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Enphase Energy

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FY2020 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

☐ 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

For the fiscal year ended December 31, 2020

or

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 ☐

    
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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, 2020, based upon the closing price of $47.57 of the registrant’s common stock as reported on the
Nasdaq Global Market, was approximately $4.0 billion.

As of February 8, 2021, there were 129,021,311 shares of the registrant’s common stock outstanding.

Portions of the registrant’s Proxy Statement for the 2021 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, 2020 are incorporated by reference into Part III of this Annual Report on Form 10-K.

DOCUMENTS INCORPORATED BY REFERENCE

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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 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
Selected Consolidated Financial Data
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

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 Accounting Fees and Services

PART IV

PART III

Exhibits, Financial Statement Schedules
Form 10-K Summary
Signatures

Page

7
15
49
50
50
51

52
53
55
70
73
130
130
130

131
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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.

Enphase Energy, Inc. | 2020 Form 10-K | 4

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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:

•

•

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.

• Our business is currently being adversely affected and could be materially and adversely affected in the future by the 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
customers’ financial condition and our business.

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

these contract manufacturers.

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

able to deliver our products to our customers.

•

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 gross margin and our business.

• Manufacturing problems could result in delays in product shipments to customers 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 consumers, and the failure of these resellers to perform at the

expected level, or at all, would have an adverse effect on our business, financial condition and results of operations.

•

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

• U.S. government actions with regard to the solar energy sector or international trade could materially harm our business, financial condition and results of operations.

•

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

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

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

• We may fail to capture customers in the new product and geographic markets that we are pursuing, which would prevent us from increasing our revenue and market share.

• Our microinverter systems, including our storage solution, integrated AC Module, eighth-generation IQ microinverters and Ensemble technology, may not achieve broader

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

•

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.

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

Enphase Energy, Inc. | 2020 Form 10-K | 5

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

• Defects and poor performance in our products could result in loss of customers, decreased revenue and unexpected expenses, and increases in warranty, indemnity and

product liability claims arising from defective products.

•

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.

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

•

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.

• We could be subject to breaches of our information technology systems, which could cause significant reputational, legal and financial damages. Any unauthorized access

to, or disclosure or theft of personal information we gather, store or use could harm our reputation and subject us to claims or litigation.

•

•

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

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.

• Conversion of our Convertible Notes may dilute the ownership interest of existing stockholders or may otherwise depress the price of our common stock. The convertible

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

Enphase Energy, Inc. | 2020 Form 10-K | 6

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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 single 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  32  million
microinverters, and approximately 1.4 million Enphase residential and commercial systems have been deployed in more than 130 countries.

COVID-19 update

The  ongoing  COVID-19  pandemic  (“COVID-19”)  continues  to  cause  disruptions  and  uncertainties,  including  in  the  core  markets  in  which  we  operate.  The  COVID-19
pandemic  has  significantly  curtailed  the  movement  of  people,  goods  and  services  and  had  a  notable  impact  on  general  economic  conditions  including  but  not  limited  to  the
temporary closures of many businesses, “shelter in place” orders and other governmental regulations, and reduced consumer spending. The most significant near-term impacts of
COVID-19 on our financial performance are a decline in sales orders as future residential and commercial system owners are canceling sales meetings with system installation
professionals or postponing system installations. As the purchase of new solar energy management solutions declines as part of the impact of COVID-19 on consumer spending,
many businesses through which we distribute our products are working at limited operational capacity. The extent of the impact of COVID-19 on our future operational and financial
performance  will  depend  on  various  future  developments,  including  the  duration  and  spread  of  the  outbreak,  duration  of  employees  working  remotely,  impact  on  our  customers,
effect on our sales cycles or costs, and effect on our supply chain and vendors, all of which are uncertain and cannot be predicted, but which could have a material adverse effect
on our business, results of operations or financial condition. 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  DC
combiners,  conduits  and  disconnects.  In  addition,  the  use  of  high-voltage  direct  current  (“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.

Enphase Energy, Inc. | 2020 Form 10-K | 7

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•

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.

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 Home Energy Solution with IQ™ platform, which is 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  Home  Energy  Solution  with  IQ™  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 Home Energy Solution with IQ uses a single technology platform for seamless management of
the  whole  solution,  enabling  rapid  commissioning  with  the  Installer  Toolkit™;  consumption  monitoring  with  our  Envoy™  Communications  Gateway  with  IQ  Combiner+,  Enphase
Enlighten,  a  cloud-based  energy  management  platform,  and  our  Enphase  AC  Battery™.  System  owners  can  use  Enphase  Enlighten  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  IQ  7™  microinverter  and  Enphase  IQ  7+™  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 IQ 7X™ microinverter addresses 96-cell photovoltaic (“PV”) modules up to 400W direct DC and with its 97.5%
California Energy Commission (“CEC”) efficiency rating, is ideal for integration into high power modules.

Enphase Energy, Inc. | 2020 Form 10-K | 8

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During 2020, we started shipping our IQ 7A™ for high-power monofacial and bifacial solar modules to customers in Australia and Europe. Our IQ 7A 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 IQ 7A microinverter with monofacial or bifacial solar modules, up 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 continued to make steady progress during the fourth quarter of 2020 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.

During 2020, we introduced to customers in North America our Enphase storage system, featuring our Ensemble™ management technology, which powers the world’s first
grid-independent microinverter-based storage system. Our next-generation battery in North America is Enphase Encharge 10™ or Encharge 3™ storage systems, with usable and
scalable capacity of 10.1 kWh and 3.4 kWh, respectively. Enphase Encharge™ 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  compatible  with  both  new  and  existing
Enphase IQ solar systems with IQ 6™, IQ 7™, M215 and M250 microinverters and provide a simple upgrade path for our existing solar customers. We started production shipments
of Enphase Encharge storage systems to customers in North America during the second quarter of 2020.

We expect further revisions of our storage products with Ensemble technology to be released in 2021, with a focus on the grid-agnostic IQ 8 PV microinverter for residential
installations. Our next-generation IQ 8™ system is based upon our Always On Enphase Ensemble™ energy management technology. This system has five components: 1) energy
generation, which is accomplished with the grid-agnostic microinverter IQ 8; 2) energy storage, which is achieved by the Encharge™ battery with capacities of 10.1 kWh and 3.4
kWh;  3)  Enpower™  smart  switch,  which  includes  a  microgrid  interconnect  device  (“MID”);  4)  communication  and  control  via  the  combiner  box  with  the  Envoy  gateway;  and  5)
Enlighten, which is the internet of things (“IoT”), cloud software.

The  advantage  of  IQ  8s  on  the  roof  will  be  that  these  grid-forming  microinverters  produce  power  from  panels  even  during  blackouts,  as  long  as  the  sun  is  still  shining.  It

addresses a major drawback of traditional solar installations without the need for storage and is differentiated in that respect.

We also expect to introduce both Enphase IQ 8D™ for commercial solar purposes and Ensemble-in-a Box, an off-grid solar and storage system.

Our Strategy

Our objective is to be the leading provider of energy management solutions worldwide. 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 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.

Enphase Energy, Inc. | 2020 Form 10-K | 9

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•

•

•

Increase power and efficiency and reduce cost per watt. Our engineering team is focused on continuing to increase average power conversion efficiency above 97% and
AC  output  power  beyond  350  watts  in  order  to  pair  with  DC  modules  rated  over  400  watts.  We  intend  to  continue  to  leverage  our  semiconductor  integration,  power
electronics expertise and manufacturing economies of scale to further reduce cost per watt.

Extend our technological innovation. We distinguish ourselves from other inverter companies with our systems-based and high technology approach, and the ability to
leverage strong research and development capabilities.

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.

Customers and Sales

We currently offer solutions targeting the residential and commercial markets in the U.S., Canada, Mexico, Central American markets, Europe, Australia, New Zealand, India
and certain other Asian markets. We sell our solutions primarily to solar distributors who resell to installers and integrators, who in turn integrate our products into complete solar PV
installations for residential and commercial system owners. We work with many of the leading solar and electrical distributors. In addition to our distributors, we sell directly to large
installers, original equipment manufacturers (“OEM”), strategic partners and homeowners. Our OEM customers include solar module manufacturers who bundle our products and
solutions with their solar module products and resell to both distributors and installers. We also sell certain products and services directly to the homeowners and the do-it-yourself
market through our legacy product upgrade program or our online store. Strategic partners include a variety of companies including industrial equipment suppliers and providers of
solar financing solutions. In 2020, one customer accounted for approximately 29% of total net revenues. The revenues generated from the U.S. market have represented 82%, 84%
and 69% of our total revenue for annual period ending on December 31, 2020, 2019 and 2018, respectively.

Manufacturing, Quality Control and Key Suppliers

We outsource the manufacturing of our products to manufacturing partners. Flex Ltd. and affiliates (“Flex”) and Salcomp Manufacturing India Pvt. Ltd. (“Salcomp”) assemble
and test our microinverter, AC 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  batteries  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 and Salcomp provides us with strategic manufacturing capabilities and flexibility. In the beginning of the second quarter of 2019, we announced the
first  shipment  of  seventh-generation  Enphase  IQ   microinverters  produced  in  Mexico  as  part  of  our  expanded  manufacturing  agreement  with  Flex.  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. Our Net
Promoter  Score  (commonly  referred  to  as  “NPS”)  improved  from  52%  in  2019  to  65%  in  2020  through  multiple  customer  service  initiatives.  In  2020,  the  service  organization
achieved average wait time of under 3 minutes.

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Research and Development

We  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.

Intellectual Property

We  operate  in  an  industry  in  which  innovation,  investment  in  new  ideas  and  protection  of  our  intellectual  property  (“IP”),  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, 2020, we had 234 issued U.S. patents, 80 issued foreign patents, 60 pending U.S. patent applications and 33
pending foreign counterpart patent applications. Our issued patents are scheduled to expire between years 2021 and 2040.

We  license  certain  power  line  communications  technology  and  software  for  integration  into  our  custom  application  specific  integrated  circuits  (“ASIC”s),  under  a  fully-paid,
royalty-free  license,  which  includes  the  right  for  us  to  source  directly  from  the  licensor’s  suppliers  or  manufacture  certain  ASIC  hardware  should  the  licensor  fail,  under  certain
conditions, to deliver such technology in the future. This license includes a limited exclusivity period during which the licensor has agreed not to license the licensed technology to
any  third-party  manufacturer  of  electronic  components  or  systems  for  use  in  the  solar  energy  market.  The  license  carries  a  75-year  term,  subject  to  earlier  termination  upon
agreement of the parties, or by us in connection with the insolvency of the licensor.

We also license digital intellectual property cores, or IP blocks, for integration into and distribution with certain electronic components built into our products, including our
ASICs,  complex  programmable  logic  devices  (“CPLDs”),  and  field-programmable  gate  arrays  or  FPGAs.  This  is  a  fully-paid,  non-exclusive,  non-transferable,  royalty-free  license
providing for the integration of such digital IP blocks in an unlimited number of electronic component designs and the distribution of such electronic components with our products.
Other than in connection with the distribution of our products, our use of such digital IP blocks is limited to certain of our business sites. The license is perpetual, subject to earlier
termination by either party upon the termination, suspension or insolvency of the other party’s business, or by the licensor upon a breach of the license agreement by us. In addition,
we license open source software from third parties for integration into our Envoy products. Such open source software is licensed under open source licenses. These licenses are
perpetual and require us to attribute the source of the software to the original software developer, which we provide via our website.

We  continually  assess  the  need  for  patent  protection  for  those  aspects  of  our  technology,  designs  and  methodologies  and  processes  that  we  believe  provide  significant
competitive  advantages.  A  majority  of  our  patents  relate  to  DC  to  AC  power  conversion  and  energy  storage  for  alternative  energy  power  systems,  as  well  as  power  system
monitoring, control and management systems.

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 registered trademarks and service marks in the U.S. and in other countries, including Enphase, Ensemble, Encharge Envoy, Enpower and

Enlighten, and 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 issues and require our employees to assign to us all of the inventions, designs and technologies they develop during the course of employment with us.

We also require our customers and business partners to enter into confidentiality agreements before we disclose any sensitive aspects of our technology or business plans.

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As part of our overall strategy to protect our intellectual property, we may take legal actions to prevent third parties from infringing upon or misappropriating our intellectual

property or from otherwise gaining access to our technology.

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 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 also data privacy and security laws to which we are currently, and/or may in the future, be subject. The U.S., federal government, individual U.S. states, EU member
countries and other jurisdictions, including Switzerland, have adopted data protection laws and regulations which impose significant compliance obligations. Moreover, the collection
and use of personal health data in the EU is governed by the provisions of the EU General Data Protection Regulation (“GDPR”).

The GDPR, which is wide-ranging in scope, imposes several requirements relating to 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 out 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, including in clinical trials, 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.  It  is  also  possible  that  local  data  protection  authorities  may  have  different
interpretations of the GDPR, leading to potential inconsistencies amongst various EU member states.

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Additionally,  in  June  2018,  the  state  of  California  enacted  the  California  Consumer  Privacy  Act  of  2018  (“CCPA”),  which  contains  requirements  similar  to  GDPR  for  the
handling of personal information of California residents, which became effective in January 2020. 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), provide such consumers
new ways to opt-out of certain sales of personal information, and allow for a new cause of action for data breaches. It remains unclear how the CCPA will be interpreted, but as
currently written, it will likely impact our business activities and exemplifies the vulnerability of our business to not only cyber threats but also the evolving regulatory environment
related to personal data. As we expand our operations, the CCPA may increase our compliance costs and potential liability. Some observers have noted that the CCPA could mark
the beginning of a trend toward more stringent privacy legislation in the United States. Additionally, other states are beginning to pass similar laws.

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.

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 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:

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product performance and features;

total cost of ownership;

breadth of product line;

local sales and distribution capabilities;

• module compatibility and interoperability;

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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;

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•

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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, 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, 2020, we had 850 full-time employees. Of the full-time employees, 369 were engaged in research and development, 302 in sales and marketing, 96 in
general  and  administration  and  83  in  manufacturing  and  operations.  Of  these  employees,  321  were  in  the  United  States,  352  in  India,  82  in  New  Zealand,  44  in  Europe,  16  in
Australia, 18 in China,16 in Mexico and 1 in Canada.

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 to “Advance a sustainable future for all,” all employees are expected to uphold the following core values that drive our culture:

• Customer First

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Integrity

Innovation

Teamwork

• Quality

These core values are represented by teamwork, performance and reward system. Values are reinforced in new hire training, culture workshops and everyday interactions.

Talent

Successful execution of our strategy is dependent on attracting, continuous career development and retention of key employees and members of our management team. The
skills,  experience  and  industry  knowledge  of  our  employees  significantly  benefit  our  operations  and  financial  performance.  We  continuously  evaluate,  modify,  and  enhance  our
internal processes and technologies to increase employee engagement, productivity, and efficiency.

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.

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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 the company. We provide competitive compensation programs that focus on the following five key elements:

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Pay-for-performance: Reward and recognize leading contributors and high potential employees by targeting the 65  percentile of market for total direct compensation, which
includes base salary, quarterly bonus, and stock-based compensation;

th

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

Internal equity: Providing for fair pay relationships within our organization;

Fiscal responsibility: Providing affordable programs that are compliant with the local laws; and

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

Health and Wellness

We are committed to providing our employees with competitive and comprehensive benefits packages. Our benefits packages provide a balance of protection along with the

flexibility to meet the individual health and wellness needs of our employees.

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 (“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

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 microinverter and AC 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:

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

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

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

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

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

prices of traditional utility-provided energy sources;

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

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

If demand for solar energy solutions does not grow, demand for our customers’ products as well as demand for our products will decrease, which would have an adverse

impact on our ability to increase our revenue and grow our business.

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. As a result of the ongoing
COVID-19 pandemic, the demand for solar energy solutions decreased in the second and third quarters of 2020 compared to the same quarters of the prior year. 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.

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We  depend  on  sole-source  and  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.

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.

Our business has been affected by, is currently being adversely affected and could be materially and adversely affected in the future by the evolving effects of the ongoing
COVID-19 pandemic. The ongoing COVID-19 pandemic also continues to have worldwide impact resulting in a global slowdown of economic activity which has decreased demand
for a broad variety of goods and services, including from our customers, while also disrupting sales channels and marketing activities. As a result, the ongoing COVID-19 pandemic
has had a negative impact on our sales and our results of operations. We are closely evaluating the impacts of the evolving effects of the COVID-19 pandemic on our ability, and the
ability of our third-party partners to effectively market, maintain supply, sell and distribute our products. Further, even though vaccine programs have recently been initiated, there is
no current indication whether these vaccine programs will be effective. We are currently unable to predict how long the COVID-19 pandemic will continue, whether vaccinations or
other actions will contain the pandemic, and the extent and duration of the pandemic’s continued impact on our current or future performance.

Among other impacts, the COVID-19 pandemic and associated governmental orders, including the various “shelter-in-place” orders, slowed the demand for our products, and
we expect the pandemic will continue to reduce demand for our products and impede or cause temporary and long-term disruptions in solar installations, our supply chains and/or
delays in the delivery of our products. The most significant near-term impacts of COVID-19 on our financial performance have been a decline in sales orders as future residential
and  commercial  system  owners  are  canceling  sales  meetings  with  system  installation  professionals  or  postponing  system  installations.  As  the  purchase  of  new  solar  energy
management solutions declines as part of the impact of the COVID-19 pandemic on consumer spending, many businesses through which we distribute our products are working at
limited operational capacity.

Moreover, the COVID-19 pandemic and associated governmental orders could require or cause employees to continue to “shelter-in-place” for longer periods of time, which
could adversely affect our ability to adequately staff and manage our businesses. While our field-based personnel are engaging in limited in-person interactions, they are primarily
using  electronic  communication,  such  as  emails,  phone  calls  and  video  conferences.  We  expect  the  different  quality  of  electronic  interactions  as  compared  with  in-person
interactions, as well as the reduced quantity of interactions during the COVID-19 pandemic, to reduce the effectiveness of our sales personnel, as well as those of our partners,
which have and could negatively affect our sales and future revenue. Further, such risks could also adversely affect our customers' financial condition, resulting in reduced spending
for our solar products.

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  market  for  the
semiconductors has been disrupted by the

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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
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 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 sole-source and 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  Ltd.  and  affiliates  (“Flex”),  and  Salcomp  Manufacturing  India  Pvt.  Ltd.  (“Salcomp”)  assemble  and  test  our
microinverter,  AC  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,  2020  our  related  purchase  obligations
(including amounts related to component inventory procured by our primary contract manufacturers on our behalf) were approximately $162.2 million. The timing of purchases in
future periods could differ materially from our estimates due to fluctuations in demand requirements related to varying sales levels as well as changes in economic conditions.

Flex  also  provides  receiving,  kitting,  storage,  transportation,  inventory  visibility  and  other  value-added  logistics  services  at  locations  managed  by  Flex.  Hong  Kong  Sinbon
Industrial Limited manufactures our custom AC cables. During the fourth quarter of 2020, we qualified Amperex Technology Limited in addition to A123 Systems LLC as our lithium-
ion  batteries  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.

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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.

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.

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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.

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. 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.

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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.

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, 2020, one customer accounted for approximately 29% of total net revenues. Further, as of December 31, 2020, amounts due from
one  customer  represented  approximately  36%  of  the  total  accounts  receivable  balance,  and  amounts  due  from  three  customers  represented  34%,  14%  and  11%  of  the  total
accounts receivable balance as of December 31, 2019. 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.

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Our  microinverter  systems,  including  our  storage  solution,  integrated  AC  Module,  eighth-generation  IQ  microinverters  and  Ensemble  technology,  may  not  achieve
broader market acceptance, which would prevent us from increasing our revenue and market share.

If  we  fail  to  achieve  broader  market  acceptance  of  our  products,  including  international  acceptance  of  our  eighth-generation  IQ  microinverters  and  Ensemble  technology
announced  in  the  fourth  quarter  of  2019  and  for  which  product  shipments  commenced  during  the  second  quarter  of  2020,  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 will be impacted by a number of
factors, including:

•

•

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

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

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

performance;

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

reliability and performance;

•

•

•

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

our ability to develop products 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.

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;

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•

•

•

•

•

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 Foreign Corrupt Practices Act and
UK 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.

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 eight-generation IQ microinverters and Ensemble technology. We started production shipments of Ensemble technology to
customers in North America during the second quarter of 2020. 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.

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

We  provide  our  customers  online  tools  to  help  them  determine  proper  system  sizing  and  configurations,  estimates  of  bill  savings,  and  potential  revenues  resulting  from
executing a specific curtailment strategy. These estimates are in turn based on a number of factors such as customer tariff structures, estimated wholesale electricity prices 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.

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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
California Consumer Privacy Act (“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.  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.

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

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

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. The relationship between the United Kingdom and the EU in relation to certain aspects of data protection law remains unclear, for example around how data can
lawfully be transferred between each jurisdiction, which exposes us to further compliance risk.

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 California Consumer Privacy Act of
2018 and other laws could lead to significant fines and require onerous corrective action. In addition,

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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.

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.

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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.

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:

•

•

•

•

•

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.

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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.

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

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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.

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.

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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,
on September 24, 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 15, 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, on March 26, 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 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. As of December 31, 2020, we have 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. For the year ended
December  31,  2020,  we  recorded  $38.9  million  as  a  reduction  to  cost  of  revenues  in  our  consolidated  statements  of  operations  as  the  approved  refunds  relate  to  paid  tariffs
previously recorded to cost of revenues. Therefore, we recorded the corresponding approved tariff refunds as credits to cost of revenues in the current period. For the year ended
December 31, 2020, we recorded the $0.6 million accrued interest as interest income in our consolidated statement of operations. The tariff refund receivable of $14.7 million is
recorded  as  a  reduction  of  accounts  payable  to  Flex  Ltd.  and  affiliates,  our  manufacturing  partner  and  the  importer  of  record  who  will  first  receive  the  tariff  refunds,  on  the
consolidated balance sheet as of December 31, 2020. This exemption has 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

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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,  2020,  approximately  41%  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.

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;

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.

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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. Foreign Corrupt Practices Act (“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.

Risks Related to Our Financial Condition and Liquidity

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.

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  82%,  84%  and  69%  of  our  total  revenue  for  annual  period  ending  on  December  31,  2020,  2019  and  2018,  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 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.

Although we had net income in the past two years, we cannot be certain that we will sustain profitability.

We had net income of $134.0 million and $161.1 million in the years ended December 31, 2020 and 2019, respectively, compared to the year ended December 31, 2018
where we incurred a net loss of $11.6 million. We incurred substantial net losses from our inception through the year ended December 31, 2018, and we may not be able to sustain
profitability and may incur additional losses in the future. At December 31, 2020, we had an accumulated deficit of $51.2 million. Our revenue growth may slow or revenue may
decline for a number of reasons, many of which are outside our control, including a decline in demand for our offerings, increased competition, a decrease in the growth of the solar
industry or our market share, future declines in average selling prices of our products, the impact of U.S. trade tariffs, the imposition of additional tariffs applicable to our industry or
our products, or our failure to capitalize on growth opportunities. If we fail to generate sufficient revenue to support our operations, we may not be able to sustain profitability.

Risks Related to our Acquisition Activity

The  failure  to  successfully  develop  new  generation  products  that  are  compatible  with  those  of  SunPower  could  have  a  material  adverse  effect  on  our  business,
financial condition and results of operations.

Our  failure  to  continue  to  successfully  integrate  our  microinverter  products  and  software  with  SunPower’s  solar  modules  could  negatively  impact  our  revenue  projections,

impair goodwill, intangible assets recognized, and otherwise have a material adverse effect on our business, financial condition and results of operations.

As  of  December  31,  2020,  we  have  $28.5  million  of  finite-lived  intangible  assets,  net  for  developed  technology  and  customer  relationship  and  $21.1  million  of  goodwill
acquired from SunPower pursuant to the Asset Purchase Agreement transaction with SunPower in August 2018 (the “SunPower APA”). We make assumptions and estimates in this
assessment which are complex and often subjective. Our judgement and estimates can be affected by a variety of factors, including external factors such as industry and economic
trends, and internal factors such as changes in our business strategy or our internal forecasts. To the extent that the factors described above change, we could be required to record
additional non-cash impairment charges in the future, which could negatively affect our results of operations.

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.

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Additionally, in connection with the SunPower APA transaction, SunPower acquired 7.5 million shares of our common stock and has the right to designate one member of our
board of directors. Through its share ownership and board seat, SunPower may have the ability to directly or indirectly influence our business, and conflicts may arise between us
and SunPower regarding corporate priorities and strategic objectives. As of December 31, 2020, SunPower held 3.5 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  into  new  sales  territories.  For  example,  in
January 2021, we acquired Sofdesk Inc., a cloud-based solar energy software company, to extend our solar offering through digital transformation, and on February 8, 2021 we
announced our pending acquisition of the solar design services business of DIN Engineering Services LLP. Acquisitions involve numerous risks and challenges, including but not
limited to the following:

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

higher than anticipated acquisition and integration costs and expenses;

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

growing or maintaining revenues to justify the purchase price and the increased expenses associated with acquisitions;

entering into territories or markets with which we have limited or no prior experience;

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

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

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

inability to implement uniform standards, disclosure controls and procedures, internal controls over financial reporting and other procedures and policies in a timely manner;

inability to realize the anticipated benefits of or successfully integrate with our existing business the businesses, products, technologies or personnel that we acquire; and

potential post-closing disputes.

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.

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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.

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 2020, we issued and sold a total of $320.0 million aggregate principal amount of our 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 convertible senior notes due 2024 (the “Notes due 2024”).

In August 2018, we issued and sold a total of $65.0 million aggregate principal amount of our 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  2024  was  met  for  all  quarters  ended  March  31,  2020  through  December  31,  2020.  Therefore,  our  Notes  due  2024  became
convertible at the holders’ option beginning on April 1, 2020 and continue to be convertible through March 31, 2021. Accordingly, we classified the net carrying amount of the Notes
due 2024 of $69.0 million as debt, current on the consolidated balance sheet as of December 31, 2020. From January 1, 2021 through February 12, 2021, we have received the
request for conversion of approximately $61.5 million in principal amount of our Notes due 2024, of which we have elected to settle the aggregate principal amount of the Notes due
2024 in a combination of cash and any excess in shares of our common stock in accordance with the applicable indenture. Such conversion will be settled in March 2021. We may
purchase shares under the convertible note hedge to the extent shares of our common stock are issued for the additional conversion amount due over the principal amount. From
January 1, 2021 through February 12, 2021, we had not purchased any shares under the convertible note hedge and the warrants had not been exercised and remain outstanding.
If we receive additional requests for conversion from the holders of the Notes due 2024 to exercise their right to convert the debt to equity, we have asserted our intent and ability to
settle the remaining $26.6 million aggregate principal amount of the Notes due 2024 in cash.

The Conversion Condition for the Notes due 2025 was met during the quarter ended December 31, 2020. Therefore, our Notes due 2025 became convertible at the holders’
option beginning on January 1, 2021 and continue to be convertible through March 31, 2021. Accordingly, we have classified the net carrying amount of the Notes due 2025 of
$255.0 million as debt, current on the consolidated balance sheet as of December 31, 2020.

