized access, including impersonation of 
unauthorized users, efforts to discover and exploit any security vulnerabilities or securities weaknesses and other 
similar  disruptions.  Although  we  make  significant  efforts  to  maintain  the  security  and  integrity  of  our  information 
technology  and  related  systems  and  have  implemented  measures  to  manage  the  risk  of  a  security  breach  or 
disruption,  there  can  be  no  assurance  that  our  security  efforts  and  measures  will  be  effective,  or  that  attempted 
security breaches or disruptions would not be successful or damaging.

The techniques used in attempted cyber-attacks and intrusions are sophisticated and constantly evolving and 
may be difficult to detect for long periods of time. We may be unable to anticipate these techniques or implement 
adequate preventative measures. Although to date we have not experienced any material breaches of our systems 
that could have material adverse effect on our business, attacks and intrusions on our systems will continue and we 
may  experience  a  breach  of  our  systems  that  compromises  sensitive  company  information  or  customer  data.  In 
addition, hardware, software, or applications we develop or procure from third parties may contain defects in design 
or  manufacture  or  other  problems  that  could  unexpectedly  compromise  information  security.  Intentional  or  non-
malicious breaches by employees or others may pose a risk that sensitive data, including our intellectual property, 
trade  secrets  or  personal  information  of  our  employees,  customers  or  users,  or  other  business  partners  may  be 
exposed  to  unauthorized  persons  or  to  the  public,  or  that  risks  of  loss  or  misuse  of  this  information  could  occur. 
Furthermore, if we experience a significant data security breach, we could be exposed to reputational damage and 
significant  costs,  including  to  rebuild  our  systems,  modify  our  products  and  services,  defend  litigation,  respond  to 
government enforcement actions, pay damages or take other remedial steps, any of which could adversely affect 
our business, results of operations and financial condition. In addition, we may be required to incur significant costs 
to protect against damage caused by these disruptions or security breaches in the future. These risks, as well as 
the  number  and  frequency  of  cybersecurity  events  globally,  may  also  be  heightened  during  times  of  geopolitical 
tension  or  instability  between  countries,  including,  for  example,  the  ongoing  military  conflict  between  Russia  and 
Ukraine.

We may also share information with contractors and third-party providers to conduct our business. Although 
such contractors and third-party providers typically implement encryption and authentication technologies to secure 
the transmission and storage of data, those third-party providers may experience a significant data security breach, 
which may also detrimentally affect our business, results of operations, and financial condition.

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The cost and operational consequences of implementing further data protection measures could be significant 
and  theft  of  our  intellectual  property  or  proprietary  business  information  could  require  substantial  expenditures  to 
remedy. Further, we cannot be certain that (a) our liability insurance will be sufficient in type or amount to cover us 
against claims related to security breaches, cyberattacks and other related breaches; (b) such coverage will cover 
any  indemnification  claims  against  us  relating  to  any  incident,  will  continue  to  be  available  to  us  on  economically 
reasonable  terms,  or  at  all;  and  (c)  any  insurer  will  not  deny  coverage  as  to  any  future  claim.  The  successful 
assertion  of  one  or  more  large  claims  against  us  that  exceed  available  insurance  coverage,  or  the  occurrence  of 
changes in our insurance policies, including premium increases or the imposition or large deductible or co-insurance 
requirements, could adversely affect our reputation, business, financial condition and results of operations.

Unauthorized use or disclosure of, or access to, any personal information maintained by us or on our behalf, 
whether through breach of our systems, breach of the systems of our suppliers or vendors by an unauthorized party, 
or  through  employee  or  contractor  error,  theft  or  misuse,  or  otherwise,  could  harm  our  business.  If  any  such 
unauthorized  use  or  disclosure  of,  or  access  to,  such  personal  information  was  to  occur,  our  operations  could  be 
seriously disrupted, and we could be subject to demands, claims and litigation by private parties and investigations, 
related  actions  and  penalties  by  regulatory  authorities.  In  addition,  we  could  incur  significant  costs  in  notifying 
affected  persons  and  entities  and  otherwise  complying  with  the  multitude  of  foreign,  federal,  state  and  local  laws 
and  regulations  relating  to  the  unauthorized  access  to,  or  use  or  disclosure  of,  personal  information.  Finally,  any 
perceived  or  actual  unauthorized  access  to,  or  use  or  disclosure  of,  such  information  could  harm  our  reputation, 
substantially impair our ability to attract and retain customers and have an adverse impact on our business, financial 
condition and results of operations.

The  software  we  use  in  providing  system  configuration  recommendations  or  potential  energy  savings 
estimates to customers relies in part on third-party information that may not be accurate or up-to-date; this 
may  therefore  generate  inaccurate  recommendations  or  estimates,  resulting  in  a  loss  of  reputation  and 
customer confidence.

We  provide  our  customers  online  tools  to  help  them  determine  proper  system  sizing  and  configurations, 
estimates  of  bill  savings  and  potential  revenues  resulting  from  executing  a  specific  curtailment  strategy.  These 
estimates  are  in  turn  based  on  a  number  of  factors  such  as  customer  tariff  structures,  estimated  wholesale 
electricity  prices,  future  economic  conditions  and  estimates  of  the  reduction  in  electricity  usage  as  a  result  of  a 
curtailment activity. If the estimates we provide prove to be significantly different from actual payments or savings 
received by our customers, it may result in the loss of reputation and/or customer confidence.

We  are  subject  to  stringent  privacy  laws,  information  security  policies  and  contractual  obligations 
governing  the  use,  processing  and  transfer  of  personal  information,  and  any  unauthorized  access  to,  or 
disclosure or theft of, personal information we gather, store or use could harm our reputation and subject 
us to claims or litigation.

We receive, store and use certain personal information of our customers, and the end-users of our customers’ 
energy  systems,  including  names,  addresses,  e-mail  addresses,  energy  system  details  and  performance 
information. We also store and use personal information of our employees. We take steps to protect the security, 
integrity and confidentiality of the personal information we collect, store and transmit, but there is no guarantee that 
inadvertent or unauthorized use or disclosure will not occur or that third parties will not gain unauthorized access to 
this information despite our efforts. Because techniques used to obtain unauthorized access or sabotage systems 
change frequently and generally are not identified until they are launched against a target, we and our suppliers or 
vendors  may  be  unable  to  anticipate  these  techniques  or  to  implement  adequate  preventative  or  mitigation 
measures.

We are subject to a variety of local, state, national and international laws, directives and regulations that apply 
to the collection, use, retention, protection, disclosure, transfer and other processing of personal data in the different 
jurisdictions in which we operate, including comprehensive regulatory systems in the United States and Europe. The 
United States has five new state privacy laws coming into effect in 2023, Europe continues to enforce the General 
Data  Protection  Regulation,  and  countless  other  jurisdictions  in  which  we  operate  or  have  customers  with  energy 
systems similarly have privacy regulations or laws. It remains unclear what additional requirements will be codified 
in future laws, how those laws will be enforced, and how these legal shifts impact our operations and risk. We may 
be  required  to  modify  our  data  practices  and  policies,  at  potentially  substantial  additional  costs  and  expenses. 
Complying with these forthcoming and future laws, regulations, amendments to or re-interpretations of existing laws 
and  regulations,  and  contractual  or  other  obligations  relating  to  privacy,  data  protection,  data  transfers,  data 

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localization, or information security may require us to make changes to our services to enable us or our customers 
to  meet  new  legal  requirements,  incur  substantial  operational  costs,  modify  our  data  practices  and  policies,  and 
restrict  our  business  operations.  Additionally,  certain  privacy  and  other  laws  impose  obligations  to  provide 
notification  of  security  breaches  of  computer  databases  that  contain  personal  information  to  affected  individuals, 
state  officers  and  others.  Any  actual  or  perceived  failure  by  us  to  comply  with  these  laws,  regulations  or  other 
obligations  may  lead  to  significant  fines,  penalties,  regulatory  investigations,  lawsuits,  significant  costs  for 
remediation, damage to our reputation, or other liabilities.

If  we  fail  to  protect,  or  incur  significant  costs  in  enforcing,  our  intellectual  property  and  other  proprietary 
rights, our business and results of operations could be materially harmed.

Our  success  depends  to  a  significant  degree  on  our  ability  to  protect  our  intellectual  property  and  other 
proprietary  rights.  We  rely  on  a  combination  of  patent,  trademark,  copyright,  trade  secret  and  unfair  competition 
laws, as well as confidentiality and license agreements and other contractual provisions, to establish and protect our 
intellectual  property  and  other  proprietary  rights.  We  have  applied  for  patent  and  trademark  registrations  in  the 
United  States.  and  in  other  countries,  many  of  which  have  been  issued.  We  cannot  guarantee  that  any  of  our 
pending  applications  will  be  approved  or  that  our  existing  and  future  intellectual  property  rights  will  be  sufficiently 
broad to protect our proprietary technology, and any failure to obtain such approvals or finding that our intellectual 
property rights are invalid or unenforceable could force us to, among other things, rebrand or re-design our affected 
products. This includes an inherent risk that our registered or unregistered trademarks or trade names that we own 
or  use  may  be  challenged,  infringed,  circumvented,  declared  generic,  lapsed  or  determined  to  be  infringing  on  or 
dilutive of other marks, and that we may not be able to protect our rights, all of which may cause material adverse 
impact on our marketing abilities. Our patent protection depends on compliance with various required procedures, 
document submissions, fee payments, and other requirements imposed by national patent offices, and our patent 
protection could be reduced or eliminated for non-compliance with these requirements, despite our engagement of 
reputable law firms and other professionals to help us comply with such requirements. Even where we do comply 
with such requirements and enjoy the full length of patent protection, patent terms are finite in length – generally 20 
years from the earliest U.S. non-provisional priority filing date – which may be inadequate to protect our competitive 
position on our products. In countries where we have not applied for patent protection or where effective intellectual 
property protection is not available to the same extent as in the U.S., we may be at greater risk that our proprietary 
rights will be misappropriated, infringed or otherwise violated.

To protect our unregistered intellectual property, including our trade secrets and know-how, we rely in part on 
trade  secret  laws  and  confidentiality  and  invention  assignment  agreements  with  our  employees  and  independent 
contractors.  We  also  require  other  third  parties  who  may  have  access  to  our  proprietary  technologies  and 
information to enter into non-disclosure agreements. Such measures, however, provide only limited protection, and 
we cannot assure that our confidentiality and non-disclosure agreements will prevent unauthorized disclosure or use 
of our confidential information, especially after our employees or third parties end their employment or engagement 
with us, or provide us with an adequate remedy in the event of such disclosure. Furthermore, competitors or other 
third  parties  may  independently  discover  our  trade  secrets,  copy  or  reverse  engineer  our  products  or  portions 
thereof, or develop similar technology. If we fail to protect our intellectual property and other proprietary rights, or if 
such intellectual property and proprietary rights are infringed, misappropriated or otherwise violated, our business, 
results of operations or financial condition could be materially harmed.

In  the  future,  we  may  need  to  take  legal  action  to  prevent  third  parties  from  infringing  upon  or 
misappropriating  our  intellectual  property  or  from  otherwise  gaining  access  to  our  technology.  Protecting  and 
enforcing our intellectual property rights and determining their validity and scope could result in significant litigation 
costs  and  require  significant  time  and  attention  from  our  technical  and  management  personnel,  which  could 
significantly  harm  our  business.  In  addition,  we  may  not  prevail  in  such  proceedings. An  adverse  outcome  of  any 
such proceeding may reduce our competitive advantage or otherwise harm our financial condition and our business.

We  may  be  subject  to  disruptions  or  failures 
infrastructures that could have a material adverse effect on our business and financial condition.

information  technology  systems  and  network 

in 

We rely on the efficient and uninterrupted operation of complex information technology systems and network 
infrastructures to operate our business. In addition, our web-based monitoring service, which our installers and end-
user  customers  use  to  track  and  monitor  the  performance  of  their  energy  systems,  is  dependent  on  cloud-based 
hosting services, along with the availability of WiFi or mobile data services at end-user premises. Despite testing by 
us, real or perceived errors, failures or bugs in our customer solutions, software or technology or the technology or 

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software we license from third parties, including open source software, may not be found until our customers use 
our products. Real or perceived errors, failures or bugs in our products could result in negative publicity, loss of or 
delay in market acceptance of our products, harm to our brand, weakening of our competitive position or claims by 
customers  for  losses  sustained  by  them. A  disruption,  infiltration  or  failure  of  our  information  technology  systems, 
third-party  cloud  hosting  platforms  or  end-user  data  services  as  a  result  of  software  or  hardware  malfunctions, 
system  implementations  or  upgrades,  computer  viruses,  cyber-attacks,  third-party  security  breaches,  employee/
human error, theft or misuse, malfeasance, power disruptions, natural disasters or accidents could cause breaches 
of  data  security,  failure  of  our  service,  loss  of  intellectual  property  and  critical  data  and  the  release  and 
misappropriation of sensitive competitive information and partner, customer and employee personal data. We have 
been and may in the future be subject to fraud attempts from outside parties through our electronic systems (such 
as  “phishing”  e-mail  communications  to  our  finance,  technical  or  other  personnel),  which  could  put  us  at  risk  for 
harm from fraud, theft or other loss if our internal controls do not operate as intended. Any such future events could 
further harm our competitive position, result in a loss of customer confidence, cause us to incur significant costs to 
remedy any damages and ultimately materially adversely affect our business and financial condition.

Third  parties  may  assert  that  we  are  infringing  upon  their  intellectual  property  rights,  which  could  divert 
management’s  attention,  cause  us  to  incur  significant  costs,  and  prevent  us  from  selling  or  using  the 
technology to which such rights relate.

Our competitors and other third parties hold numerous patents related to technology used in our industry, and 
claims  of  patent  or  other  intellectual  property  right  infringement  or  violation  have  been  litigated  against  our 
competitors.  We  may  also  be  subject  to  such  claims  and  litigation.  Regardless  of  their  merit,  responding  to  such 
claims can be time consuming, divert management’s attention and resources, and may cause us to incur significant 
expenses. While we believe that our products and technology do not infringe upon any intellectual property rights of 
third parties, we cannot be certain that we would be successful in defending against any such claims. Furthermore, 
patent applications in the United States and most other countries are confidential for a period of time before being 
published, so we cannot be certain that we are not infringing third parties’ patent rights or that we were the first to 
conceive or protect inventions covered by our patents or patent applications. An adverse outcome with respect to 
any intellectual property claim could invalidate our proprietary rights and force us to do one or more of the following:

•

•

•

•

•

obtain from a third-party claiming infringement a license to sell or use the relevant technology, which may 
not be available on reasonable terms, or at all; 

stop  manufacturing,  selling,  incorporating  or  using  products  that  embody  the  asserted  intellectual 
property; 

pay substantial monetary damages; 

indemnify our customers under some of our customer contracts; or 

expend significant resources to redesign the products that use the infringing technology, or to develop or 
acquire non-infringing technology. 

Any of these actions could result in a substantial reduction in our revenue and could result in losses over an 

extended period of time.

Our failure to obtain the right to use necessary third-party intellectual property rights on reasonable terms, 
or our failure to maintain, and comply with the terms and conditions applicable to these rights, could harm 
our business and prospects.

We  have  licensed,  and  in  the  future  we  may  choose  or  be  required  to  license,  technology  or  intellectual 
property  from  third  parties  in  connection  with  the  development  and  marketing  of  our  products.  We  cannot  assure 
you that such licenses will be available to us on commercially reasonable terms, or at all, and our inability to obtain 
such licenses could require us to substitute technology of lower quality or of greater cost. 

Further,  such  licenses  may  be  non-exclusive,  which  could  result  in  our  competitors  gaining  access  to  the 
same intellectual property. The licensing or acquisition of third-party intellectual property rights is a competitive area, 
and other established companies may pursue strategies to license or acquire third-party intellectual property rights 
that  we  may  consider  attractive  or  necessary.  These  established  companies  may  have  a  competitive  advantage 
over  us  due  to  their  size,  capital  resources  or  greater  development  or  commercialization  capabilities.  In  addition, 
companies  that  perceive  us  to  be  a  competitor  may  be  unwilling  to  assign  or  license  rights  to  us.  We  could 
encounter  delays  and  incur  significant  costs,  in  product  or  service  introductions  while  we  attempt  to  develop 

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alternative  products  or  services,  or  redesign  our  products  or  services,  to  avoid  infringing  third-party  patents  or 
proprietary  rights.  Failure  to  obtain  any  such  licenses  or  to  develop  a  workaround  could  prevent  us  from 
commercializing products or services, and the prohibition of sale or the threat of the prohibition of sale of any of our 
products or services could materially affect our business and our ability to gain market acceptance for our products 
or services.

In  addition,  we  incorporate  open  source  software  code  in  our  proprietary  software.  Use  of  open  source 
software  can  lead  to  greater  risks  than  use  of  third-party  commercial  software,  since  open  source  licensors 
generally do not provide warranties or controls with respect to origin, functionality or other features of the software. 
Further, companies that incorporate open source software into their products have, from time to time, faced claims 
challenging their use of open source software and compliance with open source license terms. As a result, we could 
be  subject  to  lawsuits  by  parties  claiming  ownership  of  what  we  believe  to  be  open  source  software  or  claiming 
noncompliance with open source licensing terms. Some open source software licenses require users who distribute 
open source software as part of their products to publicly disclose all or part of the source code in their software and 
make any derivative works of the open source code available for limited fees or at no cost. Although we monitor our 
use of open source software, open source license terms may be ambiguous, and many of the risks associated with 
the use of open source software cannot be eliminated. If we were found to have inappropriately used open source 
software, we may be required to release our proprietary source code, re-engineer our software, discontinue the sale 
of  certain  products  in  the  event  re-engineering  cannot  be  accomplished  on  a  timely  basis,  or  take  other  remedial 
action.  Furthermore,  if  we  are  unable  to  obtain  or  maintain  licenses  from  third  parties  or  fail  to  comply  with  open 
source licenses, we may be subject to costly third-party claims of intellectual property infringement or ownership of 
our  proprietary  source  code.  There  is  little  legal  precedent  in  this  area  and  any  actual  or  claimed  requirement  to 
disclose our proprietary source code or pay damages for breach of contract could harm our business and could help 
third parties, including our competitors, develop products and services that are similar to or better than ours. Any of 
the above could harm our business and put us at a competitive disadvantage.

Risks related to Legal Proceedings and Regulations

Changes in current laws or regulations or the imposition of new laws or regulations, or new interpretations 
thereof, in the solar energy sector, by federal or state agencies in the United States or foreign jurisdictions 
could impair our ability to compete and could materially harm our business, financial condition and results 
of operations.

There  has  been  and  will  continue  to  be  regulatory  uncertainty  in  the  clean  energy  sector  generally  and  the 
solar  energy  sector  in  particular.  Changes  in  current  laws  or  regulations,  or  the  imposition  of  new  laws  and 
regulations in the United States and around the world, could materially and adversely affect our business, financial 
condition and results of operations. In addition, any changes to the laws and implementing regulations affecting the 
clean energy sector may create delays in the introduction of new products, prevent our customers from deploying 
our products or, in some cases, require us to redesign our products.

For example, several states or territories, including California, Hawaii and Queensland, Australia, have either 
implemented or are considering implementing rules regulating the installation of solar power systems, and we may 
not  be  able  to  adequately  evolve  our  products  and  services  to  accommodate  such  new  policies  and  regulations, 
which may result in new rates and tariffs. In the event that we cannot comply with these or other new regulations or 
implement  a  solution  to  such  noncompliance  as  they  arise,  the  total  market  available  for  our  microinverter  and 
battery products in such states, and our business as a result, may be adversely impacted.

Additionally,  if  the  federal  or  state  agencies  in  the  United  States  takes  action  to  eliminate  or  reduce  laws, 
regulations  and  incentives  supporting  solar  energy,  such  actions  may  result  in  a  decrease  in  demand  for  solar 
energy  in  the  United  States  and  other  geographical  markets,  it  would  harm  our  business,  financial  condition  and 
results of operations.

Changes  in  the  United  States  trade  environment,  including  the  recent  imposition  of  import  tariffs,  could 
adversely affect the amount or timing of our revenues, results of operations or cash flows.

Escalating  trade  tensions  between  the  U.S.  and  China  have  led  to  increased  tariffs  and  trade  restrictions, 
including tariffs applicable to certain of our products. For example, in September 2018, the U.S. began assessing 
10%  tariffs  on  certain  solar  products  manufactured  in  China,  including  our  microinverter  products  and  related 
accessories which are manufactured in China. These tariffs increased to 25% in May 2019, and on January 2020, 

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the United States and China entered into an initial trade deal which preserves the bulk of the tariffs imposed in 2018 
and maintains a threat of additional sanctions should China breach the terms of the deal. 

However, in March 2020, the Office of the U.S. Trade Representative announced certain exclusion requests 
related  to  tariffs  on  Chinese  imported  microinverter  products  that  fit  the  dimensions  and  weight  limits  within  a 
Section 301 Tariff exclusion (the “Tariff Exclusion”). The Tariff Exclusion applied to covered products exported from 
China  to  the  United  States  from  September  24,  2018  until August  7,  2020. Accordingly,  we  sought  and  received 
refunds  totaling  approximately  $38.9  million  plus  approximately  $0.6  million  accrued  interest  on  tariffs  previously 
paid from September 24, 2018 to March 31, 2020 for certain microinverters that qualify for the Tariff Exclusion. This 
exemption expired in August 2020, and our request to extend it has been denied. Unless U.S. policy changes, or we 
are  eligible  for  other  exemptions  or  take  other  actions  to  avoid  them,  such  tariffs  will  continue  to  apply  to  our 
microinverters and other products. Such tariffs could hurt the demand for these products and materially harm our 
business, financial condition and results of operations. There is no guarantee that we will be successful in obtaining 
exemptions or that any actions that we may pursue with respect to the organization and operation of our business 
will effectively mitigate the effects of any tariffs that apply to our business. If we are not able to avoid or mitigate the 
effects of such tariffs, the tariffs (or mitigating actions we might take) could result in material additional costs to us 
and our suppliers, and our results of operations could be negatively impacted as a result. 

It  is  unknown  whether  and  to  what  extent  additional  new  tariffs  or  other  new  laws  or  regulations  will  be 
adopted  that  increase  the  cost  of  manufacturing  in  China  and/or  importing  components  from  China  to  the  United 
States.  Further,  it  is  unknown  what  effect  that  any  such  new  tariffs  or  retaliatory  actions  would  have  on  us  or  our 
industry and customers. Our lithium-ion phosphate (“LFP”) battery cells for our storage products are supplied solely 
via our two suppliers in China. Although we are in the process of searching for other suppliers outside of China for 
future supplies, the expertise and industry for the LFP battery cell is primarily in China and we cannot be certain that 
we will locate additional qualified suppliers with the right expertise to develop our battery cells outside of China, if at 
all.

In  response  to  the  tensions  in  US-China  trade  relations  and  increased  tariffs,  we  focused  efforts  and 
resources on attaining manufacturers outside of China, primarily in Mexico and India. The tariffs and the possibility 
of additional tariffs in the future have created uncertainty in the industry. If the price of solar power systems in the 
United States increases, the use of solar power systems could become less economically feasible and could reduce 
our  gross  margins  or  reduce  the  demand  of  solar  power  systems  manufactured  and  sold,  which  in  turn  may 
decrease  demand  for  our  products.  Additionally,  existing  or  future  tariffs  may  negatively  affect  key  partners, 
suppliers, and manufacturers. Such outcomes could adversely affect the amount or timing of our revenues, results 
of  operations  or  cash  flows,  and  continuing  uncertainty  could  cause  sales  volatility,  price  fluctuations  or  supply 
shortages or cause our customers to advance or delay their purchase of our products. It is difficult to predict what 
further  trade-related  actions  governments  may  take,  which  may  include  additional  or  increased  tariffs  and  trade 
restrictions,  and  we  may  be  unable  to  quickly  and  effectively  react  to  such  actions.  As  additional  new  tariffs, 
legislation and/or regulations are implemented, or if existing trade agreements are renegotiated or if China or other 
affected  countries  take  retaliatory  trade  actions,  such  changes  could  have  a  material  adverse  effect  on  our 
business, financial condition, results of operations or cash flows.

In addition, while we are not aware of any other current or proposed export or import regulations that would 
materially  restrict  our  ability  to  sell  our  products  in  countries  where  we  offer  our  products  for  sale,  any  change  in 
export  or  import  regulations  or  related  legislation,  shift  in  approach  to  the  enforcement  or  scope  of  existing 
regulations,  or  change  in  the  countries,  persons  or  technologies  targeted  by  these  regulations,  could  result  in 
decreased use of our products by, or in our decreased ability to export or sell our products to, existing or potential 
customers with international operations. In such event, our business and results of operations could be adversely 
affected.

Our  significant  international  operations  subject  us  to  additional  risks  that  could  adversely  affect  our 
business, results of operations and financial condition.

We  have  significant  international  operations,  including  in  emerging  markets  such  as  India,  and  we  are 
continuing  to  expand  our  international  operations  as  part  of  our  growth  strategy.  As  of  December  31,  2022, 
approximately  50%  of  our  total  employees  were  located  in  India,  where  we  primarily  conduct  our  research  and 
development  activities,  procurement,  customer  support  services,  and  other  general  and  administrative  support 
functions. 

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In  addition,  during  2022,  we  continued  to  expand  our  operations  into  Europe  and  for  the  year  ended 
December  31,  2022  approximately  19%  of  our  revenue  was  derived  from  Europe  as  compared  to  approximately 
14%  of  our  revenue  from  the  same  region  for  the  year  ended  December  31,  2021.  Our  current  international 
operations and our ongoing plans to expand our international operations have placed, and will continue to place, a 
strain on our employees, management systems and other resources. 

Our international operations may fail to succeed due to risks inherent in operating businesses internationally, 

such as:

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adverse social, political and economic conditions, such as inflation and rising interest rates;

our  lack  of  familiarity  with  commercial  and  social  norms  and  customs  in  countries  which  may  adversely 
affect our ability to recruit, retain and manage employees in these countries;

difficulties and costs associated with staffing and managing foreign operations;

the potential diversion of management’s attention to oversee and direct operations that are geographically 
distant from our U.S. headquarters;

compliance  with  multiple,  conflicting  and  changing  governmental  laws  and  regulations,  including 
employment, tax, privacy and data protection laws and other regulatory requirements;

legal systems in which our ability to enforce and protect our rights may be different or less effective than 
in the United States and in which the ultimate result of dispute resolution is more difficult to predict;

difficulty and cost of staffing and managing foreign operations;

tariffs, export controls and other non-tariff barriers such as quotas and local content rules;

• more limited protection for intellectual property rights in some countries;

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adverse  tax  consequences,  including  as  a  result  of  transfer  pricing  adjustments  involving  our  foreign 
operations;

effects of adverse changes in currency exchange rates;

higher incidence of corruption or unethical business practices;

restrictions on the transfer of funds;

natural  disasters  (including  as  a  result  of  climate  change),  acts  of  war  or  terrorism,  and  public  health 
emergencies, including the COVID-19 pandemic; and 

uncertain economic, legal and political conditions in Europe, Asia and other regions where we do 
business, including, for example, as a result of the ongoing military conflict between Russia and Ukraine 
and changes in China-Taiwan and U.S.-China relations.

The  success  of  our  international  sales  and  operations  will  depend,  in  large  part,  on  our  ability  to  anticipate 
and  manage  these  risks  effectively.  Our  failure  to  manage  any  of  these  risks  could  harm  our  international 
operations, reduce our international sales, and could give rise to liabilities, costs or other business difficulties that 
could adversely affect our operations and financial results.

We could be adversely affected by any violations of the FCPA, the U.K. Bribery Act, and other foreign anti-
bribery laws.

The  U.S.  FCPA  generally  prohibits  companies  and  their  intermediaries  from  making  improper  payments  to 
non-U.S.  government  officials  for  the  purpose  of  obtaining  or  retaining  business.  Other  countries  in  which  we 
operate also have anti-bribery laws, some of which prohibit improper payments to government and non-government 
persons  and  entities,  and  others  (e.g.,  the  FCPA  and  the  U.K.  Bribery  Act)  extend  their  application  to  activities 
outside of their country of origin. Our policies mandate compliance with all applicable anti-bribery laws. We currently 
operate in, and may further expand into, key parts of the world that have experienced governmental corruption to 
some degree and, in certain circumstances, strict compliance with anti-bribery laws may conflict with local customs 
and  practices.  In  addition,  due  to  the  level  of  regulation  in  our  industry,  our  entry  into  new  jurisdictions  through 
internal growth or acquisitions requires substantial government contact where norms can differ from U.S. standards. 
Additionally, the costs of complying with these laws (including the costs of investigations, auditing, and monitoring) 
could adversely affect our current or future business. Although, we implement policies and procedures and conduct 

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training  designed  to  facilitate  compliance  with  these  anti-bribery  laws,  thereby  mitigating  the  risk  of  violations  of 
such  laws,  our  employees,  subcontractors,  agents  and  partners  may  take  actions  in  violation  of  our  policies  and 
anti-bribery laws. Any such violation, even if prohibited by our policies, could subject us to criminal or civil penalties 
or other sanctions, which could have a material adverse effect on our business, financial condition, cash flows, and 
reputation.

From  time  to  time  we  are  involved  in  a  number  of  legal  proceedings  and,  while  we  cannot  predict  the 
outcomes  of  such  proceedings  and  other  contingencies  with  certainty,  some  of  these  outcomes  could 
adversely affect our business and financial condition.

We  are,  or  may  become,  involved  in  legal  proceedings,  government  and  agency  investigations,  and 
consumer,  employment,  tort  and  other  litigation.  We  cannot  predict  with  certainty  the  outcomes  of  these  legal 
proceedings. The outcome of these legal proceeding could require us to take, or refrain from taking, actions which 
could negatively affect our operations or could require us to pay substantial amounts of money adversely affecting 
our financial condition and results of operations. There can also be no assurance that we are adequately insured to 
protect against all claims and potential liabilities. Additionally, defending against lawsuits and legal proceedings may 
involve significant expense and could divert the attention of our key personnel.

Risks Related to our Financial Condition and Liquidity

Our gross profit may fluctuate over time, which could impair our ability to achieve or maintain profitability.

Our gross profit has varied in the past and is likely to continue to vary significantly from period to period. Our 

gross profit may be adversely affected by numerous factors, some of which are beyond our control, including:

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changes in customer, geographic or product mix; 

increased price competition, including the impact of customer and competitor discounts and rebates; 

our ability to reduce and control product costs, including our ability to make product cost reductions in a 
timely manner to offset declines in our product prices; 

warranty costs and reserves, including changes resulting from changes in estimates related to the long-
term  performance  of  our  products,  product  replacement  costs  and  warranty  claim  rates,  as  well  as 
changes in the discount rates; 

loss  of  cost  savings  due  to  changes  in  component  or  raw  material  pricing  or  charges  incurred  due  to 
inventory holding periods if product demand is not correctly anticipated; 

introduction of new products;

ordering patterns from our distributors; 

price reductions on older products to sell remaining inventory; 

component shortages and related expedited shipping costs;

our  ability  to  reduce  production  costs,  such  as  through  technology  innovations,  in  order  to  offset  price 
declines in our products over time; 

changes in shipment volume; 

changes in distribution channels; 

excess and obsolete inventory and inventory holding charges; 

expediting costs incurred to meet customer delivery requirements; 

the impact of inflation;

tariffs assessed on our products imported to the U.S. and elsewhere; and

fluctuations in foreign currency exchange rates. 

Fluctuations  in  gross  profit  may  adversely  affect  our  ability  to  manage  our  business  or  achieve  or  maintain 

profitability.

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We are under continuous pressure to reduce the prices of our products, which has adversely affected, and 
may continue to adversely affect, our gross margins.

The solar power industry has been characterized by declining product prices over time. We have reduced the 
prices of our products in the past, and we expect to continue to experience pricing pressure for our products in the 
future,  including  from  our  major  customers.  In  addition,  we  have  reduced  our  prices  ahead  of  planned  cost 
reductions of our products, which has adversely affected our gross margins. When seeking to maintain or increase 
their  market  share,  our  competitors  may  also  reduce  the  prices  of  their  products.  In  addition,  our  customers  may 
have the ability or seek to internally develop and manufacture competing products at a lower cost than we would 
otherwise charge, which would add additional pressure on us to lower our selling prices. If we are unable to offset 
any future reductions in our average selling prices by increasing our sales volume, reducing our costs and expenses 
or introducing new products, our gross margins would continue to be adversely affected.

Given  the  general  downward  pressure  on  prices  for  our  products  driven  by  competitive  pressure  and 
technological  change,  a  principal  component  of  our  business  strategy  is  reducing  the  costs  to  manufacture  our 
products to remain competitive. If our competitors are able to drive down their manufacturing costs faster than we 
can or increase the efficiency of their products, our products may become less competitive even when adjusted for 
efficiency, and we may be forced to sell our products at a price lower than our cost. Further, if raw materials costs 
and other third-party component costs were to increase, we may not meet our cost reduction targets. If we cannot 
effectively execute our cost reduction roadmap, we may not be able to remain price competitive, which would result 
in lost market share and lower gross margins.

A drop in the retail price of electricity derived from the utility grid or from alternative energy sources, or a 
change in utility pricing structures, may harm our business, financial condition and results of operations.

We believe that a system owner’s decision to purchase a solar PV system is strongly influenced by the cost of 
electricity generated by solar PV installations relative to the retail price of electricity from the utility grid and the cost 
of  other  renewable  energy  sources,  including  electricity  from  solar  PV  installations  using  central  inverters. 
Decreases in the retail prices of electricity from the utility grid would make it more difficult for all solar PV systems to 
compete. In particular, growth in unconventional natural gas production and an increase in global liquefied natural 
gas capacity are expected to keep natural gas prices relatively low for the foreseeable future. Persistent low natural 
gas  prices,  lower  prices  of  electricity  produced  from  other  energy  sources,  such  as  nuclear  power  or  coal-fired 
plants,  or  improvements  to  the  utility  infrastructure  could  reduce  the  retail  price  of  electricity  from  the  utility  grid, 
making  the  purchase  of  solar  PV  systems  less  economically  attractive  and  depressing  sales  of  our  products.  In 
addition, energy conservation technologies and public initiatives to reduce demand for electricity also could cause a 
fall in the retail price of electricity from the utility grid. 

Moreover,  technological  developments  by  our  competitors  in  the  solar  industry,  including  manufacturers  of 
central inverters and DC-to-DC optimizers, could allow these competitors or their partners to offer electricity at costs 
lower than those that can be achieved from solar PV installations based on our product platform, which could result 
in reduced demand for our products. Additionally, as increasing adoption of distributed generation places pressure 
on traditional utility business models or utility infrastructure, utilities may change their pricing structures to increase 
the  cost  of  installation  or  operation  of  solar  distributed  generation.  Such  measures  can  include  grid  access  fees, 
costly or lengthy interconnection studies, limitations on distributed generation penetration levels, or other measures. 
If the cost of electricity generated by solar PV installations incorporating our solutions is high relative to the cost of 
electricity from other sources, our business, financial condition and results of operations may be harmed.

If we do not forecast demand for our products accurately, we may experience product shortages, delays in 
product  shipment,  excess  product  inventory,  difficulties  in  planning  expenses  or  disputes  with  suppliers, 
any of which will adversely affect our business and financial condition.

We  manufacture  our  products  according  to  our  estimates  of  customer  demand. This  process  requires  us  to 
make  multiple  forecasts  and  assumptions  relating  to  the  demand  of  our  distributors,  their  end  customers  and 
general  market  conditions.  Because  we  sell  most  of  our  products  to  distributors,  who  in  turn  sell  to  their  end 
customers,  we  have  limited  visibility  as  to  end-customer  demand.  We  depend  significantly  on  our  distributors  to 
provide  us  visibility  into  their  end-customer  demand,  and  we  use  these  forecasts  to  make  our  own  forecasts  and 
planning decisions. If the information from our distributors turns out to be incorrect, then our own forecasts may also 
be  inaccurate.  Furthermore,  we  do  not  have  long-term  purchase  commitments  from  our  distributors  or  end 
customers,  and  our  sales  are  generally  made  by  purchase  orders  that  may  be  canceled,  changed  or  deferred 
without notice to us or penalty. As a result, it is difficult to forecast future customer demand to plan our operations.

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If we overestimate demand for our products, or if purchase orders are canceled or shipments are delayed, we 
may  have  excess  inventory  that  we  cannot  sell.  We  may  have  to  make  significant  provisions  for  inventory  write-
downs  based  on  events  that  are  currently  not  known,  and  such  provisions  or  any  adjustments  to  such  provisions 
could be material. We may also become involved in disputes with our suppliers who may claim that we failed to fulfill 
forecast or minimum purchase requirements. Conversely, if we underestimate demand, we may not have sufficient 
inventory to meet end-customer demand, and we may lose market share, damage relationships with our distributors 
and  end  customers  and  forgo  potential  revenue  opportunities.  Obtaining  additional  supply  in  the  face  of  product 
shortages  may  be  costly  or  impossible,  particularly  in  light  of  supply  chain  disruptions  and  our  outsourced 
manufacturing processes, which could prevent us from fulfilling orders in a timely and cost-efficient manner or at all. 
In  addition,  if  we  overestimate  our  production  requirements,  our  contract  manufacturers  may  purchase  excess 
components and build excess inventory. If our contract manufacturers, at our request, purchase excess components 
that are unique to our products and are unable to recoup the costs of such excess through resale or return or build 
excess products, we could be required to pay for these excess parts or products and recognize related inventory 
write-downs.

In addition, we plan our operating expenses, including research and development expenses, hiring needs and 
inventory  investments,  in  part  on  our  estimates  of  customer  demand  and  future  revenue.  If  customer  demand  or 
revenue  for  a  particular  period  is  lower  than  we  expect,  we  may  not  be  able  to  proportionately  reduce  our  fixed 
operating expenses for that period, which would harm our operating results for that period.

Our  focus  on  a  limited  number  of  specific  markets  increases  risks  associated  with  the  modification, 
elimination  or  expiration  of  governmental  subsidies  and  economic  incentives  for  on-grid  solar  electricity 
applications.

To date, we have generated the majority of our revenues from North America, and revenues generated from 
the U.S. market represented 76%, 80% and 82% of our total revenue for the annual period ending on December 31, 
2022, 2021 and 2020, respectively. We also expect to continue to generate a substantial amount of our revenues 
from North America in the future.

There are a number of important incentives (including the ITC, AMPTC and other U.S. federal and state tax 
incentives),  that  impact  our  business.  Under  the  IRA,  the  ITC  was  extended  until  2032  to  allow  a  qualifying 
homeowner to deduct 30% of the cost of installing residential solar systems from their U.S. federal income taxes, 
thereby returning a material portion of the purchase price of the residential solar system to homeowners. Under the 
terms of the current extension, the ITC will remain at 30% through the end of 2032, reduce to 26% for 2033, reduce 
to 22% for 2034, and further reduce to 0.0% after the end of 2034 for residential solar systems, unless it is further 
extended before that time. The Internal Revenue Service has not provided guidance so there is still uncertainty on 
how the new tax rules will be applied. If the ITC, AMPTC or other tax credits are reduced or eliminated as part of 
futures  changes  to  the  U.S.  Internal  Revenue  Code,  changes  to  state  law  or  regulatory  reform  initiatives  by 
subsequent legislative action or by a presidential administration, sales of our products in North America and other 
markets could be adversely affected. In addition, if we develop plans to increase our manufacturing with third-party 
manufacturers in the United States in reliance of the incentives in the IRA, there is no guarantee that we will realize 
the benefits we currently expect in the future. 

In addition, net energy metering tariffs are being evaluated and, in some instances modified, which may have 
a  negative  impact  on  future  inverter  sales.  We  derive  a  significant  portion  of  our  revenues  from  California’s 
residential  solar  market  and  the  existing  California  net  energy  metering  tariff  has  been  very  successful  in 
incentivizing  the  installation  of  residential  solar  power  systems.  Future  legislative  or  regulatory  changes  in 
California, such as the current NEM 3.0 decision, may discourage further growth in the residential solar market.

A  number  of  European  countries,  including  Germany,  Belgium,  Italy  and  the  United  Kingdom  have  adopted 
reductions in or concluded their net energy metering or FiT programs. Certain countries have proposed or enacted 
taxes levied on renewable energy. These and related developments have significantly impacted the solar industry in 
Europe and may adversely affect the future demand for the solar energy solutions in Europe, which could adversely 
impact our results of operations.

We also sell our products in Australia. In 2012 Australia enacted a Renewable Energy Target that is intended 
to ensure that 33,000 Gigawatt-hours of Australia’s electricity comes from renewable sources by 2020. This policy 
supports  both  the  installation  of  large-scale  centralized  renewable  generation  projects,  along  with  small-scale 
systems of under 100kW each for residential and small business customers. This target was met in 2019; however, 
the  scheme  continues  to  require  high-energy  users  to  meet  their  obligations  under  the  policy  until  2030.  During 

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2018,  the  states  of  Victoria  and  South  Australia  introduced  state-based  incentive  schemes,  aimed  at  solar 
customers  in  the  state  of  Victoria  and  battery  storage  in  the  state  of  South Australia.  Other Australian  states  and 
territories  introduced  similar  programs  in  2019.  Any  change  in,  or  failure  to  implement,  these  programs  may 
adversely affect the demand for solar energy solutions in Australia.

U.S. federal and state tax credits, grants and other incentive programs have had a positive effect on our sales 
since inception. However, unless these programs are further extended or modified to allow for continued growth in 
the  residential  solar  market,  the  phase-out  of  such  programs  could  adversely  affect  sales  of  our  products  in  the 
future. Reductions in incentives and uncertainty around future energy policy, including local content requirements, 
have  negatively  affected  and  may  continue  to  negatively  affect  our  business,  financial  condition,  and  results  of 
operations as we seek to increase our business domestically and abroad. Additionally, as we further expand to other 
countries, changes in incentive programs or electricity policies could negatively affect returns on our investments in 
those countries as well as our business, financial condition, and results of operations.

Our portfolio of marketable securities is subject to market, interest and credit risk that may reduce its value.

As  of  December  31,  2022,  we  had  approximately  $1,139.6  million  in  debt  security  investments.  These 
investments  consisted  primarily  of  money  market  funds,  U.S. Treasuries,  U.S.  government  securities,  commercial 
paper  and  debt  securities  of  corporations.  We  currently  do  not  use  derivative  financial  instruments  to  adjust  our 
investment portfolio risk or income profile. These investments, as well as any cash deposited in bank accounts, are 
subject  to  general  credit,  liquidity,  market  and  interest  rate  risks,  which  may  be  exacerbated  by  unusual  events, 
such  as  the  COVID-19  pandemic  and  the  U.S.  debt  ceiling  crisis,  which  affected  various  sectors  of  the  financial 
markets and led to global credit and liquidity issues. If the global credit market continues to experience volatility or 
deteriorates, our investment portfolio may be impacted and some or all of our investments may experience other-
than-temporary impairment, which could adversely impact our operating results and position.

