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Enphase Energy

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FY2021 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, 2021

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. ☒

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,  2021,  based  upon  the  closing  price  of  $183.63  of  the
registrant’s common stock as reported on the Nasdaq Global Market, was approximately $19.4 billion.

As of February 7, 2022, there were 133,935,574 shares of the registrant’s common stock outstanding.

Portions of the registrant’s Proxy Statement for the 2022 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, 2021 are incorporated by reference into Part III of this Annual Report on Form 10-K.

DOCUMENTS INCORPORATED BY REFERENCE

Enphase Energy, Inc.

Table of Contents

PART I

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

Item 5.
Item 6.
Item 7.
Item 7A.
Item 8.
Item 9.
Item 9A.
Item 9B.
Item 9C.

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

Item 15.
Item 16.

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

PART II

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
Quantitative and Qualitative Disclosures About Market Risk
Financial Statements and Supplementary Data
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information
Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

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

PART IV

Exhibits and Financial Statement Schedules
Form 10-K Summary
Signatures

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Forward-Looking Statements

This  Annual  Report  on  Form  10-K  contains  “forward-looking  statements”  as  defined  under  securities  laws.  Forward-looking  statements
include  statements  that  are  not  historical  facts  and  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 Item 1, Business; Item 1A, Risk Factors; 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.  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 Item 1A, Risk Factors, 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.

In this report, 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.

Risk Factors Summary

Below is a summary of material factors that make an investment in our securities speculative or risky. Importantly, this summary does not address
all of the risks and uncertainties that we face. Additional discussion of the risks and uncertainties summarized in this risk factor summary, as well
as other risks and uncertainties that we face, can be found under “Risk Factors” in Part I, Item 1A of this Annual Report on Form 10‑K. The below
summary is qualified in its entirety by that more complete discussion of such risks and uncertainties. You should consider carefully the risks and
uncertainties described under “Risk Factors” in Part I, Item 1A of this Annual Report on Form 10‑K as part of your evaluation of an investment in
our securities:

•

•

•

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.

If  demand  for  solar  energy  solutions  does  not  grow  or  grows  at  a  slower  rate  than  we  anticipate,  including  as  a  result  of  the  ongoing
COVID-19 pandemic, our business will suffer.

The rapidly changing solar industry makes it difficult to evaluate our current business and future prospects.

• 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.

• Our business has been affected by, is currently being adversely affected and could be materially and adversely affected in the future by
the current impacts and evolving effects of the ongoing COVID-19 pandemic. 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.

• 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.

•

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.

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

reputation.

• 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.

Enphase Energy, Inc. | 2021 Form 10-K | 4

•

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 AC Module, IQ8  solar microinverters and Ensemble technology, may not

TM

achieve broader market acceptance, which would prevent us from increasing our revenue and market share.

•

•

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.

• 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.

• 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 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.

• Changes in the U.S. 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.

• 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.

•

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.

• We may fail to realize some or all of the anticipated benefits of the SunPower transaction which may result in conflicts between us and

SunPower.

•

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.

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

•

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

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

Enphase Energy, Inc. | 2021 Form 10-K | 5

Table of Contents

Item 1.    Business

Our Company

PART I

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.  To  date,  we  have  shipped  more  than  42  million  microinverters,  and  approximately  1.9  million  Enphase  residential  and
commercial systems have been deployed in more than 130 countries.

COVID-19 Update

We are actively monitoring, evaluating, and responding to developments relating to the COVID-19 pandemic, which has resulted in, and is
expected to continue to result in substantial manufacturing or supply chain problems, disruptions in local and global economies, volatility in the
global  financial  markets,  overall  reductions  in  demand,  delays  in  payment,  restrictions  on  the  shipment  of  our  products,  or  other  ramifications.
The extent of the impact of COVID-19 on our operational and financial performance will depend on further developments, including the duration
and  spread  of  the  virus  and  its  variants,  impact  on  our  end-customers’  spending,  volume  of  sales,  impact  on  our  partners,  suppliers,  and
employees and actions that may be taken by governmental authorities. The global supply chain and the semiconductor industry are experiencing
challenges.  We  have  seen  supply  chain  challenges  and  logistics  constraints  increase,  including  component  shortages,  which  have,  in  certain
cases,  caused  delays  in  critical  components  and  inventory  and  have  resulted  in  increased  costs.  We  continue  to  work  to  minimize  the  effects
from supply chain constraints. Given the dynamic nature of these circumstances, the full impact of COVID-19 and other macroeconomic factors
on our ongoing business, results of operations and overall financial performance cannot be reasonably estimated at this time. 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.

Industry Background

Historically, traditional central inverters were the only inverter technology used for solar photovoltaic (“PV”) installations. 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
central  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 central inverter approach.

• Reliability issues. Traditional central 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, central inverters typically carry warranties of only 5 to 10 years.

• Complex design and installation requirements. The central inverter-based solar PV installation requires greater effort on the part of the
installer,  both  in  terms  of  design  and  on-site  labor.  Central  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 central inverter technology.

•

•

Lack of monitoring. The majority of solar installations with central inverter technology offer limited monitoring capabilities. If a module in
a central inverter system fails or is not performing to specification, the resulting loss of energy can go unnoticed for an extended period
of time.

Safety issues.  Central  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.

Enphase Energy, Inc. | 2021 Form 10-K | 6

Table of Contents

These challenges of traditional central 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  central  inverter  technology,  however,  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 central 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, central inverter installations operate at high-voltage DC which bears significant fire risks. Further, due to their large size,
central inverter installations can affect architectural aesthetics of the house or commercial building.

The solar industry is transitioning from solar only systems to complete energy management solutions, which consist of solar-plus storage

and load control.

Our Products

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 central inverter system
using  string  modules,  with  or  without  an  optimizer,  approach  that  only  converts  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, powered by
IQ™  Microinverters  and  IQ™  Batteries,  our  current  generation  integrated  solar,  storage,  and  energy  management  offering,  enables  self-
consumption and delivers our core value proposition of yielding more energy, simplifying design and installation, and improving system uptime
and reliability. 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.

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
with  IQ  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, enabling cost-effective remote
maintenance and ongoing utility compliance.

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 alternating current (“AC”) modules. Our IQ7X™ microinverter addresses 96-cell PV
modules  up  to  400W  DC  and  with  its  97.5%  California  Energy  Commission  (“CEC”)  efficiency  rating,  is  ideal  for  integration  into  high  power
modules.

During 2020, we started shipping our IQ7A™ for high-power monofacial and bifacial solar modules to customers in Australia and Europe.
Our  IQ7A  microinverters,  which  began  shipping  to  customers  in  North  America  in  November  2019,  support  up  to  450W  high-power  modules,
targeting high-power residential and commercial applications. Our customers will be able to pair the IQ7A microinverter with monofacial or bifacial
solar modules, up

Enphase Energy, Inc. | 2021 Form 10-K | 7

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to 450 W, from solar module manufacturers who are expected to introduce high-power variants of their products in the next three years.

AC  Module  (“ACM”)  products  are  integrated  systems  which  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,
Panasonic  Corporation  of  North  America,  LONGi  Solar,  Solaria  Corporation,  Hanwha  Q  CELLS,  and  Maxeon  Solar  Technologies,
Sonnenstromfabrik (CS Wismar GmBH), and DMEGC Solar.

We introduced our Enphase IQ Battery storage systems, with usable and scalable capacity of 10.1 kWh and 3.4 kWh, based on Ensemble
OS™ energy management technology, which powers the world’s first grid-independent microinverter-based storage system to customers in North
America during the second quarter of 2020. The Enphase IQ™ Battery storage systems feature Enphase 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 started production shipments of Enphase IQ Batteries to customers in North America during the second quarter of 2020, to customers

in Germany during the second quarter of 2021, and to customers in Belgium in October 2021.

During  the  second  quarter  of  2021,  we  introduced  Load  Control  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. We began shipping our IQ Load Controller™, which includes
updated features, in December 2021. This product will make installation simpler and save time for installers

On  October  21,  2021,  we  announced  that  our  home  energy  systems  will  soon  integrate  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 eliminates the power glitches that reset home electronic appliances when switching to generator power.

On  October  25,  2021,  we  announced  our  Enphase  Energy  System  with  IQ8™  solar  microinverters  for  customers  in  North  America  and
started  shipping  IQ8  products  in  the  fourth  quarter  of  2021.  Our  investment  in  custom  application  specific  integrated  circuit  (ASIC)  chips  has
resulted in a software-defined microinverter smart enough to form a microgrid, a self-sufficient energy system that serves a discrete geographic
footprint.  Many  homeowners  often  assume  that  their  solar  systems  will  function  if  the  sun  is  shining,  even  during  a  utility  outage.  This  has
unfortunately not been true until the introduction of IQ8. Now, with IQ8 homeowners can 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 2021, we announced our participation in the ConnectedSolutions program which is an incentive program implemented by two utilities in
the  Northeast  region  of  the  U.S.  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. In
addition,  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. 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. Facilitating
grid services participation for our customers intended to reduce the lifetime cost of Enphase IQ Batteries and help drive increased demand.

Enphase Energy, Inc. | 2021 Form 10-K | 8

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Recent Acquisitions

In January of 2021, we acquired Sofdesk Inc. (“Sofdesk”), which provides design and proposal software. In March of 2021, we acquired the
solar  design  services  business  of  DIN  Engineering  Services  LLP  (“DIN”),  which  provides  proposal  and  permitting  services,  and  is  focused  on
automating the creation of permit plan sets to further expand the installer base. We acquired 365 Pronto, Inc (“365 Pronto”) in December of 2021,
which  offers  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.  On  December  31,  2021,  we  acquired  ClipperCreek,  Inc.  (“ClipperCreek”),  which  offers
electric vehicle (EV) charging solutions for residential and commercial customers in the U.S. 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 services. This acquisition leverages our power conversion and software platform to manage loads and resources
within the home.

Our home energy systems are architected to efficiently manage generation, storage, and consumption resources in the home to ensure the
best  customer  experience.  During  2021,  we  also  introduced  generator  compatibility  and  grid  services  products  as  part  of  our  home  energy
systems. These systems are integrated 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 certain state of charge, and control it all with the
Enphase App.

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,
and 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  homeowner.  We  are
convinced that continued reinforcement of customer experience improvements 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 owners to expand our market share position in our core markets. In addition, we intend to further increase our market
share in 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 energy management solution 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 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 AC output power in order to pair with higher rated DC modules while reducing costs per watt.

Increase  storage  energy  density,  reduce  install  time  and  cost  per  kWh.  Our  engineering  team  is  focused  on  increasing  the  energy
density of our battery capacity, reducing installation time and reducing 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  generating  revenue  through  digitalization  of  the  business-to-
business and business-to-customer process of the partner and customer journey. Future key focus is to expand our digital presence
through enhancing our array of tools on our digital platforms to keep us continually connected with our installers and homeowners, as
well as increasing the use of the online store significantly.

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Customers and Sales

We  currently  offer  solutions  targeting  the  residential  and  commercial  markets  in  the  U.S.,  Canada,  Mexico,  Europe,  Australia,  New
Zealand, India, Brazil, 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. 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. Strategic partners include a variety of companies including industrial equipment suppliers and providers of solar
financing solutions. In 2021, one customer accounted for approximately 34% of total net revenues. The revenues generated from the U.S. market
have represented 80%, 82% and 84% of our total revenue for the annual period ending on December 31, 2021, 2020 and 2019, respectively.

Manufacturing, Quality Control and Key Suppliers

We outsource the manufacturing of our products to manufacturing partners. Flex Ltd. and affiliates (“Flex”), Salcomp Manufacturing India
Pvt. Ltd. (“Salcomp”) and Sunwoda Electric Co. Ltd. (“Sunwoda”) assemble and test our microinverter, IQ Battery storage systems and Envoy
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 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 (“ATL”) in addition to A123 Systems LLC (“A123”) 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  partnership  with  Flex,  Salcomp  and  Sunwoda  provides  us  with  strategic  manufacturing  capabilities  and  flexibility.  During  the  fourth
quarter of 2021, we announced the shipment of eighth-generation Enphase IQ  microinverters produced at Flex in Mexico and Salcomp in India.
In addition, we began microinverter production at Salcomp in India and started shipping to customers in the fourth quarter of 2020. We anticipate
that this additional manufacturing capacity in Mexico and India could help us to not only mitigate tariffs, but also better serve our customers by
cutting down delivery times and diversifying our supply chain.

TM

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  Enlighten  cloud-based  software
portal.  During  2020,  we  introduced  the  Enphase  Community  to  help  installers  and  homeowners  solve  their  problems  quickly.  We  launched
Service-on-the-Go™  in  Australia,  which  installers  can  use  from  their  mobile  devices  to  get  service  instantly.  During  2021,  we  introduced  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 introduced field service
technicians to provide direct homeowner assistance. Our Net Promoter Score (commonly referred to as “NPS”) improved from 65% in 2020 to
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, adding new features to existing products and systems and reducing unit costs. Our research and development roadmap identifies new
system-level features and defines improvement targets for product cost and performance to support our growth and to optimize the effectiveness
of  our  energy  management  solutions  for  our  customers.  We  measure  the  effectiveness  of  our  research  and  development  against  metrics  that
include product cost, efficiency, reliability and power output, as well as feature content and ease-of-use.

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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, 2021, we had 250 issued
U.S. patents, 79 issued foreign patents, 71 pending U.S. patent applications and 60 pending foreign counterpart patent applications. Our issued
patents are scheduled to expire between years 2022 and 2046. There are no significant patents expiring in 2022.

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 U.S. and in other countries, including Enphase, the Enphase “e”, IQ,
Ensemble  OS,  Encharge,  Envoy,  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.

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  global  and  are  subject  to  various  federal,  state,  local,  and  foreign  laws,  rules  and  regulations.  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.

Privacy and Security Laws

There are privacy and data security laws to which we are currently subject, and/or may in the future be subject. Every U.S. state, members
of the European Economic Area, Switzerland, United Kingdom, Brazil, Mexico, Australia, New Zealand, China, and many other jurisdictions in
which we operate have adopted privacy and data security laws and regulations which impose significant compliance obligations.

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The  European  Union’s  General  Data  Protection  Regulation  (“GDPR”),  which  is  wide-ranging  in  scope,  imposes  several  requirements
relating to a variety of matters, including the control over personal data by individuals to whom the personal data relates, the information provided
to the individuals, the documentation we must maintain, the security and confidentiality of the personal data, data breach notification, and the use
of third-party processors in connection with the processing of personal data. The GDPR also imposes strict rules on the transfer of personal data
outside of the EU, provides an enforcement authority and authorizes the imposition of large penalties for noncompliance, including the potential
for significant fines. The GDPR requirements apply not only to third-party transactions, but also to transfers of information between us and our
subsidiaries, including employee information. The GDPR has increased our responsibility and potential liability in relation to all types of personal
data that we process and we may be required to put in place additional mechanisms to ensure compliance with the GDPR, which could divert
management’s attention and increase our cost of doing business. However, despite our ongoing efforts to bring our practices into compliance with
the GDPR, we may not be successful either due to various factors within our control or other factors outside our control.

Additionally,  we  are  governed  by  a  California  state  privacy  law  called  the  California  Consumer  Privacy  Act  of  2018  (“CCPA”),  which
contains  requirements  similar  to  GDPR  for  the  handling  of  personal  information  of  California  residents.  The  CCPA  establishes  a  privacy
framework for covered businesses, including an expansive definition of personal information and data privacy rights for California residents. The
CCPA  includes  a  framework  with  potentially  severe  statutory  damages  and  private  rights  of  action.  The  CCPA  requires  covered  companies  to
provide new disclosures to California consumers (as that word is broadly defined in the CCPA), and new ways for such consumers to opt-out of
certain sales of personal information, and to allow for a new cause of action for data breaches. Further, California voters approved a new privacy
law,  the  California  Privacy  Rights  Act  (“CPRA”)  in  the  November  3,  2020  election.  Effective  starting  on  January  1,  2023,  the  CPRA  will
significantly  modify  the  CCPA,  including  by  expanding  the  consumers’  rights  with  respect  to  certain  sensitive  personal  information.  The  CPRA
also creates a new state agency that will be vested with authority to implement and enforce the CCPA and the CPRA. New legislation proposed
or  enacted  in  various  other  states  will  continue  to  shape  the  data  privacy  environment  nationally.  For  example,  on  March  2,  2021,  Virginia
enacted  the  Virginia  Consumer  Data  Protection  Act  (“CDPA”),  which  becomes  effective  on  January  1,  2023,  and  on  June  8,  2021,  Colorado
enacted  the  Colorado  Privacy  Act  (“CPA”)  which  takes  effect  on  July  1,  2023.  The  CPA  and  CDPA  are  similar  to  the  CCPA  and  CPRA,  but
aspects of these state privacy statutes remain unclear, resulting in further legal uncertainty.

The  GDPR,  CCPA,  CPRA,  CPA  and  CDPA  exemplify  the  vulnerability  of  our  business  to  the  evolving  regulatory  environment  related  to
personal data. Other states in the U.S. have passed or are considering privacy laws, and additional countries have in recent years implemented
new privacy laws. Our compliance costs and potential liability may increase with this scattered regulatory environment.

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.

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.

Our revenue in the fourth quarter of 2019 and first quarter of 2020 was positively impacted by the scheduled phase-down of the investment

tax credit for solar projects under Section 48(a) (the “ITC”) of the Internal Revenue

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Code of 1986, as amended (the “Code”). The Renewable Energy and Job Creation Act of 2008 provided a 30% federal tax credit for residential
and commercial solar installations through December 31, 2019, which was reduced to a tax credit of 26% for any solar energy system that began
construction during 2020 through December 31, 2022, and 22% thereafter to December 31, 2023 before being reduced to 10% for commercial
installations  and  0%  for  residential  installations  beginning  on  January  1,  2024.  As  a  result,  several  of  our  customers  explored  opportunities  to
purchase  products  in  2019  to  take  advantage  of  safe  harbor  guidance  from  the  IRS  published  in  June  2018,  allowing  them  to  preserve  the
historical 30% investment tax credit for solar equipment purchased in 2019 for solar projects that are completed after December 31, 2019.

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.

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.

Competitors  in  the  inverter  market  include,  among  others,  SolarEdge  Technologies,  Inc.,  Fronius  International  GmbH,  SMA  Solar
Technology AG, AP Systems, Generac, Tesla, Inc., Huawei Technologies Co. Ltd., Delta, Ginglong, Sungrow, Solax and other companies offering
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,  Goal
Zero, SimpliPhi and other producers of battery cells and integrated storage systems.

Human Capital Resources

As of December 31, 2021, we had 2,260 full-time employees. Of the full-time employees, 630 were engaged in research and development,
615 in sales and marketing, 180 in general and administration, 732 in design permitting services and 103 in manufacturing and operations. Of
these employees, 561 were in the United States, 1,428 in India, 85 in New Zealand, 67 in Europe, 48 in Canada, 25 in Australia, 21 in China, 17
in Mexico and 8 in Brazil.

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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

• 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 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. In response to the global COVID-19 pandemic, we
instituted a global work-from-home policy beginning in March 2020, which has been modified to allow certain employees to work in certain of our
offices when and as business necessitate. We are conducting business as usual with restrictions to employee travel, and we have

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transitioned in-person marketing events to virtual formats, among other modifications. We expect these changes will substantially remain in effect
in the first quarter of 2022 and could extend to future quarters. We will continue to actively monitor the situation, including progress made through
vaccinations, and we will make further changes to our business operations as may be required 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 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 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 Securities Exchange
Act of 1934, as amended ( 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  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

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 U.S., 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.

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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 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 significantly 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 Net Surplus
Compensation (“NSC”) (i.e., the retail rate for electricity exported to the grid, less certain non-bypassable fees to the consumer). For example, in
2016  California’s  Public  Utilities  Commission  (“CPUC”)  issued  an  order  retaining  retail-based  net  metering  credits  for  residential  customers  of
California's  major  utilities  as  part  of  Net  Energy  Metering  2.0  ("NEM  2.0").  Under  NEM  2.0,  new  distributed  generation  customers  receive  the
NSC. Customers under NEM 2.0 also 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  Net  Energy  Metering  3.0  ("NEM  3.0"),  also  referred  to  by  the  CPUC  as  the  NEM  2.0
successor  tariff,  and  issued  its  draft  decision  on  December  13,  2021.  While  the  outcome  of  this  proceeding  is  uncertain,  it  could  result  in  a
significant reduction of the NSC payments for new solar customers and introduces a monthly grid participation charge of approximately $8/KW,
which significantly affects the economics of buying solar. Proceedings on distributed energy policy and utility rates before the CPUC could also
result in changes that affect customers with distributed generation systems. Changes such as NEM 3.0 in California or other jurisdictions could
reduce demand for solar PV systems (including our products) and harm our business.

If demand for solar energy solutions does not grow or grows at a slower rate than we anticipate, including as a result of the ongoing
COVID-19 pandemic, our business will suffer.

Our IQ™ microinverter, AC 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 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

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•

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.

Short-term  demand  and  supply  imbalances,  especially  for  solar  module  technology,  have  recently  caused  prices  for  solar  technology
solutions to decline rapidly. Furthermore, competition in the solar industry has increased due to the emergence of lower-cost manufacturers along
the entire solar value chain causing further price declines, excess inventory and oversupply. These market disruptions may continue to occur and
may increase pressure to reduce prices, which could adversely affect our business and financial results.

Further,  our  success  depends  on  continued  demand  for  solar  energy  solutions  and  the  ability  of  solar  equipment  vendors  to  meet  this
demand. The ongoing impact of the COVID-19 pandemic is fluid and uncertain, but it has caused and may continue to cause various negative
effects, including an inability to meet the needs of our existing or potential end-customers due to supply chain constraints. The demand for solar
energy solutions may continue to decrease, or at least not continue its growth relative to pre-pandemic periods and recent years, as a result of
government  orders  associated  with  the  COVID-19  pandemic,  due  to  adverse  worldwide  economic  and  market  conditions,  or  other  factors.  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 rapidly changing solar industry makes it difficult to evaluate our current business and future prospects.