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During the fourth quarter of 2020, holders converted $43.9 million in aggregate principal amount of the Notes due 2024, the principal amount of which was repaid in cash. Of
the $43.9 million in aggregate principal amount, $38.5 million in aggregate principal amount was settled pursuant to an exchange agreement entered into in December 2020 with
certain holders of Notes due 2024. In connection with the exchange agreement, we entered into partial unwind agreements to unwind a number of warrants exercisable under the
hedging arrangements previously entered into in connection with the issuances of the Notes due 2024, and we issued approximately 2.1 million warrants on a net basis, resulting in
a net issuance of approximately 1.9 million shares of our common stock to the holders with an aggregate fair value of $301.0 million, representing the conversion value in excess of
the  principal  amount  of  the  Notes  due  2024,  which  were  fully  offset  by  shares  received  from  our  exercise  of  the  associated  note  hedging  arrangements  discussed  below.  As  of
December 31, 2020, warrants exercisable to purchase a total of approximately 4.3 million shares remain outstanding. The total amount of $43.9 million paid to partially settle the
Notes due 2024 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 $37.2 million. The residual of the conversion price of $6.7 million
was allocated to the equity component of the Notes due 2024 as a reduction of additional paid-in capital. The fair value of the notes settlement was calculated using a discount rate
of 5.75%, representing an estimate of our borrowing rate at the date of repurchase with a remaining expected life of approximately 3.6 years. As part of the settlement, we wrote-off
the $8.9 million unamortized debt discount and $0.8 million debt issuance cost apportioned to the principal amount of Notes due 2024 settled. We also recorded a loss on partial
settlement of the Notes due 2024 of $3.0 million in other expense, net, 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. As of December 31, 2020, $88.1 million aggregate principal amount of the Notes due 2024
remains outstanding.

We may receive additional conversion requests that require settlement in the first quarter of 2021. If more holders elect to convert their Notes due 2024 and 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 and 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, 2020,

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$320.0 million aggregate principal amount of the Notes due 2025 were outstanding; (the foregoing, collectively, the “Convertible Notes”);

$88.1 million aggregate principal amount of the Notes due 2024 were outstanding; and

$5.0 million aggregate principal amount of the Notes due 2023 were outstanding; (the foregoing, collectively, 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.

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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.

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 2025 and Notes due 2024, 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 2025 and Notes due 2024, at a
price  approximately  the  same  as  the  initial  conversion  price  of  the  Notes  due  2025  and  Notes  due  2024.  These  transactions  are  expected  to  reduce  the  potential  dilution  with
respect to our common stock upon conversion of the Notes due 2025 and Notes due 2024. 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 2025 and Notes due 2024 (subject to customary anti-dilution adjustments) at an
initial strike price of approximately $81.54 per share and $25.23 per share for Notes due 2025 and Notes due 2024, 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 2025 and Notes due 2024.

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Changes in current accounting methods, standards, or regulations applicable to the Convertible Notes due 2025 and Notes due 2024 could have a material impact on
our reported financial results, future financial results, future cash flows, and/or our stock price.

Under Accounting Standards Codification (“ASC”) 470-20, “Debt with Conversion and Other Options,” an entity must separately account for the host contract and conversion
option associated with convertible debt instruments, such as the Notes due 2025 and Notes due 2024, 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  2024,  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 2025 and Notes due 2024, 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 2024 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 a convertible debt instrument to be accounted for as a single
liability measured at its amortized cost. Interest expense 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. 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 2024 and Notes due 2025, which will adversely affect our diluted earnings per share.

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 our Notes due 2024 and Notes due 2025. Upon cash settlement, repayment of the principal amount
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 $36.4 million for Notes due
2024 and $68.7 million for Notes due 2025 of accreted interest as cash used in operating activities in our consolidated statement of cash flows upon cash settlement, if and when
such  cash  settlement  occurs  prior  to  the  adoption  of  ASU  2020-06  discussed  above,  which  could  adversely  affect  our  future  cash  flow  from  operations.  In  our  consolidated
statement of cash flows for the year ended December 31, 2020, $3.1 million of the debt discount associated with the conversion of $43.9 million in aggregate principal amount of the
Notes due 2024 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.

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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;

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;

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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.

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.

Additionally, while we have not repurchased any shares under the plan, our Board of Directors has authorized the repurchase of up to $200.0 million of our common stock
through open market purchases or through structured repurchase agreements with third parties. Such purchases are expected to continue through March 2022 unless otherwise
extended or shortened by our Board of Directors.

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.

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Our affiliated stockholders, executive officers and directors own a significant percentage of our stock, and they may take actions that our other stockholders may not
view as beneficial.

Our affiliated stockholders, executive officers and directors collectively own, and will continue to own after giving effect to this offering, a significant percentage of our common
stock. This significant concentration of share ownership may adversely affect the trading price for our common stock and the notes because investors often perceive disadvantages
in owning stock in companies with controlling stockholders. Also, as a result, these stockholders, acting together, may be able to control our management and affairs and matters
requiring stockholder approval, including the election of directors and approval of significant corporate transactions, such as mergers, consolidations or the sale of substantially all of
our assets. Consequently, this concentration of ownership may have the effect of delaying or preventing a change in control, including a merger, consolidation or other business
combination involving us, or discouraging a potential acquirer from making a tender offer or otherwise attempting to obtain control, even if this change in control would benefit our
other 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.  For  instance,  in  December  in  2018,  we  filed  a  resale  registration  statement
related to the approximately 7.5 million shares of our common stock that were issued to SunPower upon the closing of the APA transaction. Any sales of securities by SunPower or
other stockholders with registration rights could have a material adverse effect on the trading price of our common stock.

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.

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.

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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:

•

•

•

•

•

•

•

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.

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

Enphase Energy, Inc. | 2020 Form 10-K | 47

Table of Contents

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.

Enphase Energy, Inc. | 2020 Form 10-K | 48

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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.

Enphase Energy, Inc. | 2020 Form 10-K | 49

Table of Contents

Item 2.    Properties

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

Facility

Location

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

Item 3.    Legal Proceedings

Fremont, U.S.
Boise, U.S.
Petaluma, U.S.
San Jose, U.S
India
France
New Zealand
Australia

Held
Leased
Leased
Leased
Leased
Leased
Leased
Leased
Leased

Approximate Square Footage
40,446
24,688
141,231
25,720
67,000
2,820
23,573
2,931

Lease end term
Sep-2025
Jan-2027
Aug-2022
Mar-2031
May-2024
Nov-2026
Oct-2025
Dec-2022

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

On or about June 17, 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  on  behalf  of  a  class  consisting  of  those  individuals  who  purchased  or
otherwise acquired our common stock between February 26, 2019 and June 17, 2020 (the “Hurst Action”). The complaint alleges 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 does not quantify any alleged damages in his
complaint but, in addition to attorneys' fees and costs, he seeks 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. The court appointed Plaintiff as the Lead Plaintiff on November 30, 2020. On
December 7, 2020, the court granted the parties’ stipulation setting the schedule for the filing of an amended complaint and Defendants’ anticipated motion to dismiss. On January
22, 2021, Plaintiff filed an amended complaint against Defendants asserting substantially the same allegations as the original complaint purportedly on behalf of individuals who
purchased or otherwise acquired Enphase common stock between February 26, 2019 and June 16, 2020. We dispute all allegations, intend to defend the matter vigorously and
believe the claims are without merit.

Derivative Action Suit

On  or  about  July  10,  2020,  Yan  Shen  filed  a  verified  shareholder  derivative  lawsuit  captioned  Shen  v.  Kothandaraman,  et  al.,  in  the  United  States  District  Court  for  the
Northern District of California against Badrinarayanan Kothandaraman, Eric Branderiz, Mandy Yang, Steven J. Gomo, Benjamin Kortlang, Richard Mora, Thurman J. Rodgers, and
Enphase Energy, Inc. (nominal defendant) 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 (the “Shen Action”). The plaintiff does not quantify any alleged damages in the complaint, but in addition to attorneys’ fees and costs, seeks a
proposal to strengthen the Board’s supervision of operations and shareholder input into the policies and guidelines of the Board; to permit our shareholders to nominate at least
three candidates for election to the Board; and to ensure the establishment of effective oversight of compliance with applicable laws, rules, and regulations; and restitution from the
individual defendants. On September 24, 2020, the court entered an order staying the derivative action until all motions to dismiss the securities class action are decided.

On October 28, 2020, Benjamin Weber filed a verified shareholder derivative lawsuit captioned Weber v. Kothandaraman, et al.,  in  the  United  States  District  Court  for  the
Northern District of California against Badrinarayanan Kothandaraman, Eric Branderiz, Mandy Yang, Steven J. Gomo, Benjamin Kortlang, Richard Mora, Thurman J. Rodgers, and
Enphase Energy, Inc. (nominal defendant) containing substantially the same allegations

Enphase Energy, Inc. | 2020 Form 10-K | 50

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as  those  in  the  Shen  Action  (the  “Weber  Action”).  On  November  20,  2020,  the  court  consolidated  the  Shen  and  Weber  Actions,  ordered  them  related  to  the  Hurst  Action,  and
ordered the terms of the stay previously entered in the Shen Action to apply to the newly consolidated action under Lead Case No. 3:20-cv-04623-BLF (the “Consolidated Derivative
Action”) and all subsequently filed derivative lawsuits arising out of substantially the same allegations as the Consolidated Derivative Action.

On November 18, 2020, Anthony R. Buch filed a verified shareholder derivative lawsuit captioned Buch v. Kothandaraman, et al., in the United States District Court for the
Northern District of California against Badrinarayanan Kothandaraman, Eric Branderiz, Mandy Yang, Steven J. Gomo, Benjamin Kortlang, Richard Mora, Thurman J. Rodgers, and
Enphase Energy, Inc. (nominal defendant) containing substantially the same allegations as those in the Consolidated Derivative Action (the “Buch Action”). On December 2, 2020,
the court granted the parties stipulation to consolidate the Buch Action with the Consolidated Derivative Action.

On December 9, 2020, Frank Caggiano filed a verified shareholder derivative lawsuit captioned Caggiano v. Kothandaraman, et al., in the United States District Court for the
Northern District of California against Badrinarayanan Kothandaraman, Eric Branderiz, Mandy Yang, Steven J. Gomo, Benjamin Kortlang, Richard Mora, Thurman J. Rodgers, and
Enphase Energy, Inc. (nominal defendant) containing substantially the same allegations as those in the Consolidated Derivative Action (the “Caggiano Action”). On December 24,
2020, the court granted the parties stipulation to consolidate the Caggiano Action with the Consolidated Derivative Action.

We dispute the allegations in each of the above-reference derivative lawsuits, and we intend to defend the matter vigorously and believe the claims are without merit.

Books and Records Suit

On  September  15,  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”).
The complaint alleges that our company has wrongfully refused to produce documents in response to Mr. Olochwoszcz’s demand and seeks a court order compelling us to permit
inspection and copying of certain of our books and records, as well as costs and expenses, including attorneys’ fees, related to the lawsuit. We have also received similar demands
for inspection of our books and records from four other company stockholders.

On February 4, 2021, Mr. Olochwoszcz and three other demanding stockholders—Teamsters Local 677 Health Services & Insurance Plan, Saratoga Advantage Trust Small
Capitalization  Portfolio  and  Leo  Schumacher—filed  in  the  Section  220  Litigation  a  stipulation  to  intervene  on  a  limited  basis.  The  parties  agreed  to  the  limited  intervention,  a
confidentiality  agreement,  and  a  stay  of  the  Section  220  Litigation  in  connection  with  a  document  production  agreement  between  the  Company  and  four  of  the  five  demanding
stockholders. Pursuant to the stay agreement, the Section 220 Litigation will be stayed to allow the parties to explore the resolution of the demands.

The pending lawsuits and any other related lawsuits are subject to inherent uncertainties, and the actual defense and disposition costs will depend upon many unknown
factors.  The  outcome  of  the  pending  lawsuits  and  any  other  related  lawsuits  is  necessarily  uncertain.  We  could  be  forced  to  expend  significant  resources  in  the  defense  of  the
pending lawsuits and any additional lawsuits, and we may not prevail. In addition, we may incur substantial legal fees and costs in connection with such lawsuits.

Item 4.    Mine Safety Disclosures

Not applicable.

Enphase Energy, Inc. | 2020 Form 10-K | 51

Table of Contents

PART II

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

Common Stock

Our common stock, $0.00001 par value per share, has been traded on The Nasdaq Global Market under the symbol “ENPH” since March 30, 2012.

Holders

As  of  February  8,  2021,  there  were  approximately  19  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, 2020, there

were no unregistered sales of equity securities by us during the year ended December 31, 2020.

In April 2020, our board of directors authorized the repurchase of up to $200.0 million of our common stock, exclusive of brokerage commissions. Purchases will be completed
from  time  to  time  in  the  open  market  or  through  structured  repurchase  agreements  with  third  parties.  Such  purchases  are  expected  to  continue  through  March  2022  unless
otherwise  extended  or  shortened  by  our  board  of  directors.  The  timing  and  amount  of  repurchases  will  depend  on  a  variety  of  factors,  including  the  price  of  our  common  stock
compared  to  the  intrinsic  value,  alternative  investment  opportunities,  corporate  and  regulatory  requirements  and  market  conditions.  As  of  December  31,  2020,  we  have  not
repurchased any shares under this repurchase program.

The  following  table  provides  information  about  our  purchases  of  our  common  stock  during  the  three  months  ended  December  31,  2020  (in  thousands,  except  per  share

amounts):

October 2020
November 2020
December 2020
Total

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

—  $
—  $
—  $
— 

— 
— 
— 

—  $
—  $
—  $
— 

200,000 
200,000 
200,000 

Enphase Energy, Inc. | 2020 Form 10-K | 52

Table of Contents

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,  2016  to  December  31,  2020.  An  investment  of  $100  is  assumed  to  have  been  made  in  our  common  stock  and  in  each  index  on  December  31,  2016,  all
dividends were reinvested, and the relative performance of the investments are tracked through December 31, 2020. 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.    Selected Consolidated Financial Data

December 31,
2016

December 31,
2017

December 31,
2018

December 31,
2019

December 31,
2020

$
$
$

100 
100 
100 

$
$
$

239 
119 
152 

$
$
$

468 
112 
112 

$
$
$

2,587 
144 
187 

$
$
$

17,373 
168 
623 

The information set forth below for the five years ended December 31, 2020 is not necessarily indicative of results of future operations, and should be read in conjunction with
Part  II,  Item  7.  “Management’s  Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations,”  and  the  consolidated  financial  statements  and  related  notes  thereto
included in Part II, Item 8. “Financial Statements and Supplementary Data,” of this Annual Report on Form 10-K to fully understand the factors that may affect the comparability of
the information presented below.’

We  adopted  Accounting  Standards  Codification  (“ASC”)  No.  606,  “Revenue  Recognition”  (“ASC  606”  or  “Topic  606”)  and  applied  the  modified  retrospective  method  to  all
contracts that were not completed as of January 1, 2018. Financial data for the fiscal years ended December 31, 2017 and 2016 have not been adjusted to reflect the adoption of
ASC 606.

Enphase Energy, Inc. | 2020 Form 10-K | 53

Table of Contents

Consolidated Statement of Operations Data:
Net revenues
Cost of revenues
Gross profit
Operating expenses:

Research and development
Sales and marketing
General and administrative
Restructuring charges

Total operating expenses

Income (loss) from operations
Other expense, net
Interest income
Interest expense
Other income (expense), net
Change in fair value of derivatives

Total other expense, net
Income (loss) before income taxes
Income tax benefit (provision)

Net income (loss)
Net income (loss) per share:

Basic

Diluted

Shares used in per share calculation:

Basic

Diluted

$

$

$

$

2020

2019

Years Ended December 31,
2018
(in thousands, except per share data)

2017

2016

774,425  $
428,444 
345,981 

624,333  $
403,088 
221,245 

316,159  $
221,714 
94,445 

286,166  $
230,123 
56,043 

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

2,156 
(21,001)
(3,836)
(44,348)
(67,029)
119,410 
14,585 

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

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

133,995  $

161,148  $

1.07  $

0.95  $

125,561 

141,918 

1.38  $

1.23  $

116,713 

131,644 

32,587 
27,047 
29,086 
4,129 
92,849 
1,596 

1,058 
(10,693)
(2,190)
— 
(11,825)
(10,229)
(1,398)
(11,627) $

(0.12) $

(0.12) $

99,619 

99,619 

33,157 
23,126 
22,221 
16,917 
95,421 
(39,378)

276 
(8,212)
1,973 
— 
(5,963)
(45,341)
149 
(45,192) $

(0.54) $

(0.54) $

82,939 

82,939 

322,591 
264,583 
58,008 

50,703 
38,810 
27,418 
3,777 
120,708 
(62,700)

75 
(2,848)
(514)
— 
(3,287)
(65,987)
(1,475)
(67,462)

(1.34)

(1.34)

50,519 

50,519 

Consolidated Balance Sheet Data:

Cash, cash equivalents and restricted cash
Total assets
Warranty obligations
Debt
Total stockholders’ equity

Additional Data:
Working capital
Gross margin percentage

$

$

2020

2019

As of December 31, 
2018
(in thousands)

2017

2016

$

679,379 
1,200,102 
45,913 
330,865 
483,993 

$

296,109 
713,223 
37,098 
105,543 
272,212 

$

106,237 
339,937 
31,294 
109,783 
7,776 

$

29,144 
169,147 
29,816 
49,751 
(9,126)

17,764 
163,576 
31,414 
33,900 
1,300 

399,021 

$

44.7 %

300,346 

$

35.4 %

75,141 

$

29.9 %

38,705 

$

19.6 %

35,092 

18.0 %

Enphase Energy, Inc. | 2020 Form 10-K | 54

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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 the transaction with SunPower Corporation. 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 2020 Highlights

We are a global energy technology company. We deliver smart, easy-to-use solutions that manage solar generation, storage and communication on one single 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  32  million
microinverters, and approximately 1.4 million Enphase residential and commercial systems have been deployed in more than 130 countries.

We  sell  our  solutions  primarily  to  distributors  who  resell  them  to  solar  installers.  We  also  sell  directly  to  large  installers,  OEMs,  strategic  partners  and  homeowners.  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 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. 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.

On March 9, 2020, we issued $320.0 million aggregate principal amount of our Convertible Senior Notes due 2025 (the “Notes due 2025”) in a private placement. The Notes
due  2025  are  general  unsecured  obligations  and  bear  interest  at  a  rate  of  0.25%  per  year,  payable  semi-annually  on  March  1  and  September  1  of  each  year,  beginning  on
September 1, 2020. The Notes due 2025 will mature on March 1, 2025, unless earlier repurchased by us or converted at the option of the holders. Further information relating to
the Notes due 2025 may be found in Note 11, “Debt,” of the notes to consolidated financial statements included in Part II, Item 8 of this Annual Report on Form 10-K and below
under the section titled “- Liquidity and Capital Resources.”

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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, we 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,  we  assessed  that  the  probable  loss  recovery  for  the  year  ended
December 31, 2020 is equal to the approved refund requests available to us prior to issuance of the financial statements on February 12, 2021.

As of December 31, 2020, we have 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. For the year ended December 31, 2020, we recorded $38.9 million as a reduction to cost of revenues in our consolidated statements of
operations as the approved refunds relate to paid tariffs previously recorded to cost of revenues; therefore, we recorded the corresponding approved tariff refunds as credits to cost
of  revenues  in  the  current  period.  For  the  year  ended  December  31,  2020,  we  recorded  the  $0.6  million  accrued  interest  as  interest  income  in  our  consolidated  statement  of
operations. The tariff refund receivable of $14.7 million is recorded as a reduction of accounts payable to Flex Ltd. and affiliates (“Flex”), our manufacturing partner and the importer
of record who will first receive the tariff refunds, on the consolidated balance sheet as of December 31, 2020.

The  Tariff  Exclusion  expired  on  August  7,  2020  and  those  microinverter  products  now  are  subject  to  tariffs.  We  continue  to  pay  Section  301  Tariffs  on  our  storage  and

communication products and other accessories imported from China which are not subject to the Tariff Exclusion.

In  December  2020,  holders  exchanged  $43.9  million  in  aggregate  principal  amount  of  the  Notes  due  2024,  the  principal  amount  of  which  was  repaid  in  cash.  Of  the
$43.9 million in aggregate principal amount, $38.5 million in aggregate principal amount was settled pursuant to an exchange agreement entered into in December 2020 with certain
holders  of  Notes  due  2024.  We  also  issued  approximately  1.9  million  shares  of  our  common  stock  to  the  holders  in  December  2020  for  the  conversion  value  in  excess  of  the
principal amount of the Notes due 2024, which were fully offset by shares received from our exercise of the associated note hedging arrangements. Refer to Note 11. 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. In connection with the settlement of the Notes
due  2024,  we  entered  into  partial  unwind  agreements  to  unwind  number  of  warrants  exercisable  under  our  note  hedging  arrangements  and  to  issue  approximately  2.1  million
warrants on a net basis, resulting in a net issuance of approximately 1.9 million shares of our common stock in connection with the exchange of the Notes due 2024.

Impact of COVID-19

The  ongoing  COVID-19  pandemic  continues  to  cause  disruptions  and  uncertainties,  including  in  the  core  markets  in  which  we  operate.  The  COVID-19  pandemic  has
significantly curtailed the movement of people, goods and services and had a notable impact on general economic conditions including but not limited to the temporary closures of
many  businesses,  “shelter  in  place”  orders  and  other  governmental  regulations,  and  reduced  consumer  spending.  The  most  significant  near-term  impacts  of  COVID-19  on  our
financial  performance  are  a  decline  in  sales  orders  as  future  residential  and  commercial  system  owners  are  canceling  sales  meetings  with  system  installation  professionals  or
postponing system installations. As the purchase of new solar energy management solutions declines as part of the impact of COVID-19 on consumer spending, many businesses
through which we distribute our products are working at limited operational capacity. The extent of the impact of COVID-19 on our future operational and financial performance will
depend on various future developments, including the duration and spread of the outbreak, impact on our employees, impact on our customers, effect on our sales cycles or costs,
and effect on our supply chain and vendors, all of which are uncertain and cannot be predicted, but which could have a material adverse effect on our business, results of operations
or financial condition. 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.

Enphase Energy, Inc. | 2020 Form 10-K | 56

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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 and Enlighten cloud-based monitoring service as well as other accessories.

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, depreciation and amortization of test equipment
and hosting services costs. Our product costs are impacted by technological innovations, such as advances in semiconductor integration and new product introductions, economies
of scale resulting in lower component costs, and improvements in production processes and automation. Certain costs, primarily personnel and depreciation and amortization of test
equipment, are not directly affected by sales volume.

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

Enphase Energy, Inc. | 2020 Form 10-K | 57

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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  10.  “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 and fees under our convertible notes and term loans, non-cash interest expense related to the accretion of debt
discount  and  amortization  of  deferred  financing  costs,  and  non-cash  charge  recognized  for  the  change  in  fair  value  of  our  convertible  notes  embedded  derivative  and  warrants.
Other expense, net also includes interest income on our cash balance, accrued interest on tariffs previously paid and approved for refund, and gains or losses upon conversion of
foreign currency transactions into U.S. dollars.

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.

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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 expense, net
Interest income
Interest expense
Other expense, net
Change in fair value of derivatives
Total other expense, net

Income (loss) before income taxes
Income tax benefit (provision)

Net income (loss)

2020

$

Years Ended December 31,
2019

2018

774,425  $
428,444 
345,981 

624,333  $
403,088 
221,245 

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

2,156 
(21,001)
(3,836)
(44,348)
(67,029)
119,410 
14,585 

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

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

$

133,995  $

161,148  $

316,159 
221,714 
94,445 

32,587 
27,047 
29,086 
4,129 
92,849 
1,596 

1,058 
(10,693)
(2,190)
— 
(11,825)
(10,229)
(1,398)
(11,627)

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Results of Operations

In this section, we discuss the results of our operations for the year ended December 31, 2020 compared to the year ended December 31, 2019. For a discussion of the year
ended December 31, 2019 compared to the year ended December 31, 2018, please refer to Part II, Item 7, "Management's Discussion and Analysis of Financial Condition and
Results of Operations" in our Annual Report on Form 10-K for the year ended December 31, 2019.

Net Revenues 

Net revenues

Years Ended December 31,

Change in

2020

2019

$

%

$

774,425  $

(In thousands, except percentages)
624,333  $

150,092 

24 %

Net  revenues  increased  by  24%  or  $150.1  million  for  the  year  ended  December  31,  2020,  as  compared  to  the  same  period  in  2019,  primarily  due  to  the  11%  increase  in
microinverter  unit  volume  shipped  primarily  as  a  result  of  business  growth  in  the  U.S.,  higher  microinverter  units  shipped  in  the  first  quarter  of  2020  as  our  customers  took
advantage  of  safe  harbor  guidance  from  the  IRS  and  shipments  of  our  Enphase  Encharge  storage  systems  to  customers  in  North  America.  We  sold  approximately  6.8  million
microinverter units in the year ended December 31, 2020, as compared to approximately 6.2 million microinverter units in the same period in 2019.

Cost of Revenues and Gross Profit

Cost of revenues
Gross profit
Gross margin

Years Ended December 31,

Change in

2020

2019

$

%

(In thousands, except percentages)

$

428,444 
345,981 

$

44.7 %

403,088 
221,245 

$

35.4 %

25,356 
124,736 

6 %
56 %

Cost  of  revenues  increased  by  6%  or  $25.4  million  for  the  year  ended  December  31,  2020,  as  compared  to  the  same  period  in  2019,  primarily  due  to  higher  volume  of
microinverter units sold and shipments of our Enphase Encharge storage systems primarily as a result of business growth in the U.S., as well as higher units shipped in the first
quarter of 2020 as our customers took advantage of safe harbor guidance from the IRS, partially offset by the $38.9 million in refunds approved for tariffs mentioned above and a
decrease in the unit cost of our products as a result of our cost reduction efforts.

Gross  margin  increased  by  9.3  percentage  points  for  the  year  ended  December  31,  2020,  as  compared  to  the  same  period  in  2019.  The  increase  in  gross  margin  was
primarily attributable to the $38.9 million in refunds approved for tariffs mentioned above as well as our overall pricing and cost management efforts, including the transition of our
contract manufacturing to Mexico to mitigate tariffs.

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Research and Development

Years Ended December 31,

Change in

2020

2019

$

%

(In thousands, except percentages)

Research and development
Percentage of net revenues

$

55,921 

$

7 %

40,381 

$

15,540 

38 %

6 %

Research and development expense increased by 38% or $15.5 million for the year ended December 31, 2020, as compared to the same period in 2019. The increase was
primarily  due  to  $13.6  million  higher  personnel-related  expenses  and  $2.5  million  of  outside  consulting,  engineering  services  and  equipment  associated  with  the  innovation  and
development, introduction and qualification of new products, partially offset by a $0.6 million reduction in travel expenditure as we implemented travel restrictions prohibiting all non-
essential business travel. The increase in personnel-related expenses was primarily due to hiring employees in New Zealand, India and US, increasing total compensation costs.
The amount of research and development expenses may fluctuate from period to period due to differing levels and stages of development activity.