Risks Related to our Acquisition Activity

As part of growing our business, we have made and expect to continue to make acquisitions. If we fail to 
successfully select, execute or integrate our acquisitions, then our business and operating results could be 
harmed and our stock price could decline.

From time to time, we will undertake acquisitions to add new product lines and technologies, gain new sales 
channels or enter new sales territories. For example, in 2021, we acquired Sofdesk, the solar design business of 
DIN,  365  Pronto,  and  ClipperCreek,  and  in  2022,  we  acquired  SolarLeadFactory  and  GreenCom.  Acquisitions 
involve numerous risks and challenges, including but not limited to the following:

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integrating the companies, assets, systems, products, sales channels and personnel that we acquire;

higher than anticipated acquisition and integration costs and expenses;

reliance on third parties to provide transition services for a period of time after closing to ensure an orderly 
transition of the business;

growing or maintaining revenues to justify the purchase price and the increased expenses associated with 
acquisitions;
entering into territories or markets with which we have limited or no prior experience;

establishing or maintaining business relationships with customers, vendors and suppliers who may be new 
to us;

overcoming the employee, customer, vendor and supplier turnover that may occur as a result of the 
acquisition;

disruption of, and demands on, our ongoing business as a result of integration activities including diversion 
of management's time and attention from running the day to day operations of our business;

inability to implement uniform standards, disclosure controls and procedures, internal controls over financial 
reporting and other procedures and policies in a timely manner;
inability to realize the anticipated benefits of or successfully integrate with our existing business the 
businesses, products, technologies or personnel that we acquire; and

potential post-closing disputes.

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As  part  of  undertaking  an  acquisition,  we  may  also  significantly  revise  our  capital  structure  or  operational 
budget, such as issuing common stock that would dilute the ownership percentage of our stockholders, assuming 
liabilities  or  debt,  utilizing  a  substantial  portion  of  our  cash  resources  to  pay  for  the  acquisition  or  significantly 
increasing operating expenses. Our acquisitions have resulted and may in the future result in charges being taken 
in an individual quarter as well as future periods, which results in variability in our quarterly earnings. In addition, our 
effective  tax  rate  in  any  particular  quarter  may  also  be  impacted  by  acquisitions.  Following  the  closing  of  an 
acquisition, we may also have disputes with the seller regarding contractual requirements and covenants, purchase 
price adjustments, contingent payments or for indemnifiable losses. Any such disputes may be time consuming and 
distract management from other aspects of our business. In addition, if we increase the pace or size of acquisitions, 
we will have to expend significant management time and effort into the transactions and integrations, and we may 
not  have  the  proper  human  resources  bandwidth  to  ensure  successful  integrations  and  accordingly,  our  business 
could be harmed or the benefits of our acquisitions may not be realized.

As  part  of  the  terms  of  an  acquisition,  we  may  commit  to  pay  additional  contingent  consideration  if  certain 
revenue or other performance milestones are met. We are required to evaluate the fair value of such commitments 
at each reporting date and adjust the amount recorded if there are changes to the fair value.

We  cannot  ensure  that  we  will  be  successful  in  selecting,  executing  and  integrating  acquisitions.  Failure  to 
manage  and  successfully  integrate  acquisitions  could  materially  harm  our  business  and  operating  results.  In 
addition, if stock market analysts or our stockholders do not support or believe in the value of the acquisitions that 
we choose to undertake, our stock price may decline.

We  invest  in  companies  for  both  strategic  and  financial  reasons  but  may  not  realize  a  return  on  our 
investments.

We  have  made,  and  continue  to  seek  to  make,  investments  in  companies  around  the  world  to  further  our 
strategic  objectives  and  support  our  key  business  initiatives.  These  investments  may  include  equity  or  debt 
instruments of public or private companies and may be non-marketable at the time of our initial investment. We do 
not  restrict  the  types  of  companies  in  which  we  seek  to  invest.  These  companies  may  range  from  early-stage 
companies that are often still defining their strategic direction to more mature companies with established revenue 
streams and business models. If any company in which we invest fails, we could lose all or part of our investment in 
that  company.  If  we  determine  that  an  other-than-temporary  decline  in  the  fair  value  exists  for  an  equity  or  debt 
investment in a public or private company in which we have invested, we will have to write down the investment to 
its  fair  value  and  recognize  the  related  write-down  as  an  investment  loss.  The  performance  of  any  of  these 
investments could result in significant impairment charges and gains (losses) on other equity investments. We must 
also analyze accounting and legal issues when making these investments. If we do not structure these investments 
properly, we may be subject to certain unfavorable accounting impact, such as potential consolidation of financial 
results.

Furthermore, if the strategic objectives of an investment have been achieved, or if the investment or business 
diverges  from  our  strategic  objectives,  we  may  seek  to  dispose  of  the  investment.  Our  non-marketable  equity 
investments  in  private  companies  are  not  liquid,  and  we  may  not  be  able  to  dispose  of  these  investments  on 
favorable terms or at all. The occurrence of any of these events could harm our results. Gains or losses from equity 
securities could vary from expectations depending on gains or losses realized on the sale or exchange of securities 
and impairment charges related to debt instruments as well as equity and other investments.

An impairment in the carrying value of goodwill or other intangible and long-lived assets could negatively 
affect our operating results.

We record goodwill from the purchase consideration paid in excess of the fair value of the net assets recorded 
in  connection  with  a  business  acquisition.  We  may  not  realize  all  the  economic  benefit  from  our  business 
acquisitions, which could result in an impairment of goodwill or intangible assets. As of December 31, 2022, goodwill 
and  intangible  assets,  net  were  approximately  $213.6  million  and  $99.5  million,  respectively.  We  test  goodwill  for 
impairment at least annually during the fourth quarter of each fiscal year or between annual tests if an event occurs 
or  circumstances  change  that  would  indicate  the  carrying  amount  may  be  impaired.  Goodwill  is  tested  at  the 
reporting  unit  level,  which  we  have  determined  to  be  the  same  as  the  entity  as  a  whole  (entity  level).  We  first 
perform a qualitative assessment to determine whether it is more likely than not that the fair value of our reporting 
unit is less than its carrying value. If, after assessing the qualitative factors, we determine that it is more likely than 
not that the fair value of our reporting unit is less than it’s carrying value, an impairment analysis will be performed.

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Qualitative  factors  include  industry  and  market  consideration,  overall  financial  performance,  share  price 
trends and market capitalization and company-specific events. We may be required to record a significant charge in 
our financial statements during the period in which any impairment of our goodwill or amortizable intangible assets 
is determined, which would negatively impact our operating results.

Risks Related to our Debt and Equity Securities

The  market  price  of  our  common  stock  may  be  volatile  or  may  decline  regardless  of  our  operating 
performance.

The  market  price  of  our  common  stock  has  been  and  could  be  subject  to  wide  fluctuations  in  response  to, 
among other things, the other risk factors described herein, and other factors beyond our control, such as quarterly 
variations in operating results, announcements of technology innovations or new products by us or our competitors, 
changes  in  financial  estimates,  negative  recommendations  by  securities  analysts,  the  operating  and  stock  price 
performance of other companies that investors may deem comparable to us, and new reports relating to trends in 
our  markets  or  general  economic  conditions. These  fluctuations  often  have  been  unrelated  or  disproportionate  to 
the  operating  performance  of  those  companies. These  broad  market  and  industry  fluctuations,  as  well  as  general 
economic,  political  and  market  conditions,  such  as  recessions,  interest  rate  changes,  inflation  or  international 
currency  fluctuations,  may  negatively  affect  the  market  price  of  our  common  stock,  regardless  of  our  operating 
performance.

In addition, the use of the Internet, social media, and blogging have allowed short sellers to publicly attack a 
company’s  credibility,  strategy  and  veracity  by  means  of  so-called  “research  reports”  that  mimic  the  type  of 
investment analysis performed by legitimate securities research analysts. These short attacks have in the past led 
to stock price declines and significant selling activity in our common stock.

Many  companies  that  have  experienced  volatility  in  the  market  price  of  their  stock  have  been  subject  to 
securities class action litigation. We have been in the past and may become the target of this type of litigation in the 
future. Securities litigation against us could result in substantial costs and divert our management’s attention from 
other business concerns, which could seriously harm our business.

Conversion  of  our  Convertible  Notes  may  dilute  the  ownership  interest  of  existing  stockholders  or  may 
otherwise  depress  the  price  of  our  common  stock,  adversely  affect  our  financial  condition  and  operating 
results.

In  March  2021,  we  issued  and  sold  a  total  of  $575.0  million  aggregate  principal  amount  of  our  0.0% 
convertible  senior  notes  due  2028  (the  “Notes  due  2028”)  and  $632.5  million  aggregate  principal  amount  of  our 
0.0% convertible senior notes due 2026 (the “Notes due 2026”).

In  March  2020,  we  issued  and  sold  a  total  of  $320.0  million  aggregate  principal  amount  of  our  0.25% 

convertible senior notes due 2025 (the “Notes due 2025”).

In  August  2018,  we  issued  and  sold  a  total  of  $65.0  million  aggregate  principal  amount  of  our  4.0% 
convertible senior notes due 2023 (the “Notes due 2023”) in a private placement to qualified institutional buyers and 
an  affiliate  of  ours.  In  May  2019,  we  entered  into  separately  and  privately  negotiated  transactions  with  certain 
holders  of  the  Notes  due  2023  resulting  in  the  repurchase  and  exchange  of  $60.0  million  aggregate  principal 
amount of the notes in consideration for the issuance of shares of common stock and separate cash payments. 

The  Conversion  Condition  for  the  Notes  due  2025  was  met  during  the  quarter  ended  December  31,  2022. 
Therefore,  the  Notes  due  2025  became  convertible  at  the  holders’  option  beginning  on  January  1,  2023  and 
continue to be convertible through March 31, 2023. Accordingly, we have classified the net carrying amount of the 
Notes due 2025 of $90.9 million as debt, current on the consolidated balance sheet as of December 31, 2022.

We may receive conversion requests that require settlement in the first quarter of 2023. If more holders elect 
to  convert  their  Notes  due  2025  in  future  periods,  we  intend  to  settle  all  or  a  portion  of  our  conversion  obligation 
related to the aggregate principal amount in cash, which could adversely affect our liquidity and result in a material 
adverse effect on our financial position, results of operations and cash flows. In addition, to the extent we receive 
conversion  requests,  we  may  also  record  a  loss  on  early  conversions  of  the  Notes  due  2025  converted  by  note 
holders based on the difference between the fair market value allocated to the liability component on the settlement 
date and the net carrying amount of the liability component and unamortized debt issuance on the settlement date.

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As of December 31, 2022 we have following Convertible Notes outstanding: 

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$575.0  million  aggregate  principal  amount  of  the  Notes  due  2028  were  outstanding;  (the  foregoing, 
collectively, the “2028 Convertible Notes”);

$632.5  million  aggregate  principal  amount  of  the  Notes  due  2026  were  outstanding;  (the  foregoing, 
collectively, the “2026 Convertible Notes”);

$102.2  million  aggregate  principal  amount  of  the  Notes  due  2025  were  outstanding;  (the  foregoing, 
collectively, the “2025 Convertible Notes”); and

$5.0  million  aggregate  principal  amount  of  the  Notes  due  2023  were  outstanding;  (the  foregoing, 
collectively, the “2023 Convertible Notes”, together with the 2028 Convertible Notes, the 2026 Convertible 
Notes and the 2025 Convertible Notes, the “Convertible Notes”).

The  conversion  of  some  or  all  of  the  Convertible  Notes  may  dilute  the  ownership  interests  of  existing 
stockholders. Any sales in the public market of the common stock issuable upon such conversion could adversely 
affect  prevailing  market  prices  of  our  common  stock.  In  addition,  the  existence  of  the  Convertible  Notes  may 
encourage short selling by market participants because the conversion of the Convertible Notes could be used to 
satisfy short positions. In addition, the anticipated conversion of the Convertible Notes into shares of our common 
stock could depress the price of our common stock.

Servicing our debts requires a significant amount of cash, and we may not have sufficient cash flow from 
our business to pay our debts.

Our  ability  to  make  scheduled  payments  of  the  principal  of,  to  pay  interest  on  or  to  refinance  our 
indebtedness, including the Convertible Notes, depends on our future performance, which is subject to economic, 
financial, competitive and other factors beyond our control. Our business may not continue to generate cash flow 
from operations in the future sufficient to service our debts, including the Convertible Notes, and make necessary 
capital expenditures. If we are unable to generate cash flow, we may be required to adopt one or more alternatives, 
such  as  selling  assets,  restructuring  debt  or  obtaining  additional  equity  capital  on  terms  that  may  be  onerous  or 
highly dilutive. Our ability to refinance our indebtedness, including the Convertible Notes, will depend on the capital 
markets and our financial condition at such time. We may not be able to engage in any of those activities or engage 
in  these  activities  on  desirable  terms,  which  could  result  in  a  default  on  our  debt  obligations,  including  our 
obligations under the Convertible Notes.

We may not have the ability to raise the funds necessary to settle conversions of the Convertible Notes or 
repurchase the Convertible Note upon a fundamental change, and our future debt may contain limitations 
on our ability to pay cash upon conversion or repurchase of the Convertible Notes.

Holders of our Convertible Notes will have the right to require us to repurchase their Convertible Notes upon 
the occurrence of a fundamental change at a fundamental change repurchase price equal to 100% of the principal 
amount of the Convertible Notes to be repurchased, plus accrued and unpaid interest, if any. Fundamental change 
is defined in the Convertible Notes Indenture entered into in connection with the financing and consists of events 
such  as  an  acquisition  of  a  majority  of  our  outstanding  common  stock,  an  acquisition  of  our  company  or 
substantially all of our assets, the approval by our stockholders of a plan of liquidation or dissolution, or our common 
stock no longer being listed on the Nasdaq Global Select Market or the Nasdaq Global Market. Upon conversion of 
the Convertible Notes, unless we elect to deliver solely shares of our common stock to settle such conversion (other 
than paying cash in lieu of delivering any fractional share), we will be required to make cash payments in respect of 
the  Convertible  Notes  being  converted.  However,  we  may  not  have  enough  available  cash  or  be  able  to  obtain 
financing at the time we are required to make such repurchase of the Convertible Notes. In addition, our ability to 
repurchase the Convertible Notes or to pay cash upon conversion of the Convertible Notes may be limited by law, 
by  regulatory  authority  or  by  agreements  governing  our  future  indebtedness.  Our  failure  to  repurchase  notes  at  a 
time when the repurchase is required by the relevant indenture or to pay any cash payable on future conversions of 
the  notes  as  required  by  the  relevant  indenture  would  constitute  a  default  under  the  relevant  indenture. A  default 
under  the  indenture  or  a  fundamental  change  itself  could  also  lead  to  a  default  under  agreements  governing  our 
future indebtedness. If the repayment of the related indebtedness were to be accelerated after any applicable notice 
or grace periods, we may not have sufficient funds to repay the indebtedness and repurchase the Convertible Notes 
or make cash payments upon conversion of the Convertible Notes.

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The convertible note hedge and warrant transactions and/or their early termination may affect the value of 
our common stock.

In connection with the offering of the Notes due 2028, Notes due 2026 and Notes due 2025, we entered into 
privately  negotiated  convertible  note  hedge  transactions  pursuant  to  which  we  have  the  option  to  purchase 
approximately the same number of shares of our common stock initially issuable upon conversion of the Notes due 
2028, Notes due 2026 and Notes due 2025, at a price approximately the same as the initial conversion price of the 
Notes  due  2028,  Notes  due  2026  and  Notes  due  2025.  These  transactions  are  expected  to  reduce  the  potential 
dilution with respect to our common stock upon conversion of the Notes due 2028, Notes due 2026 and Notes due 
2025.  Separately,  we  also  entered  into  privately  negotiated  warrant  transactions  to  acquire  the  same  number  of 
shares of our common stock initially issuable upon conversion of the Notes due 2028, Notes due 2026 and Notes 
due 2025 (subject to customary anti-dilution adjustments) at an initial strike price of approximately $370.33, $397.91 
and $106.94 per share for Notes due 2028, Notes due 2026 and Notes due 2025, respectively. If the market value 
per  share  of  our  common  stock,  as  measured  under  the  warrants,  exceeds  the  strike  price  of  the  warrants,  the 
warrants  will  have  a  dilutive  effect  on  the  ownership  interests  of  existing  stockholders  and  on  our  earnings  per 
share,  unless  we  elect,  subject  to  certain  conditions,  to  settle  the  warrants  in  cash.  However,  we  may  not  have 
enough available cash or be able to obtain financing at the time of settlement.

In addition, the existence of the convertible note hedge and warrant transactions may encourage purchasing 
and selling share of our common stock, or other of our securities and instruments, in open market and/or privately 
negotiated transactions in order to modify hedge positions. Any of these activities could adversely affect the value of 
our common stock and the value of the Notes due 2028, Notes due 2026 and Notes due 2025.

Changes in current accounting methods, standards, or regulations applicable to the Convertible Notes due 
2028, Notes due 2026 and Notes due 2025 could have a material  impact on our reported  financial results, 
future financial results, future cash flows, and/or our stock price.

Under  Accounting  Standards  Codification  (“ASC”)  470-20,  “Debt  with  Conversion  and  Other  Options,”  an 
entity  must  separately  account  for  the  host  contract  and  conversion  option  associated  with  convertible  debt 
instruments,  such  as  the  Notes  due  2025,  that  may  be  settled  entirely  or  partially  in  cash  upon  conversion,  in  a 
manner  that  reflects  the  issuer’s  economic  interest  cost.  For  the  Notes  due  2025,  conversion  option  met  the 
classification of an embedded derivative liability, from March 9, 2020 to May 19, 2020, and hence we had included 
embedded derivative liability in the Debt, non-current on our condensed consolidated balance sheet at the issuance 
date. Effective upon the filing of an amendment to our certificate of incorporation on May 20, 2020, the conversion 
option of the Notes due 2025 met the classification of an equity component, hence we reclassified the embedded 
derivative  liability  in  the  Debt,  non-current  to  additional  paid-in  capital  section  of  stockholders’  equity  on  our 
condensed consolidated balance sheet on May 20, 2020. This change in fair value of derivatives has resulted in a 
charge recognized of $44.3 million for the year ended December 31, 2020. We have treated the value of the equity 
component  and  embedded  derivative  liability  as  debt  discount  for  the  host  contract  at  the  issuance  date.  We  are 
required to amortize the debt discount as non-cash interest expense over the term of the Notes due 2025, which 
could adversely affect our reported or future financial results or the trading price of our common stock.

In August 2020, the FASB issued Account Standard Update (“ASU”) 2020-06, “Debt - Debt with Conversion 
and  Other  Options  (subtopic  470-20),”  effective  January  1,  2022,  the  Notes  due  2028  and  Notes  due  2026  were 
accounted for as a single liability measured at its amortized cost. Interest expense associated with the Notes due 
2028 and Notes due 2026 recorded in the consolidated statements of operations is close to the coupon rate interest 
expense. Further, for the diluted earnings per share calculation, treasury stock method will no longer be permitted 
for  the  Notes  due  2028,  the  Notes  due  2026  and  the  Notes  due  2025.  The  if-converted  method  is  used  for  the 
calculation of the diluted earnings per share calculation, when accounting for the shares issuable upon conversion 
of the Notes due 2028, the Notes due 2026 and the Notes due 2025, which will adversely affect our diluted earnings 
per  share.  However,  if  the  principal  amount  of  the  Notes  due  2028,  Notes  due  2026  and  Notes  due  2025  being 
converted is required to be paid in cash and only the excess is permitted to be settled in shares, the if-converted 
method will produce a similar result as the “treasury stock” method which was applied prior to the adoption of ASU 
2020-06. 

ASU  2016-15,  “Statement  of  Cash  Flows  (Topic  230):  Classification  of  Certain  Cash  Receipts  and  Cash 
Payments,”  clarifies  how  certain  cash  receipts  and  payments  should  be  classified  in  the  statement  of  cash  flows, 
including the cash settlement for the Notes due 2025. Upon cash settlement, repayment of the principal amount of 
the  Notes  due  2025  will  be  bifurcated  between  cash  outflows  for  operating  activities  for  the  portion  related  to 
accreted interest attributable to debt discounts arising from the difference between the coupon interest rate and the 

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effective interest rate, and financing activities for the remainder. This will require us to classify remainder of the debt 
discount  of  $21.9  million  for  Notes  due  2025  of  accreted  interest  as  cash  used  in  operating  activities  in  our 
consolidated statement of cash flows upon cash settlement, which could adversely affect our future cash flow from 
operations.

Our financial results may vary significantly from quarter to quarter due to a number of factors, which may 
lead to volatility in our stock price.

Our quarterly revenue and results of operations have varied in the past and may continue to vary significantly 
from quarter to quarter. As a result, the trading price of our common stock has been, and is likely to continue to be, 
volatile  and  could  be  subject  to  wide  fluctuations  in  response  to  various  factors,  some  of  which  are  beyond  our 
control. In addition, the trading prices of the securities of solar companies in general have been highly volatile, and 
the volatility in market price and trading volume of securities is often unrelated or disproportionate to the financial 
performance of the companies issuing the securities. Factors affecting the market price of our common stock, some 
of which are beyond our control, include:

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seasonal and other fluctuations in demand for our products; 

the  timing,  volume  and  product  mix  of  sales  of  our  products,  which  may  have  different  average  selling 
prices or profit margins; 

changes in our pricing and sales policies or the pricing and sales policies of our competitors;

the impact of supply chain disruptions, the ongoing COVID-19 pandemic and the war in Ukraine, on our 
business, sales and results of operations; 

our  ability  to  design,  manufacture  and  deliver  products  to  our  customers  in  a  timely  and  cost-effective 
manner and that meet customer requirements; 

our ability to manage our relationships with our contract manufacturers, customers and suppliers; 

quality control or yield problems in our manufacturing operations; 

the  anticipation,  announcement  or  introductions  of  new  or  enhanced  products  by  our  competitors  and 
ourselves; 

reductions in the retail price of electricity; 

our  exposure  to  the  credit  risks  of  our  customers,  particularly  in  light  of  the  fact  that  some  of  our 
customers  are  relatively  new  entrants  to  the  solar  market  without  long  operating  or  credit  histories,  and 
the impact of inflation and higher interest rates;

changes  in  laws,  regulations  and  policies  applicable  to  our  business  and  products,  particularly  those 
relating to government incentives for solar energy applications; 

the impact of tariffs on the solar industry in general and our products in particular; 

the  amount  and  timing  of  operating  costs  and  capital  expenditures  related  to  the  maintenance  and 
expansion of our business operations; 

the impact of government-sponsored programs on our customers; 

our ability to estimate future warranty obligations due to product failure rates, claim rates or replacement 
costs; 

our ability to forecast our customer demand and manufacturing requirements, and manage our inventory; 

fluctuations in foreign currency exchange rates;

announcement of acquisitions or dispositions of our assets or business operations;

issuances of our common stock or equity-linked securities such as the Convertible Notes;

changes in our management; 

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technical  factors  in  the  public  trading  market  for  our  common  stock  that  may  produce  price  movements 
that  may  or  may  not  comport  to  macro,  industry  or  company-specific  fundamentals,  including,  without 
limitation, the sentiment of retail investors (including as may be expressed on financial trading and other 
social media sites), the amount and status of short interest in our securities, rising interest rates, inflation, 
access  to  margin  debt,  trading  in  options  and  other  derivatives  on  our  common  stock  and  any  related 
hedging or other technical trading factors; and

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general economic conditions and changes in such conditions specific to our target markets.

The above factors are difficult to forecast, and these, as well as other factors, could materially and adversely 
affect our quarterly and annual results of operations. Any failure to adjust spending quickly enough to compensate 
for  a  revenue  shortfall  could  magnify  the  adverse  impact  of  this  revenue  shortfall  on  our  results  of  operations. 
Moreover, our results of operations may not meet our announced guidance or the expectations of research analysts 
or investors, in which case the price of our common stock could decrease significantly. There can be no assurance 
that we will be able to successfully address these risks.

In  addition,  in  the  past,  many  companies  that  have  experienced  volatility  in  the  market  price  of  their  stock 
have been subject to securities class action litigation. We have been in the past and may become in the future the 
target of this type of litigation in the future. Securities litigation against us could result in substantial costs and divert 
our management’s attention from other business concerns, which could seriously harm our business.

We may not be able to raise additional capital to execute on our current or future business opportunities on 
favorable terms, if at all, or without dilution to our stockholders.

We  believe  that  our  existing  cash  and  cash  equivalents  and  cash  flows  from  our  operating  activities  will  be 
sufficient  to  meet  our  anticipated  cash  needs  for  at  least  the  next  12  months.  However,  we  may  need  to  raise 
additional capital or debt financing to execute on our current or future business strategies, including to:

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provide additional cash reserves to support our operations;

invest in our research and development efforts; 

expand our operations into new product markets and new geographies; 

acquire complementary businesses, products, services or technologies; or 

otherwise pursue our strategic plans and respond to competitive pressures, including adjustments to our 
business to mitigate the effects of any tariffs that might apply to us or our industry.

We  do  not  know  what  forms  of  financing,  if  any,  will  be  available  to  us.  If  financing  is  not  available  on 
acceptable terms, if and when needed, our ability to fund our operations, enhance our research and development 
and  sales  and  marketing  functions,  develop  and  enhance  our  products,  respond  to  unanticipated  events  and 
opportunities, or otherwise respond to competitive pressures would be significantly limited. In any such event, our 
business,  financial  condition  and  results  of  operations  could  be  materially  harmed,  and  we  may  be  unable  to 
continue  our  operations.  Moreover,  if  we  raise  additional  funds  through  the  issuance  of  equity  or  convertible  debt 
securities,  the  percentage  ownership  of  our  stockholders  could  be  significantly  diluted,  and  these  newly  issued 
securities may have rights, preferences or privileges senior to those of existing stockholders.

We  currently  do  not  intend  to  pay  dividends  on  our  common  stock  and,  consequently,  your  only 
opportunity to achieve a return on your investment is if the price of our common stock appreciates.

We  currently  do  not  plan  to  declare  dividends  on  shares  of  our  common  stock  in  the  foreseeable  future.  In 
addition, our term loan agreement restricts our ability to pay dividends. Consequently, an investor’s only opportunity 
to achieve a return on its investment in our company will be if the market price of our common stock appreciates 
and the investor sells its shares at a profit.

Our  charter  documents  and  Delaware  law  could  prevent  a  takeover  that  stockholders  consider  favorable 
and could also reduce the market price of our stock.

Our  certificate  of  incorporation  and  our  bylaws  contain  provisions  that  could  delay  or  prevent  a  change  in 
control  of  our  company. These  provisions  could  also  make  it  more  difficult  for  stockholders  to  elect  directors  and 
take other corporate actions, including effecting changes in our management. These provisions include:

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providing for a classified board of directors with staggered, three-year terms, which could delay the ability 
of stockholders to change the membership of a majority of our board of directors; 

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not  providing  for  cumulative  voting  in  the  election  of  directors,  which  limits  the  ability  of  minority 
stockholders to elect director candidates; 

authorizing our board of directors to issue, without stockholder approval, preferred stock rights senior to 
those of common stock, which could be used to significantly dilute the ownership of a hostile acquiror; 

prohibiting stockholder action by written consent, which forces stockholder action to be taken at an annual 
or special meeting of our stockholders;

requiring  the  affirmative  vote  of  holders  of  at  least  66  2/3%  of  the  voting  power  of  all  of  the  then 
outstanding  shares  of  voting  stock,  voting  as  a  single  class,  to  amend  provisions  of  our  certificate  of 
incorporation  relating  to  the  management  of  our  business,  our  board  of  directors,  stockholder  action  by 
written consent, advance notification of stockholder nominations and proposals, forum selection and the 
liability  of  our  directors,  or  to  amend  our  bylaws,  which  may  inhibit  the  ability  of  stockholders  or  an 
acquiror  to  effect  such  amendments  to  facilitate  changes  in  management  or  an  unsolicited  takeover 
attempt; 

requiring special meetings of stockholders may only be called by our chairman of the board, if any, our 
chief executive officer, our president or a majority of our board of directors, which could delay the ability of 
our stockholders to force consideration of a proposal or to take action, including the removal of directors; 
and 

requiring advance notification of stockholder nominations and proposals, which may discourage or deter a 
potential acquiror from conducting a solicitation of proxies to elect the acquiror’s own slate of directors or 
otherwise attempting to obtain control of us. 

In  addition,  the  provisions  of  Section  203  of  the  Delaware  General  Corporate  Law  may  prohibit  large 
stockholders, in particular those owning 15% or more of our outstanding common stock, from engaging in certain 
business combinations, without approval of substantially all of our stockholders, for a certain period of time.

These  provisions  in  our  certificate  of  incorporation,  our  bylaws  and  under  Delaware  law  could  discourage 
potential takeover attempts, reduce the price that investors might be willing to pay for shares of our common stock 
in the future and result in the market price being lower than it would be without these provisions.

General Risks Related to our Business

Natural  disasters,  public  health  events,  significant  disruptions  of  information  technology  systems,  data 
security breaches, or other catastrophic events could adversely affect our operations.

Our  worldwide  operations  could  be  subject  to  natural  disasters  (including  as  a  result  of  climate  change), 
public  health  events,  significant  disruptions  of  information  technology  systems,  data  security  breaches  and  other 
catastrophic  business  disruptions,  which  could  harm  our  future  revenue  and  financial  condition  and  increase  our 
costs  and  expenses.  For  example,  our  corporate  headquarters  in  Fremont,  California  is  located  near  major 
earthquake  fault  lines  and  our  Petaluma,  California  facility  is  near  fault  lines  and  the  sites  of  recent  catastrophic 
wildfires.  We  rely  on  third-party  manufacturing  facilities,  including  for  all  product  assembly  and  final  testing  of  our 
products,  which  are  performed  at  third-party  manufacturing  facilities,  in  China,  Mexico  and  India.  There  may  be 
conflict or uncertainty in the countries in which we operate, including public health issues (for example, the ongoing 
COVID-19  pandemic  or  an  outbreak  of  other  contagious  diseases  or  health  epidemics),  safety  issues,  natural 
disasters,  fire,  disruptions  of  service  from  utilities,  nuclear  power  plant  accidents,  regional  wars,  or  general 
economic or political factors. Such risks could result in an increase in the cost of components, production delays, 
general business interruptions, delays from difficulties in obtaining export licenses for certain technology, tariffs and 
other barriers and restrictions, longer payment cycles, increased taxes, restrictions on the repatriation of funds and 
the burdens of complying with a variety of foreign laws, any of which could ultimately have a material adverse effect 
on our business.

  In  the  event  that  natural  disasters  (including  as  a  result  of  climate  change),  public  health  epidemics  or 
technical catastrophes were to damage or destroy any part of our facilities or those of our contract manufacturer, 
destroy or disrupt vital infrastructure systems or interrupt our operations or services for any extended period of time, 
our business, financial condition and results of operations would be materially and adversely affected.

Enphase Energy, Inc. | 2022 Form 10-K | 44

Table of Contents

If we fail to maintain an effective system of internal controls or are unable to remediate any deficiencies in 
our internal controls, we might not be able to report our financial results accurately or prevent fraud; in that 
case,  our  stockholders  could  lose  confidence  in  our  financial  reporting,  which  would  harm  our  business 
and could negatively impact the price of our stock.

Effective  internal  controls  are  necessary  for  us  to  provide  reliable  financial  reports  and  prevent  fraud.  In 
addition,  Section  404  of  the  Sarbanes-Oxley Act  of  2002,  as  amended  (the  “Sarbanes-Oxley Act”),  requires  us  to 
establish and maintain internal control over financial reporting and disclosure controls procedures. The process of 
implementing our internal controls and complying with Section 404 of the Sarbanes-Oxley Act has required, and will 
continue to require, significant attention of management. If we or our independent registered public accounting firm 
discover  a  material  weakness  in  our  internal  controls  over  financial  reporting,  the  disclosure  of  that  fact,  even  if 
quickly remedied, could reduce the market’s confidence in our financial statements and harm our stock price. To the 
extent any material weaknesses in our internal control over financial reporting are identified, we could be required to 
expend significant management time and financial resources to correct such material weaknesses or to respond to 
any resulting regulatory investigations or proceedings.

Our business is subject to tax liabilities.

We  are  subject  to  income  tax,  indirect  tax  or  other  tax  claims  by  tax  agencies  in  jurisdictions  in  which  we 
conduct  business.  Significant  judgment  is  required  in  determining  our  worldwide  provision  for  income  taxes.  Tax 
laws are dynamic and subject to change as new laws are passed and new interpretations of the law are issued or 
applied. The IRA included significant changes to the U.S. federal income tax laws, the consequences of which could 
increase our future U.S. income tax expense. As additional guidance is issued by the applicable taxing authorities 
and as new accounting treatment is clarified, we may report additional adjustments in the period if new information 
becomes available. We have a significant amount  of  deferred tax assets and a portion of the deferred tax assets 
related  to  net  operating  losses  or  tax  credits  could  be  subject  to  limitations  under  the  Code  Sections  382  or  383, 
separate return limitation year rules. The limitations could reduce our ability to utilize our net operating losses or tax 
credits  before  the  expiration  of  the  tax  attributes.  Tax  law  changes  or  the  limitations  could  be  material  and  could 
materially affect our tax obligations and effective tax rate.

In  the  ordinary  course  of  our  business,  there  are  many  transactions  and  calculations  where  the  ultimate 
income  tax,  indirect  tax,  or  other  tax  determination  is  uncertain.  Although  we  believe  our  tax  estimates  are 
reasonable,  we  cannot  be  certain  that  the  final  determination  of  our  tax  audits  and  litigation  will  not  be  materially 
different from that which is reflected in historical tax provisions and accruals. Should additional taxes be assessed 
as a result of an audit, assessment or litigation, there could be a material adverse effect on our cash, tax provisions 
and net income (loss) in the period or periods for which that determination is made.

Item 1B.  Unresolved Staff Comments

None.

Item 2.  Properties

The table below presents details for each of our principal properties:

Facility
Corporate headquarters
Customer service support
Administrative office and R&D facility
Marketing and sales support, and R&D 
facility
Global support office
R&D facility
Marketing and sales support
Marketing and sales support

Location
Fremont, U.S.
Boise, U.S.
Petaluma, U.S.

Germany
Bengaluru, India
New Zealand
Australia
Netherlands

Held
Leased
Leased
Leased

Leased
Leased
Leased
Leased
Leased

Approximate 
Square Footage
40,446
24,688
141,231

Lease end term
Sep-2025
Jan-2027
Aug-2032

11,260
141,168
27,099
4,478
6,997

Dec-2029
Nov-2025
Oct-2025
Jul-2026
Jan-2026

Enphase Energy, Inc. | 2022 Form 10-K | 45

Table of Contents

Item 3.  Legal Proceedings

From time to time, we may be involved in litigation relating to claims arising out of our operations, the ultimate 
disposition of which could have a material adverse effect on our operations, financial condition, or cash flows. We 
are not currently aware of any material legal proceedings, involving the Company.

Item 4.  Mine Safety Disclosures 

Not applicable.

Enphase Energy, Inc. | 2022 Form 10-K | 46

Table of Contents

PART II

Item 5.  Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of 

Equity Securities

Common Stock

Our common stock, $0.00001 par value per share, has traded on The Nasdaq Global Market under the stock 

symbol “ENPH” since March 30, 2012.

Holders

As of February 6, 2023, there were approximately 17 holders of record of our common stock, one of which 
was Cede & Co., a nominee for Depository Trust Company (“DTC”). All of the shares of our common stock held by 
brokerage  firms,  banks  and  other  financial  institutions  as  nominees  for  beneficial  owners  are  deposited  into 
participant accounts at DTC and are therefore considered to be held of record by Cede & Co. as one stockholder.

Dividend Policy

We have never paid any cash dividends on our common stock. We currently anticipate that we will retain any 
available  funds  to  invest  in  the  growth  and  operation  of  our  business  and  we  do  not  anticipate  paying  any  cash 
dividends in the foreseeable future.

Recent Sales of Unregistered Securities and Issuer Repurchases of Securities

There were no unregistered sales of equity securities by us during the year ended December 31, 2022. 

In  May  2021,  our  board  of  directors  authorized  the  2021  Repurchase  Program  pursuant  to  which  we  may 
repurchase  up  to  an  aggregate  of  $500.0  million  of  our  common  stock.  As  of  December  31,  2022,  we  have 
approximately $200.0 million remaining for repurchase of shares under the 2021 Repurchase Program. Purchases 
may  be  completed  from  time  to  time  in  the  open  market  or  through  structured  repurchase  agreements  with  third 
parties. The program may be discontinued or amended at any time and expires on May 13, 2024. Such purchases 
are expected to continue through May 2024 unless otherwise extended or shortened by our board of directors. 

The following table provides information about our purchases of our common stock during the three months 

ended December 31, 2022 (in thousands, except per share amounts):

Period Ended

Total Number of 
Shares Purchased

Average Price Paid 
per Share

Total Number of 
Shares Purchased as 
Part of Publicly 
Announced Programs

Approximate Dollar 
Value of Shares that 
May Yet Be 
Purchased Under the 
Programs

October 2022

November 2022

December 2022

Total

Stock Performance Graph

—  $ 
—  $ 
—  $ 
— 

— 

— 

— 

—  $ 

—  $ 

—  $ 
— 

200,000 

200,000 

200,000 

This section is not “soliciting material” and is not deemed “filed” for purposes of Section 18 of the Exchange 
Act or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing 
under  the  Securities Act  or  the  Exchange Act,  as  amended,  regardless  of  any  general  incorporation  language  in 
such filing.

The graph depicted below shows a comparison of cumulative total stockholder returns for our common stock, 
the S&P 500 Index and the Invesco Solar ETF for the period from December 31, 2018 to December 31, 2022. An 
investment of $100 is assumed to have been made in our common stock and in each index on December 31, 2018, 
all dividends were reinvested, and the relative performance of the investments are tracked through December 31, 
2022.  The  information  shown  is  historical  and  stockholder  returns  over  the  indicated  period  should  not  be 
considered indicative of future stockholder returns or future performance.

Enphase Energy, Inc. | 2022 Form 10-K | 47

 
 
 
 
 
 
 
 
Table of Contents

Enphase Energy, Inc.

S&P 500 Index

Invesco Solar ETF

Item 6. 

[Reserved]

December 31,
2018

December 31,
2019

December 31,
2020

December 31,
2021

December 31,
2022

$ 

$ 

$ 

100  $ 

100  $ 

100  $ 

552  $ 

129  $ 

166  $ 

3,710  $ 

3,868  $ 

5,602 

150  $ 

554  $ 

190  $ 

415  $ 

153 

393 

Enphase Energy, Inc. | 2022 Form 10-K | 48

Enphase Stock Price vs. Indices December 31, 2018 - December 31, 2022Enphase EnergyS&P 500 IndexInvesco Solar ETF12/31/1812/31/1912/31/2012/31/2112/31/22$0$2,500$5,000$7,500Table of Contents

Item 7.  Management’s Discussion and Analysis of Financial Condition and Results of Operations 

The following discussion and analysis should be read in conjunction with our consolidated financial 

statements and notes thereto included in this Annual Report on Form 10-K.

Business Overview and 2022 Highlights

We  are  a  global  energy  technology  company.  We  deliver  smart,  easy-to-use  solutions  that  manage  solar 
generation, storage and communication on one platform. We revolutionized the solar industry with our microinverter 
technology  and  we  produce  a  fully  integrated  solar-plus-storage  solution.  As  of  December  31,  2022,  we  have 
shipped approximately 58 million microinverters, and over 3.0 million Enphase residential and commercial systems 
have been deployed in more than 145 countries.

We sell primarily to solar distributors who combine our products with others, including solar modules products 
and  racking  systems,  and  resell  to  installers  in  each  target  region.  In  addition  to  our  solar  distributors,  we  sell 
directly  to  select  large  installers,  original  equipment  manufacturers  (“OEMs”)  and  strategic  partners.  Our  OEMs 
customers  include  solar  module  manufacturers  who  integrate  our  microinverters  with  their  solar  module  products 
and  resell  to  both  distributors  and  installers.  Strategic  partners  include  providers  of  solar  financing  solutions.  We 
also  sell  certain  products  and  services  to  homeowners  primarily  in  support  of  our  warranty  services  and  legacy 
product upgrade programs via our online store.

In  March  2022,  we  paid  approximately  $26.1  million  in  cash  for  the  acquisition  of  SolarLeadFactory,  a 

privately-held company. SolarLeadFactory provides high quality leads to solar installers.

In  October  2022,  we  paid  approximately  $34.9  million  in  cash  for  the  acquisition  of  GreenCom,  a  privately-
held  company.  GreenCom  provides  Internet  of  Things  (IoT)  software  solutions  for  customers  to  connect  and 
manage a wide range of distributed energy devices within the home.

Further details on the above acquisition may be found in Note 6, “Business Combinations”, in the notes to the 

consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K.

Global Events Affecting our Business and Operations

Supply Chain Constraints. Due to increased demand across a range of industries, the global supply chain and 
the  semiconductor  industry  experienced  significant  disruptions  in  second  half  of  2021  and  during  2022.  We  have 
seen  supply  chain  challenges,  including  component  shortages,  which  have,  in  certain  cases,  caused  delays  in 
critical components and inventory, longer lead times, and have resulted in increased costs.

We believe these supply chain challenges will persist in 2023 and expect that the extended lead times and 
elevated supply chain costs we have experienced will continue for the reasonably foreseeable future. It is unclear 
when the supply environment will become less volatile and what impacts the supply environment will have on our 
business and results of operations in future periods. In addition, the impact of inflation on the price of components, 
raw materials and labor has increased, although in the near term we have not seen our gross margin impacted by 
inflation as we increased prices for our product offerings in the second half of 2021 and in 2022 as well.

Throughout 2022, overall reliability of supply improved, and the majority of our suppliers were able to deliver 
components by their promised lead times, although such times had, in many cases, been extended. We continue to 
work to mitigate the effects of supply chain constraints and the impacts of inflation. In the event we are unable to 
mitigate  the  impact  of  delays  in  and/or  price  increases  for  raw  materials,  electronic  components  and  freight,  the 
manufacturing and installation of our products could be delayed, which would adversely impact our cash flows and 
results of operations, including revenue and gross margin. We continue to focus on a range of initiatives that seek to 
optimize our operations, improve our resiliency, and drive cost reductions. We seek to balance these goals through 
our sourcing and supply chain strategy, outsourcing and our use of lower cost geographies. Our efforts also include 
process  optimization  initiatives  designed  to  drive  improved  efficiencies  in  our  sourcing,  production,  logistics  and 
fulfillment.