The  solar  energy  industry  is  one  of  the  fastest  growing  forms  of  renewable  energy  and  is  undergoing  and  subject  to  rapid  change.  The
solar energy industry will take several more years to develop and further mature, which makes it difficult to evaluate our current business, and we
cannot be certain that the market will grow to the size or at the rate we expect. We have encountered and will continue to encounter risks and
difficulties frequently experienced by growing companies in rapidly changing industries, including increased expenses as we continue to grow our
business. If we do not manage these risks and overcome these difficulties successfully, our business will suffer.

Since we began commercial shipments of our products, our revenue, gross profit and results of operations have varied and are likely to
continue to vary from quarter to quarter due to a number of factors, many of which are not within our control. It is difficult for us to accurately
forecast  our  future  revenue  and  gross  profit  and  plan  expenses  accordingly  and,  therefore,  it  is  difficult  for  us  to  predict  our  future  results  of
operations.

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.

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Our business has been affected by, is currently being adversely affected and could be materially and adversely affected in the future
by the current impacts and evolving effects of the ongoing COVID-19 pandemic. 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 the efforts to control it have adversely affected, and could continue to adversely affect, 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 affected and could continue to
have an adverse impact on our business and operations. For example, the general constraints in the market for the semiconductors has been
disrupted by the COVID-19 pandemic, and that disruption has impacted and may in future further impact the component supply for our IQ7 and
IQ8 products. As a result of these supply chain constraints and possible disruptions, we are working to expand our supplier base, but there can
be  no  assurance  that  these  efforts  will  be  successful  or  that  supply  chain  constraints  and  disruptions  will  not  continue,  or  worsen.  Limits  on
manufacturing  availability  or  capacity,  or  delays  in  production  or  delivery  of  components,  due  to  COVID-19-related  restrictions  could  delay  or
inhibit  our  ability  to  obtain  supply  of  components  and  produce  finished  products  and  offerings,  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 the ongoing COVID-
19  pandemic.  Further,  the  extent  to  which  the  ongoing  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.

The ultimate extent of the impact of the COVID-19 pandemic on our business, financial condition and results of operations will depend on
future  developments,  including  those  that  are  highly  uncertain  and  cannot  be  predicted  with  confidence  at  this  time,  including  the  ultimate
duration of the pandemic, travel restrictions, quarantines, social distancing and business closure requirements in the U.S. and other countries,
and the effectiveness of actions taken globally to contain and treat the disease. It is possible that additional legislation or governmental action will
be taken in response to the evolving effects of the COVID-19 pandemic. We cannot assure you as to the ultimate content, timing, or effect of
changes, nor is it possible at this time to estimate the impact of any such potential legislation or governmental action; however, such changes or
the ultimate impact of changes could negatively affect our revenue or sales of our current and or potential future products. 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.

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 manufacturing partners. Flex and Salcomp assemble and test our IQ microinverter,
AC and IQ Battery storage systems and Envoy 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  agreements.  As  of
December  31,  2021,  our  related  purchase  obligations  (including  amounts  related  to  component  inventory  procured  by  our  primary  contract
manufacturers  on  our  behalf)  were  approximately  $424.6  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.

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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 ATL
in  addition  to  A123  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 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
U.S.  We  believe  that  the  location  of  these  facilities  outside  of  the  U.S.  increases  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.  For  example,  we  have  experienced  a  volume  shortage  of  components  and  may
experience in future as well. 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.

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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, 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, 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.

Component shortages have required us and may continue to require us to incur expedited shipping costs to meet delivery schedules, which

impacts our revenue and gross profit.

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 our customers also use or
market and sell products from our competitors, which may reduce our sales. Our customers may generally terminate their relationships with us at
any time, or with short notice. Our customers may fail to devote 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.

In  addition,  while  we  provide  our  distributors  and  installers  with  training  and  other  programs,  including  accreditations  and  certifications,
these  programs  may  not  be  effective  or  utilized  consistently.  In  addition,  new  partners  may  require  extensive  training  and  may  take  significant
time and resources to achieve productivity. Our partners may subject us to lawsuits, potential liability, and reputational harm if, for example, any
of our partners 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 partners 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.

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Concerns over competitive matters or intellectual property ownership could constrain the growth and development of these partnerships or result
in the termination of one or more partnerships. If we fail to effectively manage and grow our network of partners, 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  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.

Competitors  in  the  inverter  market  include,  among  others,  SolarEdge  Technologies,  Inc.,  Fronius  International  GmbH,  SMA  Solar
Technology AG, AP Systems, Generac, Tesla, Inc., Huawei Technologies Co. Ltd., Delta, Ginglong, Sungrow, Solax and other companies offering
string  inverters.  Other  existing  or  emerging  companies  may  also  begin  offering  alternative  microinverter,  DC-to-DC  optimizer,  energy  storage,
monitoring and other solutions that compete with our products. Competitors in the storage market include Tesla, LG Chem, Sonnen, Generac,
Panasonic, BYD, E3/DC, Senec, Schneider, Goal Zero, Simpliphi and other producers of battery cells and integrated storage systems.

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.

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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,  2021,  one  customer  accounted  for  approximately  34%  of  total  net  revenues.  Further,  as  of
December 31, 2021, amounts due from one customer represented approximately 38% 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 have 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 AC Module, IQ8  solar microinverters and Ensemble technology, may
not achieve broader market acceptance, which would prevent us from increasing our revenue and market share.

TM

If  we  fail  to  achieve  broader  market  acceptance  of  our  products,  including  international  acceptance  of  our  IQ8   microinverters  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:

TM

•

•

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;

our  ability  to  develop  products  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 “AC module” versions of our microinverter system 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  “AC  Module”  solutions  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  partnerships  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 U.S.

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

We  currently  offer  solar  microinverter  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;

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 the skilled employees and efficient execution of our project plan.

Further, new geographic markets and larger commercial and utility-scale installation markets have different characteristics from the markets
in  which  we  currently  sell  products,  and  our  success  will  depend  on  our  ability  to  properly  address  these  differences.  These  differences  may
include:

•

•

•

•

•

•

•

•

•

•

differing  regulatory  requirements,  including  tax  laws,  trade  laws,  labor,  safety,  local  content,  recycling  and  consumer  protection
regulations, tariffs, export quotas, customs duties or other trade restrictions;

limited or unfavorable intellectual property protection;

risk of change in international political or economic conditions;

restrictions on the repatriation of earnings;

fluctuations in the value of foreign currencies and interest rates;

difficulties and increased expenses in complying with a variety of U.S. and foreign laws, regulations and trade standards, including the
U.S. Foreign Corrupt Practices Act (“FCPA”) and U.K. Bribery Act;

potentially longer sales cycles;

generally longer payment cycles and greater difficulty in collecting accounts receivable;

higher volume requirements;

increased customer concentrations;

• warranty expectations and product return policies; and

•

cost, performance and compatibility requirements.

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.

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We may fail to capture customers in the new product and geographic markets that we are pursuing.

We  are  pursuing  opportunities  in  energy  management  and  energy  storage  which  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, these new potential business segments fail to translate into revenue in the quantities or timeline projected, thus,
having a materially adverse impact on our revenue, operating results and financial stability.

In the fourth quarter of 2019, we announced our IQ8
TM

solar microinverters and Ensemble technology. We started production shipments of
Ensemble technology and IQ8   microinverters  to  customers  in  North  America  during  the  second  quarter  of  2020  and  fourth  quarter  of  2021,
respectively.  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.

TM 

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.

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.

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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.

We are 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. Existing and future laws and regulations may impede the growth of the use of the internet, availability of
economic  broadband  access,  or  other  online  services,  and  increase  the  cost  of  providing  our  digital  delivery  of  content  and  services.  These
regulations and laws may cover taxation, tariffs, user privacy, data protection, pricing, content, copyrights, distribution, electronic contracts and
other communications, consumer protection, broadband internet access and the characteristics and quality of services. It is not clear how existing
laws governing issues such as property ownership, sales, use and other taxes, libel and personal privacy apply to the internet and e-commerce.
Unfavorable resolution of these issues may harm our business and results of operations.

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 partners and cause a reduction in sales from
these partners. Our existing partners 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 partners 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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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. These types of attacks have increased, in general, as more businesses implement remote working environments. 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.

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.

The effects of a security breach of privacy violation could be further amplified during the current COVID-19 pandemic. In addition, 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; or (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.

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

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estimates are in turn based on a number of factors such as customer tariff structures, estimated wholesale electricity prices 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’ solar PV systems, including
names,  addresses,  e-mail  addresses,  credit  information  and  energy  production  statistics.  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  U.S.  and  Europe.  California  enacted  the  CCPA,  which  creates  individual  privacy  rights  for  California
consumers and increases the privacy and security obligations of entities handling certain personal data. The CCPA went into effect on January 1,
2020, and became enforceable by the California Attorney General on July 1, 2020. The CCPA has been amended from time to time, and, further
a new privacy law, the California Privacy Rights Act, or CPRA, was approved by California voters in the November 3, 2020 election. Effective
starting January 1, 2023, the CPRA will significantly modify the CCPA, including by expanding consumers’ rights with respect to certain sensitive
personal information. The CPRA also creates a new state agency that will be vested with authority to implement and enforce the CCPA and the
CPRA. It remains unclear what, if any, further modifications will be made to the CCPA or CPRA, or how such legislation will be interpreted. New
legislation proposed or enacted in various other states will continue to shape the data privacy environment nationally. For example, on March 2,
2021, Virginia enacted the Virginia Consumer Data Protection Act (“CDPA”), which becomes effective on January 1, 2023, and on June 8, 2021,
Colorado enacted the Colorado Privacy Act (“CPA”), which takes effect on July 1, 2023. The CPA and CDPA are similar to the CCPA and CPRA
but  aspects  of  these  state  privacy  statutes  remain  unclear,  resulting  in  further  legal  uncertainty  and  potentially  requiring  us  to  modify  our  data
practices and policies and to incur substantial additional costs and expenses in an effort to comply. Complying with the GDPR, CCPA, CPRA,
CDPA, CPA, or other 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 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. Certain other state laws impose similar privacy obligations and all 50 states have laws including 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.

In  May  25,  2018,  the  European  Union  (“EU”),  implemented  the  GDPR,  a  broad  data  protection  framework  that  expands  the  scope  of

current EU data protection law to non-EU entities that process, or control the processing of, the personal information of EU subjects.

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The GDPR imposes stringent requirements for controllers and processors of personal data, including, for example, more robust disclosures
to  individuals  and  a  strengthened  individual  data  rights  regime,  shortened  timelines  for  data  breach  notifications,  limitations  on  retention  of
information, increased requirements pertaining to special categories of data, such as health data, and additional obligations when we contract
with third-party processors in connection with the processing of the personal data. The GDPR also imposes strict rules on the transfer of personal
data out of the EU and the EEA to the United States and other third countries. In July 2020, the Court of Justice of the European Union issued a
decision that struck down the EU-U.S. Privacy Shield framework, which provided companies with a mechanism to comply with data protection
requirements when transferring personal data from the EU to the United States and additionally called into question the validity of the European
Commission’s  Standard  Contractual  Clauses,  on  which  U.S.  companies  rely  to  transfer  personal  data  from  Europe  to  the  United  States  and
elsewhere. If we or our vendors fail to comply with the GDPR and the applicable national data protection laws of the EU or EEA member states,
or  if  regulators  assert  we  have  failed  to  comply  with  these  laws,  it  may  lead  to  regulatory  enforcement  actions,  which  can  result  in  monetary
penalties of up to €20,000,000 or up to 4% of the total worldwide annual turnover of the preceding financial year, whichever is higher, and other
administrative penalties.

Further, following the United Kingdom’s withdrawal from the EU and the EEA, and the expiry of the transition period, companies have to
comply  with  both  the  GDPR  and  the  GDPR  as  incorporated  into  the  United  Kingdom  national  law,  the  Data  Protection  Act  of  2018,  the  latter
regime  having  the  ability  to  separately  fine  up  to  the  greater  of  £17.5  million  or  4%  of  global  turnover.  On  June  28,  2021,  the  European
Commission  announced  a  decision  of  “adequacy”  concluding  that  the  UK  ensures  an  equivalent  level  of  data  protection  to  the  GDPR,  which
provides some relief regarding the legality of continued personal data flows from the EEA to the UK. Some uncertainty remains, however, as this
adequacy determination must be renewed after four years and may be modified or revoked in the interim. We cannot fully predict how the Data
Protection  Act,  the  UK  GDPR,  and  other  UK  data  protection  laws  or  regulations  may  develop  in  the  medium  to  longer  term  nor  the  effects  of
divergent laws and guidance regarding how data transfers to and from the UK will be regulated.

Compliance  with  U.S.  and  international  data  protection  laws  and  regulations  could  cause  us  to  incur  substantial  costs  or  require  us  to
change  our  business  practices  and  compliance  procedures  in  a  manner  adverse  to  our  business.  Our  and  our  collaborators’  and  contractors’
failure to fully comply with GDPR, the CCPA and other laws could lead to significant fines and require onerous corrective action. In addition, data
security breaches experienced by us, our collaborators or contractors could result in the loss of trade secrets or other intellectual property, public
disclosure of sensitive commercial data, and the exposure of personally identifiable information (including sensitive personal information) of our
employees, customers, collaborators and others. Compliance with these and any other applicable privacy and data security laws and regulations
is a rigorous and time-intensive process, and we may be required to put in place additional mechanisms ensuring compliance with the new data
protection rules. Furthermore, the laws are not consistent, and compliance with various different requirements may be costly. If we fail to comply
with any such laws or regulations, we may face significant fines and penalties that could adversely affect our 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.

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If  we  fail  to  protect,  or  incur  significant  costs  in  defending,  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 U.S. and in other countries, some 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. 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 in information technology systems and network infrastructures that could have a material
adverse effect on our business and financial condition.

We rely on the efficient and uninterrupted operation of complex information technology systems and network infrastructures to operate our
business.  In  addition,  our  Enlighten  web-based  monitoring  service,  which  our  installers  and  end-user  customers  use  to  track  and  monitor  the
performance of their solar PV 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 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 Enlighten 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.

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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 U.S.
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:

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•

•

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 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.

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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.

We  may  not  be  able  to  protect  and  enforce  our  trademarks  and  trade  names,  or  build  name  recognition  in  our  markets  of  interest
thereby harming our competitive position.

The  registered  or  unregistered  trademarks  or  trade  names  that  we  own  may  be  challenged,  infringed,  circumvented,  declared  generic,
lapsed or determined to be infringing on or dilutive of other marks. We may not be able to protect our rights in these trademarks and trade names,
which we need in order to build name recognition. In addition, third parties have filed, and may in the future file, for registration of trademarks
similar  or  identical  to  our  trademarks,  thereby  impeding  our  ability  to  build  brand  identity  and  possibly  leading  to  market  confusion.  If  they
succeed in registering or developing common law rights in such trademarks, and if we are not successful in challenging such rights, we may not
be able to use these trademarks to develop brand recognition of our technologies, products or services. In addition, there could be potential trade
name  or  trademark  infringement  claims  brought  by  owners  of  other  registered  trademarks  or  trademarks  that  incorporate  variations  of  our
registered or unregistered trademarks or trade names. If third parties succeed they succeed in registering such trademarks in the U.S. or other
countries, and if we are not successful in challenging such third party rights, we may not be able to use these trademarks to market our products
and technologies such countries. If we do not secure registrations for our trademarks, we may encounter more difficulty in enforcing them against
third parties than we otherwise would. If we are unable to establish name recognition based on our trademarks and trade names, we may not be
able to compete effectively, which could harm our business, financial condition, results of operations and prospects. And, over the long-term, if we
are unable to establish name recognition based on our trademarks, then our marketing abilities may be materially adversely impacted.

Obtaining  and  maintaining  our  patent  protection  depends  on  compliance  with  various  required  procedures,  document  submissions,
fee  payments  and  other  requirements  imposed  by  governmental  patent  agencies,  and  our  patent  protection  could  be  reduced  or
eliminated for non-compliance with these requirements.

Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees on patents and/or applications will be due to be

paid to the USPTO and various governmental patent agencies outside of the United States at several stages over the lifetime of the patents
and/or applications. We have systems in place to remind us to pay these fees, and we engage an outside service and rely on our outside counsel
to pay these fees due to non-U.S. patent agencies. The USPTO and various non-U.S. governmental patent agencies require compliance with a
number of procedural, documentary, fee payment and other similar provisions during the patent application process. We employ reputable law
firms and other professionals to help us comply, and in many cases, an inadvertent lapse can be cured by payment of a late fee or by other
means in accordance with the applicable rules. However, there are situations in which non-compliance can result in abandonment or lapse of the
patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. In such an event, our competitors may
be able to enter the market without infringing our patents and this circumstance would have a material adverse effect on our business.

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Patent terms may be inadequate to protect our competitive position on our products for an adequate amount of time.

Patents have a limited lifespan. In the United States, if all maintenance fees are timely paid, the natural expiration of a patent is generally
20  years  from  its  earliest  U.S.  non-provisional  filing  date.  Various  extensions  may  be  available,  but  the  life  of  a  patent,  and  the  protection  it
affords,  is  limited.  Even  if  patents  covering  our  products  are  obtained,  once  the  patent  life  has  expired,  we  may  be  open  to  competition  from
competitive products. If one of our products requires extended development, testing and/or regulatory review, patents protecting such products
might expire before or shortly after such products are commercialized. As a result, our owned and licensed patent portfolio may not provide us
with sufficient rights to exclude others from commercializing products similar or identical to ours.

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  or  international  trade,  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 around the world, could materially and adversely affect our
business, financial condition and results of operations. In addition, changes in our products or further changes in tariffs, export and import laws
and  implementing  regulations  may  create  delays  in  the  introduction  of  new  products  in  international  markets,  prevent  our  customers  from
deploying our products internationally or, in some cases, prevent the export or import of our products to certain countries altogether.

For  example,  several  states  or  territories,  including  California,  Hawaii  and  Queensland,  Australia,  have  either  implemented  or  are
considering implementing new restrictions on incentives or rules regulating the installation of solar power systems with which we may not be able
to comply. 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 products in such states, and our business as a result, may be adversely impacted.

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.

Additionally, if the U.S. 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 U.S. and other geographical markets, it would harm our business, financial condition and results
of operations.

Changes in the U.S. 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,  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

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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 LFP lithium-ion phosphate 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  lithium-ion  phosphate  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.

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,  2021,  approximately  63%  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. Our current international operations and our plans to expand our international operations have placed, and will
continue to place, a strain on our employees, management systems and other resources. We have instituted work-from-home policy which we
expect  will  remain  in  effect  in  the  first  quarter  of  2022  and  could  extend  to  future  quarters.  We  will  continue  to  actively  monitor  the  situation,
including progress made through vaccinations, and we will make further changes to our business operations as may be required by federal, state,
or local authorities and that we determine are in the best interests of our employees.

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

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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 regulations;

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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;

higher employee costs and difficulty in terminating non-performing employees;

differences in workplace cultures;

unexpected changes in regulatory requirements;

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;

fluctuations in currency exchange rates;

anti-bribery compliance by us or our partners;

restrictions on the transfer of funds;

global epidemics, pandemics, or contagious diseases; and

new and different sources of competition.

Our failure to manage any of these risks successfully could harm our existing and future international operations and seriously impair our

overall business.

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. Although, we implement policies and procedures and conduct 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 (see discussion of “Legal Proceedings” in Item 3, Part I of this
Annual  Report  on  Form  10-K).  The  outcome  of  some  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.

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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;

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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;

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.

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.

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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 the
short term due to the COVID-19 pandemic and in light of 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 a substantial majority of our revenues come from the
U.S.,  and  revenues  generated  from  the  U.S.  market  have  represented  80%,  82%  and  84%  of  our  total  revenue  for  annual  period  ending  on
December  31,  2021,  2020  and  2019,  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 U.S. federal and state tax incentives) that are expected to phase-out or terminate in
the future, which could adversely affect sales of our products in North America and other markets. For instance, the Renewable Energy and Job
Creation Act of 2008 provided a 30% federal tax credit for residential and commercial solar installations through December 31, 2019, which was
reduced to a tax credit of 26% for any solar energy system that began construction during 2020 through December 31, 2022, and 22% thereafter
to  December  31,  2023  before  being  reduced  to  10%  for  commercial  installations  and  0%  for  residential  installations  beginning  on  January  1,
2024. As a result, several of our customers explored opportunities to purchase products in 2019 to take advantage of safe harbor guidance from
the IRS published in June 2018, allowing them to preserve the historical 30% investment tax credit for solar equipment purchased in 2019 for
solar projects that are completed after December 31, 2019. These tax credits could be reduced or eliminated as part of the U.S. Internal Revenue
Code of 1986, as amended (the “Code”), changes or regulatory reform initiatives by the current Congress or the new presidential administration.

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 proposal, 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.

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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  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,  2021,  we  had  approximately  $897.3  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

We may fail to realize some or all of the anticipated benefits of the SunPower transaction which may result in conflicts between us and
SunPower.

Our  ability  to  realize  the  anticipated  benefits  of  the  SunPower  transaction  will  depend,  to  a  large  extent,  on  our  ability  to  successfully
execute the terms of the SunPower Master Supply Agreement (“MSA”), which is a complex and time-consuming process. Any delay, failure or
breach  of  obligations  under  the  MSA  could  adversely  impact  the  expected  benefits  of  the  transaction  and  could  otherwise  have  a  material
adverse  effect  on  our  business,  financial  condition  and  results  of  operations.  Additionally,  in  connection  with  the  SunPower  APA  transaction,
SunPower acquired 7.5 million shares of our common stock in August 2018 and the right to designate one member of our board of directors. As
of December 31, 2021, SunPower held 2.5 million shares of our common stock.

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, we acquired Sofdesk, the solar design business of DIN, 365 Pronto and ClipperCreek. 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;

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•

•

•

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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.

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.

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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  intangibles.  As  of  December  31,  2021,  goodwill  and  amortizable  intangible  assets  were  approximately  $181.3  million  and  $97.8  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 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.  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

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 June 2019, we issued and sold a total of $132.0 million aggregate principal amount of our 1.0% convertible senior notes due 2024 (the
“Notes due 2024”). During the period ended December 31, 2021, the remaining $88.1 million aggregate principal amount of the Notes due 2024
were converted and, as of December 31, 2021, Notes due 2024 are no longer outstanding.