Sales and Marketing

Years Ended December 31,

Change in

2020

2019

$

%

(In thousands, except percentages)

Sales and marketing
Percentage of net revenues

$

52,927 

$

7 %

36,728 

$

16,199 

44 %

6 %

Sales and marketing expense increased by 44% or $16.2 million for the year ended December 31, 2020 as compared to the same period in 2019. The increase was primarily
due to $11.4 million of higher personnel-related expenses as a result of our efforts to improve customer experience by hiring additional employees to reduce the average call wait
time for customers, as well as support our business growth in the U.S. and international expansion in Europe, and $5.5 million for a combination of higher marketing expenses,
professional  services,  advertising  costs  and  facilities  costs  to  enable  business  growth,  partially  offset  by  $0.7  million  reduction  in  travel  expenditure  as  we  implemented  travel
restrictions prohibiting all non-essential business travel and converting where possible our in-person sales, trainings and marketing events to virtual-only due to COVID-19.

General and Administrative

Years Ended December 31,

Change in

2020

2019

$

%

(In thousands, except percentages)

General and administrative
Percentage of net revenues

$

50,694 

$

7 %

38,808 

$

11,886 

31 %

6 %

General  and  administrative  expense  increased  31%  or  $11.9  million  for  the  year  ended  December  31,  2020,  as  compared  to  the  same  period  in  2019.  The  increase  was
primarily due to $7.9 million of higher personnel-related expenses, $2.8 million of other operational, technological and facilities costs to support scalability of our business growth
and $1.6 million of higher legal and professional services, partially offset by $0.4 million reduction in travel expenditures as we implemented travel restrictions prohibiting all non-
essential business travel in response to COVID-19.

Restructuring Charges

Years Ended December 31,

Change in

2020

2019

$

%

(In thousands, except percentages)

estructuring charges

$

$

— 

$
2,599 

(2,599)

(100)%

We completed our 2018 restructuring plan in 2019, hence we incurred no restructuring expenses during the year ended December 31, 2020. Restructuring charges for 2019
primarily include $1.6 million in cash-based severance and related benefits and $1.1 million in non-cash charges for impaired assets, partially offset by a $0.1 million reduction in
lease loss reserves due to adoption of ASC 842 Leases.    

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Other Expense, Net

Interest income
Interest expense
Other expense, net
Change in fair value of derivatives

Total other expense, net

**    Not meaningful

Years Ended December 31,

2020

2019

$

(In thousands, except percentages)

Change in

%

$

$
$

2,156  $

(21,001)
(3,836)

(44,348) $
(67,029) $

2,513  $
(9,691)
(5,437)

—  $
(12,615) $

(357)
(11,310)
1,601 
(44,348)
(54,414)

(14)%
117 %
(29)%
**

(431)%

Interest income of $2.2 million for the year ended December 31, 2020 decreased, as compared to $2.5 million in the same period in 2019, primarily due to significant decline
in interest rates earned on cash balances, partially offset by a higher average cash balance earning interest in the year ended December 31, 2020 compared to the same period in
2019 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.

Interest expense of $21.0 million for the year ended December 31, 2020 primarily includes $20.2 million related to the accretion of the debt discount and debt issuance cost
as well as coupon interest incurred associated with our Notes due 2024 and Notes due 2025, $0.5 million of interest expense related to long-term financing receivable recorded as
debt  and  interest  expense  of  $0.2  million  related  to  coupon  interest  incurred  and  amortization  of  debt  issuance  costs  associated  with  our  Notes  due  2023.  Interest  expense  of
$9.7 million for the year ended December 31, 2019 primarily includes $4.6 million related to the coupon interest incurred, debt discount and amortization of debt issuance costs with
our Notes due 2024, interest expense of $2.7 million related to the repayment of our term loan, interest expense of $1.5 million related to coupon interest incurred and amortization
of debt issuance costs associated with Notes due 2023, and $0.9 million of interest expense related to long-term financing receivable recorded as debt.

Other expense, net of $3.8 million for the year ended December 31, 2020 primarily related to $3.0 million non-cash loss on settlement of $43.9 million aggregate principal
amount of the Notes due 2024 and $0.5 million net loss related to foreign currency exchange and remeasurement. Other expense, net of $5.4 million for the year ended December
31, 2019, primarily relates to the $6.0 million fees paid for the repurchase and exchange of our Notes due 2023, partially offset by $0.6 million net gain related to foreign currency
exchange and remeasurement.

Change  in  fair  value  of  derivatives  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. See Note 11, “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.

Income Tax Benefit (Provision)

Income tax benefit

Years Ended December 31,

2020

$

14,585  $

2019

$
(In thousands, except percentages)
71,034  $

Change in

%

(56,449)

(79)%

The income tax benefit of $14.6 million for the year ended December 31, 2020, decreased compared to the income tax benefit of $71.0 million in 2019, primarily due to the
valuation  allowance  release  for  the  year  ended  December  31,  2019,  partially  offset  by  excess  tax  benefits  related  to  stock-based  compensation  tax  deduction  for  year  ended
December 31, 2020. See Note 15. “Income Taxes,” 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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Liquidity and Capital Resources

Sources of Liquidity

As of December 31, 2020, we had $399.0 million in working capital, including cash and cash equivalents of $679.4 million, of which approximately $659.2 million were held in
the  U.S.  Our  cash  and  cash  equivalents  primarily  consist  of  U.S.  government  money  market  mutual  funds  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.  However,  our  liquidity  may  be  negatively  impacted  if  sales  decline  significantly  for  an  extended  period  due  to  the  impact  of  the  ongoing  COVID-19
pandemic. While we have experienced delays in collections from certain customers due to COVID-19, we believe we will be able to meet our anticipated cash needs for at least the
next 12 months. 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.

Convertible Notes

Notes due 2023. As of December 31, 2020, we had $5.0 million aggregate principal amount of our Notes due 2023 outstanding. The Notes due 2023 are general unsecured
obligations and bear interest at a rate of 4.00% per year, payable semi-annually on February 1 and August 1 of each year. The Notes due 2023 will mature on August 1, 2023,
unless earlier repurchased by us or converted at the option of the holders.

Notes due 2024. As of December 31, 2020, we had $88.1 million aggregate principal amount of our Notes due 2024 outstanding. The Notes due 2024 are general unsecured
obligations and bear interest at a rate of 1.0% per year, payable semi-annually on June 1 and December 1 of each year. The Notes due 2024 will mature on June 1, 2024, unless
earlier repurchased by us or converted at the option of the holders at a conversion price of $20.50 per share.

The  Notes  due  2024  may  be  converted  on  any  day  prior  to  the  close  of  business  on  the  business  day  immediately  preceding  December  1,  2023,  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 September 30, 2019 (and only during such calendar quarter), if the last reported sale price of the our 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 $26.6513 (130% of the conversion price) on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement
period”) in which the “trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of
the product of the last reported sale price of the our common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events.
Upon conversion of any of the notes, we will pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and common stock, at our election.

From April 1, 2020 through March 31, 2021, the Notes due 2024 may be converted because the last reported sale price of our common stock for at least 20 trading days
during a period of 30 consecutive trading days ending on March 31, 2020, June, 30, 2020, September 30, 2020 and December 31, 2020 was greater than or equal to $26.6513 on
each applicable trading day. Upon conversion of any of the notes, we will pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and common
stock, at our election.

In connection with the offering of the Notes due 2024, we entered into privately-negotiated convertible note hedge transactions in order to reduce the potential dilution to our
common stock upon any conversion of the Notes due 2024. Also, concurrently with the offering of the Notes due 2024, we entered into privately-negotiated warrant transactions
whereby we issued warrants to effectively increase the overall conversion price of Notes due 2024 from $20.5010 to $25.2320.

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From January 1, 2021 through February 12, 2021, we’ve received the request for conversion of approximately $61.5 million in principal amount of our Notes due 2024, of
which we have elected to settle the aggregate principal amount of the Notes due 2024 in a combination of cash and any excess in shares of our common stock in accordance with
the applicable indenture. Such conversion will be settled in March 2021. We may purchase shares under the convertible note hedge to the extent shares of our common stock are
issued  for  the  additional  conversion  amount  due  over  the  principal  amount.  From  January  1,  2021  through  February  12,  2021,  we  had  not  purchased  any  shares  under  the
convertible note hedge and the warrants had not been exercised and remain outstanding. If we receive additional request for conversion from the holders of the Notes due 2024 to
exercise their right to convert the debt to equity, we have asserted our intent and ability to settle the remaining $26.6 million aggregate principal amount of the Notes due 2024 in
cash.

Notes  due  2025.  As  of  December  31,  2020,  we  had  $320.0  million  aggregate  principal  amount  of  our  Notes  due  2025  outstanding.  The  Notes  due  2025  are  general
unsecured obligations and bear interest at a rate of 0.25% per year, payable semi-annually on March 1 and September 1 of each year, beginning on September 1, 2020. The Notes
due 2025 will mature on March 1, 2025, unless earlier repurchased by us or converted at the option of the holders at a conversion price of $81.54 per share.

The  Notes  due  2025  may  be  converted  on  any  day  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 any of 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 our 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 $106.00 (130% of the
conversion  price)  on  each  applicable  trading  day;  (2)  during  the  five  business  day  period  after  any  five  consecutive  trading  day  period  (the  “measurement  period”)  in  which  the
“trading price” (as defined in the relevant indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the
last  reported  sale  price  of  the  our  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.

From January 1, 2021 through March 31, 2021, the Notes due 2025 may be converted because the last reported sale price of our common stock for at least 20 trading days
during a period of 30 consecutive trading days ending on December 31, 2020 was greater than or equal to $106.00 on each applicable trading day. Upon conversion of any of the
notes, we will pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and common stock, at our election.

In connection with the offering of the Notes due 2025, we entered into privately-negotiated convertible note hedge transactions in order to reduce the potential dilution to our
common stock upon any conversion of the Notes due 2025. The total cost of the convertible note hedge transactions was approximately $89.1 million. Also, concurrently with the
offering of the Notes due 2025, we entered into privately-negotiated warrant transactions whereby we issued warrants to acquire shares of our common stock at a strike price of
$106.94 rather than the Notes due 2025 conversion price of $81.54. We received approximately $71.6 million from the sale of the warrants.

As of February 12, 2021, the Notes due 2025 were not converted into equity, therefore, we had not purchased any shares under the convertible note hedge and the warrants
had not been exercised and remain outstanding. If holders of the Notes due 2025 are able to convert the debt to equity, and exercise that right, we have asserted our intent and
ability to settle the $320.0 million aggregate principal amount of the Notes due 2025 in cash.

Cash from operations could be affected by various risks and uncertainties, including, but not limited to, the effects of COVID-19 and other risks detailed in the ‘risk factor’
section in Part I, Item 1A “Risk Factors” of this Annual Report on Form 10-K. We believe that our cash flow from operations with existing cash and cash equivalents 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

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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.

Stock Repurchase Program

In April 2020, our board of directors authorized the repurchase of up to $200.0 million of our common stock, exclusive of brokerage commissions. Purchases will be completed
from  time  to  time  in  the  open  market  or  through  structured  repurchase  agreements  with  third  parties.  Such  purchases  are  expected  to  continue  through  March  2022  unless
otherwise  extended  or  shortened  by  our  board  of  directors.  The  timing  and  amount  of  repurchases  will  depend  on  a  variety  of  factors,  including  the  price  of  our  common  stock
compared  to  the  intrinsic  value,  alternative  investment  opportunities,  corporate  and  regulatory  requirements  and  market  conditions.  As  of  December  31,  2020,  we  have  not
repurchased any shares under this repurchase program.

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 in cash and cash equivalents

Cash Flows from Operating Activities

Years Ended December 31,

2020

2019

(In thousands)

$

$

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 derivatives, deferred income tax benefit, loss on conversion of Notes due 2024, depreciation and amortization, and changes in our operating assets and liabilities. Net cash
provided by operating activities increased by $77.3 million for the year ended December 31, 2020 compared to the year ended December 31, 2019, primarily due to an increase in
our gross profit as a result of increased revenue, $24.8 million cash received of the total tariff refund request of $39.5 million, partially offset by higher operating expenses as we
continue to invest in the long-term growth of our business and also by $3.1 million cash repayment deemed as an amount paid for settlement of $43.9 million aggregate principal
amount of the Notes due 2024 accreted debt discount. For more detail on tariff refund request, refer Note 12. “Contingencies” in “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.

Cash Flows from Investing Activities

For the year ended December 31, 2020 net cash used in investing activities was primarily from $20.6 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 and $5.0 million payment related to
the acquisition of equity investment in a private company.

For the year ended December 31, 2019, net cash used in investing activities was primarily 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.

Cash Flows from Financing Activities

For the year ended December 31, 2020, net cash provided by financing activities of $191.7 million was primarily from $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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For the year ended December 31, 2019, net cash provided by financing activities of $65.9 million was primarily from $127.4 million net proceeds from the issuance of our
Notes due 2024, $29.8 million from sale of warrants, $5.0 million net proceeds from employee stock option exercises and issuance of common stock under our employee stock
incentive program, partially offset by $45.9 million repayment of our term loan and long-term financing receivable recorded as debt, $36.3 million purchase of bond hedges related to
our Notes due 2024, $6.0 million fee paid to repurchase and exchange $60.0 million of Notes due 2023 and $8.2 million payment of employee withholding taxes related to net share
settlement of equity awards.

Contractual Obligations

The following table summarizes our outstanding contractual obligations as of December 31, 2020:

Operating leases
Notes due 2023 principal and interest
Notes due 2024 principal and interest 
Notes due 2025 principal and interest
Purchase obligations 

(2)

(1)

Total

Total

2021

Payments Due by Period
2022-2023
(in thousands)

2024-2025

Beyond 2025

$

$

23,875  $

5,600 
89,180 
323,602 
162,184 
604,441  $

5,830  $
200 
61,822 
800 
162,184 
230,836  $

8,733  $
5,400 
592 
1,600 
— 
16,325  $

5,344  $
— 
26,766 
321,202 
— 

353,312  $

3,968 
— 
— 
— 
— 
3,968 

(1) Reflects  the  request  for  conversion  of  approximately  $61.5  million  in  principal  amount  of  our  Notes  due  2024  received  through  issuance  of  the  financial  statements  on
February 12, 2021, of which we have elected to settle the aggregate principal amount of the Notes due 2024 in a combination of cash and any excess in shares of our common
stock in accordance with the applicable indenture. Such conversion will be settled in March 2021.

(2) 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.

Off-Balance Sheet Arrangements

As of December 31, 2020, we did not have any off-balance sheet arrangements, as defined in Item 303(a)(4)(ii) of SEC Regulation S-K.

Critical Accounting Policies

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, and related disclosure of contingent assets and liabilities.

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.

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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, and storage solutions to distributors, large installers, OEMs and strategic partners.

On  January  1,  2018,  we  adopted  Accounting  Standards  Codification  (“ASC”)  No.  606,  “Revenue  Recognition”  (“ASC  606”  or  “Topic  606”)  and  applied  the  modified
retrospective method to all contracts that were not completed as of January 1, 2018. The most significant impacts upon adoption of Topic 606 were how we account for revenue
related to our Envoy communications device and related Enlighten service and the timing of when certain sales incentives are recognized. The full consideration for these products
represents a single performance obligation and is deferred and recognized over the estimated service period.

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 as follows.

•

•

Products Delivered at a Point in Time. We sell our products 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
and storage solutions to distributors, large installers, OEMs and strategic partners. Microinverter units, microinverter accessories, and storage solutions are delivered to
customers at a point in time, and we recognize revenue for these products when we transfer control of the product to the customer, which is generally upon shipment.

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.

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 previously sold Envoy communications device to certain customers under a long-term financing
arrangement. Under this financing arrangement, we net the unbilled receivables against deferred revenue.

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.

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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 million aggregate principal amount of 0.25% convertible 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 the 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. Note 8. “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.

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  (“MTFB”)
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.

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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.

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  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 9. “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  12.
“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.

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

Income Taxes

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

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

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  million  aggregate  principal  amount  of  our  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

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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, 2020. 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 11, “Debt,” of the notes to condensed 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 condensed
consolidated balance 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  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 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, 2020 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 2020 and 2019.
Any foreign currency forward contracts entered in the future are accounted for as derivatives whereby the fair value of the contracts is reported as other current assets or current
liabilities, and gains and losses resulting from changes in the fair value are reported in other income (expense), net, in the accompanying consolidated statements of operations.

Credit Risk

Financial instruments that subject us to concentrations of credit risk consist primarily of cash and cash equivalents, accounts receivable, and derivative financial instruments.
We  maintain  a  substantial  portion  of  our  cash  balances  in  non-interest-bearing  and  interest-bearing  deposits  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  restricted  cash  of  $679.4  million  and  $296.1  million  as  of  December  31,  2020  and  2019,  respectively,  consisting  of  both  non-interest
bearing and interest-bearing deposits, 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 our Notes due 2025, Notes due 2024 and Notes due 2023 have fixed interest rates

of 0.25%, 1.0% and 4.0%, respectively. The fair value

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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,  2020,  we  recognized  a  $3.0  million  non-cash  loss  on  settlement  of  approximately  $43.9  million
aggregate principal amount of the Notes due 2024 as a result of the change in fair value. Based upon the quoted market price as of December 31, 2020, the fair value of our Notes
due 2025 and Notes due 2024 was approximately $725.5 million and $747.1 million, respectively. Notes due 2023 are not actively traded.

A hypothetical 10% change in interest rates during any of the periods presented would not have had a material impact on our financial statements.

Equity Price Risk Involving Minority Interest Investment in A Non-Public Company

As  of  December  31,  2020,  an  investment  of  $5.0  million  in  a  privately-held  company  is  accounted  for  using  the  measurement  alternative  method.  This  strategic  equity
investment in a third party is subject to risk of changes in market value and could result in realized impairment losses. We generally do not attempt to reduce or eliminate our market
exposure in equity investments. We monitor these investments for impairment and record reductions in the carrying values when necessary. Circumstances that indicate an other-
than-temporary decline include the valuation ascribed to the issuing company in subsequent financing rounds, decreases in quoted market prices and declines in operations of the
issuer. There can be no assurance that our equity investment will not face risks of loss in the future.

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Item 8.    Financial Statements and Supplementary Data

ENPHASE ENERGY, INC.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

AS OF DECEMBER 31, 2020 AND 2019,

AND FOR THE YEARS ENDED DECEMBER 31, 2020, 2019 AND 2018

Report of Independent Registered Public Accounting Firm
Consolidated Balance Sheets
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income (Loss)
Consolidated Statements of Stockholders’ Equity (Deficit)
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements
Selected Unaudited Quarterly Financial Information

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79
80
81
83
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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, 2020 and 2019, the related
consolidated statements of operations, comprehensive income (loss), stockholders' equity, and cash flows, for each of the three years in the period ended December 31, 2020, 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, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity
with 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, 2020, 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 12, 2021, 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, 8 and 9 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, 2020, 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, in order to

evaluate the various assumptions and historical data consisting of failure of individual components contained in its microinverters.

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

– Comparing management’s  prior-year  assumptions  of  expected  failures  to  actual  warranty  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 Convertible note embedded derivative, Convertible notes hedge and Warrants – Refer to Note 9 and 11.

Critical Audit Matter Description

On  March  9,  2020,  the  Company  issued  $320  million  aggregate  principal  amount  of  0.25%  convertible  senior  notes  due  2025  (the  “Notes”).  Concurrently,  the  Company
entered into privately-negotiated convertible notes hedge and warrant transactions which in combination were intended to mitigate potential dilutive effects from the conversion of
the  Notes.  Upon  initial  recognition  of  the  Notes,  the  convertible  notes  embedded  derivative,  convertible  note  hedge  and  warrants  met  the  classification  criteria  for  derivative
accounting,  and  as  a  result,  derivative  financial  instruments  are  mark-to-market  at  each  reporting  period  or  until  they  no  longer  meet  the  classification  criteria  for  derivative
accounting. Complex models incorporating observable and unobservable inputs were utilized to value the derivatives. The fair value of the convertible note embedded derivative is
estimated using a Binomial Lattice model and the fair value of convertible notes hedge and warrants are estimated using Black-Scholes-Merton model.

Unlike the fair value of other financial instruments that are readily observable and therefore more easily independently corroborated, the valuation of the three derivatives is
inherently subjective and involves the use of complex modeling tools. Auditing the fair values requires a high degree of auditor judgment and an increased extent of effort. This
includes involving our fair value specialists who possess significant quantitative and modeling expertise needed to evaluate the appropriateness of these models and inputs.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the valuation of the convertible notes embedded derivative, convertible notes hedge and warrants included the following, among others:

• We tested the effectiveness of controls over management’s valuation of the convertible note embedded derivative, convertible notes hedge and warrants.

• We evaluated management’s methodology and whether management’s assumptions were reasonable.

• We  evaluated  the  competency  and  objectivity  of  management’s  expert  engaged  by  the  Company  to  perform  the  valuation  of  the  convertible  note  embedded  derivative,

convertible notes hedge and warrants.

• With the assistance of our fair value specialists, we developed independent fair value estimates and compared our estimates to the Company’s estimates.

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• We tested the underlying inputs used in valuation of the convertible note embedded derivative, convertible notes hedge and warrants for accuracy and completeness.

• We evaluated the additional accounting and reporting disclosures included in the Company’s Consolidated Financial Statements.

/s/ DELOITTE & TOUCHE LLP

San Francisco, California

February 12, 2021

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

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

Opinion on Internal Control over Financial Reporting

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We  have  audited  the  internal  control  over  financial  reporting  of  Enphase  Energy,  Inc.  and  subsidiaries  (the  “Company”)  as  of  December  31,  2020,  based  on  criteria
established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the
Company  maintained,  in  all  material  respects,  effective  internal  control  over  financial  reporting  as  of  December  31,  2020,  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, 2020, of the Company and our report dated February 12, 2021 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 12, 2021

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ENPHASE ENERGY, INC.

CONSOLIDATED BALANCE SHEETS
(In thousands, except par value)

As of

December 31,
2020

December 31,
2019

Current assets:

ASSETS

Cash and cash equivalents
Restricted cash
Accounts receivable, net of allowances of $462 and $564 at December 31, 2020 and December 31, 2019, 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 $8,267 and $6,794 measured at fair value at December 31, 2020 and December 31, 2019,
respectively)
Debt, current

Total current liabilities

Long-term liabilities:

Deferred revenues, noncurrent
Warranty obligations, noncurrent (includes $20,469 and $13,012 measured at fair value at December 31, 2020 and December 31, 2019,
respectively)
Other liabilities
Debt, noncurrent

Total liabilities

Commitments and contingencies (Note 12)
Stockholders’ equity:

Common stock, $0.00001 par value, 200,000 shares and 150,000 shares authorized; and 128,962 shares and 123,109 shares issued and
outstanding at December 31, 2020 and December 31, 2019, respectively
Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive income (loss)

Total stockholders’ equity

Total liabilities and stockholders’ equity

$

$

$

$

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  $

251,409 
44,700 
145,413 
32,056 
26,079 
499,657 
28,936 
10,117 
30,579 
24,783 
44,620 
74,531 
713,223 

57,474 
47,092 
81,783 

10,078 
2,884 
199,311 

100,204 

27,020 
11,817 
102,659 
441,011 

1 
458,315 
(185,181)
(923)
272,212 
713,223 

See Notes to Consolidated Financial Statements.

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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 expense, net
Interest income
Interest expense
Other expense, net
Change in fair value of derivatives
Total other expense, net

Income (loss) before income taxes
Income tax benefit (provision)

Net income (loss)
Net income (loss) 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)

2020

Years Ended December 31,
2019

2018

$

$

$

$

774,425  $
428,444 
345,981 

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

2,156 
(21,001)
(3,836)
(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 

316,159 
221,714 
94,445 

32,587 
27,047 
29,086 
4,129 
92,849 
1,596 

1,058 
(10,693)
(2,190)
— 
(11,825)
(10,229)
(1,398)
(11,627)

(0.12)

(0.12)

99,619 

99,619 

See Notes to Consolidated Financial Statements.

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Net income (loss)
Other comprehensive income (loss):

Foreign currency translation adjustments

Comprehensive income (loss)

ENPHASE ENERGY, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(In thousands)

2020

Years Ended December 31,
2019

133,995  $

161,148  $

2018

1,357 
135,352  $

(1,665)
159,483  $

(11,627)

1,398 
(10,229)

$

$

See Notes to Consolidated Financial Statements.

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ENPHASE ENERGY, INC.
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands)

Common Stock

Shares

Amount

Additional
Paid-In 
Capital

Accumulated
Income (Deficit)

Accumulated
Other
Comprehensive
Income (Loss)

Total
Stockholders’
Equity (Deficit)

Balance at December 31, 2017

85,914  $

1  $

287,256  $

(295,727) $

(656) $

Cumulative-effect adjustment to accumulated deficit
related to the adoption of ASC 606
Issuance of common stock from exercise of equity awards
and employee stock purchase plan
Issuance of common stock, net of offering costs
Issuance of common stock related to acquisition
Exercise of warrants
Stock-based compensation
Net loss
Foreign currency translation adjustment

— 

3,185 
9,524 
7,500 
912 
— 
— 
— 

Balance at December 31, 2018

107,035  $

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
Conversion of convertible notes due 2023, net
Equity component of convertible notes due 2024, net
Cost of convertible notes hedge related to the convertible
notes due 2024
Sale of warrants related to the convertible notes due 2024
Stock-based compensation
Net income
Foreign currency translation adjustment

Balance at December 31, 2019

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 notes due 2025, net
Cost of convertible notes hedge related to the convertible

notes due 2025

Sale of warrants related to the convertible notes due 2025

— 

5,273 

— 
10,801 
— 

— 
— 
— 
— 
— 

123,109  $

4,002 

— 
— 

— 
— 

— 

— 
— 
— 
— 
— 
— 
— 
1  $

— 

— 

— 
— 
— 

— 
— 
— 
— 
— 
1  $

— 

— 
— 

— 
— 

— 

2,806 
19,766 
32,319 
— 
11,188 
— 
— 

(38,948)

— 
— 
— 
— 
— 
(11,627)
— 

— 

— 
— 
— 
— 
— 
— 
1,398 

353,335  $

(346,302) $

742  $

27 

4,985 

(8,198)
58,857 
35,387 

(36,313)
29,818 
20,417 
— 
— 

(27)

— 

— 
— 
— 

— 
— 
— 
161,148 
— 

— 

— 

— 
— 
— 

— 
— 
— 
— 
(1,665)

458,315  $

(185,181) $

(923) $

8,395 

(68,330)
116,502 

(117,108)
96,351 

— 

— 
— 

— 
— 

— 

— 
— 

— 
— 

(9,126)

(38,948)

2,806 
19,766 
32,319 
— 
11,188 
(11,627)
1,398 
7,776 

— 

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 

Enphase Energy, Inc. | 2020 Form 10-K | 81

Table of Contents

Equity component of partial settlement of convertible notes
due 2024, net of tax
Partial settlement of convertible notes due 2024
Exercise of convertible notes due 2024 Hedge
Exercise of warrants
Change in fair value of common stock related to acquisition
Stock-based compensation
Net income
Foreign currency translation adjustment

— 
1,851 
(1,851)
1,851 
— 
— 
— 
— 

Balance at December 31, 2020

128,962  $

— 
— 
— 
— 
— 
— 
— 
— 
1  $

(306,220)
301,015 
— 
— 
3,321 
42,503 
— 
— 

534,744  $

— 
— 
— 
— 
— 
— 
133,995 
— 
(51,186) $

— 
— 
— 
— 
— 
— 
— 
1,357 

434  $

(306,220)
301,015 
— 
— 
3,321 
42,503 
133,995 
1,357 
483,993 

See Notes to Consolidated Financial Statements.