COVID-19  Pandemic.  The  impact  of  the  COVID-19  pandemic  and  countermeasures  taken  to  contain  its 
spread  remain  dynamic.  We  continue  to  monitor  the  situation  and  actively  assess  further  implications  for  our 
business,  supply  chain,  fulfillment  operations  and  overall  demand.  We  continue  to  take  meaningful  precautions  in 
accordance with relevant guidelines to protect the health and safety of our employees. The extent of the continuing 
impact of COVID-19 on our operational and financial performance will depend on various developments, including 
the  duration  and  spread  of  the  virus  and  its  variants,  impact  on  our  end-customers’  spending,  volume  of  sales, 

Enphase Energy, Inc. | 2022 Form 10-K | 49

Table of Contents

impact on our partners, suppliers and employees, and actions that may be taken by governmental authorities. If the 
COVID-19  pandemic  or  its  adverse  effects  become  more  severe  or  prevalent  or  are  prolonged  in  the  locations 
where  we,  our  customers,  suppliers  or  manufacturers  conduct  business,  or  we  experience  more  pronounced 
disruptions  in  our  business  or  operations,  or  in  economic  activity  and  demand  for  our  products  and  services 
generally,  our  business  and  results  of  operations  in  future  periods  could  be  materially  adversely  affected.  Further 
information relating to the risks and uncertainties related to the ongoing COVID-19 pandemic may be found in Part I, 
Item 1A, Risk Factors of this Annual Report on Form 10-K.

Russia  and  Ukraine  Conflict.  In  February  2022,  armed  conflict  escalated  between  Russia  and  Ukraine. The 
United States and certain other countries have imposed sanctions on Russia and could impose further sanctions, 
which  could  damage  or  disrupt  international  commerce  and  the  global  economy.  While  we  do  not  have  sales  or 
operations in Russia or Ukraine, it is possible that the conflict or actions taken in response, could adversely affect 
some  of  our  markets  and  suppliers,  the  broader  economic  and  financial  markets,  or  costs  and  availability  of 
components and materials, or cause further supply chain disruptions.

Inflation Reduction Act of 2022. In August 2022, the IRA was enacted, which includes extension of the ITC as 
well as an AMPTC to incentivize clean energy component sourcing and production, including for the production of 
solar related components, battery cells and battery packs. The IRA provides for an AMPTC on microinverters of 11 
cents per alternating current watt basis. The AMPTC for each component, including on microinverters, decreases by 
25% each year beginning in 2030 and ending after 2032. Under the IRA, the ITC was extended until 2032 to allow a 
qualifying  homeowner  to  deduct  30%  of  the  cost  of  installing  residential  solar  systems  from  their  U.S.  federal 
income  taxes,  thereby  returning  a  material  portion  of  the  purchase  price  of  the  residential  solar  system  to 
homeowners. Under the terms of the current extension, the ITC will remain at 30% through the end of 2032, reduce 
to  26%  for  2033,  reduce  to  22%  for  2034,  and  further  reduce  to  0.0%  after  the  end  of  2034  for  residential  solar 
systems,  unless  it  is  extended  before  that  time.  We  believe  the  enactment  of  the  IRA  is  favorable  to  our  overall 
business  worldwide;  however,  we  are  continuing  to  evaluate  the  overall  impact  and  applicability  of  the  IRA  to  our 
results  of  operations  going  forward,  including  the  revisions  to  the  U.S.  Internal  Revenue  Code,  which  includes  a 
15%  corporate  minimum  income  tax  and  a  1%  excise  tax  on  corporate  stock  repurchases  in  tax  years  beginning 
after December 31, 2022.

In December 2022, the California’s Public Utilities Commission approved and voted for NEM 3.0, which will be 
in effect starting April 15, 2023. The new policy reduces the compensation earned by solar customers selling extra 
energy to the grid by a substantial amount. The average export rate in California is expected to be approximately 
$0.05/kWh  to  $0.08/kWh  when  effected  compared  to  current  average  of  $0.25/kWh  to  $0.35/kWh.  NEM  3.0  in 
California may reduce demand for solar PV systems, including our future inverter sales.

Components of Consolidated Statements of Operations

Net Revenues

Revenues

We generate revenue from sales of our solutions, which include microinverter and related accessories, an IQ 
Gateway, the cloud-based Enlighten monitoring service, storage solutions, EV charging solutions, design, proposal, 
permitting and lead generation services, as well as a platform matching cleantech asset owners to a local and on-
demand workforce of service providers, to distributors, large installers, original equipment manufacturers (“OEMs”) 
and strategic partners.

Our  revenue  is  affected  by  changes  in  the  volume  and  average  selling  prices  of  our  solutions  and  related 
accessories,  supply  and  demand,  sales  incentives,  and  competitive  product  offerings.  Our  revenue  growth  is 
dependent on our ability to compete effectively in the marketplace by remaining cost competitive, developing and 
introducing new products that meet the changing technology and performance requirements of our customers, the 
diversification and expansion of our revenue base, and our ability to market our products in a manner that increases 
awareness for microinverter technology and differentiates us in the marketplace.

Cost of Revenues and Gross Profit

Cost  of  revenues  is  comprised  primarily  of  product  costs,  warranty,  manufacturing  support  personnel  and 
logistics costs, freight costs, inventory write-downs, hosting services costs related to our Enlighten service offering, 
lead  acquisition  costs,  design  and  proposal  services,  depreciation  and  amortization  of  manufacturing  test 
equipment,  amortization  of  capitalized  software  development  costs  related  to  our  Enlighten  service  offering  and 

Enphase Energy, Inc. | 2022 Form 10-K | 50

Table of Contents

design  and  proposal  services,  and  employee-related  expenses  associated  with  proposal  and  permitting  services 
and design and proposal service customer support. Our product costs are impacted by technological innovations, 
such as advances in semiconductor integration and new product introductions, economies of scale resulting in lower 
component  costs,  and  improvements  in  production  processes  and  automation.  Certain  costs,  primarily  personnel 
and depreciation and amortization of test equipment, are not directly affected by sales volume.

We outsource our manufacturing to third-party contract manufacturers and generally negotiate product pricing 
with them on a quarterly basis. We believe our contract manufacturing partners have sufficient production capacity 
to  meet  the  anticipated  demand  for  our  products  for  the  foreseeable  future.  However,  shortages  in  the  supply  of 
certain key raw materials could adversely affect our ability to meet customer demand for our products. We contract 
with third parties, including one of our contract manufacturers, to serve as our logistics providers by warehousing 
and delivering our products in the United States, Europe and Asia.

Gross profit may vary from quarter to quarter and is primarily affected by our average selling prices, product 
cost,  product  mix,  customer  mix,  tariff  refunds,  warranty  costs  and  sales  volume  fluctuations  resulting  from 
seasonality.

Operating Expenses

Operating  expenses  consist  of  research  and  development,  sales  and  marketing,  general  and  administrative 
and restructuring expenses. Personnel-related costs are the most significant component of each of these expense 
categories  and  include  salaries,  benefits,  payroll  taxes,  sales  commissions,  incentive  compensation,  post-
combination expense and stock-based compensation.

Research and development expense include personnel-related expenses, third-party design and development 
costs,  testing  and  evaluation  costs,  depreciation  expense  and  other  indirect  costs.  Research  and  development 
employees are primarily engaged in the design and development of power electronics, semiconductors, powerline 
communications, networking and software functionality, and storage. We devote substantial resources to research 
and  development  programs  that  focus  on  enhancements  to,  and  cost  efficiencies  in,  our  existing  products  and 
timely  development  of  new  products  that  utilize  technological  innovation  to  drive  down  product  costs,  improve 
functionality,  and  enhance  reliability.  We  intend  to  continue  to  invest  appropriate  resources  in  our  research  and 
development efforts because we believe they are critical to maintaining our competitive position.

Sales and marketing expense include personnel-related expenses, travel, trade shows, marketing, customer 
support and other indirect costs. We expect to continue to make the necessary investments to enable us to execute 
our  strategy  to  increase  our  market  penetration  geographically  and  enter  into  new  markets  by  expanding  our 
customer base of distributors, large installers, OEMs and strategic partners. We currently offer solutions targeting 
the  residential  and  commercial  markets  in  the  United  States,  Canada,  Mexico,  Europe,  Australia,  New  Zealand, 
India,  Brazil,  the  Philippines,  Thailand,  South  Africa  and  certain  other  Central  American  and  Asian  markets.  We 
expect  to  continue  to  expand  the  geographic  reach  of  our  product  offerings  and  explore  new  sales  channels  in 
addressable markets in the future.

General  and  administrative  expense  include  personnel-related  expenses  for  our  executive,  finance,  human 
resources, information technology and legal organizations, facilities costs, and fees for professional services. Fees 
for professional services consist primarily of outside legal, accounting and information technology consulting costs.

Restructuring  charges  are  the  net  charges  resulting  from  restructuring  initiatives  implemented  in  2022  to 
reorganize  our  global  workforce,  consolidate  facilities  and  eliminate  non-core  projects.  Under  this  restructuring, 
costs  included  in  restructuring  primarily  consisted  of  employee  severance  and  one-time  benefits,  workforce 
reorganization charges and non-cash charges related to impairment of property and equipment.

Other Income (Expense), Net

Other  income  (expense),  net  primarily  consists  of  interest  income  on  our  cash,  cash  equivalents  and 
marketable  securities,  amortization  of  discount  or  premium  on  purchase  of  cash  equivalents  and  marketable 
securities, gains or losses upon conversion of foreign currency transactions into U.S. dollars, interest expense, fees 
under our convertible notes, changes in fair value of contingent consideration, non-cash interest expense related to 
the accretion of debt discount and amortization of deferred financing costs, non-cash charges recognized for loss on 
partial settlement of convertible notes and the change in fair value of our convertible notes embedded derivative and 
warrants.

Enphase Energy, Inc. | 2022 Form 10-K | 51

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Income Tax Benefit (Provision)

We  are  subject  to  income  taxes  in  the  countries  where  we  sell  our  products.  Historically,  we  have  primarily 
been subject to taxation in the United States because we have sold the majority of our products to customers in the 
United States. As we have expanded the sale of products to customers outside the United States, we have become 
subject to taxation based on the foreign statutory rates in the countries where these sales took place. As sales in 
foreign jurisdictions increase in the future, our effective tax rate may fluctuate accordingly. We regularly assess the 
ability  to  realize  deferred  tax  assets  based  on  the  weight  of  all  available  evidence,  including  such  factors  as  the 
history of recent earnings and expected future taxable income on a jurisdiction by jurisdiction basis.

Summary Consolidated Statements of Operations

The following table sets forth a summary of our consolidated statements of operations for the periods 

presented (in thousands):

Net revenues

Cost of revenues

Gross profit

Operating expenses:

Research and development

Sales and marketing

General and administrative

Restructuring charges

Total operating expenses

Income from operations

Other income (expense), net

Interest income

Interest expense

Other (expense) income, net

Loss on partial settlement of convertible notes

Change in fair value of derivatives

Total other income (expense), net

Income before income taxes

Income tax benefit (provision)

Net income

Years Ended December 31,

2022

2021

2020

$ 

2,330,853  $ 

1,382,049  $ 

774,425 

1,356,258 

974,595 

168,846 

215,102 

140,002 

2,384 

526,334 

448,261 

827,627 

554,422 

105,526 

128,974 

104,090 

— 

338,590 

215,832 

428,444 

345,981 

55,921 

52,927 

50,694 

— 

159,542 

186,439 

13,656 

695 

2,156 

(9,438)   

(45,152)   

(21,001) 

(431)   

6,050 

— 

— 

3,787 

452,048 

(54,686)   

(56,497)   

— 

(94,904)   

120,928 

24,521 

(799) 

(3,037) 

(44,348) 

(67,029) 

119,410 

14,585 

$ 

397,362  $ 

145,449  $ 

133,995 

Enphase Energy, Inc. | 2022 Form 10-K | 52

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Results of Operations

Net Revenues 

Years Ended December 31,

Change in

2022

2021

$

%

(In thousands, except percentages)

Net revenues

$ 

2,330,853  $ 

1,382,049  $  948,804 

 69 %

Net revenues increased by 69%, or $948.8 million, for the year ended December 31, 2022, as compared to 
the  same  period  in  2021,  driven  primarily  by  a  47%  increase  in  microinverter  units  volume  shipped  and  a  103% 
increase  in  Enphase  IQ  Battery  Megawatt-hour  (“MWh”)  shipped.  For  the  year  ended  December  31,  2022, 
consumer demand increased and component supply improved as we sold approximately 15.4 million microinverter 
units, as compared to approximately 10.4 million units for the year ended December 31, 2021. For the year ended 
December 31, 2022, we also increased shipments of our Enphase IQ Batteries to customers in the United States 
and  Europe  to  508.5  MWh  as  compared  to  251.0  MWh  shipped  in  the  same  period  in  2021. The  average  selling 
price  of  our  microinverter  products  increased  by  11%  for  the  year  ended  December  31,  2022,  which  resulted  in 
approximately $133.0 million increase in revenue, as compared to the same period in 2021, primarily driven by a 
favorable  product  mix  as  we  sold  more  IQ8  microinverters  relative  to  IQ7  microinverters  for  the  year  ended 
December 31, 2022, and we increased prices for our product offerings in the second half of 2021 and in 2022 to 
partially offset the impact of higher logistics costs and component costs from global supply chain pricing pressures.

Cost of Revenues and Gross Margin

Cost of revenues
Gross profit
Gross margin

Years Ended December 31,

Change in

2022

2021

$

%

(In thousands, except percentages)

$  1,356,258 
974,595 

$ 

827,627 
554,422 

$  528,631 
420,173 

 64 %
 76 %

 41.8 %

 40.1 %

Cost of revenues increased by 64%, or $528.6 million, for the year ended December 31, 2022, as compared 
to the same period in 2021, primarily due to higher volume of microinverter units sold, higher Enphase IQ Battery 
MWh  shipped,  and  higher  shipping  and  warranty  costs  associated  with  the  higher  volume  of  sales  globally.  The 
increase  was  also  due  to  $6.3  million  higher  amortization  of  developed  technology  and  $5.7  million  higher  stock-
based compensation.

Gross margin increased by 1.7 percentage points for the year ended December 31, 2022, as compared to the 
same period in 2021. The increase was primarily due to an increase in average selling prices driven by a favorable 
product  mix,  as  we  sold  more  IQ8  microinverters  relative  to  IQ7  microinverters  for  the  year  ended  December  31, 
2022,  and  price  increases  to  our  products  in  the  second  half  of  2021  and  in  2022,  as  well  as  cost  management 
efforts such as reduction of freight costs. This increase was partially offset by unfavorable impact of 1.5 percentage 
points  from  currency  fluctuations  in  the  euro  relative  to  the  U.S.  dollar  when  we  convert  the  current  year  euro 
denominated revenue into the U.S. dollar using the comparable prior period’s average currency exchange rate and 
0.3  percentage  points  from  higher  amortization  of  developed  technology  and  0.2  percentage  points  from  higher 
stock-based compensation.

Enphase Energy, Inc. | 2022 Form 10-K | 53

 
 
 
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Research and Development

Research and development
Percentage of net revenues

Years Ended December 31,

Change in

2022

2021

$

%

(In thousands, except percentages)

$ 

168,846 

$ 

105,526 

$ 

63,320 

 60 %

 7 %

 8 %

Research  and  development  expense  increased  by  60%,  or  $63.3  million,  for  the  year  ended  December  31, 
2022, as compared to the same period in 2021. The increase was primarily due to $55.1 million of higher personnel-
related  expenses  and  $8.2  million  of  equipment  expense  associated  with  our  investment  in  the  development, 
introduction and qualification of new product innovation. The increase in personnel-related expenses was primarily 
due to a 51% growth in headcount from hiring and retention programs for employees in New Zealand, India and the 
United  States,  which  increased  total  compensation  costs,  including  stock-based  compensation.  The  amount  of 
research and development expenses may fluctuate from period to period due to the differing levels and stages of 
development activity for our products.

Sales and Marketing

Sales and marketing
Percentage of net revenues

Years Ended December 31,

Change in

2022

2021

$

%

(In thousands, except percentages)

$ 

215,102 

$ 

128,974 

$ 

86,128 

 67 %

 9 %

 9 %

Sales and marketing expense increased by 67%, or $86.1 million, for the year ended December 31, 2022, as 
compared to the same period in 2021. The increase was primarily due to $81.1 million of higher personnel-related 
expenses  from  a  90%  growth  in  headcount  as  a  result  of  our  efforts  to  improve  customer  experience,  to  provide 
24/7 support along with a field service desk for installers and Enphase system owners globally, and to support our 
business growth in the United States and international expansion in Europe. In addition, annual retention programs 
for employees also resulted in the increase in total compensation costs, including stock-based compensation. The 
increase in sales and marketing expense for the year ended December 31, 2022, as compared to the same period 
in  2021,  was  also  attributable  to  $8.9  million  of  higher  amortization  costs  related  to  intangible  assets  acquired 
through  business  combinations  and  $8.4  million  of  higher  professional  services  and  facility  costs  to  support  our 
business  growth.  This  increase  was  partially  offset  by  a  decrease  of  $12.3  million  in  the  advertising  costs  and 
marketing expenses.

General and Administrative

General and administrative
Percentage of net revenues

Years Ended December 31,

Change in

2022

2021

$

%

(In thousands, except percentages)

$ 

140,002 

$ 

104,090 

$ 

35,912 

 35 %

 6 %

 8 %

General  and  administrative  expense  increased  by  35%,  or  $35.9  million,  for  the  year  ended  December  31, 
2022, as compared to the same period in 2021. The increase was primarily due to $23.5 million of higher personnel-
related  expenses  from  a  33%  growth  in  headcount  increasing  total  compensation  costs,  including  stock-based 
compensation  and  post  business  combination  employment-related  expense,  $7.7  million  of  investments  in 
technological infrastructure and other operational and facilities costs to support scalability of our business growth, 
and $4.7 million of higher legal and professional services.

Enphase Energy, Inc. | 2022 Form 10-K | 54

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Restructuring Charges

Restructuring charges

** 

Not meaningful

Years Ended December 31,

Change in

2022

2021

$

%

(In thousands, except percentages)

$ 

2,384  $ 

—  $ 

2,384 

*
*

During  the  year  ended  December  31,  2022,  we  implemented  restructuring  actions  to  reorganize  our  global 
workforce, consolidate facilities and eliminate non-core projects. We expect to complete our restructuring activities 
in 2023. Restructuring charges for the year ended December 31, 2022 primarily included $2.4 million of one-time 
termination benefits and other employee-related expenses and impairment of property and equipment, net. We had 
no restructuring charges for the year ended December 31, 2021. 

Other Income (Expense), Net

Interest income
Interest expense
Other (expense) income, net
Loss on partial settlement of convertible notes
Total other income (expense), net

** 

Not meaningful

Years Ended December 31,

Change in

2022

2021

$

%

(In thousands, except percentages)

13,656  $ 
(9,438)   
(431)   
— 
3,787  $ 

695  $ 

(45,152)   
6,050 
(56,497)   
(94,904)  $ 

12,961 
35,714 
(6,481) 
56,497 
98,691 

$ 

$ 

 1,865 %
 (79) %
 (107) %
**
 (104) %

Interest  income  of  $13.7  million  for  the  year  ended  December  31,  2022  increased,  as  compared  to 
$0.7 million in the same period in 2021, primarily due to an increase in interest rates and a higher average cash, 
cash  equivalents  and  marketable  securities  balance  for  the  year  ended  December  31,  2022,  as  compared  to  the 
same period in 2021.

Cash interest expense

Cash interest expense for the year ended December 31, 2022 and 2021 totaled $1.2 million and $0.7 million, 
respectively. Cash interest expense for the year ended December 31, 2022 primarily included $1.0 million in interest 
incurred with the Notes due 2025 and Notes due 2023, $0.1 million of bank charges and $0.1 million accretion of 
interest  expense  on  contingent  consideration  for  an  acquisition.  Cash  interest  expense  for  the  year  ended 
December 31, 2021 primarily included $0.5 million in coupon interest incurred with the Notes due 2025, Notes due 
2024  and  Notes  due  2023  and  $0.2  million  accretion  of  interest  expense  on  contingent  consideration  for  an 
acquisition.

Non-cash interest expense

Non-cash  interest  expense  of  $8.2  million  for  the  year  ended  December  31,  2022  primarily  related  to  $8.2 
million for the debt discount amortization with the Notes due 2025 and amortization of debt issuance costs with the 
Notes due 2023, Notes due 2025, Notes due 2026 and Notes due 2028. Non-cash interest expense of $44.4 million 
for the year ended December 31, 2021 primarily relates to $44.3 million for the debt discount and amortization of 
debt issuance costs with the Notes due 2024, Notes due 2025, Notes due 2026 and Notes due 2028 and less than 
$0.1 million related to the amortization of debt issuance costs associated with the Notes due 2023.

Other expense, net of $0.4 million for the year ended December 31, 2022 primarily related to $0.9 million net 
loss  due  to  foreign  currency  denominated  monetary  assets  and  liabilities  and  a  $0.3  million  impairment  of  a  note 
receivable, partially offset by a $0.7 million non-cash net gain related to a change in the fair value of debt securities 
and  $0.1  million  in  interest  income.  Other  income,  net  of  $6.1  million  for  the  year  ended  December  31,  2021 
primarily related to a $6.6 million cash gain related to a settlement of debt securities and a $3.0 million non-cash 
gain  related  to  a  change  in  the  fair  value  of  debt  securities,  partially  offset  by  a  $3.5  million  net  loss  related  to  a 
foreign currency exchange and remeasurement.

Enphase Energy, Inc. | 2022 Form 10-K | 55

 
 
 
 
 
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Loss  on  partial  settlement  of  convertible  notes  recorded  for  the  year  ended  December  31,  2021  primarily 
related  to  the  $37.5  million  non-cash  inducement  loss  incurred  on  the  repurchase  of  the  Notes  due  2025,  $9.5 
million non-cash loss on the partial settlement of $217.8 million aggregate principal amount of the Notes due 2025 
and  $9.6  million  non-cash  loss  on  the  partial  settlement  of  $88.1  million  aggregate  principal  amount  of  the  Notes 
due 2024. We did not have any such loss in the year ended December 31, 2022.

Income Tax Benefit (Provision)

Years Ended December 31,

Change in

2022

2021

$

%

(In thousands, except percentages)

Income tax benefit (provision)

$ 

(54,686) 

$ 

24,521 

$ 

(79,207) 

 (323) %

The  income  tax  provision  of  $54.7  million  for  the  year  ended  December  31,  2022  was  primarily  related  to 
higher tax expense in the United States and foreign jurisdictions that are more profitable in 2022, partially offset by 
the tax deduction from employee stock-based compensation.

The  income  tax  benefit  of  $24.5  million  for  the  year  ended  December  31,  2021  was  primarily  related  to  a 
higher tax deduction from employee stock-based compensation, partially offset by a higher tax expense in foreign 
jurisdictions that were profitable in 2021.

Liquidity and Capital Resources 

Sources of Liquidity

As  of  December  31,  2022,  we  had  $1,626.1  million  in  net  working  capital,  including  cash,  cash  equivalents 
and  marketable  securities  of  $1,612.8  million,  of  which  approximately  $1,578.3  million  were  held  in  the  United 
States.  Our  cash,  cash  equivalents  and  marketable  securities  primarily  consist  of  U.S.  treasuries,  money  market 
mutual  funds,  corporate  notes  and  bonds  and  both  interest-bearing  and  non-interest-bearing  deposits,  with  the 
remainder  held  in  various  foreign  subsidiaries.  We  consider  amounts  held  outside  the  United  States  to  be 
accessible and have provided for the estimated U.S. income tax liability associated with our foreign earnings.

Years Ended December 31,

Change in

2022

2021

$

%

Cash, cash equivalents and marketable securities
Total Debt

$ 
$ 

1,612,843  $ 
1,290,357  $ 

(In thousands, except percentages)
596,192 
252,711 

1,016,651  $ 
1,037,646  $ 

 59 %
 24 %

Our  cash,  cash  equivalents  and  marketable  securities  increased  by  $596.2  million  for  the  year  ended 
December  31,  2022,  as  compared  to  the  same  period  in  2021,  primarily  due  to  cash  generated  from  operations, 
partially offset by cash used to fund acquisitions, make investments in private companies, and make payments of 
withholding taxes related to net share settlement of equity awards.

Total  carrying  amount  of  debt  increased  by  $252.7  million  for  the  year  ended  December  31,  2022,  as 
compared  to  the  same  period  in  2021,  primarily  due  to  adoption  of ASU  2020-06  as  of  January  1,  2022,  partially 
offset by repayment of the Notes due 2024 and partial repayment of the Notes due 2025. 

We had net operating loss carryforwards for California income tax purposes of approximately $10.4 million, as 
well  as  federal  tax  credit  carryforwards  and  state  research  credit  carryforwards  of  approximately  $7.0  million  and 
$18.0  million,  respectively,  as  of  December  31,  2022.  We  have  utilized  all  of  our  federal  net  operating  loss 
carryforwards and expect our cash paid for taxes in the United States will substantially increase in 2023.

We  expect  that  our  principal  short-term  (over  the  next  12  months)  and  long-term  cash  needs  related  to  our 
operations will be used to fund working capital, strategic investment, acquisitions, payment of withholding taxes for 
net  share  settlement  of  equity  awards  and  purchase  of  property  and  equipment,  such  as  production  lines  at  our 
contract manufacturing partners. We plan to fund any cash requirements from our existing cash, cash equivalents 
and  marketable  securities  on  hand,  and  cash  generated  from  operations.  We  anticipate  that  access  to  the  debt 
market will be more limited compared to prior years as interest rates have increased and are expected to continue 
to  rise.  Our  ability  to  obtain  debt  or  any  other  additional  financing  that  we  may  choose  to,  or  need  to,  obtain  will 

Enphase Energy, Inc. | 2022 Form 10-K | 56

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depend on, among other things, our development efforts, business plans, operating performance and the condition 
of the capital markets at the time we seek financing.

Repurchase of Common Stock. In May 2021, our board of directors authorized a share repurchase program 
(the “2021 Repurchase Program”) pursuant to which we may repurchase up to an additional $500.0 million of our 
common stock. The repurchases will be funded from available working capital and may be executed from time to 
time, subject to general business and market conditions and other investment opportunities, through open market 
purchases or privately negotiated transactions, including through Rule 10b5-1 plans. Such purchases are expected 
to  continue  through  May  2024  unless  otherwise  extended  or  shortened  by  our  board  of  directors.  As  of 
December  31,  2022,  we  have  approximately  $200.0  million  remaining  for  repurchase  of  shares  under  the  2021 
Repurchase Program. The IRA enacted in August 2022 includes a 1% excise tax on corporate stock repurchases in 
tax  years  beginning  after  December  31,  2022;  in  consideration  of  any  further  stock  repurchases,  we  intend  to 
evaluate  the  impact  of  the  IRA’s  1%  excise  tax  on  corporate  stock  repurchases  in  tax  years  beginning  after 
December 31, 2022.

Convertible  Notes.  In August  2018,  we  issued  $65.0  million  aggregate  principal  amount  of  4.0%  Notes  due 
2023 of which $5.0 million aggregate principal amount remained outstanding as of December 31, 2022. The Notes 
due 2023 mature on August 1, 2023 with interest payable semi-annually on February 1 and August 1 of each year. 
In  March  2020,  we  issued  $320.0  million  aggregate  principal  amount  of  0.25%  Notes  due  2025  of  which  $102.2 
million remained outstanding as of December 31, 2022. The Notes due 2025 mature on March 1, 2025 with interest 
payable  semi-annually  on  March  1  and  September  1  of  each  year.  In  March  2021,  we  issued  $632.5  million  and 
$575.0  million  in  aggregate  principal  amount  of  0%  Notes  due  2026  and  0%  Notes  due  2028,  respectively.  Upon 
conversion of the Notes due 2025, Notes due 2026 and Notes due 2028, we will pay cash equal to the aggregate 
principal amount of the Notes of such series to be converted, and, at our election, will pay or deliver cash and/or 
shares  of  our  common  stock  for  the  amount  of  our  conversion  obligation  in  excess  of  the  aggregate  principal 
amount  of  the  Notes  of  such  series. The  sale  price  condition  for  the  Notes  due  2025  was  met  during  the  quarter 
ended  December  31,  2022,  and,  as  a  result,  holders  may  convert  their  Notes  due  2025  at  any  time  during  the 
quarter ending March 31, 2023. If all of the holders of the Notes due 2025 converted their Notes due 2025 during 
this period, we would be obligated to settle the $102.2 million principal amount of the Notes due 2025 due in cash. 
We  believe  that  our  cash  provided  by  operating  activities,  our  existing  cash,  cash  equivalents  and  marketable 
securities will be sufficient to meet our anticipated cash needs should the holders choose to convert their Notes due 
2025 during the quarter ending March 31, 2023 or upon settlement of the Notes due 2023 on its maturity on August 
1, 2023. As of December 31, 2022, substantially all of our Notes remained outstanding. Refer to Note 12. “Debt,” in 
Part II, Item 8 of this Annual Report on Form 10-K for more information on our outstanding notes.

Operating  Leases.  We  have  entered  into  various  non-cancelable  operating  leases  primarily  for  our  facilities 
with original lease periods expiring through the year 2032, with the most significant leases relating to our offices in 
Petaluma, California and Bengaluru, India. As of December 31, 2022, we have total operating lease obligations of 
$29.0 million recorded on our consolidated balance sheet.

Other Material Cash Requirements. As of December 31, 2022, we have open purchase obligations of $589.3 
million related to component inventory that our primary contract manufacturers procure on our behalf in accordance 
with our production forecast as well as other inventory related purchase commitments. The timing of purchases in 
future  periods  could  differ  materially  from  estimates  presented  above  due  to  fluctuations  in  demand  requirements 
related to varying sales levels as well as changes in economic conditions.

Cash Flows. The following table summarizes our cash flows for the periods presented:

Net cash provided by operating activities
Net cash used in investing activities
Net cash provided by (used in) financing activities
Effect of exchange rate changes on cash

Net increase (decrease) in cash and cash equivalents

Years Ended December 31,

2022

2021

2020

(In thousands)

$ 

$ 

744,817  $ 
(371,906)   
(17,126)   
(1,857)   
353,928  $ 

352,028  $ 

(1,219,547)   
309,411 

(1,955)   
(560,063)  $ 

216,334 
(25,568) 
191,678 
826 
383,270 

Enphase Energy, Inc. | 2022 Form 10-K | 57

 
 
 
 
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Cash  from  operations  could  be  affected  by  various  risks  and  uncertainties,  including,  but  not  limited  to,  the 
continued effects of COVID-19, the ongoing conflict in Ukraine, new regulations and other risk factors discussed in 
Part I, Item IA, Risk Factors of this Annual Report on Form 10-K. We believe that our cash flow from operations with 
existing cash, cash equivalents and marketable securities will be sufficient to meet our anticipated cash needs for 
working capital and capital expenditures for at least the next 12 months and thereafter for the foreseeable future, 
including our ability to make payments on our outstanding debt.

Our future capital requirements will depend on many factors, including our growth rate, the timing and extent 
of spending to support development efforts, the expansion of sales and marketing activities, the introduction of new 
and enhanced products, the costs to acquire or invest in complementary businesses and technologies, the costs to 
ensure  access  to  adequate  manufacturing  capacity,  the  continuing  market  acceptance  of  our  products  and 
macroeconomic events, such as the impacts from the COVID-19 pandemic, inflation, increase in interest rates and 
the ongoing conflict in Ukraine. We may also choose to seek additional equity or debt financing. In the event that 
additional financing is required from outside sources, we may not be able to raise it on terms acceptable to us or at 
all. If we are unable to raise additional capital when desired, our business, operating results and financial condition 
may be adversely affected.

Cash Flows from Operating Activities

Cash  flows  from  operating  activities  consisted  of  our  net  income  adjusted  for  certain  non-cash  reconciling 
items,  such  as  stock-based  compensation  expense,  non-cash  interest  expense,  change  in  the  fair  value  of  debt 
securities, deferred income taxes, depreciation and amortization, asset impairment, and changes in our operating 
assets  and  liabilities.  Net  cash  provided  by  operating  activities  increased  by  $392.8  million  for  the  year  ended 
December 31, 2022, as compared to the same period in 2021, primarily due to an increase in our gross profit as a 
result of increased revenue, partially offset by higher operating expenses as we continue to invest in the long-term 
growth of our business.

Cash Flows from Investing Activities

For the year ended December 31, 2022, net cash used in investing activities of $371.9 million was primarily 
from  the  purchase  of  $907.4  million  of  marketable  securities,  $62.2  million  net  cash  used  to  acquire  GreenCom, 
SolarLeadFactory and ClipperCreek, $46.4 million used in purchases of test and assembly equipment to expand our 
supply capacity, related facility improvements and information technology enhancements, including capitalized costs 
related  to  internal-use  software  and  $16.0  million  used  to  invest  in  private  companies,  partially  offset  by  $660.1 
million sale and maturities of marketable securities.

For the year ended December 31, 2021, net cash used in investing activities of $1,219.5 million was primarily 
from the purchase of $935.0 million of marketable securities, $58.0 million from the investment in a debt security, 
$235.7 million, net cash used to acquire ClipperCreek, 365 Pronto, Sofdesk and DIN Engineer Service LLP’s solar 
design  services  business,  and  $52.3  million  used  in  purchases  of  test  and  assembly  equipment  to  expand  our 
supply capacity, related facility improvements and information technology enhancements, including capitalized costs 
related  to  internal-use  software,  partially  offset  by  approximately  $35.0  million  maturities  of  marketable  securities 
and $26.6 million of settlement of our investment in a private company.

Cash Flows from Financing Activities

For the year ended December 31, 2022, net cash used by financing activities of approximately $17.1 million 
was  primarily  from  the  payment  of  $27.5  million  in  employee  withholding  taxes  related  to  net  share  settlement  of 
equity awards, partially offset by $10.4 million net proceeds from employee stock option exercises and purchases 
under our employee stock purchase plan.

For  the  year  ended  December  31,  2021,  net  cash  provided  by  financing  activities  of  approximately 
$309.4  million  was  primarily  from  $1,188.4  million  in  net  proceeds  from  the  issuance  of  the  Notes  due  2028  and 
Notes due 2026, $220.8 million from the sale of warrants related to the Notes due 2028 and Notes due 2026 and 
approximately $7.5 million in net proceeds from employee stock option exercises, partially offset by $286.2 million 
purchase of convertible note hedge related to the Notes due 2028 and Notes due 2026, $290.2 million cash paid to 
settle  both  $88.1  million  in  aggregate  principal  amount  of  the  Notes  due  2024  and  $217.8  million  in  aggregate 
principal amount of the Notes due 2025, $500.0 million paid to repurchase shares of our common stock under our 
repurchase  programs  approved  by  our  board  of  directors,  the  payment  of  $29.1  million  in  employee  withholding 
taxes  related  to  net  share  settlement  of  equity  awards,  and  $1.7  million  of  repayment  on  the  sale  of  long-term 
financing receivables.

Enphase Energy, Inc. | 2022 Form 10-K | 58

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Critical Accounting Estimates 

The  preparation  of  our  consolidated  financial  statements  and  related  notes  requires  us  to  make  judgments, 
estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses, fair value 
of  acquired  intangible  assets  and  goodwill,  useful  lives  of  acquired  intangible  assets  and  related  disclosure  of 
contingent assets and liabilities. The SEC has defined a company’s critical accounting policies as the ones that are 
most  important  to  the  portrayal  of  a  company’s  financial  condition  and  results  of  operations,  and  which  require  a 
company to make its most difficult and subjective judgments. Based on this definition, we have identified the critical 
accounting policies and judgments addressed below. 

We have based our estimates on historical experience and on various other assumptions that are believed to 
be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying 
values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these 
estimates  due  to  risks  and  uncertainties,  including  uncertainty  in  the  current  economic  environment  due  to  the 
global impact of COVID-19 and the conflict in Ukraine. As of the date of issuance of these financial statements, we 
are  not  aware  of  any  specific  event  or  circumstance  that  would  require  us  to  update  our  estimates,  judgments  or 
revise  the  carrying  value  of  our  assets  or  liabilities.  For  a  description  of  our  significant  accounting  policies,  see 
Note 2. “Summary of Significant Accounting Policies,” of the notes to consolidated financial statements included in 
Part II, Item 8 of this Annual Report on Form 10-K. An accounting policy is considered to be critical if it requires an 
accounting  estimate  to  be  made  based  on  assumptions  about  matters  that  are  highly  uncertain  at  the  time  the 
estimate  is  made,  and  if  different  estimates  that  reasonably  could  have  been  used,  or  changes  in  the  accounting 
estimates  that  are  reasonably  likely  to  occur  periodically,  could  materially  impact  the  consolidated  financial 
statements.  We  believe  the  following  critical  accounting  policies  reflect  the  more  significant  estimates  and 
assumptions used in the preparation of our consolidated financial statements.

Revenue Recognition 

We generate revenue from sales of our solutions, which include microinverter units and related accessories, 
an  IQ  Gateway,  the  cloud-based  Enlighten  monitoring  service,  storage  solutions,  EV  charging  solutions,  design, 
proposal, permitting and lead generation services, as well as a platform matching cleantech asset owners to a local 
and on-demand workforce of service providers, to distributors, large installers, OEMs and strategic partners.

Revenues are recognized when control of the promised goods or services are transferred to our customers in 
an amount that reflects the consideration that is expected to be received in exchange for those goods or services. 
We generate all of our revenues from contracts with our customers. A description of principal activities from which 
we generate revenues are follows. 

•

•

Products  Delivered  at  a  Point  in  Time.  We  sell  our  products  and  professional  services  to  customers  in 
accordance  with  the  terms  of  the  related  customer  contracts.  We  generate  revenues  from  sales  of  our 
solutions,  which  include  microinverter  units  and  related  accessories,  storage  solutions,  EV  charging 
solutions,  design,  proposal,  permitting  and  lead  generation  services,  as  well  as  a  platform  matching 
cleantech  asset  owners  to  a  local  and  on-demand  workforce  of  service  providers  to  distributors,  large 
installers,  OEMs  and  strategic  partners.  Microinverter  units,  microinverter  accessories,  storage  and  EV 
solutions, design proposal, permitting and lead generation services, as well as completed work orders on 
our platform matching cleantech asset owners to a local and on-demand workforce of service providers, 
are delivered to customers at a point in time, and we recognize revenue for these products or professional 
services  when  we  transfer  control  of  the  product  or  professional  services  to  the  customer,  which  is 
generally upon product shipment or service delivery, respectively.

Products Delivered Over Time. The sale of an IQ Gateway includes our Enlighten cloud-based monitoring 
service.  The  full  consideration  for  these  products  represents  a  single  performance  obligation  and  is 
deferred  at  the  sale  date  and  recognized  over  the  estimated  service  period  of  6.5  years.  We  also  sell 
certain  communication  accessories  that  contain  a  service  performance  obligation  to  be  delivered  over 
time. The revenue from these products is recognized over the related service period, which is typically 5 
or  12  years.  The  subscription  services  revenue  generated  from  each  customer’s  subscription  to  our 
design and proposal service is recognized on a ratable basis over the contract term beginning on the date 
that  our  service  is  made  available  to  the  customer.  The  subscription  contracts  are  generally  3  to  12 
months in length and billed in advance.

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When we sell a product with more than one performance obligation, such as our IQ Combiner, which includes 
both hardware and the IQ Gateway, the total consideration is allocated to these performance obligations based on 
their relative standalone selling prices.

We  record  certain  contra  revenue  promotions  as  variable  consideration  and  recognize  these  promotions  at 

the time the related revenue is recorded.

We  record  upfront  contract  acquisition  costs,  such  as  sales  commissions,  to  be  capitalized  and  amortized 
over the estimated life of the asset. For contracts that have a duration of less than one year, we follow the Topic 606 
practical  expedient  and  expense  these  costs  when  incurred.  Commissions  related  to  the  sale  of  monitoring 
hardware and services are capitalized and amortized over the period of the associated revenue.

Refer to Note 3. “Revenue Recognition,” of the notes to consolidated financial statements included in Part II, 

Item 8 of this Annual Report on Form 10-K for additional information related to revenue recognition.

Inventory

Inventory  is  valued  at  the  lower  of  cost  or  market.  Market  is  current  replacement  cost  (by  purchase  or  by 
reproduction,  dependent  on  the  type  of  inventory).  In  cases  where  market  exceeds  net  realizable  value  (i.e., 
estimated selling price less reasonably predictable costs of completion and disposal), inventories are stated at net 
realizable  value.  Market  is  not  considered  to  be  less  than  net  realizable  value  reduced  by  an  allowance  for  an 
approximately normal profit margin. We determine cost on a first-in first-out basis. Certain factors could affect the 
realizable  value  of  its  inventory,  including  customer  demand  and  market  conditions.  Management  assesses  the 
valuation  on  a  quarterly  basis  and  writes  down  the  value  for  any  excess  and  obsolete  inventory  based  upon 
expected  demand,  anticipated  sales  price,  effect  of  new  product  introductions,  product  obsolescence,  customer 
concentrations,  product  merchantability  and  other  factors.  Inventory  write-downs  are  equal  to  the  difference 
between the cost of inventories and market.

Fair Value of Financial Instruments 

The fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a 
liability in an orderly transaction between market participants at the measurement date. The carrying amounts of our 
cash,  cash  equivalents  and  restricted  cash,  accounts  receivable,  accounts  payable  and  accrued  liabilities 
approximate  fair  value  because  of  the  short  maturity  of  those  instruments.  Equity  investments  with  readily 
determinable  fair  value  are  carried  at  fair  value  based  on  quoted  market  prices  or  estimated  based  on  market 
conditions and risks existing at each balance sheet date. Equity investments without readily determinable fair value 
are measured at cost less impairment, and are adjusted for observable price changes in orderly transactions for an 
identical or similar investment of the same issuer.