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, 2021. Therefore, the Notes due 2025
became convertible at the holders’ option beginning on January 1, 2022 and continue to be convertible through March 31, 2022. Accordingly, we
have  classified  the  net  carrying  amount  of  the  Notes  due  2025  of  $86.1  million  as  debt,  current  on  the  consolidated  balance  sheet  as  of
December 31, 2021.

We may receive conversion requests that require settlement in the first quarter of 2022. 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.

As of December 31, 2021,

•

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

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$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”);

$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 $397.91, $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 2028, Notes due 2026 and 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
Notes  due  2028  and  Notes  due  2026,  conversion  option  meets  the  classification  of  an  equity  component,  hence  we  have  included  the  equity
component in the additional paid-in capital section of stockholders’ equity on our condensed consolidated balance sheet at the issuance date. For
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 2028, Notes due 2026 and Notes due 2025, which could adversely affect our reported or
future financial results or the trading price of our common stock.

In addition, we use the treasury stock method for convertible debt instruments (such as the Notes due 2028 and Notes due 2026 since the
date of issuance and Notes due 2025 since May 20, 2020) that may be settled entirely or partly in cash, and the effect of which is that any shares
issuable upon conversion of the notes are not included in the calculation of diluted earnings per share except to the extent that the conversion
value of such notes exceeds their principal amount. 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, which requires the Notes due 2028 and Notes due 2026 to be
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  will  be  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 and Notes due 2026. The if-converted method will be
used for the calculation of the diluted earnings per share calculation, when accounting for the shares issuable upon conversion of the Notes due
2028 and Notes due 2026, which will adversely affect our diluted earnings per share.

Enphase Energy, Inc. | 2021 Form 10-K | 42

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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 and Notes
due 2024. Upon cash settlement, repayment of the principal amount of the Notes due 2025 and Notes due 2024 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  effective  interest  rate,  and  financing  activities  for  the  remainder.  This  will  require  us  to  classify  the  debt  discount
totaling $68.7 million for Notes due 2025 and $36.4 million for the Notes due 2024 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.  In  our
consolidated statement of cash flows for the year ended December 31, 2021, $15.7 million of the debt discount associated with the conversion of
$217.8 million and $88.1 million in aggregate principal amount of the Notes due 2025 and Notes due 2024, respectively, was classified as cash
used in operating activities.

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 and 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 or international currency fluctuations, may negatively affect the market price of our common stock, regardless of
our operating performance.

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 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.

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 impacts and the evolving effects of the ongoing COVID-19 pandemic 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;

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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;

unanticipated increases in costs or expenses;

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 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 impacts of the COVID-19 pandemic they may experience;

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 our gross profit;

our ability to predict our revenue and plan our expenses appropriately;

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;

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, access to margin
debt, trading in options and other derivatives on our common stock and any related hedging or other technical trading factors;

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

actions  by  research  analysts,  such  as  if  they  issue  unfavorable  commentary  or  downgrade  our  common  stock  or  cease  publishing
reports about us or our business.

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.

If research analysts do not publish research about our business or if they issue unfavorable commentary or downgrade our common
stock, our stock price and trading volume could decline.

The  trading  market  for  our  common  stock  depends  in  part  on  the  research  and  reports  that  research  analysts  publish  about  us  and  our
business. The price of our common stock could decline if one or more research analysts downgrade our stock or if those analysts issue other
unfavorable commentary or cease publishing reports about us or our business. If one or more of the research analysts ceases coverage of our
company or fails to publish reports on us regularly, demand for our common stock could decrease, which could cause our stock price or trading
volume to decline.

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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.

Sales of a substantial number of shares of our common stock in the public market by our existing stockholders could cause our stock
price to fall.

Sales of a substantial number of shares of our common stock in the public market or the perception that these sales might occur, could
depress the market price of our common stock and could impair our ability to raise capital through the sale of additional equity securities. We are
unable to predict the effect that sales may have on the prevailing market price of our common stock. All of the outstanding shares of our common
stock are eligible for sale in the public market, subject in some cases to agreed limits on sale volumes and the volume limitations and manner of
sale requirements of Rule 144 under the Securities Act of 1933, as amended (the “Securities Act”). Sales of stock by our stockholders could have
a material adverse effect on the trading price of our common stock.

Certain holders of our securities are entitled to rights with respect to the registration of their shares under the Securities Act. Registration of

these shares under the Securities Act would result in the shares becoming freely tradable without restriction under the Securities Act.

Manipulative techniques employed by short sellers may drive down the market price of our common stock.

Short selling is the practice of selling securities that the seller does not own, but rather has borrowed from a third party with the intention of
buying  identical  securities  back  at  a  later  date  to  return  to  the  lender.  Short  sellers  hope  to  profit  from  a  decline  in  the  value  of  the  securities
between the sale of the borrowed securities and the purchase of the replacement shares, as the short seller expects to pay less in that purchase
than it received in the sale. As it is in the short seller’s best interests for the price of the stock to decline, some short sellers publish, or arrange for
the publication of, negative opinions regarding the issuer and its business prospects in order to create negative market momentum and generate
profits for themselves after selling a stock short. 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.  Issuers  with  limited  trading  volumes  or  substantial  retail  shareholder  bases  can  be  particularly  susceptible  to  higher  volatility
levels, and can be particularly vulnerable to such short attacks.

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Short seller publications are not regulated by any governmental, self-regulatory organization or other official authority in the U.S., are not
subject to the certification requirements imposed by the SEC in Regulation Analyst Certification and, accordingly, the opinions they express may
be based on distortions of actual facts or, in some cases, outright fabrications. In light of the limited risks involved in publishing such information,
and the significant profits that can be made from running successful short attacks, short sellers have issued such reports on our stock and will
likely continue to issue such reports. Such short-seller attacks may cause our stock to suffer a decline in market price.

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;

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.

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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, public health events and other 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 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.

Further,  any  terrorist  attacks,  material  disruption  to  our  information  technology  systems  or  any  data  security  breaches,  including  due  to
cyber-attacks, especially any aimed at energy or communications infrastructure suppliers or our cloud-based monitoring service, could hinder or
delay the development and sale or performance of our products or otherwise adverse affect us. Such significant disruptions of our, our third party
vendors’  and/or  business  partners’  information  technology  systems  or  data  security  breaches,  including  in  our  remote  work  environment  as  a
result of COVID-19, could adversely affect our business operations and/or result in the loss, misappropriation, and/or unauthorized access, use or
disclosure of, or the prevention of access to, confidential information (including trade secrets or other intellectual property, proprietary business
information  and  personal  information),  and  could  result  in  financial,  legal,  business  and  reputational  harm  to  us.  Any  such  event  that  leads  to
unauthorized  access,  use  or  disclosure  of  personal  information,  including  personal  information  regarding  our  customers,  could  harm  our
reputation, compel us to comply with federal and/or state breach notification laws and foreign law equivalents, subject us to mandatory corrective
action, require us to verify the correctness of database contents and otherwise subject us to liability under laws and regulations that protect the
privacy and security of personal information, which could disrupt our business, result in increased costs or loss of revenue, and/or result in legal
and financial exposure. In addition, security breaches and other inappropriate access can be difficult to detect, and any delay in identifying them
may further harm us. Moreover, the prevalent use of mobile devices to access confidential information increases the risk of security breaches.
While we have implemented security measures to protect our information technology systems and infrastructure, there can be no assurance that
such  measures  will  prevent  service  interruptions  or  security  breaches  that  could  adversely  affect  our  business.  In  addition,  failure  to  maintain
effective  internal  accounting  controls  related  to  security  breaches  and  cybersecurity  in  general  could  impact  our  ability  to  produce  timely  and
accurate financial statements and subject us to regulatory scrutiny.

In the event that natural disasters, 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.

The threat of global economic, capital markets and credit disruptions, including sovereign debt issues, pose risks to our business.

The  threat  of  global  economic,  capital  markets  and  credit  disruptions  pose  risks  to  our  business.  These  risks  include  slower  economic
activity  and  investment  in  projects  that  make  use  of  our  products  and  services.  These  economic  developments,  particularly  decreased  credit
availability, have in the past reduced demand for solar products. For instance, the European sovereign debt crisis in recent years has caused and
may continue to cause European governments to reduce, eliminate or allow to expire government subsidies and economic incentives for solar
energy, which could limit our growth or cause our net sales to decline and materially and adversely affect our business, financial condition, and
results of operations. These conditions, including reduced incentives, continued decreases in credit availability, as well as continued economic
instability, have and may continue to adversely impact our business, financial condition and results of operations as we seek to increase our sales
internationally.

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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  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 potential 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  Tax  Cuts  and  Jobs  Act  of  2017  (the  “Tax  Reform  Act”)  contained  many
significant changes to the U.S. federal income tax laws, the consequences of which could have a material impact on the value of our deferred tax
assets and 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.

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 U.S., 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.

Item 1B.    Unresolved Staff Comments

None.

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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
Global support office
Solar design services
R&D facility
Marketing and sales support
Marketing and sales support

Item 3.    Legal Proceedings

Location

Fremont, U.S.
Boise, U.S.
Petaluma, U.S.
Bengaluru, India
Noida, India
New Zealand
Australia
Netherlands

Held
Leased
Leased
Leased
Leased
Leased
Leased
Leased
Leased

Approximate Square
Footage
40,446
24,688
141,231
67,000
19,382
23,573
4,478
6,997

Lease end term
Sep-2025
Jan-2027
Aug-2032
May-2024
Mar-2026
Oct-2025
Jul-2026
Jan-2026

From  time  to  time,  we  might  be  subject  to  various  legal  proceedings  relating  to  claims  arising  out  of  our  operations.  The  outcome  of
litigation is inherently uncertain. If one or more legal matters were resolved against us in a reporting period for amounts above management’s
expectations, our business, results of operations, financial position and cash flows for that reporting period could be materially adversely affected.
Except as described in this Item 3, we are not currently involved in any material legal proceedings, the ultimate disposition of which could have a
material adverse effect on our operations, financial condition, or cash flows.

Class Action Suit

In June 2020, Gregory A. Hurst (“Plaintiff”) filed a securities class action lawsuit against our company, our chief executive officer and our
chief financial officer (collectively, the "Defendants") in the United States District Court for the Northern District of California (the “Securities Class
Action”). The  complaint  alleged  that  the  Defendants  made  false  and/or  misleading  statements  in  violation  of  Sections  10(b)  and  20(a)  of  the
Exchange Act of 1934 and Rule 10b-5 promulgated thereunder. Plaintiff did not quantify any alleged damages in his complaint but, in addition to
attorneys' fees and costs, he sought to recover damages on behalf of himself and other persons who purchased or otherwise acquired our stock
during  the  putative  class  period  at  allegedly  inflated  prices  and  purportedly  suffered  financial  harm  as  a  result.  Defendants  filed  a  motion  to
dismiss, which was granted with leave to amend. Following the Plaintiff’s Notice of Intent Not to File Amended Complaint, the Court entered a
judgment in favor of the Defendants on October 18, 2021.

Derivative Action Suit

From  July  through  October  2020,  Yan  Shen,  Benjamin  Weber,  Anthony  R.  Buch,  and  Frank  Caggiano,  each  separately  filed  a  verified
shareholder  derivative  lawsuit  in  the  United  States  District  Court  for  the  Northern  District  of  California  against  our  company  (as  nominal
defendant) and certain officers and directors alleging breaches of fiduciary duties, unjust enrichment, abuse of control, gross mismanagement,
waste, and violations of Section 14(a) under the Exchange Act of 1934 (collectively the “Derivative Actions”). The plaintiffs did not quantify any
alleged damages in their complaints, but in addition to attorneys’ fees and costs, sought certain corporate governance changes. Following the
entry of judgment in favor of the Defendants in the Securities Class Action lawsuit, the parties in the Derivative Actions stipulated to voluntarily
dismiss the Derivative Actions without prejudice, which was so ordered by the Court on December 6, 2021.

Books and Records Suit

In September 2020, Stanley Olochwoszcz filed a lawsuit against our company in the Court of Chancery of the State of Delaware pursuant
to Section 220 of the Delaware General Corporation Law, 8 Del. C. § 220, to compel the company to permit Mr. Olochwoszcz to inspect certain of
our books and records (the “Section 220 Litigation”). We also received similar demands for inspection of our books and records from four other
company stockholders (collectively, the “Demands”). Following the judgment in favor of the Defendants in the Securities Class Action lawsuit, Mr.
Olochwoszcz and the other stockholders voluntarily dismissed without prejudice the Section 220 Litigation and Demands, which was so ordered
by the Court on December 1, 2021.

Enphase Energy, Inc. | 2021 Form 10-K | 49

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Item 4.    Mine Safety Disclosures

Not applicable.

Enphase Energy, Inc. | 2021 Form 10-K | 50

Table of Contents

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  been  traded  on  The  Nasdaq  Global  Market  under  the  symbol  “ENPH”  since

PART II

March 30, 2012.

Holders

As of February 7, 2022, there were approximately 18 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

Except as previously reported in our quarterly reports on Form 10-Q and current reports on Form 8-K filed with the SEC during the year

ended December 31, 2021, there were no unregistered sales of equity securities by us during the year ended December 31, 2021.

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. During the fourth quarter of 2021, we repurchased and subsequently retired approximately 1.5 million shares
of our common stock from the open market at an average cost of $196.98 per share for a total of $300.0 million. As of December 31, 2021, 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, 2021 (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 2021
November 2021
December 2021
Total

—  $
—  $
1,523,005  $
1,523,005 

— 
— 
196.98 

—  $
—  $
1,523,005  $
1,523,005 

500,000 
500,000 
200,000 

Enphase Energy, Inc. | 2021 Form 10-K | 51

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Stock Performance Graph

This section is not “soliciting material” and is not deemed “filed” for purposes of Section 18 of the Securities and Exchange Act of 1934, as
amended (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, 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, 2017 to December 31, 2021. An investment of $100 is assumed to have been made in our
common  stock  and  in  each  index  on  December  31,  2017,  all  dividends  were  reinvested,  and  the  relative  performance  of  the  investments  are
tracked  through  December  31,  2021.  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.
S&P 500 Index
Invesco Solar ETF

Item 6.    [Reserved]

December 31,
2017

December 31,
2018

December 31,
2019

December 31,
2020

December 31,
2021

$
$
$

100 
100 
100 

$
$
$

196 
94 
74 

$
$
$

1,084 
121 
123 

$
$
$

7,281 
140 
410 

$
$
$

7,591 
178 
307 

Enphase Energy, Inc. | 2021 Form 10-K | 52

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

Forward-Looking Statements

The  following  discussion  and  analysis  of  our  financial  condition  and  results  of  operations  should  be  read  together  with  our  consolidated
financial  statements  and  related  notes  appearing  elsewhere  in  this  Annual  Report  on  Form  10-K.  This  discussion  contains  forward-looking
statements reflecting our current expectations and involves risks and uncertainties. In some cases, you can identify forward-looking statements
by terminology such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “intend,” “potential” or “continue” or the
negative of these terms or other comparable terminology. Such statements, include but are not limited to statements regarding our expectations
as  to  future  financial  performance,  expense  levels,  liquidity  sources,  the  capabilities  and  performance  of  our  technology  and  products  and
planned changes, timing of new product releases, our business strategies, including anticipated trends, growth and developments in markets in
which  we  target,  the  anticipated  market  adoption  of  our  current  and  future  products,  performance  in  operations,  including  component  supply
management,  product  quality  and  customer  service,  risks  related  to  the  ongoing  COVID-19  pandemic  and  the  anticipated  benefits  and  risks
relating to our recent acquisitions. Our actual results and the timing of events may differ materially from those discussed in our forward-looking
statements as a result of various factors, including those discussed below and those discussed in the section entitled “Risk Factors” included in
Part I, Item 1A of this Annual Report on Form 10-K.

Business Overview and 2021 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.  To  date,  we  have  shipped  more  than  42  million  microinverters,  and  approximately  1.9  million  Enphase  residential  and
commercial systems have been deployed in more than 130 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, 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  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.

Safe Harbor Prepayments

The Renewable Energy and Job Creation Act of 2008 provided a 30% federal tax credit for residential and commercial solar installations
through December 31, 2019, which was reduced to a tax credit of 26% for any solar energy system that began construction during 2020 through
December 31, 2022, and 22% thereafter to December 31, 2023 before being reduced to 10% for commercial installations and 0% for residential
installations  beginning  on  January  1,  2024.  As  a  result,  several  of  our  customers  explored  opportunities  to  purchase  products  in  2019  to  take
advantage of safe harbor guidance from the IRS published in June 2018, allowing them to preserve the historical 30% investment tax credit for
solar equipment purchased in 2019 for solar projects that are completed after December 31, 2019. Safe harbor prepayments from customers in
the fourth quarter of 2019 resulted in $44.5 million of revenue recognized in the first quarter of 2020 when we delivered the product. There was
no safe harbor revenue recognized in the years ended December 31, 2021 in comparison.

Acquisitions

On January 25, 2021, we completed the acquisition of Sofdesk Inc. (“Sofdesk”), a privately-held company. Sofdesk provides design tools
and  services  software  for  residential  solar  installers  and  roofing  companies  and  will  enhance  our  digital  transformation  efforts.  As  part  of  the
purchase  price,  we  (i)  paid  approximately  $32.0  million  in  cash  on  January  25,  2021  and  (ii)  paid  approximately  $3.7  million  of  contingent
consideration payable in the first quarter of 2022, of which we recorded a liability of approximately $3.5 million representing the fair value of the
contingent consideration on the date acquisition. In addition to the purchase price, we paid approximately $3.7 million in the first quarter of 2022,
as the continued employment condition of key employees of Sofdesk was deemed completed.

Enphase Energy, Inc. | 2021 Form 10-K | 53

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On March 31, 2021, we completed the acquisition of DIN Engineering Services LLP’s (“DIN”) 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 our digital transformation effort. As part of the purchase price, we paid approximately $24.8 million in cash. In addition to the purchase
price paid, we are 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 in one year following the acquisition date subject to achievement of certain revenue,
operational and employment targets.

On December 13, 2021, we completed the acquisition of 365 Pronto, Inc. (“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
U.S. As part of the purchase price, we paid approximately $69.9 million in cash on December 13, 2021. In addition to the purchase price paid, we
are  obligated  to  pay  up  to  approximately  $11.0  million  in  shares  of  our  common  stock  in  2023  subject  to  achievement  of  certain  revenue,
operational and employment targets.

On December 31, 2021, we completed the acquisition of ClipperCreek, Inc. (“ClipperCreek”), a privately-held company. ClipperCreek offers
electric  vehicle  (“EV”)  charging  solutions  for  residential  and  commercial  customers  in  the  U.S.  As  part  of  the  purchase  price,  we  paid
approximately  $113.1  million  in  cash  on  December  31,  2021.  [In  addition  to  the  purchase  price  paid,  we  are  obligated  to  issue  up  to
approximately  $40.0  million  in  shares  of  our  common  stock  payable  in  the  first  quarter  of  2023,  subject  to  achievement  of  certain  revenue,
operational and employment targets

Further  details  on  business  acquisitions  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.

Convertible Notes

On March 1, 2021, we issued an aggregate principal amount of $1.15 billion of convertible senior notes comprised of $575.0 million of our
0.0% convertible senior notes due 2026 (the “Notes due 2026”) and $575.0 million of our 0.0% convertible senior notes due 2028 (the “Notes due
2028”). In addition, on March 12, 2021, we issued $57.5 million aggregate principal amount of the Notes due 2026 in connection with the initial
purchasers’ full exercise of the over-allotment option to purchase additional Notes due 2026. The Notes due 2026 and Notes due 2028 will not
bear regular interest, and the principal amount of the Notes due 2026 and Notes due 2028 will not accrete. The Notes due 2026 and the Notes
due 2028 are general unsecured obligations and the Notes due 2026 and Notes due 2028 are governed by relevant indentures entered by and
between us and U.S. Bank National Association, as trustee. The Notes due 2026 will mature on March 1, 2026 and Notes due 2028 will mature
on March 1, 2028, unless earlier repurchased by us or converted at the option of the holders. Further information relating to the Notes due 2026
and Notes due 2028 may be found in Note 13. “Debt,” of the notes to consolidated financial statements included in Part II, Item 8 of this Annual
Report on Form 10-K.

During the period ended December 31, 2021, $88.1 million in aggregate principal amount of our 1.0% convertible senior notes due 2024
(the “Notes due 2024”) were converted or repurchased by us, and the principal amount of the converted and repurchased Notes due 2024 was
repaid  in  cash.  Of  the  $88.1  million  in  aggregate  principal  amount,  $25.5  million  in  aggregate  principal  amount  was  repurchased  pursuant  to
separately- and privately-negotiated exchange agreements entered into in March 2021 with certain holders of Notes due 2024 concurrently with
the  offering  of  the  Notes  due  2026  and  the  Notes  due  2028.  In  connection  with  such  conversions  or  repurchases,  during  the  year  ended
December 31, 2021, we also issued 3.8 million shares of our common stock to the holders of the converted and repurchased Notes due 2024
with an aggregate fair value of $669.5 million, representing the conversion value in excess of the principal amount of the Notes due 2024, which
were  fully  offset  by  shares  received  from  the  settlements  of  the  associated  note  hedging  arrangements.  Following  the  conversions  and
repurchases summarized above, Notes due 2024 are no longer outstanding.

During the first quarter of 2021, concurrently with the offering of the Notes due 2026 and the Notes due 2028, we entered into separately-
and privately-negotiated transactions to repurchase approximately $217.7 million in aggregate principal amount of our 0.25% convertible senior
notes due 2025 (the “Notes due 2025”). The principal amount (and for certain holders the conversion value in excess of the principal amount) of
the repurchased Notes due 2025 was repaid in cash. We also issued approximately 1.7 million shares of our 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 settlements of the associated note hedging arrangements.

Enphase Energy, Inc. | 2021 Form 10-K | 54

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Repurchases of Common Stock

In  April  2020,  our  board  of  directors  authorized  the  repurchase  of  up  to  $200.0  million  of  our  common  stock,  exclusive  of  brokerage
commissions, under the 2020 Repurchase Program. During the second quarter of 2021, we 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. 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. During the fourth quarter of 2021, we repurchased and subsequently retired approximately 1.5 million shares of common stock
from the open market at an average cost of $196.98 per share for a total of $300.0 million. As of December 31, 2021, 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.