Enphase Energy, Inc. | 2020 Form 10-K | 82

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ENPHASE ENERGY, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

Cash flows from operating activities:

Net income (loss)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization
Provision for doubtful accounts
Asset impairment
Loss on partial repurchase of convertibles notes due 2024
Deemed repayment of convertible notes due 2024 attributable to accreted debt discount
Non-cash interest expense
Financing fees on extinguishment of debt
Fees paid for repurchase and exchange of convertible notes due 2023
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
Intangible 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 investment in private company
Acquisition

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
Proceeds from issuance of common stock, net of issuance costs
Proceeds from debt, net of issuance costs
Partial repurchase of convertible notes due 2024
Proceeds from exercise of equity awards and employee stock purchase plan
Payment of withholding taxes related to net share settlement of equity awards

Net cash provided by financing activities
Effect of exchange rate changes on cash and cash equivalents

Net increase 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

$

Enphase Energy, Inc. | 2020 Form 10-K | 83

Years Ended December 31,

2020

2019

2018

$

133,995  $

161,148  $

(11,627)

18,103 
425 
— 
3,037 
(3,132)
18,825 
— 
— 
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 
826 
383,270 
296,109 
679,379  $

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

9,667 
711 
1,601 
— 
— 
2,701 
— 
— 
11,432 
— 
123 

(13,515)
9,732 
(3,130)
(10,000)
23,082 
1,478 
(6,123)
16,132 

(4,151)
— 
(15,000)
(19,151)

— 
— 
— 
— 
(9,976)
19,766 
68,024 
— 
2,800 
— 
80,614 
(502)
77,093 
29,144 
106,237 

Table of Contents

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:

Acquisition funded by issuance of common stock
Purchases of fixed assets included in accounts payable
Accrued interest payable unpaid upon exchange of convertible notes due 2023

Years Ended December 31,

2020

2019

2018

679,379 
— 

679,379  $

1,875  $
3,452  $

—  $
3,630  $
—  $

251,409 
44,700 

296,109  $

2,689  $
1,755  $

—  $
672  $
833  $

106,237 
— 
106,237 

6,343 
775 

19,219 
895 
— 

$

$
$

$
$
$

See Notes to Consolidated Financial Statements.

Enphase Energy, Inc. | 2020 Form 10-K | 84

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1.    DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION

Description of Business

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 single 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,  inventory
valuation, accrued warranty obligations, fair value of debt derivatives and convertible notes, 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,  probable  loss  recovery  of  tariff  refunds,  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
management’s estimates using different assumptions or under different conditions.

The  worldwide  spread  of  the  COVID-19  virus  has  resulted  in  a  global  slowdown  of  economic  activity  which  decreased  demand  for  a  broad  variety  of  goods  and  services,
including from our customers, while also disrupting sales channels and marketing activities for an unknown period of time and may continue to create significant uncertainty in future
operational  and  financial  performance.  The  Company  expects  this  to  have  negative  impact  on  its  sales  and  its  results  of  operations.  In  preparing  the  Company’s  consolidated
financial statements in accordance with GAAP, the Company is required to make estimates, assumptions and judgments that affect the amounts reported in its financial statements
and  the  accompanying  disclosures.  Estimates  and  assumptions  about  future  events  and  their  effects  cannot  be  determined  with  certainty  and  therefore  require  the  exercise  of
judgment. As of the date of issuance of these financial statements, the Company is not aware of any specific event or circumstance that would require the Company to update its
estimates,  judgments  or  revise  the  carrying  value  of  its  assets  or  liabilities.  These  estimates  may  change,  as  new  events  occur  and  additional  information  is  obtained,  and  are
recognized in the consolidated financial statements as soon as they become known. Actual results could differ from those estimates and any such differences may be material to the
Company’s financial statements.

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, and storage solutions to distributors, large installers, original equipment manufacturers (“OEMs”) and strategic partners.

Enphase Energy, Inc. | 2020 Form 10-K | 85

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On January 1, 2018, the Company adopted Accounting Standards Codification (“ASC”) No. 606, “Revenue Recognition” (“ASC 606” or “Topic 606”) and applied the modified
retrospective method to all contracts that were not completed as of January 1, 2018. The most significant impacts upon adoption of Topic 606 were how the Company accounts for
revenue  related  to  its  Envoy™  communications  device  and  related  Enphase  Enlighten  Software™,  or  Enlighten,  service  and  the  timing  of  when  certain  sales  incentives  are
recognized. The full consideration for these products represents a single performance obligation and is deferred and recognized over the estimated service period.

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  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  and  storage  solutions  to  distributors,  large  installers,  OEMs  and  strategic  partners.  Microinverter  units,  microinverter  accessories,  and
storage  solutions  are  delivered  to  customers  at  a  point  in  time,  and  the  Company  recognizes  revenue  for  these  products  when  the  Company  transfers  control  of  the
product to the customer, which is generally upon shipment.

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.

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 previously sold its Envoy communications device to certain customers
under a long-term financing arrangement. Under this financing arrangement, the Company nets the unbilled receivables against deferred revenue.

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  depreciation  and  amortization  of  manufacturing  test  equipment.  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.

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Cash and Cash Equivalents

The  Company  considers  all  highly  liquid  investments,  such  as  certificates  of  deposit  and  money  market  instruments  with  maturities  of  three  months  or  less  at  the  time  of
acquisition to be cash equivalents. For all periods presented, its cash balances consist of amounts held in non-interest-bearing and interest-bearing deposits and money market
accounts.

Restricted Cash

Restricted cash represents cash held as certificate of deposit collateralized under a letter of credit issued to a customer. The letter of credit was required as a performance
security in a face amount equal to the aggregate purchase price of the executed sales agreement. The letter of credit was issued per the terms of the executed sales agreement
with a customer for safe harbor prepayment and the Company had collateralized a certificate of deposit under this letter of credit in an amount of $44.7 million, which was reflected
as restricted cash on the Company’s consolidated balance sheet as of December 31, 2019. As of December 31, 2020, the Company does not have restricted cash balance.

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,  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, the Company issued $320 million aggregate principal amount of 0.25% convertible 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  a  derivative  liabilities  and  convertible  notes  hedge  as
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 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 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  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, the Company does not have any convertible note derivatives. See Note 11. “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.

Enphase Energy, Inc. | 2020 Form 10-K | 87

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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 expenses
Write-offs, net of recoveries

Balance, at end of year

Inventory

2020

December 31,
2019
(In thousands)

564  $
425 
(527)
462  $

2,138  $
217 
(1,791)

564  $

$

$

2018

2,378 
711 
(951)
2,138 

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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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, $1.1 million and $1.6 million for the years ended 2020, 2019
and 2018, 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.

Goodwill

Goodwill  results  from  the  purchase  consideration  paid  in  excess  of  the  fair  value  of  the  net  assets  recorded  in  connection  with  a  business  acquisition.  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 2020, 2019 and 2018 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  3  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.

Contract Liabilities

Contract liabilities are recorded as deferred revenue on the accompanying consolidated balance sheets and include payments received in advance of performance obligations

under the contract and are realized when the associated revenue is recognized under the contract.

Enphase Energy, Inc. | 2020 Form 10-K | 89

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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.

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.

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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 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 9. “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.

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.

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.

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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.

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 for all periods presented.

Income Taxes

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

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

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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 Adopted Accounting Pronouncements

In August 2018, the FASB issued ASU 2018-15, “Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract,” to
reduce diversity in practice in accounting for the costs of implementing cloud computing arrangements that are service contracts. ASU 2018-15 allows entities to apply the guidance
in the ASC 350-40, “Intangibles–Goodwill and Other–Internal-Use Software,” to determine which implementation costs are eligible to be capitalized as assets in a cloud computing
arrangement that is considered a service contract. ASU 2018-15 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early
adoption is permitted, including adoption in any interim period. Entities have the option to apply the guidance prospectively to all implementation costs incurred after the date of
adoption or retrospectively and are required to make certain disclosures in the interim and annual period of adoption. The Company adopted the new standard effective January 1,
2020 on a prospective basis and the adoption of this guidance did not have a material impact on its consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” which requires the
measurement and recognition of expected credit losses for financial assets held at amortized cost. ASU 2016-13 replaces the existing incurred loss impairment model with a current
expected  credit  loss  (CECL)  model  which  will  result  in  earlier  recognition  of  credit  losses.  On  January  1,  2020,  the  Company  on  a  prospective  basis  adopted  Topic  326,  the
measurement of expected credit losses under the CECL model is applicable to financial assets measured at amortized cost, including accounts receivable. The adoption of this
guidance did not have a material impact on the Company’s consolidated financial statements.

Recently Issued Accounting Pronouncements Not Yet Effective

In August 2020, the FASB issued Account Standard 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  amendment  will  be  effective  for  the  Company  with  annual  periods  beginning  January  1,  2022  and  early
adoption is permitted. The Company is evaluating the accounting, transition and disclosure requirements of the standard.

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3.    REVENUE RECOGNITION

Disaggregated Revenue

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The Company has one 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

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)
Long-term contract liabilities (Deferred revenues)

Years Ended December 31,

2020

2019

(In thousands)

$

$

$

$

637,879  $
136,546 
774,425  $

728,254  $

46,171 

774,425  $

523,577 
100,756 
624,333 

584,556 
39,777 
624,333 

December 31,
2020

December 31,
2019

$

(In thousands)

182,165  $

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

145,413 
15,055 
42,087 
81,783 
100,204 

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, 2020.

Significant changes in the balances of contract assets (prepaid expenses and other assets) during the period are as follows (in thousands):

Contract Assets

Balance on December 31, 2019

Amount recognized
Increase

Balance as of December 31, 2020

$

$

57,142 
(17,652)
30,375 
69,865 

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) during the period are as follows (in thousands):

Contract Liabilities

Balance on December 31, 2019

Revenue recognized
Increase due to billings

Balance as of December 31, 2020

Remaining Performance Obligations

$

$

181,987 
(87,555)
78,706 
173,138 

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:

2021
2022
2023
2024
2025
Thereafter

Total

4.    INVENTORY

Inventory consist of the following:

Raw materials
Finished goods
Total inventory

December 31,
2020
(In thousands)

$

$

47,665 
38,402 
32,569 
27,311 
20,291 
6,900 
173,138 

December 31,
2020

December 31,
2019

$

$

(In thousands)

10,140  $
31,624 
41,764  $

4,197 
27,859 
32,056 

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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
Leasehold improvements
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,

2020

2019

(In thousands)

$

$

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

48,114 
2,404 
1,698 
11,656 
8,713 
8,446 
81,031 
(52,095)
28,936 

Depreciation expense for property and equipment for the years ended December 31, 2020, 2019 and 2018 was $9.7 million, $7.3 million and $8.3 million, respectively.

As of December 31, 2020 and 2019, unamortized capitalized software costs were $4.8 million and $0.8 million, respectively.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

6.    GOODWILL AND INTANGIBLE ASSETS

The Company’s goodwill and purchased intangible assets as of December 31, 2020 and December 31, 2019 are as follows:

Goodwill

$

24,783  $

—  $

—  $

24,783  $

24,783  $

—  $

24,783 

Gross

Additions

Accumulated
Amortization

December 31, 2020

Net

(In thousands)

Gross

December 31, 2019
Accumulated
Amortization

Net

Intangible assets:

Other indefinite-lived intangibles
Intangible assets with finite lives:
Developed technology
Customer relationships

Total purchased intangible assets $

286 

— 

13,100 
23,100 
36,486  $

— 
3,321 
3,321  $

— 

(5,276)
(5,723)

(10,999) $

286 

286 

— 

7,824 
20,698 
28,808  $

13,100 
23,100 
36,486  $

(3,093)
(2,814)
(5,907) $

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

Developed technology, and patents and licensed technology
Customer relationships

Total amortization expense

Years Ended December 31,

2020

2019

$

$

(In thousands)
2,183  $
2,909 
5,092  $

286 

10,007 
20,286 
30,579 

2,184 
2,543 
4,727 

Amortization of developed technology, patents and licensed technology is recorded to sales and marketing expense. The developed technology acquired from the Company’s
acquisition  of  SunPower  Corporation’s  (“SunPower”)  microinverter  business  in  August  2018  was  embedded  in  the  microinverters  that  SunPower  sold  to  its  customers.  The
Company does not actively use the developed technology acquired from SunPower and holds the developed technology to prevent others from using it. Accordingly, the Company
accounts for the developed technology as a defensive intangible asset and amortizes the associated value over a period of six years from the date of acquisition.

The  master  supply  agreement  (“MSA”)  entered  into  with  SunPower  in  August  2018  provides  the  Company  with  the  exclusive  right  to  supply  SunPower  with  module  level
power electronics for a period of five years, with options for renewals. The exclusivity arrangement extends throughout the term of the MSA, which comprises all of the expected
cash  flows  from  the  customer  relationship  intangible  asset,  and  was  a  condition  to,  and  was  an  essential  part  of  the  acquisition  of  SunPower’s  microinverter  business  by  the
Company. As the original $23.1 million fair value ascribed to the customer relationship intangible asset represents payments to a customer, the Company amortizes the value of the
customer relationship intangible asset as a reduction to revenue using a pattern of economic benefit method over a useful life of nine years. During the fourth quarter of 2020, the
Company signed an amendment to the MSA which increased the period of exclusive right to supply by another three months, and the associated incremental non-cash $3.3 million
fair value of equity is added to the customer relationship intangible asset will follow the same amortization pattern.

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7. 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
Other

Total accrued liabilities

8.    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
Noncurrent

Changes in Estimates

December 31,
2020

December 31,
2019

$

$

(In thousands)
6,634  $

36,622 
10,300 
4,542 
5,500 
12,944 
76,542  $

2020

Years Ended December 31,

2019

(In thousands)

2018

$

$

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  $

5,524 
24,198 
4,908 
3,170 
1,729 
7,563 
47,092 

29,816 
3,040 
6,515 
(8,579)
1,989 
(1,487)
31,294 
(8,083)
23,211 

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:

2020

In 2020, the Company recorded a $8.8 million increase to warranty expense based on continuing analysis of field performance data and diagnostic root-cause failure analysis
primarily  relating  to  its  prior  generation  products.  The  Company  also  recorded  additional  warranty  expense  of  $1.2  million  related  to  unit  costs  for  prior  generation  microinverter
replacement driven by tariffs and labor reimbursement costs expected to be paid to third party installers performing replacement services.

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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.

2018

In  2018,  the  Company  recorded  a  $0.9  million  increase  to  warranty  expense  related  to  cost  increases  primarily  for  backwards  compatibility  cables,  supply  constrained
inventory  components  as  well  as  tariffs.  The  Company  also  recorded  additional  warranty  expense  of  $3.3  million  based  on  continuing  analysis  of  field  performance  data  and
diagnostic  root-cause  failure  analysis  primarily  relating  to  its  second  and  third  generation  products.  In  addition,  the  Company  recorded  an  increase  of  $2.1  million  related  to
increased  estimated  claim  rates  and  an  increase  to  warranty  expense  of  $0.2  million  for  labor  reimbursement  costs  expected  to  be  paid  to  third  party  installers  performing
replacement  services.  These  increases  were  partially  offset  by  a  $1.5  million  reduction  to  warranty  expense,  presented  as  “Other”  in  the  table  above,  related  to  changes  in  the
discount rates for fair value accounting.

9.    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.

Level 1. The Company considers all highly liquid investments, such as certificates of deposit and money market instruments with maturities of three months or less at the time
of acquisition to be cash equivalents. For all periods presented, its cash balances consist of amounts held in non-interest-bearing and interest-bearing deposits and money market
accounts and are within Level 1 of the fair value hierarchy because they are valued using quoted market prices for identical instruments in active markets. As of December 31,
2020, cash and cash equivalents balance includes money market funds of $654.7 million.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Level 2.

Convertible Notes due 2025 Derivatives.

On March 9, 2020, the Company issued $320 million aggregate principal amount of 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. 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 satisfied the share reservation condition (as
defined in the relevant indenture associated with the Notes due 2025). The Company will 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 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  of  $116.3  million,  $117.1  million  and  $96.4  million,  respectively,  and  were  then
reclassified to additional paid-in-capital in the 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. See Note 11. “Debt” for additional information related to these transactions.

The fair value of the Convertible notes embedded derivative was estimated using Binomial Lattice model and the fair value of Convertible notes hedge and Warrants liability
was estimated using Black-Scholes-Merton model. The significant observable inputs, either directly or indirectly, and assumptions used in the models to calculate the fair value of
the derivatives include the Company’s common stock price, exercise price of the derivatives, risk-free interest rate, volatility, annual coupon rate and remaining contractual term.

Notes due 2025 and Notes due 2024.

The Company carries the Notes due 2025 and Notes due 2024 (as defined below) at face value less unamortized discount and issuance costs on its consolidated balance
sheets. The fair value of the Notes due 2025 and Notes due 2024 was $725.5 million and $747.1 million, respectively, as of December 31, 2020 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  2025  and  Notes  due  2024  to  be  a  Level  2
measurement as they are not actively traded.

Level 3.

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 sheet. 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, 2020, 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, 2020. 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

Warranty Obligations.

The following table presents the Company’s warranty obligations that were measured at fair value on a recurring basis and its categorization within the fair value hierarchy.

Liabilities:

Warranty obligations

Current
Non-current

Total warranty obligations measured at fair value

Total liabilities measured at fair value

December 31,
2020

December 31, 2019

(In thousands)

Level 3

Level 3

$

$

8,267  $

20,469 
28,736 
28,736  $

6,794 
13,012 
19,806 
19,806 

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

2020

Years Ended December 31,

2019

(In thousands)

2018

19,806  $

7,021 
5,039 
(7,781)
3,255 
1,396 

28,736  $

11,757  $
5,244 
6,167 
(6,212)
2,326 
524 
19,806  $

9,791 
3,040 
2,455 
(4,030)
1,989 
(1,488)
11,757 

$

$

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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, 2020 and December 31, 2019, 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

Warranty obligations for microinverters sold since
January 1, 2014

Valuation Technique

Discounted cash flows

Description of Significant Unobservable Input
Profit element and risk premium

Credit-adjusted risk-free rate

Percent Used
(Weighted Average)

December 31,
2020
15%

13%

December 31,
2019
14%

16%

Sensitivity of Level 3 Inputs - Warranty Obligations

Each of the significant unobservable inputs is independent of the other. The profit element and risk premium are estimated based on requirements of a third-party participant
willing to assume the Company’s warranty obligations. The credit‑adjusted risk‑free rate (“discount rate”) is determined by reference to the Company’s own credit standing at the fair
value  measurement  date.  Increasing  the  profit  element  and  risk  premium  input  by  100  basis  points  would  result  in  a  $0.2  million  increase  to  the  liability.  Decreasing  the  profit
element and risk premium by 100 basis points would result in a $0.2 million reduction of the liability. Increasing the discount rate by 100 basis points would result in a $1.4 million
reduction of the liability. Decreasing the discount rate by 100 basis points would result in a $1.6 million increase to the liability.

10.    RESTRUCTURING    

Restructuring expense consist of the following:

Redundancy and employee severance and benefit arrangements
Asset impairments
Consultants engaged in restructuring activities
Lease loss reserves (benefit)

Total restructuring charges

2018 Plan

2020

Years Ended December 31,

2019

(In thousands)

2018

—  $
— 
— 
— 
—  $

1,575  $
1,124 
— 
(100)
2,599  $

2,228 
1,601 
— 
300 
4,129 

$

$

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.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The following table provides information regarding changes in the Company’s 2018 Plan accrued restructuring balance for the periods indicated.

Balance as of December 31, 2018

Charges
Cash payments
Non-cash settlement and other

Balance as of December 31, 2019

Redundancy and
Employee Severance and
Benefits

Lease Loss Reserves and
Contractual Obligations
(In thousands)

Total

$

$

904  $

2,699 
(1,610)
(1,993)

—  $

288  $
— 
— 
(288)

—  $

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

2016 Plan

2020

Years Ended December 31,
2019
(In thousands)

2018

$

$

—  $
— 
— 
—  $

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

1,192 
2,699 
(1,610)
(2,281)
— 

2,228 
1,636 
340 
4,204 

In the third quarter of 2016, the Company began implementing restructuring actions (the “2016 Plan”) to lower its operating expenses. The restructuring actions have included
reductions  in  the  Company’s  global  workforce,  the  elimination  of  certain  non-core  projects,  consolidation  of  office  space  at  the  Company’s  corporate  headquarters  and  the
engagement  of  management  consultants  to  assist  the  Company  in  making  organizational  and  structural  changes  to  improve  operational  efficiencies  and  reduce  expenses.  The
Company completed its restructuring activities under the 2016 Plan in 2017.

The following table provides information regarding changes in the Company’s 2016 Plan accrued restructuring balance for the periods indicated.

Balance as of December 31, 2018

Other 

(1)

Balance as of December 31, 2019

(1)    Adoption of ASU 2016-02 -Leases.

Employee Severance and
Benefits

Asset Impairments

Lease Loss Reserves and
Contractual Obligations

Total

$

— 
— 
—  $

(In thousands)
—  $
— 
—  $

1,591 
(1,591)

—  $

1,591 
(1,591)
— 

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11.    DEBT

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

Convertible notes
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

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

Long-term debt

December 31,
2020

December 31,
2019

(In thousands)

$

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  $

— 
— 
— 

132,000 
(35,815)
96,185 

5,000 
(143)
4,857 

4,501 
105,543 
(2,884)
102,659 

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.

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The Notes due 2025 may be converted prior to the close of business on the business day immediately preceding September 1, 2024, in multiples of $1,000 principal amount,
at the option of the holder only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2020 (and only during
such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive
trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable
trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in which the “trading price” (as defined in the relevant
indenture) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s
common  stock  and  the  conversion  rate  on  each  such  trading  day;  or  (3)  upon  the  occurrence  of  specified  corporate  events.  On  and  after  September  1,  2024  until  the  close  of
business on the second scheduled trading day immediately preceding the maturity date of March 1, 2025, holders may convert their notes at any time, regardless of the foregoing
circumstances. Upon the occurrence of a fundamental change (as defined in the relevant indenture), holders may require the Company to repurchase all or a portion of their Notes
due 2025 for cash at a price equal to 100% of the principal amount of the notes to be repurchased plus any accrued and unpaid interest to, but excluding, the fundamental change
repurchase date.

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

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
(“share reservation condition”), the Company would be 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.

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 (“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.

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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 condensed consolidated balance sheet in the second quarter of 2020 and is
no longer remeasured as long as it continues to meet the conditions for equity classification. The Company recorded the change in the fair value of the embedded derivative in other
expense, net in the consolidated statement of operations during the year ended December 31, 2020.

The Company separated the Notes due 2025 into liability and equity components, this 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.

The following table presents the fair value and the change in fair value for the convertible note embedded derivative (in thousands):

Convertible note embedded derivative liability

Fair value as of March 9, 2020
Change in the fair value

Fair value as of May 20, 2020

$

$

68,700 
47,600 
116,300 

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.

The following table presents the total amount of interest cost recognized relating to the Notes due 2025 (in thousands):

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

Total interest cost recognized

Year Ended December 31, 2020

$

$

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  remain  unchanged  from  the  date  of  issuance.  The  remaining

unamortized debt discount was $58.6 million as of December 31, 2020, and will be amortized over approximately 4.2 years.

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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 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.  As  of
December 31, 2020, the Company had not purchased any shares under the convertible note hedge transactions.

Additionally, the Company separately entered into privately-negotiated warrant transactions (the “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 Warrants. If the market value per share of the Company’s common stock, as measured under the Warrants, exceeds the strike price
of the Warrants, the Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the Warrants in
cash. Taken together, the purchase of the convertible note hedges and the sale of the 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 Warrants are only exercisable on the applicable expiration dates in accordance with
the  agreements  relating  to  each  of  the  Warrants.  Subject  to  the  other  terms  of  the  Warrants,  the  first  expiration  date  applicable  to  the  Warrants  is  June  1,  2025,  and  the  final
expiration date applicable to the Warrants is September 23, 2025. As of December 31, 2020, the Warrants had not been exercised and remained outstanding.

For the period from March 9, 2020, the issuance date of the convertible notes hedge and warrant transactions, 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 convertibles note hedge and the warrant transactions could only be settled on net cash
settlement basis. As a result the convertible note hedge and the warrants transaction 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 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  condensed
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  year  ended
December 31, 2020.

The following table presents the fair value and the change in fair value for the Convertible notes hedge asset and Warrants liability:

Fair value as of March 9, 2020

Change in the fair value

Fair value as of May 20, 2020

Convertible notes hedge

Warrants liability

$

$

(In thousands)

89,056  $
28,052 
117,108  $

71,552 
24,799 
96,351 

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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 $20.5010 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.

The  Notes  due  2024  may  be  converted  on  any  day  prior  to  the  close  of  business  on  the  business  day  immediately  preceding  December  1,  2023,  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
September 30, 2019 (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 $26.6513
(130% of the conversion price) on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “measurement period”) in
which  the  “trading  price”  (as  defined  in  the  relevant  indenture)  per  $1,000  principal  amount  of  notes  for  each  trading  day  of  the  measurement  period  was  less  than  98%  of  the
product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events.
On and after December 1, 2023 until the close of business on the second scheduled trading day immediately preceding the maturity date of June 1, 2024, 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 2024 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, 2020, the sale price of the Company’s common stock was greater than or equal to $26.6513 (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, 2020. As a result, as of December 31, 2020, the Notes
due 2024 are convertible at the holders’ option through March 31, 2021. Accordingly, the Company classified the net carrying amount of the Notes due 2024 of $69.0 million as
Debt, current on the consolidated balance sheet as of December 31, 2020. From January 1, 2021 through February 12, 2021, the Company has received the request for conversion
of  approximately  $61.5  million  in  principal  amount  of  Notes  due  2024,  of  which  the  Company  has  elected  to  settle  the  aggregate  principal  amount  of  the  Notes  due  2024  in  a
combination of cash and any excess in shares of the Company’s common stock in accordance with the applicable indenture. Such conversion will be settled in March 2021.