Convertible Note Derivatives

In  March  2020,  we  issued  $320.0  million  aggregate  principal  amount  of  the  Notes  due  2025.  Concurrently 
with the issuance of the Notes due 2025, we entered into privately-negotiated convertible note hedge and warrant 
transactions which in combination are intended to reduce the potential dilution from the conversion of the Notes due 
2025. We could not elect to issue the shares of common stock upon settlement of the Notes due 2025 or convertible 
note  hedge  or  warrant  transactions  due  to  insufficient  authorized  share  capital.  As  a  result,  the  embedded 
conversion  option  and  warrants  were  accounted  for  as  a  derivative  liabilities  and  convertible  notes  hedge  as 
derivative asset and a gain (or loss) was reported in other expense, net in our consolidated statement of operations 
to  the  extent  the  valuation  changed  from  the  date  of  issuance  of  the  Notes  due  2025.  On  May  20,  2020,  at  our 
annual  meeting  of  stockholders,  the  stockholders  approved  an  amendment  to  its  certificate  of  incorporation  to 
increase the number of authorized shares of our common stock. As a result, we are now able to settle the Notes 
due 2025, convertible notes hedge and warrants through payment or delivery, as the case may be, of cash, shares 
of  its  common  stock  or  a  combination  thereof,  at  our  election.  Accordingly,  on  May  20,  2020,  the  embedded 
derivative  liability,  convertible  notes  hedge  and  warrants  liability  were  remeasured  at  a  fair  value  and  were  then 
reclassified to additional paid-in-capital in our condensed consolidated balance sheet in the second quarter of 2020 
and  are  no  longer  remeasured  as  long  as  they  continue  to  meet  the  conditions  for  equity  classification.  As  of 
December  31,  2022  and  2021,  we  do  not  have  any  convertible  note  derivatives.  Refer  to  Note  12.  “Debt,”  of  the 
notes  to  consolidated  financial  statements  included  in  Part  II,  Item  8  of  this  Annual  Report  on  Form  10-K  for 
additional information.

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Warranty Obligations

Our warranty accrual provides for the replacement of microinverter units, AC Battery storage solutions and IQ 
Gateway that fail during the product’s warranty term. The warranty term related to microinverter units is 15 years for 
first  and  second  generation  microinverters  and  up  to  25  years  for  subsequent  generation  microinverters.  The 
warranty term for AC Battery storage solutions and IQ Gateway is 10 years and 5 years, respectively. On a quarterly 
basis, we employ a consistent, systematic and rational methodology to assess the adequacy of our warranty liability. 
This  assessment  includes  updating  all  key  estimates  and  assumptions  for  each  generation  of  product,  based  on 
historical  results,  trends  and  the  most  current  data  available  as  of  the  filing  date.  The  key  estimates  and 
assumptions  used  in  the  warranty  liability  are  thoroughly  reviewed  by  management  on  a  quarterly  basis. The  key 
estimates used by us to estimate our warranty liability are: (1) the number of units expected to fail and returned for 
replacement over time (i.e., return rate); and (2) the per unit cost of replacement units, including outbound shipping 
and limited labor costs, expected to be incurred to replace failed units over time (i.e., replacement cost).

Estimated  Return  Rates  —  Our  Quality  and  Reliability  department  has  primary  responsibility  to  determine 
the  estimated  return  rates  for  each  generation  of  product.  To  establish  initial  return  rate  estimates  for  each 
generation  of  product,  our  quality  engineers  use  a  combination  of  industry  standard  Mean  Time  Between  Failure 
estimates  for  individual  components  contained  in  that  generation  of  product,  third-party  data  collected  on  similar 
equipment deployed in outdoor environments similar to those in which our product are installed, and rigorous long 
term reliability and accelerated life cycle testing which simulates the service life of the product in a short period of 
time. As units are deployed into operating environments, we continue to monitor product performance through our 
Enlighten monitoring platform. It typically takes three to nine months between the date of sale and date of end-user 
installation. Consequently, our ability to monitor actual failures of units sold similarly lags by three to nine months. 
When a product fails and is returned, we perform diagnostic root cause failure analysis to understand and isolate 
the underlying mechanism(s) causing the failure. We then use the results of this analysis (combined with the actual, 
cumulative  performance  data  collected  on  those  units  prior  to  failure  through  Enlighten)  to  draw  conclusions  with 
respect to how or if the identified failure mechanism(s) will impact the remaining units deployed in the installed base. 

As the vast majority of our microinverters have been sold to end users for residential applications, we believe 
that warranty return rates will be affected by changes over time in residential home ownership because we expect 
that  subsequent  homeowners  are  less  likely  to  file  return  than  the  homeowners  who  originally  purchase  the 
microinverters.

Estimated  Replacement  Costs  —  Three  factors  are  considered  in  our  analysis  of  estimated  replacement 
cost:  (1)  the  estimated  cost  of  replacement  products;  (2)  the  estimated  cost  to  ship  replacement  products  to  end 
users;  and  (3)  the  estimated  labor  reimbursement  expected  to  be  paid  to  third-party  installers  performing 
replacement  services  for  the  end  user.  Because  our  warranty  provides  for  the  replacement  of  defective  products 
over  long  periods  of  time  (typically  between  5  to  25  years,  depending  on  the  product  and  the  generation  of  that 
product  purchased),  the  estimated  per  unit  cost  of  current  and  future  product  generations  is  considered  in  the 
estimated  replacement  cost.  Estimated  costs  to  ship  replacement  units  are  based  on  observable,  market-based 
shipping costs paid by us to third-party freight carriers. We have a separate program that allows third-party installers 
to claim fixed-dollar reimbursements for labor costs they incur to replace failed units for a limited time from the date 
of original installation. Included in our estimated replacement cost is an analysis of the number of fixed-dollar labor 
reimbursements expected to be claimed by third-party installers over the limited offering period. 

In addition to the key estimates noted above, we also compare actual warranty results to expected results and 
evaluate  any  significant  differences.  We  may  make  additional  adjustments  to  the  warranty  provision  based  on 
performance trends or other qualitative factors. If actual return rates, or replacement costs differ from our estimates 
in future periods, changes to these estimates may be required, resulting in increases or decreases in our warranty 
obligations. Such increases or decreases could be material.

Fair Value Option for Microinverters and Other Products Sold Since January 1, 2014

Our  warranty  obligations  related  to  products  sold  since  January  1,  2014  provide  us  the  right,  but  not  the 
requirement,  to  assign  our  warranty  obligations  to  a  third  party.  Under  Accounting  Standards  Codification  825, 
“Financial  Instruments”  (also  referred  to  as  the  “fair  value  option”),  an  entity  may  choose  to  elect  the  fair  value 
option  for  such  warranties  at  the  time  it  first  recognizes  the  eligible  item.  We  made  an  irrevocable  election  to 
account for all eligible warranty obligations associated with products sold since January 1, 2014 at fair value. This 
election  was  made  to  reflect  the  underlying  economics  of  the  time  value  of  money  for  an  obligation  that  will  be 
settled over an extended period of up to 25 years.

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We estimate the fair value of warranty obligations by calculating the warranty obligations in the same manner 
as for sales prior to January 1, 2014 and applying an expected present value technique to that result. The expected 
present value technique, an income approach, converts future amounts into a single current discounted amount. In 
addition to the key estimates of return rates, and replacement costs, we used certain inputs that are unobservable 
and  significant  to  the  overall  fair  value  measurement.  Such  additional  assumptions  included  compensation 
comprised  of  a  profit  element  and  risk  premium  required  of  a  market  participant  to  assume  the  obligation  and  a 
discount rate based on our credit-adjusted risk-free rate. Refer to Note 11. “Fair Value Measurements,” of the notes 
to  consolidated  financial  statements  included  in  Part  II,  Item  8  of  this Annual  Report  on  Form  10-K  for  additional 
information.

Commitments and Contingencies

In  the  normal  course  of  business,  we  are  subject  to  loss  contingencies  and  loss  recoveries,  such  as  legal 
proceedings  and  claims  arising  out  of  our  business  as  well  as  tariff  refunds. An  accrual  for  a  loss  contingency  or 
loss recovery is recognized when it is probable and the amount of loss or recovery can be reasonably estimated. 
Refer to Note 13. “Commitments and Contingencies,” of the notes to consolidated financial statements included in 
Part II, Item 8 of this Annual Report on Form 10-K for additional information.

Business Combinations

Assets acquired and liabilities assumed as part of a business acquisition are generally recorded at their fair 
value at the date of acquisition. The excess of purchase price over the fair value of assets acquired and liabilities 
assumed is recorded as goodwill. Determining fair value of identifiable assets, particularly intangibles, and liabilities 
acquired also requires the Company to make estimates, which are based on all available information and in some 
cases  assumptions  with  respect  to  the  timing  and  amount  of  future  revenues  and  expenses  associated  with  an 
asset. Accounting  for  business  acquisitions  requires  the  Company  to  make  judgments  as  to  whether  a  purchase 
transaction  is  a  multiple  element  contract,  meaning  that  it  includes  other  transaction  components.  This  judgment 
and determination affect the amount of consideration paid that is allocable to assets and liabilities acquired in the 
business purchase transaction.

Intangible Assets

Intangible assets include patents and other purchased intangible assets. Intangible assets with finite lives are 
amortized on a straight-line basis, with estimated useful lives ranging from 5 to 9 years. Indefinite-lived intangible 
assets  are  tested  for  impairment  annually  and  are  also  tested  for  impairment  between  annual  tests  if  an  event 
occurs  or  circumstances  change  that  would  indicate  that  the  carrying  amount  may  be  impaired.  Intangible  assets 
with finite lives are tested for impairment whenever events or circumstances indicate that the carrying amount of an 
asset  (asset  group)  may  not  be  recoverable. An  impairment  loss  is  recognized  when  the  carrying  amount  of  an 
asset exceeds the estimated undiscounted cash flows used in determining the fair value of the asset. The amount of 
the impairment loss to be recorded is calculated by the excess of the asset’s carrying value over its fair value. Fair 
value is generally determined using a discounted cash flow analysis. There was no impairment of intangible assets 
in any of the years presented.

Income Taxes

We record income taxes using the asset and liability method, which requires the recognition of deferred tax 
assets and liabilities for the expected tax consequences of temporary differences between the tax bases of assets 
and liabilities for financial reporting purposes and amounts recognized for income tax purposes. In estimating future 
tax consequences, generally all expected future events other than enactments or changes in the tax law or rates are 
considered.  Valuation  allowances  are  provided  when  necessary  to  reduce  deferred  tax  assets  to  the  amount 
expected to be realized.

We  assess  the  realizability  of  the  deferred  tax  assets  to  determine  release  of  valuation  allowance  as 
necessary.  In  the  event  we  determine  that  it  is  more  likely  than  not  that  we  would  be  able  to  realize  deferred  tax 
assets in the future in excess of our net recorded amount, an adjustment to the valuation allowance for the deferred 
tax asset would increase income in the period such determination was made. Likewise, should it be determined that 
additional  amounts  of  the  net  deferred  tax  asset  will  not  be  realized  in  the  future,  an  adjustment  to  increase  the 
deferred tax asset valuation allowance will be charged to income in the period such determination is made.

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We  operate  in  various  tax  jurisdictions  and  are  subject  to  audit  by  various  tax  authorities.  We  follow 
accounting for uncertainty in income taxes, which requires that the tax effects of a position be recognized only if it is 
“more  likely  than  not”  to  be  sustained  based  solely  on  its  technical  merits  as  of  the  reporting  date.  We  consider 
many  factors  when  evaluating  and  estimating  its  tax  positions  and  tax  benefits,  which  may  require  periodic 
adjustments and which may not accurately anticipate actual outcomes.

Item 7A.  Quantitative and Qualitative Disclosures About Market Risk

Foreign Currency Exchange Risk

We  operate  and  conduct  business  in  foreign  countries  where  our  foreign  entities  use  the  local  currency  as 
their respective functional currency and, as a result, are exposed to movements in foreign currency exchange rates. 
More  specifically,  we  face  foreign  currency  exposure  primarily  from  the  effect  of  fluctuating  exchange  rates  on 
payables  and  receivables  relating  to  transactions  that  are  denominated  in  euros,  the  Indian  Rupee  and  the 
Australian,  Canadian  and  New  Zealand  dollars.  These  payables  and  receivables  primarily  arise  from  sales  to 
customers and intercompany transactions. We also face currency exposure that arises from translating the results 
of  our  European,  Indian,  Australian,  Canadian  and  New  Zealand  operations,  including  sales  and  marketing  and 
research and development expenses, to the U.S. dollar at exchange rates that have fluctuated from the beginning of 
a reporting period. We are a net receiver of euros, and therefore negatively affected by a strengthening of the U.S. 
dollar  relative  to  the  euro  and,  conversely  benefit  from  a  weakening  of  the  U.S.  dollar  relative  to  the  euro.  Sales 
denominated  in  the  euro  as  a  percentage  of  total  revenue  was  17%,  11%  and  10%  during  the  years  ended 
December 31, 2022, 2021 and 2020, respectively.

The effect of a hypothetical 10% adverse change in foreign exchange rates on monetary assets and liabilities 
on  December  31,  2022  would  not  be  material  to  our  financial  condition  or  results  of  operations.  To  date,  foreign 
currency  transaction  gains  and  losses  and  exchange  rate  fluctuations  have  not  been  material  to  our  financial 
statements, and we have not engaged in any foreign currency hedging transactions.

We do not enter into derivative financial instruments for trading or speculative purposes. We did not enter into 
any foreign currency forward contracts during 2022 and 2021. Any foreign currency forward contracts entered in the 
future are accounted for as derivatives whereby the fair value of the contracts is reported as other current assets or 
current  liabilities,  and  gains  and  losses  resulting  from  changes  in  the  fair  value  are  reported  in  other  income 
(expense), net, in the accompanying consolidated statements of operations.

Credit Risk

Financial  instruments  that  subject  us  to  concentrations  of  credit  risk  consist  primarily  of  cash,  cash 
equivalents,  marketable  securities,  accounts  receivable  and  derivative  financial  instruments.  We  maintain  a 
substantial  portion  of  our  cash  balances  in  non-interest-bearing  and  interest-bearing  marketable  securities  and 
money  market  accounts.  The  derivative  financial  instruments  expose  us  to  credit  risk  to  the  extent  that  the 
counterparties may be unable to meet the terms of the arrangement. We mitigate this credit risk by transacting with 
major  financial  institutions  with  high  credit  ratings.  We  are  not  required  to  pledge,  and  are  not  entitled  to  receive, 
cash  collateral  related  to  these  derivative  instruments.  We  do  not  enter  into  derivative  contracts  for  trading  or 
speculative  purposes.  Our  net  revenues  are  primarily  concentrated  among  a  limited  number  of  customers.  We 
monitor the financial condition of our customers and perform credit evaluations whenever considered necessary and 
maintain an allowance for doubtful accounts for estimated potential credit losses.

Interest Rate Risk

We  had  cash,  cash  equivalents  and  marketable  securities  of  $1,612.8  million  and  $1,016.7  million  as  of 
December 31, 2022 and 2021, respectively, consisting of both non-interest bearing and interest-bearing marketable 
securities  and  money  market  accounts.  Such  interest-earning  instruments  carry  a  degree  of  interest  rate  risk,  but 
the risk is limited due to the duration of our short term investments. To date, fluctuations in interest income have not 
been  significant.  We  do  not  enter  into  investments  for  trading  or  speculative  purposes  and  have  not  used  any 
derivative financial instruments to manage our interest rate risk exposure. We have not been exposed to, nor do we 
anticipate being exposed to, material risks due to changes in interest rates.

Our cash flow exposure due to changes in interest rates related to our debt is limited as the Notes due 2025 
and Notes due 2023 have fixed interest rates of 0.25% and 4.0%, respectively. Additionally, the Notes due 2028 and 
Notes due 2026 carry a fixed interest rate of 0%. The fair value of the Convertible Notes may increase or decrease 
for various reasons, including fluctuations in the market price of our common stock, fluctuations in market interest 

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rates  and  fluctuations  in  general  economic  conditions.  Based  upon  the  quoted  market  price  as  of  December  31, 
2022, the fair value of the Notes due 2028, Notes due 2026 and Notes due 2025 was $667.0 million, $711.6 million 
and $417.2 million, respectively. The Notes due 2023 are not actively traded.

A  hypothetical  10%  change  in  interest  rates  during  any  of  the  periods  presented  would  not  have  had  a 

material impact on our financial statements.

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Item 8.  Financial Statements and Supplementary Data

ENPHASE ENERGY, INC.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

AS OF DECEMBER 31, 2022 AND 2021,

AND FOR THE YEARS ENDED DECEMBER 31, 2022, 2021 AND 2020

Report of Independent Registered Public Accounting Firm (PCAOB ID No. 34).

Consolidated Balance Sheets

Consolidated Statements of Operations

Consolidated Statements of Comprehensive Income

Consolidated Statements of Stockholders’ Equity

Consolidated Statements of Cash Flows

Notes to Consolidated Financial Statements

Page
66

69

70

71

72

74

76

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the stockholders and the Board of Directors of Enphase Energy, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Enphase Energy, Inc., and subsidiaries 
(the  "Company")  as  of  December  31,  2022,  and  2021,  the  related  consolidated  statements  of  operations, 
comprehensive  income,  stockholders'  equity,  and  cash  flows,  for  each  of  the  three  years  in  the  period  ended 
December 31, 2022, and the related notes (collectively referred to as the "financial statements"). In our opinion, the 
financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 
2022, and 2021, and the results of its operations and its cash flows for each of the three years in the period ended 
December 31, 2022, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board 
(United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2022, based 
on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring 
Organizations  of  the  Treadway  Commission  and  our  report  dated  February  10,  2023,  expressed  an  unqualified 
opinion on the Company's internal control over financial reporting.

Basis for Opinion

These  financial  statements  are  the  responsibility  of  the  Company's  management.  Our  responsibility  is  to 
express  an  opinion  on  the  Company's  financial  statements  based  on  our  audits.  We  are  a  public  accounting  firm 
registered with the PCAOB and are required to be independent with respect to the Company in accordance with the 
U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission 
and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we 
plan  and  perform  the  audit  to  obtain  reasonable  assurance  about  whether  the  financial  statements  are  free  of 
material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks 
of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that 
respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and 
disclosures  in  the  financial  statements.  Our  audits  also  included  evaluating  the  accounting  principles  used  and 
significant  estimates  made  by  management,  as  well  as  evaluating  the  overall  presentation  of  the  financial 
statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current-period audit of the financial 
statements that were communicated or required to be communicated to the audit committee and that (1) relate to 
accounts  or  disclosures  that  are  material  to  the  financial  statements  and  (2)  involved  our  especially  challenging, 
subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion 
on  the  financial  statements,  taken  as  a  whole,  and  we  are  not,  by  communicating  the  critical  audit  matter  below, 
providing separate opinions on the critical audit matter or on the accounts or disclosures to which they relate.

Warranty Obligations – Microinverters - Refer to Notes 2, 10 and 11 to the consolidated financial statements

Critical Audit Matter Description

The  Company’s  warranty  obligation  provides  for  the  replacement  of  microinverter  units  that  fail  during  the 
product’s  warranty  term  of  15  to  25  years.  The  estimated  warranty  liability  is  developed  for  each  generation  of 
product and requires management to estimate, among other factors, (1) the number of units expected to fail and be 
returned  for  replacement  over  time  (i.e.,  return  rate);  and  (2)  the  per  unit  cost  of  replacement  units,  including 
outbound  shipping  and  limited  labor  costs,  expected  to  be  incurred  to  replace  failed  units  over  time  (i.e., 
replacement  cost),  all  of  which  consider  historical  results,  trends  and  the  most  current  data  available  when  the 
financial statements are available to be issued. The Company’s warranty liability for all microinverter units sold after 
January  1,  2014,  is  measured  at  fair  value  by  applying  both  of  the  following  to  the  liability  that  results  from  the  2 
factors  discussed  above:  (1)  compensation  comprised  of  a  profit  element  and  risk  premium  required  for  a  market 
participant to assume the obligation and (2) a discount rate based on the Company’s credit adjusted risk free rate.

Enphase Energy, Inc. | 2022 Form 10-K | 66

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Given the subjectivity of estimating the number of units expected to fail and be returned for replacement over 
time, performing audit procedures to evaluate whether the expected failure rates were appropriately determined as 
of December 31, 2022, required a high degree of auditor judgment and an increased extent of effort.

How the Critical Audit Matter Was Addressed in the Audit

Our  audit  procedures  related  to  the  estimated  failure  and  warranty  return  rates  used  in  determining  the 

warranty obligation included the following, among others:

– We tested the effectiveness of controls utilized in the review of the warranty obligation calculation, including 

controls over the determination of estimated failure and warranty return rates.

– We  evaluated  the  methods  and  assumptions  used  by  management  to  estimate  the  failure  and  warranty 

return rates used as part of the calculation of the warranty obligation by:

•

•

•

•

Testing the underlying data that served as the basis for the Company’s failure and warranty return 
rate  analysis,  which  include  historical  warranty  returns  and  historical  product  sales,  in  order  to 
evaluate the various assumptions and historical data consisting of failure of individual components 
contained in its microinverters.

Reviewing  third  party  data  compiled  on  similar  products  in  order  to  challenge  management’s 
assumptions and identify supporting or contradictory evidence.

Comparing  management’s  prior-year  assumptions  of  expected  failures  to  actual  warranty  returns 
received  during  the  current  year  to  identify  potential  bias  in  the  determination  of  the  failure  rate 
estimates used in the warranty obligation recorded.

Developing  independent  estimates  of  the  future  failure  and  return  rates  or  product  families  by 
utilizing data analytics and compared them to management assumptions

/s/ DELOITTE & TOUCHE LLP

San Francisco, California

February 10, 2023 

We have served as the Company’s auditor since 2010.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the stockholders and the Board of Directors of Enphase Energy, Inc.

Opinion on Internal Control over Financial Reporting

We  have  audited  the  internal  control  over  financial  reporting  of  Enphase  Energy,  Inc.  and  subsidiaries  (the 
“Company”)  as  of  December  31,  2022,  based  on  criteria  established  in  Internal  Control  —  Integrated  Framework 
(2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, 
the  Company  maintained,  in  all  material  respects,  effective  internal  control  over  financial  reporting  as  of 
December  31,  2022,  based  on  criteria  established  in  Internal  Control  —  Integrated  Framework  (2013)  issued  by 
COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board 
(United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2022, of 
the  Company  and  our  report  dated  February  10,  2023,  expressed  as  an  unqualified  opinion  on  those  financial 
statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting 
and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying 
Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on 
the  Company’s  internal  control  over  financial  reporting  based  on  our  audit.  We  are  a  public  accounting  firm 
registered with the PCAOB and are required to be independent with respect to the Company in accordance with the 
U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission 
and the PCAOB.

We  conducted  our  audit  in  accordance  with  the  standards  of  the  PCAOB. Those  standards  require  that  we 
plan  and  perform  the  audit  to  obtain  reasonable  assurance  about  whether  effective  internal  control  over  financial 
reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control 
over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and 
operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we 
considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance 
regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in 
accordance  with  generally  accepted  accounting  principles.  A  company’s  internal  control  over  financial  reporting 
includes  those  policies  and  procedures  that  (1)  pertain  to  the  maintenance  of  records  that,  in  reasonable  detail, 
accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable 
assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance 
with generally accepted accounting principles, and that receipts and expenditures of the company are being made 
only in accordance  with authorizations of management  and directors of the company; and (3) provide reasonable 
assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s 
assets that could have a material effect on the financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect 
misstatements.  Also,  projections  of  any  evaluation  of  effectiveness  to  future  periods  are  subject  to  the  risk  that 
controls  may  become  inadequate  because  of  changes  in  conditions,  or  that  the  degree  of  compliance  with  the 
policies or procedures may deteriorate.

/s/ DELOITTE & TOUCHE LLP

San Francisco, California
February 10, 2023

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ENPHASE ENERGY, INC.

CONSOLIDATED BALANCE SHEETS
(In thousands, except par value)

Current assets:

Cash and cash equivalents

Marketable securities

ASSETS

Accounts receivable, net of allowances of $979 and $1,590 at December 31, 2022 and 
December 31, 2021, respectively

Inventory

Prepaid expenses and other assets

Total current assets

Property and equipment, net

Operating lease, right of use asset, net

Intangible assets, net

Goodwill

Other assets

Deferred tax assets, net

Total assets

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Accounts payable

Accrued liabilities

Deferred revenues, current

Warranty obligations, current (includes $30,740 and $14,612 measured at fair value at 
December 31, 2022 and December 31, 2021, respectively)

Debt, current

Total current liabilities

Long-term liabilities:

Deferred revenues, non-current

Warranty obligations, non-current (includes $75,749 and $36,395 measured at fair value 
at December 31, 2022 and December 31, 2021, respectively)

Other liabilities

Debt, non-current

Total liabilities

Commitments and contingencies (Note 13)

Stockholders’ equity:

Common stock, $0.00001 par value, 300,000 shares authorized; and 136,441 shares and 
133,894 shares issued and outstanding at December 31, 2022 and December 31, 2021, 
respectively

Additional paid-in capital

Accumulated equity (deficit)

Accumulated other comprehensive loss

Total stockholders’ equity

Total liabilities and stockholders’ equity

See Notes to Consolidated Financial Statements.

As of

December 31,
2022

December 31,
2021

$ 

473,244  $ 

119,316 

1,139,599 

897,335 

440,896 

149,708 

60,824 

333,626 

74,400 

37,784 

2,264,271 

1,462,461 

111,367 

21,379 

99,541 

213,559 

169,291 

204,872 

82,167 

14,420 

97,758 

181,254 

118,726 

122,470 

$ 

3,084,280  $ 

2,079,256 

$ 

125,085  $ 

113,767 

295,939 

90,747 

35,556 

90,892 

638,219 

157,912 

62,670 

19,395 

86,052 

439,796 

281,613 

187,186 

95,890 

43,520 

1,199,465 

2,258,707 

53,982 

16,530 

951,594 

1,649,088 

1 

819,119 

17,335 

1 

837,924 

(405,737) 

(10,882)   

(2,020) 

825,573 

430,168 

$ 

3,084,280  $ 

2,079,256 

Enphase Energy, Inc. | 2022 Form 10-K | 69

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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ENPHASE ENERGY, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share data)

Net revenues
Cost of revenues
Gross profit
Operating expenses:

Research and development
Sales and marketing
General and administrative
Restructuring charges

Total operating expenses

Income from operations
Other income (expense), net

Interest income
Interest expense
Other (expense) income, net

Loss on partial settlement of convertible notes
Change in fair value of derivatives

Total other income (expense), net

Income before income taxes
Income tax benefit (provision)
Net income
Net income per share:

Basic
Diluted

Shares used in per share calculation:

Basic
Diluted

Years Ended December 31,

$ 

2022
2,330,853  $ 
1,356,258 
974,595 

2021
1,382,049  $ 
827,627 
554,422 

2020

774,425 
428,444 
345,981 

168,846 
215,102 
140,002 
2,384 
526,334 
448,261 

13,656 
(9,438)   
(431)   

— 
— 
3,787 
452,048 
(54,686)   
397,362  $ 

105,526 
128,974 
104,090 
— 
338,590 
215,832 

695 
(45,152)   
6,050 

(56,497)   

— 

(94,904)   
120,928 
24,521 

145,449  $ 

55,921 
52,927 
50,694 
— 
159,542 
186,439 

2,156 
(21,001) 
(799) 

(3,037) 
(44,348) 
(67,029) 
119,410 
14,585 
133,995 

2.94  $ 
2.77  $ 

1.09  $ 
1.02  $ 

1.07 
0.95 

135,349 
144,390 

134,025 
142,878 

125,561 
141,918 

$ 

$ 
$ 

See Notes to Consolidated Financial Statements.

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ENPHASE ENERGY, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In thousands)

Net income

Other comprehensive income (loss):

Foreign currency translation adjustments

Marketable securities

Years Ended December 31,

2022

2021

2020

$ 

397,362  $ 

145,449  $ 

133,995 

(3,185)   

(334)   

1,357 

Change in net unrealized loss, net of income tax benefit of $1,993 and 
$745 for the year ended December 31, 2022 and 2021, respectively.

Comprehensive income

(5,677)   

(2,120)   

— 

$ 

388,500  $ 

142,995  $ 

135,352 

See Notes to Consolidated Financial Statements.

Enphase Energy, Inc. | 2022 Form 10-K | 71

 
 
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ENPHASE ENERGY, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands)

Common Stock

Shares

Amount

Additional
Paid-In 
Capital

Accumulated
Income 
(Deficit)

Accumulated
Other
Comprehensi
ve
Income (Loss)

Total
Stockholders’
Equity

Balance at December 31, 2019

  123,109  $ 

1  $ 

458,315  $ 

(185,181)  $ 

(923)  $ 

272,212 

Issuance of common stock from 
exercise of equity awards and 
employee stock purchase plan

Payment of withholding taxes related 
to net share settlement of equity 
awards
Equity component of convertible 
senior notes, net
Cost of convertible notes hedge 
related to the convertible senior 
notes, net
Sale of warrants related to the 
convertible senior notes

Equity component of settlement of 
convertible senior notes, net
Settlement of convertible senior notes  
Exercise of convertible notes hedge 
related to the convertible senior notes  
Exercise of warrants related to the 
convertible senior notes
Change in fair value of common stock 
related to acquisition

Stock-based compensation

Net income

Foreign currency translation 
adjustments

4,002 

— 

— 

— 

— 

— 
1,851 

(1,851)   

1,851 

— 

— 

— 

— 

— 

— 

— 

— 

— 

— 
— 

— 

— 

— 

— 

— 

— 

8,395 

(68,330)   

116,502 

(117,108)   

96,351 

(306,220)   
301,015 

— 

— 

3,321 

42,503 

— 

— 

— 

— 

— 

— 

— 

— 
— 

— 

— 

— 

— 

133,995 

— 

— 

— 

— 

— 

— 
— 

— 

— 

— 

— 

— 

8,395 

(68,330) 

116,502 

(117,108) 

96,351 

(306,220) 
301,015 

— 

— 

3,321 

42,503 

133,995 

— 

1,357 

1,357 

Balance at December 31, 2020

  128,962  $ 

1  $ 

534,744  $ 

(51,186)  $ 

434  $ 

483,993 

Issuance of common stock from 
exercise of equity awards and 
employee stock purchase plan
Payment of withholding taxes related 
to net share settlement of equity 
awards
Equity component of convertible senior 
notes, net
Cost of convertible notes hedge 
related to the convertible senior 
notes, net
Sale of warrants related to the 
convertible senior notes
Equity component of settlement of 
convertible senior notes, net
Settlement of convertible senior notes
Exercise of convertible notes hedge 
related to the convertible senior notes  
Exercise of warrants related to the 
convertible senior notes
Stock-based compensation
Net income
Repurchase of common stock
Foreign currency translation 
adjustment

2,808 

—  $ 

7,484  $ 

—  $ 

—  $ 

7,484 

— 

— 

— 

— 

— 
5,489 

(5,721)   

5,582 
— 
— 
(3,226)   

— 

— 

— 

— 

— 

— 
— 

— 

— 
— 
— 
— 

— 

(29,136)   

207,970 

(213,322)   

220,800 

(976,714)   
972,273 

— 

— 
113,825 
— 
— 

— 

— 

— 

— 

— 
— 

— 

— 
— 
145,449 
(500,000)   

— 

— 

— 

— 

— 
— 

— 

— 
— 
— 
— 

(29,136) 

207,970 

(213,322) 

220,800 

(976,714) 
972,273 

— 

— 
113,825 
145,449 
(500,000) 

— 

— 

(334)   

(334) 

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Common Stock

Shares

Amount

Additional
Paid-In 
Capital

Accumulated
Income 
(Deficit)

Accumulated
Other
Comprehensi
ve
Income (Loss)

Total
Stockholders’
Equity

Change in net unrealized loss on 
marketable securities net of tax

— 

Balance at December 31, 2021

  133,894  $ 

— 
1  $ 

— 
837,924  $ 

— 

(405,737)  $ 

(2,120)   
(2,020)  $ 

(2,120) 
430,168 

Cumulative-effect adjustment to 
additional paid-in capital and 
accumulated equity related to the 
adoption of ASU 2020-06

Issuance of common stock from 
exercise of equity awards and 
employee stock purchase plan

Payment of withholding taxes related 
to net share settlement of equity 
awards

Deferred tax impact on equity 

component of partial settlement of 
convertible notes

Stock-based compensation
Net income
Foreign currency translation 

adjustment

Change in net unrealized loss on 
marketable securities, net of tax

—  $  —  $ 

(207,967)  $ 

25,710  $ 

—  $ 

(182,257) 

2,547 

— 

10,370 

— 

— 

(27,496)   

— 

— 

— 

10,370 

— 

(27,496) 

— 
— 
— 

— 

— 

— 
— 
— 

— 

— 

(1,837)   

208,125 
— 

— 
— 
397,362 

— 
— 
— 

(1,837) 
208,125 
397,362 

— 

— 

— 

— 

(3,185)   

(3,185) 

(5,677)   

(5,677) 

Balance at December 31, 2022

  136,441  $ 

1  $ 

819,119  $ 

17,335  $ 

(10,882)  $ 

825,573 

See Notes to Consolidated Financial Statements.

Enphase Energy, Inc. | 2022 Form 10-K | 73

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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ENPHASE ENERGY, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

Cash flows from operating activities:

Net income
Adjustments to reconcile net income to net cash provided by operating 
activities:
Depreciation and amortization
Amortization of marketable securities premiums, net of accretion of 
purchase discounts
Provision for doubtful accounts
Asset impairment
Non-cash interest expense
Loss on partial settlement of convertibles notes
Deemed repayment of convertible notes attributable to accreted debt 
discount
Gain on settlement of debt securities
Change in fair value of debt securities
Stock-based compensation
Change in fair value of derivatives
Deferred income taxes
Changes in operating assets and liabilities:

Accounts receivable
Inventory
Prepaid expenses and other assets
Accounts payable, accrued and other liabilities
Warranty obligations
Deferred revenues

Net cash provided by operating activities

Cash flows from investing activities:
Purchases of property and equipment
Purchase of intangible asset
Investments in private companies
Redemption of investment in private companies
Business acquisitions, net of cash acquired
Purchases of marketable securities
Maturities of marketable securities

Net cash used in investing activities

Cash flows from financing activities:

Issuance of convertible notes, net of issuance costs
Purchase of convertible note hedges
Sale of warrants
Principal payments and financing fees on debt
Partial repurchase of convertible notes
Proceeds from exercise of equity awards and employee stock purchase 
plan
Repurchase of common stock
Payment of withholding taxes related to net share settlement of equity 
awards

Net cash provided by (used in) financing activities
Effect of exchange rate changes on cash and cash equivalents

Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents—Beginning of period
Cash and cash equivalents—End of period

Years Ended December 31,
2021

2020

2022

$ 

397,362  $ 

145,449  $ 

133,995 

58,775 

30,846 

18,103 

(2,632)   
119 
1,200 
8,167 
— 

— 
— 
(735)   

216,802 
— 
3,633 

(107,556)   
(75,273)   
(68,423)   
133,416 
57,773 
122,189 
744,817 

(46,443)   

— 

(16,000)   

— 

(62,162)   
(907,430)   
660,129 
(371,906)   

— 
— 
— 
— 
— 

1,593 
477 
— 
44,387 
56,497 

(15,718)   
(6,569)   
(3,042)   

114,286 
— 

(31,241)   

(151,160)   
(29,258)   
(26,885)   
117,183 
27,016 
78,167 
352,028 

(52,258)   
(250)   
(58,000)   
26,569 
(235,652)   
(934,956)   
35,000 
(1,219,547)   

1,188,439 

(286,235)   
220,800 

(1,694)   
(290,247)   

— 
425 
— 
18,825 
3,037 

(3,132) 
— 
— 
42,503 
44,348 
(17,117) 

(34,321) 
(9,708) 
(14,636) 
35,695 
8,815 
(10,498) 
216,334 

(20,558) 
— 
(5,010) 
— 
— 
— 
— 
(25,568) 

312,420 
(89,056) 
71,552 
(2,575) 
(40,728) 

10,370 
— 

7,484 
(500,000)   

8,395 
— 

(27,496)   
(17,126)   
(1,857)   

353,928 
119,316 
473,244  $ 

(29,136)   
309,411 

(1,955)   
(560,063)   
679,379 
119,316  $ 

(68,330) 
191,678 
826 
383,270 
296,109 
679,379 

$ 

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Supplemental cash flow disclosure:

Cash paid for interest
Cash paid for income taxes

Supplemental disclosures of non-cash investing and financing activities:
Purchases of property and equipment included in accounts payable
Purchases of property and equipment through tenant improvement 
allowance
Contingent consideration in connection with the acquisition

Years Ended December 31,
2021

2020

2022

455  $ 
33,168  $ 

733  $ 
4,823  $ 

1,875 
3,452 

17,396  $ 

7,498  $ 

3,630 

748  $ 
—  $ 

—  $ 
3,500  $ 

— 
— 

$ 
$ 

$ 

$ 
$ 

See Notes to Consolidated Financial Statements.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. 

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION 

Description of Business

Enphase Energy, Inc. (the “Company”) is a global energy technology company. The Company delivers smart, 
easy-to-use  solutions  that  manage  solar  generation,  storage  and  communication  on  one  platform.  The  Company 
revolutionized the solar industry with its microinverter technology and produces a fully integrated solar-plus-storage 
solution.

Basis of Presentation and Consolidation

The accompanying consolidated financial statements are presented in accordance with accounting principles 
generally accepted in the United States (“GAAP”). The consolidated financial statements include the accounts of the 
Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in 
consolidation.

Use of Estimates

The  preparation  of  financial  statements  in  conformity  with  GAAP  requires  management  to  make  estimates 
and  assumptions  that  affect  the  reported  amounts  of  assets  and  liabilities,  disclosure  of  contingent  assets  and 
liabilities  at  the  date  of  the  financial  statements  and  the  reported  amounts  of  income  and  expenses  during  the 
reporting  period.  Significant  estimates  and  assumptions  reflected  in  the  financial  statements  include  revenue 
recognition,  allowance  for  doubtful  accounts,  stock-based  compensation,  deferred  compensation  arrangements, 
inventory valuation, accrued warranty obligations, fair value of investments, debt derivatives, convertible notes and 
contingent  consideration,  fair  value  of  acquired  intangible  assets  and  goodwill,  useful  lives  of  acquired  intangible 
assets  and  property  and  equipment,  incremental  borrowing  rate  for  right-of-use  assets  and  lease  liability.  These 
estimates  are  based  on  information  available  as  of  the  date  of  the  financial  statements;  therefore,  actual  results 
could  differ  materially  from  those  estimates  due  to  risks  and  uncertainties,  including  uncertainty  in  the  ongoing 
semiconductor supply and logistics constraints.

2. 

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Revenue Recognition

The  Company  generates  revenue  from  sales  of  its  solutions,  which  include  microinverter  units  and  related 
accessories,  an  IQ  Gateway,  the  cloud-based  Enlighten  monitoring  service,  storage  solutions,  Electric  Vehicle 
(“EV”) charging solutions, design, proposal, permitting and lead generation services, as well as a platform matching 
cleantech  asset  owners  to  a  local  and  on-demand  workforce  of  service  providers,  to  distributors,  large  installers, 
original equipment manufacturers (“OEMs”) and strategic partners.

Revenues are recognized when control of the promised goods or services are transferred to the Company’s 
customers in an amount that reflects the consideration that is expected to be received in exchange for those goods 
or services. The Company generates all of its revenues from contracts with its customers. A description of principal 
activities from which the Company generates revenues follows. 

•

Products  Delivered  at  a  Point  in  Time.  The  Company  sells  its  products  and  professional  services  to 
customers  in  accordance  with  the  terms  of  the  related  customer  contracts.  The  Company  generates 
revenues  from  sales  of  its  solutions,  which  include  microinverter  units  and  related  accessories,  storage 
solutions, EV charging solutions, design, proposal, permitting and lead generation services, as well as a 
platform  matching  cleantech  asset  owners  to  a  local  and  on-demand  workforce  of  service  providers  to 
distributors, large installers, OEMs and strategic partners. Microinverter units, microinverter accessories, 
storage  and  EV  solutions,  design,  proposal,  permitting  and  lead  generation  services,  as  well  as 
completed  work  orders  on  its  platform  matching  cleantech  asset  owners  to  a  local  and  on-demand 
workforce of service providers, are delivered to customers at a point in time, and the Company recognizes 
revenue for these products or professional services when the Company transfers control of the product or 
professional  services  to  the  customer,  which  is  generally  upon  product  shipment  or  service  delivery, 
respectively.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

•

Products  Delivered  Over  Time.  The  sale  of  an  IQ  Gateway  includes  the  Company’s  Enlighten  cloud-
based  monitoring  service.  The  full  consideration  for  these  products  represents  a  single  performance 
obligation and is deferred at the sale date and recognized over the estimated service period of 6.5 years. 
The Company also sells certain communication accessories that contain a service performance obligation 
to be delivered over time. The revenue from these products is recognized over the related service period, 
which  is  typically  5  or  12  years.  The  subscription  services  revenue  generated  from  each  customer’s 
subscription  to  the  Company’s  design  and  proposal  software  is  recognized  on  a  ratable  basis  over  the 
contract term beginning on the date that the Company’s service is made available to the customer. The 
subscription contracts are generally 3 months to 12 months in length and billed in advance.

When  the  Company  sells  a  product  with  more  than  one  performance  obligation,  such  as  the  IQ  Combiner, 
which includes both hardware and IQ Gateway, the total consideration is allocated to these performance obligations 
based on their relative standalone selling prices.

The  Company  records  certain  contra  revenue  promotions  as  variable  consideration  and  recognizes  these 

promotions at the time the related revenue is recorded.

The  Company  records  upfront  contract  acquisition  costs,  such  as  sales  commissions,  to  be  capitalized  and 
amortized  over  the  estimated  life  of  the  asset.  For  contracts  that  have  a  duration  of  less  than  one  year,  the 
Company follows the Topic 606 practical expedient and expenses these costs when incurred. Commissions related 
to  the  Company’s  sale  of  monitoring  hardware  and  service  are  capitalized  and  amortized  over  the  period  of  the 
associated revenue, which is 6.5 years. 

Refer to Note 3. “Revenue Recognition,” for additional information related to revenue recognition.

Cost of Revenues

The  Company  includes  the  following  in  cost  of  revenues:  product  costs,  warranty,  manufacturing  personnel 
and logistics costs, freight costs, inventory write-downs, hosting services costs related to the Company’s Enlighten 
service offering and design and proposal services, depreciation and amortization of manufacturing test equipment 
and  amortization  of  capitalized  software  development  costs  related  to  the  Company’s  Enlighten  service  offering, 
lead acquisition costs, design and proposal services, and employee-related expenses associated with proposal and 
permitting  services  and  design  and  proposal  service  customer  support.  A  description  of  principal  activities  from 
which the Company recognizes cost of revenue is as follows. 

•

•

Products  Delivered  at  a  Point  in  Time.  Cost  of  revenue  from  these  products  is  recognized  when  the 
Company transfers control of the product to the customer, which is generally upon shipment.

Products  Delivered  Over  Time.  Cost  of  revenue  from  these  products  is  recognized  over  the  related 
service period.