COVID-19 Update

We  are  actively  monitoring,  evaluating,  and  responding  to  developments  relating  to  COVID-19  pandemic,  which  has  resulted  in,  and  is
expected to continue to result in substantial manufacturing or supply chain problems, disruptions in local and global economies, volatility in the
global  financial  markets,  overall  reductions  in  demand,  delays  in  payment,  restrictions  on  the  shipment  of  our  products,  or  other  ramifications.
The  extent  of  the  impact  of  COVID-19  on  our  operational  and  financial  performance  will  depend  on  developments,  including  the  duration  and
spread of the virus and its variants, impact on our end-customers’ spending, volume of sales, impact on our partners, suppliers, and employees
and actions that may be taken by governmental authorities. The global supply chain and the semiconductor industry are experiencing challenges.
We have seen supply chain challenges and logistics constraints increase, including component shortages, which have, in certain cases, caused
delays in critical components and inventory and have resulted in increased costs. We continue to work to minimize the effects from supply chain
constraints.  Given  the  dynamic  nature  of  these  circumstances,  the  full  impact  of  COVID-19  and  other  macroeconomic  factors  on  our  ongoing
business, results of operations and overall financial performance cannot be reasonably estimated at this time. 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.

Components of Consolidated Statements of Operations

Net Revenues

We primarily generate net revenues from sales of our microinverter solutions and related accessories, which include our storage systems,
our  Envoy  communications  gateway,  Enlighten  cloud-based  monitoring  service,  design  and  proposal  services,  and  proposal  and  permitting
services 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  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, amortization of capitalized software development costs related to the Company’s Enlighten service
offering  and  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.

Enphase Energy, Inc. | 2021 Form 10-K | 55

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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 U.S., 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 other than restructuring expense 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 U.S., Canada, Mexico, Europe, Australia, New Zealand, India,
Brazil,  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 2018 through 2019 (the “2018 Plan”) to
improve operational performance and reduce overall operating expenses. Under the 2018 Plan, costs included in restructuring primarily consisted
of  employee  severance  and  one-time  benefits,  workforce  reorganization  charges,  non-cash  charges  related  to  impairment  of  property  and
equipment, and the establishment of lease loss reserves. See Note 12. “Restructuring,” of the notes to consolidated financial statements included
in Part II, Item 8 of this Annual Report on Form 10-K for additional information.

Other Expense, Net

Other  expense,  net  primarily  consists  of  interest  expense,  fees  under  our  convertible  notes  and  term  loans,  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. Other expense, net also includes interest income on our cash, cash equivalents and marketable securities, amortization
of discount or premium on purchase of cash equivalents and marketable securities, accrued interest on marketable securities, tariffs previously
paid and approved for refund, and gains or losses upon conversion of foreign currency transactions into U.S. dollars.

Enphase Energy, Inc. | 2021 Form 10-K | 56

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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
U.S. because we have sold the majority of our products to customers in the U.S. As we have expanded the sale of products to customers outside
the  U.S.,  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. During the fourth quarter of fiscal year 2019, after considering these factors, we determined that the positive
evidence overcame any negative evidence, primarily due to cumulative income in recent years, and the expectation of sustained profitability in
future periods and concluded that it was more likely than not that the US federal and state deferred tax assets were realizable. As a result, we
released the valuation allowance against all of the U.S. federal and state deferred tax assets during the fourth quarter of fiscal year 2019.

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 expense, net

Income before income taxes
Income tax benefit

Net income

2021

Years Ended December 31,
2020

2019

$

$

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

774,425  $
428,444 
345,981 

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  $

624,333 
403,088 
221,245 

40,381 
36,728 
38,808 
2,599 
118,516 
102,729 

2,513 
(9,691)
(5,437)
— 
— 
(12,615)
90,114 
71,034 
161,148 

Enphase Energy, Inc. | 2021 Form 10-K | 57

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Results of Operations

Net Revenues

Years Ended December 31,
2020
2021

Change in

$

%

(In thousands, except percentages)

Net revenues

$

1,382,049  $

774,425  $

607,624 

78  %

Net revenues increased by 78% or $607.6 million for the year ended December 31, 2021, as compared to the same period in 2020, driven
primarily by a 53% increase in microinverter units volume shipped and a 351% increase in Enphase IQ Battery storage systems MWh shipped. In
the  year  ended  December  31,  2021,  consumer  demand  improved  from  the  same  period  in  2020  as  we  sold  approximately  10.4  million
microinverter units in the year ended December 31, 2021, as compared to approximately 6.8 million units in the year ended December 31, 2020.
We  also  increased  shipments  of  our  Enphase  IQ  Battery  storage  systems  to  customers  in  the  U.S.  and  Europe  from  56  MWh  in  2020  to  251
MWh  in  2021  with  over  1,300  installers  now  deploying  our  Enphase  IQ  Battery  storage  systems  in  the  U.S.  Business  growth  in  the  U.S.  and
international regions resulted in a 74% and 100%, respectively, increase in net revenues in the year ended December 31, 2021, as compared to
the same period in 2020. The increase in net revenues is also due to favorable product mix as we sold more IQ7+™ microinverters relative to
solar microinverters in the fourth quarter of 2021. The average selling price of
IQ7™ microinverters, and we made initial shipments of our IQ8
our  microinverter  products  increased  in  the  year  ended  December  31,  2021,  as  compared  to  the  same  period  in  2020,  primarily  driven  by
customer mix and we increased prices to partially offset the impact of higher expedited freight costs and component costs.

TM 

Cost of Revenues and Gross Margin

Cost of revenues
Gross profit
Gross margin

Years Ended December 31,
2020
2021

Change in

$

%

(In thousands, except percentages)

$
$

827,627 
554,422 

$
$

40.1 %

428,444 
345,981 

$
$

44.7 %

399,183 
208,441 

93 %
60 %
(4.6)%

Cost  of  revenues  increased  by  93%  or  $399.2  million  in  the  year  ended  December  31,  2021,  as  compared  to  the  same  period  in  2020,
primarily due to higher volume of microinverter units sold, higher shipments of our Enphase IQ Battery storage systems, higher expedited freight
costs as a result of the COVID-19 pandemic globally in combination with semiconductor supply constraints, higher costs of certain components
experiencing  supply  constraints,  $8.5  million  higher  warranty  expense  based  on  continuing  analysis  of  field  performance  data  and  diagnostic
root-cause failure analysis primarily relating to our prior generation products as well as higher costs of certain components experiencing supply
constraints, and $38.9 million in refunds approved for tariffs previously paid on certain microinverter products and recorded as a reduction to our
cost of revenues in the year ended December 31, 2020.

Gross  margin  decreased  by  4.6  percentage  points  for  the  year  ended  December  31,  2021,  as  compared  to  the  same  period  in  2020.
The decrease in gross margin was primarily attributable to the $38.9 million in refunds approved for tariffs in the year ended December 31, 2020
mentioned above, higher expedited freight costs and increased component costs due to global supply constraints in the year ended December
31, 2021, partially offset by the increase in average selling price due to changes in product, customer mix and price increases, as well as cost
management efforts, including the transition of our contract manufacturing from China to Mexico and India to mitigate tariffs.

Enphase Energy, Inc. | 2021 Form 10-K | 58

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Research and Development

Research and development
Percentage of net revenues

Years Ended December 31,
2020
2021

Change in

$

%

(In thousands, except percentages)

$

105,526 

$

55,921 

$

49,605 

89 %

8 %

7 %

Research and development expense increased by 89% or $49.6 million in the year ended December 31, 2021, as compared to the same
period in 2020. The increase was due to $41.9 million of higher personnel-related expenses and $7.7 million of outside consulting services and
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  hiring  and  retention  programs  for  employees  in  New  Zealand,  India  and  the  U.S.  as  well  as
onboarded employees through our recent acquisitions, increasing 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.

Sales and Marketing

Sales and marketing
Percentage of net revenues

Years Ended December 31,
2020
2021

Change in

$

%

(In thousands, except percentages)

$

128,974 

$

52,927 

$

76,047 

144 %

9 %

7 %

Sales and marketing expense increased by 144% or $76.0 million in the year ended December 31, 2021, as compared to the same period
in 2020. The increase was primarily due to $52.0 million of higher personnel-related expenses primarily due to hiring employees as a result of our
efforts to improve customer experience, to provide 24/7 support along with field service desk for installers, and Enphase system owners globally,
and to support our business growth in the U.S. and international expansion in Europe as well as retention programs for employees increasing
total compensation costs, including stock-based compensation. The increase in sales and marketing expense in the year ended December 31,
2021,  as  compared  to  the  year  ended  December  31,  2020  is  also  attributable  to  $24.0  million  for  a  combination  of  higher  advertising  costs,
marketing expenses, professional services associated with our product launch and facility costs to enable business growth.

General and Administrative

General and administrative
Percentage of net revenues

Years Ended December 31,
2020
2021

Change in

$

%

(In thousands, except percentages)

$

104,090 

$

50,694 

$

53,396 

105 %

8 %

7 %

General and administrative expense increased by 105% or $53.4 million in the year ended December 31, 2021, as compared to the same
period  in  2020.  The  increase  was  primarily  due  to  $35.5  million  of  higher  personnel-related  expenses  primarily  due  to  hiring  and  retention
programs for employees increasing total compensation costs, including stock-based compensation and post business combination employment-
related  expense,  $4.9  million  of  acquisition  related  costs,  $7.8  million  of  investments  in  technological  infrastructure  and  other  operational  and
facilities costs to support scalability of our business growth and $5.2 million of higher legal and professional services.

Enphase Energy, Inc. | 2021 Form 10-K | 59

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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 expense, net

Years Ended December 31,
2020
2021

Change in

$

%

(In thousands, except percentages)

$

$

695  $

2,156  $

(45,152)

6,050 
(56,497)

— 
(94,904) $

(21,001)

(799)
(3,037)

(44,348)
(67,029) $

(1,461)
(24,151)

6,849 
(53,460)

44,348 
(27,875)

(68)%
115 %

(857)%
1,760 %

(100)%

42 %

Interest  income  of  $0.7  million  for  the  year  ended  December  31,  2021  decreased,  as  compared  to  $2.2  million  for  the  year  ended
December  31,  2020,  primarily  due  to  significant  decline  in  interest  rates  earned  on  cash,  cash  equivalents  and  marketable  securities,  and
approximately  $0.6  million  accrued  interest  on  refunds  for  tariffs  previously  paid  from  September  24,  2018  to  March  31,  2020  for  certain
microinverters that qualify for the Tariff Exclusion that was recognized in 2020, partially offset by a higher average cash, cash equivalents and
marketable securities earning interest in the year ended December 31, 2021, compared to the same period in 2020.

Cash interest expense

Cash interest expense for the year ended December 31, 2021 and 2020 totaled $0.7 million and $2.2 million, respectively. Cash interest
expense in the year ended December 31, 2021 primarily includes $0.5 million coupon interest incurred with the Notes due 2025, the Notes due
2024 and Notes due 2023 and $0.2 million accretion of interest expense on contingent consideration for an acquisition. Cash interest expense in
the year ended December 31, 2020 primarily includes $2.1 million coupon interest incurred with the Notes due 2025, Notes due 2024 and Notes
due 2023.

Non-cash interest expense

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  our  Notes  due  2024,  Notes  due  2025,  Notes  due  2026  and  Notes  due  2028  and  less  than  $0.1
million relates to the amortization of debt issuance costs associated with Notes due 2023.

Non-cash interest expense of $18.8 million for the year ended December 31, 2020 primarily includes $18.3 million related to the accretion
of the debt discount and amortization of debt issuance cost incurred associated with the Notes due 2025 and Notes due 2024, and less than $0.1
million  related  to  the  amortization  of  debt  issuance  costs  associated  with  Notes  due  2023,  and  $0.5  million  related  to  long-term  financing
receivable recorded as debt.

Other (expense) income, net of $6.1 million income for the year ended December 31, 2021 relates to a $6.6 million cash gain related to a
settlement of debt securities and $3.0 million non-cash gain related to change in the fair value of debt securities, partially offset by a $3.5 million
net  loss  related  to  foreign  currency  exchange  and  remeasurement.  Other  (expense)  income,  net  of  $0.8  million  expense  for  the  year  ended
December 31, 2020, relates to the net loss from foreign currency exchange and remeasurement.

Loss on partial settlement of convertible notes recorded in the year ended December 31, 2021 primarily relates to the $9.6 million non-cash
loss on partial settlement of $88.1 million aggregate principal amount of the Notes due 2024, $9.5 million non-cash loss on partial settlement of
$217.8 million aggregate principal amount of the Notes due 2025 and $37.5 million non-cash inducement loss incurred on repurchase of Notes
due 2025. See Note 13. “Debt,” of the notes to consolidated financial statements included in Part I, Item 8 of this Annual Report on Form 10-K for
additional information.

Change  in  fair  value  of  derivatives  associated  with  issuance  of  Notes  due  2025  of  $44.3  million  for  the  year  ended  December  31,  2020
primarily includes the charge recognized for the change in fair value of our convertible notes embedded derivative and warrants of $47.6 million
and $24.7 million, respectively. This charge is partially offset by a gain recognized for the change in fair value of our convertible notes hedge of
$28.0 million. We did not have any derivatives transactions during the year ended December 31, 2021.

Enphase Energy, Inc. | 2021 Form 10-K | 60

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Income Tax Benefit

Income tax benefit

$

24,521  $

14,585  $

9,936 

68 %

The  income  tax  benefit  of  $24.5  million  for  the  year  ended  December  31,  2021  increased,  compared  to  the  income  tax  benefit  of  $14.6
million for the same period in 2020, both calculated using the annualized effective tax rate method, primarily due to higher tax deduction from
employee stock-based compensation, partially offset by higher projected tax expense in U.S. and foreign jurisdictions that are more profitable in
2021 compared to 2020.

Years Ended December 31,
2020
2021

Change in

$

%

(In thousands, except percentages)

Liquidity and Capital Resources

Sources of Liquidity

As of December 31, 2021, we had $1.0 billion in working capital, including cash, cash equivalents and marketable securities of $1.0 billion,
of  which  approximately  $1.0  billion  were  held  in  the  U.S.  Our  cash,  cash  equivalents  and  marketable  securities  primarily  consist  of
U.S. government money market mutual funds, U.S. Treasuries, 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 U.S. to be accessible and have provided
for the estimated U.S. income tax liability associated with our foreign earnings.

Years Ended December 31,
2020
2021

Change in

$

%

(In thousands, except percentages)

Cash, cash equivalents, and marketable securities
Total Debt

$

1,016,651  $
1,037,646 

679,379  $
330,865 

337,272 
706,781 

50 %
214 %

We believe we have sufficient sources of funding to meet our business requirements for the next 12 months and in the longer term. Our
cash,  cash  equivalents  and  marketable  securities  increased  by  $337.3  million  in  the  year  ended  December  31,  2021  primarily  due  to  cash
generated  from  operations  and  issuance  of  Notes  due  2026  and  Notes  due  2028,  partially  offset  by  acquisitions,  the  repurchase  of  common
stocks, purchases of property and equipment, repayment of Notes due 2024 and partial repayment of Notes due 2025.

Total carrying amount of debt increased by $706.8 million, primarily due to issuance of an aggregate principal amount of $632.5 million of
Notes due 2026 and aggregate principal amount of $575.0 million of Notes due 2028 during the year ended December 31, 2021, partially offset
by $217.7 million in aggregate principal amount of Notes due 2025 repurchased and repaid in cash, and settlement of remaining $88.1 million in
aggregate principal amount of Notes due 2024.

We expect that our principal short-term (over the next 12 months) and long-term needs for cash relating to our operations will be to fund
operating  activities  and  working  capital,  acquisitions,  and  purchase  of  property  and  equipment,  such  as  production  lines  at  our  contract
manufacturing partners.

We plan to fund such cash requirements from our existing cash, cash equivalents and marketable securities on hand, and cash generated
from  operations.  We  anticipate  that  our  future  capital  needs  from  the  debt  market  will  be  more  limited  compared  to  prior  years.  Our  ability  to
obtain this or any additional financing that we may choose to, or need to, obtain will 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.

Enphase Energy, Inc. | 2021 Form 10-K | 61

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Repurchase  of  Common  Stock.  During the  second  quarter  of  2021,  we  repurchased  and  subsequently  retired  1.7  million  shares  of  our
common stock for an aggregate amount of $200.0 million. In May 2021, our board of directors authorized the repurchase of up to an additional
$500.0 million of our common stock. During the fourth quarter of 2021, we repurchased and subsequently retired approximately 1.5 million shares
of common stock from the open market at an average cost of $196.98 per share for a total of $300.0 million. As of December 31, 2021, we have
approximately $200.0 million remaining for repurchase of shares under the 2021 Repurchase Program. The repurchases 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. See Note 15. “Stockholders’ Equity,” of the notes to consolidated financial statements included
in Part II, Item 8 of this Annual Report on Form 10-K for additional information.

Contractual Obligations

The following table summarizes material cash requirements from known outstanding contractual obligations as of December 31, 2021:

(1)

Operating leases 
Notes due 2023 principal and interest 
Notes due 2025 principal and interest 
Notes due 2026 principal and interest 
Notes due 2028 principal and interest 
Purchase obligations 

(3)

(2)

(2)

(2)

(2)

Total

Total

Payments Due by Period
Next 12 Months
(In thousands)

Beyond 12 Months

$

$

18,626  $
5,400 
103,071 
632,500 
575,000 
424,629 
1,759,226  $

4,771  $
200 
256 
— 
— 
424,629 
429,856  $

13,855 
5,200 
102,815 
632,500 
575,000 
— 
1,329,370 

(1) See Note 14.  “Commitment  and  Contingencies”  of  the  notes  to  consolidated  financial  statement  for  further  details  regarding  leases.  As  of
December 31, 2021, the Company has additional operating lease for real estate that have not yet commenced of $5.6 million which have not
been included above.

(2) See Note 13. “Debt,” of the notes to consolidated financial statements for further details regarding debt.

(3) Purchase  obligations  include  amounts  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 from operations could be affected by various risks and uncertainties, including, but not limited to, the effects of COVID-19 and other
risk  factors  discussed  in  the  section  entitled  “Risk  Factors”  included  in  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 at least the
next 12 months and thereafter for the foreseeable future. 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 COVID-19. 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.

Enphase Energy, Inc. | 2021 Form 10-K | 62

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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 financing activities
Effect of exchange rate changes on cash

Net increase (decrease) in cash and cash equivalents

Cash Flows from Operating Activities

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

352,028  $

(1,219,547)
309,411 
(1,955)
(560,063) $

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

139,067 
(14,788)
65,850 
(257)
189,872 

Cash  flows  from  operating  activities  consist  of  our  net  income  adjusted  for  certain  non-cash  reconciling  items,  such  as  stock-based
compensation expense, change in the fair value of investments, deferred income taxes, loss on conversion of Notes due 2024 and Notes due
2025, depreciation and amortization, adjustment to reclass cash gain on settlement of debt securities to investing activities and changes in our
operating assets and liabilities. Net cash provided by operating activities increased by approximately $135.7 million for the year ended December
31, 2021 compared to the same period in 2020, 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 and also by $15.7 million deemed cash repayment
attributable  to  accreted  debt  discount  as  an  amount  paid  for  settlement  of  approximately  $88.1  million  and  approximately  $217.8  million  in
aggregate principal amount of the Notes due 2024 and Notes due 2025, respectively.

Cash Flows from Investing Activities

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

For the year ended December 31, 2020, net cash used in investing activities was approximately $20.6 million, primarily from purchases of
test  and  assembly  equipment  to  expand  our  supply  capacity,  related  facility  improvements  and  information  technology  enhancements  and
capitalized costs related to internal-use software and $5.0 million payment related to the equity investment in a private company.

Cash Flows from Financing Activities

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

For  the  year  ended  December  31,  2020  net  cash  provided  by  financing  activities  of  approximately  $191.7  million  was  primarily  from
approximately $312.4 million net proceeds from the issuance of our Notes due 2025, $71.6 million from sale of warrants related to our Notes due
2025,  $8.4  million  net  proceeds  from  employee  stock  option  exercises  and  issuance  of  common  stock  under  our  employee  stock  incentive
program,  partially  offset  by  $89.1  million  purchase  of  convertible  note  bond  hedge  related  to  our  Notes  due  2025,  $68.3  million  payment  of
employee  withholding  taxes  related  to  net  share  settlement  of  equity  awards,  $40.7  million  settlement  of  $43.9  million  in  aggregate  principal
amount of the Notes due 2024 and $2.6 million of repayment on sale of long-term financing receivables.

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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  Securities  and  Exchange  Commission  ("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. 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  Envoy  communications
gateway, the cloud-based Enlighten monitoring service, storage solutions, Electric Vehicle (“EV”) charging solutions beginning in the first quarter
of 2022, design, proposal and permitting 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, an Envoy communications gateway and Enlighten service, communications accessories, storage solutions, EV charging
solutions  beginning  in  the  first  quarter  of  2022,  design,  proposal  and  permitting  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 and permitting 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 Envoy communications 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  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 three to twelve 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 Envoy,

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 recognizes 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 our sale of monitoring hardware and service are capitalized and amortized over the period of the associated
revenue.

See 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 Notes due 2025. Concurrently with the issuance of 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 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 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 be 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,  2020,  we  do  not  have  any
convertible  note  derivatives.  See  Note 13.  “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

Microinverters and Other Products Sold Through December 31, 2013

Our warranty accrual provides for the replacement of microinverter units or other products that fail during the product’s warranty term (15
years  for  first  and  second  generation  microinverters  and  up  to  25  years  for  subsequent  generation  microinverters).  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 over time (i.e., failure rate); (2) the number
of failed units expected to result in warranty claims over time (i.e., claim rate); and (3) 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 Failure Rates — Our Quality and Reliability department has primary responsibility to determine the estimated failure rates for
each  generation  of  microinverter.  To  establish  initial  failure  rate  estimates  for  each  generation  of  microinverter,  our  quality  engineers  use  a
combination  of  industry  standard  Mean  Time  Between  Failure  (“MTBF”)  estimates  for  individual  components  contained  in  that  generation  of
microinverters, third party data collected on similar equipment deployed in outdoor environments similar to those in which our microinverters are
installed, and rigorous long term reliability and accelerated life cycle testing which simulates the service life of the microinverter 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 microinverter 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.