In accounting for the issuance of the Notes due 2024, on June 5, 2019, the Company separated the Notes due 2024 into liability and equity components. The carrying amount
of the liability component of approximately $95.6 million was calculated by using a discount rate of 7.75%, which was the Company’s borrowing rate on the date of the issuance of
the notes for a similar debt instrument without the conversion feature. The carrying amount of the equity component of approximately $36.4 million, representing the conversion
option, was determined by deducting the fair value of the liability component from the par value of the Notes due 2024. The equity component of the Notes due 2024 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 2024 and the liability component (the “debt discount”) is amortized to interest expense using the effective interest method over the term of the
Notes due 2024.

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The Company separated the Notes due 2024 into liability and equity components, this resulted in a tax basis difference associated with the liability component that represents
a temporary difference. The Company recognized the deferred taxes of $0.3 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 2024 were approximately $4.6 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 liability and equity components using the same proportions as the proceeds from the Notes due
2024. Transaction costs attributable to the liability component were approximately $3.3 million, 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  2024.  The  transaction  costs  attributable  to  the  equity  component  were
approximately $1.3 million and were netted with the equity component in stockholders’ equity. As of December 31, 2020 and 2019, the unamortized deferred issuance cost for the
Notes due 2024 was $1.5 million and $2.9 million, respectively, on the consolidated balance sheets.

During the fourth quarter of 2020, holders converted $43.9 million in aggregate principal amount of the Notes due 2024, the principal amount of which was repaid in cash. Of
the $43.9 million in aggregate principal amount, $38.5 million in aggregate principal amount was settled pursuant to an exchange agreement entered into in December 2020 with
certain holders of Notes due 2024. The Company also issued 1.9 million shares of its common stock to the holders with an aggregate fair value of $301.0 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 Company’s exercise of the associated note hedging
arrangements  discussed  below.  The  total  amount  of  $43.9  million  paid  to  partially  settle  the  Notes  due  2024  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 $37.2 million. The residual of the conversion price of $6.7 million was allocated to the equity component of the Notes due 2024 as a reduction of
additional paid-in capital. The fair value of the notes settlement was calculated using a discount rate of 5.75%, representing an estimate of the Company's borrowing rate at the date
of  repurchase  with  a  remaining  expected  life  of  approximately  3.6  years.  As  part  of  the  settlement,  the  Company  wrote-off  the  $8.9  million  unamortized  debt  discount  and
$0.8 million debt issuance cost apportioned to the principal amount of Notes due 2024 settled. The Company also recorded a loss on partial settlement of the Notes due 2024 of
$3.0 million in Other expense, net, 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. As of December 31, 2020, $88.1 million aggregate principal amount of the Notes due 2024 remains 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

Years Ended December 31,

2020

2019

(In thousands)
1,284  $
6,325 
646 
8,255  $

759 
3,492 
375 
4,626 

$

$

The effective interest rate on the liability component Notes due 2024 was 7.75% for the year ended December 31, 2020, which remains unchanged from the date of issuance.
The  remaining  unamortized  debt  discount  was  $17.6  million  and  $32.9  million  as  of  December  31,  2020  and  December  31,  2019,  respectively,  and  will  be  amortized  over
approximately 3.4 years from December 31, 2020.

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Notes due 2024 Hedge and Warrant Transactions

In connection with the offering of the Notes due 2024, the Company entered into privately-negotiated convertible note hedge transactions 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 $20.5010 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 convertible note 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.

As  a  result  of  the  conversion  request  received  from  the  holders  of  $43.9  million  in  aggregate  principal  amount  of  the  Notes  due  2024  in  the  fourth  quarter  of  2020,  the
Company exercised the 2.1 million shares representing proportionate number of the convertible note hedge transaction and received 1.9 million shares on net basis of its common
stock during the period. As of December 31, 2020, option to purchase a total of approximately 4.3 million shares remain outstanding.

Additionally, the Company separately entered into privately-negotiated warrant transactions (the “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 $25.2320 per share. The Company received aggregate proceeds
of approximately $29.8 million from the sale of the Warrants. If the market value per share of the Company’s common stock, as measured under the Warrants, exceeds the strike
price of the Warrants, the Warrants will have a dilutive effect on the Company’s earnings per share, unless the Company elects, subject to certain conditions, to settle the Warrants
in cash. Taken together, the purchase of the convertible note hedges and the sale of the Warrants are intended to reduce potential dilution from the conversion of the Notes due
2024  and  to  effectively  increase  the  overall  conversion  price  from  $20.5010  to  $25.2320  per  share.  The  Warrants  are  only  exercisable  on  the  applicable  expiration  dates  in
accordance with the Warrants. Subject to the other terms of the Warrants, the first expiration date applicable to the Warrants is September 1, 2024, and the final expiration date
applicable to the Warrants is April 22, 2025.

During the fourth quarter of 2020, the Company entered into partial unwind agreements to unwind number of warrants exercisable under the note hedge arrangements and to
issue  approximately  2.1  million  Warrants  on  a  net  basis,  resulting  in  a  net  issuance  of  approximately  1.9  million  shares  of  the  Company’s  common  stock  in  connection  with  the
exchange of the Notes due 2024. As of December 31, 2020, Warrants exercisable to purchase a total of approximately 4.3 million shares remains outstanding.

Given that the transactions meet certain accounting criteria, the Notes due 2024 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 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, 2020 and December 31, 2019, $5.0 million aggregate principal amount of the Notes due 2023 remains outstanding.

Enphase Energy, Inc. | 2020 Form 10-K | 110

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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 180.0180 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

2019

(In thousands)
200  $

40 

240  $

1,226 
245 
1,471 

$

$

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  will  be  relieved  by  September  2021  as  the  underlying  receivables  are  settled.  As  of
December 31, 2020, the total sale of long-term financing receivable recorded as debt of $1.9 million remains outstanding.

12.    COMMITMENTS AND CONTINGENCIES

Operating Leases

The  Company  leases  office  facilities  under  noncancelable  operating  leases  that  expire  on  various  dates  through  2031,  some  of  which  may  include  options  to  extend  the

leases for up to 12 years.

The components of lease expense are presented as follows:

Operating lease costs

Years Ended December 31,

2020

2019

$

(In thousands)
5,332  $

4,041 

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The components of lease liabilities are presented as follows:

Operating lease liabilities, current (Accrued liabilities)
Operating lease liabilities, noncurrent (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, 2020 are as follows:

Year:

2021
2022
2023
2024
2025
2026 and thereafter
Total lease payments
Less: imputed lease interest

Total lease liabilities

Purchase Obligations

December 31,
2020

December 31,
2019

$

$

(In thousands)
4,542  $

15,209 
19,751  $

3,170 
9,542 
12,712 

6.4 years
7.7%

5.5 years
8.6%

Years Ended December 31,

2020

2019

(In thousands)

4,762  $

10,625  $

3,636 

4,834 

$

$

Lease Amounts
(In thousands)

5,830 
4,677 
4,056 
3,069 
2,275 
3,968 
23,875 
(4,124)
19,751 

$

$

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, 2020, these purchase obligations totaled approximately $162.2 million.

Letter of Credits

As of December 31, 2019, the Company had a standby letter of credit in the aggregate amount of $44.7 million, primarily in connection with one of its customer contracts. The
letter of credit served as a performance security for product delivered to the customer in the first quarter of 2020 and expired on April 30, 2020. No amounts were drawn against this
letter of credit. As of December 31, 2020, the Company has no letter of credits outstanding.

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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 February 12, 2021, the Company is not currently a party to any
matters that the 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 has 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 is equal to the approved refund requests available to us prior to issuance of the financial statements on February 12, 2021.

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. 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 statements 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 current period. 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 $14.7 million is 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,
2020. The Company is unable to predict the timing of receipt of the $14.7 million approved.

The Tariff Exclusion expired on August 7, 2020 and those microinverter products now are subject to tariffs. The Company 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.

13.    SALE OF COMMON STOCK

In February 2018, the Company entered into a Securities Purchase Agreement with an investor pursuant to which the Company, in a private placement, issued and sold to the

investor approximately 9.5 million shares of the Company’s common stock at a price per share of $2.10, for gross proceeds of approximately $20.0 million.

14.    STOCK-BASED COMPENSATION

Description of Equity Incentive Plans

2006 Plan

Under the Company’s 2006 Equity Incentive Plan (the “2006 Plan”), equity awards granted generally vest over a 4‑year period from the date of grant with a contractual term of
up to 10 years. As of December 31, 2020, there were less than 0.1 million shares of options outstanding under the 2006 Plan. No further stock options or other stock awards may be
granted under the 2006 Plan.

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2011 Plan

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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.  The  number  of  shares  of  the  Company’s  common  stock  authorized  for  issuance  under  the  2011  Plan  automatically  increases  on  each
January 1 by 4.5% of the total number of shares of the Company’s common stock outstanding on December 31 of the preceding calendar year, or such lesser number of shares of
common stock as determined by the board of directors. As of December 31, 2020, 8,940,388 shares remained available for issuance pursuant to future grants under the 2011 Plan.
On January 1, 2021, the shares available for issuance under the 2011 Plan automatically increased by 5,803,296 shares.

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, 2020, 1,288,887 shares remained available for future issuance under the ESPP. On January 1, 2021, 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.

Generally,  all  full-time  employees  in  Australia,  France,  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.

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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

Restricted Stock Units

2020

$

Years Ended December 31,
2019

$

38.45
3.8
86.4%
0.1%
—%

9.16
3.8
89.1%
2.1%
—%

2018

$

2.83
4.0
88.5%
2.6%
—%

The fair value of the Company’s restricted stock units (“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 performance stock units (“PSU”) awards granted was based upon the closing price of the Company’s stock price on the date of
grant. The fair value of awards of the Company’s PSU awards containing market conditions was determined using a Monte Carlo simulation model based upon the terms of the
conditions, the expected volatility of the underlying security, and other relevant factors.

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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

2020

Years Ended December 31,
2019
(In thousands)

2018

$

$

$

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

2020

Years Ended December 31,
2019
(In thousands)

2018

$

$

39,841  $

2,662 

42,503  $

19,216  $
960 
20,176  $

1,071 
2,940 
3,074 
4,347 
— 
11,432 

— 

10,691 
741 
11,432 

As  of  December  31,  2020,  there  was  approximately  $89.7  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 2.9 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, 2017

Granted
Exercised
Canceled

Outstanding at December 31, 2018

Granted
Exercised
Canceled

Outstanding at December 31, 2019

Granted
Exercised
Canceled

Outstanding at December 31, 2020
Vested and expected to vest at December 31, 2020

Exercisable at December 31, 2020

Number of
Shares
Outstanding
(In thousands)

Weighted-
Average
Exercise Price
per Share

Weighted-
Average
Remaining
Contractual
Term
(Years)

Aggregate
Intrinsic
(1)
Value 
(In thousands)

8,426  $
213 
(1,346)
(521)
6,772  $
43 
(2,616)
(102)
4,097  $
11 
(1,494)
(82)
2,532  $
2,532  $
2,089  $

1.77 
4.43 
1.75 
2.94 
1.76 
14.58 
1.22 
4.07 
2.18 
64.17 
2.74 
6.94 

1.96 

1.96 

1.95 

$

$

$

$

$

$

5,096 

31,093 

114,089 

439,268 

439,268 

362,526 

3.7

3.7

3.7

(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, 2020 is based on the closing price of the last trading day during the period ended December 31, 2020. The Company’s stock fair value
used in this computation was $175.47 per share.

The following table summarizes information about stock options outstanding at December 31, 2020.

Range of Exercise Prices

$0.70 —– $1.11
$1.29 —– $1.29
$1.31 —– $1.31
$1.37 —– $14.58
$64.17 —– $64.17

Total

Number of
Shares
(In thousands)

555 
1,000 
670 
296 
11 
2,532 

Options Outstanding
Weighted-
Average
Remaining
Life
(Years)
4.2
3.7
3.3
3.6
6.3

3.7

$

$

Weighted-
Average
Exercise
Price

Options Exercisable

Number of
Shares
(In thousands)

Weighted-
Average
Exercise
Price

0.85 
1.29 
1.31 
5.56 
64.17 

1.96 

448  $
813 
587 
235 
6 
2,089  $

0.83 
1.29 
1.31 
6.37 
64.17 

1.95 

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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, 2017

Granted
Vested
Canceled

Outstanding at December 31, 2018

Granted
Vested
Canceled

Outstanding at December 31, 2019

Granted
Vested
Canceled

Outstanding at December 31, 2020

Expected to vest at December 31, 2020

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)

3,505  $
3,152 
(1,399)
(906)
4,352  $
2,112 
(1,707)
(494)
4,263  $
1,550 
(2,085)
(140)
3,588  $
3,588  $

2.03 
4.45 
2.75 
2.17 
3.52 
11.50 
3.87 
4.81 
7.19 
55.66
7.26
19.47

27.61 

27.61 

$

$

$

$

$

6,657 

27,156 

125,578 

629,633 

629,633 

1.08

1.08

(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, 2020 is based on the closing price of the last trading day during the period ended December 31, 2020. The Company’s stock fair value used in this computation
was $175.47 per share.

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Performance Stock Units

The following is a summary of PSU activity.

Outstanding at December 31, 2017

Granted
Vested
Canceled

Outstanding at December 31, 2018

Granted
Vested
Canceled

Outstanding at December 31, 2019

Granted
Vested
Canceled

Outstanding at December 31, 2020

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)

— 
1,477  $
— 
(147)
1,330  $
1,052 
(1,063)
(364)
955  $
989 
(1,450)
— 
494  $

4.65 

4.66 
9.48 
4.62 
5.16 
9.83 
31.12 
10.20
— 

51.10 

10,818 

52,144 

86,668 

$

$

0.2

(1)        The  intrinsic  value  of  PSUs  vested  is  based  upon  the  value  of  the  Company’s  stock  when  vested.  The  intrinsic  value  of  PSUs  outstanding  and  expected  to  vest  as  of
December 31, 2020 is based on the closing price of the last trading day during the period ended December 31, 2020. The Company’s stock fair value used in this computation
was $175.47 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

15.    INCOME TAXES

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

United States
Foreign

Income (loss) before income taxes

2020

Years Ended December 31,
2019

2018

4,304  $
347 
12.41  $

1,692  $
315 
5.37  $

397 
439 
0.90 

2020

Years Ended December 31,
2019
(In thousands)

2018

112,727  $
6,683 
119,410  $

85,520  $

4,594 
90,114  $

(14,322)
4,093 
(10,229)

$

$

$

$

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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

Current:

Federal
State
Foreign

Deferred:
Federal
State
Foreign

Income taxes (benefit) provision

2020

Years Ended December 31,
2019
(In thousands)

2018

$

$

—  $

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) $

— 
42 
1,233 
1,275 

(35)
(21)
179 
123 
1,398 

A reconciliation of the income tax (benefit) provision and the amount computed by applying the statutory federal income tax rate of 21% to income (loss) 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)
Warrant mark-to-mark adjustment

Income tax (benefit) provision

2020

Years Ended December 31,
2019
(In thousands)

2018

$

$

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) $

(2,148)
17 
8,198 
313 
(378)
(953)
235 
(5,112)
107 
917 
202 
— 
1,398 

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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, 2020 and 2019 is as follows (in thousands):

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,

2020

2019

$

$

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  $

10,726 
54,369 
3,753 
16,736 
2,720 
— 
1,109 
89,413 
89,413 

(1,368)
(5)
(14,374)
(15,747)
73,666 

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  $113.7  million  and  $87.3  million,  respectively,  as  of

December 31, 2020. The federal and state net operating loss carryforwards, if not utilized, will expire beginning in 2036 and 2029, respectively.

The Company has approximately $18.2 million of federal research credit and $12.6 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, 2020, which indicated no such change has
occurred through December 31, 2020.

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 2020 of $1.8 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

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

2020

Years Ended December 31,
2019

2018

$

$

6,589  $
— 
2,006 
(174)
8,421  $

6,325  $
(370)
771 
(137)
6,589  $

6,106 
— 
329 
(110)
6,325 

The Company includes interest and penalties related to unrecognized tax benefits within the benefit from (provision for) income taxes. As of years ended December 31, 2020,
2019 and 2018, 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 2020, 2019 and 2018 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 2020 and by California state authorities

for the years 2006 through 2020 due to use and carryovers of net operating losses and credits.

16.    CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS

The Company is potentially subject to financial instrument concentration of credit risk through its cash and cash equivalents and accounts receivable. The Company places its

cash and cash equivalents 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,  2020,  amounts  due  from  one  customer
represented approximately 36% of the total accounts receivable balance. As of December 31, 2019, amounts due from three customers represented 34%, 14% and 11% of the total
accounts receivable balance.

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. In

2018, one customer accounted for approximately 19% of total net revenues.

17.    NET INCOME (LOSS) PER SHARE

Basic  net  income  (loss)  per  share  is  computed  by  dividing  net  income  (loss)  by  the  weighted  average  number  of  shares  of  common  stock  outstanding  during  the  period.
Diluted net income (loss) 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, the Notes due 2024, Warrants issued in conjunction
with the Notes due 2024, and from May 20, 2020 to the end of the reporting period, the Notes due 2025 and Warrants issued in conjunction with the Notes due 2025. See Note 11.
“Debt” 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,
Notes due 2024, warrants issued in conjunction with the Notes due 2024, Notes due 2025, warrants issued in conjunction with the Notes due 2025 and shares to be purchased
under the ESPP, and by application of the if-converted method for the Notes due 2023. To the extent these potential common shares are antidilutive, they are excluded from the
calculation of diluted net income (loss) 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 (loss) per share for the periods presented.

Numerator:
Net income (loss)

Notes due 2023 interest and financing costs, net

Adjusted net income (loss)

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
Warrants (issued in conjunction with Notes due 2024)
Notes due 2024
Notes due 2023

Weighted average common shares outstanding for diluted calculation

Basic and diluted net income (loss) per share
Net income (loss) per share, basic

Net income (loss) per share, diluted

Years Ended December 31,

2020

2019

2018

(In thousands, except per share data)

133,995  $
177 
134,172  $

161,148  $
1,088 
162,236  $

(11,627)
— 
(11,627)

125,561 

116,713 

99,619 

125,561 

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

116,713 

8,964 
— 
451 
5,516 
131,644 

1.07  $

0.95  $

1.38  $

1.23  $

99,619 

— 
— 
— 
— 
99,619 

(0.12)

(0.12)

$

$

$

$

The  following  outstanding  shares  of  common  stock  equivalents  were  excluded  from  the  calculation  of  the  diluted  net  income  (loss)  per  share  attributable  to  common

stockholders because their effect would have been antidilutive.

Employee stock options
RSUs and PSUs
Warrants (issued in conjunction with Notes due 2024)
Warrants (issued in conjunction with Notes due 2025)
Notes due 2025
Notes due 2023

Total

2020

Years Ended December 31,
2019
(In thousands)

2018

7 
36 
— 
1,254 
197 
— 
1,494 

27 
158 
300 
— 
— 
— 
485 

7,710 
5,273 
— 
— 

11,701 
24,684 

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 warrants issued in conjunction with the Notes due 2024. Certain common stock issuable under stock options, RSUs, PSUs, Notes due
2025 and warrants issued in conjunction with the Notes due 2025 have been omitted from the diluted net income per share calculation because including such shares would have
been antidilutive.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

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 2024 and Notes due 2025 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 2024 and Notes due 2025 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 $20.50 per share and $81.54 per share for the Notes due 2024 and Notes due 2025, respectively.

18.    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  photovoltaic  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 (in thousands):

Long-Lived Assets

United States
China
Mexico
India
New Zealand
Other

Total

19.    RELATED PARTY

2020

December 31,

(In thousands)

2019

$

$

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

16,754 
4,635 
3,510 
1,315 
2,638 
84 
28,936 

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, 2020 and December 31, 2019, $5.0 million aggregate principal amount of the Notes due 2023 were
outstanding. See Note 11. “Debt” for additional information related to this purchase.

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Table of Contents

The Company sells products to SunPower under the August 2018 MSA. As of December 31, 2019, SunPower via its wholly owned subsidiary, held 6.5 million shares of the
Company’s common stock. Revenue recognized under the MSA for the year ended December 31, 2019 was $70.9 million, net of amortization of the customer relationship intangible
asset (see Note 6. “Goodwill and Intangible Assets”). As of December 31, 2019, the Company had accounts receivable of $15.9 million from SunPower. As of December 31, 2019,
the Company received $5.2 million as a safe harbor prepayment from SunPower in the fourth quarter of 2019 for product delivered in the first quarter of 2020.

As  of  December  31,  2020,  SunPower  via  its  wholly  owned  subsidiary  held  3.5  million  shares  of  the  Company’s  common  stock  which  is  less  than  5%  of  the  Company’s

common stock outstanding and is no longer a considered a related party.

20.    ACQUISITION

On August 9, 2018, the Company completed its acquisition of SunPower’s microinverter business pursuant to an APA by which the Company acquired certain assets and
liabilities  of  SunPower  relating  to  the  research  and  development  and  manufacturing  of  microinverters.  The  acquisition  was  accounted  for  as  a  business  combination  and,
accordingly, the total purchase price was allocated to the preliminary net tangible and intangible assets and liabilities based on their preliminary fair values on the acquisition date.

In conjunction with the APA, the Company entered into an MSA with SunPower. Pursuant to the terms of the MSA, the Company becomes the exclusive supplier of MLPEs for
SunPower’s residential business in the U.S. for a period of five years. The resulting customer relationship intangible is accounted for as a distinct transaction from the acquired
business.

The acquisition date fair value of the consideration transferred was approximately $57.3 million, which consisted of the following (in thousands):

Cash consideration
Common stock issued

Total

$

$

25,000 
32,319 
57,319 

The fair value of the Company’s 7.5 million shares of common stock issued, valued at $32.3 million, was determined based on the closing market price of the Company’s
common stock on the acquisition date, less a discount of 14% to 30% (depending on the year) for lack of marketability as the shares issued are subject to a restriction that limits
their trade or transfer with a lock-up period of six months and restrictions on the number of shares that can be transferred by SunPower in each six-month period following the lock-
up period.

The following table summarizes the preliminary estimated fair values of the assets acquired and liabilities assumed at the acquisition date (in thousands):

Intangible assets
Goodwill

Net assets acquired

$

$

36,200 
21,119 
57,319 

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. The
$21.1 million of goodwill recognized is attributable primarily to the benefits the Company expects to derive from enhanced scale and efficiency to better serve its markets. Goodwill
is expected to be deductible over the next 15 years for income tax purposes.

The fair values assigned to tangible and identifiable intangible assets acquired are based on management’s estimates and assumptions. The fair values of assets acquired

are preliminary and may be subject to change within the measurement period as the fair value assessments are finalized.

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ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

The  following  table  shows  the  fair  value  of  the  separately  identifiable  intangible  assets  at  the  time  of  acquisition  and  the  period  over  which  each  intangible  asset  will  be

amortized:

Developed technology
Customer relationship

Total identifiable intangible assets

Preliminary Fair Value
(In thousands)

$

$

13,100 
23,100 
36,200 

Useful Life
(Years)
6
9

The developed technology acquired is embedded in the microinverters that SunPower sells to its customers. The Company already has developed microinverter technology
and the Company will supply its microinverters to SunPower through the term of the MSA. The Company does not intend to actively use the developed technology acquired from
SunPower  but  does  plan  to  hold  the  developed  technology  to  prevent  others  from  using  it.  Therefore,  the  Company  will  account  for  the  developed  technology  as  a  defensive
intangible asset. The Company expects to realize the benefits of the developed technology over the period of time in which the Company will supply microinverters to SunPower.
The  Company  does  expect  changes  in  microinverter  technology  during  the  life  of  the  customer  relationship  with  SunPower  and  expects  to  benefit  from  preventing  competitors’
access to the technology over a period of six years, therefore, the Company will amortize the value of the developed technology intangible asset over a period of six years.

The MSA was negotiated together with the APA and provides the Company with the exclusive right to supply SunPower with MLPEs for a period of five years, with options for
renewals. The exclusivity arrangement extends throughout the term of the MSA, which comprises all of the expected cash flows from the customer relationship intangible asset, and
was a condition to, and was an essential part of the acquisition of the microinverter business by the Company. As the fair value ascribed to the customer relationship intangible
asset represents payments to a customer, the Company will amortize the value of the customer relationship intangible asset as a reduction to revenue using a pattern of economic
benefit method over a useful life of nine years.

The table below shows estimated fair values of the assets acquired funded by cash and issuance of common stock at the acquisition date:

Developed technology and goodwill
Customer relationship

Total consideration

Cash Purchase Price

Issuance of Common
Stock

Total Consideration

% of Total Consideration

$

$

15,000  $
10,000 
25,000  $

(In thousands)

19,219  $
13,100 
32,319  $

34,219 
23,100 
57,319 

60 %
40 %
100 %

The Company allocated $10.0 million of the $25.0 million paid of the cash purchase price to cash flows from operating activities and the remaining $15.0 million to cash used
in investing activities in the consolidated statements of cash flows for the year ended December 31, 2018. The allocation was based on the valuation of the customer relationship
relative  to  the  overall  consideration.  In  addition,  the  Company  disclosed  $19.2  million  from  issuance  of  common  stock  and  $15.0  million  of  cash  purchase  price  paid  for  the
developed technology and goodwill as investing activities in the consolidated statements of cash flows for the year ended December 31, 2018.

During 2018, total acquisition-related costs were approximately $0.8 million, which were included in general and administrative expenses.

The  Company  determined  it  is  impractical  to  include  such  pro  forma  information  given  the  difficulty  in  obtaining  the  historical  financial  information  for  the  SunPower
microinverter business as the business was part of SunPower and did not have discrete financial information prior to the acquisition. Inclusion of such information would require the
Company to make estimates and assumptions regarding the acquired business historical financial results that the Company believes may ultimately prove inaccurate.

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21.    SUBSEQUENT EVENTS

ENPHASE ENERGY, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In  January  2021,  the  Company  invested  $25.0  million  in  cash  in  a  privately-held  company.  The  investment  does  not  require  consolidation  into  the  Company’s  financial

statements because the privately-held company is not a variable interest entity and the Company does not hold a majority voting interest.

On January 25, 2021, the Company completed the acquisition of 100% of the voting interest of Sofdesk Inc. (“Sofdesk”), a privately-held company. Sofdesk provides design
software  for  residential  solar  installers  and  roofing  companies.  As  part  of  the  consideration,  the  Company  paid  approximately  $32.0  million  in  cash  on  January  25,  2021.  The
Company is currently in the process of completing the preliminary purchase price allocation, which will be included in the Company’s Quarterly Report on Form 10-Q for the quarter
ended March 31, 2021.

On  February  8,  2021,  the  Company  announced  that  it  has  agreed  to  acquire  the  solar  design  services  business  of  DIN  Engineering  Services  LLP  (“DIN”).  DIN  provides

proposal drawings and permit plan sets for residential solar installers in North America. The acquisition is subject to customary closing conditions and regulatory approvals.