Cash, Cash Equivalents and Marketable Securities

The  Company  classifies  investments  in  marketable  securities  as  available-for-sale  investments  and  records 
these  marketable  securities  at  fair  value.  The  Company  determines  the  appropriate  classification  of  marketable 
securities  at  the  time  of  purchase  and  reevaluates  such  designation  at  each  balance  sheet  date. All  highly  liquid 
investments with original maturities of 90 days or less from the date of purchase are classified as cash equivalents, 
while  all  others  are  presented  within  current  assets  since  these  investments  represent  funds  available  for  current 
operations and the Company has the ability and intent, if necessary, to liquidate any of these investments within one 
year in order to meet liquidity needs or to grow the business, including for potential business acquisitions or other 
strategic transactions.

Marketable securities are recorded at fair value, with the unrealized gains or losses unrelated to credit loss 
factors  included  in  accumulated  other  comprehensive  income  (loss),  net  of  tax.  Realized  gains  and  losses  and 
declines in value determined to be other than temporary based on the specific identification method are reported in 
other income (expense), net in the consolidated statements of operations.

The Company periodically reviews whether the securities may be other-than-temporarily impaired, including 
whether or not (i) the Company has the intent to sell the security or (ii) it is more likely than not that the Company 
will  be  required  to  sell  the  security  before  its  anticipated  recovery.  If  one  of  these  factors  is  met,  the  Company 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

records  an  impairment  loss  associated  with  the  impaired  investment.  The  impairment  loss  will  be  recorded  as  a 
write-down  of  investments  in  the  consolidated  balance  sheets  and  a  realized  loss  within  other  income  (expense), 
net  in  the  consolidated  statements  of  operations.  There  were  no  credit-related  impairments  recognized  on  the 
Company’s investments in marketable securities during the periods presented.

For purposes of identifying and measuring impairment, the policy election was made to exclude the applicable 
accrued interest from both the fair value and amortized cost basis. Applicable accrued interest of $2.2 million and 
$2.1 million, net of the allowance for credit losses, if any, is recorded in prepaid expenses and other current assets 
on the consolidated balance sheets as of December 31, 2022 and 2021, respectively.

Fair Value of Financial Instruments 

The fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a 
liability in an orderly transaction between market participants at the measurement date. The carrying amounts of the 
Company’s cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate 
fair value because of the short maturity of those instruments. Equity investments with readily determinable fair value 
are carried at fair value based on quoted market prices or estimated based on market conditions and risks existing 
at each balance sheet date. Equity investments without readily determinable fair value are measured at cost, less 
impairment,  and  are  adjusted  for  observable  price  changes  in  orderly  transactions  for  an  identical  or  similar 
investment of the same issuer.

Convertible Note Derivatives

In March 2020, the Company issued $320.0 million aggregate principal amount of its 0.25% convertible senior 
notes  due  2025  (the  “Notes  due  2025”).  Concurrently  with  the  issuance  of  the  Notes  due  2025,  the  Company 
entered into privately-negotiated convertible note hedge and warrant transactions which in combination are intended 
to reduce the potential dilution from the conversion of the Notes due 2025. The Company could not elect to issue 
the  shares  of  common  stock  upon  settlement  of  the  Notes  due  2025  or  convertible  note  hedge  or  warrant 
transactions due to insufficient authorized share capital. As a result, the embedded conversion option and warrants 
were accounted for as derivative liabilities and convertible notes hedge as a derivative asset and a gain (or loss) 
was reported in other expense, net in the consolidated statement of operations to the extent the valuation changed 
from  the  date  of  issuance  of  the  Notes  due  2025.  On  May  20,  2020,  at  the  Company’s  annual  meeting  of 
stockholders, the stockholders approved an amendment to its certificate of incorporation to increase the number of 
authorized shares of the Company’s common stock. As a result, the Company is now able to settle the Notes due 
2025, convertible notes hedge and warrants through payment or delivery, as the case may be, of cash, shares of its 
common stock or a combination thereof, at the Company’s election. Accordingly, on May 20, 2020, the embedded 
derivative  liability,  convertible  notes  hedge  and  warrants  liability  were  remeasured  at  fair  value  and  were  then 
reclassified to additional paid-in-capital in the consolidated balance sheet in the second quarter of 2020 and are no 
longer remeasured as long as they continue to meet the conditions for equity classification. As of both December 
31,  2022  and  2021,  the  Company  does  not  have  any  convertible  note  derivatives.  Refer  to  Note  12.  “Debt,”  for 
additional information related to these transactions.

Accounts Receivables and Contract Assets

The  Company  receives  payments  from  customers  based  upon  contractual  billing  schedules.  Accounts 
receivable  are  recorded  when  the  right  to  consideration  becomes  unconditional.  Contract  assets  include  deferred 
product  costs  and  commissions  associated  with  the  deferred  revenue  and  will  be  amortized  along  with  the 
associated revenue.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Allowance for Doubtful Accounts

The Company maintains allowances for doubtful accounts for uncollectible accounts receivable. Management 
estimates anticipated credit losses from doubtful accounts based on days past due, customer specific experience, 
collection history, the financial health of customers including from the impacts of the COVID-19 pandemic, among 
other factors. Accounts receivable are recorded net of allowance for doubtful accounts. The following table sets forth 
activities in the allowance for doubtful accounts for the periods indicated.

Balance, at beginning of year

Net charges to expense or revenue
Write-offs, net of recoveries

Balance, at end of year

Inventory

December 31,

2022

2021

2020

$ 

$ 

(In thousands)

1,590  $ 
(119)   
(492)   
979  $ 

462  $ 

1,140 

(12)   
1,590  $ 

564 
425 
(527) 
462 

Inventory  is  valued  at  the  lower  of  cost  or  market.  Market  is  current  replacement  cost  (by  purchase  or  by 
reproduction,  dependent  on  the  type  of  inventory).  In  cases  where  market  exceeds  net  realizable  value 
(i.e., estimated selling price less reasonably predictable costs of completion and disposal), inventories are stated at 
net realizable value. Market is not considered to be less than net realizable value reduced by an allowance for an 
approximately  normal  profit  margin.  The  Company  determines  cost  on  a  first-in  first-out  basis.  Management 
assesses the valuation on a quarterly basis and writes down the value for any excess and obsolete inventory based 
upon  expected  demand,  anticipated  sales  price,  effect  of  new  product  introductions,  product  obsolescence, 
customer  concentrations,  product  merchantability  and  other  factors.  Inventory  write-downs  are  equal  to  the 
difference between the cost of inventories and market.

Long-Lived Assets

Property  and  equipment  are  stated  at  cost  less  accumulated  depreciation.  Cost  includes  amounts  paid  to 
acquire  or  construct  the  asset  as  well  as  any  expenditure  that  substantially  adds  to  the  value  of  or  significantly 
extends the useful life of an existing asset. Repair and maintenance costs are expensed as incurred. Depreciation 
and amortization are computed using the straight-line method over the estimated useful lives of the assets, which 
range from 3 to 10 years. Leasehold improvements are amortized over the shorter of the lease term or expected 
useful life of the improvements.

Internal-use software, whether purchased or developed, is capitalized at cost and amortized on a straight-line 
basis over its estimated useful life. Costs associated with internally developed software are expensed until the point 
at  which  the  project  has  reached  the  development  stage.  Subsequent  additions,  modifications  or  upgrades  to 
internal-use  software  are  capitalized  only  to  the  extent  that  they  provide  additional  functionality.  Software 
maintenance and training costs are expensed in the period in which they are incurred. The capitalization of internal-
use software requires judgment in determining when a project has reached the development stage and the period 
over which the Company expects to benefit from the use of that software. Capitalized costs are recorded as part of 
property  and  equipment  in  the  consolidated  balance  sheets.  Capitalized  internal-use  software  is  amortized  on  a 
straight-line basis over its estimated useful life, which is generally three years, and is recorded as cost of revenue in 
the consolidated statements of operations.

The  Company  capitalizes  implementation  costs  related  to  cloud  computing  (i.e.  hosting)  arrangements  that 
are  accounted  for  as  a  service  contract  that  meets  the  accounting  requirement  for  capitalization  as  such 
implementation costs were incurred to develop or utilize internal-use software hosted by a third-party vendor. The 
capitalized implementation costs are recorded as part of “Other assets” on the consolidated balance sheets and is 
amortized over the length of the service contract.

Property  and  equipment,  including  internal-use  software,  and  capitalized  implementation  costs  related  to 
cloud computing arrangements, are reviewed for impairment whenever events or changes in circumstances indicate 
that the carrying amount of an asset group may not be recoverable. An impairment loss would be recognized when 
the  carrying  amount  of  an  asset  group  exceeds  the  estimated  undiscounted  future  cash  flows  expected  to  result 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

from the use of the asset group and its eventual disposition. The amount of the impairment loss to be recorded is 
calculated by the excess of the asset group’s carrying value over its fair value. Fair value is generally determined 
using a discounted cash flow analysis. The Company recorded asset impairment charges of $1.2 million in the year 
ended December 31, 2022 associated with an operating lease, right of use asset, compared to zero for the years 
ended  December  31,  2021  and  2020.  There  were  no  events  or  changes  in  circumstances  that  may  indicate  the 
carrying amount of remaining assets is not recoverable.

Business Combinations

Assets acquired and liabilities assumed as part of a business acquisition are generally recorded at their fair 
value at the date of acquisition. The excess of purchase price over the fair value of assets acquired and liabilities 
assumed is recorded as goodwill. Determining fair value of identifiable assets, particularly intangibles, and liabilities 
acquired also requires the Company to make estimates, which are based on all available information and in some 
cases  assumptions  with  respect  to  the  timing  and  amount  of  future  revenues  and  expenses  associated  with  an 
asset. Accounting  for  business  acquisitions  requires  the  Company  to  make  judgments  as  to  whether  a  purchase 
transaction  is  a  multiple  element  contract,  meaning  that  it  includes  other  transaction  components.  This  judgment 
and determination affect the amount of consideration paid that is allocable to assets and liabilities acquired in the 
business  purchase  transaction.  Additional  information  existing  as  of  the  acquisition  date  but  unknown  to  the 
Company may become known during the remainder of the measurement period, not to exceed 12 months from the 
acquisition date, which may result in changes to the amounts and allocations recorded.

Goodwill

Goodwill results from the purchase consideration paid in excess of the fair value of the net assets recorded in 
connection  with  business  acquisitions.  Goodwill  is  not  amortized  but  is  assessed  for  potential  impairment  at  least 
annually during the fourth quarter of each fiscal year or between annual tests if an event occurs or circumstances 
change  that  would  indicate  the  carrying  amount  may  be  impaired.  Goodwill  is  tested  at  the  reporting  unit  level, 
which  the  Company  has  determined  to  be  the  same  as  the  entity  as  a  whole  (entity  level).  The  Company  first 
performs qualitative assessment to determine whether it is more likely than not that the fair value of our reporting 
unit is less than its carrying value. If, after assessing the qualitative factors, the Company determines that it is more 
likely than not that the fair value of its reporting unit is less than its carrying value, an impairment analysis will be 
performed.

Qualitative  factors  include  industry  and  market  consideration,  overall  financial  performance,  share  price 
trends  and  market  capitalization  and  Company-specific  events.  The  Company  determined,  after  performing  a 
qualitative review of its reporting unit, that it is more likely than not that the fair value of its reporting unit exceeds its 
carrying value. Accordingly, there was no indication of impairment in the years ended December 31, 2022, 2021 and 
2020 and no quantitative goodwill impairment test was performed.

Intangible Assets

Intangible assets include patents and other purchased intangible assets. Intangible assets with finite lives are 
amortized on a straight-line basis, with estimated useful lives ranging from 5 to 9 years. Indefinite-lived intangible 
assets  are  tested  for  impairment  annually  and  are  also  tested  for  impairment  between  annual  tests  if  an  event 
occurs  or  circumstances  change  that  would  indicate  that  the  carrying  amount  may  be  impaired.  Intangible  assets 
with finite lives are tested for impairment whenever events or circumstances indicate that the carrying amount of an 
asset group may not be recoverable. An impairment loss is recognized when the carrying amount of an asset group 
exceeds the estimated undiscounted cash flows used in determining the fair value of the asset group. The amount 
of the impairment loss to be recorded is calculated by the excess of the asset group’s carrying value over its fair 
value.  Fair  value  is  generally  determined  using  a  discounted  cash  flow  analysis.  There  was  no  impairment  of 
intangible assets in any of the years presented.

Contract Liabilities

Contract liabilities are recorded as deferred revenue on the accompanying consolidated balance sheets and 
include  payments  received  in  advance  of  performance  obligations  under  the  contract  and  are  realized  when  the 
associated revenue is recognized under the contract.

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Warranty Obligations

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The  Company’s  warranty  accrual  provides  for  the  replacement  of  microinverter  units,  IQ  Battery  and  IQ 
Gateway that fail during the product’s warranty term. The warranty term related to microinverter units is typically 15 
years for first and second generation microinverters and up to 25 years for subsequent generation microinverters. 
The warranty term for IQ Battery and IQ Gateway is 10 years and 5 years, respectively. On a quarterly basis, the 
Company  employs  a  consistent,  systematic  and  rational  methodology  to  assess  the  adequacy  of  its  warranty 
liability.  This  assessment  includes  updating  all  key  estimates  and  assumptions  for  each  generation  of  product, 
based on historical results, trends and the most current data available as of the filing date. The key estimates and 
assumptions  used  in  the  warranty  liability  are  thoroughly  reviewed  by  management  on  a  quarterly  basis. The  key 
estimates used by the Company to estimate its warranty liability are: (1) the number of units expected to fail and be 
returned  for  replacement  over  time  (i.e.,  return  rate);  and  (2)  the  per  unit  cost  of  replacement  units,  including 
outbound  shipping  and  limited  labor  costs,  expected  to  be  incurred  to  replace  failed  units  over  time 
(i.e., replacement cost).

Estimated Return Rates — The Company’s Quality and Reliability department has primary responsibility to 
determine  the  estimated  return  rates  for  each  generation  of  product.  To  establish  initial  return  rate  estimates  for 
each  generation  of  product,  the  Company’s  quality  engineers  use  a  combination  of  industry  standard  Mean Time 
Between Failure estimates for individual components contained in its product, third-party data collected on similar 
equipment deployed in outdoor environments similar to those in which the Company’s products are installed, and 
rigorous  long  term  reliability  and  accelerated  life  cycle  testing  which  simulates  the  service  life  of  the  product  in  a 
short period of time. As units are deployed into operating environments, the Company continues to monitor product 
performance through its Enlighten monitoring platform. It typically takes three to nine months between the date of 
sale and date of end-user installation. Consequently, the Company’s ability to monitor actual failures of units sold 
similarly lags by three to nine months. When a product fails and is returned, the Company performs diagnostic root 
cause  failure  analysis  to  understand  and  isolate  the  underlying  mechanism(s)  causing  the  failure.  The  Company 
then  uses  the  results  of  this  analysis  (combined  with  the  actual,  cumulative  performance  data  collected  on  those 
units  prior  to  failure  through  Enlighten)  to  draw  conclusions  with  respect  to  how  or  if  the  identified  failure 
mechanism(s) will impact the remaining units deployed in the installed base.

As the vast majority of the Company’s microinverters have been sold to end users for residential applications, 
the  Company  believes  that  warranty  return  rates  will  be  affected  by  changes  over  time  in  residential  home 
ownership  because  the  Company  expects  that  subsequent  homeowners  are  less  likely  to  file  returns  than  the 
homeowners who originally purchase the microinverters.

Estimated  Replacement  Costs  —  Three  factors  are  considered  in  the  Company’s  analysis  of  estimated 
replacement  cost:  (1)  the  estimated  cost  of  replacement  products;  (2)  the  estimated  cost  to  ship  replacement 
products  to  end  users;  and  (3)  the  estimated  labor  reimbursement  expected  to  be  paid  to  third-party  installers 
performing replacement services for the end user. Because the Company’s warranty provides for the replacement of 
defective microinverters or other products over long periods of time (between 5 years to 25 years, depending on the 
product  and  the  generation  of  that  product  purchased),  the  estimated  per  unit  cost  of  current  and  future  product 
generations is considered in the estimated replacement cost. Estimated costs to ship replacement units are based 
on observable, market-based shipping costs paid by the Company to third-party freight carriers. The Company has 
a separate program that allows third-party installers to claim fixed-dollar reimbursements for labor costs they incur 
to  replace  failed  products  for  a  limited  time  from  the  date  of  original  installation.  Included  in  the  Company’s 
estimated  replacement  cost  is  an  analysis  of  the  number  of  fixed-dollar  labor  reimbursements  expected  to  be 
claimed by third-party installers over the limited offering period.

In addition to the key estimates noted above, the Company also compares actual warranty results to expected 
results  and  evaluates  any  significant  differences.  Management  may  make  additional  adjustments  to  the  warranty 
provision based on performance trends or other qualitative factors. If actual return rates, or replacement costs differ 
from the Company’s estimates in future periods, changes to these estimates may be required, resulting in increases 
or decreases in the Company’s warranty obligations. Such increases or decreases could be material.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Fair Value Option for Microinverters and Other Products Sold Since January 1, 2014

The Company’s warranty obligations related to products sold since January 1, 2014 provide the Company the 
right,  but  not  the  requirement,  to  assign  its  warranty  obligations  to  a  third  party.  Under  Accounting  Standards 
Codification  (“ASC”)  825,  “Financial  Instruments”  (also  referred  to  as  “fair  value  option”),  an  entity  may  choose  to 
elect the fair value option for such warranties at the time it first recognizes the eligible item. The Company made an 
irrevocable  election  to  account  for  all  eligible  warranty  obligations  associated  with  products  sold  since  January  1, 
2014  at  fair  value. This  election  was  made  to  reflect  the  underlying  economics  of  the  time  value  of  money  for  an 
obligation that will be settled over an extended period of up to 25 years.

The  Company  estimates  the  fair  value  of  warranty  obligations  by  calculating  the  warranty  obligations  in  the 
same manner as for sales prior to January 1, 2014 and applying an expected present value technique to that result. 
The  expected  present  value  technique,  an  income  approach,  converts  future  amounts  into  a  single  current 
discounted  amount.  In  addition  to  the  key  estimates  of  return  rates  and  replacement  costs,  the  Company  used 
certain  inputs  that  are  unobservable  and  significant  to  the  overall  fair  value  measurement.  Such  additional 
assumptions  included  compensation  comprised  of  a  profit  element  and  risk  premium  required  of  a  market 
participant  to  assume  the  obligation  and  a  discount  rate  based  on  the  Company’s  credit-adjusted  risk-free  rate. 
Refer to Note 11. “Fair Value Measurements,” for additional information.

Warranty obligations initially recorded at fair value at the time of sale will be subsequently re-measured to fair 
value at each reporting date. In addition, the fair value of the liability will be accreted over the corresponding term of 
the warranty of up to 25 years using the interest method.

Commitments and Contingencies

In the normal course of business, the Company is subject to loss contingencies and loss recoveries, such as 
legal proceedings and claims arising out of its business as well as tariff refunds. An accrual for a loss contingency or 
loss recovery is recognized when it is probable and the amount of loss or recovery can be reasonably estimated.

Advertising Costs 

Advertising  costs,  which  are  expensed  and  included  in  sales  and  marketing  expense  when  incurred,  were 
$3.8  million,  $16.2  million  and  $0.8  million  during  the  years  ended  December  31,  2022,  2021  and  2020, 
respectively.

Research and Development Costs 

The Company expenses research and development costs as incurred. Research and development expense 
consists primarily of expensed equipment for product development, personnel costs, including salaries, benefits and 
stock-based compensation, other professional costs and allocated facilities costs.

Stock-Based Compensation

Share-based  payments  are  required  to  be  recognized  in  the  Company’s  consolidated  statements  of 
operations  based  on  their  fair  values  and  the  estimated  number  of  shares  expected  to  vest.  The  Company 
measures stock-based compensation expense for all share-based payment awards, including stock options made to 
employees and directors, based on the estimated fair values on the date of the grant. The fair value of stock options 
granted is estimated using the Black-Scholes option valuation model. The fair value of restricted stock units (“RSU”) 
granted is determined based on the price of the Company’s common stock on the date of grant. The fair value of 
non-market-based  performance  stock  units  (“PSUs”)  granted  is  determined  based  on  the  date  of  grant  or  when 
achievement  of  performance  is  probable.  The  fair  value  of  market-based  performance  stock  units  granted  is 
determined  using  a  Monte-Carlo  model  based  on  the  date  of  grant  or  when  achievement  of  performance  is 
probable.

Stock-based  compensation  for  stock  options  and  RSUs  is  recognized  on  a  straight-line  basis  over  the 
requisite  service  period.  Stock-based  compensation  for  PSUs  without  market  conditions  is  recognized  when  the 
performance condition is probable of being achieved, and then on a graded basis over the requisite service period. 
Stock-based compensation for PSUs with market conditions is recognized on a straight-line basis over the requisite 
service period. Additionally, the Company estimates its forfeiture rate annually based on historical experience and 
revise the estimates of forfeiture in subsequent periods if actual forfeitures differ from those estimates.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Common Stock Repurchase

The  Company  accounts  for  repurchase  of  common  stock  under  ASC  505  and  charges  the  entire  cost  of 

repurchase to the accumulated equity (deficit).

Leases

The  Company  determines  if  an  arrangement  is  or  contains  a  lease  at  inception.  Operating  lease  assets 
represent  the  Company’s  right  to  use  an  underlying  asset  for  the  lease  term  and  lease  liabilities  represent  the 
Company’s obligation to make lease payments over the lease term.

Operating  lease  assets  and  liabilities  are  recognized  based  on  the  present  value  of  the  remaining  lease 
payments discounted using the Company’s incremental borrowing rate. Operating lease assets also include initial 
direct costs incurred and prepaid lease payments, minus any lease incentives. The Company’s lease terms include 
options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. 
Lease expense is recognized on a straight-line basis over the lease term.

The Company combines the lease and non-lease components in determining the operating lease assets and 

liabilities.

Foreign Currency Translation

The  Company  and  most  of  its  subsidiaries  use  their  respective  local  currency  as  their  functional  currency. 
Accordingly,  foreign  currency  assets  and  liabilities  are  translated  using  exchange  rates  in  effect  at  the  end  of  the 
period.  Aggregate  exchange  gains  and  losses  arising  from  the  translation  of  foreign  assets  and  liabilities  are 
included  in  accumulated  other  comprehensive  income  (loss)  in  stockholders'  equity.  Foreign  subsidiaries  that  use 
the U.S. dollar as their functional currency remeasure monetary assets and liabilities using exchange rates in effect 
at the end of the period. In addition, transactions that are denominated in non-functional currency are remeasured 
using exchange rates in effect at the end of the period. Exchange gains and losses arising from the remeasurement 
of  monetary  assets  and  liabilities  are  included  in  other  income  (expense),  net  in  the  consolidated  statements  of 
operations. Non-monetary assets and liabilities are carried at their historical values.

Comprehensive Income (Loss)

Comprehensive  income  (loss)  consists  of  two  components,  net  income  and  other  comprehensive  income 
(loss).  Other  comprehensive  income  (loss)  refers  to  gains  and  losses  that  are  recorded  as  an  element  of 
stockholders’ equity but are excluded from net income. The Company’s other comprehensive income (loss) consists 
of foreign currency translation adjustments and change in net unrealized gain (loss) on marketable securities, net of 
tax.

Income Taxes

The  Company  records  income  taxes  using  the  asset  and  liability  method,  which  requires  the  recognition  of 
deferred  tax  assets  and  liabilities  for  the  expected  tax  consequences  of  temporary  differences  between  the  tax 
bases of assets and liabilities for financial reporting purposes and amounts recognized for income tax purposes. In 
estimating future tax consequences, generally all expected future events other than enactments or changes in the 
tax law or rates are considered. Valuation allowances are provided when necessary to reduce deferred tax assets to 
the amount expected to be realized.

The  Company  assesses  the  realizability  of  the  deferred  tax  assets  to  determine  release  of  valuation 
allowance  as  necessary.  In  the  event  the  Company  determines  that  it  is  more  likely  than  not  that  the  Company 
would be able to realize deferred tax assets in the future in excess of its net recorded amount, an adjustment to the 
valuation allowance for the deferred tax asset would increase income in the period such determination was made. 
Likewise,  should  it  be  determined  that  additional  amounts  of  the  net  deferred  tax  asset  will  not  be  realized  in  the 
future, an adjustment to increase the deferred tax asset valuation allowance will be charged to income in the period 
such determination is made.

The  Company  operates  in  various  tax  jurisdictions  and  is  subject  to  audit  by  various  tax  authorities.  The 
Company  follows  accounting  for  uncertainty  in  income  taxes  which  requires  that  the  tax  effects  of  a  position  be 
recognized only if it is “more likely than not” to be sustained based solely on its technical merits as of the reporting 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

date. The Company considers many factors when evaluating and estimating its tax positions and tax benefits, which 
may require periodic adjustments and which may not accurately anticipate actual outcomes.

Recently Adopted Accounting Pronouncements

In  August  2020,  the  Financial  Accounting  Standards  Board  (“FASB”)  issued  Accounting  Standards  Update 
(“ASU”) 2020-06, “Debt - Debt with Conversion and Other Options (subtopic 470-20) and Derivatives and Hedging - 
Contracts  in  Entity’s  Own  Equity  (subtopic  815-40)”  (“ASU  2020-06”),  which  reduces  the  number  of  accounting 
models in subtopic ASC 470-20 that require separate accounting for embedded conversion features. As a result, a 
convertible debt instrument will be accounted for as a single liability measured at its amortized cost as long as no 
other features require bifurcation and recognition as derivatives. By removing those separation models, the effective 
interest rate of convertible debt instruments will be closer to the coupon interest rate. Further, the diluted net income 
per  share  calculation  for  convertible  instruments  will  require  the  Company  to  use  the  if-converted  method.  The 
treasury  stock  method  should  no  longer  be  used  to  calculate  diluted  net  income  per  share  for  convertible 
instruments.

The  Company  adopted  ASU  2020-06  in  the  annual  period  beginning  January  1,  2022,  on  a  modified 
retrospective basis. Upon adoption of ASU 2020-06, the Company is no longer required to bifurcate the conversion 
feature related to the issuance of $575.0 million aggregate principal amount of its 0.0% convertible senior notes due 
2028 (the “Notes due 2028”) and $632.5 million aggregate principal amount of its 0.0% convertible senior notes due 
2026 (the “Notes due 2026”) in equity. Instead, the Company combined the previously separated equity component 
with  the  liability  component,  which  together  is  now  classified  as  debt,  thereby  eliminating  the  subsequent 
amortization  of  the  debt  discount.  Similarly,  the  portion  of  issuance  costs  previously  allocated  to  equity  was 
reclassified  to  the  carrying  value  of  debt  and  amortized  over  the  remaining  terms  of  the  convertible  senior  notes. 
Accordingly,  the  Company  recorded  a  net  decrease  to  additional  paid-in  capital  by  $207.9  million,  net  of  tax  to 
remove the equity component separately recorded for the conversion features associated with the convertible senior 
notes and equity component associated with the issuance costs, an increase to the carrying value of its convertible 
debt instrument by $244.5 million to reflect the full principal amount of the convertible senior notes outstanding net 
of  issuance  costs,  a  decrease  to  deferred  tax  liability  of  $62.3  million,  and  a  decrease  to  accumulated  deficit  by 
$25.7  million,  net  of  tax  in  the  Company’s  consolidated  balance  sheet  with  no  impact  on  the  Company’s 
consolidated statements of operations.

Also,  upon  adoption  of  ASU  2020-06,  the  Company  is  no  longer  utilizing  the  treasury  stock  method  for 
earnings per share impact for the Notes due 2025, Notes due 2026 and Notes due 2028 (together, the “Convertible 
Senior Notes”). Instead, the Company is applying the if-converted method when reporting the number of potentially 
dilutive  shares  of  common  stock  as  the  Company  may  at  its  election,  settle  its  Convertible  Senior  Notes  through 
payment or delivery, as the case may be, in cash, shares of its common stock or a combination of cash and shares 
of its common stock. Further, the Company under the relevant sections of the indentures, irrevocably may elect to 
settle principal in cash and any excess in cash or shares of the Company’s common stock for its Convertible Senior 
Notes.  If  and  when  the  Company  makes  such  election,  there  will  be  no  adjustment  to  the  net  income  and  the 
Company will use the average share price for the period to determine the potential number of shares to be issued 
based upon assumed conversion to be included in the diluted share count.

Recently Issued Accounting Pronouncements 

Not Yet Effective 

In  October  2021,  the  FASB  issued  ASU  2021-08,  "Business  Combinations  (Topic  805):  Accounting  for 
Contract Assets and Contract Liabilities from Contracts with Customers" (“ASU 2021-08”). ASU 2021-08 requires an 
acquirer in a business combination to recognize and measure contract assets and contract liabilities acquired in a 
business  combination  in  accordance  with  ASC  606,  “Revenue  from  Contracts  with  Customers,”  as  if  it  had 
originated  the  contracts.  ASU  2021-08  is  effective  for  fiscal  years,  and  interim  periods  within  those  fiscal  years, 
beginning  after  December  15,  2022.  Early  adoption  is  permitted.  The  Company  does  not  expect  the  adoption  of 
ASU  2021-08  to  have  a  significant  impact  on  its  consolidated  financial  statements  and  will  adopt  the  standard 
effective January 1, 2023.

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ENPHASE ENERGY, INC.

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3. 

REVENUE RECOGNITION

Disaggregated Revenue

The Company has one major business activity, which is the design, manufacture and sale of solutions for the 
solar  photovoltaic  (“PV”)  industry.  Disaggregated  revenue  by  primary  geographical  market  and  timing  of  revenue 
recognition for the Company’s single product line are as follows:

Primary geographical markets:

U.S.
International
Total

Timing of revenue recognition:

Products delivered at a point in time
Products and services delivered over time
Total

Contract Balances

Years Ended December 31,

2022

2021

(In thousands)

1,761,846  $ 
569,007 
2,330,853  $ 

1,108,801 
273,248 
1,382,049 

2,253,645  $ 
77,208 
2,330,853  $ 

1,323,960 
58,089 
1,382,049 

$ 

$ 

$ 

$ 

Receivables, and contract assets and contract liabilities from contracts with customers, are as follows:

Receivables
Short-term contract assets (Prepaid expenses and other assets)
Long-term contract assets (Other assets)
Short-term contract liabilities (Deferred revenues, current)
Long-term contract liabilities (Deferred revenues, non-current)

December 31,
2022

December 31,
2021

(In thousands)

$ 

440,896  $ 

32,130 
100,991 
90,747 
281,613 

333,626 
23,508 
69,583 
62,670 
187,186 

The  Company  receives  payments  from  customers  based  upon  contractual  billing  schedules.  Accounts 
receivable  are  recorded  when  the  right  to  consideration  becomes  unconditional.  Contract  assets  include  deferred 
product  costs  and  commissions  associated  with  the  deferred  revenue  and  will  be  amortized  along  with  the 
associated revenue. The Company had no asset impairment charges related to contract assets in the year ended 
December 31, 2022.

Significant  changes  in  the  balances  of  contract  assets  (prepaid  expenses  and  other  assets)  as  of 

December 31, 2022 are as follows (in thousands): 

Contract Assets

Contract Assets, beginning of period
Amount recognized

Increase

Contract Assets, end of period

$ 

93,091 

(28,524) 

68,554 

$ 

133,121 

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Contract liabilities are recorded as deferred revenue on the accompanying consolidated balance sheets and 
include  payments  received  in  advance  of  performance  obligations  under  the  contract  and  are  realized  when  the 
associated revenue is recognized under the contract. 

Significant changes in the balances of contract liabilities (deferred revenues) as of December 31, 2022 are as 

follows (in thousands):

Contract Liabilities
Contract Liabilities, beginning of period

Revenue recognized

Increase due to billings

Contract Liabilities, end of period

Remaining Performance Obligations

$ 

249,856 

(77,208) 

199,712 

$ 

372,360 

Estimated revenue expected to be recognized in future periods related to performance obligations that are 

unsatisfied or partially unsatisfied at the end of the reporting period are as follows:

Fiscal year:

2023

2024

2025

2026

2027

Thereafter

Total

4. 

INVENTORY

Inventory consists of the following:

Raw materials

Finished goods

Total inventory

December 31,
2022
(In thousands)

$ 

90,642 

82,195 

75,016 

59,348 

39,729 

25,430 

$ 

372,360 

December 31,
2022

December 31,
2021

(In thousands)

$ 

$ 

34,978  $ 

114,730 

149,708  $ 

25,429 

48,971 

74,400 

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ENPHASE ENERGY, INC.

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5. 

PROPERTY AND EQUIPMENT, NET 

Property and equipment consist of the following:

Equipment and machinery

Furniture and fixtures

Computer equipment

Capitalized software costs

Building and leasehold improvements

Land

Construction in process

Total

Less: accumulated depreciation and amortization

Property and equipment, net

Estimated Useful 
Life

December 31,

2022

2021

(Years)

(In thousands)

3-10

5-10

3-5

3-5

3-10

$ 

114,246  $ 

95,365 

3,295 

7,543 

42,649 

15,875 

114 

31,734 

215,456 

3,197 

5,861 

28,118 

12,546 

114 

14,332 

159,533 

(104,089)   

(77,366) 

$ 

111,367  $ 

82,167 

Depreciation expense for property and equipment for the years ended December 31, 2022, 2021 and 2020 

was $27.7 million, $16.7 million and $9.7 million, respectively.

As  of  December  31,  2022  and  2021,  unamortized  capitalized  software  costs  were  $19.2  million  and 

$12.6 million, respectively.

6. 

BUSINESS COMBINATIONS

Acquisition of GreenCom Networks AG (“GreenCom”)

On  October  10,  2022,  the  Company  completed  the  acquisition  of  GreenCom,  a  privately-held  company,  for 
paid  cash  consideration  of  approximately  $34.9  million.  GreenCom  provides  Internet  of  Things  (IoT)  software 
solutions for customers to connect and manage a wide range of distributed energy devices within the home. This 
acquisition  added  headcount  to  the  Company’s  engineering  team  in  Europe  to  accelerate  clean  energy  transition 
and provide installers with a complete home energy management solution through the Enphase App.

The  acquisition  has  been  accounted  for  as  a  business  combination  under  the  acquisition  method,  and 
accordingly,  the  approximately  $34.9  million  purchase  price  is  allocated  to  the  tangible  and  identifiable  intangible 
assets acquired and liabilities assumed based on their respective fair values on the acquisition date.

The  following  table  summarizes  the  preliminary  estimated  fair  values  of  the  assets  acquired  and  liabilities 
assumed  at  the  acquisition  date,  which  are  subject  to  change  within  the  measurement  period  as  the  fair  value 
assessments are finalized (in thousands):

Net tangible liabilities acquired

Intangible assets

Deferred tax asset, net

Goodwill

Net assets acquired

$ 

(118) 

13,900 

4,578 

16,536 

34,896 

$ 

The  excess  of  the  consideration  paid  over  the  fair  values  assigned  to  the  assets  acquired  and  liabilities 
assumed  represents  the  goodwill  resulting  from  the  acquisition.  Goodwill  is  primarily  attributable  to  expected 
synergies in the Company’s solar offerings and cross-selling opportunities. None of the goodwill is expected to be 
deductible for German income tax purposes.

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ENPHASE ENERGY, INC.

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Intangible  assets  consist  primarily  of  developed  technology  and  customer  relationships.  Developed 
technology  includes  a  combination  of  unpatented  technology,  trade  secrets,  computer  software  and  research 
processes  that  facilitates  home  energy  management  through  integration  of  existing  and  planned  new  products  in 
renewable energy sector. Customer relationships relates to GreenCom’s ability to sell current and future offerings, 
as well as products built around the current offering, to its existing customers.

The  following  table  shows  the  fair  value  of  the  separately  identifiable  intangible  assets  at  the  time  of 

acquisition and the period over which each intangible asset will be amortized:

Developed technology

Customer relationships

Total identifiable intangible assets

Preliminary 
Fair Value
(In thousands)

$ 

$ 

8,000 
5,900 
13,900 

Useful Life
(Years)

5
5

Pro  forma  financial  information  has  not  been  presented  for  the  GreenCom  acquisition  as  the  impact  to  the 

Company’s consolidated financial statements was not material.

The Company incurred and accrued costs related to acquisition of $1.8 million that were recorded in general 
and  administrative  expenses  in  the  accompanying  consolidated  statements  of  operations  for  the  year  ended 
December 31, 2022.

Acquisition of SolarLeadFactory, LLC. (“SolarLeadFactory”)

On March 14, 2022, the Company completed the acquisition of SolarLeadFactory, a privately-held company. 
SolarLeadFactory  provides  high  quality  leads  to  solar  installers. As  part  of  the  purchase  price,  the  Company  paid 
approximately $26.1 million in cash on March 14, 2022. 

The  acquisition  has  been  accounted  for  as  a  business  combination  under  the  acquisition  method,  and 
accordingly,  the  total  purchase  price  is  allocated  to  the  tangible  and  identifiable  intangible  assets  acquired  and 
liabilities assumed based on their respective fair values on the acquisition date.

In  addition  to  the  purchase  price  summarized  above,  the  Company  will  be  obligated  to  issue  up  to 
approximately  $10.0  million  in  shares  of  common  stock  of  the  Company  payable  in  the  second  quarter  of  2023, 
subject to achievement of certain operational targets. As the additional payment requires continuous employment of 
certain  key  employees  of  SolarLeadFactory  and  are  subject  to  other  conditions,  these  payments  are  being 
accounted for as post-combination expense and will be recognized in the first quarter of 2023 if the conditions are 
met.

The  following  table  summarizes  the  preliminary  estimated  fair  values  of  the  assets  acquired  and  liabilities 
assumed  at  the  acquisition  date,  which  are  subject  to  change  within  the  measurement  period  as  the  fair  value 
assessments are finalized (in thousands):

Net tangible assets acquired

Intangible assets

Goodwill

Net assets acquired

$ 

$ 

2,239 

11,200 

12,612 

26,051 

The  excess  of  the  consideration  paid  over  the  fair  values  assigned  to  the  assets  acquired  and  liabilities 
assumed  represents  the  goodwill  resulting  from  the  acquisition.  Goodwill  is  primarily  attributable  to  expected 
synergies in the Company’s solar offerings and cross-selling opportunities. The entire goodwill amount is expected 
to be deductible for U.S. federal income tax purposes over 15 years.

Intangible  assets  consist  primarily  of  developed  technology  and  customer  relationships.  Developed 
technology  includes  a  combination  of  unpatented  technology,  trade  secrets,  computer  software  and  research 
processes  that  represent  the  foundation  for  the  existing  and  planned  new  products  to  facilitate  the  generation  of 

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ENPHASE ENERGY, INC.

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new content. Customer relationships relates to SolarLeadFactory’s ability to sell current and future offerings, as well 
as products built around the current offering, to its existing customers.

The  following  table  shows  the  fair  value  of  the  separately  identifiable  intangible  assets  at  the  time  of 

acquisition and the period over which each intangible asset will be amortized:

Developed technology

Customer relationships

Total identifiable intangible assets

Fair Value
(In thousands)

Useful Life
(Years)

$ 

$ 

3,600 
7,600 
11,200 

5
5

Pro forma financial information has not been presented for the SolarLeadFactory acquisition as the impact to 

the Company’s consolidated financial statements was not material.

The Company incurred and accrued costs related to acquisition of $0.4 million that were recorded in general 
and  administrative  expenses  in  the  accompanying  consolidated  statements  of  operations  for  the  year  ended 
December 31, 2022.

Acquisition of ClipperCreek, Inc. (“ClipperCreek”)

On December 31, 2021, the Company completed the acquisition of ClipperCreek, a privately-held company. 
ClipperCreek  offers  electric  vehicle  charging  solutions  for  residential  and  commercial  customers  in  the  United 
States. As part of the purchase price, the Company paid approximately $113.1 million and $3.2 million in cash on 
December 31, 2021 and June 2, 2022, respectively.

The  acquisition  has  been  accounted  for  as  a  business  combination  under  the  acquisition  method,  and 
accordingly,  the  total  purchase  price  is  allocated  to  the  tangible  and  identifiable  intangible  assets  acquired  and 
liabilities assumed based on their respective fair values on the acquisition date.

The following table summarizes the fair values of the assets acquired and liabilities (in thousands):

Net tangible assets acquired

Intangible assets

Goodwill

Net assets acquired

$ 

8,387 

37,800 

70,119 

$ 

116,306 

The  excess  of  the  consideration  paid  over  the  fair  values  assigned  to  the  assets  acquired  and  liabilities 
assumed  represents  the  goodwill  resulting  from  the  acquisition.  Goodwill  is  primarily  attributable  to  expected 
synergies in the Company’s solar offerings and cross-selling opportunities. The entire goodwill amount is expected 
to be deductible for U.S. federal income tax purposes over 15 years.

Intangible assets consist primarily of trade name and order backlog. Trade name intangible is attributable to 
marketing  goods  and  services  under  the  ClipperCreek  brand  and  order  backlog  pertains  to  purchase  orders  with 
customers yet to be fulfilled.

The  following  table  shows  the  fair  value  of  the  separately  identifiable  intangible  assets  at  the  time  of 

acquisition and the period over which each intangible asset will be amortized:

Order backlog

Trade name

Total identifiable intangible assets

Fair Value
(In thousands)

$ 

$ 

600 
37,200 
37,800 

Useful Life
(Years)
Based on 
actual 
shipments

5

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ENPHASE ENERGY, INC.

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The  consolidated  unaudited  proforma  revenue  and  net  income  for  the  two  years  presented  below,  which 
includes  the  acquisition  of  ClipperCreek,  assuming  the  acquisition  occurred  on  January  1,  2020,  were  (in 
thousands);

Net revenues
Net income

Years Ended December 31,

2021
1,401,803  $ 
145,798  $ 

2020

790,791 
139,126 

$ 
$ 

The Company incurred and accrued costs related to this acquisition of $0.3 million and $0.5 million that were 
recorded in general and administrative expenses in the consolidated statements of operations for the years ended 
December 31, 2022 and 2021, respectively.

Acquisition of 365 Pronto, Inc. (“365 Pronto”)

On December 13, 2021, the Company completed the acquisition of 365 Pronto, a privately-held company. 365 
Pronto  provides  an  online  platform  for  clean  technology  installation  and  service  landscape  by  matching  asset 
owners  with  an  on-demand  qualified  workforce  in  the  United  States. As  part  of  the  purchase  price,  the  Company 
paid approximately $69.9 million in cash on December 13, 2021. 

The  acquisition  has  been  accounted  for  as  a  business  combination  under  the  acquisition  method,  and 
accordingly,  the  total  purchase  price  is  allocated  to  the  tangible  and  identifiable  intangible  assets  acquired  and 
liabilities  assumed  based  on  their  respective  fair  values  on  the  acquisition  date.  The  results  of  operations  of  365 
Pronto have been included in the Company’s consolidated statement of operations from the acquisition date.