Estimated  Claim  Rates  —  Warranty  claim  rate  estimates  are  based  upon  observed  historical  trends  and  assumptions  with  respect  to
expected  customer  behavior  over  the  warranty  period.  As  the  vast  majority  of  our  microinverters  have  been  sold  to  end  users  for  residential
applications, we believe that warranty claim rates will be affected by changes over time in residential home ownership because we expect that
subsequent homeowners are less likely to file claims 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 microinverters; (2) the estimated cost to ship replacement microinverters 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 microinverters over long periods of time (typically between 15 and 25 years, depending on the generation of 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 microinverter 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
failure rates, claim 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.

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

Our warranty obligations related to microinverters 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 (“ASC 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 microinverters 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.

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 failure rates, claim 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. See 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.  See  Note  14.  “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.

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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.

We  operate  in  various  tax  jurisdictions  and  is  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

Market Risk

On  March  9,  2020,  we  issued  $320.0  million  aggregate  principal  amount  of  the  Notes  due  2025,  and  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 and to effectively increase the overall conversion price from $81.54 to $106.94 per share. For the period from March 9, 2020
through May 19, 2020, the Notes due 2025, convertible note hedge and warrant transactions could only be settled in cash because the number of
authorized and unissued shares of our common stock that was not reserved for other purposes was less than the maximum number of underlying
shares  that  would  be  required  to  settle  the  Notes  due  2025,  convertible  note  hedge  and  warrants  transactions.  As  such,  the  embedded
conversion option associated with the Notes due 2025, convertible notes hedge and warrants liability met the criteria for derivative accounting,
and as a result, derivative financial instruments were marked-to-market at each reporting period. The volatile market conditions arising from the
COVID-19 pandemic resulted in significant changes in the price of our common stock in the first half of 2020, causing variability in the fair value
of  these  derivative  financial  instruments,  and  materially  affecting  our  consolidated  statement  of  operations  for  the  year  ended  December  31,
2021. Change in fair value of derivatives of $44.3 million for the year ended December 31, 2020 includes the charge recognized for the change in
fair  value  of  our  convertible  notes  embedded  derivative  and  warrants  of  $47.6  million  and  $24.7  million,  respectively,  partially  offset  by  a  gain
recognized for the change in fair value of our convertible notes hedge of $28.0 million.

On May 20, 2020, we received approval at our annual meeting of stockholders to increase the authorized shares of our common stock, par
value $0.00001 per share, from 150,000,000 shares to 200,000,000 shares. As discussed further in Note 13. “Debt,” of the notes to consolidated
financial  statements  included  in  Part  II,  Item  8  of  this  Annual  Report  on  Form  10-K,  we  reclassified  the  remeasured  fair  value  of  embedded
derivative, warrants and convertible notes hedge to additional paid-in-capital in the consolidated balance sheet in the second quarter of 2020. As
a result of this reclassification, embedded derivative, warrants and convertible notes hedge are no longer marked to fair value at each reporting
period.

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, Indian
Rupee  and  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.

The effect of a hypothetical 10% adverse change in foreign exchange rates on monetary assets and liabilities at December 31, 2021 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 2021 and 2020. Any foreign currency forward contracts entered in the

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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  $1,016.7  million  and  $679.4  million  as  of  December  31,  2021  and  2020,
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.  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  rates  and  fluctuations  in  general  economic
conditions. In the year ended December 31, 2021, we recognized a $56.5 million non-cash loss on settlement of approximately $88.1 million and
$217.7  million  in  aggregate  principal  amount  of  the  Notes  due  2024  and  Notes  due  2025  respectively,  as  a  result  of  the  change  in  fair  value.
Based upon the quoted market price as of December 31, 2021, the fair value of our Notes due 2025 was approximately $240.0 million. Notes due
2023 are not actively traded and Notes due 2024 are no longer outstanding.

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, 2021 AND 2020,

AND FOR THE YEARS ENDED DECEMBER 31, 2021, 2020 AND 2019

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
71
75
76
77
78
80
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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, 2021 and 2020, 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, 2021, 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, 2021 and
2020, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2021, 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,  2021,  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 11, 2022,
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  matters  communicated  below  are  matters  arising  from  the  current-period  audit  of  the  financial  statements  that  were
communicated  or  required  to  be  communicated  to  the  audit  committee  and  that  (1)  relate  to  accounts  or  disclosures  that  are  material  to  the
financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters
does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters
below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

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 over time (i.e., failure rate); (2) the number of failed units expected to result in warranty claims
over time (i.e., claim rate); and (3) the per unit cost of replacement units (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  3
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.

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Given the subjectivity of estimating the projected failure rates and warranty claims, performing audit procedures to evaluate whether the
expected  failure  rates  were  appropriately  determined  as  of  December  31,  2021,  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  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 rates

• We  evaluated  the  methods  and  assumptions  used  by  management  to  estimate  the  failure  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 rate analysis, which include historical claims and
historical  product  sales,  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 claims 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 rates for product families by utilizing data analytics and compared them to

management assumptions.

Valuation of Intangibles related to Business Acquisitions – Refer Note 6 to the consolidated financial statements

Critical Audit Matter Description

The  Company  completed  in  December  2021  two  acquisitions  (“December  acquisitions”)  with  a  net  purchase  consideration  of  $183.1

million. These transactions were accounted for as business combinations.

Auditing the accounting for the December acquisitions was complex due to the estimation uncertainty in the Company’s determination of
the  fair  value  of  the  intangibles  acquired,  which  primarily  included  trade  names  and  developed  technology.  The  estimation  uncertainty  was
primarily due to the sensitivity of the respective fair values to the underlying significant assumptions. The fair value estimates of the trade names
and  developed  technology  intangible  assets  included  significant  assumptions  in  the  prospective  financial  information,  including  estimated
weighted average cost of capital, royalty rates and estimated revenue growth rates. These significant assumptions are forward looking and could
be affected by expectations about future economic and market conditions.

How the Critical Audit Matter Was Addressed in the Audit

Our  audit  procedures  related  to  the  valuation  of  intangible  assets  related  to  the  December  acquisitions  included  the  following,  among

others:

• We tested the effectiveness of controls over the estimation process supporting the fair value estimates of the trade names and developed

technology intangible assets, including management’s review of the significant assumptions.

• We evaluated the methods and assumptions used by management to estimate the valuation of intangible assets by:

– Evaluating  the  Company's  selection  of  the  valuation  methodologies,  testing  the  significant  assumptions  and  the  completeness

and accuracy of the underlying data.

– Comparing significant assumptions in the prospective financial information to current industry trends, as well as to the historical

performance of the acquired business and a similar business segment of the Company.

– Performing benchmarking approach for similar technology and performed inquiries with management to corroborate assumptions

around useful life of intangibles.

Enphase Energy, Inc. | 2021 Form 10-K | 72

Table of Contents

– Performing  sensitivity  analyses  to  evaluate  the  changes  in  the  fair  value  of  the  intangible  assets  that  would  result  from  the

changes in significant assumptions.

– Engaging  internal  valuation  specialists  to  assist  with  our  evaluation  of  the  methodologies  used  by  the  Company  and  the
evaluation  of  the  discount  rates  by  comparing  them  against  discount  rate  ranges  that  were  independently  developed  using
publicly available market data for comparable entities.

/s/ DELOITTE & TOUCHE LLP

San Francisco, California

February 11, 2022

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,
2021, 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, 2021, 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,  2021,  of  the  Company  and  our  report  dated  February  11,  2022
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 11, 2022

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ENPHASE ENERGY, INC.

CONSOLIDATED BALANCE SHEETS
(In thousands, except par value)

Current assets:

ASSETS

Cash and cash equivalents
Marketable securities
Accounts receivable, net of allowances of $1,590 and $462 at December 31, 2021 and December 31, 2020,
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

Current liabilities:

LIABILITIES AND STOCKHOLDERS’ EQUITY

Accounts payable
Accrued liabilities
Deferred revenues, current
Warranty obligations, current (includes $14,612 and $8,267 measured at fair value at December 31, 2021 and
December 31, 2020, respectively)
Debt, current

Total current liabilities

Long-term liabilities:

Deferred revenues, non-current
Warranty obligations, non-current (includes $36,395 and $20,469 measured at fair value at December 31, 2021
and December 31, 2020, respectively)
Other liabilities
Debt, non-current
Total liabilities

Commitments and contingencies (Note 14)
Stockholders’ equity:

Common stock, $0.00001 par value, 300,000 shares and 200,000 shares authorized; and 133,894 shares and
128,962 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively
Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive income (loss)

Total stockholders’ equity

Total liabilities and stockholders’ equity

As of

December 31,
2021

December 31,
2020

$

$

$

$

119,316  $
897,335 

333,626 
74,400 
37,784 
1,462,461 
82,167 
14,420 
97,758 
181,254 
118,726 
122,470 
2,079,256  $

113,767  $
157,912 
62,670 

19,395 
86,052 
439,796 

187,186 

53,982 
16,530 
951,594 
1,649,088 

1 
837,924 
(405,737)
(2,020)
430,168 
2,079,256  $

679,379 
— 

182,165 
41,764 
29,756 
933,064 
42,985 
17,683 
28,808 
24,783 
59,875 
92,904 
1,200,102 

72,609 
76,542 
47,665 

11,260 
325,967 
534,043 

125,473 

34,653 
17,042 
4,898 
716,109 

1 
534,744 
(51,186)
434 
483,993 
1,200,102 

See Notes to Consolidated Financial Statements.

Enphase Energy, Inc. | 2021 Form 10-K | 75

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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 expense, net

Income before income taxes
Income tax benefit

Net income
Net income per share:

Basic

Diluted

Shares used in per share calculation:

Basic

Diluted

ENPHASE ENERGY, INC.

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

2021

Years Ended December 31,
2020

2019

$

$

$

$

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

774,425  $
428,444 
345,981 

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  $

1.09  $

1.02  $

134,025 

142,878 

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  $

1.07  $

0.95  $

125,561 

141,918 

624,333 
403,088 
221,245 

40,381 
36,728 
38,808 
2,599 
118,516 
102,729 

2,513 
(9,691)
(5,437)
— 
— 
(12,615)
90,114 
71,034 
161,148 

1.38 

1.23 

116,713 

131,644 

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

2021

Years Ended December 31,
2020

2019

$

145,449  $

133,995  $

161,148 

(334)

1,357 

(1,665)

Change in net unrealized loss
Less: reclassification adjustment for net losses included in net income

Net change, net of income tax benefit of $745

Comprehensive income

(2,120)
— 
(2,120)
142,995  $

— 
— 
— 

135,352  $

— 
— 
— 
159,483 

$

See Notes to Consolidated Financial Statements.

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ENPHASE ENERGY, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands)

Common Stock

Shares
107,035  $

Amount

Additional
Paid-In 
Capital

Accumulated
Deficit

Accumulated
Other
Comprehensive
Income (Loss)

Total
Stockholders’
Equity

1  $

353,335  $

(346,302) $

742  $

7,776 

Balance at December 31, 2018

Cumulative-effect adjustment to accumulated

deficit related to the adoption of ASU 2018-07

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
Settlement of convertible senior notes
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

Stock-based compensation
Net income
Foreign currency translation adjustments

— 

5,273 

— 
10,801 

— 

— 

— 
— 
— 
— 

Balance at December 31, 2019

123,109  $

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 

— 
— 
— 
— 

Balance at December 31, 2020

128,962  $

— 

— 

— 
— 

— 

— 

— 
— 
— 
— 
1  $

— 

— 

— 

— 

— 

— 
— 

— 

— 

— 
— 
— 
— 
1  $

27 

(27)

4,985 

(8,198)
58,857 

35,387 

(36,313)

29,818 
20,417 
— 
— 

— 

— 
— 

— 

— 

— 
— 
161,148 
— 

— 

— 

— 
— 

— 

— 

— 
— 
— 
(1,665)

458,315  $

(185,181) $

(923) $

8,395 

(68,330)

116,502 

(117,108)

96,351 

(306,220)
301,015 

— 

— 

3,321 
42,503 
— 
— 

534,744  $

— 

— 

— 

— 

— 

— 
— 

— 

— 

— 

— 

— 

— 

— 

— 
— 

— 

— 

— 
— 
133,995 
— 
(51,186) $

— 
— 
— 
1,357 

434  $

— 

4,985 

(8,198)
58,857 

35,387 

(36,313)

29,818 
20,417 
161,148 
(1,665)
272,212 

8,395 

(68,330)

116,502 

(117,108)

96,351 

(306,220)
301,015 

— 

— 

3,321 
42,503 
133,995 
1,357 
483,993 

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Common Stock

Shares

Amount

Additional
Paid-In 
Capital

Accumulated
Deficit

Accumulated
Other
Comprehensive
Income (Loss)

Total
Stockholders’
Equity

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

2,808 

— 

— 

— 

— 

— 
5,489 

(5,721)

5,582 
— 
— 
(3,226)
— 

— 

Balance at December 31, 2021

133,894  $

— 

— 

— 

— 

— 

— 
— 

— 

— 
— 
— 
— 
— 

7,484 

(29,136)

207,970 

(213,322)

220,800 

(976,714)
972,273 

— 

— 
113,825 
— 
— 
— 

— 

— 

— 

— 

— 

— 
— 

— 

— 
— 
145,449 
(500,000)
— 

— 

— 

— 

— 

— 

— 
— 

— 

— 
— 
— 
— 
(334)

— 
1  $

— 

— 

837,924  $

(405,737) $

(2,120)
(2,020) $

7,484 

(29,136)

207,970 

(213,322)

220,800 

(976,714)
972,273 

— 

— 
113,825 
145,449 
(500,000)
(334)

(2,120)
430,168 

See Notes to Consolidated Financial Statements.

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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
Provision for doubtful accounts
Asset impairment
Non-cash interest expense
Financing fees on extinguishment of debt
Fees paid for repurchase and exchange of convertible notes due 2023
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
Fees paid for repurchase and exchange of convertible notes due 2023
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 financing activities

2021

Years Ended December 31,
2020

2019

$

145,449  $

133,995 

161,148 

32,439 
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)
7,484 
(500,000)
(29,136)
309,411 

18,103 
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)
8,395 
— 
(68,330)
191,678 

14,119 
217 
1,124 
6,081 
2,152 
6,000 
— 
— 
— 
— 
20,176 
— 
(73,375)

(68,745)
(15,789)
(14,293)
22,200 
5,804 
72,248 
139,067 

(14,788)
— 
— 
— 
— 
— 
— 
(14,788)

127,413 
(36,313)
29,818 
(6,000)
(45,855)
— 
4,985 
— 
(8,198)
65,850 

Enphase Energy, Inc. | 2021 Form 10-K | 80

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Effect of exchange rate changes on cash and cash equivalents
Net increase (decrease) in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash—Beginning of period

Cash, cash equivalents and restricted cash—End of period
Reconciliation of cash, cash equivalents, and restricted cash to the consolidated
balance sheets
Cash and cash equivalents
Restricted cash

Total cash, cash equivalents, and restricted cash

Supplemental cash flow disclosure:

Cash paid for interest
Cash paid for income taxes

Supplemental disclosures of non-cash investing and financing activities:

Purchases of fixed assets included in accounts payable
Contingent consideration in connection with the acquisition
Accrued interest payable unpaid upon exchange of convertible notes due 2023

2021

Years Ended December 31,
2020

2019

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

826 
383,270 
296,109 
679,379  $

119,316 
— 

679,379 
— 

119,316  $

679,379  $

733  $
4,823  $

7,498  $
3,500  $
—  $

1,875  $
3,452  $

3,630  $
—  $
—  $

$

$

$
$

$
$
$

(257)
189,872 
106,237 
296,109 

251,409 
44,700 
296,109 

2,689 
1,755 

672 
— 
833 

See Notes to Consolidated Financial Statements.

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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 (“U.S.”), or 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, legal contingencies, and tax valuation allowance. 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, and the evolving COVID-19 pandemic.

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  Envoy
communications gateway, the cloud-based Enlighten monitoring service, storage solutions, Electric Vehicle (“EV”) charging solutions beginning in
the  first  quarter  of  2022,  design,  proposal  and  permitting  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 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,  an  Envoy  communications  gateway  and  Enlighten  service,  communications  accessories,  storage
solutions, EV charging solutions beginning in the first quarter of 2022, design, proposal and permitting 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 and permitting 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

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

professional services to the customer, which is generally upon product shipment or service delivery, respectively.

•

Products  Delivered  Over  Time.  The  sale  of  an  Envoy  communications  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 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 three to twelve 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 Envoy, 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 years.

See 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,  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.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 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 $2.1 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, 2021.

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  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 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  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 a 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,  2021  and  2020,  the  Company  does  not  have  any
convertible note derivatives. See Note 13. “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 reduction in revenue
Write-offs, net of recoveries

Balance, at end of year

Inventory

2021

December 31,
2020
(In thousands)

$

$

462  $

1,140 
(12)
1,590  $

564  $
425 
(527)
462  $

2019

2,138 
217 
(1,791)
564 

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.

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
sheet and is amortized over the length of the service contract.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Property,  plant  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 (asset
group)  may  not  be  recoverable.  An  impairment  loss  would  be  recognized  when  the  carrying  amount  of  an  asset  exceeds  the  estimated
undiscounted future cash flows expected to result from the use of the asset and its eventual disposition. 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. The Company recorded asset impairment charges for specific assets that were no longer in use of approximately zero, zero and
$1.1 million for the years ended 2021, 2020 and 2019, respectively. 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, we determine that it is more likely than not that the fair value of our 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 our reporting unit exceeds its carrying value. Accordingly, there was no indication of impairment in the years ended 2021,
2020 and 2019 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  (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.

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Contract Liabilities

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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.

Warranty Obligations

Microinverters and Other Products Sold Through December 31, 2013

The  Company’s  warranty  accrual  provides  for  the  replacement  of  microinverter  units  or  other  products  that  fail  during  the  product’s
warranty term (typically 15 years for first and second generation microinverters and up to 25 years for subsequent generation microinverters). 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 over time (i.e., failure rate); (2) the number of failed units expected to result in warranty claims over time (i.e., claim rate); and (3) 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  Failure  Rates  —  The  Company’s  Quality  and  Reliability  department  has  primary  responsibility  to  determine  the  estimated
failure rates for each generation of microinverter. To establish initial failure rate estimates for each generation of microinverter, the Company’s
quality engineers use a combination of industry standard Mean Time Between Failure (“MTBF”) estimates for individual components contained in
its  microinverters,  third  party  data  collected  on  similar  equipment  deployed  in  outdoor  environments  similar  to  those  in  which  the  Company’s
microinverters are installed, and rigorous long term reliability and accelerated life cycle testing which simulates the service life of the microinverter
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 microinverter 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.

Estimated  Claim  Rates  —  Warranty  claim  rate  estimates  are  based  upon  observed  historical  trends  and  assumptions  with  respect  to
expected  customer  behavior  over  the  warranty  period.  As  the  vast  majority  of  the  Company’s  microinverters  have  been  sold  to  end  users  for
residential  applications,  the  Company  believes  that  warranty  claim  rates  will  be  affected  by  changes  over  time  in  residential  home  ownership
because  the  Company  expects  that  subsequent  homeowners  are  less  likely  to  file  claims  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 microinverters; (2) the estimated cost to ship replacement microinverters 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  over  long  periods  of  time  (between  15  and  25  years,  depending  on  the  generation  of
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 microinverter units 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.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 failure rates, claim 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.

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

The  Company’s  warranty  obligations  related  to  microinverters  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 microinverters 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 failure rates, claim 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. See 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.

Warranty for Other Products

The Company offers a 5‑year warranty for its Envoy communications gateway and a 10‑year warranty on its AC Battery storage solution.
The warranties provide the Company with the right, but not the obligation, to assign its warranty obligations to a third-party. As such, warranties
for Envoy and AC Battery storage solution products are accounted for under the fair value method of accounting.

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 $16.2 million, $0.8 million and

$0.6 million during the years ended December 31, 2021, 2020 and 2019, respectively.

Research and Development Costs

The Company expenses research and development costs as incurred. Research and development expense consists primarily of product

development personnel costs, including salaries and benefits, stock-based compensation, other professional costs and allocated facilities costs.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 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 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  restricted  stock  units  (“RSUs”)  is  recognized  on  a  straight-line  basis  over  the  requisite
service period. Stock-based compensation for performance stock units (“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.

Common Stock Repurchase

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

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  (loss)  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  (loss).  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.

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Income Taxes

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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  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.

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 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 Issued Accounting Pronouncements

Not Yet Effective

In  August  2020,  the  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),” which reduces the number of accounting
models  in  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 will adopt the new
guidance in the annual period beginning January 1, 2022, on a modified retrospective basis. On the date of adoption, the Company expects to
record  a  net  decrease  to  additional  paid-in  capital  by  approximately  $207.9  million,  net  of  tax  to  remove  the  equity  component  separately
recorded for the conversion features associated with the convertible debt instruments and equity component associated with the issuance costs,
an increase of approximately $244.5 million in the carrying value of its convertible debt instrument to reflect the full principal amount of the Notes
outstanding  net  of  issuance  costs,  a  decrease  to  deferred  tax  liability  of  approximately  $62.3  million,  and  a  decrease  of  approximately
$25.7 million, net of tax to accumulated deficit. These estimates could change as the Company continues to progress with the implementation of
the standard.

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”).  The  standard  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. The standard 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 plans to adopt the standard effective January 1, 2023.

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3.    REVENUE RECOGNITION

Disaggregated Revenue

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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,
2020
2021

(In thousands)

$

$

$

$

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

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

637,879 
136,546 
774,425 

728,254 
46,171 
774,425 

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,
2021

December 31,
2020

(In thousands)

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

182,165 
17,879 
51,986 
47,665 
125,473 

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, 2021.