Enphase Energy, Inc. | 2020 Form 10-K | 127

Table of Contents

SELECTED UNAUDITED QUARTERLY FINANCIAL INFORMATION

The following tables show a summary of the Company’s quarterly financial information for each of the four quarters of 2020 and 2019 (in thousands, except per share data):

March 31, 2020

June 30, 2020

September 30, 2020

December 31, 2020

Three Months Ended

Net revenues
Cost of revenues
Gross profit
Operating expenses:

Research and development
Sales and marketing
General and administrative

Total operating expenses

Income from operations
Other income (expense), net

Interest Income
Interest expense
Other income (expense)
Change in fair value of derivatives

Total other income (expense), net

Income (loss) before income taxes
Income tax benefit (provision)

Net income (loss)

Net income (loss) per share, basic

Net income (loss) per share, diluted

$

$

$

$

205,545  $
124,870 
80,675 

11,876 
11,772 
12,315 
35,963 
44,712 

1,091 
(3,155)
(924)
15,344 
12,356 
57,068 
11,868 
68,936  $

0.56  $

0.50  $

125,538  $

178,503  $

77,151 
48,387 

13,192 
12,371 
11,970 
37,533 
10,854 

282 
(5,952)
653 
(59,692)
(64,709)
(53,855)
6,561 
(47,294) $

(0.38) $

(0.38) $

83,522 
94,981 

15,052 
14,645 
13,525 
43,222 
51,759 

110 
(5,993)
(1,031)
— 
(6,914)
44,845 
(5,483)
39,362  $

0.31  $

0.28  $

264,839 
142,901 
121,938 

15,801 
14,139 
12,884 
42,824 
79,114 

673 
(5,901)
(2,534)
— 
(7,762)
71,352 
1,639 
72,991 

0.57 

0.50 

Enphase Energy, Inc. | 2020 Form 10-K | 128

Table of Contents

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 expense, net
Interest income
Interest expense
Other income (expense), net
Total other expense, net

Income before income taxes
Income tax benefit (provision)

Net income

Net income per share, basic

Net income per diluted share

March 31, 2019

June 30, 2019

September 30, 2019

December 31, 2019

Three Months Ended

$

$

$

$

100,150  $
66,811 
33,339 

8,524 
7,433 
9,880 
368 
26,205 
7,134 

211 
(3,751)
(481)
(4,021)
3,113 
(348)
2,765  $

0.03  $

0.02  $

134,094  $

88,775 
45,319 

9,604 
9,054 
8,583 
631 
27,872 
17,447 

593 
(1,351)
(5,480)
(6,238)
11,209 
(591)
10,618  $

0.09  $

0.08  $

Enphase Energy, Inc. | 2020 Form 10-K | 129

180,057  $
115,351 
64,706 

11,085 
9,551 
9,895 
469 
31,000 
33,706 

894 
(2,286)
(943)
(2,335)
31,371 
(272)
31,099  $

0.25  $

0.23  $

210,032 
132,151 
77,881 

11,168 
10,690 
10,450 
1,131 
33,439 
44,442 

815 
(2,303)
1,467 
(21)
44,421 
72,245 
116,666 

0.95 

0.88 

Table of Contents

Item 9.    Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A.    Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We carried out an evaluation required by the Exchange Act, under the supervision and with the participation of our principal executive officer and principal financial officer, of
the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rule 13a-15(e) of the Exchange Act, as of the end of the period covered by
this report. Based on this evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective to provide
reasonable assurance that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported
within  the  time  periods  specified  in  the  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 2020, 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,  2020  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.

Enphase Energy, Inc. | 2020 Form 10-K | 130

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 2021 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, 2021.

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 Accounting 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. | 2020 Form 10-K | 131

Table of Contents

Item 15.    Exhibits, 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

2.1

3.1

3.2

3.3

3.4

3.5

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

+
10.1

+
10.2

+
10.3

+
10.4

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

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

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

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

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

Amended and Restated Bylaws of Enphase Energy, Inc.

Specimen Common Stock Certificate of Enphase Energy, Inc.

Indenture, dated August 17, 2018, between Enphase Energy, Inc. and U.S. Bank
National Association.

Form of 4.00% Convertible Senior Note due 2023 (included in Exhibit 4.2).

Indenture, dated June 5, 2019, between Enphase Energy, Inc. and U.S. Bank
National Association.

Form of 1.00% Convertible Senior Note due 2024 (included in Exhibit 4.4).

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).

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.

2006 Equity Incentive Plan, as amended, and related documents.

Form

8-K

8-K

10-Q

10-Q

8-K

S-1/A

S-1/A

8-K

8-K

8-K

8-K

8-K

8-K

S-1/A

S-8

SEC File No.

Exhibit

Filing Date

Filed Herewith

Incorporation by Reference

001-35480

001-35480

001-35480

001-35480

001-35480

333-174925

333-174925

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

333-174925

333-181382

2.1

3.1

3.1

2.1

3.1

3.5

4.1

4.1

4.1

4.1

4.1

4.1

4.2

10.1

99.1

6/12/2018

4/6/2012

8/9/2017

8/6/2018

5/27/2020

3/12/2012

3/12/2012

8/17/2018

8/17/2018

6/5/2019

6/5/2019

3/9/2020

3/9/2020

8/24/2011

5/14/2012

X

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

Enphase Energy, Inc. | 2020 Form 10-K | 132

    
    
    
Table of Contents

Exhibit Number

Exhibit Description

10.5

10.6

10.7

10.8

10.9

10.10

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.

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

+
10.15

10.16

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

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

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

+
10.17

Performance Bonus Program Summary.

Form

S-1

10-Q

S-1

10-Q

S-1

S-1

8-K

10-Q

8-K

10-Q

8-K

8-K

SEC File No.

Exhibit

Filing Date

Filed Herewith

Incorporation by Reference

333-174925

10.17

6/15/2011

001-35480

10.4

11/2/2016

333-174925

10.18

6/15/2011

001-35480

333-174925

10.1

10.2

5/6/2015

6/15/2011

333-174925

10.21

6/15/2011

001-35480

001-35480

001-35480

001-35480

001-35480

001-35480

10.1

10.5

10.1

10.1

10.2

10.1

12/5/2017

5/8/2013

1/10/2017

8/6/2018

8/17/2018

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.

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.

8-K/A

10-K

001-35480

99.1

10/23/2018

001-34166

10.74

2/14/2019

10.23

Consent and Waiver to Stockholders Agreement

#
10.24

10.25

10.26

Salcomp Manufacturing Services Agreement by and between Enphase Energy,
Inc. and Salcomp Manufacturing India Private Ltd., dated October 1, 2019.

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

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.

Enphase Energy, Inc. | 2020 Form 10-K | 133

X

X

X

X

X

X

Table of Contents

Exhibit Number

Exhibit Description

Form

SEC File No.

Exhibit

Filing Date

Filed Herewith

Incorporation by Reference

8-K

8-K

8-K

8-K

8-K

001-35480

001-35480

001-35480

001-35480

001-35480

10.2

10.3

10.2

10.3

10.3

6/5/2019

6/5/2019

3/9/2020

3/9/2020

3/9/2020

10-Q

10-Q

001-35480

001-35480

10.4

10.1

7/30/2019

10/27/2020

10.27

Bayside Parkway Lease by and between Enphase Energy, Inc. and Dollinger
Bayside Associates, amendment dated May 9, 2020.

10.28

Form of Convertible Note Hedge Transaction Confirmation (2019).

10.29

Form of Warrant Confirmation (2019).

10.30

Form of Convertible Note Hedge Transaction Confirmation (2020).

10.31

Form of Warrant Confirmation (2020).

10.32

#
10.33

10.34

10.35

10.36

10.37

+
10.38

+
10.39

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

Form of Exchange agreement by and between Enphase Energy, Inc. and Linden
Advisors LP dated December 14, 2020

Partial unwind agreement with respect to the Base Call Option Confirmation,
dated December 14, 2020 between Enphase Energy, Inc. and Barclays Bank
PLC.

Partial unwind agreement with respect to the Base Call Option Confirmation,
dated December 14, 2020 between Enphase Energy, Inc. and Credit Suisse
Capital LLC.

Partial unwind agreement with respect to the Base Warrants Confirmation, dated
December 14, 2020 between Enphase Energy, Inc. and Barclays Bank PLC.

Partial unwind agreement with respect to the Base Warrants Confirmation, dated
December 14, 2020 between Enphase Energy, Inc. and Credit Suisse Capital
LLC.

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

Offer Letter, by and between Enphase Energy, Inc. and Jamie Haenggi, dated
August 21, 2020.

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.

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

Enphase Energy, Inc. | 2020 Form 10-K | 134

Table of Contents

Exhibit Number

Exhibit Description

Form

SEC File No.

Exhibit

Filing Date

Filed Herewith

Incorporation by Reference

104

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

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. | 2020 Form 10-K | 135

Table of Contents

Item 16.    Form 10-K Summary

Not Applicable

Enphase Energy, Inc. | 2020 Form 10-K | 136

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 12, 2021.

SIGNATURES

Enphase Energy, Inc.

By:

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

Enphase Energy, Inc. | 2020 Form 10-K | 137

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

/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

President and Chief Executive Officer
(Principal Executive Officer)

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 12, 2021

February 12, 2021

February 12, 2021

February 12, 2021

February 12, 2021

February 12, 2021

February 12, 2021

February 12, 2021

February 12, 2021

Enphase Energy, Inc. | 2020 Form 10-K | 138

DESCRIPTION OF CAPITAL STOCK

Exhibit 4.8

General

Enphase Energy, Inc., or the Company, is authorized to issue up to 200,000,000 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.  However,  several  lawsuits  involving  other
companies have been brought challenging the validity of choice of forum provisions in certificates of incorporation, and it is possible that a court could rule that such provision is
inapplicable or unenforceable.

Summary of Board of Director Compensation (Non-Employee Directors)

Enphase Energy, Inc.
Non-Employee Director Compensation Policy
Effective: November 1, 2020

Each member of the Board of Directors (the “Board”) who is not also serving as an employee of Enphase Energy, Inc. (“Enphase”) or any of its subsidiaries

(each such member, a “Director”) will receive the following compensation for his or her Board service following the effective date of this policy:

Annual Cash Compensation

The annual cash compensation amount set forth below is payable in equal quarterly installments, payable in arrears on the last day of each fiscal quarter in
which the service occurred. If a Director joins the Board or a committee at a time other than effective as of the first day of a fiscal quarter, each annual retainer set
forth  below  will  be  pro-rated  based  on  days  served  in  the  applicable  fiscal  year,  with  the  pro-rated  amount  paid  for  the  first  fiscal  quarter  in  which  the  Director
provides the service, and regular full quarterly payments thereafter. All annual cash fees are vested upon payment.

1.

Annual Board Service Retainer:

a.

All Directors: $50,000

2.

Annual Committee Chair Retainer:

a.

b.

c.

Chairman of the Audit Committee: $25,000

Chairman of the Compensation Committee: $20,000

Chairman of the Nominating & Corporate Governance Committee: $10,000

3.

Annual Committee Member (non-Chair) Retainer:

a.

b.

c.

d.

Audit Committee: $15,000

Compensation Committee: $10,000

Nominating & Corporate Governance Committee: $5,000

Strategic Committee: $10,000

4.

Annual Lease Independent Director Retainer: $20,000

Equity Compensation

The  equity  compensation  set  forth  below  will  be  granted  under  the  Enphase  2011  Equity  Incentive  Plan  (the  “Plan”)  or  (if  applicable)  any  successor  plan

approved by Enphase’s stockholders.

1.

Annual Grant: On the date of each Enphase annual stockholder meeting, each Director will be automatically, and without further action by the Board,
granted a restricted stock unit (RSU) award for a number of shares with a target fair value equal to $250,000, rounded down for any partial share. Such RSU
award will vest in four (4) quarterly installments on the 15  day of August, November, February, and May following the grant date, subject to the Director’s
Continuous Service (as defined in the Plan).

th

2.

Annual  Grant  to  Lead  Independent  Director:  On  the  date  of  each  Enphase  annual  stockholder  meeting,  the  Lead  Independent  Director  will  be
automatically, and without further action by the Board, granted a restricted stock unit (RSU) award for a number of shares with a target fair value equal to
$20,000, rounded down for any partial share. Such RSU award will vest in four (4) quarterly installments on the 15  day of August, November, February, and
May following the grant date, subject to the Director’s Continuous Service (as defined in the Plan).

th

Target fair value for the above RSU awards will be calculated using the closing stock price on the Nasdaq Global Market (or any successor exchange) on the

grant date.

[*] = Certain confidential information contained in this document, marked by brackets, has been omitted because it is both not
material and would likely cause competitive harm to the Company if publicly disclosed.

Amendment No. 2
to
Master Supply Agreement

This Amendment No. 2 to Master Supply Agreement (the “Amendment”), having an effective date of October 15, 2020 (“Amendment Effective Date”) to
the  Master  Supply  Agreement  dated  June  12,  2018  (as  amended,  the  “MSA”)  is  entered  into  by  and  between  SunPower  Corporation,  a  Delaware
corporation with offices at 51 Rio Robles, San Jose, California 95134 (“SunPower”), and Enphase Energy, Inc., a Delaware corporation with offices at
47281  Bayside  Parkway,  Fremont,  California  94538  (formerly  at  1420  N.  McDowell  Blvd.,  Petaluma,  CA  94954)  (“Enphase”).  Capitalized  terms  not
otherwise defined herein shall have the meaning ascribed to them in the MSA.

A.    The Initial Term of the MSA ends on December 31, 2023 and the Parties desire to extend the Initial Term of the MSA as set forth herein.

Recitals

B.    The Parties also wish to amend the terms of the MSA as set forth herein.

Agreement

NOW, THEREFORE, for adequate consideration, the receipt of which is hereby acknowledged, the Parties agree to the following:

1.    Amendment to Section 6.1 of the MSA. Section 6.1 of the MSA is hereby amended by replacing “December 31, 2023” with “March 31, 2024”.

2.       Amendment  to  Exhibit  B,  Base  Price.  Effective  January  1,  2024,  the  Base  Price  set  forth  in  Exhibit  B  for  single-phase  grid-tied  MLPE  Products,

including standard wiring Cable Products for portrait mode installations, shall be [*].

3.    Limitation. Except as otherwise specifically modified by this Amendment, all terms and provisions of the MSA, as modified hereby, shall remain in full
force and effect. Nothing contained in this Amendment shall in any way impair the validity or enforceability of the MSA, as modified hereby, or alter, waive, annul,
vary, affect, or impair any provisions, conditions, or covenants contained therein or any rights, powers, or remedies granted therein, except as otherwise specifically
provided in this Amendment.

4.    Counterparts. This Amendment may be signed originally or by facsimile or other means of electronic transmission in any number of counterparts, and
by  different  parties  hereto  in  separate  counterparts,  with  the  same  effect  as  if  the  signatures  to  each  such  counterpart  were  upon  a  single  instrument.  All
counterparts shall be deemed an original of this Amendment.

[signature page follows]

5.        Integration.  This  Amendment  and  any  documents  executed  in  connection  herewith  or  pursuant  hereto  contain  the  entire  agreement  between  the
parties with respect to the subject matter hereof and supersede all prior agreements, understandings, offers and negotiations, oral or written, with respect thereto
and no extrinsic evidence whatsoever may be introduced in any judicial or arbitration proceeding, if any, involving this Amendment.

6.    Governing Law. This Amendment shall be governed by and construed in accordance with the laws of the State of California, without regard to any

conflicts of laws principles.

[signature page follows]

IN WITNESS WHEREOF, the parties have duly authorized and caused this Amendment to be executed as of the Date written below.

ENPHASE ENERGY, INC.

SUNPOWER CORPORATION

By: /S/ Eric Branderiz     

Name: Eric Branderiz             

Title: Chief Financial Officer                                            
Date:    October 28, 2020            

By: /S/ Eric Branderiz

Name: Eric Branderiz

Title: Chief Financial Officer

Date: October 28, 2020

By: /S/ Manavendra Sial                

Name: Manvendra Sial                

Title: 
Vice 
Executive 
Officer                                        
Date:    October 27, 2020            

By: /S/ Manavendra Sial

Name: Manavendra Sial

President 

and 

Chief 

Financial

Title: Executive Vice President and Chief Financial Officer

Date: October 27, 2020

[Signature Page to Amendment No. 2 to Master Supply Agreement]

[*] = Certain confidential information contained in this document, marked by brackets, has been omitted because it is both not
material and would likely cause competitive harm to the Company if publicly disclosed.

Amendment No. 3
TO
Master Supply Agreement

This Amendment No. 3 to Master Supply Agreement (the “Amendment”), having an effective date of October 1, 2019 (“Amendment Effective
Date”)  to  the  Master  Supply  Agreement  dated  June  12,  2018  (as  amended,  the  “MSA”)  is  entered  into  by  and  between  SunPower
Corporation, a Delaware corporation with offices at 51 Rio Robles, San Jose, California 95134 (“SunPower”), and Enphase Energy, Inc., a
Delaware corporation with offices at 47281 Bayside Parkway, Fremont, California 94538 (formerly at 1420 N. McDowell Blvd., Petaluma, CA
94954) (“Enphase”). Capitalized terms not otherwise defined herein shall have the meaning ascribed to them in the MSA.

WHEREAS, SunPower desires to purchase certain other Enphase microinverters for purposes of using such microinverters as field replacement units
(“FRU”s)  in  place  of  existing  inverters  in  SunPower’s  Gen  1.x,  Gen  2.x  and  Gen  3.x  AC  Module  based  solar  systems  (collectively,  the  “Legacy
Systems”, and the inverter replacement program shall be referred to as, the “FRU Program”);

WHEREAS, Enphase wishes to sell such other products to SunPower for the FRU Program;

WHEREAS, the  Parties  have  entered  into  the  MSA  for  purposes  of  specifying  the  terms  and  conditions  under  which  SunPower  will  purchase  and
Enphase will supply certain Enphase products to be used by SunPower;

WHEREAS,  SunPower  and  Enphase  now  desire  to  further  supplement  and  add  additional  Products  (as  defined  below)  to  the  scope  of  the  MSA,
including those to be used as part of the FRU Program;

AND WHEREAS; For purposes of this Amendment, “Covered Products” are defined as Enphase Products sold to SunPower hereunder as FRUs
required to support Legacy Systems as further outlined in the table below:

SunPower MI

W-ac

V-dc range

Gen 3.x

Gen 2.x

Gen 1.x

320

238

225

20-64

25-50

25-50

Enphase MI
(each a “FRU Microinverter”)
IQ7XS-96-2-US

IQ7PD-84-2-US

IQ7PD-84-2-US

Gateway

Sunpower PVS6

Enphase Envoy or AC Combiner

Enphase Envoy or AC Combiner

NOW, THEREFORE, for adequate consideration, the receipt of which is hereby acknowledged, the Parties agree to the following:

1.    Covered Products. SunPower shall purchase and Enphase shall supply Covered Products, including those necessary for SunPower to
mount the FRU Microinverter to a SunPower Legacy System as a replacement for an existing inverter that is part of the Legacy System.
The applicable data sheet for the FRU Microinverters are attached hereto as Attachment A.

2.    Pricing. Enphase shall supply and SunPower shall purchase Covered Products at the prices listed in Attachment B to this Amendment,
attached hereto. As used in this Amendment, Covered Products does not include any other Products supplied under the terms of the MSA.
All references to a quarter, or “Q”, in this Amendment means the three month calendar period, starting with Q1 being January 1  through
March 31  of the respective year. For the avoidance of doubt, this Attachment B shall apply solely to the FRUs made available under this
Amendment and, except as expressly set forth herein, shall in no way modify the Exhibit B agreed upon in Amendment No. 2 to the MSA.

st

st

3.    Forecasts. Section 2.1 of the MSA (Forecasts) shall be applicable to the Covered Products.

4.        Volume.  Enphase  shall  sell  and  SunPower  shall  purchase  the  volume  of  FRU  Microinverters  set  forth  for  each  period  specified  in
Attachment B. All Covered Products supplied to SunPower under this Amendment shall be included for purposes of calculating the Volume-
Based Price Adjustment under the MSA.

5.    FRU Program Requirements. The Parties agree that microinverter reliability is an important aspect of the FRU Program and it is critical to
ensure that each microinverter can be remotely monitored and updated in order to lead to that desired reliability. Accordingly, the Parties
agree to the following:

a.        Complete  Legacy  System  Replacement.  If  SunPower  replaces  any  one  inverter  on  a  Legacy  System  with  a  FRU  Microinverter,
SunPower shall replace each and every existing inverter on such Legacy System with an Enphase FRU Microinverter (such action
referred  to  as  a  “Full  Site  Replacement”).  Upon  future  review  of  technical  feasibility  and  mutual  agreement  of  both  Parties,
SunPower may elect to perform partial replacement at a site at a later date.

b.    Required Software Updates. For systems connected to Enphase’s Envoy systems, Enphase will follow the Sunpower PCN process
and  notify  SunPower  of  any  updates  prior  to  performing  upgrades.  For  systems  connected  to  PVS6,  software  updates  shall  be
carried out in accordance with the MSA.

c.    Gateway Product. For each replacement with IQ7XS-96-2-US, SunPower shall ensure that each IQ7XS-96-2-US unit is connected
to  a  SunPower  PVS6  or  compatible  gateway  product,  with  the  ability  to  remotely  commission,  monitor,  control  and  provide  the
firmware  upgrade  capability  on  each  FRU  Microinverter.  For  each  replacement  with  IQ7PD-84-2-US  SunPower  shall  ensure  that
each IQ7PD-84-2-US unit is connected to an Enphase Envoy with the ability to remotely commission, monitor, control and provide
the  firmware  upgrade  capability  on  each  FRU  Microinverter.  Enphase  and  Sunpower  shall  cooperate  to  develop  relevant  System
APIs to provide performance data to SunPower.

d.    Data Sharing. SunPower shall gather the performance data described in Attachment D-1 in relation to a SunPower PVS6 product
(the  “Data”)  and  make  such  Data  available  to  Enphase  for  the  previous  [*]  (at  a  minimum),  on  a  rolling  basis,  refreshed  no  less
frequently than weekly (provided that SunPower shall make available one month of Data promptly following the date this Amendment
is signed and shall provide each subsequent month’s Data until the aforementioned three (3) months of Data is available), including,
without  limitation,  the  data  points  set  forth  in  Attachment  D-1,  attached  hereto  and  incorporated  by  reference.  The  Data  is  made
available “as-is” and SunPower makes no representation or warranty whether express or implied, including accuracy, completeness,
or  any  implied  warranties  of  title,  non-infringement,  quiet  enjoyment,  integration,  merchantability  or  fitness  for  a  particular  purpose
with respect to such Data. Following the first month in which three (3) month’s Data has been made available, Enphase shall make a
payment of [*] to SunPower for purposes of maintaining the database and equipment necessary to provide Data to Enphase under
this  Section.  For  the  avoidance  of  doubt,  Enphase  will  have  no  obligation  to  pay  the  [*]  that  SunPower  fails  to  provide  at  least  [*]
worth of then-current data. Each party shall comply with the Data Protection Addendum (“DPA”) attached hereto as Attachment D-2.
For the avoidance of doubt, the parties acknowledge that Enphase’s access to the Data is not part of the consideration exchanged by
the parties in connection with the MSA. The Parties agree to discuss in good faith the feasibility of a data-porting integration enabling
the  provision  of  the  Data  to  Enphase,  after  which  SunPower  will  no  longer  be  required  to  provide,  and  Enphase  will  no  longer  be
required to pay for, the above-referenced database, and the terms of any such arrangement shall subject to mutual agreement by the
parties in a separate definitive agreement.

e.    Racking system. SunPower shall (i) use the Invisimount racking or other UL 2703 compliant racking system for Legacy Systems
requiring  this  certification  at  the  time  of  install  and  (ii)  for  systems  installed  prior  to  this  requirement,  SunPower  will  use  an  UL
approved racking system. For racking

components  that  affix  directly  to  the  FRU  Microinverter,  SunPower  will  use  UL2703  listed  components.  In  case  a  suitable  racking
system  is  not  available,  SunPower  may  use  approved  frame  mounting  solutions  for  replacements.  Notwithstanding  the  foregoing,
SunPower  will  not  use  any  racking  system  or  frame  mounting  solution  unless  it  has  been  approved  in  writing  by  Enphase
(“Approved  Racking”).  All  Approved  Racking  must  ensure  sufficient  protection  of  the  FRU  Microinverter  from  the  elements  and
ample clearance from the roof for proper thermal dissipation. The Approved Racking shall be specified in the Installation Manual and
communicated to all SunPower FRU Program installation teams. A copy of the Manual is attached hereto as Attachment C.

f.    Installation Manual (the “Manual”) Review. For IQ7XS-96-2-US, the Parties agree that they will jointly review the Manual from time to
time, including for purposes of improving or clarifying instructions and to incorporate best-known methods. For IQ7PD-84-2-US, the
standard  Enphase  Installation  Manual  (Feb  2020,  141-00043-04)  will  be  used.  The  manuals  described  in  this  Section  (f)  are
collectively referred to as the “Manual”. Enphase will follow PCN process to notify SunPower any changes on the Manual.

g.    Exclusions under the Limited Warranty. In addition to the terms set forth in Section 4.1 of the MSA, “Limited Warranty”, the following

terms are added: a non-conforming FRU Microinverter shall not be eligible for the Limited Warranty if any of the following occur:

(i)    Connectors other than the MC4 DC connectors set forth in the Manual are used on IQ7XS FRU units;
(ii)        Connectors  other  than  MC4  DC  connectors  set  forth  in  the  Manual  are  used  on  the  IQ7PD  FRU  units  unless  the  other
connectors are identified,  reviewed by  both  parties,  such  other  connectors successfully complete UL compatibility testing or
UL approval, and are approved in writing by both parties, in advance;

(iii)    Full Site Replacement is not completed; or partial site replacement is completed without both Parties’ agreement;
(iv)    It has not been connected to a SunPower PVS6, Enphase Envoy, or compatible gateway product;
(v)    Its firmware has not been updated by SunPower as requested by Enphase per MSA;
(vi)    It has been installed on a racking system other than an Approved Racking system;
(vii)    The failure is caused by a JBOX DC connector attached to SunPower PV module; and / or
(viii)    It has not been installed in accordance to the Manual and failure is caused by improper installation.

6.    Payment terms. Payment for Covered Products shall be made in accordance with the MSA, except as set forth in Attachment B attached

hereto.

7.        Shipping  &  Delivery.  Shipping  and  delivery  of  Covered  Products  shall  be  made  in  accordance  with  the  MSA,  except  as  set  forth  in

Attachment B attached hereto.

8.        Full  Force  and  Effect.  Except  as  expressly  set  forth  herein,  the  terms  of  the  MSA  remain  in  full  force  and  effect  with  respect  to  the

Covered Products.

9.        Governing  Law. This  Amendment  shall  be  governed  by  and  construed  in  accordance  with  the  laws  of  the  State  of  California,  without

regard to any conflicts of laws principles.