In addition to the purchase price above, the Company will be obligated to pay up to approximately $7.0 million 
and  $4.0  million  in  shares  of  common  stock  of  the  Company  in  the  three  months  ended  March  31,  2023  and  the 
three  months  ended  June  30,  2023,  respectively,  subject  to  achievement  of  certain  revenue,  operational  and 
employment  targets.  As  nature  of  additional  payments  represents  an  in-substance  service  period  of  certain  key 
employees  of  365  Pronto  and  are  subject  to  other  conditions,  these  payments  are  being  accounted  for  as  post-
combination expense and are recognized ratably over the term of measurement period presuming conditions will be 
met.

The  following  table  summarizes  the  fair  values  of  the  assets  acquired  and  liabilities  assumed  at  the 

acquisition date (in thousands):

Net tangible assets acquired

Intangible assets

Deferred tax liabilities

Goodwill

Net assets acquired

$ 

38 

19,500 

(2,906) 

53,280 

69,912 

$ 

The  excess  of  the  consideration  paid  over  the  fair  values  assigned  to  the  assets  acquired  and  liabilities 
assumed  represents  the  goodwill  resulting  from  the  acquisition.  Goodwill  is  primarily  attributable  to  expected 
synergies in the Company’s solar offerings and cross-selling opportunities. None of the goodwill is expected to be 
deductible for U.S. federal income tax purposes.

Intangible assets consist primarily of developed technology and customer relationship intangibles. Intangible 
assets  attributable  to  developed  technology  include  a  combination  of  unpatented  technology,  trade  secrets, 
computer software and research processes that represent the foundation for the existing and planned new products 
to facilitate the generation of new content. Customer relationship intangibles relate to 365 Pronto’s software ability 
to sell current and future offerings, as well as products built around the current offering, to its existing customers.

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The  following  table  shows  the  fair  value  of  the  separately  identifiable  intangible  assets  at  the  time  of 

acquisition and the period over which each intangible asset will be amortized:

Developed technology
Customer relationship

Total identifiable intangible assets

Fair Value
(In thousands)

$ 

$ 

18,400 
1,100 
19,500 

Useful Life
(Years)
5
5

Pro  forma  financial  information  has  not  been  presented  for  the  365  Pronto  acquisition  as  the  impact  to  the 

Company’s consolidated financial statements was not material.

The Company incurred and accrued costs related to this acquisition of $0.1 million and $0.5 million that were 
recorded in general and administrative expenses in the consolidated statements of operations for the years ended 
December 31, 2022 and 2021, respectively.

Acquisition of DIN Engineer Service LLP’s (“DIN”) Solar Design Services Business

On  March  31,  2021,  the  Company  completed  its  acquisition  of  DIN’s  solar  design  services  business.  DIN's 
solar  design  services  business  provides  outsourced  proposal  drawings  and  permit  plan  sets  for  residential  solar 
installers  in  North America  and  will  enhance  the  Company’s  digital  transformation  effort. As  part  of  the  purchase 
price, the Company paid approximately $24.8 million in cash at closing on March 31, 2021.

The acquisition has been accounted for as a business combination under the acquisition method; accordingly, 
the  total  purchase  price  is  allocated  to  the  tangible  and  identifiable  intangible  assets  acquired  and  liabilities 
assumed  based  on  their  respective  fair  values  on  the  acquisition  date.  The  results  of  operations  of  DIN’s  solar 
design  services  business  have  been  included  in  the  Company’s  consolidated  statement  of  operations  from  the 
acquisition date.

In  addition  to  the  purchase  price  summarized  above,  the  Company  was  obligated  to  pay  up  to  i) 
approximately $5.0 million in equal monthly installments over the course of one year following the acquisition date 
and  ii)  approximately  $5.0  million  payable  on  the  one  year  anniversary  following  the  acquisition  date  subject  to 
achievement of certain revenue and operational targets, which was paid in April 2022. As both additional payments 
require  continuous  employment  of  certain  key  employees  of  DIN  and  are  subject  to  other  conditions,  these 
payments were accounted for as post-combination expense and recognized ratably over the term of measurement 
period.

The  following  table  summarizes  the  fair  values  of  the  assets  acquired  and  liabilities  assumed  at  the 

acquisition date (in thousands):

Net tangible assets acquired

Intangible assets

Goodwill

Net assets acquired

$ 

$ 

1,281 

11,700 

11,804 

24,785 

The  excess  of  the  consideration  paid  over  the  fair  values  assigned  to  the  assets  acquired  and  liabilities 
assumed  represents  the  goodwill  resulting  from  the  acquisition.  Goodwill  is  primarily  attributable  to  expected 
synergies in the Company’s solar offerings and cross-selling opportunities. None of the goodwill is expected to be 
deductible for U.S. federal income tax purposes.

Intangible  assets  consist  primarily  of  customer  relationship  intangibles.  Customer  relationship  intangibles 
relate to the ability of the acquired DIN solar design services business to sell current and future offerings, as well as 
products built around the current offerings, to its existing customers.

Enphase Energy, Inc. | 2022 Form 10-K | 91

 
 
 
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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The  following  table  shows  the  fair  value  of  the  separately  identifiable  intangible  assets  at  the  time  of 

acquisition and the period over which each intangible asset will be amortized:

Customer relationship

Preliminary 
Fair Value
(In thousands)

Useful Life
(Years)

$ 

11,700 

5

Pro  forma  financial  information  has  not  been  presented  for  the  DIN's  solar  design  services  business 

acquisition as the impact to the Company’s consolidated financial statements was not material.

The  Company  incurred  costs  related  to  this  acquisition  of  $1.9  million  that  were  recorded  in  general  and 
administrative expenses in the accompanying consolidated statements of operations for the year ended December 
31, 2021.

Acquisition of Sofdesk Inc. (“Sofdesk”)

On January 25, 2021, the Company completed the acquisition of Sofdesk, a privately-held company. Sofdesk 
provides design tools and services software for residential solar installers and roofing companies and will enhance 
the Company’s digital transformation efforts.

As part of the purchase price, the Company (i) paid approximately $32.0 million in cash on January 25, 2021 
and (ii) was liable for up to approximately $3.7 million of contingent consideration payable during the first quarter of 
2022,  of  which  the  Company  recorded  a  liability  of  approximately  $3.5  million  representing  the  fair  value  of  the 
contingent consideration. The Company paid $3.7 million of contingent consideration in February 2022.

The  contingent  consideration  was  subject  to  remeasurement  at  each  reporting  period  until  paid.  The 
acquisition date fair value of the purchase price was approximately $35.5 million, which consisted of the following (in 
thousands):

Cash consideration

Fair value of contingent consideration

Total

$ 

$ 

31,988 

3,500 

35,488 

In  addition  to  the  purchase  price  discussed  above,  the  Company  was  obligated  to  pay  up  to  approximately 
$3.7 million, during the first quarter of 2022, subject to continued employment of key employees of Sofdesk. As this 
payment  was  contingent  upon  the  continuous  service  of  the  key  employees,  it  was  accounted  for  as  a  post-
combination expense and recognized ratably over the term of measurement period. The accrued post combination 
expense of $3.7 million was paid in February 2022.

The  acquisition  has  been  accounted  for  as  a  business  combination  under  the  acquisition  method,  and 
accordingly,  the  total  purchase  price  is  allocated  to  the  tangible  and  identifiable  intangible  assets  acquired  and 
liabilities assumed based on their respective fair values on the acquisition date. The results of operations of Sofdesk 
have been included in the Company’s consolidated statement of operations from the acquisition date.

Enphase Energy, Inc. | 2022 Form 10-K | 92

 
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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The  following  table  summarizes  the  fair  values  of  the  assets  acquired  and  liabilities  assumed  at  the 

acquisition date (in thousands):

Net tangible assets acquired

Intangible assets

Deferred tax asset

Goodwill

Net assets acquired

$ 

$ 

1,441 

9,200 

457 

24,390 

35,488 

The  excess  of  the  consideration  paid  over  the  fair  values  assigned  to  the  assets  acquired  and  liabilities 
assumed  represents  the  goodwill  resulting  from  the  acquisition.  Goodwill  is  primarily  attributable  to  expected 
synergies in the Company’s solar offerings and cross-selling opportunities. None of the goodwill is expected to be 
deductible for U.S. federal income tax purposes.

Intangible assets consist primarily of developed technology, customer relationship intangibles and trade name 
intangibles. Intangible assets attributable to developed technology include a combination of unpatented technology, 
trade secrets, computer software and research processes that represent the foundation for the existing and planned 
new  products  to  facilitate  the  generation  of  new  content.  Customer  relationship  intangibles  relate  to  Sofdesk’s 
software ability to sell current and future offerings, as well as products built around the current offering, to its existing 
customers.  Trade  name  intangibles  are  attributable  to  marketing  goods  and  services  under  the  SolargrafTM  and 
RoofgrafTM brands.

The  following  table  shows  the  fair  value  of  the  separately  identifiable  intangible  assets  at  the  time  of 

acquisition and the period over which each intangible asset will be amortized:

Developed technology

Customer relationship

Trade name

Total identifiable intangible assets

Fair Value
(In thousands)

Useful Life
(Years)

$ 

$ 

6,900 

1,800 

500 

9,200 

5

5

5

Pro  forma  financial  information  has  not  been  presented  for  the  Sofdesk  acquisition  as  the  impact  to  the 

Company’s consolidated financial statements was not material.

The  Company  incurred  costs  related  to  this  acquisition  of  $2.0  million  that  were  recorded  in  general  and 
administrative expenses in the accompanying consolidated statements of operations for the year ended December 
31, 2021.

7. 

GOODWILL AND INTANGIBLE ASSETS

The Company’s goodwill as of December 31, 2022 and 2021 were as follows:

Goodwill

Goodwill, beginning of period

Goodwill acquired
Currency translation adjustment

Goodwill, end of period

December 31,
2022

December 31,
2021

(In thousands)

$ 

181,254  $ 

33,354 
(1,049)   
213,559  $ 

$ 

24,783 
156,390 
81 
181,254 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The Company’s purchased intangible assets as of December 31, 2022 and 2021 were as follows:

December 31, 2022

December 31, 2021

Gross

Additions

Accumulated 
Amortization

Net

Gross

Additions

Accumulated 
Amortization

Net

(In thousands)

Intangible assets:

Other indefinite-lived 
intangibles

Intangible assets with 
finite lives:
Developed technology
Customer relationships
Trade names
Order backlog

Total purchased 
intangible assets

$ 

286  $ 

—  $ 

—  $ 

286  $ 

286  $ 

—  $ 

—  $ 

286 

  38,650 
  41,021 
  37,700 
600 

  12,394 
  14,085 
— 
— 

(17,260)    33,784 
(19,702)    35,404 
(7,633)    30,067 
— 

(600)   

  13,100 
  26,421 
— 
— 

  25,550 
  14,600 
  37,700 
600 

(8,958)    29,692 
(11,448)    29,573 
(93)    37,607 
600 
— 

$ 118,257  $  26,479  $  (45,195)  $  99,541  $  39,807  $  78,450  $  (20,499)  $  97,758 

During the year ended December 31, 2022, intangible assets acquired through GreenCom acquisition 

increased $1.4 million due to the impact of foreign currency translation.

Amortization expense related to finite-lived intangible assets were as follows:

Developed technology

Customer relationships

Trade names

Order backlog

Total amortization expense

Years Ended December 31,

2022

2021

(In thousands)

$ 

8,303  $ 

8,253 

7,540 

600 

3,681 

5,726 

93 

— 

$ 

24,696  $ 

9,500 

Amortization of developed technology is recorded to cost of sales, amortization of customer relationships and 
trade  names  are  recorded  to  sales  and  marketing  expense,  and  amortization  of  certain  customer  relationships  is 
recorded as a reduction to revenue.

The expected future amortization expense of intangible assets as of December 31, 2022 is presented below 

(in thousands):

Fiscal year:

2023

2024

2025

2026

2027

Thereafter

Total

December 31,
2022

$ 

27,144 

24,356 

23,032 

19,473 

5,217 

33 

$ 

99,255 

Enphase Energy, Inc. | 2022 Form 10-K | 94

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

8. 

CASH EQUIVALENTS AND MARKETABLE SECURITIES

The cash equivalents and marketable securities consist of the following:

Amortized Cost

Gross 
Unrealized 
Gains

As of December 31, 2022
Gross 
Unrealized 
Losses

Fair Value

Cash 
Equivalents

Marketable 
Securities

Money market funds
Certificates of deposit
Commercial paper
Corporate notes and 
bonds
U.S. Treasuries
U.S. Government 
agency securities

$ 

165,407  $ 

31,874 
148,832 

168,887 
301,349 

554,035 

—  $ 
13 
10 

2 
8 

— 

(In thousands)

—  $ 

165,407  $ 

(130)   
(171)   

(3,313)   
(132)   

31,757 
148,671 

165,576 
301,225 

165,407  $ 
— 
50,764 

— 
4,094 

— 
31,757 
97,907 

165,576 
297,131 

(6,807)   

547,228 

— 

547,228 

Total

$ 

1,370,384  $ 

33  $ 

(10,553)  $ 

1,359,864  $ 

220,265  $ 

1,139,599 

Amortized Cost

Gross 
Unrealized 
Gains

As of December 31, 2021
Gross 
Unrealized 
Losses

Fair Value

(In thousands)

Cash 
Equivalents

Marketable 
Securities

Money market funds
Certificates of deposit
Commercial paper
Corporate notes and 
bonds
U.S. Treasuries
U.S. Government 
agency securities

$ 

35,789  $ 
16,001 
215,964 

199,244 
14,999 

487,743 

—  $ 
— 
— 

— 
— 

— 

—  $ 
(2)   
(114)   

35,789  $ 
15,999 
215,850 

35,789  $ 

6,000 
26,997 

(872)   
(1)   

198,372 
14,998 

(1,870)   

485,873 

760 
— 

— 

— 
9,999 
188,853 

197,612 
14,998 

485,873 

Total

$ 

969,740  $ 

—  $ 

(2,859)  $ 

966,881  $ 

69,546  $ 

897,335 

The following table summarizes the contractual maturities of the Company’s cash equivalents and marketable 

securities as of December 31, 2022:

Due within one year
Due within one to three years

Total

Amortized Cost

Fair Value

(In thousands)

$ 

$ 

1,270,539  $ 
99,845 
1,370,384  $ 

1,262,727 
97,137 
1,359,864 

All available-for-sale securities have been classified as current, based on management's intent and ability to 

use the funds in current operations.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

9. 

 ACCRUED LIABILITIES

Accrued liabilities consist of the following:

Salaries, commissions, incentive compensation and benefits

Customer rebates and sales incentives

Freight

Operating lease liabilities, current

Liability due to supply agreements

Contingent consideration

Post combination expense accrual

Income tax payable

VAT payable

Liabilities related to restructuring activities

Other

Total accrued liabilities

10.  WARRANTY OBLIGATIONS 

The Company’s warranty activities were as follows:

Warranty obligations, beginning of period

Accruals for warranties issued during period
Changes in estimates
Settlements
Increase due to accretion expense
Other

Warranty obligations, end of period

Less: current portion

Non-current

Changes in Estimates

December 31,
2022

December 31,
2021

(In thousands)

$ 

18,009  $ 

153,916 

35,011 

5,371 

17,341 

— 

9,138 

16,146 

19,852 

714 

20,441 

13,062 

79,038 

20,522 

3,830 

14,653 

3,710 

8,602 

340 

7,231 

— 

6,924 

$ 

295,939  $ 

157,912 

Years Ended December 31,

2022

2021

2020

(In thousands)

$ 

$ 

73,377  $ 
48,703 
29,275 
(26,257)   
9,631 
(3,283)   

131,446 
(35,556)   
95,890  $ 

45,913  $ 
18,098 
19,414 
(15,073)   
4,654 
371 
73,377 
(19,395)   
53,982  $ 

37,098 
7,021 
9,954 
(12,811) 
3,255 
1,396 
45,913 
(11,260) 
34,653 

On  a  quarterly  basis,  the  Company  uses  the  best  and  most  complete  underlying  information  available, 
following  a  consistent,  systematic  and  rational  methodology  to  determine  its  warranty  obligations.  The  Company 
considers  all  available  evidence  to  assess  the  reasonableness  of  all  key  assumptions  underlying  its  estimated 
warranty obligations for each generation of microinverter. The changes in estimates discussed below resulted from 
consideration  of  new  or  additional  information  becoming  available  and  subsequent  developments.  Changes  in 
estimates included in the table above were comprised of the following:

2022

In  2022,  the  Company  recorded  $29.3  million  in  warranty  expense  from  change  in  estimates,  of  which 
$18.3  million  related  to  continuing  analysis  of  field  performance  data  and  diagnostic  root-cause  failure  analysis 
primarily for Enphase IQ Battery storage systems and prior generation products, $7.0 million related to an increase 
in expedited freight costs and replacement costs, and $4.0 million was due to an increase in labor reimbursement 
rates.

Enphase Energy, Inc. | 2022 Form 10-K | 96

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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2021

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In 2021, the Company recorded $19.4 million in warranty from changes in estimates, of which $11.6 million 
related to continuing analysis of field performance data and diagnostic root-cause failure analysis primarily relating 
to its prior generation products, and $7.8 million related to the timing of cost reduction assumptions for replacement 
products  as  the  Company  prioritizes  servicing  current  sales  demand  and  the  increase  in  component  costs  due  to 
global supply constraints.

2020

In 2020, the Company recorded a $8.8 million increase to warranty expense based on continuing analysis of 
field performance data and diagnostic root-cause failure analysis primarily relating to its prior generation products. 
The  Company  also  recorded  additional  warranty  expense  of  $1.2  million  related  to  unit  costs  for  prior  generation 
microinverter  replacement  driven  by  tariffs  and  labor  reimbursement  costs  expected  to  be  paid  to  third-party 
installers performing replacement services.

11.  FAIR VALUE MEASUREMENTS 

The accounting guidance defines fair value as the price that would be received from selling an asset or paid 
to  transfer  a  liability  in  an  orderly  transaction  between  market  participants  at  the  measurement  date.  When 
determining the fair value measurements for assets and liabilities recorded at fair value, the Company considers the 
principal  or  most  advantageous  market  in  which  it  would  transact  and  considers  assumptions  that  market 
participants  would  use  when  pricing  the  asset  or  liability,  such  as  inherent  risk,  transfer  restrictions,  and  risk  of 
nonperformance.

The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of 
unobservable inputs when measuring fair value. An asset’s or liability’s categorization within the fair value hierarchy 
is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may 
be used to measure fair value:

•

•

•

Level  1  -  Valuations  based  on  quoted  prices  in  active  markets  for  identical  assets  or  liabilities  that  the 
Company  is  able  to  access.  Since  valuations  are  based  on  quoted  prices  that  are  readily  and  regularly 
available  in  an  active  market,  valuation  of  such  assets  or  liabilities  do  not  entail  a  significant  degree  of 
judgment.

Level 2 - Valuations based on one or more quoted prices in markets that are not active or for which all 
significant inputs are observable, either directly or indirectly.

Level  3  -  Valuations  based  on  inputs  that  are  unobservable  and  significant  to  the  overall  fair  value 
measurement. 

Enphase Energy, Inc. | 2022 Form 10-K | 97

Table of Contents

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The  following  table  presents  assets  and  liabilities  measured  at  fair  value  on  a  recurring  basis  using  the  above 
input categories:

December 31, 2022

December 31, 2021

(In thousands)

Level 1

Level 2

Level 3

Level 1

Level 2

Level 3

Assets:

Cash and cash equivalents:
Money market funds
Certificates of deposit
Commercial paper
Corporate notes and bonds
U.S. Treasuries
Marketable securities:

Certificates of deposit
Commercial paper
Corporate notes and bonds
U.S. Government agencies
U.S. Treasuries

Other assets

Investments in debt securities
Total assets measured at fair value

Liabilities:

Accrued liabilities

$  165,407  $ 

— 
— 
— 
— 

— 
— 
— 
— 
— 

— 

—  $ 
— 
50,764 
— 
4,094 

—  $ 
— 
— 
— 
— 

35,789  $ 
— 
— 
— 
— 

31,757 
97,907 
165,576 
547,228 
297,131 

— 

— 
— 
— 
— 
— 

56,777 
56,777  $ 

— 
— 
— 
— 
— 

— 

—  $ 

6,000 
26,997 
760 
— 

9,999 
188,853 
197,612 
485,873 
14,998 

— 

— 
— 
— 
— 
— 

— 
— 
— 
— 
— 

41,042 
41,042 

$  165,407  $ 1,194,457  $ 

35,789  $  931,092  $ 

Contingent consideration

$ 

—  $ 

—  $ 

—  $ 

—  $ 

—  $ 

3,710 

Warranty obligations

Current
Non-current

Total warranty obligations 
measured at fair value
Total liabilities measured at fair value

$ 

— 
— 

— 
—  $ 

— 
— 

30,740 
75,749 

106,489 

— 
—  $  106,489  $ 

— 
— 

— 
—  $ 

— 
— 

14,612 
36,395 

— 
—  $ 

51,007 
54,717 

Notes due 2028, Notes due 2026 and Notes due 2025

The  Company  carries  the  Notes  due  2028  and  Notes  due  2026  at  face  value  less  issuance  costs  on  its 
consolidated balance sheets, and the Notes due 2025 at face value less unamortized discount and issuance costs 
on its consolidated balance sheets. As of December 31, 2022, the fair value of the Notes due 2028, Notes due 2026 
and  Notes  due  2025  was  $667.0  million,  $711.6  million  and  $417.2  million,  respectively.  The  fair  value  as  of 
December 31, 2022 was determined based on the closing trading price per $100 principal amount as of the last day 
of trading for the period. The Company considers the fair value of the Notes due 2028, Notes due 2026 and Notes 
due 2025 to be a Level 2 measurement as they are not actively traded.

Investments in debt securities

In  January  2021,  the  Company  invested  approximately  $25.0  million  in  a  privately-held  company.  The 
Company concluded the investment qualifies as an investment in a debt security, as it accrues interest and principal 
plus accrued interest becomes payable back to the Company at certain dates unless it is converted to equity at a 
pre-determined price. As the investment includes a conversion option, the Company has elected to account for this 
investment under the fair value option and any change in fair value of the investment is recognized in “Other income 
(expense), net” in the Company’s consolidated statement of operations for that period. Further, the Company has 
concluded that the Company’s investment in a debt security is considered to be a Level 3 measurement due to the 
use of significant unobservable inputs in the valuation model. The fair value was determined using discounted cash 
flow methodology and assumptions include implied yield and change in estimated term of investment being held-to-
maturity.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In June 2021, the Company purchased approximately $20.0 million of secured convertible promissory notes 
issued by a privately-held company. The investment qualifies as an investment in a debt security and will accrete 
interest and principal plus accrued interest becomes payable at certain dates unless it is converted to equity at a 
pre-determined price. As the investment includes a conversion option, the Company has elected to account for this 
investment under the fair value option and any change in fair value of the investment is recognized in “Other income 
(expense), net” in the Company’s consolidated statement of operations for that period. During the fourth quarter of 
2021, the Company received $26.6 million in cash in full settlement of $20.0 million principal amount of promissory 
notes and $6.6 million towards accrued and unpaid interest and change in control premium per contract terms. The 
$6.6  million  was  recognized  as  other  income  in  “Other  (expense)  income,  net”  in  the  Company’s  consolidated 
statement of operations.

In  September  2021,  the  Company  invested  approximately  $13.0  million  in  secured  convertible  promissory 
notes issued by the stockholders of a privately-held company. The investment qualifies as an investment in a debt 
security and will accrete interest and principal plus accrued interest that becomes payable at certain dates unless it 
is converted to equity at a pre-determined price. As the investment includes a conversion option, the Company has 
elected to account for this investment under the fair value option and any change in fair value of the investment is 
recognized in “Other income (expense), net” in the Company’s consolidated statement of operations for that period. 
Principal plus accrued interest receivable of the investment approximates the fair value.

In December 2022, the Company took a non-voting participating interest of approximately $15.0 million in a 
loan held by a privately-held company. The debt security qualifies as an investment in a debt security and interest 
will  be  payable  on  a  monthly  basis.  Principal  becomes  repayable  at  a  certain  date  when  a  qualified  equity 
investment or a junior debt is raised or as long as certain applicable payment conditions are satisfied. The accreted 
interest is recognized in “Other income (expense), net” in the Company’s consolidated statement of operations for 
that period. Principal plus unpaid accrued interest receivable of the investment approximates the fair value.

Investment in debt securities is recorded in “Other assets” on the accompanying consolidated balance sheet 
as of December 31, 2022. The changes in the balance in investments in debt securities during the period were as 
follows:

Balance at beginning of period

Investment
Fair value adjustments included in other (expense) income, net
Settlement

Balance at end of period

Contingent consideration

Years Ended December 31,

2022

2021

(In thousands)

41,042  $ 
15,000 
735 
— 
56,777  $ 

— 
58,000 
9,611 
(26,569) 
41,042 

$ 

$ 

The estimated fair value of the contingent consideration incurred in connection with the Company’s acquisition 
of  Sofdesk  in  the  first  quarter  of  2021  was  considered  a  Level  3  measurement  due  to  the  use  of  significant 
unobservable  inputs.  These  unobservable  inputs  included  probability  assessment  of  expected  future  customer 
count  over  the  period  in  which  the  obligation  was  expected  to  be  settled.  The  value  was  determined  using  a 
discounted  risk-neutral  expected  (probability-weighted)  cash  flow  methodology. The  resulting  expected  contingent 
consideration payment was discounted back to present value using the Company’s cost of debt. The fair value of 
contingent  consideration  arrangement  was  reassessed  quarterly  based  on  assumptions  used  in  the  Company’s 
latest  projections  and  input  provided  by  management. Any  change  in  the  fair  value  estimate,  which  could  include 
accretion  of  interest  expense  due  to  passage  of  time  as  well  as  any  changes  in  the  inputs  to  the  model,  was 
recorded in the Company’s consolidated statement of operations for that period.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The following table reflects the activity for the Company’s contingent consideration liabilities measured at fair 

value using Level 3 inputs for the year ended December 31, 2022:

Balance at beginning of period

Addition
Fair value adjustments included in other income (expense), net
Paid

Balance at end of period

Warranty obligations

Years Ended 
December 31,

2022

(In thousands)

$ 

$ 

3,710 
— 
15 
(3,725) 
— 

Fair Value Option for Warranty Obligations Related to Products Sold Since January 1, 2014 

The  Company  estimates  the  fair  value  of  warranty  obligations  by  calculating  the  warranty  obligations  in  the 
same manner as for sales prior to January 1, 2014 and applying an expected present value technique to that result. 
The  expected  present  value  technique,  an  income  approach,  converts  future  amounts  into  a  single  current 
discounted  amount.  In  addition  to  the  key  estimates  of  return  rates  and  replacement  costs,  the  Company  used 
certain Level 3 inputs which are unobservable and significant to the overall fair value measurement. Such additional 
assumptions  included  a  discount  rate  based  on  the  Company’s  credit-adjusted  risk-free  rate  and  compensation 
comprised of a profit element and risk premium required of a market participant to assume the obligation.

The following table provides information regarding changes in nonfinancial liabilities related to the Company’s 
warranty obligations measured at fair value on a recurring basis using significant unobservable inputs designated as 
Level 3 for the periods indicated:

Balance at beginning of period

Accruals for warranties issued during period

Changes in estimates

Settlements

Increase due to accretion expense

Other

Balance at end of period

Years Ended December 31,

2022

2021

(In thousands)

$ 

51,007  $ 

46,342 

23,910 

28,736 

18,098 

10,844 

(20,824)   

(11,248) 

9,632 

(3,578)   

4,654 

(77) 

$ 

106,489  $ 

51,007 

Quantitative and Qualitative Information about Level 3 Fair Value Measurements

As of December 31, 2022 and 2021, the significant unobservable inputs used in the fair value measurement 
of  the  Company’s  liabilities  designated  as  Level  3  were  as  follows,  of  which  the  monetary  impact  for  change  in 
discount rate is captured in “Other” in the table above:

Item Measured at Fair Value

Valuation 
Technique

Description of Significant 
Unobservable Input

December 31,
2022

December 31,
2021

Warranty obligations for products 
sold since January 1, 2014

Discounted cash 
flows

Profit element and risk premium

Credit-adjusted risk-free rate

16%

13%

15%

12%

Percent Used
(Weighted Average)

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Sensitivity of Level 3 Inputs - Warranty Obligations

Each of the significant unobservable inputs is independent of the other. The profit element and risk premium 
are  estimated  based  on  requirements  of  a  third-party  participant  willing  to  assume  the  Company’s  warranty 
obligations.  The  credit-adjusted  risk-free  rate  (“discount  rate”)  is  determined  by  reference  to  the  Company’s  own 
credit  standing  at  the  fair  value  measurement  date.  Increasing  the  profit  element  and  risk  premium  input  by 
100  basis  points  would  result  in  a  $0.6  million  increase  to  the  liability.  Decreasing  the  profit  element  and  risk 
premium by 100 basis points would result in a $1.1 million reduction of the liability. Increasing the discount rate by 
100 basis points would result in a $4.6 million reduction of the liability. Decreasing the discount rate by 100 basis 
points would result in a $4.4 million increase to the liability.

12.  DEBT 

The following table provides information regarding the Company’s debt:

Convertible notes

Notes due 2028

Less: unamortized debt discount

Less: unamortized debt issuance costs

Carrying amount of Notes due 2028 (1)

Notes due 2026

Less: unamortized debt discount

Less: unamortized debt issuance costs

Carrying amount of Notes due 2026 (1)

Notes due 2025

Less: unamortized debt discount

Less: unamortized debt issuance costs

Carrying amount of Notes due 2025

Notes due 2023

Less: unamortized issuance costs

Carrying amount of Notes due 2023

Total carrying amount of debt

Less: current portion of convertible notes

Debt, non-current

December 31,
2022

December 31,
2021

(In thousands)

$ 

575,000  $ 

575,000 

— 

(143,636) 

(6,705)   

(5,775) 

568,295 

425,589 

632,500 

— 

632,500 

(104,755) 

(6,307)   

(6,678) 

626,193 

521,067 

102,175 

102,175 

(10,229)   

(14,584) 

(1,054)   

90,892 

(1,539) 

86,052 

5,000 

(23)   

4,977 

5,000 

(62) 

4,938 

1,290,357 

(90,892)   

1,037,646 
(86,052) 

$ 

1,199,465  $ 

951,594 

(1) 

The net carrying amount was increased on January 1, 2022 as a result of the adoption of ASU 2020-06. Refer to Note 2. 
“Summary of Significant Accounting Policies,” in the notes to the consolidated financial statements included in Part II, Item 
8 of this Annual Report on Form 10-K for further information.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Convertible Senior Notes due 2028

On  March  1,  2021,  the  Company  issued  $575.0  million  aggregate  principal  amount  of  the  Notes  due  2028. 
The Notes due 2028 will not bear regular interest, and the principal amount of the Notes due 2028 will not accrete. 
The Notes due 2028 are general unsecured obligations and are governed by an indenture between the Company 
and U.S. Bank National Association, as trustee. The Notes due 2028 will mature on March 1, 2028, unless earlier 
repurchased  by  the  Company  or  converted  at  the  option  of  the  holders.  The  Company  received  approximately 
$566.4 million in net proceeds, after deducting the initial purchasers’ discount, from the issuance of the Notes due 
2028.

The  initial  conversion  rate  for  the  Notes  due  2028  is  3.5104  shares  of  common  stock  per  $1,000  principal 
amount of the Notes due 2028 (which represents an initial conversion price of approximately $284.87 per share). 
The conversion rate for the Notes due 2028 will be subject to adjustment upon the occurrence of certain specified 
events  but  will  not  be  adjusted  for  any  accrued  and  unpaid  special  interest,  if  any.  In  addition,  if  a  make-whole 
fundamental change or a redemption with respect to the Notes due 2028 occurs prior to the maturity date, under 
certain circumstances as specified in the relevant indenture, the Company will increase the conversion rate for the 
Notes  due  2028  by  a  number  of  additional  shares  of  the  Company’s  common  stock  for  a  holder  that  elects  to 
convert  its  notes  in  connection  with  such  make-whole  fundamental  change  or  redemption.  Upon  conversion,  the 
Company will settle conversions of the Notes due 2028 through payment or delivery, as the case may be, of cash, 
shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election.

The Company may not redeem the Notes due 2028 prior to September 6, 2024. The Company may redeem 
for cash all or any portion of the Notes due 2028, at the Company’s election, on or after September 6, 2024, if the 
last reported sale price of the Company’s common stock has been greater than or equal to 130% of the conversion 
price then in effect for the Notes due 2028 (i.e. $370.33, which is 130% of the current conversion price for the Notes 
due 2028) for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period 
ending on, and including, the trading day immediately preceding the date on which the Company provides notice of 
redemption. The redemption price will equal 100% of the principal amount of the Notes due 2028 to be redeemed, 
plus accrued and unpaid special interest, if any to, but excluding, the relevant redemption date. No sinking fund is 
provided for the Notes due 2028.

The  Notes  due  2028  may  be  converted  on  any  day  prior  to  the  close  of  business  on  the  business  day 
immediately preceding September 1, 2027, in multiples of $1,000 principal amount, at the option of the holder only 
under any of the  following circumstances: (1) during  any calendar quarter commencing after the calendar quarter 
ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Company’s 
common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading 
days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or 
equal to 130% of the conversion price for the Notes due 2028 (i.e., $370.33 which is 130% of the current conversion 
price for the Notes due 2028) on each applicable trading day; (2) during the five business day period after any five 
consecutive trading day period (the “Measurement Period”) in which the “trading price” (as defined in the relevant 
indenture) per $1,000 principal amount of notes for each trading day of the Measurement Period was less than 98% 
of the product of the last reported sale price of the Company’s common stock and the conversion rate for the Notes 
due 2028 on each such trading day; (3) if the Company calls any or all of the Notes due 2028 for redemption, at any 
time  prior  to  the  close  of  business  on  the  scheduled  trading  day  immediately  preceding  the  redemption  date;  or 
(4) upon the occurrence of specified corporate events. On and after September 1, 2027 until the close of business 
on  the  second  scheduled  trading  day  immediately  preceding  the  maturity  date  of  March  1,  2028,  holders  of  the 
Notes  due  2028  may  convert  their  notes  at  any  time,  regardless  of  the  foregoing  circumstances.  Upon  the 
occurrence  of  a  fundamental  change  (as  defined  in  the  relevant  indenture),  holders  may  require  the  Company  to 
repurchase all or a portion of their Notes due 2028 for cash at a price equal to 100% of the principal amount of the 
notes  to  be  repurchased  plus  any  accrued  and  unpaid  special  interest,  if  any,  to,  but  excluding,  the  fundamental 
change repurchase date.

into 

In accounting for the issuance of the Notes due 2028 on March 1, 2021, the Company separated the Notes 
liability  component  of 
due  2028 
approximately  $415.0  million  was  calculated  by  using  a  discount  rate  of  4.77%,  which  was  the  Company’s 
borrowing  rate  on  the  date  of  the  issuance  of  the  Notes  due  2028  for  a  similar  debt  instrument  without  the 
conversion feature. The carrying amount of the equity component of approximately $160.0 million, representing the 

liability  and  equity  components.  The  carrying  amount  of 

the 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

conversion option, was determined by deducting the fair value of the liability component from the par value of the 
Notes  due  2028.  The  equity  component  of  the  Notes  due  2028  was  included  in  additional  paid-in  capital  in  the 
consolidated  balance  sheet  through  December  31,  2021  and  was  not  remeasured.  The  difference  between  the 
principal amount of the Notes due 2028 and the liability component (the “debt discount”) was amortized to interest 
expense using the effective interest method over the term of the Notes due 2028 through December 31, 2021.

Through  December  31,  2021,  the  Company  separated  the  Notes  due  2028  into  liability  and  equity 
components  which  resulted  in  a  tax  basis  difference  associated  with  the  liability  component  that  represents  a 
temporary  difference.  The  Company  recognized  the  deferred  taxes  of  $40.1  million  for  the  tax  effect  of  that 
temporary  difference  as  an  adjustment  to  the  equity  component  included  in  additional  paid-in  capital  in  the 
consolidated balance sheet.

Debt  issuance  costs  for  the  issuance  of  the  Notes  due  2028  were  approximately  $9.1  million,  consisting  of 
initial purchasers' discount and other issuance costs. In accounting for the transaction costs, the Company allocated 
the total amount incurred to the liability and equity components using the same proportions as the proceeds from 
the Notes due 2028. Transaction costs attributable to the liability component were approximately $7.0 million, which 
were recorded as debt issuance cost (presented as contra debt in the consolidated balance sheet) and are being 
amortized to interest expense over the term of the Notes due 2028. The transaction costs attributable to the equity 
component were approximately $2.1 million and were netted with the equity component in stockholders’ equity.

Following the adoption of ASU 2020-06 as of January 1, 2022, the Company no longer records the conversion 
feature  of  Notes  due  2028  in  equity.  Instead,  the  Company  combined  the  previously  separated  equity  component 
with  the  liability  component,  which  together  is  now  classified  as  debt,  thereby  eliminating  the  subsequent 
amortization of the debt discount as interest expense. Similarly, the portion of issuance costs previously allocated to 
equity was reclassified to the carrying amount of Notes due 2028 and is amortized over the remaining term of the 
notes.  Accordingly,  the  Company  recorded  a  net  decrease  to  additional  paid-in  capital  by  approximately 
$117.3  million,  net  of  tax  to  remove  the  equity  component  separately  recorded  for  the  conversion  features 
associated  with  the  Notes  due  2028  and  equity  component  associated  with  the  issuance  costs,  an  increase  of 
approximately $141.3 million in the carrying value of Notes due 2028 to reflect the full principal amount of the Notes 
due 2028, net of issuance costs, a decrease to deferred tax liability of approximately $36.0 million, and a decrease 
to accumulated deficit of approximately $12.0 million, net of tax in the Company’s consolidated balance sheet with 
no  impact  on  the  Company’s  consolidated  statements  of  operations. As  of  December  31,  2022,  the  unamortized 
deferred issuance cost for the Notes due 2028 was $6.7 million on the consolidated balance sheet.

The  following  table  presents  the  total  amount  of  interest  cost  recognized  in  the  statement  of  operations 

relating to the Notes due 2028:

Amortization of debt discount

Amortization of debt issuance costs

Total interest cost recognized

Notes due 2028 Hedge and Warrant Transactions

Years Ended December 31,

2022

2021

(In thousands)

—  $ 

16,401 

1,296 

785 

1,296  $ 

17,186 

$ 

$ 

In  connection  with  the  offering  of  the  Notes  due  2028,  the  Company  entered  into  privately-negotiated 
convertible  note  hedge  transactions  (“Notes  due  2028  Hedge”)  pursuant  to  which  the  Company  has  the  option  to 
purchase a total of approximately 2.0 million shares of its common stock (subject to anti-dilution adjustments), which 
is the same number of shares initially issuable upon conversion of the Notes due 2028, at a price of $284.87 per 
share,  which  is  the  initial  conversion  price  of  the  Notes  due  2028.  The  total  cost  of  the  convertible  note  hedge 
transactions was approximately $161.6 million. The convertible note hedge transactions are expected generally to 
reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2028 and/or offset 
any cash payments the Company is required to make in excess of the principal amount of converted notes, as the 
case may be.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Additionally,  the  Company  separately  entered  into  privately-negotiated  warrant  transactions  (the  “2028 
Warrants”)  whereby  the  Company  sold  warrants  to  acquire  approximately  2.0  million  shares  of  the  Company’s 
common  stock  (subject  to  anti-dilution  adjustments)  at  an  initial  strike  price  of  $397.91  per  share.  The  Company 
received  aggregate  proceeds  of  approximately  $123.4  million  from  the  sale  of  the  2028  Warrants.  If  the  market 
value per share of the Company’s common stock, as measured under the 2028 Warrants, exceeds the strike price 
of the 2028 Warrants, the 2028 Warrants will have a dilutive effect on the Company’s earnings per share, unless the 
Company elects, subject to certain conditions, to settle the 2028 Warrants in cash. Taken together, the purchase of 
the  Notes  due  2028  Hedge  and  the  sale  of  the  2028  Warrants  are  intended  to  reduce  potential  dilution  from  the 
conversion of the Notes due 2028 and to effectively increase the overall conversion price from $284.87 to $397.91 
per share. The 2028 Warrants are only exercisable on the applicable expiration dates in accordance with the Notes 
due 2028 Hedge. Subject to the other terms of the 2028 Warrants, the first expiration date applicable to the Notes 
due 2028 Hedge is June 1, 2028, and the final expiration date applicable to the Notes due 2028 Hedge is July 27, 
2028.

Given  that  the  transactions  meet  certain  accounting  criteria,  the  Notes  due  2028  Hedge  and  the  2028 
Warrants transactions are recorded in stockholders’ equity, and they are not accounted for as derivatives and are 
not remeasured each reporting period.

Convertible Senior Notes due 2026

On March 1, 2021, the Company issued $575.0 million aggregate principal amount of the Notes due 2026. In 
addition,  on  March  12,  2021,  the  Company  issued  an  additional  $57.5  million  aggregate  principal  amount  of  the 
Notes due 2026 pursuant to the initial purchasers’ full exercise of the over-allotment option for additional Notes due 
2026. The Notes due 2026 will not bear regular interest, and the principal amount of the Notes due 2026 will not 
accrete.  The  Notes  due  2026  are  general  unsecured  obligations  and  are  governed  by  an  indenture  between  the 
Company  and  U.S.  Bank  National  Association,  as  trustee.  The  Notes  due  2026  will  mature  on  March  1,  2026, 
unless  earlier  repurchased  by  the  Company  or  converted  at  the  option  of  the  holders.  The  Company  received 
approximately $623.0 million in net proceeds, after deducting the initial purchasers’ discount, from the issuance of 
the Notes due 2026.

The  initial  conversion  rate  for  the  Notes  due  2026  is  3.2523  shares  of  common  stock  per  $1,000  principal 
amount of the Notes due 2026 (which represents an initial conversion price of approximately $307.47 per share). 
The conversion rate for the Notes due 2026 will be subject to adjustment upon the occurrence of certain specified 
events but will not be adjusted for accrued and unpaid interest. In addition, if a make-whole fundamental change or 
a redemption with respect to the Notes due 2026 occurs prior to the maturity date, under certain circumstances as 
specified  in  the  relevant  indenture,  the  Company  will  increase  the  conversion  rate  for  the  Notes  due  2026  by  a 
number  of  additional  shares  of  the  Company’s  common  stock  for  a  holder  that  elects  to  convert  its  notes  in 
connection  with  such  make-whole  fundamental  change  or  redemption.  Upon  conversion,  the  Company  will  settle 
conversions of Notes due 2026 through payment or delivery, as the case may be, of cash, shares of its common 
stock or a combination of cash and shares of its common stock, at the Company’s election.