Significant changes in the balances of contract assets (prepaid expenses and other assets) as of December 31, 2021 are as follows (in

thousands):

Contract Assets

Contract Assets, beginning of period

Amount recognized
Increase

Contract Assets, end of period

$

$

69,865 
(21,894)
45,120 
93,091 

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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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Significant changes in the balances of contract liabilities (deferred revenues) as of December 31, 2021 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

$

$

173,138 
(64,793)
141,511 
249,856 

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:

2022
2023
2024
2025
2026
Thereafter

Total

4.    INVENTORY

Inventory consists of the following:

Raw materials
Finished goods
Total inventory

Enphase Energy, Inc. | 2021 Form 10-K | 92

December 31,
2021
(In thousands)

$

$

62,671 
55,497 
50,300 
43,362 
27,607 
10,419 
249,856 

December 31,
2021

December 31,
2020

$

$

(In thousands)

25,429  $
48,971 
74,400  $

10,140 
31,624 
41,764 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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
(Years)
3-10
5-10
3-5
3-5
3-10

December 31,

2021

2020

(In thousands)

$

$

95,365  $
3,197 
5,861 
28,118 
12,546 
114 
14,332 
159,533 
(77,366)
82,167  $

63,411 
2,532 
2,972 
17,004 
9,021 
— 
9,747 
104,687 
(61,702)
42,985 

Depreciation expense for property and equipment for the years ended December 31, 2021, 2020 and 2019 was $16.7 million, $9.7 million

and $7.3 million, respectively.

As of December 31, 2021 and 2020, unamortized capitalized software costs were $12.6 million and $4.8 million, respectively.

6.    BUSINESS COMBINATIONS

Acquisition of ClipperCreek, Inc. (“ClipperCreek”)

On  December  31,  2021,  the  Company  completed  the  acquisition  of  100%  of  the  shares  of  ClipperCreek,  a  privately-held  company.
ClipperCreek offers electric vehicle (“EV”) charging solutions for residential and commercial customers in the U.S. As part of the purchase price,
the Company paid approximately $113.1 million in cash on December 31, 2021. The Company expects this acquisition will allow the Company to
enter into the growing EV charging market and provides for cross-selling opportunities.

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 $40.0 million in shares of
common stock of the Company payable in the first quarter of 2023, subject to achievement of certain revenue and operational targets. As the
additional  payments  require  continuous  employment  of  certain  key  employees  of  ClipperCreek  and  are  subject  to  other  conditions,  these
payments are being accounted for as post-combination expense and will be recognized ratably over the one year period presuming conditions
will be met.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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

$

$

8,387 
37,800 
66,916 
113,103 

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

Preliminary Fair
Value
(In thousands)

$

$

600 
37,200 
37,800 

Useful Life
(Years)

Based on actual
shipments
5

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,
2020
2021

$
$

1,401,803  $
145,798  $

790,791 
139,126 

The  Company  incurred  and  accrued  costs  related  to  this  acquisition  of  $0.5  million  that  were  recorded  in  general  and  administrative

expenses in the accompanying consolidated statements of operations for the year ended December 31, 2021.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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

On  December  13,  2021,  the  Company  completed  the  acquisition  of  100%  of  the  shares  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 U.S. As part of the purchase price, the Company paid approximately $69.9 million in cash on December 13, 2021. The
Company  expects  this  acquisition  will  offer  installers  an  online  platform  to  service  their  operations  and  maintenance  contracts  and  provides
access to a nationwide qualified supplemental labor pool that can perform service calls.

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 $11.0 million in shares of the Company’s
common stock in the first half of 2023 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 will be recognized ratably over the term of measurement period presuming conditions
will be 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
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.

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

Preliminary 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  $0.5  million  that  were  recorded  in  general  and  administrative

expenses in the accompanying consolidated statements of operations for the year ended December 31, 2021.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 Company expects this acquisition will provide installers new services by providing proposal drawing and permit plan sets.

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  will  be  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. As both additional payments require
continuous employment of certain key employees of DIN 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.

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  offering,  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:

Customer relationship

Preliminary Fair
Value
(In thousands)

$

11,700 

Useful Life
(Years)

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, respectively.

Acquisition of Sofdesk Inc. (“Sofdesk”)

On  January  25,  2021,  the  Company  completed  the  acquisition  of  100%  of  the  shares  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.  The  Company  expects  this  acquisition  will  offer  installers  design,  proposal  and  permitting  services  of  home  energy
solutions.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

As  part  of  the  purchase  price,  the  Company  (i)  paid  approximately  $32.0  million  in  cash  on  January  25,  2021  and  (ii)  is  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  contingent  consideration  is  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 will be 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 is contingent upon the continuous service of the key
employees, it is being accounted for as a post-combination expense and is recognized ratably over the term of measurement period.

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.

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 Solargraf

 and Roofgraf

 brands.

TM

TM

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

Preliminary Fair
Value
(In thousands)

Useful Life
(Years)

$

$

6,900 
1,800 
500 
9,200 

5

5

5

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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, 2021 and December 31, 2020 are as follows:

Goodwill

Goodwill, beginning of period

Goodwill acquired
Currency translation adjustment

Goodwill, end of period

December 31,
2021

December 31,
2020

$

$

(In thousands)

24,783  $

156,390 
81 

181,254  $

24,783 
— 
— 
24,783 

The Company’s purchased intangible assets as of December 31, 2021 and December 31, 2020 are as follows:

December 31, 2021

Gross

Additions

Accumulated
Amortization

Net

Gross

Additions

Accumulated
Amortization

Net

December 31, 2020

(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 

13,100 
26,421 
— 
— 

25,550 
14,600 
37,700 
600 

(8,958)
(11,448)
(93)
— 

29,692 
29,573 
37,607 
600 

13,100 
23,100 
— 
— 

— 
3,321 
— 
— 

(5,276)
(5,723)
— 
— 

7,824 
20,698 
— 
— 

$

39,807  $

78,450  $

(20,499) $

97,758  $

36,486  $

3,321  $

(10,999) $

28,808 

Amortization expense related to finite-lived intangible assets are as follows:

Years Ended December 31,

2021

2020

Developed technology
Customer relationships

Trade names

Total amortization expense

$

$

(In thousands)
$

3,681 
5,726 
93 
9,500 

$

2,183 
2,909 
— 
5,092 

Amortization  of  developed  technology,  customer  relationships  and  trade  names  is  recorded  to  cost  of  sales  and  sales  and  marketing

expense.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The expected future annual amortization expense of intangible assets as of December 31, 2021 is presented below (in thousands):

Fiscal year:

2022
2023
2024
2025
2026
Thereafter

Total

December 31,
2021

$

$

22,212 
21,856 
19,059 
17,744 
14,185 
2,416 
97,472 

8.    CASH EQUIVALENTS AND MARKETABLE SECURITIES

The marketable securities consist of the following (in thousands):

Amortized Cost

Gross Unrealized
Gains

Gross Unrealized
Losses

Fair Value

Cash and Cash
Equivalents

Marketable
Securities

As of December 31, 2021

Money market funds
Certificate of Deposit
Commercial paper
Corporate notes and bonds
U.S. Treasuries
U.S. Government agency
securities
Total

$

$

35,789  $
16,001 
215,964 
199,244 
14,999 

487,743 
969,740  $

—  $
— 
— 
— 
— 

— 
—  $

—  $
(2)
(114)
(872)
(1)

(1,870)
(2,859) $

35,789  $
15,999 
215,850 
198,372 
14,998 

485,873 
966,881  $

35,789  $
6,000 
26,997 
760 
— 

— 
69,546  $

— 
9,999 
188,853 
197,612 
14,998 

485,873 
897,335 

The  following  table  summarizes  the  contractual  maturities  of  the  Company’s  marketable  securities  as  of  December  31,  2021  (in

thousands):

Due within one year
Due within one to three years

Total

Amortized Cost

Fair Value

$

$

533,237  $
436,503 
969,740  $

532,689 
434,192 
966,881 

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
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,
2021

December 31,
2020

(In thousands)

$

$

13,062  $
79,038 
20,522 
3,830 
14,653 
3,710 
8,602 
14,495 
157,912  $

6,634 
36,622 
10,300 
4,542 
5,500 
— 
— 
12,944 
76,542 

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

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  $

31,294 
5,244 
8,591 
(10,881)
2,326 
524 
37,098 
(10,078)
27,020 

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:

2021

In 2021, the Company recorded $19.4 million in warranty expense from changes in estimates, of which $11.6 million relates to continuing
analysis of field performance data and diagnostic root-cause failure analysis primarily relating to its prior generation products, and $7.8 million
relates 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.

Enphase Energy, Inc. | 2021 Form 10-K | 100

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2020

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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.

2019

In 2019, the Company recorded a $5.5 million increase to warranty expense related to cost increases primarily driven by increased U.S.
tariffs announced during 2019 for its products manufactured in China. The Company also recorded additional warranty expense of $3.1 million
based  on  continuing  analysis  of  field  performance  data  and  diagnostic  root-cause  failure  analysis  primarily  relating  to  its  second  and  third
generation products, partially offset by improved failure rates for its IQ7 series.

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.

The following table presents assets and liabilities measured at fair value on a recurring basis using the above input categories:

Enphase Energy, Inc. | 2021 Form 10-K | 101

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Assets:

Cash and cash equivalents:
Money market funds
Certificate of deposit
Commercial paper
Corporate notes and bonds

Marketable securities:

Certificate 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

Contingent consideration

Warranty obligations

Current
Non-current

Total warranty obligations measured at fair
value

Total liabilities measured at fair value

$

$

$

$

December 31, 2021

December 31, 2020

(In thousands)

Level 1

Level 2

Level 3

Level 1

Level 2

Level 3

35,789  $
— 
— 
— 

— 
— 
— 
— 
— 

—  $

6,000 
26,997 
760 

9,999 
188,853 
197,612 
485,873 
14,998 

—  $
— 
— 
— 

— 
— 
— 
— 
— 

— 
35,789  $

— 

931,092  $

41,042 
41,042  $

654,699  $

— 
— 
— 

— 
— 
— 
— 
— 

— 

654,699  $

—  $
— 
— 
— 

— 
— 
— 
— 
— 

— 
—  $

— 
— 
— 
— 

— 
— 
— 
— 
— 

— 
— 

—  $

—  $

3,710  $

—  $

—  $

— 

— 
— 

— 
—  $

— 
— 

— 
—  $

14,612 
36,395 

51,007 
54,717  $

— 
— 

— 
—  $

— 
— 

— 
—  $

8,267 
20,469 

28,736 
28,736 

Notes due 2028, Notes due 2026 and Notes due 2025

The  Company  carries  the  Notes  due  2028,  Notes  due  2026  and  Notes  due  2025  (as  defined  below)  at  face  value  less  unamortized
discount and issuance costs on its consolidated balance sheets. The fair value of the Notes due 2028, Notes due 2026 and Notes due 2025 was
$594.4 million, $642.3 million and $240.0 million, respectively, as of December 31, 2021 based on the closing trading prices 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.

Equity investments without readily determinable fair value

In  December  2020,  the  Company  invested  approximately  $5.0  million  in  a  privately-held  company  without  readily  determinable  market
value, which is included in “Other assets” in the consolidated balance sheets. The Company has elected the measurement alternative for equity
investments that do not have readily determinable fair values. The Company did not record an impairment charge on its investment during the
year  ended  December  31,  2021,  as  no  events  or  changes  in  circumstances  were  identified  which  could  result  as  an  indicator  for  impairment.
Further, there were no observable price changes in orderly transactions for the identical or a similar investment of the same issuer during the
year ended December 31, 2021. Equity investments without readily determinable fair value are classified within Level 3 in the fair value hierarchy
because the Company estimates the value based on valuation methods using a combination of observable and unobservable inputs, including
valuation  ascribed  to  the  issuing  company  in  subsequent  financing  rounds,  volatility  in  the  results  of  operations  of  the  issuers  and  rights  and
obligations of the securities the Company holds.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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.

In  June  2021,  the  Company  invested  approximately  $20.0  million  in  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. Further, the Company has
concluded  that  the  Company’s  investment  in  a  debt  security  is  considered  a  Level  3  measurement  due  to  the  use  of  significant  unobservable
inputs in the valuation model. Principal plus accrued interest receivable of the investment approximates the fair value.

Investment in debt securities are recorded in “Other Assets” on the accompanying consolidated balance sheet as of December 31, 2021.

The changes in the balance in investments in debt securities during the period are as follows:

Balance at beginning of period

Investment
Fair value adjustments included in other (expense) income, net
Settlement

Balance at end of period

Enphase Energy, Inc. | 2021 Form 10-K | 103

Year Ended
December 31,
2021
(In thousands)

$

$

— 
58,000 
9,611 
(26,569)
41,042 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Contingent consideration

The estimated fair value of the contingent consideration incurred in connection with the Company’s acquisition of Sofdesk is considered a
Level 3 measurement due to the use of significant unobservable inputs. These unobservable inputs include probability assessment of expected
future customer count over the period in which the obligation is 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 is discounted back to present
value using the Company’s cost of debt. The fair value of contingent consideration arrangement is 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,  is  recorded  in  the  Company’s
consolidated statement of operations for that period.

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, 2021:

Balance at beginning of period

Addition
Fair value adjustments included in other income (expense), net

Balance at end of period

Warranty obligations.

Year Ended
December 31,
2021
(In thousands)

$

$

— 
3,500 
210 
3,710 

Fair Value Option for Warranty Obligations Related to Microinverters and Other 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 failure rates, claim 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 (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

Enphase Energy, Inc. | 2021 Form 10-K | 104

Years Ended December 31,
2020
2021

(In thousands)

$

$

28,736  $
18,098 
10,844 
(11,248)
4,654 
(77)
51,007  $

19,806 
7,021 
5,039 
(7,781)
3,255 
1,396 
28,736 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Quantitative and Qualitative Information about Level 3 Fair Value Measurements

As  of  December  31,  2021  and  December  31,  2020,  the  significant  unobservable  inputs  used  in  the  fair  value  measurement  of  the

Company’s liabilities designated as Level 3 are as follows:

Item Measured at Fair Value

Valuation Technique

Warranty obligations for microinverters sold
since January 1, 2014

Discounted cash flows

Description of Significant Unobservable Input
Profit element and risk premium

Credit-adjusted risk-free rate

Percent Used
(Weighted Average)

December 31,
2021
15%

12%

December 31,
2020
15%

13%

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 no material change to the liability. Decreasing the profit element and risk premium by 100 basis
points  would  result  in  a  $0.9  million  reduction  of  the  liability.  Increasing  the  discount  rate  by  100  basis  points  would  result  in  a  $2.9  million
reduction of the liability. Decreasing the discount rate by 100 basis points would result in a $2.3 million increase to the liability.

12.    RESTRUCTURING    

Restructuring expense consist of the following:

Redundancy and employee severance and benefit arrangements
Asset impairments
Lease loss reserves (benefit)

Total restructuring charges

2018 Plan

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

—  $
— 
— 
—  $

—  $
— 
— 
—  $

1,575 
1,124 
(100)
2,599 

In the third quarter of 2018, the Company began implementing restructuring actions (the “2018 Plan”) to lower its operating expenses. The
restructuring  actions  include  reorganization  of  the  Company’s  global  workforce,  elimination  of  certain  non-core  projects  and  consolidation  of
facilities. The Company completed its restructuring activities under the 2018 Plan in 2019.

The following table presents the details of the Company’s restructuring charges under the 2018 Plan for the period indicated:

Redundancy and employee severance and benefit arrangements
Asset impairments
Lease loss reserves (benefit)

Total restructuring charges

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

—  $
— 
— 
—  $

—  $
— 
— 
—  $

1,575 
1,124 
(100)
2,599 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

13.    DEBT

The following table provides information regarding the Company’s debt.

December 31,
2021

December 31,
2020

(In thousands)

Convertible notes
Notes due 2028
Less: unamortized discount and issuance costs

Carrying amount of Notes due 2028

Notes due 2026
Less: unamortized discount and issuance costs

Carrying amount of Notes due 2026

Notes due 2025
Less: unamortized discount and issuance costs

Carrying amount of Notes due 2025

Notes due 2024
Less: unamortized discount and issuance costs

Carrying amount of Notes due 2024

Notes due 2023
Less: unamortized issuance costs

Carrying amount of Notes due 2023

$

575,000  $
(149,411)
425,589 

632,500 
(111,433)
521,067 

102,175 
(16,123)
86,052 

— 
— 
— 

5,000 
(62)
4,938 

Sale of long-term financing receivable recorded as debt

Total carrying amount of debt

Less: current portion of convertible notes and long-term financing receivable recorded as debt

Debt, non-current

— 
1,037,646 
(86,052)
951,594  $

$

Enphase Energy, Inc. | 2021 Form 10-K | 106

— 
— 
— 

— 
— 
— 

320,000 
(64,979)
255,021 

88,140 
(19,119)
69,021 

5,000 
(102)
4,898 

1,925 
330,865 
(325,967)
4,898 

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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 million aggregate principal amount of 0.0% convertible senior notes due 2028 (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.

In  accounting  for  the  issuance  of  the  Notes  due  2028  on  March  1,  2021,  the  Company  separated  the  Notes  due  2028  into  liability  and
equity  components.  The  carrying  amount  of  the  liability  component  of  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

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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 is included in additional paid-in capital in the consolidated balance sheet and is not remeasured as long as it
continues  to  meet  the  conditions  for  equity  classification.  The  difference  between  the  principal  amount  of  the  Notes  due  2028  and  the  liability
component (the “debt discount”) is amortized to interest expense using the effective interest method over the term of the Notes due 2028.

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  $6.6  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  $2.5  million  and  were  netted  with  the  equity  component  in  stockholders’  equity.  As  of  December  31,  2021,  the  unamortized
deferred issuance cost for the Notes due 2028 was $5.8 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

Year Ended
December 31, 2021
(In thousands)

$

$

16,401 
785 
17,186 

The  effective  interest  rate  on  the  liability  component  on  the  Notes  due  2028  was  4.77%  for  the  year  ended  December  31,  2021,  which
remains unchanged from the date of issuance. The remaining unamortized debt discount was $143.6 million as of December 31, 2021 and will be
amortized over approximately 6.2 years from December 31, 2021.

Notes due 2028 Hedge and Warrant Transactions

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.

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

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 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 0.0% convertible senior notes due 2026 (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 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

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(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.

In  accounting  for  the  issuance  of  the  Notes  due  2026  on  March  1,  2021,  the  Company  separated  the  Notes  due  2026  into  liability  and
equity  components.  The  carrying  amount  of  the  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 is included in additional paid-in capital in the consolidated balance sheet and is not remeasured as long as it continues to meet the
conditions  for  equity  classification.  The  difference  between  the  principal  amount  of  the  Notes  due  2026  and  the  liability  component  (the  “debt
discount”) is amortized to interest expense using the effective interest method over the term of the Notes due 2026.

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.  As  of  December  31,  2021,  the  unamortized
deferred issuance cost for the Notes due 2026 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 2026:

Amortization of debt discount
Amortization of debt issuance costs

Total interest cost recognized

Year Ended
December 31, 2021
(In thousands)

$

$

18,735 
1,347 
20,082 

The effective interest rate on the liability component of Notes due 2026 was 4.44% for the year ended December 31, 2021, which remains
unchanged  from  the  date  of  issuance.  The  remaining  unamortized  debt  discount  was  $104.8  million  as  of  December  31,  2021,  and  will  be
amortized over approximately 4.2 years from December 31, 2021.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Notes due 2026 Hedge and Warrant Transactions

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 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  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 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

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

$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, 2021 and 2020, 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,  2021  and  2020.  As  a  result,  as  of  January  1,  2021,  the  Notes  due  2025  are  convertible  at  the  holders’  option
through March 31, 2022. Accordingly, the Company classified the net carrying amount of the Notes due 2025 of $86.1 million and $255.0 million
as Debt, current on the consolidated balance sheet as of December 31, 2021 and 2020, respectively. From January 1, 2022 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.

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 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.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 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, 2021, $102.2 million aggregate principal amount of the Notes due 2025 remained outstanding.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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,
2020
2021

(In thousands)
342  $

5,529 
661 
6,532  $

649 
10,072 
1,229 
11,950 

$

$

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 $14.6 million and $58.6 million as of December 31, 2021 and 2020, respectively,
and will be amortized over approximately 3.2 years from December 31, 2021.

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 (the “2025 Warrants”) whereby the Company sold 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.

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,  2021,  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.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 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 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  Warrants  liability  were  recorded  in  other  expense,  net  in  the  consolidated
statements of operations during the twelve months ended December 31, 2020.

Convertible Senior Notes due 2024

On June 5, 2019, the Company issued $132.0 million aggregate principal amount of 1.0% convertible senior notes due 2024 (the “Notes
due 2024”). The Notes due 2024 are general unsecured obligations and bear interest at an annual rate of 1.0% per year, payable semi-annually
on  June  1  and  December  1  of  each  year,  beginning  December  1,  2019.  The  Notes  due  2024  are  governed  by  an  indenture  between  the
Company and U.S. Bank National Association, as trustee. The Notes due 2024 will mature on June 1, 2024, 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 2024 may be converted, under certain circumstances as described below, based on an initial conversion
rate  of  48.7781  shares  of  common  stock  per  $1,000  principal  amount  (which  represents  an  initial  conversion  price  of  $20.50  per  share).  The
conversion rate for the Notes due 2024 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 $128.0 million in net proceeds, after deducting
the initial purchasers’ discount, from the issuance of the Notes due 2024.

For accounting of Company’s Notes due 2024, refer Note 13. “Debt,” of the notes to consolidated financial statements included in Part II,

Item 8 of Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

During  the  year  ended  December  31,  2021,  $88.1  million  in  aggregate  principal  amount  of  the  Notes  due  2024  were  converted  or
repurchased  by  the  Company,  and  the  principal  amount  of  the  converted  and  repurchased  Notes  due  2024  was  repaid  in  cash.  Of  the
$88.1 million in aggregate principal amount, $25.5 million in aggregate principal amount of Notes due 2024 were repurchased by the Company
pursuant to separately- and privately-negotiated exchange agreements entered into in March 2021 concurrently with the issuance of Notes due
2026 and Notes due 2028. In connection with such conversions and repurchases, during the year ended December 31, 2021, the Company also
issued 3.8 million shares of its common stock to the holders of the converted and repurchased Notes due 2024, with an aggregate fair value of
$669.5 million, representing the conversion value in excess of the principal amount of the Notes due 2024. The total amount of $88.1 million paid
to settle the conversions and repurchases of the Notes due 2024 during 2021 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 notes settlement and allocating that portion
of the conversion price to the liability component in the amount of $79.5 million. The residual of the conversion price of $8.7 million was allocated
to  the  equity  component  of  the  Notes  due  2024  as  a  reduction  of  additional  paid-in  capital.  As  part  of  the  settlement  of  the  conversions  and
repurchases, the Company wrote-off the $16.8 million unamortized debt discount and $1.4 million debt issuance cost apportioned to the principal
amount  of  Notes  due  2024  were  converted  and  repurchased.  The  Company  also  recorded  a  loss  on  partial  settlement  of  the  converted  and
repurchased Notes due 2024 of $9.6 million in Other income (expense), net in the year ended December 31, 2021, representing the difference
between the

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

consideration  attributed  to  the  liability  component  and  the  sum  of  the  net  carrying  amount  of  the  liability  component  and  unamortized  debt
issuance costs. Following the conversions and repurchases summarized above, the Notes due 2024 are no longer outstanding.