[signature page follows]

IN WITNESS WHEREOF, the parties have duly authorized and caused this Amendment to be executed as of the Date written below. This Amendment
may be signed in counterparts, with the same effect as if each were upon a single instrument.

ENPHASE ENERGY, INC.

SUNPOWER CORPORATION

By: /S/ Eric Branderiz     

Name: Eric Branderiz             

Title: Chief Financial Officer                                            
Date:    October 28, 2020            

By: /S/ Eric Branderiz

Name: Eric Branderiz

Title: Chief Financial Officer

Date: October 28, 2020

Attachments:

Attachment A – Enphase IQ™ 7 XS Data Sheet
Attachment B – Pricing, Volumes, Shipping and Payment
Attachment C – SunPower Installation Manual
Attachment D-1 – Data Specifications
Attachment D-2 – Data Protection Addendum

By: /S/ Manavendra Sial                

Name: Manvendra Sial                

Title: 
Vice 
Executive 
Officer                                        
Date:    October 27, 2020            

By: /S/ Manavendra Sial

Name: Manavendra Sial

President 

and 

Chief 

Financial

Title: Executive Vice President and Chief Financial Officer

Date: October 27, 2020

Attachment A – Enphase IQ™ 7 XS Data Sheet

[*]

Attachment B

Pricing, Volumes, Shipping and Payment

Enphase MPN

SPWR
Part #

Enphase Description

Enphase
UoM

Packaging

Inco terms

Payment
Terms

2020 Price/Unit

2021 Price/Unit

IQ7XS-96-2-US

533855

ENV-IQ-AM1-
240

535944

IQ7PD-84-2-US

535945

96 cell discrete IQ7XS
Microinverter for replacing
legacy Sunpower/Solarbridge
AC modules with Q-DCC-2
and metal mounting plate
included (PVS6 support only)

IQ Envoy, single phase,
metered. Revenue grade
accuracy (ANSI C12.20 +/-
0.5%) with calibrated solid-
core CT

IQ7 Power Down
Microinverter with 220 VA
peak power supporting PV
modules of 250W and lower
with Q-DCC-2 and metal
mouting plate include (Envoy
support only)

1ea

1 Box of 18 Units FCA Long Beach [*]

1ea

1 Box of 12 units FCA Long Beach [*]

[*]

[*]

[*]

[*]

1ea

1 Box of 18 Units FCA Long Beach [*]

[*]

[*]

[*]

[*]

1. Minimum Volume Commitment. SunPower agrees to purchase and Enphase agrees to sell to SunPower, during the period from [*], a minimum of (i) [*] Enphase IQ7XS-96-2-
US microinverters and (ii) [*] Enphase IQ7PD-84-2-US microinverters.

2. Shipping. Covered Products shall be delivered FCA (Incoterms 2010) Long Beach Enphase warehouse. Enphase may make partial shipments of the Covered Products, and
each shipment will constitute a separate sale. SunPower also will pay shipping charges in accordance with FCA. Title to Covered Products shipped under any Purchase Order shall
pass to SunPower upon delivery of such Covered Products to SunPower at Long Beach Enphase warehouse.

3. Payment. SunPower shall pay each Invoice for Covered Products in accordance with the MSA, except that terms of payment for Covered Products shall be net [*] days from the
date of Invoice and payment shall be made regardless of whether shipment is in whole or partial fulfillment of a Purchase Order.

 
 
Attachment C

[*]

Attachment D-1

Data Specifications

Remarks

Item #

Feature

 At the current polling frequency (2.5 min) or a modified polling rate as agreed upon by both parties to
exceed no more than a 15 min interval

1

2

3

Telemetry data Microinverter
[Raw]

Telemetry data Microinverter
[Aggregated]

Microinverter firmware upgrade
information

Microinverter PL

5 PVS status

Fields include (temp, acv, acw, aci, dcv, dcw, dci, freq, lte, timestamp, polling freq)

Fields include (temp, acv, acw, aci, dcv, dcw, dci, freq, lte, timestamp, polling freq)

Prior upgrades, upgrade date etc to be provided as part of data table, separate from the Splunk database

PL to be provided as decimal value in splunk

To be provided as part of data table, separate from the Splunk database

6 PVS SW Information

Prior upgrades, upgrade date etc to be provided as part of data table, separate from the Splunk database

7 Events [Raw]

Enphase condition messages, including Gate fix, Grid Outage, Temp Event, Skip Event, and other events

8 Events [Aggregated]

Daily count of events for individual microinverters

9 Location details

AddressID and site zip code to be provided as part of data table, separate from the Splunk database

10 Temperature data Microinverter

Tmax, Tmin

11 Grid details

Grid profile name, settings, upgrade

12 Micro PN, Assly Num

13 Created Date

14 First Report Date

15 Last report Date

16 Days flags

To be provided as part of data table, separate from the Splunk database

To be provided as part of data table, separate from the Splunk database

To be provided as part of data table, separate from the Splunk database

To be provided as part of data table, separate from the Splunk database

17 Bridge fault per day

To be provided as part of data table, separate from the Splunk database

Data parameters being provided and refreshed as appropriate in the data table titled “Enphase Distribution List of Installed Units” as of September 25,
2020 will continue to be provided unless both parties agree to add, remove, or modify fields. Such data fields include the following:

-    CSV file: Contain list of all installed microinverters in the field (Updated weekly)
-    Energy Link: A tool for visual analysis of microinverter/sites long term performance. Data downloadable in CSV format (polling 5 minutes)
-    Splunk: Data stored in both granular level and at aggregated level as well. Contains telemetry data, events data, configuration data, power drops,

bridge faults, etc. Within Splunk it is structured in indexes as below:
o    dev_enp_enphasemipolldaily_summary - daily aggregation of every MI in the Enphase fleet with key daily metrics like daily power, number

of reports, and temperature delta (polling 1 day)

o    dev_rap_enphasealerts_summary - daily aggregation of every MI in the Enphase fleet with focus on alerts - count of different types of alerts

(polling 1 day)

o    dev_rap_enphasemiflag_summary - daily aggregation of MI's with questionable behavior along with some key metrics to quantify the daily

behavior (polling 1 day)

 
 
 
o    dev_rap_enphasebridgefaultcndduration_summary - daily aggregation of skip event duration and event count to focus on skip event issues

(polling 1 day)

o    enphase - most granular polling data for Enphase inverters, includes MIPoll, EnCnd (MI Alerts), HighSkipRate, and other enphase-specific

MI messages (polling 2.5 minutes)

o    dev_enp_allalerts_summary - a dump of all Enphase alerts produced by the flexet, sent into a summary index for storage (polling 1 day)
o    prod_rap_mimecfg_summary - all PVS configuration files for all PVS (use type="Enphase") (polling 1 day)
o    dev_enp_enphasemipolldaily_- daily aggregation of every MI in the Enphase fleet with key daily metrics like daily power, number of reports,

and temperature delta (polling 1 day)

o    dev_rap_enphasemiweekly_summary - weekly aggregation of MI performance metrics - used to identify underperforming units. Currently

not returning records. (polling weekly)

o    dev_rap_enphasemiflag_summary - daily aggregation of MI's with questionable behavior along with some key metrics to quantify the daily

behavior (polling 1 day)

o    dev_rap_enphasebridgefaultcndduration_summary - daily aggregation of skip event duration and event count to focus on skip event issues

(polling 1 day)

o    dev_enp_allalerts_summary - a dump of all Enphase alerts produced by the flexet, sent into a summary index for storage (polling 1 day)
o    prod_rap_mimecfg_summary - all PVS configuration files for all PVS (use type="Enphase") (polling 1 day)
o    dev_enp_enphasemipolldaily_summary - daily aggregation of every MI in the Enphase fleet with key daily metrics like daily power, number

of reports, and temperature delta (polling 1 day)

o    dev_rap_enphasemiweekly_summary

Notwithstanding the foregoing, ninety (90) days following the Amendmnet Effective Date the Parties will meet in good faith to determine whether the
data fields in the following “Conditions” data set are reasonably required for Enphase to conduct failure analysis in connection with its limited warranty
obligations to SunPower’s end user customers. If mutually agreed upon by the Parties in good faith, some or all of the data fields below may be
removed from the list of data which SunPower is obligated to provide to Enphase pursuant to Section 5(d) of the Amendment:

    dev_rap_enphasemiflag_summary - daily aggregation of MI's with questionable behavior along with some key metrics to quantify the daily

behavior (polling 1 day)

    dev_rap_enphasebridgefaultcndduration_summary - daily aggregation of skip event duration and event count to focus on skip event issues

(polling 1 day)

    dev_enp_allalerts_summary - a dump of all Enphase alerts produced by the flexet, sent into a summary index for storage (polling 1 day)
    prod_rap_mimecfg_summary - all PVS configuration files for all PVS (use type="Enphase") (polling 1 day)
    dev_enp_enphasemipolldaily_summary - daily aggregation of every MI in the Enphase fleet with key daily metrics like daily power, number of

reports, and temperature delta (polling 1 day)

    dev_rap_enphasemiweekly_summary

Attachment D-2

Data Protection Addendum (“DPA”)

1.    DEFINITIONS

To the extent not otherwise defined in the parties’ MSA or purchase order, terms defined in this DPA shall bear the below meanings and cognate terms shall be construed accordingly.

1.1.    “Applicable Regulation” means, to the extent applicable, all regulations and applicable industry standards in force on data protection and data privacy relating to that Personal Information
for each relevant jurisdiction where Supplier provides services to SunPower, e.g., federal laws, state laws (including, if applicable, the California Consumer Privacy Act (“CCPA”)), Gramm-
Leach-Bliley Act (“GLBA”), California's Social Security Number Confidentiality Law, Cal. Civ. §1798.85, Nevada SB 220, New York’s  Stop  Hacks  and  Improve  Electronic  Data  Security  Act
(“Shield Act”), and Payment Card Industry Data Security Standard (“PCI-DSS”)).

1.2.    “Affiliate” for the purpose of data processing means an entity that owns or controls, is owned or controlled by, or is or under common control or ownership with another entity (control is
defined as the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of an entity, whether through ownership of voting securities, by
contract or otherwise).

1.3.    “Consumer” means a natural person.

1.4.    “Business” means a legal entity that is organized or operated for the profit or financial benefit of its shareholders or other owners that collects Consumers’ Personal Information, or on behalf

of whom such information is collected and that alone, or jointly with others, determines the purposes and means of the processing of Consumers’ Personal Information.

1.5.    “Business Purpose” means the use of Personal Information for the Business’s or service provider’s operational purposes, or other notified purposes, provided that the use of Personal
Information is reasonably necessary and proportionate to achieve the operational purpose for which Personal Information was collected or processed or for another operational purpose that
is compatible with the context in which Personal Information was collected.

1.6.     “Collects,” “collected,” or “collection” means buying, renting, gathering, obtaining, receiving, or accessing any Personal Information pertaining to a Consumer by any means.

1.7.    “Commercial Purposes” means to advance a person’s commercial or economic interests, such as by inducing another person to buy, rent, lease, join, subscribe to, provide, or exchange

products, goods, property, information, or services, or enabling or effecting, directly or indirectly, a commercial transaction.

1.8.    “Environment” means all equipment, work stations, servers, cloud environments, mobile devices, networks, storage devices, applications and other systems where SunPower’s Personal

Information may be transmitted, Processed, or stored.

1.9.    “Personal Information” shall have the meaning ascribed to it by the Applicable Regulations. For purposes of this DPA, Personal Information is limited to the Personal Information provided to

Supplier by SunPower.

1.10.    “Process,” “Processing,” and “Processes” refer to any operation or set of operations that are performed on Personal Information or on sets of Personal Information, whether or not by

automated means.

1.11.     “Sell” means selling, renting, licensing to others, releasing, disclosing, disseminating, making available, transferring, or otherwise communicating orally, in writing, or by electronic or other

means, a Consumer’s Personal Information by the Business to another Business or a third party for monetary or other valuable consideration.

1.12.    “Service Provider” means a legal entity that is organized or operated for the profit or financial benefit of its shareholders or other owners that Processes information on behalf of a Business

and to which the Business discloses a Consumer’s Personal Information for a Business Purpose.

1.13.        “Services”  means  the  services  or  other  activities  to  be  supplied  to  or  carried  out  by  or  on  behalf  of  Supplier  for  SunPower  pursuant  to  the  parties’  MSA  or  purchase  order,  including

providing technical support, root cause or performance analysis, improving Supplier’s Products, maintaining records, complying with legal obligations,

exercising rights and obligations with respect to the MSA, and other related services in connection with Supplier’s warranty obligations.

1.14.        “Subcontractor”  means  a  person  (but  excluding  any  employee  of  Supplier)  engaged  or  appointed  by  Supplier  to  receive  or  Process  Personal  Information  on  behalf  of  SunPower  in

connection with the MSA or purchase order.

1.15.    “Supplier” means Enphase.

1.16.    “Security Breach” means a breach of security leading to the accidental or unlawful unauthorised disclosure of, or access to, Personal Information.

2.    AUTHORITY

2.1.    Supplier warrants and represents that it has the requisite authority to enter into this DPA on behalf of any of its Affiliates that will Process Personal Information as an agent of Supplier and on

behalf of SunPower.

2.2.    SunPower warrants and represents that (i) it has the requisite authority to enter into this DPA on beahf of any of its Affiliates and that it will provide the Data to Supplier for the purposes set

forth herein; and (ii) it shall at all times comply with Applicable Regulations in the provision of Personal Information to Supplier.

3.1.    The parties acknowledge and agree that Supplier is a Service Provider providing Services to and Processing Personal Information on behalf of SunPower, a Business.

3.    DATA PROCESSING

3.2.    Supplier shall at all times comply with Applicable Regulations in the Processing of the Personal Information.

3.3.    When Supplier Processes Personal Information on behalf of SunPower, Supplier shall not:

3.3.1.    retain, use, or disclose Personal Information it receives, collects or Processes in connection with the Services for any purpose other than for performing the Services in the MSA and in

accordance with the terms of this DPA, the parties’ MSA and SunPower’s instruction;

3.3.2.    use or Process Personal Information for Commercial Purposes or direct marketing;

3.3.3.    Sell or promote the sale of Personal Information; and

3.3.4.    disclose or transfer Personal Information to unauthorized personnel or parties.

3.4.    Supplier shall without undue delay notify SunPower in writing if it determines or reasonably suspects its inability to comply with its obligations set forth in Section 3.3 above. Upon any such

notice to SunPower, Supplier shall promptly cease all use of Personal Information hereunder, but its obligations regarding safeguarding information shall remain in effect.

3.5.    Supplier shall be entitled to (i) create and derive from Processing the Personal Information anonymized and/or aggregated data that does not identify SunPower or any natural person, and

(ii) use, publicize or share with third parties such data to improve Supplier’s products and services and for other lawful business purposes.

4.    PERSONNEL AND SUBCONTRACTORS

4.1.    Supplier will take reasonable steps to ensure that each of its employees and agents who Process Personal Information are made aware of Supplier’s obligations under this DPA, and where

required by Applicable Regulation, shall require that they enter into binding obligations with Supplier as appropriate to maintain the levels of security and protection required under this DPA.

4.2.    Supplier shall strictly limit access to Personal Information to those individuals who need to know, as necessary for the purpose of providing Services.

4.3.    Supplier will only engage a Subcontractor provided that a written contract is executed by Supplier with the Subcontractor that includes obligations to use same degree of care in safeguarding
the Personal Information as it uses to safeguard its own confidential information, but in no event less than reasonable care . Supplier acknowledges and agrees that it remains obligated and
fully liable to SunPower for the acts and omissions of any Subcontractor in connection with this Section 4.3.

5.1.        Supplier  represents  and  warrants  that,  in  connection  with  the  Services  provided  to  SunPower,  Supplier  shall  at  all  times  have  in  place,  maintain,  and  use  all  necessary  and  reasonable

technical, physical and organizational measures

5.    SECURITY

commensurate with the industry standards for information security, applicable law, and the sensitivity of Personal Information collected, handled, stored, and otherwise Processed, in order to
help ensure:

5.1.1.    the security of Personal Information against any Security Breach;

5.1.2.    the confidentiality of Personal Information, by ensuring that persons authorized to access, view, and/or otherwise Process Personal Information are given such rights based only on a

need for such access in connection with the Services; and

5.1.3.    to the extent relevant, that its access to SunPower’s systems and/or networks, including any credentials thereto, shall be properly created, secured, maintained and architected such

that it shall not pose a material security risk or threat to or otherwise expose SunPower’s Environment, data, website, systems, landing pages, Consumers or customers.

5.2.    Supplier shall notify SunPower, or its preferred contact, immediately and not to exceed twenty-four (24) hours, after becoming aware of the Security Breach by phone (not including a voice or
text message) and in writing (but not by unsecured email) at help@sunpowercorp.com specifying the extent to which SunPower’s Personal Information was compromised or disclosed, and
will take all reasonable measures required to rectify the Security Breach as soon as possible. In this regard, Supplier at a minimum will:

5.2.1.    investigate the Security Breach, perform a root cause analysis thereon, and report its findings to SunPower; and

5.2.2.    provide SunPower with a remediation plan to address the Security Breach and regularly keep SunPower informed as and when remedial or containment actions are implemented.

5.3.    Supplier agrees that it will not inform any third party of any Security Breach without first obtaining SunPower’s prior written consent, other than to inform a complainant that the matter has
been forwarded to SunPower’s legal counsel. Further, Supplier agrees that SunPower shall have the sole right to determine the contents of any such notice of a Security Breach, whether any
type of remediation may be offered to affected Consumers, and the nature and extent of any such remediation.

5.4.    To the extent agreements between the parties do not designate a notice contact, notices under this Section should be sent via email to LegalNoticeSunPower@sunpowercorp.com ATTN:

General Counsel.

5.5.    Supplier shall, at all times they are providing services to SunPower or remain in possession of Personal Information belonging to SunPower, maintain in force, at its own expense, insurance

coverage appropriate to ensure proper performance of its obligations hereunder.

6.1.    Supplier shall, for no additional compensation, (1) provide to SunPower, at its request, an Officer’s Certificate from a member of Supplier’s C-Suite confirming Supplier’s compliance with the
obligations  stipulated  in  this  DPA;  and  (2)  reasonably  assist  Supplier,  at  Supplier’s  expense,  in  ensuring  compliance  with  Applicable  Regulation,  including  audits  or  inquiries  from  law
enforcement or government authorities, taking into account the nature of the Processing and the information available to Supplier.

6.    AUDITS AND INFORMATION REQUESTS

7.    TERMINATION

7.1.    Upon termination of the MSA Supplier shall promptly anonymize all Personal Information, as well as any existing copies. Within ten (10) days of returning or destroying such information,

Supplier shall provide a certification to SunPower confirming same.

7.2.    In the event Applicable Regulation does not permit Supplier to comply with the return or deletion of Personal Information, Supplier warrants that it will ensure the confidentiality and protection

of Personal Information and that it will not Process Personal Information transferred after termination of the relationship.

8.1.    Supplier will defend, at its own expense, any claim, suit or proceeding brought by an unaffiliated third party (a “Claim”) against SunPower to the extent it is based upon an allegation that

Supplier materially breached the terms of this DPA, and, provided SunPower complies with the provisions hereof and is not otherwise in material breach of any

8.    INDEMNIFICATION & LIABILITY

provision of this DPA, Supplier will pay all settlement amounts and damages, costs and expenses finally awarded to third parties against SunPower in such action.

8.2.    SunPower will defend, at its own expense, any Claim against Supplier to the extent it is based upon an allegation that SunPower materially breached the terms of this DPA, and provided
Supplier complies with the provisions hereof and is not otherwise in material breach of any provision of this DPA, SunPower will pay all settlement amounts and damages, costs and expenses
finally awarded to third parties against SunPower in such action.

8.3.        The  obligation  of  the  indemnifying  party  (the  “Indemnifying  Party”)  to  defend  the  other  party  (the  “Indemnified  Party”)  is  conditioned  upon  the  Indemnified  Party  promptly  notify
Indemnifying Party in writing of any such claim or action and giving the Indemnifying Party full information and assistance in connection therewith. The Indemnifying Party shall have the sole
right  to  control  the  defense  and  settlement  of  any  such  claim  or  action.  The  Indemnifying  Party  will  not  settle  any  Claim  without  the  written  consent  of  the  Indemnified  Party;  provided,
however, that, after reasonable notice, the Indemnifying Party may settle a claim without the Indemnified Party’s consent if such settlement (A) makes no admission or acknowledgment of
liability or culpability with respect to the Indemnified Party, (B) includes a complete release of the Indemnified Party and (C) does not seek any relief against the Indemnified Party other than
the payment of money damages to be borne by the Indemnifying Party. The Indemnified Party will cooperate in all reasonable respects with the Indemnifying Party and its attorneys in the
investigation,  trial  and  defense  of  any  Claim  and  any  appeal  arising  therefrom  (including  the  filing  in  the  Indemnified  Party’s  name  of  appropriate  cross-claims  and  counterclaims).  The
Indemnified  Party  may,  at  its  own  cost,  participate  in  any  investigation,  trial  and  defense  of  any  Claim  controlled  by  the  Indemnifying  Party  and  any  appeal  arising  therefrom,  including
participating in the process with respect to the potential settlement or compromise thereof. Notwithstanding any other language in the MSA or DPA, the Indemnifying Party will have no liability
under this Section 8 for any Claim to the extent arising as a result of the Indemnified Party’s material breach of its obligations under the MSA or the DPA.

9.    LIMITATION OF LIABILITY

EXCEPT FOR AMOUNTS PAYABLE UNDER SECTION 8 (INDEMNIFICATION AND LIABILITY) OF THIS DPA, IN NO EVENT WILL EITHER PARTY BE LIABLE TO THE OTHER PARTY
FOR ANY INDIRECT, INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES ARISING FROM ANY CLAIM OR ACTION BASED ON OR RELATED TO THIS DPA, REGARDLESS OF
WHETHER  SUCH  CLAIM  OR  ACTION  IS  BASED  ON  CONTRACT,  TORT,  OR  OTHER  LEGAL  THEORY,  AND  REGARDLESS  OF  WHETHER  OR  NOT  SUCH  DAMAGES  WERE
FORESEEABLE OR WHETHER OR NOT THE PARTY WAS ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE LIMITATIONS OF LIABILITY DO NOT APPLY WITH RESPECT
TO (i) LOSSES SUFFERED, INCURRED, OR SUSTAINED BY A PARTY OCCASIONED BY (A) THE FRAUD, WILLFUL MISCONDUCT OR GROSS NEGLIGENCE OF THE OTHER PARTY
OR ITS AGENTS. EXCEPT FOR AMOUNTS PAYABLE UNDER SECTION 8 (INDEMNIFICATION AND LIABILITY) OF THIS DPA, SUPPLIER’S TOTAL CUMULATIVE LIABILITY ARISING
FROM OR RELATING TO THIS DPA, WHETHER IN CONTRACT OR TORT OR OTHERWISE, WILL NOT EXCEED $100,000.

10.1.    The parties acknowledge and agree that the terms and conditions of this DPA shall survive the termination of the MSA or any other agreement between the parties and shall remain in full

force and effect for the entire time Supplier remains in possession or control of Personal Information.

10.2.    In the event of modifications, amendments or changes to Applicable Regulations, the parties agree to cooperate in good faith with respect to any necessary modifications or amendments to

this DPA, to the extent required. Each party shall further take reasonable measures to remain compliant with any such changes in the Applicable Regulation.

10.    MISCELLANEOUS

CONSENT AND WAIVER TO
STOCKHOLDERS AGREEMENT

This    CONSENT    AND    WAIVER    TO    STOCKHOLDERS    AGREEMENT

(this  “Consent  and  Waiver”)  is  dated  as  of  October  15,  2020  (the  “Effective  Date”),  and  is  entered  into  by  and  among  SUNPOWER
CORPORATION,  a  Delaware  corporation  (the  “SunPower”),  SUNPOWER  EQUITY  HOLDINGS,  LLC,  a  Delaware  limited  liability  company
(“SunPower  Equity  Holdings”),  TOTAL  SE,  a  societas  europaea  (formerly  known  as  Total  S.A.;  “Total”  and,  together  SunPower  and  SunPower
Equity  Holdings,  the  “Stockholders”),  and  ENPHASE  ENERGY,  INC.,  a  Delaware  corporation  (the  “Company”  and,  with  the  Stockholders,  the
“Parties” and each a “Party”). Initially capitalized terms used but not otherwise defined in this Consent and Waiver have the respective meanings given
to them in the Stockholders Agreement.

RECITALS

A.        The  Company  and  SunPower  entered  into  that  certain  Stockholders  Agreement,  dated  as  of  August  9,  2018  (the  “Agreement”),  to

establish certain rights, restrictions and obligations of SunPower with respect to the Company Securities Beneficially Owned by SunPower.

B.    SunPower and its Affiliate, SunPower Equity Holdings, entered into that certain Joinder to Stockholders Agreement and Guarantee, dated
as  of  September  24,  2019,  whereby  SunPower  Equity  Holdings  agreed  to  be  a  party  to,  to  be  bound  by,  and  to  comply  with  the  provisions  of  the
Agreement as a “Stockholder”, with all obligations and rights of the “Stockholder” under the Agreement, except as set forth therein.

C.        SunPower  and  its  Affiliate,  Total,  entered  into  that  certain  Joinder  to  Stockholders  Agreement  and  Guarantee,  dated  as  of  October  29,
2019,  whereby  Total  agreed  to  be  a  party  to,  to  be  bound  by,  and  to  comply  with  the  provisions  of  the  Agreement  as  a  “Stockholder”,  with  all
obligations and rights of the “Stockholder” under the Agreement, except as set forth therein.

D.    In accordance with the terms of the Agreement, the Stockholders Transferred 1,000,000 shares of Company Securities during a period

beginning on August 5, 2020 and ending on August 28, 2020 (the “Prior Transfer”).

E.        Pursuant  to  Section  5.1(b)  of  the  Agreement,  the  Transfer  of  more  than  1,000,000  shares  of  Company  Securities  by  the  Stockholders

during any trailing six-month period requires the prior written consent of the Company.

F.    The Stockholders desire to Transfer up to an additional 1,000,000 shares of Company Securities (the “Transferred Securities” and, such

Transfer, the “Q4 Sale”) within six months of the Prior Transfer and the Company desires to consent to such Transfer.

CONSENT AND WAIVER

The  Parties  hereby  agree  to  this  Consent  and  Waiver  in  consideration  of  the  mutual  conditions  and  agreements  set  forth  Stockholders

Agreement and this Consent and Waiver, and
other valuable consideration, the receipt and sufficiency of which are hereby acknowledged, as follows:

1.    Consent and Waiver; the Q4 Sale.

(a)    In accordance with Sections 5.1(b) and 8.6 of the Agreement, the Company hereby consents to the Q4 Sale and, notwithstanding anything

to the contrary therein, the provisions of Section 5.1 of the Agreement are hereby waived solely as to the Q4 Sale in accordance with the terms herein.