The  Company  may  not  redeem  the  Notes  due  2026  prior  to  the  September  6,  2023.  The  Company  may 
redeem for cash all or any portion of the Notes due 2026, at the Company’s election, on or after September 6, 2023, 
if  the  last  reported  sale  price  of  the  Company’s  common  stock  has  been  greater  than  or  equal  to  130%  of  the 
conversion price then in effect for the Notes due 2026 (i.e., $399.71, which is 130% of the current conversion price 
for the Notes due 2026) for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive 
trading day period ending on, and including, the trading day immediately preceding the date on which the Company 
provides notice of redemption. The redemption price will equal 100% of the principal amount of the Notes due 2026 
to be redeemed, plus accrued and unpaid special interest, if any, to, but excluding, the relevant redemption date for 
the Notes due 2026. The redemption price will be increased as described in the relevant indentures by a number of 
additional shares of the Company in connection with such optional redemption by the Company. No sinking fund is 
provided for the Notes due 2026.

The  Notes  due  2026  may  be  converted  on  any  day  prior  to  the  close  of  business  on  the  business  day 
immediately preceding September 1, 2025, in multiples of $1,000 principal amount, at the option of the holder only 
under any of the  following circumstances: (1) during  any calendar quarter commencing after the calendar quarter 
ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Company’s 

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common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading 
days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or 
equal to 130% of the conversion price of the Notes due 2026 (i.e., $399.71, which is 130% of the current conversion 
price for the Notes due 2026) on each applicable trading day; (2) during the five business day period after any five 
consecutive trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant 
indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% 
of the product of the last reported sale price of the Company’s common stock and the conversion rate for Notes due 
2026 on each such trading day; (3) if the Company calls any or all of the Notes due 2026 for redemption, at any 
time  prior  to  the  close  of  business  on  the  scheduled  trading  day  immediately  preceding  the  redemption  date;  or 
(4) upon the occurrence of specified corporate events. On and after September 1, 2025 until the close of business 
on  the  second  scheduled  trading  day  immediately  preceding  the  maturity  date  of  March  1,  2026,  holders  of  the 
Notes  due  2026  may  convert  their  notes  at  any  time,  regardless  of  the  foregoing  circumstances.  Upon  the 
occurrence  of  a  fundamental  change  (as  defined  in  the  relevant  indenture),  holders  may  require  the  Company  to 
repurchase all or a portion of their Notes due 2026 for cash at a price equal to 100% of the principal amount of the 
notes  to  be  repurchased  plus  any  accrued  and  unpaid  special  interest,  if  any,  to,  but  excluding,  the  fundamental 
change repurchase date.

into 

liability  and  equity  components.  The  carrying  amount  of 

In accounting for the issuance of the Notes due 2026 on March 1, 2021, the Company separated the Notes 
due  2026 
liability  component  of 
approximately  $509.0  million  was  calculated  by  using  a  discount  rate  of  4.44%,  which  was  the  Company’s 
borrowing  rate  on  the  date  of  the  issuance  of  the  Notes  due  2026  for  a  similar  debt  instrument  without  the 
conversion feature. The carrying amount of the equity component of approximately $123.5 million, representing the 
conversion option, was determined by deducting the fair value of the liability component from the par value of the 
Notes  due  2026.  The  equity  component  of  the  Notes  due  2026  was  included  in  additional  paid-in  capital  in  the 
consolidated  balance  sheet  through  December  31,  2021  and  was  not  remeasured.  The  difference  between  the 
principal amount of the Notes due 2026 and the liability component (the “debt discount”) was amortized to interest 
expense using the effective interest method over the term of the Notes due 2026 through December 31, 2021.

the 

Through  December  31,  2021,  the  Company  separated  the  Notes  due  2026  into  liability  and  equity 
components  which  resulted  in  a  tax  basis  difference  associated  with  the  liability  component  that  represents  a 
temporary  difference.  The  Company  recognized  the  deferred  taxes  of  $31.0  million  for  the  tax  effect  of  that 
temporary  difference  as  an  adjustment  to  the  equity  component  included  in  additional  paid-in  capital  in  the 
consolidated balance sheet.

Debt issuance costs for the issuance of the Notes due 2026 were approximately $10.0 million, consisting of 
initial purchasers' discount and other issuance costs. In accounting for the transaction costs, the Company allocated 
the total amount incurred to the liability and equity components using the same proportions as the proceeds from 
the Notes due 2026. Transaction costs attributable to the liability component were approximately $8.0 million, which 
were recorded as debt issuance cost (presented as contra debt in the consolidated balance sheet) and are being 
amortized to interest expense over the term of the Notes due 2026. The transaction costs attributable to the equity 
component were approximately $2.0 million and were netted with the equity component in stockholders’ equity.

Following the adoption of ASU 2020-06 as of January 1, 2022, the Company no longer records the conversion 
feature  of  Notes  due  2026  in  equity.  Instead,  the  Company  combined  the  previously  separated  equity  component 
with  the  liability  component,  which  together  is  now  classified  as  debt,  thereby  eliminating  the  subsequent 
amortization  of  the  debt  discount.  Similarly,  the  portion  of  issuance  costs  previously  allocated  to  equity  was 
reclassified  to  the  carrying  amount  debt  and  is  amortized  over  the  remaining  term  of  the  notes. Accordingly,  the 
Company recorded a net decrease to additional paid-in capital by approximately $90.6 million, net of tax to remove 
the  equity  component  separately  recorded  for  the  conversion  features  associated  with  the  Notes  due  2026  and 
equity component associated with the issuance costs, an increase of approximately $103.2 million in the carrying 
value of its Notes due 2026 to reflect the full principal amount of the Notes due 2026 outstanding net of issuance 
costs, a decrease to deferred tax liability of approximately $26.3 million, and a decrease to accumulated deficit of 
approximately  $13.7  million,  net  of  tax  in  the  Company’s  consolidated  balance  sheet  with  no  impact  on  the 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Company’s  consolidated  statements  of  operations. As  of  December  31,  2022,  the  unamortized  deferred  issuance 
cost for the Notes due 2026 was $6.3 million on the consolidated balance sheet.

The  following  table  presents  the  total  amount  of  interest  cost  recognized  in  the  statement  of  operations 

relating to the Notes due 2026:

Amortization of debt discount
Amortization of debt issuance costs

Total interest cost recognized

Notes due 2026 Hedge and Warrant Transactions

Years Ended December 31,

2022

2021

$ 

$ 

(In thousands)
—  $ 

1,991 
1,991  $ 

18,735 
1,347 
20,082 

In connection with the offering of the Notes due 2026 (including in connection with the issuance of additional 
Notes  due  2026  upon  the  initial  purchasers’  exercise  of  their  over-allotment  option),  the  Company  entered  into 
privately-negotiated  convertible  note  hedge  transactions  (the  “Notes  due  2026  Hedge”)  pursuant  to  which  the 
Company has the option to purchase a total of approximately 2.1 million shares of its common stock (subject to anti-
dilution adjustments), which is the same number of shares initially issuable upon conversion of the Notes due 2026, 
at  a  price  of  $307.47  per  share,  which  is  the  initial  conversion  price  of  the  Notes  due  2026. The  total  cost  of  the 
Notes  due  2026  Hedge  was  approximately  $124.6  million. The  Notes  due  2026  Hedge  are  expected  generally  to 
reduce potential dilution to the Company’s common stock upon any conversion of the Notes due 2026 and/or offset 
any cash payments the Company is required to make in excess of the principal amount of converted notes, as the 
case may be.

Additionally,  the  Company  separately  entered  into  privately-negotiated  warrant  transactions,  including  in 
connection  with  the  issuance  of  additional  Notes  due  2026  upon  the  initial  purchasers’  exercise  of  their  over-
allotment  option  (the  “2026  Warrants”),  whereby  the  Company  sold  warrants  to  acquire  approximately  2.1  million 
shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of $397.91 per 
share.  The  Company  received  aggregate  proceeds  of  approximately  $97.4  million  from  the  sale  of  the  2026 
Warrants. If the market value per share of the Company’s common stock, as measured under the 2026 Warrants, 
exceeds  the  strike  price  of  the  2026  Warrants,  the  2026  Warrants  will  have  a  dilutive  effect  on  the  Company’s 
earnings per share, unless the Company elects, subject to certain conditions, to settle the 2026 Warrants in cash. 
Taken  together,  the  purchase  of  the  Notes  due  2026  Hedge  and  the  sale  of  the  2026  Warrants  are  intended  to 
reduce  potential  dilution  from  the  conversion  of  the  Notes  due  2026  and  to  effectively  increase  the  overall 
conversion  price  from  $307.47  to  $397.91  per  share.  The  2026  Warrants  are  only  exercisable  on  the  applicable 
expiration dates in accordance with the  2026 Warrants.  Subject  to  the  other terms  of  the  2026 Warrants, the first 
expiration  date  applicable  to  the  Warrants  is  June  1,  2026,  and  the  final  expiration  date  applicable  to  the  2026 
Warrants is July 27, 2026.

Given  that  the  transactions  meet  certain  accounting  criteria,  the  Notes  due  2026  hedge  and  the  2026 
Warrants transactions are recorded in stockholders’ equity, and they are not accounted for as derivatives and are 
not remeasured each reporting period.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Convertible Senior Notes due 2025 

On  March  9,  2020,  the  Company  issued  $320.0  million  aggregate  principal  amount  of  the  Notes  due  2025. 
The  Notes  due  2025  are  general  unsecured  obligations  and  bear  interest  at  an  annual  rate  of  0.25%  per  year, 
payable semi-annually on March 1 and September 1 of each year, beginning September 1, 2020. The Notes due 
2025  are  governed  by  an  indenture  between  the  Company  and  U.S.  Bank  National Association,  as  trustee.  The 
Notes  due  2025  will  mature  on  March  1,  2025,  unless  earlier  repurchased  by  the  Company  or  converted  at  the 
option  of  the  holders. The  Company  may  not  redeem  the  notes  prior  to  the  maturity  date,  and  no  sinking  fund  is 
provided  for  the  notes. The  Notes  due  2025  may  be  converted,  under  certain  circumstances  as  described  below, 
based  on  an  initial  conversion  rate  of  12.2637  shares  of  common  stock  per  $1,000  principal  amount  (which 
represents  an  initial  conversion  price  of  $81.54  per  share).  The  conversion  rate  for  the  Notes  due  2025  will  be 
subject  to  adjustment  upon  the  occurrence  of  certain  specified  events  but  will  not  be  adjusted  for  accrued  and 
unpaid interest. In addition, upon the occurrence of a make-whole fundamental change (as defined in the relevant 
indenture),  the  Company  will,  in  certain  circumstances,  increase  the  conversion  rate  by  a  number  of  additional 
shares for a holder that elects to convert its notes in connection with such make-whole fundamental change. The 
Company  received  approximately  $313.0  million  in  net  proceeds,  after  deducting  the  initial  purchasers’  discount, 
from the issuance of the Notes due 2025.

The  Notes  due  2025  may  be  converted  prior  to  the  close  of  business  on  the  business  day  immediately 
preceding  September  1,  2024,  in  multiples  of  $1,000  principal  amount,  at  the  option  of  the  holder  only  under  the 
following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 
2020 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at 
least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and 
including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the 
conversion price on each applicable trading day; (2) during the five business day period after any five consecutive 
trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant indenture) per 
$1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product 
of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; or 
(3) upon the occurrence of specified corporate events. On and after September 1, 2024 until the close of business 
on  the  second  scheduled  trading  day  immediately  preceding  the  maturity  date  of  March  1,  2025,  holders  may 
convert their notes at any time, regardless of the foregoing circumstances. Upon the occurrence of a fundamental 
change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of 
their Notes due 2025 for cash at a price equal to 100% of the principal amount of the notes to be repurchased plus 
any accrued and unpaid interest to, but excluding, the fundamental change repurchase date. 

As  of  December  31,  2022  and  2021,  the  sale  price  of  the  Company’s  common  stock  was  greater  than  or 
equal  to  $106.00  (130%  of  the  notes  conversion  price)  for  at  least  20  trading  days  (whether  consecutive  or  not) 
during  a  period  of  30  consecutive  trading  days  preceding  the  quarter-ended  December  31,  2022  and  2021. As  a 
result, as of January 1, 2023, the Notes due 2025 are convertible at the holders’ option through March 31, 2023. 
Accordingly,  the  Company  classified  the  net  carrying  amount  of  the  Notes  due  2025  of  $90.9  million  and 
$86.1 million as Debt, current on the consolidated balance sheet as of December 31, 2022 and December 31, 2021, 
respectively. From January 1, 2023 through the date this Annual Report on Form 10-K is available to be issued, the 
Company has not received any requests for conversion of the Notes due 2025.

For the period from March 9, 2020, the issuance date, through May 19, 2020, the number of authorized and 
unissued  shares  of  the  Company’s  common  stock  that  are  not  reserved  for  other  purposes  was  less  than  the 
maximum number of underlying shares that would be required to settle the Notes due 2025 into equity. Accordingly, 
unless and until the Company had a number of authorized shares that were not issued or reserved for any other 
purpose that equaled or exceeded the maximum number of underlying shares (the “Share Reservation Condition”), 
the Company would have been required to pay to the converting holder in respect of each $1,000 principal amount 
of notes being converted solely in cash in an amount equal to the sum of the daily conversion values for each of the 
20  consecutive  trading  days  during  the  related  observation  period.  However,  following  satisfaction  of  the  Share 
Reservation  Condition,  the  Company  could  settle  conversions  of  notes  through  payment  or  delivery,  as  the  case 
may be, of cash, shares of the Company’s common stock or a combination of cash and shares of its common stock, 
at  the  Company’s  election.  As  further  discussed  below,  the  Company  satisfied  the  Share  Reservation  Condition 
during May 2020.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In accounting for the issuance of the Notes due 2025, on March 9, 2020, the conversion option of the Notes 
due 2025 was deemed an embedded derivative requiring bifurcation from the Notes due 2025 (the “host contract”) 
and separate accounting as an embedded derivative liability, as a result of the Company not having the necessary 
number of authorized but unissued shares of its common stock available to settle the conversion option of the Notes 
due 2025 in shares. The proceeds from the Notes due 2025 were first allocated to the embedded derivative liability 
and the remaining proceeds were then allocated to the host contract. On March 9, 2020, the carrying amount of the 
embedded derivative liability of $68.7 million representing the conversion option was determined using the Binomial 
Lattice  model  and  the  remaining  $251.3  million  was  allocated  to  the  host  contract.  The  difference  between  the 
principal amount of the Notes due 2025 and the fair value of the host contract (the “debt discount”) is amortized to 
interest expense using the effective interest method over the term of the Notes due 2025.

On  May  20,  2020,  at  the  Company’s  annual  meeting  of  stockholders,  the  stockholders  approved  an 
amendment to the Amended and Restated Certificate of Incorporation to increase the number of authorized shares 
of the Company’s common stock, par value $0.00001 per share, from 150,000,000 shares to 200,000,000 shares 
(the  “Amendment”).  The  Amendment  became  effective  upon  filing  with  the  Secretary  of  State  of  Delaware  on 
May 20, 2020. As a result, the Company satisfied the Share Reservation Condition. The Company may now settle 
the  Notes  due  2025  and  warrants  issued  in  conjunction  with  the  Notes  due  2025  (the  “2025  Warrants”)  through 
payment or delivery, as the case may be, of cash, shares of its common stock or a combination of cash and shares 
of its common stock, at the Company’s election. Accordingly, on May 20, 2020, the embedded derivative liability was 
remeasured  at  a  fair  value  of  $116.3  million  and  was  then  reclassified  to  additional  paid-in-capital  in  the 
consolidated balance sheet in the second quarter of 2020 and is no longer remeasured as long as it continues to 
meet the conditions for equity classification. The Company recorded the change in the fair value of the embedded 
derivative in other expense, net in the consolidated statement of operations during the year ended December 31, 
2020.

The Company separated the Notes due 2025 into liability and equity components which resulted in a tax basis 
difference associated with the liability component that represents a temporary difference. The Company recognized 
the  deferred  taxes  of  $0.2  million  for  the  tax  effect  of  that  temporary  difference  as  an  adjustment  to  the  equity 
component included in additional paid-in capital in the consolidated balance sheet.

Debt  issuance  costs  for  the  issuance  of  the  Notes  due  2025  were  approximately  $7.6  million,  consisting  of 
initial purchasers' discount and other issuance costs. In accounting for the transaction costs, the Company allocated 
the total amount incurred to the Notes due 2025 host contract. Transaction costs were recorded as debt issuance 
cost (presented as contra debt in the consolidated balance sheet) and are being amortized to interest expense over 
the term of the Notes due 2025. 

Partial repurchase of Notes due 2025

Concurrently  with  the  offering  of  the  Notes  due  2026  and  Notes  due  2028,  the  Company  entered  into 
separately-  and  privately-negotiated  transactions  to  repurchase  approximately  $217.7  million  aggregate  principal 
amount  of  the  Notes  due  2025.  The  Company  paid  $217.7  million  in  cash  and  issued  approximately  1.67  million 
shares of its common stock to the holders of the repurchased notes with an aggregate fair value of $302.7 million, 
representing the conversion value in excess of the principal amount of the Notes due 2025, which were fully offset 
by shares received from the Company’s settlement of the associated note hedging arrangements discussed below. 
The  total  amount  of  $217.7  million  paid  to  partially  settle  the  repurchases  of  the  Notes  due  2025  was  allocated 
between the liability and equity components of the amount extinguished by determining the fair value of the liability 
component  immediately  prior  to  the  note  repurchases  and  allocating  that  portion  of  the  conversion  price  to  the 
liability  component  in  the  amount  of  $184.5  million.  The  residual  of  the  conversion  price  of  $4.3  million  of  the 
repurchased Notes due 2025, net of inducement loss of $37.5 million for additional shares issued, was allocated to 
the equity component of the repurchased Notes due 2025 as an increase of additional paid-in capital. The fair value 
of  the  note  settlement  for  such  repurchases  was  calculated  using  a  discount  rate  of  4.35%,  representing  an 
estimate of the Company's borrowing rate at the date of repurchase with a remaining expected life of approximately 
4.1  years. As  part  of  the  settlement  of  the  repurchase  of  the  Notes  due  2025,  the  Company  wrote-off  the  $38.5 
million unamortized debt discount and $4.1 million debt issuance cost apportioned to the principal amount of Notes 
due 2025 repurchased. The Company recorded a loss on partial settlement of the repurchased Notes due 2025 of 
$9.4  million  in  Other  income  (expense),  net  in  the  year  ended  December  31,  2021,  representing  the  difference 
between the consideration attributed to the liability component and the sum of the net carrying amount of the liability 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

component and unamortized debt issuance costs. Further, the Company also recorded loss on inducement of $37.5 
million in Other income (expense), net in the year ended December 31, 2021, representing the difference between 
the  fair  value  of  the  shares  that  would  have  been  issued  under  the  original  conversion  terms  with  respect  to  the 
repurchased Notes due 2025.

During  the  second  quarter  of  2021,  $0.1  million  in  aggregate  principal  amount  of  the  Notes  due  2025  were 
converted, and the principal amount of the converted Notes due 2025 was repaid in cash. In connection with such 
conversions during the second quarter of 2021, the Company also issued 485 shares of its common stock to the 
holders of the converted Notes due 2025, with an aggregate fair value of $0.1 million, representing the conversion 
value in excess of the principal amount of the Notes due 2025, which were fully offset by shares received from the 
settlements  of  the  associated  note  hedging  arrangements.  Following  the  repurchase  transactions  summarized 
above,  as  of  December  31,  2022  and  2021,  $102.2  million  aggregate  principal  amount  of  the  Notes  due  2025 
remained outstanding.

The following table presents the total amount of interest cost recognized relating to the Notes due 2025:

Contractual interest expense

Amortization of debt discount

Amortization of debt issuance costs

Total interest cost recognized

Years Ended December 31,

2022

2021

(In thousands)

256  $ 

4,355 

486 

5,097  $ 

342 

5,529 

661 

6,532 

$ 

$ 

The derived effective interest rate on the Notes due 2025 host contract was determined to be 5.18%, which 
remains  unchanged  from  the  date  of  issuance. The  remaining  unamortized  debt  discount  was  $10.2  million  as  of 
December 31, 2022, and will be amortized over approximately 2.2 years from December 31, 2022.

Notes due 2025 Hedge and Warrant Transactions

In  connection  with  the  offering  of  the  Notes  due  2025,  the  Company  entered  into  privately-negotiated 
convertible note hedge transactions (the “Notes due 2025 Hedge”) pursuant to which the Company has the option 
to  purchase  a  total  of  approximately  3.9  million  shares  of  its  common  stock  (subject  to  anti-dilution  adjustments), 
which is the same number of shares initially issuable upon conversion of the notes, at a price of $81.54 per share, 
which is the initial conversion price of the Notes due 2025. The total cost of the convertible note hedge transactions 
was  approximately  $89.1  million.  The  convertible  note  hedge  transactions  are  expected  generally  to  reduce 
potential  dilution  to  the  Company’s  common  stock  upon  any  conversion  of  the  Notes  due  2025  and/or  offset  any 
cash payments the Company is required to make in excess of the principal amount of converted notes, as the case 
may be.

Additionally, the Company separately entered into privately-negotiated warrant transactions in connection with 
the  offering  of  the  Notes  due  2025  whereby  the  Company  sold  the  2025  Warrants  to  acquire  approximately 
3.9 million shares of the Company’s common stock (subject to anti-dilution adjustments) at an initial strike price of 
$106.94 per share. The Company received aggregate proceeds of approximately $71.6 million from the sale of the 
2025  Warrants.  If  the  market  value  per  share  of  the  Company’s  common  stock,  as  measured  under  the  2025 
Warrants,  exceeds  the  strike  price  of  the  2025  Warrants,  the  2025  Warrants  will  have  a  dilutive  effect  on  the 
Company’s  earnings  per  share,  unless  the  Company  elects,  subject  to  certain  conditions,  to  settle  the  2025 
Warrants  in  cash.  Taken  together,  the  purchase  of  the  convertible  note  hedges  in  connection  with  the  Notes  due 
2025 Hedge and the sale of the 2025 Warrants are intended to reduce potential dilution from the conversion of the 
Notes due 2025 and to effectively increase the overall conversion price from $81.54 to $106.94 per share. The 2025 
Warrants are only exercisable on the applicable expiration dates in accordance with the agreements relating to each 
of  the  2025  Warrants.  Subject  to  the  other  terms  of  the  2025  Warrants,  the  first  expiration  date  applicable  to  the 
2025  Warrants  is  June  1,  2025,  and  the  final  expiration  date  applicable  to  the  2025  Warrants  is  September  23, 
2025.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

During  the  first  quarter  of  2021,  in  connection  with  the  repurchase  of  $217.7  million  aggregate  principal 
amount  of  the  Notes  due  2025  summarized  above,  the  Company  entered  into  partial  unwind  agreements  with 
respect  to  certain  of  the  Notes  due  2025  Hedge  and  the  2025  Warrants.  In  connection  with  these  unwind 
transactions,  the  Company  received  shares  of  the  Company’s  common  stock  as  a  termination  payment  for  the 
portion of the Notes due 2025 Hedge that were unwound, and the Company issued shares of its common stock as a 
termination payment for the portion of the 2025 Warrants that were unwound. As a result of the unwind agreements 
for the Notes due 2025 Hedge and the 2025 Warrants, the Company received 1.9 million of the Company’s common 
stock from the Notes due 2025 Hedge settlement and issued 1.8 million of the Company’s common stock from the 
2025  Warrants  that  were  unwound.  Following  the  unwind  transactions  summarized  above,  as  of  December  31, 
2022, options to purchase approximately 1.3 million shares of common stock remained outstanding under the Notes 
due  2025  Hedge,  and  2025  Warrants  exercisable  to  purchase  approximately  1.3  million  shares  remained 
outstanding.

For  the  period  from  March  9,  2020,  the  issuance  date  of  the  Notes  due  2025  Hedge  and  2025  Warrants, 
through May 19, 2020, the number of authorized and unissued shares of the Company’s common stock that are not 
reserved for other purposes was less than the maximum number of underlying shares that will be required to settle 
the  Notes  due  2025  through  the  delivery  of  shares  of  the  Company’s  common  stock. Accordingly,  the  Notes  due 
2025 Hedge and 2025 Warrants could only be settled on net cash settlement basis. As a result, the Notes due 2025 
Hedge  and  2025  Warrants  were  classified  as  a  convertible  notes  hedge  asset  and  2025  Warrants  liability, 
respectively,  in  the  consolidated  balance  sheet  and  the  change  in  fair  value  of  derivatives  was  included  in  other 
expense, net in the consolidated statement of operations.

On  May  20,  2020,  at  the  Company’s  annual  meeting  of  stockholders,  the  stockholders  approved  the 
Amendment and satisfied the Share Reservation Condition (as discussed above), and as a result, the convertible 
notes  hedge  asset  and  the  2025  Warrants  liabilities  were  remeasured  at  a  fair  value  of  $117.1  million  and  $96.4 
million, respectively, and were then reclassified to additional paid-in-capital in the consolidated balance sheet in the 
second  quarter  of  2020  and  is  no  longer  remeasured  as  long  as  they  continue  to  meet  the  conditions  for  equity 
classification. The change in the fair value of the convertible notes hedge asset and the 2025 Warrants liability were 
recorded in other expense, net in the consolidated statements of operations during the year ended December 31, 
2021.

Convertible Senior Notes due 2023

In August 2018, the Company sold $65.0 million aggregate principal amount of 4.0% convertible senior notes 
due 2023 (the “Notes due 2023”) in a private placement. On May 30, 2019, the Company entered into separately 
and  privately-negotiated  transactions  with  certain  holders  of  the  Notes  due  2023  resulting  in  the  repurchase  and 
exchange,  as  of  June  5,  2019,  of  $60.0  million  aggregate  principal  amount  of  the  notes  in  consideration  for  the 
issuance  of  10,801,080  shares  of  common  stock  and  separate  cash  payments  totaling  $6.0  million.  As  of  both 
December  31,  2022  and  December  31,  2021,  $5.0  million  aggregate  principal  amount  of  the  Notes  due  2023 
remained outstanding. 

The remaining outstanding Notes due 2023 are general unsecured obligations and bear interest at a rate of 
4.0% per year, payable semi-annually on February 1 and August 1 of each year. The Notes due 2023 are governed 
by an indenture between the Company and U.S. Bank National Association, as trustee. The remaining outstanding 
Notes  due  2023  will  mature  on August  1,  2023,  unless  earlier  repurchased  by  the  Company  or  converted  at  the 
option of the holders. The Company may not redeem the remaining Notes due 2023 prior to the maturity date, and 
no sinking fund is provided for such notes. The remaining Notes due 2023 are convertible, at a holder’s election, in 
multiples  of  $1,000  principal  amount,  into  shares  of  the  Company’s  common  stock  based  on  the  applicable 
conversion rate. The initial conversion rate for such notes is 180.018 shares of common stock per $1,000 principal 
amount  of  notes  (which  is  equivalent  to  an  initial  conversion  price  of  approximately  $5.56  per  share).  The 
conversion rate and the corresponding conversion price are subject to adjustment upon the occurrence of certain 
events but will not be adjusted for any accrued and unpaid interest. Holders of the remaining Notes due 2023 who 
convert their notes in connection with a make-whole  fundamental change (as defined in the applicable indenture) 
are,  under  certain  circumstances,  entitled  to  an  increase  in  the  conversion  rate.  Additionally,  in  the  event  of  a 
fundamental  change,  holders  of  the  remaining  Notes  due  2023  may  require  the  Company  to  repurchase  all  or  a 
portion  of  their  notes  at  a  price  equal  to  100%  of  the  principal  amount  of  notes,  plus  any  accrued  and  unpaid 
interest,  including  any  additional  interest  to,  but  excluding,  the  repurchase  date.  Holders  may  convert  all  or  any 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

portion  of  their  Notes  due  2023  at  their  option  at  any  time  prior  to  the  close  of  business  on  the  business  day 
immediately preceding the maturity date, in multiples of $1,000 principal amount.

The following table presents the amount of interest cost recognized relating to the contractual interest coupon 

and the amortization of debt issuance costs of the Notes due 2023:

Contractual interest expense

Amortization of debt issuance costs

Total interest costs recognized

13.  COMMITMENTS AND CONTINGENCIES

Operating Leases

Years Ended December 31,

2022

2021

(In thousands)

200  $ 

40 

240  $ 

200 

40 

240 

$ 

$ 

The  Company  leases  office  facilities  under  noncancellable  operating  leases  that  expire  on  various  dates 

through 2032, some of which may include options to extend the leases for up to 12 years.

The components of lease expense are presented as follows:

Operating lease costs

The components of lease liabilities are presented as follows:

Years Ended December 31,

2022

2021

(In thousands)

$ 

8,222  $ 

7,049 

December 31,
2022

December 31,
2021

Operating lease liabilities, current (Accrued liabilities)
Operating lease liabilities, non-current (Other liabilities)

Total operating lease liabilities

$ 

$ 

19,077 
24,448  $ 

3,830 
11,920 
15,750 

(In thousands except years and 
percentage data)
5,371  $ 

Supplemental lease information:
Weighted average remaining lease term
Weighted average discount rate

5.3 years
6.5%

5.9 years
7.4%

Supplemental cash flow and other information related to operating leases, were as follows:

Cash paid for amounts included in the measurement of lease liabilities:

Operating cash flows from operating leases

$ 

5,691  $ 

5,855 

Non-cash investing activities:

Lease liabilities arising from obtaining right-of-use assets

$ 

13,308  $ 

708 

Years Ended December 31,

2022

2021

(In thousands)

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Undiscounted cash flows of operating lease liabilities as of December 31, 2022 were as follows:

Year:

2023

2024

2025

2026

2027

Thereafter

Total lease payments

Less: imputed lease interest

Total lease liabilities

Purchase Obligations

Lease Amounts
(In thousands)

$ 

6,805 

6,045 

5,218 

3,532 

2,250 

5,142 

28,992 

(4,544) 

$ 

24,448 

The  Company  has  contractual  obligations  related  to  component  inventory  that  its  contract  manufacturers 
procure  on  its  behalf  in  accordance  with  its  production  forecast  as  well  as  other  inventory  related  purchase 
commitments. As of December 31, 2022, these purchase obligations totaled approximately $589.3 million.

Litigation

From time-to-time, the Company may be involved in litigation relating to claims arising out of its operations, 
the ultimate disposition of which could have a material adverse effect on its operations, financial condition or cash 
flows.  The  Company  is  not  currently  involved  in  any  material  legal  proceedings;  however,  the  Company  may  be 
involved  in  material  legal  proceedings  in  the  future.  Such  matters  are  subject  to  uncertainty  and  there  can  be  no 
assurance that such legal proceedings will not have a material effect on its business, results of operations, financial 
position or cash flows.

14.  STOCKHOLDERS' EQUITY

On  May  19,  2021,  at  the  Company’s  annual  meeting  of  stockholders,  the  stockholders  approved  an 
amendment to the Amended and Restated Certificate of Incorporation to increase the number of authorized shares 
of the Company’s common stock, par value $0.00001 per share, from 200,000,000 shares to 300,000,000 shares 
(the “Amendment”). The Amendment became effective upon filing with the Secretary of State of Delaware on May 
19, 2021.

In  April  2020,  the  Company’s  board  of  directors  authorized  the  repurchase  of  up  to  $200.0  million  of  the 
Company’s  common  stock,  exclusive  of  brokerage  commissions  (the  “2020  Repurchase  Program”).  During  the 
second  quarter  of  2021,  the  Company  repurchased  and  subsequently  retired  approximately  1.7  million  shares  of 
common  stock  from  the  open  market  at  an  average  cost  of  $117.47  per  share  for  a  total  of  $200.0  million.  The 
transaction is recorded as “Repurchase of common stock” in the accompanying consolidated statements of changes 
in stockholders’ equity.

In  May  2021,  the  board  of  directors  authorized  a  new  share  repurchase  program  (the  “2021  Repurchase 
Program”)  pursuant  to  which  the  Company  may  repurchase  up  to  an  additional  $500.0  million  of  the  Company’s 
common stock. Purchases may be completed from time to time in the open market or through structured repurchase 
agreements with third parties. The program may be discontinued or amended at any time and expires on May 13, 
2024. As of December 31, 2022, the Company has approximately $200.0 million remaining for repurchase of shares 
under the 2021 Repurchase Program.

Enphase Energy, Inc. | 2022 Form 10-K | 112

 
 
 
 
 
 
 
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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

15.  STOCK-BASED COMPENSATION

2011 Plan

Under  the  2011  Equity  Incentive  Plan  (the  “2011  Plan”),  the  Company  could  initially  issue  up  to 
2,643,171 shares of its common stock pursuant to stock options, stock appreciation rights (“SARS”), restricted stock 
awards  (“RSA”),  RSUs,  PSUs,  and  other  forms  of  equity  compensation,  or  collectively,  stock  awards,  all  of  which 
may be granted to employees, including officers, and to non-employee directors and consultants. Options granted 
under  the  2011  Plan  before  August  1,  2012  generally  expire  10  years  after  the  grant  date  and  options  granted 
thereafter generally expire seven years after the grant date. Equity awards granted under the 2011 Plan generally 
vest over a four year period from the date of grant based on continued employment. As of May 19, 2021, no further 
stock options or other stock awards may be granted under the 2011 Plan. 

2021 Plan

On May 19, 2021, at the 2021 annual meeting of stockholders of the Company, the stockholders approved the 
2021  Equity  Incentive  Plan  (the  “2021  Plan”),  as  the  successor  to  the  2011  Plan. The  2021  Plan  provides  for  the 
grant of incentive stock options, SARS, RSAs, RSUs, PSUs other stock awards. Eligible participants under the 2021 
Plan include Company’s employees, directors and consultants. The 2021 Plan provides, among other things, that 
the number of shares of the Company’s common stock, $0.00001 par value per share (“Common Stock”), reserved 
for  issuance  under  the  2021  Plan  (subject  to  adjustment  for  certain  changes  in  the  Company’s  capitalization)  is 
equal to: (A) the sum of (i) 9,100,456 newly reserved shares of Common Stock and (ii) 5,256,517 Returning Shares 
(as  defined  below)  as  such  shares  become  available  from  time  to  time  as  set  forth  in  the  2021  Plan.  “Returning 
Shares” means shares subject to any outstanding award granted under the 2011 Plan (“Prior Plan Award”) that are 
(i) not issued because such Prior Plan Award or any portion thereof expires or otherwise terminates without all of 
the  shares  covered  by  such  Prior  Plan  Award  having  been  issued,  or  is  settled  in  cash;  (ii)  forfeited  back  to  or 
repurchased  by  the  Company  because  of  a  failure  to  vest;  or  (iii)  reacquired  or  withheld  (or  not  issued)  by  the 
Company to satisfy the purchase price of, or a tax withholding obligation in connection with, a Prior Plan Award that 
is  a  Full  Value Award  (as  defined  in  the  2021  Plan). As  a  result  of  the  approval  of  the  2021  Plan,  no  additional 
awards  may  be  granted  from  the  2011  Plan. As  of  December  31,  2022,  6,671,002  shares  remained  available  for 
issuance pursuant to future grants under the 2021 Plan.

2011 Employee Stock Purchase Plan

The  2011  Employee  Stock  Purchase  Plan  (“ESPP”)  became  effective  immediately  upon  the  execution  and 
delivery  of  the  underwriting  agreement  for  the  Company’s  initial  public  offering  on  March  29,  2012.  The  ESPP 
authorized the issuance of 669,603 shares of the Company’s common stock pursuant to purchase rights granted to 
employees.  The  number  of  shares  of  common  stock  reserved  for  issuance  will  automatically  increase,  on  each 
January  1,  by  a  lesser  of  (i)  330,396  shares  of  the  Company’s  common  stock  or  (ii)  1.0%  of  the  total  number  of 
shares  of  the  Company’s  common  stock  outstanding  on  December  31  of  the  preceding  calendar  year,  as 
determined by the Company’s board of directors. At the Annual Meeting of Stockholders held on May 18, 2017 the 
Company’s  stockholders  approved  a  one-time  amendment  to  the  Company’s  ESPP  to  increase  the  aggregate 
number  of  shares  available  for  purchase  by  400,000  shares  and  to  increase  the  annual  automatic  minimum 
increase  in  shares  reserved  for  issuance  from  330,396  to  700,000  shares  effective  January  1,  2018.  In  October 
2022, the Company’s board of directors voted to decline the automatic increase of 700,000 shares that were to be 
added  on  January  1,  2023  for  issuance  under  the  2011  ESPP  plan. As  of  December  31,  2022,  1,664,217  shares 
remained available for future issuance under the ESPP.

The  ESPP  is  implemented  by  concurrent  offering  periods  and  each  offering  period  may  contain  up  to 
four  interim  purchase  periods.  In  general,  offering  periods  consist  of  the  24-month  periods  commencing  on  each 
May 15 and November 15 of a calendar year.

Enphase Energy, Inc. | 2022 Form 10-K | 113

Table of Contents

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Generally, all full-time employees in Australia, Canada, China, France, Germany, India, Mexico, New Zealand, 
the  Netherlands  and  the  United  States,  including  executive  officers,  are  eligible  to  participate  in  the  ESPP.  The 
ESPP permits eligible employees to purchase the Company’s common stock through payroll deductions, which may 
not exceed 15% of the employee’s total compensation subject to certain limits. Stock may be purchased under the 
plan at a price equal to 85% of the fair market value of the Company’s stock on either the date of purchase or the 
first day of an offering period, whichever is lower. A two-year look-back feature in the Company’s ESPP causes an 
offering period to reset if the fair value of the Company’s common stock on a purchase date is less than that on the 
initial offering date for that offering period. The reset feature, when triggered, will be accounted for as a modification 
to  the  original  offering,  resulting  in  additional  expense  to  be  recognized  over  the  24-month  period  of  the  new 
offering. During any calendar year, participants may not purchase shares of common stock having a value greater 
than $25,000, based on the fair market value per share of the common stock at the beginning of an offering period.

Valuation of Equity Awards

Stock Options

The  fair  value  of  each  option  granted  was  estimated  on  the  date  of  grant  using  the  Black-Scholes  option-

pricing model with the following assumptions:

•

•

•

•

Expected term - The expected term of the option awards represents the period of time between the grant 
date  of  the  option  awards  and  the  date  the  option  awards  are  either  exercised,  converted  or  canceled, 
including an estimate for those option awards still outstanding. The Company used the simplified method, 
as permitted by the SEC for companies with a limited history of stock option exercise activity, to determine 
the expected term for its option grants.

Expected  volatility  -  The  expected  volatility  was  calculated  based  on  the  Company’s  historical  stock 
prices,  supplemented  as  necessary  with  historical  volatility  of  the  common  stock  of  several  peer 
companies with characteristics similar to those of the Company.

Risk-free interest rate - The risk-free interest rate was based on the U.S. Treasury yield curve in effect at 
the time of grant and with a maturity that approximated the Company’s expected term.

Dividend  yield  -  The  dividend  yield  was  based  on  the  Company’s  dividend  history  and  the  anticipated 
dividend payout over its expected term.

The  following  table  presents  the  weighted-average  grant  date  fair  value  of  options  granted  for  the  periods 

presented and the assumptions used to estimate those values using a Black-Scholes option pricing model.

Weighted average grant date fair value

Expected term (in years)

Expected volatility

Annual risk-free rate of return

Dividend yield

Years Ended December 31,

2022

2021

2020

**

**

**

**

**

**

**

**

**

**

$ 

38.45 

3.8

 86.4 %

 0.1 %

 — %

** 

No stock options were granted during the years ended December 31, 2022 and 2021

Restricted Stock Units

The fair value of the Company’s RSU awards granted is based upon the closing price of the Company’s stock 

price on the date of grant.

Enphase Energy, Inc. | 2022 Form 10-K | 114

 
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Performance Stock Units

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The  fair  value  of  the  Company’s  non-market  PSU  awards  granted  was  based  upon  the  closing  price  of  the 
Company’s  stock  price  on  the  date  of  grant.  The  fair  value  of  awards  of  the  Company’s  PSU  awards  containing 
market conditions was determined using a Monte Carlo simulation model based upon the terms of the conditions, 
the expected volatility of the underlying security, and other relevant factors.

Stock-based Compensation Expense

Stock-based  compensation  expense  for  all  stock-based  awards,  which  includes  stock  options,  RSUs  and 
PSUs,  expected  to  vest  is  measured  at  fair  value  on  the  date  of  grant  and  recognized  ratably  over  the  requisite 
service period. 

In  addition,  as  part  of  certain  business  acquisitions,  the  Company  is  obligated  to  issue  shares  of  common 
stock  of  the  Company  as  payment  subject  to  achievement  of  certain  targets.  For  such  payments,  the  Company 
records  stock-based  compensation  classified  as  post-combination  expense  recognized  ratably  over 
the 
measurement period presuming the targets will be met.

The following table summarizes the components of total stock-based compensation expense included in the 

consolidated statements of operations for the periods presented:

Cost of revenues
Research and development
Sales and marketing
General and administrative

Total

Income tax benefit included in the provision for income taxes

Years Ended December 31,

2022

2021

2020

(In thousands)

13,097  $ 
69,082 
78,819 
55,804 

7,366  $ 

33,927 
37,434 
35,559 

216,802  $ 
45,066  $ 

114,286  $ 
97,129  $ 

$ 

$ 
$ 

3,759 
12,701 
11,548 
14,495 
42,503 
61,389 

The following table summarizes the various types of stock-based compensation expense for the periods 

presented:

Stock options, RSUs and PSUs

Employee stock purchase plan
Post combination expense accrual (Accrued liabilities)

Total

Years Ended December 31,

2022

2021

2020

(In thousands)

$ 

200,295  $ 
5,475 
11,032 

$ 

216,802  $ 

110,142  $ 
4,144 
— 
114,286  $ 

39,841 
2,662 
— 
42,503 

As  of  December  31,  2022,  there  was  approximately  $371.3  million  of  total  unrecognized  stock-based 
compensation expense related to unvested equity awards, which are expected to be recognized over a weighted-
average period of 2.8 years.