The following table presents the total amount of interest cost recognized in the statement of operations relating to the Notes due 2024:

Contractual interest expense
Amortization of debt discount
Amortization of debt issuance costs

Total interest cost recognized

Notes due 2024 Hedge and Warrant Transactions

Years Ended December 31,
2020
2021

(In thousands)
8  $

772 
74 
854  $

1,284 
6,325 
646 
8,255 

$

$

In connection with the offering of the Notes due 2024, the Company entered into privately-negotiated convertible note hedge transactions
(the  “Notes  due  2024  Hedge”)  pursuant  to  which  the  Company  has  the  option  to  purchase  a  total  of  approximately  6.4  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 $20.50 per share, which is the initial conversion price of the Notes due 2024. The total cost of the convertible note hedge transactions
was approximately $36.3 million. The Notes due 2024 Hedge transactions are expected generally to reduce potential dilution to the Company’s
common stock upon any conversion of the Notes due 2024 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
2024 (the “2024 Warrants”) whereby the Company sold warrants to acquire approximately 6.4 million shares of the Company’s common stock
(subject to anti-dilution adjustments) at an initial strike price of $25.23 per share. The Company received aggregate proceeds of approximately
$29.8 million from the sale of the 2024 Warrants. If the market value per share of the Company’s common stock, as measured under the 2024
Warrants,  exceeds  the  strike  price  of  the  2024  Warrants,  the  2024  Warrants  will  have  a  dilutive  effect  on  the  Company’s  earnings  per  share,
unless  the  Company  elects,  subject  to  certain  conditions,  to  settle  the  2024  Warrants  in  cash.  Taken  together,  the  purchase  of  the  Notes  due
2024 Hedge transactions and the sale of the 2024 Warrants are intended to reduce potential dilution from the conversion of the Notes due 2024
and  to  effectively  increase  the  overall  conversion  price  from  $20.50  to  $25.23  per  share.  The  2024  Warrants  are  only  exercisable  on  the
applicable  expiration  dates  in  accordance  with  the  2024  Warrants.  Subject  to  the  other  terms  of  the  2024  Warrants,  the  first  expiration  date
applicable to the 2024 Warrants is September 1, 2024, and the final expiration date applicable to the 2024 Warrants is April 22, 2025.

During the year ended December 31, 2021, in connection with the repurchase of $25.5 million aggregate principal amount of the Notes due
2024  summarized  above,  the  Company  entered  into  partial  unwind  agreements  with  respect  to  certain  of  the  Notes  due  2024  Hedge  and
received 1.1 million shares of its common stock as a termination payment for the portion of the Notes due 2024 Hedge that were unwound.

In addition to the unwind transactions discussed above, the Company also received 2.7 million shares of the Company’s common stock
from the Notes due 2024 Hedge settlements as a result of the conversion of $62.6 million in aggregate principal amount of the Notes due 2024 in
2021.  In  addition,  the  Company  entered  into  partial  unwind  agreements  with  respect  to  certain  of  the  2024  Warrants  in  connection  with  the
repurchase and conversion of $88.1 million in aggregate principal amount of the Notes due 2024 during 2021 and issued 3.8 million shares of its
common stock as a termination payment for the portion of the 2024 Warrants that were unwound. Following the transactions summarized above,
Notes due 2024 Hedge and 2024 Warrants are no longer outstanding.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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, 2021 and December 31, 2020, $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 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

Sale of Long-Term Financing Receivables

Years Ended December 31,
2020
2021

(In thousands)
200  $
40 
240  $

200 
40 
240 

$

$

The Company entered into an agreement with a third party in the fourth quarter of 2017 to sell certain current and future receivables at a
discount. In December 2017, the third party made an initial purchase of receivables that resulted in net proceeds to the Company of $2.8 million.
This transaction was recorded as debt on the accompanying consolidated balance sheets, and the debt balance was relieved in January 2019 as
the  underlying  receivables  were  settled.  During  the  year  ended  December  31,  2018,  the  third  party  made  three  additional  purchases  of
receivables that resulted in total net proceeds to the Company of $5.6 million. These transactions were recorded as debt on the accompanying
consolidated balance sheets, and the total associated debt balance was relieved by December 2021 as the underlying receivables are settled. As
of December 31, 2021, the total sale of long-term financing receivable recorded as debt are no longer outstanding.

14.    COMMITMENTS AND CONTINGENCIES

Operating Leases

The Company leases office facilities under noncancelable operating leases that expire on various dates through 2032, some of which may

include options to extend the leases for up to 12 years.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The components of lease expense are presented as follows:

Operating lease costs

The components of lease liabilities are presented as follows:

Operating lease liabilities, current (Accrued liabilities)
Operating lease liabilities, non-current (Other liabilities)

Total operating lease liabilities

Supplemental lease information:
Weighted average remaining lease term
Weighted average discount rate

Supplemental cash flow and other information related to operating leases, are as follows:

Cash paid for amounts included in the measurement of lease liabilities:

Operating cash flows from operating leases

Non-cash investing activities:

Lease liabilities arising from obtaining right-of-use assets

Undiscounted cash flows of operating lease liabilities as of December 31, 2021 are as follows:

Year:

2022
2023
2024
2025
2026
Thereafter
Total lease payments
Less: imputed lease interest

Total lease liabilities

Years Ended December 31,
2020
2021

(In thousands)
7,049  $

5,332 

December 31,
2021

December 31,
2020

(In thousands)
3,830  $

11,920 
15,750  $

4,542 
15,209 
19,751 

5.9 years
7.4%

6.4 years
7.7%

Years Ended December 31,
2020
2021

(In thousands)

5,855  $

4,762 

708  $

10,625 

$

$

$

$

$

Lease Amounts
(In thousands)

$

$

4,771 
4,160 
3,198 
2,422 
1,395 
2,680 
18,626 
(2,876)
15,750 

As  of  December  31,  2021,  we  have  an  additional  operating  lease  commitment  of  $5.6  million  for  an  office  lease  that  has  not  yet

commenced. The operating lease commitment will commence in the first quarter of 2022 with a lease term of 10.0 years.

Purchase Obligations

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,  2021,  these  purchase
obligations totaled approximately $424.6 million.

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Litigation

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The Company is subject to various legal proceedings relating to claims arising out of its operations that have not been fully resolved. The
outcome of litigation is inherently uncertain. If one or more legal matters were resolved against the Company in a reporting period for amounts
above  management’s  expectations,  the  Company’s  business,  results  of  operations,  financial  position  and  cash  flows  for  that  reporting  period
could be materially adversely affected. As of December 31, 2021 and February 11, 2022, the Company is not currently a party to any matters that
management expects will have an adverse material effect on the Company’s consolidated financial position, results of operations or cash flows.

Contingencies

On March 26, 2020, the Office of the United States Trade Representative (the “USTR”) 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 under U.S. note
20(ss)(40)  to  subchapter  III  of  chapter  99  of  the  Harmonized  Tariff  Schedule  of  the  United  States  (the  “Tariff  Exclusion”).  The  Tariff  Exclusion
applies  to  covered  products  under  the  China  Section  301  Tariff  Actions  (“Section  301  Tariffs”)  taken  by  the  USTR  exported  from  China  to  the
United States from September 24, 2018 until August 7, 2020. Accordingly, the Company sought 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. The refund request was subject to review and approval by the U.S. Customs and Border Protection; therefore, the
Company assessed the probable loss recovery in the year ended December 31, 2020 was equal to the approved refund requests available to the
Company.

As  of  December  31,  2020,  the  Company  had  received  $24.8  million  of  tariff  refunds  and  accrued  for  the  remaining  $14.7  million  tariff
refunds  that  were  approved,  however,  not  yet  received  on  or  before  December  31,  2020.  As  of  March  31,  2021,  the  Company  received  the
remaining  $14.7  million  tariff  refunds.  For  the  year  ended  December  31,  2020,  the  Company  recorded  $38.9  million  as  a  reduction  to  cost  of
revenues  in  the  Company’s  consolidated  statement  of  operations  as  the  approved  refunds  relate  to  paid  tariffs  previously  recorded  to  cost  of
revenues, therefore, the Company recorded the corresponding approved tariff refunds as credits to cost of revenues in the fourth quarter of 2020.
For  the  year  ended  December  31,  2020,  the  Company  recorded  the  $0.6  million  accrued  interest  as  interest  income  in  the  consolidated
statement of operations. The tariff refund receivable of zero and $14.7 million was recorded as a reduction of accounts payable to Flex Ltd. and
affiliates  (“Flex”),  the  Company’s  manufacturing  partner  and  the  importer  of  record  who  will  first  receive  the  tariff  refunds,  on  the  Company’s
consolidated balance sheet as of December 31, 2021 and December 31, 2020, respectively.

The Tariff Exclusion expired on August 7, 2020 and those microinverter products now are subject to tariffs. The Company also continues to
pay Section 301 Tariffs on its storage and communication products and other accessories imported from China which are not subject to the Tariff
Exclusion.

15.    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,

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

2024. During the fourth quarter of 2021, the Company repurchased and subsequently retired approximately 1.5 million shares of common stock
from  the  open  market  at  an  average  cost  of  $196.98  per  share  for  a  total  of  $300.0  million.  As  of  December  31,  2021,  the  Company  has
approximately $200.0 million remaining for repurchase of shares under the 2021 Repurchase Program.

16.    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 7 years after the grant date. Equity awards granted under the 2011 Plan generally vest over a 4-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, 2021, 7,963,894 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.  As  of  December  31,  2021,
1,754,231 shares remained available for future issuance under the ESPP. On January 1, 2022, the shares available for issuance under the ESPP
automatically increased by 700,000 shares.

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.

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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

2021

Years Ended December 31,
2020

2019

$

**
**
**
**
**

$

38.45
3.8
86.4%
0.1%
—%

9.16
3.8
89.1%
2.1%
—%

**    No stock options were granted during the year ended December 31, 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.

Performance Stock Units

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

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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  expected  to  vest  is  measured  at  fair  value  on  the  date  of  grant  and
recognized ratably over the requisite service period. 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
Restructuring
Total

Income tax benefit included in the provision for incomes taxes

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

$

7,366  $

33,927 
37,434 
35,559 
— 

114,286  $

97,129  $

3,759  $

12,701 
11,548 
14,495 
— 
42,503  $

61,389  $

1,650 
4,897 
5,678 
7,216 
735 
20,176 

8,185 

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

Total

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

110,142  $
4,144 
114,286  $

39,841  $
2,662 
42,503  $

19,216 
960 
20,176 

As  of  December  31,  2021,  there  was  approximately  $254.6  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.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Equity Awards Activity

Stock Options

The following is a summary of stock option activity.

Outstanding at December 31, 2018

Granted

Exercised

Canceled

Outstanding at December 31, 2019

Granted

Exercised
Canceled

Outstanding at December 31, 2020

Granted

Exercised
Canceled

Outstanding at December 31, 2021

Vested and expected to vest at December 31, 2021

Exercisable at December 31, 2021

Number of
Shares
Outstanding
(In thousands)

Weighted-
Average
Exercise Price
per Share

Weighted-
Average
Remaining
Contractual
Term
(Years)

Aggregate
Intrinsic
(1)
Value 
(In thousands)

6,772  $

43 

(2,616)

(102)
4,097  $

11 

(1,494)

(82)
2,532  $

— 

(267)

(1)
2,264  $
2,264  $
2,262  $

1.76 

14.58 

1.22 

4.07 
2.18 

64.17 

2.74 

6.94 
1.96 

— 

2.44 

0.83 

1.90 

1.90 

1.90 

$

$

$

$

$

$

31,093 

114,089 

42,091 

409,834 

409,834 

409,550 

2.8

2.8

2.8

(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, 2021 is based on the closing price of the last trading day
during the period ended December 31, 2021. The Company’s stock fair value used in this computation was $182.94 per share.

The following table summarizes information about stock options outstanding at December 31, 2021.

Range of Exercise Prices

$0.70 —– $1.11
$1.29 —– $1.29
$1.31 —– $1.31
$1.53 —– $14.58
$64.17 —– $64.17

Total

Options Outstanding
Weighted-
Average
Remaining
Life
(Years)
3.3
2.7
2.3
3.1
5.4

2.8

$

$

Number of
Shares
(In thousands)

486 
1,000 
556 
211 
11 
2,264 

Options Exercisable

Weighted-
Average
Exercise
Price

Number of
Shares
(In thousands)

Weighted-
Average
Exercise
Price

0.86 
1.29 
1.31 
5.65 
64.17 

1.90 

486  $

1,000 
556 
209 
11 
2,262  $

0.85 
1.28 
1.31 
5.65 
64.17 

1.90 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Restricted Stock Units

The following is a summary of RSU activity.

Outstanding at December 31, 2018

Granted
Vested
Canceled

Outstanding at December 31, 2019

Granted
Vested
Canceled

Outstanding at December 31, 2020

Granted
Vested
Canceled

Outstanding at December 31, 2021

Expected to vest at December 31, 2021

Number of
Shares
Outstanding
(In thousands)

Weighted-
Average
Fair Value
per Share at
Grant Date

Weighted-
Average
Remaining
Contractual
Term
(Years)

Aggregate
Intrinsic
(1)
Value 
(In thousands)

4,352  $
2,112 
(1,707)
(494)
4,263  $
1,550 
(2,085)
(140)
3,588  $
1,301 
(1,979)
(124)
2,786  $
2,786  $

3.52 
11.50 
3.87 
4.81 
7.19 
55.66 
7.26 
19.47 
27.61 
179.88 
20.47 
88.50 

100.73 

100.73 

$

$

$

$

$

27,156 

125,578 

364,665 

509,864 

509,864 

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, 2021 is based on the closing price of the last trading day during the period ended December 31,
2021. The Company’s stock fair value used in this computation was $182.94 per share.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Performance Stock Units

The following is a summary of PSU activity.

Outstanding at December 31, 2018

Granted
Vested
Canceled

Outstanding at December 31, 2019

Granted
Vested
Canceled

Outstanding at December 31, 2020

Granted
Vested
Canceled

Outstanding at December 31, 2021

Number of
Shares
Outstanding
(In thousands)

Weighted-
Average
Fair Value
per Share at
Grant Date

Weighted-
Average
Remaining
Contractual
Term
(Years)

Aggregate
Intrinsic
(1)
Value 
(In thousands)

1,330  $
1,052 
(1,063)
(364)
955  $
989 
(1,450)
— 
494  $
715 
(494)
(270)
445  $

4.66 
9.48 
4.62 
5.16 
9.83 
31.12 
10.20 
— 
51.10 
131.60 
59.19 
52.75 

169.82 

$

$

$

10,818 

52,144 

91,803 

0.2 $

81,456 

(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, 2021 is based on the closing price of the last trading day during the period ended December 31,
2021. The Company’s stock fair value used in this computation was $182.94 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

2021

Years Ended December 31,
2020

2019

$

$

6,832  $
235 
29.12  $

4,304  $
347 
12.41  $

1,692 
315 
5.37 

17.    INCOME TAXES

The domestic and foreign components of income before income taxes consisted of the following:

United States
Foreign

Income before income taxes

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

102,886  $
18,042 
120,928  $

112,727  $
6,683 
119,410  $

85,520 
4,594 
90,114 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The income taxes (benefit) for the years presented is as follows:

Current:

Federal
State
Foreign

Deferred:
Federal
State
Foreign

Income taxes (benefit)

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

—  $

—  $

488 
6,232 
6,720 

(28,398)
(4,380)
1,537 
(31,241)
(24,521) $

636 
1,896 
2,532 

(13,445)
(3,672)
— 
(17,117)
(14,585) $

— 
327 
1,589 
1,916 

(56,959)
(17,458)
1,467 
(72,950)
(71,034)

A reconciliation of the income taxes (benefit) provision 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 (benefit) provision at statutory federal rate
State taxes, net of federal benefit
Change in valuation allowance
Foreign tax rate and tax law differential
Tax credits
Stock-based compensation
Other permanent items
Other nondeductible/nontaxable items
Uncertain tax positions
GILTI
Section 162(m)
Convertible note settlements
Warrant mark-to-mark adjustment

Income tax (benefit)

2021

Years Ended December 31,
2020
(In thousands)

2019

$

$

27,681  $
489 
— 
1,073 
(15,632)
(80,950)
178 
2,316 
6,911 
— 
25,812 
8,223 
(622)
(24,521) $

25,076  $
(3,098)
— 
611 
(5,835)
(50,818)
(253)
1,525 
1,530 
— 
11,469 
— 
5,208 
(14,585) $

18,929 
(17,197)
(71,300)
1,206 
(1,803)
(8,072)
31 
2,765 
504 
1,086 
2,817 
— 
— 
(71,034)

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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, 2021 and 2020 is as follows:

Deferred tax assets:

Allowances and reserves
Net operating loss and tax credit carryforwards
Stock-based compensation
Deferred revenue
Fixed assets and intangibles
Sec. 163(j) interest carryforward
Other

Subtotal

Total deferred tax assets

Deferred tax liabilities:

Goodwill
Unremitted foreign earnings
Deferred cost of goods sold

Total deferred tax liabilities

Net deferred tax asset

December 31,

2021

2020

(In thousands)

$

$

18,764  $
65,699 
12,935 
27,778 
39,711 
10,749 
1,609 
177,245 
177,245 

(31,805)
(2,226)
(23,713)
(57,744)
119,501  $

13,146 
53,116 
4,598 
20,765 
8,706 
4,401 
7,007 
111,739 
111,739 

(1,719)
(7)
(17,545)
(19,271)
92,468 

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  which  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  net  operating  loss  carryforwards  for  federal  and  California  income  tax  purposes  of  approximately  $153.9  million  and
$92.8 million, respectively, as of December 31, 2021. The federal and state net operating loss carryforwards, if not utilized, will expire beginning
in 2036 and 2029, respectively.

The Company has approximately $17.3 million of federal research credit and $9.8 million of state research credit carryforwards. The federal

credits begin to expire in 2026 and the state credits can be carried forward indefinitely.

Utilization of some of the federal and state net operating loss and credit carryforwards are subject to annual limitations due to the “change
in ownership” provisions of the Internal Revenue Code of 1986 and similar state provisions. The Company has completed a Section 382 analysis
through December 31, 2021, which indicated no such change has occurred through December 31, 2021.

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 2021 of $12.5 million.

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.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

A tabular reconciliation of the total amounts of unrecognized tax benefits for the years presented is as follows (in thousands):

Unrecognized tax benefits—at beginning of year

Increases in balances related to tax positions taken in prior years
Decreases in balances related to tax positions taken in prior years
Increases in balances related to tax positions taken in current year
Lapses in statutes of limitations

Unrecognized tax benefits—at end of year

2021

Years Ended December 31,
2020

2019

$

$

8,421  $
4,391 
— 
8,301 
(209)
20,904  $

6,589  $
— 
— 
2,006 
(174)
8,421  $

6,325 
— 
(370)
771 
(137)
6,589 

The Company includes interest and penalties related to unrecognized tax benefits within the income tax benefit (provision). In the years
ended  December  31,  2021,  2020  and  2019,  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 2021, 2020 and 2019 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

2021 and by California state authorities for the years 2006 through 2021 due to use and carryovers of net operating losses and credits.

18.    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, 2021 and

2020, amounts due from one customer represented approximately 38% and 36%, respectively, of the total accounts receivable balance.

In 2021, one customer accounted for approximately 34% of total net revenues. In 2020, one customer accounted for approximately 29% of

total net revenues. In 2019, two customers accounted for approximately 21% and 12% of total net revenues.

19.    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, shares to be purchased under the
Company’s  ESPP,  the  Notes  due  2023,  Notes  due  2024,  Notes  due  2025,  Notes  due  2026,  Notes  due  2028,  2024  Warrants,  2025  Warrants,
2026 Warrants, and the 2028 Warrants. See Note 13. “Debt,” of the notes to the consolidated financial statements included in Part II, Item 8 of
this Annual Report on Form 10-K for additional information.

The  dilutive  effect  of  potentially  dilutive  common  shares  is  reflected  in  diluted  earnings  per  share  by  application  of  the  treasury  stock
method for stock options, RSUs, PSUs, the Notes due 2024, the Notes due 2025, the Notes due 2026, the Notes due 2028, the 2024 Warrants,
the 2025 Warrants, the 2026 Warrants and the 2028 Warrants. To the extent these potential common shares are antidilutive, they are excluded
from the calculation of diluted net income per share.

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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

Notes due 2023 interest and financing costs, net

Adjusted net income

Denominator:
Shares used in basic per share amounts:

Weighted average common shares outstanding

Shares used in diluted per share amounts:

Weighted average common shares outstanding
Effect of dilutive securities:

Employee stock-based awards
Notes due 2023
Notes due 2024
2024 Warrants
Notes due 2025
2025 Warrants

Weighted average common shares outstanding for diluted calculation

Basic and diluted net income per share

Net income per share, basic

Net income per share, diluted

2021

Years Ended December 31,
2020
(In thousands, except per share data)

2019

145,449  $
177 
145,626  $

133,995  $
177 
134,172  $

161,148 
1,088 
162,236 

134,025 

125,561 

116,713 

134,025 

125,561 

116,713 

4,918 
900 
768 
647 
929 
691 
142,878 

6,997 
900 
4,449 
4,011 
— 
— 
141,918 

8,964 
5,516 
451 
— 
— 
— 
131,644 

1.09  $

1.02  $

1.07  $

0.95  $

1.38 

1.23 

$

$

$

$

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 2028
2028 Warrants
Notes due 2026
2026 Warrants
Notes due 2025
2025 Warrants
2024 Warrants

Total

2021

Years Ended December 31,
2020
(In thousands)

2019

32 
1,082 
2,184 
1,328 
2,225 
— 
— 
— 
6,851 

43 
— 
— 
— 
— 
197 
1,254 
— 
1,494 

185 
— 
— 
— 
— 

— 
300 
485 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Diluted earnings per share for the year ended December 31, 2021 includes the dilutive effect of stock options, RSUs, PSUs, shares to be
purchased under the 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, shares to be
purchased  under  the  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.