Enphase Energy, Inc. | 2022 Form 10-K | 115

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Equity Awards Activity

Stock Options

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The following table summarizes stock option activity:

Outstanding at December 31, 2019

Granted

Exercised

Canceled

Outstanding at December 31, 2020

Granted

Exercised

Canceled

Outstanding at December 31, 2021

Granted

Exercised

Canceled

Outstanding at December 31, 2022
Vested and expected to vest at December 31, 2022

Exercisable at December 31, 2022

Number of
Shares
Outstanding
(In thousands)

Weighted-
Average
Exercise Price
per Share

Weighted-
Average
Remaining
Contractual
Term
(Years)

Aggregate
Intrinsic
Value (1)
(In thousands)

4,097  $ 

11 

(1,494)   

(82)   

2,532  $ 

— 

(267)   

(1)   

2,264  $ 

— 

(799)   

(1)   

1,464  $ 

1,464  $ 

1,464  $ 

2.18 

64.17 

2.74 

6.94 

1.96 

— 

2.44 

0.83 

1.90 

— 

2.02 

8.82 

1.83 

1.83 

1.83 

$ 

114,089 

$ 

42,091 

$ 

$ 

$ 

$ 

197,334 

385,125 

385,125 

385,125 

2.0

2.0

2.0

(1) 

The intrinsic value of options exercised is based upon the value of the Company’s stock at exercise. The intrinsic value of 
options outstanding, vested and expected to vest, and exercisable as of December 31, 2022 is based on the closing price 
of  the  last  trading  day  during  the  period  ended  December  31,  2022.  The  Company’s  stock  fair  value  used  in  this 
computation was $264.96 per share.

The following table summarizes information about stock options outstanding at December 31, 2022:

Range of Exercise Prices

$0.70 —– $1.11

$1.29 —– $1.29

$1.31 —– $5.53

$14.58 —– $14.58

$64.17 —– $64.17

Total

Options Outstanding

Options Exercisable

Number of
Shares
(In thousands)

Weighted-
Average
Remaining
Life
(Years)

Weighted-
Average
Exercise
Price

Number of
Shares
(In thousands)

Weighted-
Average
Exercise
Price

422 

935 

80 

20 

7 

1,464 

2.5

1.7

2.1

3.3

4.3

2.0

$ 

$ 

0.90 

1.29 

4.28 

14.58 

64.17 

1.83 

422  $ 

935 

80 

20 

7 

1,464  $ 

0.90 

1.29 

4.28 

14.58 

64.17 

1.83 

Enphase Energy, Inc. | 2022 Form 10-K | 116

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Restricted Stock Units

The following table summarizes RSU activity:

Outstanding at December 31, 2019

Granted

Vested

Canceled

Outstanding at December 31, 2020

Granted

Vested

Canceled

Outstanding at December 31, 2021

Granted

Vested

Canceled

Outstanding at December 31, 2022

Expected to vest at December 31, 2022

Number of
Shares
Outstanding
(In thousands)

Weighted-
Average
Fair Value
per Share at
Grant Date

Weighted-
Average
Remaining
Contractual
Term
(Years)

Aggregate
Intrinsic
Value (1)
(In thousands)

4,263  $ 

1,550 

(2,085)   

(140)   

3,588  $ 

1,301 

(1,979)   

(124)   

2,786  $ 

1,159 

(1,500)   

(192)   

2,253  $ 

2,253  $ 

7.19 

55.66 

7.26 

19.47 

27.61 

179.88 

20.47 

88.50 

100.73 

228.88 

72.87 

150.02 

181.01 

181.01 

$ 

125,578 

$ 

364,665 

$ 

$ 

$ 

321,274 

597,032 

596,995 

1.2

1.2

(1) 

The intrinsic value of RSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of 
RSUs  outstanding  and  expected  to  vest  as  of December  31,  2022  is  based  on  the  closing  price  of  the  last  trading  day 
during the period ended December 31, 2022. The Company’s stock fair value used in this computation was $264.96 per 
share.

Enphase Energy, Inc. | 2022 Form 10-K | 117

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Performance Stock Units

The following summarizes PSU activity:

Outstanding at December 31, 2019

Granted
Vested
Canceled

Outstanding at December 31, 2020

Granted
Vested
Canceled

Outstanding at December 31, 2021

Granted
Vested
Canceled

Outstanding at December 31, 2022

Expected to vest at December 31, 2022

Number of
Shares
Outstanding
(In thousands)

Weighted-
Average
Fair Value
per Share at
Grant Date

Weighted-
Average
Remaining
Contractual
Term
(Years)

Aggregate
Intrinsic
Value (1)
(In thousands)

955  $ 
989 
(1,450)   
— 

494  $ 
715 
(494)   
(270)   
445  $ 
413 
(303)   
(179)   
376  $ 

376  $ 

9.83 
31.12 
10.20 
— 
51.10 
131.60 
59.19 
52.75 
169.82 
195.29 
168.88 
171.32 
197.82 

197.82 

$ 

52,144 

$ 

91,803 

$ 

$ 

$ 

51,393 

99,726 

99,726 

0.2

0.2

(1) 

The intrinsic value of PSUs vested is based upon the value of the Company’s stock when vested. The intrinsic value of 
PSUs  outstanding  and  expected  to  vest  as  of  December  31,  2022  is  based  on  the  closing  price  of  the  last  trading  day 
during the period ended December 31, 2022. The Company’s stock fair value used in this computation was $264.96 per 
share.

Employee Stock Purchase Plan

A summary of ESPP activity for the years presented is as follows: (in thousands, except per share data):

Proceeds from common stock issued under ESPP

Shares of common stock issued

Weighted-average price per share

16.  INCOME TAXES

Years Ended December 31,

2022

2021

2020

$ 

$ 

9,570  $ 

6,832  $ 

90 

235 

106.32  $ 

29.12  $ 

4,304 

347 

12.41 

In  August  2022,  the  U.S.  enacted  the  Inflation  Reduction  Act  (the  “IRA”),  which  included  revisions  to  the 
Internal  Revenue  Code  of  1986,  as  amended  (the  “Code”).  The  IRA  introduced  a  15%  corporate  alternative 
minimum income tax (“CAMT”) for corporations whose average adjusted financial income for any consecutive three-
year  period  ending  after  December  31,  2021  that  exceeds  $1.0  billion.  Further,  the  IRA  also  extended  the 
investment tax credits for clean energy and expanded the incentives to clean energy manufacturing. The Company 
is  not  currently  subject  to  the  CAMT  based  on  the  current  operating  results  and  interpretations  of  the  IRA.  The 
conclusion  may  change  as  additional  implementation  guidance  from  the  U.S.  Department  of  Treasury  becomes 
available.

Enphase Energy, Inc. | 2022 Form 10-K | 118

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The domestic and foreign components of income before income taxes consisted of the following:

United States

Foreign

Income before income taxes

Years Ended December 31,
2021

2020

2022

(In thousands)

$ 

$ 

417,636  $ 

102,886  $ 

112,727 

34,412 

18,042 

6,683 

452,048  $ 

120,928  $ 

119,410 

The income taxes provision for (benefit from) the years presented is as follows:

Current:

Federal

State

Foreign

Deferred:

Federal

State

Foreign

Years Ended December 31,

2022

2021

2020

(In thousands)

$ 

34,499  $ 

—  $ 

9,719 

10,605 

54,823 

488 

6,232 

6,720 

— 

636 

1,896 

2,532 

(6,245)   

(28,398)   

(13,445) 

3,803 

2,305 

(4,380)   

(3,672) 

1,537 

— 

(137)   

(31,241)   

(17,117) 

Income taxes provision for (benefit from)

$ 

54,686  $ 

(24,521)  $ 

(14,585) 

A  reconciliation  of  the  income  taxes  provision  (benefit)  and  the  amount  computed  by  applying  the  statutory 

federal income tax rate of 21% to income before income taxes for the years presented is as follows:

Income tax provision (benefit) at statutory federal rate

$ 

94,926  $ 

27,681  $ 

25,076 

Years Ended December 31,

2022

2021

2020

(In thousands)

State taxes, net of federal benefit

Foreign tax rate and tax law differential

Tax credits

Stock-based compensation

Other permanent items

Other nondeductible/nontaxable items

Uncertain tax positions

Foreign-derived intangible income deduction

Section 162(m)
Convertible notes settlements

Warrant mark-to-mark adjustment

Income tax provision (benefit)

9,980 

4,905 

(19,864)   

(45,551)   

4,149 

(62)   

6,073 

(9,161)   

9,291 

— 

— 

489 

1,073 

(15,632)   

(80,950)   

178 

2,316 

6,911 

— 

25,812 

8,223 

(622)   

(3,098) 

611 

(5,835) 

(50,818) 

(253) 

1,525 

1,530 

— 

11,469 

— 

5,208 

$ 

54,686  $ 

(24,521)  $ 

(14,585) 

Enphase Energy, Inc. | 2022 Form 10-K | 119

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

A summary of significant components of the Company’s deferred tax assets and liabilities as of December 31, 

2022 and 2021 is as follows:

Deferred tax assets:

Allowances and reserves

Net operating loss and tax credit carryforwards

Stock-based compensation

Deferred revenue
Fixed assets, goodwill and intangibles (1)
Sec. 163(j) interest carryforward

Convertible notes and related hedges

Capitalized research and development expense

Other

Subtotal

Total deferred tax assets

Deferred tax liabilities:

Unremitted foreign earnings

Deferred cost of goods sold

Total deferred tax liabilities

Net deferred tax asset

December 31,

2022

2021

(In thousands)

$ 

40,166  $ 

26,748 

20,230 

40,120 

609 

— 

49,405 

47,870 

11,099 

236,247 

236,247 

18,764 

65,699 

12,935 

27,778 

7,906 

10,749 

— 

— 

1,609 

145,440 

145,440 

(3,755)   

(32,449)   

(36,204)   

(2,226) 

(23,713) 

(25,939) 

$ 

200,043  $ 

119,501 

(1) 

The fixed assets, goodwill and intangibles amount for the year ended December 31, 2021 is presented net of deferred tax 
liabilities related to goodwill.

The Company's accounting for deferred taxes involves the evaluation of a number of factors concerning the 
realizability  of  the  Company's  deferred  tax  assets. Assessing  the  realizability  of  deferred  tax  assets  is  dependent 
upon  several  factors,  including  the  likelihood  and  amount,  if  any,  of  future  taxable  income  in  relevant  jurisdictions 
during the periods in which those temporary differences become deductible. The Company's management forecasts 
taxable income by considering all available positive and negative evidence including its history of operating income 
or losses and its financial plans and estimates that are used to manage the business. These assumptions require 
significant  judgment  about  future  taxable  income.  The  amount  of  deferred  tax  assets  considered  realizable  is 
subject to adjustment in future periods if estimates of future taxable income are reduced.

The  Company  has  California  net  operating  loss  carryforwards  of  approximately  $10.4  million,  as  of 

December 31, 2022. The state net operating loss carryforwards, if not utilized, will expire beginning in 2041.

The  Company  has  approximately  $7.0  million  of  federal  research  credit  and  $18.0  million  of  state  research 
credit  carryforwards.  The  federal  credits  begin  to  expire  in  2031  and  the  state  credits  can  be  carried  forward 
indefinitely.

Utilization  of  some  of  the  federal  credit  carryforwards  and  state  net  operating  loss  and  credit  carryforwards 
are  subject  to  annual  limitations  due  to  the  “change  in  ownership”  provisions  of  the  Code  and  similar  state 
provisions. The Company believes that no such change has occurred through December 31, 2022.

The accounting for uncertain tax positions prescribes a recognition threshold and measurement attribute for 
the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. 
The  Company  is  required  to  recognize  in  the  financial  statements  the  impact  of  a  tax  position,  if  that  position  is 
more-likely  than-not  of  being  sustained  on  audit,  based  on  the  technical  merits  of  the  position.  The  Company 
recorded a net charge for unrecognized tax benefits in 2022 of $0.9 million.

Enphase Energy, Inc. | 2022 Form 10-K | 120

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The Company does not have any tax positions for which it is reasonably possible the total amount of gross 
unrecognized tax benefits will increase or decrease over the next year. The unrecognized tax benefits may increase 
or change during the next year for items that arise in the ordinary course of business.

A tabular reconciliation of the total amounts of unrecognized tax benefits for the years presented is as follows 

(in thousands):

Years Ended December 31,

2022

2021

2020

Unrecognized tax benefits—at beginning of year

$ 

20,904  $ 

8,421  $ 

6,589 

Increases (decreases) in balances related to tax positions taken in prior 
years

Increases in balances related to tax positions taken in current year
Settlements

Lapses in statutes of limitations

Unrecognized tax benefits—at end of year

(4,786)   

6,562 

(657)   

(255)   

4,391 

8,301 
— 

(209)   

$ 

21,768  $ 

20,904  $ 

— 

2,006 
— 

(174) 

8,421 

The  Company  includes  interest  and  penalties  related  to  unrecognized  tax  benefits  within  the  income  tax 
provision  for  (benefit  from).  In  the  years  ended  December  31,  2022,  2021  and  2020,  the  total  amount  of  gross 
interest and penalties accrued in each year was immaterial. Both the unrecognized tax benefits and the associated 
interest and penalties that are not expected to result in payment or receipt of cash within one year are classified as 
other  non-current  liabilities  in  the  consolidated  balance  sheets.  In  connection  with  tax  matters,  the  Company’s 
interest and penalty expense recognized in 2022, 2021 and 2020 in the consolidated statements of operations was 
immaterial.

The Company’s  tax returns  continue to  remain  effectively subject to examination by U.S. federal authorities 
for the years 2006 through 2022 and by California state authorities for the years 2006 through 2022 due to use and 
carryovers of net operating losses and tax credits.

17.  CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS

The Company is potentially subject to financial instrument concentration of credit risk through its cash, cash 
equivalents, marketable securities, and accounts  receivable. The Company places its cash, cash equivalents and 
marketable securities with high quality institutions and performs periodic evaluations of their relative credit standing.

Accounts receivable can be potentially exposed to a concentration of credit risk with its major customers. As 
of  December  31,  2022  and  2021,  amounts  due  from  one  customer  represented  approximately  24%  and  38%, 
respectively, of the total accounts receivable balance.

In  the  years  ended  December  31,  2022,  2021  and  2020,  one  customer  accounted  for  approximately  37%, 

34% and 29%, respectively, of total net revenues. 

18.  NET INCOME PER SHARE

Basic net income per share is computed by dividing net income by the weighted average number of shares of 
common stock outstanding during the period. Diluted net income per share is computed in a similar manner, but it 
also includes the effect of potential common shares outstanding during the period, when dilutive. Potential common 
shares  include  stock  options,  RSUs,  PSUs,  ESPP,  the  Notes  due  2023,  1.0%  convertible  senior  notes  due  2024 
(the “Notes due 2024”), Notes due 2025, Notes due 2026, Notes due 2028, and warrant transactions in connection 
with  the  offering  of  the  Notes  due  2024  (the  “2024  Warrants”),  2025  Warrants,  2026  Warrants  and  the  2028 
Warrants. Refer to Note 12. “Debt,” for additional information about the Company’s outstanding notes.

Enphase Energy, Inc. | 2022 Form 10-K | 121

 
 
 
 
 
 
 
 
Table of Contents

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The following table presents the computation of basic and diluted net income per share for the periods 

presented:

Numerator:

Net income

Convertible senior notes interest and financing costs, net

Adjusted net income

Denominator:

Shares used in basic per share amounts:

Years Ended December 31,

2022

2021

2020

(In thousands, except per share data)

$ 

$ 

397,362  $ 

145,449  $ 

133,995 

2,629 

177 

177 

399,991  $ 

145,626  $ 

134,172 

Weighted average common shares outstanding

135,349 

134,025 

125,561 

Shares used in diluted per share amounts:

Weighted average common shares outstanding

135,349 

134,025 

125,561 

Effect of dilutive securities:

Employee stock-based awards

Notes due 2023

Notes due 2024
2024 Warrants

Notes due 2025
2025 Warrants
Notes due 2026
Notes due 2028

3,407 

900 

— 
— 

— 
659 
2,057 
2,018 

4,918 

900 

768 
647 

929 
691 
— 
— 

6,997 

900 

4,449 
4,011 

— 
— 
— 
— 

Weighted average common shares outstanding for diluted calculation

144,390 

142,878 

141,918 

Basic and diluted net income per share

Net income per share, basic

Net income per share, diluted

$ 

$ 

2.94  $ 

2.77  $ 

1.09  $ 

1.02  $ 

1.07 

0.95 

Diluted earnings per share for the year ended December 31, 2022 includes the dilutive effect of stock options, 
RSUs, PSUs, ESPP, the Notes due 2023, the 2025 Warrants, the Notes due 2026 and the Notes due 2028. Certain 
common stock issuable under stock options, RSUs, PSUs, the Notes due 2025, the 2026 Warrants, and the 2028 
Warrants have been omitted from the diluted net income per share calculation because including such shares would 
have been antidilutive.

For the year ended December 31, 2022, due to adoption of ASU 2020-06 on January 1, 2022, the Company 
is no longer utilizing the treasury stock method  for earnings per share impact for the  Notes due  2025, Notes due 
2026 and Notes due 2028. Instead, the Company is applying the if-converted method when reporting the number of 
potentially dilutive shares of common stock as the Company may at its election, settle its Convertible Senior Notes 
through payment or delivery, as the case may be, in cash, shares of its common stock or a combination of cash and 
shares of its common stock. Under this method, diluted earnings per share is determined by assuming that all of the 
Convertible  Senior  Notes  were  converted  into  shares  of  the  Company’s  common  stock  at  the  beginning  of  the 
reporting period.

Further, the Company under the relevant sections of the indentures, irrevocably may elect to settle principal in 
cash and any excess in cash or shares of the Company’s common stock for its Notes due 2025, Notes due 2026 
and Notes due 2028. If and when the Company makes such election, there will be no adjustment to the net income 

Enphase Energy, Inc. | 2022 Form 10-K | 122

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

and the Company will use the average share price for the period to determine the potential number of shares to be 
issued based upon assumed conversion to be included in the diluted share count.

Diluted earnings per share for the year ended December 31, 2021 includes the dilutive effect of stock options, 
RSUs,  PSUs,  ESPP,  the  Notes  due  2023,  the  Notes  due  2024,  the  2024  Warrants,  the  Notes  due  2025  and  the 
2025 Warrants. Certain common stock issuable under stock options, RSUs, PSUs, the Notes due 2026, the 2026 
Warrants,  the  Notes  due  2028  and  the  2028  Warrants  have  been  omitted  from  the  diluted  net  income  per  share 
calculation because including such shares would have been antidilutive.

Diluted earnings per share for the year ended December 31, 2020 includes the dilutive effect of stock options, 
RSUs,  PSUs,  ESPP,  the  Notes  due  2023,  the  Notes  due  2024,  and  the  2024  Warrants.  Certain  common  stock 
issuable  under  stock  options,  RSUs,  PSUs,  Notes  due  2025  and  the  2025  Warrants  have  been  omitted  from  the 
diluted net income per share calculation because including such shares would have been antidilutive.

The  following  outstanding  shares  of  common  stock  equivalents  were  excluded  from  the  calculation  of  the 

diluted net income per share attributable to common stockholders because their effect would have been antidilutive:

Employee stock-based awards

Notes due 2025

2025 Warrants
Notes due 2028
2028 Warrants
Notes due 2026
2026 Warrants

Total

Years Ended December 31,

2022

2021

2020

(In thousands)

135 

1,253 

— 
— 
1,547 
— 
1,577 

4,512 

32 

— 

— 
1,082 
2,184 
1,328 
2,225 

6,851 

43 

197 

1,254 
— 
— 
— 
— 

1,494 

19.  SEGMENT AND GEOGRAPHIC INFORMATION

The  Company’s  chief  operating  decision  maker  is  the  Chief  Executive  Officer.  The  Chief  Executive  Officer 
reviews  financial  information  presented  on  a  consolidated  basis.  The  Company  has  one  business  activity,  which 
entails the design, development, manufacture and sale of solutions for the solar PV industry. There are no segment 
managers who are held accountable for operations, operating results or plans for levels or components below the 
consolidated  unit  level. Accordingly,  management  has  determined  that  the  Company  has  a  single  operating  and 
reportable segment.

See  Note  3.  “Revenue  Recognition,”  for  the  table  presenting  net  revenues  (based  on  the  destination  of 

shipments). The following table presents long-lived assets by geographic region as of the periods presented:

Long-Lived Assets

United States
India
China
Mexico
New Zealand

Romania

Other

Total

$ 

December 31,

2022

2021

(In thousands)

54,406  $ 
19,950 
9,228 
9,929 
6,059 

8,355 

3,440 

37,685 
17,490 
12,906 
8,735 
4,622 

— 

729 

$ 

111,367  $ 

82,167 

Enphase Energy, Inc. | 2022 Form 10-K | 123

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

20.  RELATED PARTY

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In 2018, a member of the Company’s board of directors and one of its principal stockholders, Thurman John 
Rodgers,  purchased  $5.0  million  aggregate  principal  amount  of  the  Notes  due  2023  in  a  concurrent  private 
placement. As of both December 31, 2022 and December 31, 2021, $5.0 million aggregate principal amount of the 
Notes due 2023 were outstanding. Refer to Note 12. “Debt,” for additional information related to this purchase.

Enphase Energy, Inc. | 2022 Form 10-K | 124

Table of Contents

Item 9.  Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A.  Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We carried out an evaluation required by the Exchange Act, under the supervision and with the participation of 
our principal executive officer and principal financial officer, of the effectiveness of the design and operation of our 
disclosure controls and procedures, as defined in Rule 13a-15(e) of the Exchange Act, as of the end of the period 
covered  by  this  report.  Based  on  this  evaluation,  our  principal  executive  officer  and  principal  financial  officer 
concluded  that  our  disclosure  controls  and  procedures  were  effective  to  provide  reasonable  assurance  that 
information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, 
processed, summarized and reported within the time periods specified in the SEC’s rules and forms and to provide 
reasonable assurance that such information is accumulated and communicated to our management, including our 
principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required 
disclosures.

Management’s Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting 
in  providing  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial 
statements for external purposes in accordance with generally accepted accounting principles, as defined in Rule 
13a-15(f)  of  the  Exchange Act.  Management  has  assessed  the  effectiveness  of  our  internal  control  over  financial 
reporting  based  on  criteria  set  forth  in  Internal  Control  –  Integrated  Framework  issued  by  the  Committee  of 
Sponsoring  Organizations  of  the  Treadway  Commission  (2013).  As  a  result  of  this  assessment,  management 
concluded  that,  as  of  December  31,  2022,  our  internal  control  over  financial  reporting  was  effective.  Our 
independent  registered  public  accounting  firm,  Deloitte  &  Touche  LLP,  has  issued  an  audit  report  on  our  internal 
control over financial reporting, which appears in Part II, Item 8 of this Annual Report on Form 10-K.

Changes in Internal Control over Financial Reporting

There  were  no  changes  in  our  internal  control  over  financial  reporting  that  occurred  during  the  most  recent 
year  ended  December  31,  2022  that  materially  affected,  or  are  reasonably  likely  to  materially  affect,  our  internal 
control over financial reporting. 

Limitations on Controls

Our disclosure controls and procedures and internal control over financial reporting are designed to provide 
reasonable assurance of achieving their objectives as specified above. Management does not expect, however, that 
our disclosure controls and procedures or our internal control over financial reporting will prevent or detect all errors 
and fraud. Any control system, no matter how well designed and operated, is based upon certain assumptions and 
can  provide  only  reasonable,  not  absolute,  assurance  that  its  objectives  will  be  met.  Further,  no  evaluation  of 
controls  can  provide  absolute  assurance  that  misstatements  due  to  error  or  fraud  will  not  occur  or  that  all  control 
issues and instances of fraud, if any, have been detected by us.

Item 9B.  Other Information

None.

Item 9C.  Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

Enphase Energy, Inc. | 2022 Form 10-K | 125

Table of Contents

PART III

Item 10.  Directors, Executive Officers and Corporate Governance

The information required regarding our directors is incorporated by reference from the information contained 
in  the  section  entitled  “Election  of  Directors”  in  our  definitive  Proxy  Statement  for  the  2023  Annual  Meeting  of 
Stockholders (our “Proxy Statement”), a copy of which will be filed with the SEC on or before April 30, 2023.

The  information  required  regarding  our  executive  officers  is  incorporated  by  reference  from  the  information 

contained in the section entitled “Management” in our Proxy Statement.

The  information  required  regarding  Section  16(a)  beneficial  ownership  reporting  compliance  is  incorporated 
by reference from the information contained in the section entitled “Delinquent Section 16(a) Reports” in our Proxy 
Statement.

The information required with respect to procedures by which security holders may recommend nominees to 
our  board  of  directors,  and  the  composition  of  our  Audit  Committee,  and  whether  we  have  an  “audit  committee 
financial  expert,”  is  incorporated  by  reference  from  the  information  contained  in  the  section  entitled  “Information 
Regarding the Board of Directors and Corporate Governance” in our Proxy Statement.

Code of Conduct

We  have  a  written  code  of  conduct  that  applies  to  all  our  executive  officers,  directors  and  employees.  Our 
Code  of  Conduct  is  available  on  our  website  at  http://investor.enphase.com/corporate-governance. A  copy  of  our 
Code  of  Conduct  may  also  be  obtained  free  of  charge  by  writing  to  our  Secretary,  Enphase  Energy,  Inc.,  47281 
Bayside Parkway, Fremont, CA 94538. If we make any substantive amendments to our Code of Conduct or grant 
any  waiver  from  a  provision  of  the  Code  of  Conduct  to  any  executive  officer  or  director,  we  intend  to  promptly 
disclose the nature of the amendment or waiver on our website.

Item 11.  Executive Compensation

The information required regarding the compensation of our directors and executive officers is incorporated by 
reference 
the  sections  entitled  “Executive  Compensation,”  “Director 
Compensation,”  “Compensation  Committee  Interlocks  and  Insider  Participation”  and  “Compensation  Committee 
Report” in our Proxy Statement.

information  contained 

from 

the 

in 

Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder 

Matters

The information required regarding security ownership of our 5% or greater stockholders and of our directors 
and executive officers is incorporated by reference from the information contained in the section entitled “Security 
Ownership of Certain Beneficial Owners and Management” in our Proxy Statement.

Equity Compensation Plan Information

The information required regarding securities authorized for issuance under our equity compensation plans is 
incorporated  by  reference  from  the  information  contained  in  the  section  entitled  “Equity  Compensation  Plan 
Information” in our Proxy Statement.

Item 13.  Certain Relationships and Related Transactions, and Director Independence

The  information  required  regarding  related  transactions  is  incorporated  herein  by  reference  from  the 
information  contained  in  the  section  entitled  “Transactions  With  Related  Persons”  and,  with  respect  to  director 
independence, the section entitled “Election of Directors” in our Proxy Statement.

Item 14.  Principal Accountant Fees and Services

The information required is incorporated by reference from the information contained in the sections entitled 
“Principal  Accountant  Fees  and  Services”  and  “Pre-Approval  Policies  and  Procedures”  in  the  Proposal  entitled 
“Ratification of Selection of Independent Registered Public Accounting Firm” in our Proxy Statement.

Enphase Energy, Inc. | 2022 Form 10-K | 126

Table of Contents

Item 15.  Exhibits and Financial Statement Schedules

Consolidated Financial Statements

PART IV

The  information  concerning  our  consolidated  financial  statements,  and  Report  of  Independent  Registered 
Public Accounting Firm required by this Item is incorporated by reference herein to the section of this Annual Report 
on Form 10-K in Part II, Item 8, Consolidated Financial Statements and Supplementary Data.

No  schedules  are  provided  because  they  are  not  applicable,  not  required  under  the  instructions,  or  the 

requested information is shown in the financial statements or related notes thereto.

Exhibits

The  exhibits  listed  below  are  filed  as  part  of  this  Annual  Report  on  Form  10-K  or  incorporated  herein  by 

reference, in each case as indicated below.

Exhibit 
Number

Exhibit Description

Form

SEC File No.

Exhibit

Filing Date

Filed 
Herewith

Incorporation by Reference

3.1

3.2

3.3

3.4

3.5

3.6

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

4.11

Amended and Restated Certificate of Incorporation 
of Enphase Energy, Inc.

Certificate of Amendment of the Amended and 
Restated Certificate of Incorporation of Enphase 
Energy, Inc.

Certificate of Amendment of the Amended and 
Restated Certificate of Incorporation of Enphase 
Energy, Inc.

Certificate of Amendment of the Amended and 
Restated Certificate of Incorporation of Enphase 
Energy, Inc.

Certificate of Amendment of the Amended and 
Restated Certificate of Incorporation of Enphase 
Energy, Inc.

Amended and Restated Bylaws of Enphase 
Energy, Inc.

Specimen Common Stock Certificate of Enphase 
Energy, Inc.

Indenture, dated August 17, 2018, between 
Enphase Energy, Inc. and U.S. Bank National 
Association.

Form of 4.00% Convertible Senior Note due 2023 
(included in Exhibit 4.2).

Indenture, dated June 5, 2019, between Enphase 
Energy, Inc. and U.S. Bank National Association.

Indenture, dated March 9, 2020, between Enphase 
Energy, Inc. and U.S. Bank National Association.

Form of 0.25% Convertible Senior Note due 2025 
(included in Exhibit 4.5).

Indenture, dated March 1, 2021, between Enphase 
Energy, Inc. and U.S. Bank National Association.

Indenture, dated March 1, 2021, between Enphase 
Energy, Inc. and U.S. Bank National Association.

Form of 0% Convertible Senior Note due 2026 
(included in Exhibit 4.7).

Form of 0% Convertible Senior Note due 2028 
(included in Exhibit 4.8).

Description of Registrant’s Securities Registered 
Pursuant to Section 12 of the Securities Exchange 
Act of 1934, as amended.

8-K

001-35480

3.1

4/6/2012

10-Q

001-35480

3.1

8/9/2017

10-Q

001-35480

2.1

8/6/2018

8-K

001-35480

3.1

5/27/2020

S-8

8-K

333-181382

001-35480

S-1/A

333-174925

8-K

8-K

8-K

8-K

8-K

8-K

8-K

8-K

8-K

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

4.5

3.5

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.2

4.1

4.2

5/19/2021

4/8/2022

3/12/2012

8/17/2018

8/17/2018

6/5/2019

3/9/2020

3/9/2020

3/1/2021

3/1/2021

3/1/2021

3/1/2021

10-K

001-35480

4.11

2/11/2022

Enphase Energy, Inc. | 2022 Form 10-K | 127

Table of Contents

10.1+

10.2+

10.3+

10.4+

10.5†

10.6

10.7†

10.8#

10.9

10.10+

10.11+

10.12+

10.13

10.14+

10.15

10.16+

10.17

10.18†

10.19†

10.20#

10.21#

10.22

10.23#

10.24

Form of Indemnification Agreement by and between 
Enphase Energy, Inc. and each of its directors and 
officers.

2021 Equity Incentive Plan and forms of agreement 
thereunder.

2011 Equity Incentive Plan, as amended, and forms 
of agreement thereunder.

S-1/A

333-174925

10.1

8/24/2011

S-8

333-181382

99.1

5/19/2021

DEF 14A

001-35480

Appendix A

3/18/2016

2011 Employee Stock Purchase Plan, as amended.

DEF 14A

001-35480

Appendix A

3/31/2017

Flextronics Logistics Services Agreement by and 
between Enphase Energy, Inc. and Flextronics 
America, LLC, dated May 1, 2009.

Amendment #1 to the Flextronics Logistics 
Services Agreement, by and between Enphase 
Energy, Inc. and Flextronics America, LLC, dated 
July 28, 2016.

Flextronics Manufacturing Services Agreement by 
and between Enphase Energy, Inc. and Flextronics 
Industrial, Ltd., dated March 1, 2009, as amended.

Amendment to Flextronics Manufacturing Services 
Agreement by and between Enphase Energy, Inc. 
and Flextronics Industrial, Ltd., dated August 22, 
2018.

Amendment No. 2 to Flextronics Manufacturing 
Services Agreement by and between Enphase 
Energy, Inc. and Flextronics Industrial, Ltd., dated 
March 30, 2022.

Non-employee Director Compensation Policy.

Offer Letter by and between Enphase Energy, Inc. 
and David Ranhoff, dated December 1, 2017.

Severance and Change in Control Benefit Plan.

Securities Purchase Agreement, by and among 
Enphase Energy, Inc. and the purchasers identified 
on Exhibit A thereto, dated January 9, 2017.

Offer Letter by and between Enphase Energy, Inc. 
and Eric Branderiz, dated December 1, 2018.

Securities Purchase Agreement, dated August 14, 
2018, by and between Enphase Energy, Inc. and 
the Rodgers Massey Revocable Trust dtd 4/4/11.

Performance Bonus Program Summary.

Stockholders Agreement, dated as of August 9, 
2018, by and between Enphase Energy, Inc. and 
SunPower Corporation.

Master Supply Agreement, dated August 9, 2018, 
between Enphase Energy, Inc. and SunPower 
Corporation.

Amendment No. 1 to Master Supply Agreement, 
dated December 10, 2018, by and between 
Enphase Energy, Inc. and SunPower Corporation.

Amendment No. 2 to Master Supply Agreement, 
dated June 12, 2018, by and between Enphase 
Energy, Inc. and SunPower Corporation.

Amendment No. 3 to Master Supply Agreement, 
dated June 12, 2018, by and between Enphase 
Energy, Inc. and SunPower Corporation.

Amendment No. 4 to Master Supply Agreement, 
dated January 4, 2021, by and between Enphase 
Energy, Inc. and SunPower Corporation.

Amendment No. 5 to Master Supply Agreement, 
dated July 6, 2022, by and between Enphase 
Energy, Inc. and SunPower Corporation.

Amendment No. 6 to Master Supply Agreement, 
dated July 27, 2022, by and between Enphase 
Energy, Inc. and SunPower Corporation.

S-1

333-174925

10.17

6/15/2011

10-Q

001-35480

10.4

11/2/2016

S-1

333-174925

10.18

6/15/2011

10-Q

001-35480

10.3

4/26/2022

10-K

8-K

10-Q

8-K

001-35480

10.11

2/16/2021

001-35480

001-35480

10.1

10.5

12/5/2017

5/8/2013

001-35480

10.1

1/10/2017

10-Q

001-35480

10.1

8/6/2018

8-K

8-K

001-35480

10.2

8/17/2018

001-35480

10.1

2/6/2019

SC 13D

005-86790

SC 13D

8/20/2018

8-K/A

001-35480

99.1

10/23/2018

10-K

001-34166

10.74

2/14/2019

10-K

001-35480

10.21

2/16/2021

10-K

001-35480

10.22

2/16/2021

10-Q

001-35480

10.1

7/26/2022

10-Q

001-35480

10.2

7/26/2022

X

X

Enphase Energy, Inc. | 2022 Form 10-K | 128

Table of Contents

10.25

10.26#

10.27

10.28

10.29

10.30

Consent and Waiver to Stockholders Agreement 
dated October 15, 2020, by and between Enphase 
Energy, Inc., SunPower Corporation, SunPower 
Equity Holdings, LLC and Total SE.

Salcomp Manufacturing Services Agreement by 
and between Enphase Energy, Inc. and Salcomp 
Manufacturing India Private Ltd., dated October 1, 
2019.

Bayside Parkway Lease by and between Enphase 
Energy, Inc. and Dollinger Bayside Associates, 
dated April 12, 2018.

Bayside Parkway Lease by and between Enphase 
Energy, Inc. and Dollinger Bayside Associates, 
amendment dated March 17, 2020.

Bayside Parkway Lease by and between Enphase 
Energy, Inc. and Dollinger Bayside Associates, 
amendment dated May 9, 2020.

Form of Convertible Note Hedge Transaction 
Confirmation (2020).

10.31

Form of Warrant Confirmation (2020).

10.32

Form of Convertible Note Hedge Transaction 
Confirmation (2021).

10.33

Form of Warrant Confirmation (2021).

10.34

Additional Call Option Transaction Confirmation 
(2021).

10.35

Additional Warrant Confirmations (2021).

10.36

Purchase Agreement, dated March 4, 2020 by and 
among the Registrant and Barclays Capital Inc.

10.37

Form of Exchange Agreement for the 2025 Notes.

10.38

10.39

10.40

10.41

10.42

Partial Unwind Agreements for Base Call Option 
Confirmations dated May 30, 2019 and Additional 
Call Option Confirmations dated June 4, 2019, 
made as of February 24, 2021, between Enphase 
Energy, Inc. and Barclays Capital Inc. and between 
Enphase Energy, Inc. and Credit Suisse Capital 
LLC.

Partial Unwind Agreements for Base Warrants 
Confirmations dated May 30, 2019 and Additional 
Warrants Confirmations dated June 4, 2019, made 
as of February 24, 2021, between Enphase Energy, 
Inc. and Barclays Capital Inc. and between 
Enphase Energy, Inc. and Credit Suisse Capital 
LLC.

Partial Unwind Agreements for Base Call Option 
Confirmations dated March 4, 2020, made as of 
February 24, 2021, between Enphase Energy, Inc. 
and Barclays Capital Inc., between Enphase 
Energy, Inc. and Credit Suisse Capital LLC, and 
between Enphase Energy, Inc. and Goldman Sachs 
& Co. LLC.

Partial Unwind Agreements for Base Warrants 
Confirmations dated March 4, 2020, made as of 
February 24, 2021, between Enphase Energy, Inc. 
and Barclays Capital Inc., between Enphase 
Energy, Inc. and Credit Suisse Capital LLC, and 
between Enphase Energy, Inc. and Goldman Sachs 
& Co. LLC.

Partial Unwind Agreement for Base Call Option 
Confirmations dated May 30, 2019 and Additional 
Warrants Confirmation dated June 4, 2019, made 
as of March 4, 2021, between Enphase Energy, 
Inc. and Barclays Bank PLC.

10-K

001-35480

10.23

2/16/2021

10-K

001-35480

10.24

2/16/2021

10-K

001-35480

10.45

3/15/2019

10-K

001-35480

10.26

2/16/2021

10-K

001-35480

10.27

2/16/2021

8-K

8-K

8-K

8-K

8-K

8-K

8-K

8-K

001-35480

001-35480

001-35480

10.2

10.3

10.2

3/9/2020

3/9/2020

3/1/2021

001-35480

10.3

3/1/2021

001-35480

10.1

3/15/2021

001-35480

10.2

3/15/2021

001-35480

001-35480

10.1

10.5

3/9/2020

3/1/2021

8-K

001-35480

10.6

3/1/2021

8-K

001-35480

10.7

3/1/2021

8-K

001-35480

10.8

3/1/2021

8-K

001-35480

10.9

3/1/2021

8-K

001-35480

10.1

3/8/2021

Enphase Energy, Inc. | 2022 Form 10-K | 129

Table of Contents

10.43+

10.44+

10.45+

21.1

23.1

24.1

31.1

31.2

32.1*

Offer Letter, dated January 16, 2018, and 2019 
Merit Focal Review, dated May 10, 2019, to Jeffery 
McNeil.

Offer Letter, by and between Enphase Energy, Inc. 
and Mandy Yang, dated February 14, 2022.

Separation Letter, by and between Enphase 
Energy, Inc. and Eric Branderiz, dated February 14, 
2022.

List of Subsidiaries of the Registrant.

Consent of Deloitte & Touche LLP, Independent 
Registered Public Accounting Firm.

Power of Attorney (incorporated by reference to the 
signature page of this Annual Report on Form 10-
K).

Certification of Chief Executive Officer pursuant to 
Rule 13a-14(a)/15d-14(a).

Certification of Chief Financial Officer pursuant to 
Rule 13a-14(a)/15d-14(a).

Certification of Chief Executive Officer and Chief 
Financial Officer pursuant to 18 U.S.C. Section 
1350 as Adopted Pursuant to Section 906 of the 
Sarbanes-Oxley Act of 2002, as amended.

101.INS

XBRL Instance Document.

101.SCH

XBRL Taxonomy Extension Schema Document.

101.CAL

101.DEF

101.LAB

101.PRE

XBRL Taxonomy Extension Calculation Linkbase 
Document.

XBRL Taxonomy Extension Definition Linkbase 
Document.

XBRL Taxonomy Extension Label Linkbase 
Document.

XBRL Taxonomy Extension Presentation 
Document.

104

Cover Page Interactive Data File (formatted as 
Inline XBRL and contained in Exhibits 101).

10-Q

001-35480

10.4

7/30/2019

10-Q

001-35480

10.1

4/26/2022

10-Q

001-35480

10.2

4/26/2022

X

X

X

X

X

X

X

X

X

X

X

X

X

+  Management compensatory plan or arrangement.

†  Confidential treatment has been granted for certain portions of this exhibit. Omitted information has been filed 

separately with the Securities and Exchange Commission.

#  Certain portions of this exhibit have been omitted pursuant to Item 601 of Regulation S-K.

*  The certifications attached as Exhibit 32.1 accompany this Annual Report on Form 10-K pursuant to 18 U.S.C. 
Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act, and shall not be deemed “filed” 
by Enphase Energy, Inc. for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor 
shall they be deemed incorporated by reference in any filing under the Securities Act, except as shall be 
expressly set forth by specific reference in such filing.

Enphase Energy, Inc. | 2022 Form 10-K | 130

Table of Contents

Item 16.  Form 10-K Summary

Not Applicable

Enphase Energy, Inc. | 2022 Form 10-K | 131

Table of Contents

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has 

duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized on February 10, 
2023.

SIGNATURES

Enphase Energy, Inc.

By:

/s/ BADRINARAYANAN KOTHANDARAMAN
Badrinarayanan Kothandaraman

President and Chief Executive Officer

Enphase Energy, Inc. | 2022 Form 10-K | 132

Table of Contents

POWER OF ATTORNEY

KNOW  ALL  PERSONS  BY  THESE  PRESENTS,  that  each  person  whose  signature  appears  below 
constitutes and appoints Badrinarayanan Kothandaraman and Mandy Yang, jointly and severally, as his or her true 
and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or 
her name, place and stead, in any and all capacities, to sign any and all amendments to this Annual Report on Form 
10-K and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities 
and  Exchange  Commission,  granting  unto  said  attorneys-in-fact  and  agents  full  power  and  authority  to  do  and 
perform each and every act and thing requisite or necessary to be done in and about the premises hereby ratifying 
and confirming all that said attorneys-in-fact and agents, or his or her substitute or substitutes, may lawfully do or 
cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by 

the following persons on behalf of the registrant and in the capacities on the dates indicated.

Signature

Title

Date

/s/ BADRINARAYANAN KOTHANDARAMAN

Badrinarayanan Kothandaraman

/s/ MANDY YANG

Mandy Yang

/s/ STEVEN J. GOMO

Steven J. Gomo

/s/ JAMIE HAENGGI
Jamie Haenggi

/s/ BENJAMIN KORTLANG

Benjamin Kortlang

/s/ JOESEPH MALCHOW

Joseph Malchow

/s/ RICHARD MORA

Richard Mora

/s/ THURMAN JOHN RODGERS

Thurman John Rodgers

President and Chief Executive Officer
(Principal Executive Officer)

Chief Financial Officer
(Principal Financial Officer and Principal 
Accounting Officer)

Director

Director

Director

Director

Director

Director

February 10, 2023

February 10, 2023

February 10, 2023

February 10, 2023

February 10, 2023

February 10, 2023

February 10, 2023

February 10, 2023

Enphase Energy, Inc. | 2022 Form 10-K | 133