Diluted earnings per share for the year ended December 31, 2019 includes the dilutive effect of stock options, RSUs, PSUs, shares to be
purchased under the ESPP, the Notes due 2023 and Notes due 2024. Certain common stock issuable under stock options, RSUs, PSUs and
warrants issued in conjunction with the Notes due 2024 have been omitted from the diluted net income per share calculation because including
such shares would have been antidilutive.

Since the Company has the intent and ability to settle the aggregate principal amount of the Notes due 2025, Notes due 2026 and Notes
due 2028 in cash and any excess in shares of the Company’s common stock, the Company uses the treasury stock method for calculating any
potential dilutive effect of the conversion spread on diluted net income per share, if applicable. In order to compute the dilutive effect, the number
of  shares  included  in  the  denominator  of  diluted  net  income  per  share  is  determined  by  dividing  the  conversion  spread  value  of  the  “in-the-
money”  Notes  due  2025,  Notes  due  2026  and  Notes  due  2028  by  the  Company’s  average  share  price  during  the  period  and  including  the
resulting share amount in the diluted net income per share denominator. The conversion spread will have a dilutive impact on net income per
share  of  common  stock  when  the  average  market  price  of  the  Company’s  common  stock  for  a  given  period  exceeds  the  conversion  price
of $81.54, $307.47 and $284.87 per share for the Notes due 2025, Notes due 2026 and Notes due 2028, respectively.

20.    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 and for the periods presented:

Long-Lived Assets

United States
India
China
Mexico
New Zealand
Other

Total

December 31,

2021

2020

(In thousands)

37,685  $
17,490 
12,906 
8,735 
4,622 
729 
82,167  $

19,870 
4,371 
9,948 
4,808 
3,837 
151 
42,985 

$

$

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Table of Contents

21.    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,  2021  and
December 31, 2020, $5.0 million aggregate principal amount of the Notes due 2023 were outstanding. For additional information related to this
purchase, see Note 13. “Debt,” for additional information related to this purchase.

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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 Securities and Exchange Commission’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 as of December 2020 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  2021,  our  internal  control  over  financial  reporting  was  effective.  The  Company’s  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 quarter ended December 31,
2021 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. We have not experienced
any material impact to our internal controls over financial reporting despite the fact that most of our employees are continuing to work remotely
due to the COVID-19 pandemic. We continue to monitor and assess the impact of the ongoing COVID-19 pandemic on our internal controls to
minimize the impact on their design and operating effectiveness.

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, within the Company have been detected.

Item 9B.    Other Information

None.

Item 9C.    Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

None.

Enphase Energy, Inc. | 2021 Form 10-K | 132

Table of Contents

Item 10.    Directors, Executive Officers and Corporate Governance

PART III

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 2022 Annual Meeting of Stockholders (our “Proxy Statement”), a copy of which will be filed
with the Securities and Exchange Commission on or before April 30, 2022.

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  from  the
information contained in the sections entitled “Executive Compensation,” “Director Compensation” and “Compensation Committee Interlocks and
Insider Participation” in our Proxy Statement.

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. | 2021 Form 10-K | 133

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

Exhibit
Number

Exhibit Description

Form

SEC File No.

Exhibit

Filing Date

Filed
Herewith

Incorporation by Reference

2.1

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

Asset Purchase Agreement Among SunPower Corporation and
Enphase Energy, Inc. dated June 12, 2018.

Amended and Restated Certificate of Incorporation of Enphase
Energy, Inc.

8-K

8-K

001-35480

001-35480

Certificate of Amendment of the Amended and Restated
Certificate of Incorporation of Enphase Energy, Inc.

10-Q

001-35480

Certificate of Amendment of the Amended and Restated
Certificate of Incorporation of Enphase Energy, Inc.

10-Q

001-35480

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.

8-K

S-8

001-35480

333-181382

Amended and Restated Bylaws of Enphase Energy, Inc.

S-1/A

333-174925

Specimen Common Stock Certificate of Enphase Energy, Inc.

S-1/A

333-174925

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 4.1).

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 4.8).

4.10

Form of 0% Convertible Senior Note due 2028 (included in
Exhibit 4.9).

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

2.1

3.1

3.1

2.1

3.1

4.5

3.5

4.1

4.1

4.1

4.1

4.1

4.2

4.1

4.2

4.1

4.2

6/12/2018

4/6/2012

8/9/2017

8/6/2018

5/27/2020

5/19/2021

3/12/2012

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

Enphase Energy, Inc. | 2021 Form 10-K | 134

    
    
    
    
Table of Contents

4.11

+
10.1

+
10.2

+
10.3

+
10.4

10.5

10.6

10.7

10.8

10.9

Description of Registrant’s Securities Registered Pursuant to
Section 12 of the Securities Exchange Act of 1934, as amended.

Form of Indemnification Agreement by and between Enphase
Energy, Inc. and each of its directors and officers.

S-1/A

333-174925

10.1

8/24/2011

X

2021 Equity Incentive Plan and forms of agreement thereunder.

S-8

333-181382

99.1

5/19/2021

2011 Equity Incentive Plan, as amended, and forms of
agreement thereunder.

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.

Master Development and Production Agreement by and between
Enphase Energy, Inc. and Fujitsu Microelectronics America, Inc.,
dated August 19, 2009.

License and Technology Transfer Agreement by and between
Enphase Energy, Inc. and Ariane Controls, Inc., dated December
21, 2007.

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

10.1

5/6/2015

S-1

333-174925

10.2

6/15/2011

10.10

Software License Agreement by and between PVI Solutions, Inc.
(subsequently known as Enphase Energy, Inc.) and DCD, Digital
Core Design, dated May 8, 2007, as amended.

+
10.11

Non-employee Director Compensation Policy.

+
10.12

Offer Letter by and between Enphase Energy, Inc. and David
Ranhoff, dated December 1, 2017.

+
10.13

Severance and Change in Control Benefit Plan.

10.14

Securities Purchase Agreement, by and among Enphase
Energy, Inc. and the purchasers identified on Exhibit A thereto,
dated January 9, 2017.

S-1

333-174925

10.21

6/15/2011

10-K

8-K

10-Q

001-35480

10.11

2/16/2021

001-35480

10.1

12/5/2017

001-35480

10.5

5/8/2013

8-K

001-35480

10.1

1/10/2017

+
10.15

Offer Letter by and between Enphase Energy, Inc. and Eric
Branderiz, dated December 1, 2018.

10-Q

001-35480

10.1

8/6/2018

10.16

Securities Purchase Agreement, dated August 14, 2018, by and
between Enphase Energy, Inc. and the Rodgers Massey
Revocable Trust dtd 4/4/11.

+
10.17

Performance Bonus Program Summary.

8-K

8-K

001-35480

10.2

8/17/2018

001-35480

10.1

2/6/2019

10.18

†
10.19

†
10.20

#
10.21

#
10.22

Stockholders Agreement, dated as of August 9, 2018, by and
between Enphase Energy, Inc. and SunPower Corporation.

SC 13D

005-86790

SC 13D

8/20/2018

Master Supply Agreement, dated August 9, 2018, between
Enphase Energy, Inc. and SunPower Corporation.

8-K/A

001-35480

99.1

10/23/2018

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.

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

Enphase Energy, Inc. | 2021 Form 10-K | 135

Table of Contents

10.23

#
10.24

10.25

10.26

10.27

10.28

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.

10-K

001-35480

10.23

2/16/2021

10-K

001-35480

10.24

2/16/2021

Bayside Parkway Lease by and between Enphase Energy, Inc.
and Dollinger Bayside Associates, dated April 12, 2018.

10-K

001-35480

10.45

3/15/2019

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).

10.29

Form of Warrant Confirmation (2020).

10.30

Form of Convertible Note Hedge Transaction Confirmation
(2021).

10.31

Form of Warrant Confirmation (2021).

10.32

Additional Call Option Transaction Confirmations (2021).

10.33

Additional Warrant Confirmations (2021).

10.34

Purchase Agreement, dated March 4, 2020 by and among the
Registrant and Barclays Capital Inc.

10.35

Form of Exchange Agreement for the 2025 Notes.

10.36

10.37

10.38

10.39

10.40

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, 2018 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

10.26

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

8-K

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

10.2

10.3

10.2

10.3

10.1

10.2

10.3

10.5

3/9/2020

3/9/2020

3/1/2021

3/1/2021

3/15/2021

3/15/2021

3/9/2020

3/1/2021

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. | 2021 Form 10-K | 136

Table of Contents

+
10.41

Offer Letter, dated January 16, 2018, and 2019 Merit Focal
Review, dated May 10, 2019, to Jeffery McNeil.

10-Q

001-35480

10.4

7/30/2019

21.1

List of Subsidiaries of the Registrant

23.1

24.1

31.1

31.2

32.1*

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.

101.INS

XBRL Instance Document.

101.SCH

XBRL Taxonomy Extension Schema Document.

101.CAL

XBRL Taxonomy Extension Calculation Linkbase Document.

101.DEF

XBRL Taxonomy Extension Definition Linkbase Document.

101.LAB

XBRL Taxonomy Extension Label Linkbase Document.

101.PRE

XBRL Taxonomy Extension Presentation Document.

104

Cover Page Interactive Data File (formatted as Inline XBRL and
contained in Exhibits 101)

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(b)(2) 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 of 2002, and shall not be deemed “filed” by Enphase Energy, Inc. for purposes of
Section 18 of the Securities Exchange Act of 1934, as amended.

Enphase Energy, Inc. | 2021 Form 10-K | 137

Table of Contents

Item 16.    Form 10-K Summary

Not Applicable

Enphase Energy, Inc. | 2021 Form 10-K | 138

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 11, 2022.

SIGNATURES

Enphase Energy, Inc.

By:

/s/ BADRINARAYANAN KOTHANDARAMAN
Badrinarayanan Kothandaraman
President and Chief Executive Officer

Enphase Energy, Inc. | 2021 Form 10-K | 139

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 Eric Branderiz, jointly and severally, as his true and lawful attorneys-in-fact and agents, with full power of
substitution and resubstitution, for him and in his 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
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

President and Chief Executive Officer
(Principal Executive Officer)

/s/ ERIC BRANDERIZ

Eric Branderiz

/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

Executive Vice President and Chief Financial Officer
(Principal Financial Officer)

Vice President, Chief Accounting Officer and Treasurer
(Principal Accounting Officer)

Director

Director

Director

Director

Director

Director

February 11, 2022

February 11, 2022

February 11, 2022

February 11, 2022

February 11, 2022

February 11, 2022

February 11, 2022

February 11, 2022

February 11, 2022

Enphase Energy, Inc. | 2021 Form 10-K | 140

DESCRIPTION OF CAPITAL STOCK

Exhibit 4.11

General

Enphase Energy, Inc., or the Company, is authorized to issue up to 300,000,000 shares of common stock, $0.00001 par value per share, or

common stock, and 10,000,000 shares of preferred stock, $0.00001 par value per share, or preferred stock.

The following summary description is based on the provisions of our certificate of incorporation, our amended and restated bylaws and the
applicable provisions of the Delaware General Corporation Law. This information may not be complete in all respects and is qualified entirely by
reference to the provisions of our certificate of incorporation, our amended and restated bylaws and the Delaware General Corporation Law. Our
certificate  of  incorporation  and  our  amended  and  restated  bylaws  are  filed  as  exhibits  to  this  Annual  Report  on  Form  10-K  to  which  this
Description of Capital Stock is an exhibit.

Common stock

General. The following is a description of our common stock, which is the only security of the Company registered pursuant to Section 12 of

the Securities Exchange Act of 1934, as amended, or the Exchange Act.

Dividend rights.  Subject  to  preferences  that  may  apply  to  shares  of  preferred  stock  outstanding  at  the  time,  the  holders  of  outstanding
shares of our common stock are entitled to receive dividends out of funds legally available if our board of directors, in its discretion, determines to
declare dividends and then only at the times and in the amounts that our board of directors may determine.

Voting rights. Each holder of common stock is entitled to one vote for each share of common stock held on all matters submitted to a vote
of stockholders. Our certificate of incorporation does not provide for the right of stockholders to cumulate votes for the election of directors. Our
certificate of incorporation establishes a classified board of directors, which is divided into three classes with staggered three-year terms. Only
one  class  of  directors  will  be  elected  at  each  annual  meeting  of  our  stockholders,  with  the  other  classes  continuing  for  the  remainder  of  their
respective  three-year  terms.  These  provisions  in  our  amended  and  restated  certificate  of  incorporation  could  discourage  potential  takeover
attempts. See “Anti-Takeover Effects of Delaware Law and Our Charter Documents” below.

No  preemptive  or  similar  rights.  Our  common  stock  is  not  entitled  to  preemptive  rights  and  is  not  subject  to  conversion  or  redemption
provisions. The rights, preferences and privileges of the holders of our common stock are subject to, and may be adversely affected by, the rights
of the holders of any series of our preferred stock that we may designate and issue in the future.

Right to receive liquidation distributions. Upon our dissolution, liquidation or winding-up, the assets legally available for distribution to our
stockholders are distributable ratably among the holders of our common stock, subject to prior satisfaction of all outstanding debt and liabilities
and the preferential rights and payment of liquidation preferences, if any, on any outstanding shares of preferred stock.

The rights of the holders of our common stock are subject to, and may be adversely affected by, the rights of holders of shares of any preferred
stock that we may designate and issue in the future.

Preferred stock

We are authorized, subject to limitations prescribed by Delaware law, to issue up to 10,000,000 shares of preferred stock in one or more
series  established  by  our  board  of  directors.  Our  board  of  directors  is  authorized  to  establish  from  time  to  time  the  number  of  shares  to  be
included  in  each  series  and  to  fix  the  designation,  powers,  preferences  and  rights  of  the  shares  of  each  series  and  any  of  its  qualifications,
limitations or restrictions. Our board of directors can also increase or decrease the number of shares of any series, but not below the number of
shares of that series then outstanding, without any further vote or action by our stockholders. Our board of directors may authorize the issuance
of preferred stock with voting or conversion rights that could adversely affect the voting power or other rights of the holders of the common stock.
The issuance of preferred stock, while providing flexibility in connection with possible acquisitions and other corporate purposes, could, among
other things, have the effect of delaying, deferring, discouraging or preventing a change in control of the Company and may adversely affect the
market price of our common stock and the voting and other rights of the holders of our common stock.

Anti-Takeover Effects of Delaware Law and Our Charter Documents 

Some  of  the  provisions  of  Delaware  law  may  have  the  effect  of  delaying,  deferring,  discouraging  or  preventing  another  person  from

acquiring control of the Company.

We  are  subject  to  Section  203  of  the  Delaware  General  Corporation  Law,  which  prohibits  a  Delaware  corporation  from  engaging  in  any
business  combination  with  any  interested  stockholder  for  a  period  of  three  years  after  the  date  that  such  stockholder  became  an  interested
stockholder, with the following exceptions:

• before such date, the board of directors of the corporation approved either the business combination or the transaction that resulted in

the stockholder becoming an interested stockholder;

• upon closing of the transaction that resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at
least 85% of the voting stock of the corporation outstanding at the time the transaction began, excluding for purposes of determining the
voting stock outstanding (but not the outstanding voting stock owned by the interested stockholder) those shares owned by (1) persons
who  are  directors  and  also  officers  and  (2)  employee  stock  plans  in  which  employee  participants  do  not  have  the  right  to  determine
confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

• on or after such date, the business combination is approved by the board of directors and authorized at an annual or special meeting of
the stockholders, and not by written consent, by the affirmative vote of at least 66 2/3% of the outstanding voting stock that is not owned
by the interested stockholder.

In general, Section 203 defines business combination to include the following:

• any merger or consolidation involving the corporation and the interested stockholder;

• any sale, transfer, pledge or other disposition of 10% or more of the assets of the corporation involving the interested stockholder;

• subject to certain exceptions, any transaction that results in the issuance or transfer by the corporation of any stock of the corporation to

the interested stockholder;

• any transaction involving the corporation that has the effect of increasing the proportionate share of the stock or any class or series of the

corporation beneficially owned by the interested stockholder; or

• the  receipt  by  the  interested  stockholder  of  the  benefit  of  any  loss,  advances,  guarantees,  pledges  or  other  financial  benefits  by  or

through the corporation.

In general, Section 203 defines an “interested stockholder” as an entity or person who, together with the person’s affiliates and associates,
beneficially owns, or within three years prior to the time of determination of interested stockholder status did own, 15% or more of the outstanding
voting stock of the corporation.

A Delaware corporation may “opt out” of these provisions with an express provision in its original certificate of incorporation or an express
provision in its certificate of incorporation or bylaws resulting from a stockholders’ amendment approved by at least a majority of the outstanding
voting shares. We have not elected to “opt out” of these provisions. The statute could prohibit or delay mergers or other takeover or change in
control attempts and, accordingly, may discourage attempts to acquire us. Certain provisions in our certificate of incorporation and our amended
and restated bylaws could have an effect of delaying, deferring or preventing a change in control.

Choice of Forum

Our certificate of incorporation provides that the Court of Chancery of the State of Delaware will be the exclusive forum for any derivative
action or proceeding brought on our behalf, any action asserting a breach of fiduciary duty owed by any director, officer or employee to us or our
stockholders, any action asserting a claim against us arising pursuant to the Delaware General Corporation Law or any action asserting a claim
against us that is governed by the internal affairs doctrine. While the Delaware courts have determined that such choice of forum provisions are
facially valid, a stockholder may nevertheless seek to bring a claim in a venue other than those designated in the exclusive forum provisions.

Legal Name
Enphase Energy Australia Pty. Ltd.
Enphase Energy Canada, Inc.

Enphase Energy S.A.S.

Enphase Energy NL B.V.

Enphase Energy New Zealand
Enphase Energy International LLC

Enphase Solar Energy India Pvt. Limited

Enphase Energy Mexico, S. DE R.L. DE C.V.

Enphase Energy S.r.l.
Enphase Energy Canada Holdings, Inc.

Enphase Service Company, LLC

365 Pronto, Inc.

ClipperCreek, Inc.
Enphase Energy Technology (Shanghai) Co. Ltd.

Enphase Brasil Energia Solar LTDA

SUBSIDIARIES OF REGISTRANT*

Exhibit 21.1

Percent Owned
100.0%
100.0%

100.0%

100.0%

100.0%
100.0%

100.0%

100.0%

100.0%
100.0%

100.0%

100.0%

100.0%
100.0%

100.0%

Jurisdiction
Australia
Canada

France

Netherlands

New Zealand
Delaware

India

Mexico

Italy
Canada

California

Delaware

Delaware
China

Brazil

*    All subsidiaries of Enphase Energy, Inc. are wholly owned, directly or indirectly as of December 31, 2021.

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 23.1

We consent to the incorporation by reference in Registration Statement No. 333-230716, 333-228775, 333-228774, 333-224101, 333-

216886, 333-209315 and 333-195694 on Form S-3 and Registration Statement Nos. 333-256290, 333-253228,333-238997 ,333-224103, 333-
230314, 333-216986, 333-210037, 333-202630, 333-194749, 333-187057, and 333-181382 on Form S-8 of our reports dated February 11, 2022,
relating to the financial statements of Enphase Energy, Inc. and the effectiveness of Enphase Energy, Inc.'s internal control over financial
reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2021.

/s/ DELOITTE & TOUCHE LLP 

San Francisco, California

February 11, 2022

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

Exhibit 31.1

I, Badrinarayanan Kothandaraman, certify that:

1.

I have reviewed this Form 10-K of Enphase Energy, Inc.;

CERTIFICATION

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to

make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period
covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects

the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as

defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-
15(f) and 15(d)-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our
supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to
us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under
our supervision, 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;

c. evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions

about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such
evaluation; and

d. disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's
most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is
reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial

reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent
functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are
reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s

internal control over financial reporting.

Date: February 11, 2022

/s/ BADRINARAYANAN KOTHANDARAMAN
Badrinarayanan Kothandaraman
President and Chief Executive Officer
(Principal Executive Officer)

Exhibit 31.2

I, Eric Branderiz, certify that:

1.

I have reviewed this Form 10-K of Enphase Energy, Inc.;

CERTIFICATION

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to

make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period
covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects

the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as

defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-
15(f) and 15(d)-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our
supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to
us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under
our supervision, 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;

c. evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions

about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such
evaluation; and

d. disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's
most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is
reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial

reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent
functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are
reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s

internal control over financial reporting.

Date: February 11, 2022

/s/ ERIC BRANDERIZ
Eric Branderiz
Executive Vice President and Chief Financial Officer
(Principal Financial Officer)

CERTIFICATION

Exhibit 32.1

Pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, (the “Exchange Act”) and Section
1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. §1350), Badrinarayanan Kothandaraman, President and Chief Executive
Officer of Enphase Energy, Inc. (the “Company”), and Eric Branderiz, Executive Vice President and Chief Financial Officer of the Company, each
hereby certifies that, to the best of his or her knowledge:

1. The Company’s Annual Report on Form 10-K for the period ended December 31, 2021, to which this Certification is attached as Exhibit 32.1
(the “Periodic Report”), fully complies with the requirements of Section 13(a) or Section 15(d) of the Exchange Act; and

2. The information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the
Company.

In Witness Whereof, the undersigned have set their hands hereto as of the 11th day of February, 2022.

/s/ BADRINARAYANAN KOTHANDARAMAN
Badrinarayanan Kothandaraman
President and Chief Executive Officer

/s/ ERIC BRANDERIZ
Eric Branderiz
Executive Vice President and Chief Financial Officer

This certification accompanies the Form 10-K to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to
be incorporated by reference into any filing of Enphase Energy, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange
Act of 1934, as amended (whether made before or after the date of the Form 10-K), irrespective of any general incorporation language contained
in such filing.