(b)    The Transfer of any Company Securities as part of the Q4 Sale shall be made so that, on the date of any Transfer, not more than 1,000,000

shares of Company Securities, including the Transfer, will have been Transferred during the prior three-months.

2.    Subsequent Sale. The Parties agree that, notwithstanding anything to the contrary in Section 5.1(b) of the Agreement, following the Q4
Sale, the next such Transfer of Company Securities undertaken by the Stockholders shall be made so that, on the date of any Transfer, not more than
2,000,000 shares of Company Securities, including the Transfer, will have been Transferred during the prior twelve-months (such Transfer or Transfers
collectively, the “Subsequent Sale”). For the avoidance of doubt, (a) following the consummation of the Subsequent Sale, Section 5.1(b) shall govern
any  subsequent  Transfers  of  Company  Securities  by  the  Stockholders  and  (b)  for  any  Transfer,  including  the  Q4  Sale  and  the  Subsequent  Sale,  the
manner, volume, price and other terms of any such Transfer shall be made at the sole discretion of the Stockholders, subject to the limitations set forth
herein .

3.    Effectiveness of Waiver; Limited Effect; No Modifications. This Consent and Waiver will become effective on the Effective Date. The
waiver set forth above relates solely to Transfer of the Transferred Securities by the Stockholders in the manner and to the extent described above, and
nothing in this Consent and Waiver shall be deemed to constitute a waiver by the Company of compliance with respect to any other term, provision or
condition of the Agreement or any other instrument or agreement referred to therein. Nothing contained in this Consent and Waiver will be deemed or
construed to amend, supplement or modify the Agreement (including, without limitation, the provisions of Section 5.1(b) thereof) or otherwise affect
the rights and obligations of any party thereto, all of which remain in full force and effect.

4.    Miscellaneous. The terms and provisions of Section 8 of the Agreement are incorporated herein by reference, mutatis mutandis.

[Signature Page Follows]

IN WITNESS WHEREOF, the parties have executed and delivered this Consent and Waiver as of the last Date below.

Stockholders:

SUNPOWER CORPORATION,
a Delaware corporation

By:     /S/ Manavendra Sial     Name: Manavendra Sial
Title:        Executive Vice President and Chief Financial Officer
Date:    October 27, 2020

SUNPOWER EQUITY HOLDINGS, LLC,
a Delaware limited liability company

By:    SUNPOWER CORPORATION, a
Delaware corporation, its sole member

By:     /S/ Manavendra Sial     Name: Manavendra Sial
Title:        Executive Vice President and Chief Financial Officer
Date:    October 27, 2020

By:    TOTAL SE,
a societas europaea

By:     /S/ Jean Pierre Sbraire     Name: Jean Pierre Sbraire
Title:        Chief Financial Officer
Date:    November 18, 2020

[SIGNATURE PAGE TO CONSENT AND WAIVER TO STOCKHOLDERS AGREEMENT]

ENPHASE ENERGY, INC.,
a Delaware corporation

By:     /S/ Eric Branderiz     Name: Eric Branderiz
Title: Chief Financial Officer
Date: October 28, 2020

[SIGNATURE PAGE TO CONSENT AND WAIVER TO STOCKHOLDERS AGREEMENT]

[*] = Certain confidential information contained in this document, marked by brackets, has been omitted because it is both not
material and would likely cause competitive harm to the Company if publicly disclosed.

Manufacturing Services Agreement

This Manufacturing Services Agreement ("Agreement") is entered into on October 1, 2019 (“Effective Date”), by and between:

A.    Enphase Energy, Inc. having its place of business at 47281Bayside Parkway, Fremont, CA 94538, on behalf of itself and its Subsidiaries ("Enphase"), and

B.    Salcomp Manufacturing India Private Ltd., having its place of business at Noka Telecom SEZ, SIPCOT Industrial Park, Phas III, Chennai – Bangalore Highway,

Sriperumbudur, Tamil Nadu – India, 602105 on behalf of itself and its Subsidiaries ("Supplier").

Enphase and Supplier shall each be a “Party” and collectively, the “Parties”.

Enphase desires to engage the Supplier, and the Supplier agrees to perform manufacturing services, for good and valuable consideration as further set forth in this
Agreement. The Parties agree as follows:

I.    DEFINITIONS

Supplier and Enphase agree that capitalized terms shall have the meanings set forth in this Agreement and Exhibit A attached hereto and incorporated herein by
reference.

2.    MANUFACTURING SERVICES

2.1.    Work. Enphase hereby engages Supplier to perform the work (hereinafter "Work"). "Work" shall mean to procure Materials (as applicable) and to
manufacture, assemble, and test products, which shall include, but not be limited to: (i) the Combiner Box 3.0; (ii) the Envoy S; and (iii) the IQ7 Microinverter) and any
other  products  as  required  by  Enphase  (collectively,  hereinafter  "Product(s)")  pursuant  to  detailed  written  Specifications  for  each  category  of  Products.  The
"Specifications" for  each  category  of  Products  (or  revision  thereof),  shall  include,  but  are  not  limited  to  bill  of  materials  (“BOM”),  designs,  schematics,  assembly
drawings,  process  documentation,  test  specifications,  packing  specifications,  current  revision  number,  and  Approved  Vendor  Lists,  and  shall  be  further  detailed  in
Exhibit B. For the avoidance of doubt, the Work also includes the Supplier’s responsibility to procure (and/or install, as applicable) the Supplier Controlled Equipment
as listed in Exhibit E. For the avoidance of doubt, the Supplier shall not deviate from the Specifications, the terms of this Agreement or any Exhibit hereto, unless
required by an ECO (as defined herein) issued by Enphase. Enphase may, at its discretion, add new products to the scope of the Products and the Work under this
Agreement (“NPI”). Should Enphase

choose to exercise this right, the Parties will discuss and mutually agree on the fees and other relevant terms applicable to such NPI. For the avoidance of doubt, the
Supplier shall be responsible for translating any of the documents referred to in this Agreement (including the terms of this Agreement itself), to the extent required to
perform the Work to the satisfaction of Enphase.

2.2.    Engineering Changes. Enphase may from time to time, request that Supplier incorporate engineering changes into the Product by providing Supplier
with a description of the proposed engineering change as the Enphase deems necessary, for Supplier to evaluate its feasibility and cost (an “Engineering Change Order”
or “ECO”). An ECO is required when the form, fit, or function of the design of the Product and/or Specifications are affected. Supplier shall provide a written response
in the form of an "Engineering Change Analysis" form to Enphase, within three (3) business days of receipt of an ECO, if such changes affect the per-unit price and/or
delivery of a Product. Enphase shall respond with a written acceptance in the    

form of a purchase order or rejection of the Supplier "Engineering Change Analysis" form within three (3) business days of receipt thereof. Upon receiving Enphase
written acceptance, Supplier will proceed with engineering changes as given in the ECO. For the avoidance of doubt, and notwithstanding anything to the contrary in
this Agreement, the Supplier shall not make any changes to the processes or designs as stated in the Specifications, without Enphase’s express prior written consent.

2.3.    Tooling; Non-Recurring Expenses; Software. Enphase shall pay for or obtain and consign to Supplier any Enphase Controlled Equipment, as outlined
in  Exhibit  D,  Product-specific  tooling,  equipment  or  software  and  other  reasonably  necessary  non-recurring  expenses,  to  be  set  forth  in  Supplier's  quotation.  All
software that Enphase provides to Supplier, or any test software that Enphase engages Supplier to develop is and shall remain the property of Enphase at all times. The
Supplier shall promptly notify Enphase in case of any non-consignment of Enphase Controlled Equipment required to perform the Work.

2.4.    Enphase Controlled Equipment. All Enphase Controlled Equipment will remain the property of Enphase; however, Supplier shall be responsible for
managing and maintaining all such equipment. This Agreement shall be updated to include any additional Enphase Controlled Equipment made available by Enphase
for  Supplier’s  use  in  performing  the  Work.  Notwithstanding  the  location  of  any  Enphase  Controlled  Equipment  at  a  Supplier  or  other  non-Enphase  facility,  or  the
failure to list any item of Enphase Controlled Equipment in the Agreement or a purchase order, all right, title and interest in and to any Enphase Controlled Equipment
will be and remain with Enphase, and Supplier will have no title or ownership interest in such Enphase Controlled Equipment. Supplier will provide Enphase with
reasonable  access  to  all  Enphase  Controlled  Equipment  located  at  a  Supplier  or  other  non-Enphase  facility,  and,  notwithstanding  any  contrary  terms  that  may  be
contained  herein,  will  be  responsible  for  all  costs  and  expenses  associated  with  repair  or  replacement  of  any  Enphase  Controlled  Equipment  or  any  part  thereof
damaged (reasonable

wear  and  tear  excepted)  by  Supplier,  its  employees,  permitted  subcontractors,  agents  or  invitees  (excluding  Enphase).  Neither  Supplier  nor  its  assignees  will  file  a
mechanic’s lien or similar lien, security interest or other encumbrance, on Enphase Controlled Equipment or otherwise use Enphase Controlled Equipment as collateral
for any financing. Without limiting the foregoing, in the event any such lien or security interest is filed, Supplier or its assignee, as the case may be, will be responsible
for the immediate satisfaction, payment or bonding of any such lien or security interest. Unless a later return date is requested by Enphase, within ten (10) business
days following the earlier of completion of the applicable purchase order or any expiration or termination of this Agreement, Supplier will return each item of Enphase
Controlled Equipment to Enphase in substantially the same condition it was in when initially provided to Supplier, reasonable wear and tear excepted.

2.5.    Cost Reduction Projects. Supplier agrees to continuously, during the term of this Agreement, to use its commercially reasonable efforts to seek ways to
reduce the cost of manufacturing Products by methods such as elimination of Materials, redefinition of Specifications, and re-design of assembly or test methods. Upon
implementation  of  such  ways  that  have  been  initiated  by  Enphase,  Enphase  will  receive  100%  of  the  demonstrated  cost  reduction  for  the  balance  of  the  quarter  in
which it is found. Costs shall be formally evaluated at the end of each quarter and standards shall be adjusted based upon that evaluation. Justification for all costs
(including a costed BOM) shall be provided to Enphase no later than 10 business days before the end of the quarter. New standards will be effective for all shipments
starting on the first day of each quarter. The Parties shall mutually agree upon non-binding cost reduction targets during their QBRs.

2.6.    Factory Access. Supplier agrees to grant access as needed to Enphase or its representatives for factory audits at no charge to Enphase. Enphase may at

its option, seat its employees or representatives

onsite  within  the  Supplier’s  factory  premises  (“Onsite Team”),  towards  establishing  an  Enphase  ‘office  desk’  within  the  Supplier’s  factory  premises.  The  Supplier
shall  provide  all  facilities,  equipment  and  support  reasonably  necessary  for  the  Enphase  employees  (or  representatives,  as  applicable)  to  carry  out  their  day  to  day
business activities. The Onsite Team may access the Supplier’s factory at any time during the term of this Agreement, without prior written notice to the Supplier, and
the Supplier expressly consents to the same. Upon providing a written notice at least two (2) weeks in advance, Enphase may bring any of its customers, with the
intention of carrying out an Audit (as defined herein), and the Supplier agrees to co-operate with Enphase (or such Enphase customers, as applicable) for conducting
such  an  Audit.  Notwithstanding  anything  else  contained  in  this  Agreement,  and  in  addition  to  any  of  Enphase’s  rights  of  Audit  and  access,  Enphase  may,  upon
providing 24 hours’ notice to the Supplier, access and/or Audit the Supplier’s factory along with a technical support team.

2.7.    IT Support. Enphase requires a client-to-site connection to the Supplier facility be available at all times to monitor production test equipment and to
troubleshoot any potential problems. Supplier shall provide a static internet connection, through which Enphase can tunnel via a secure protocol such as VPN. Enphase
shall, at its discretion and to the extent required in Enphase’s sole opinion, provide pre-configured equipment for installation at the Supplier facilities.

2.8.    Quality

(a)    Prior to the commencement of the Work, Enphase will have the right (but not the obligation) to conduct a quality Audit on the factory or other premises
used  by  the  Supplier  to  perform  the  Work,  in  order  to  confirm  whether  such  factory  complies  with  the  Specifications  (as  applicable).  The  Supplier  will  resolve  to
Enphase’s satisfaction, any critical or major issues identified by Enphase during such Audit, prior to beginning production of the Products.

(b)        Enphase  is  contracting  to  buy  conforming  Products,  assemblies  or  components,  and  expects  Defect-  free  yields  from  Supplier.  Enphase  seeks  a
relationship with Supplier that maximizes the probability of 100% Defect-free Product. To ensure quality, the Supplier shall dedicate a team of adequate number of
Supplier Personnel with appropriate qualifications, along with a team leader who shall be fluent in English. The Supplier shall ensure that adequately qualified Supplier
Personnel are available at all times to Enphase. Supplier will set up an incoming quality control (“IQC") system to inspect all Materials used in the Product based on
the  component  Specifications  on  a  sampling  basis.  Supplier  will  ensure  only  IQC  “passed”  Material  is  utilized  in  the  Products,  and  will  maintain  records  for  lot
traceability into the production serial range. Supplier will ensure incoming Materials have no substitution for country of origin, and will require a COC per lot. Enphase
shall subject the Products delivered by the Supplier to an accelerated lifetime testing regimen as well as ongoing reliablility testing. Any failures in such testing that
arise from differences in Materials, Specifications or processes specified by Enphase in this Agreement or any subsequent ECOs shall be considered a Defect

(c)    Quality includes, but is not limited to, all properties of the Product that contribute to customer satisfaction, including function, workmanship, appearance,
performance, reliability, timely delivery, invoicing, packing, packaging, meeting hazardous substance restrictions and support. Supplier will follow a PPAP process as
outlined  in  Exhibit  B  to  launch  each  new  production  TAN.  Supplier  will  develop  an  operator  certification  program  and  online  station  validation/record  keeping  to
ensure only “trained/certified” operators are on the production line.

(d)        The  primary  goal  of  Supplier’s  quality  planning  will  be  prevention  and  early  detection  of  Defects,  as  opposed  to  reacting  to  Defects  as  they  are
discovered. Upon request, Supplier will demonstrate to Enphase that its quality control plans are inherently capable of meeting Defect-free standards. The Supplier will
endeavor
to obtain and maintain the ISO 9001:2015 certification during the term of this Agreement.

(e)        Supplier  will  deliver  Products  conforming  to  applicable  specifications  and  which  are  100%  Defect-  free.  The  date  code  limitation  for  all  inbound
components will be the greater of: (i) the designated expiration date of the Materials; or twenty four (24) months from the date of manufacture. Supplier will develop a
quality program for its production process that ensures Products are Defect-free. At Enphase’s request, Supplier will supply Enphase with process control data to help
Enphase ascertain the probability of receiving Defect-free Product. During any production period, the Supplier will follow the DPPM shutdown rules as detailed in
Exhibit B.

(f)    At its option, Enphase may inspect and test any or all Products received by Enphase, and such inspection may be by lot sampling or by testing individual
units. When lot sampling is used, the applicable standard will be the industry-recognized zero defects (C = 0) plan at the appropriate confidence level. Such testing
and/or inspection may take place at Enphase’s facility or at Supplier’s facility. If at Supplier’s facility, Supplier agrees to provide reasonable support and services to and
for Enphase’s representative. Supplier agrees that the representations and warranties made in this Agreement with respect to Products will continue to apply regardless
of whether Enphase accepts, tests or inspects any Product Unit or lot.

(g)    The Supplier acknowledges that the obligations on quality provided in Sections 2.8 (a) to (f) are essential so that Enphase may achieve its goals under this
Agreement. To the extent that any Materials, or portions of the Work are performed for the Supplier by any third-party supplier, the Supplier shall ensure that such
third- party Suppliers are bound by obligations at least as onerous as those in this Agreement, with relation to quality and compliance to the applicable Specifications.
Supplier shall notify Enphase in writing of any such third-party supplier, and Enphase reserves the right to reasonably reject Supplier’s use of any third party supplier.

(h)    If Defects, including Enphase’s rejection and/or return of Product as permitted under this Agreement, cause a Line Down, Supplier, within 24 hours of
receipt of notice thereof from Enphase will provide qualified repair personnel at Enphase’s or Enphase’s customer’s facility to repair or sort, at Enphase ’s option, such
defective  Product  at  no  cost  to  Enphase  or  Enphase’s  customer.  “Line  down,”  as  used  in  the  preceding  sentence,  means  the  cessation  or  delay  of  manufacturing,
assembly or shipment operations experienced by Enphase and/or a Enphase customer as a result of a Defect or action or inaction by Supplier.

(i)        If  any  Product  does  not  comply  to  the  Specifications,  in  accordance  with  Section  2.8  (e)  and  is  therefore  rejected  by  Enphase,  Supplier  will  supply
Enphase with a return material authorization or replacement Product within three (3) business days of Enphase’s request. Supplier further agrees to supply Enphase
with an initial failure analysis within 24 hours and a containment plan within 48 hours and to provide due diligence in obtaining a full failure analysis within seven
days of receipt of samples of rejected Product. Supplier agrees to provide the full failure analysis to Enphase in the format prescribed by Enphase.

(j)        If  any  replacement  Products  delivered  pursuant  to  Section  2.8  (e)  have  Defects  or  otherwise  fail  to  conform  to  the  requirements  of  this  Agreement,
Enphase may, at its option, cancel the related purchase order in whole or in part, without penalty or liability whatsoever to Enphase and/or Enphase may avail itself of
any remedy set forth herein or pursuant to applicable Law.

(k)    Upon request, Supplier will make available to Enphase all Product test data relating to qualification as well as production yield to evidence conformance
to specifications and quality control. Supplier will facilitate product sampling for ongoing reliability testing (“ORT”) for Enphase. Sampling  program  is  detailed  in
Exhibit
B. Supplier will provide resources at their facility to perform 1st level failure analysis for any failures that occur in ORT. Supplier will provide a weekly ORT report
which tracks the status of the units submitted to the chambers, and the failure status by week.

(l)    The Parties will meet on a weekly basis, to conduct an ongoing review of the steps required to ensure Product quality as envisaged by this Agreement.
Supplier  will  track  yield  at  each  process  step/test  station,  and  perform  pareto  analysis,  root  cause  analysis  and  corrective  action  per  week  to  address  the  top  items
causing first pass yield loss (including NTF) per week. Data will be presented in a format as prescribed by Enphase to demonstrate the yield results, paretos, and action
taken to address issues. This data will be reviewed in a joint weekly meeting between the Parties.

(m)    For the purpose of ensuring quality and effective compliance to each Party’s obligations under this Agreement, a quarterly business review (“QBR”)
shall be held every three (3) months, face-to-face in a mutually agreed location, generally at one of Supplier’s locations (i.e. a factory currently performing Work for
Enphase).  It  may  on  occasion  be  held  at  an  Enphase  office.  Conference  call  participation  should  be  limited.  To  maintain  focus  and  ensure  direct  and  open
communication, only key participants shall be present and shall include senior management representation from both Parties. The purpose of the QBR includes, but is
not limited to reviewing Supplier performance, business trends, quality performance, improvement initiatives and strategic direction. The items to be reviewed shall, at
either Party’s request, include items such as cost savings initiatives, Product pricing, Special Inventory and Lead Times. In general, these meetings shall assess the
future outlook and review the previous period.

3.    FORECASTS; ORDERS; FEES; PAYMENT

3.1.    Forecast. Enphase shall provide Supplier, on a monthly basis, a rolling twelve (12) month forecast indicating Enphase's monthly Product requirements.
The first ninety (90) days of the forecast shall be in weekly time buckets and will constitute Enphase's written purchase order for all Work to be completed within the
first ninety (90) day period. Such purchase orders will be issued in accordance with Section 3.2 below. The remainder of the forecast is non-binding.

3.2.    Purchase Orders; Precedence. Enphase may use its standard purchase order form for any notice provided for hereunder; provided that all purchase
orders must reference this Agreement and the Specifications (if applicable). The Parties agree that the terms and conditions contained in this Agreement shall prevail
over any terms and conditions of any such purchase order, acknowledgment form or other instrument, unless specifically agreed in writing by both Parties.

3.3.        Purchase  Order  Acceptance.  Purchase  orders  shall  normally  be  deemed  accepted  by  Supplier  unless  the  Supplier  notifies  Enphase  of  Supplier’s

objections to any purchase order within three
(3) days of receipt of such purchase order.

3.4.    Fees; Changes; Taxes.

(a)    The fees will be agreed by the Parties and will be indicated on the purchase orders issued by Enphase and accepted by Supplier. The initial fees shall be as set

forth on the Fee List attached hereto and incorporated herein as Exhibit C (the "Fee List"). If a Fee

List is not attached or completed, then the initial fees shall be as set forth in purchase orders issued by Enphase and accepted by Supplier in accordance with the terms
of this Agreement.

(b)    All costs and fees will be evaluated quarterly during the ]QBR. The Parties shall agree to such costs, including but not limited to any BOM costs for a
subsequent  quarter  during  the  aforementioned  review.  Any  changes  and  timing  of  changes  shall  be  agreed  by  the  Parties,  such  agreement  not  to  be  unreasonably
withheld or delayed. By way of example only, the fees may be increased if the market price of fuels, Materials, equipment, labor and other production costs, increase
beyond normal variations in pricing or currency exchange rates as demonstrated by Supplier, to the satisfaction of Enphase.

(c)    All fees are exclusive of federal, state and local excise, sales, use, VAT, and similar transfer taxes, and any duties, and the Supplier shall be responsible for

all such items.

(d)    Undisputed invoices will be paid by the Customer within [*] days from the date of receipt by Enphase of the shipment made by the Supplier of Products

under a relevant purchase order.

4.    MATERIALS PROCUREMENT; ENPHASE’S RESPONSIBILITY FOR MATERIALS

4.1.        Authorization  to  Procure  Materials,  Inventory  and  Special  Inventory.  Enphase's  purchase  orders  and  forecast  will  constitute  authorization  for
Supplier to procure: (a) Inventory to manufacture the Products covered by such purchase orders based on the Lead Time and (b) certain Special Inventory based on
Enphase's purchase orders and forecast as follows: Long Lead-Time Materials as required based on the Lead Time when such purchase orders are placed and Minimum
Order  Inventory  as  required  by  the  third  party  supplier.  Supplier  will  only  purchase  Economic  Order  Inventory  with  the  prior  approval  of  Enphase.  Supplier  will
provide to Enphase each quarter a list of all Long Lead Time Materials (greater than 8 weeks) and the total quantity on order for each long lead time part.

4.2.    Preferred Supplier. Enphase shall provide to Supplier and maintain an Approved Vendor List (or AVL). Supplier  shall  purchase  from  vendors  on  a
current AVL the Materials required to manufacture the Product. Enphase shall give Supplier an opportunity to be included on AVL's for Materials that Supplier can
supply, and if Supplier is competitive with other approved vendors as determined by Enphase, Supplier shall be included on such AVL's. If Enphase determines that the
Supplier  is  on  an  AVL  and  its  prices  and  quality  are  competitive  with  other  vendors,  Enphase  will  raise  no  objection  to  Supplier  sourcing  Materials  from  itself.
Notwithstanding  anything  else  contained  in  the  Agreement,  unless  otherwise  agreed  by  Enphase  in  writing,  the  Supplier  shall  be  bound  to:  (i)  follow  any  Enphase
approved splits to an AVL; and (ii) to the extent applicable and instructed by Enphase, purchase Materials only from those vendors listed in a current AVL. For the
purposes  of  this  Section  4.2  only,  the  term  "Supplier"  includes  any  companies  affiliated  with  Supplier  including  the  Supplier’s  subsidiaries.  For  Supplier  sourced
material,  Supplier  must  either:  (i)  provide  a  reasonable  annual  cost  reduction  based  upon  comparison  to  similar  commodities;  or  (ii)  provide  proof  of  competitive
bidding on the Supplier sourced parts on an annual basis.

4.3.        Enphase  Responsibility  for  Inventory  and  Special  Inventory.  Enphase  is  responsible  under  the  conditions  provided  in  this  Agreement  for  all
Materials, Inventory and Special Inventory purchased by Supplier under this Section 4, to the extent that such Materials, Inventory and Special Inventory have been
purchased: (i) at Enphase’s request; or (ii) solely for performing the Work. Notwithstanding the foregoing, the Supplier shall implement industry standard practices, for
the  storage  and  safety  of  such  Materials,  Inventory  or  Special  Inventory.  The  Supplier  shall  maintain  the  minimum  quantities  of  Materials,  Inventory  and  Special
Inventory as outlined in Exhibit F to this Agreement, in order to ensure timely fulfillment of purchase orders issued by Enphase.

4.4.    Materials Warranties. Supplier shall use its best efforts to obtain and pass through to Enphase the following warranties with regard to the Materials
(other  than  the  Enphase  Controlled  Materials)  for  a  period  of  at  least  [*]  years:  i)  conformance  of  the  Materials  with  the  vendor's  specifications  and  with  the
Specifications; (ii) that the Materials will be free from defects in workmanship; (iii) that the Materials will comply with Environmental Regulations and all applicable
Laws; and (iv) that the Materials will not infringe the intellectual property rights of third-parties. Supplier shall promptly inform Enphase if it is not able to obtain and
pass through the foregoing warranties with regard to any Materials.

5.    SHIPMENTS, SCHEDULE CHANGE, CANCELLATION, STORAGE

5.1.    Shipments. All Products delivered pursuant to the terms of this Agreement shall be suitably packed for shipment in accordance with the Specifications
and marked for shipment to Enphase's destination specified in the applicable purchase order. Shipments will be made DDP (lncoterms 2000) by the Supplier and will
be received by Enphase at locations specified by Enphase in the purchase order, at which time risk of loss and title will pass to Enphase. The Supplier and Enphase
shall mutually agree on the cost of such shipments during the QBR. The costs for shipments as a result of any new Products or additional Work requested by Enphase,
shall be mutually agreed to between the Parties, as and when applicable.

5.2.    Quantity Increases and Shipment Schedule Changes.

(a)    Supplier will use reasonable commercial efforts to meet any quantity increases as requested by Enphase at no additional cost to Enphase apart from the

applicable fees, provided that such quantity increases are subject to availability of Materials.

(b)    For purposes of calculating the amount of Inventory and Special Inventory subject to subsection (b), the "Lead Time" shall be calculated as the Lead Time

at the time of procurement of the Inventory and Special Inventory.

5.3.    Mitigation of Inventory and Special Inventory. Prior to invoicing Enphase for the amounts due pursuant to Sections 5.1 or 5.2, Supplier will use its
best efforts for a period of thirty (30) days, to return unused Inventory and Special Inventory and to cancel pending orders for such items, and to otherwise mitigate the
amounts payable by Enphase. Enphase shall pay amounts due under this Section 5 within sixty
(60) of receipt of an invoice. Supplier will ship the Inventory and Special Inventory paid for by Enphase under this Section 5.3 to Enphase promptly upon said payment
by Enphase. In the event Enphase does not pay within sixty (60) days from the date of expiry of the

aforementioned payment term, Supplier will be entitled to dispose of such Inventory and Special Inventory in a commercially reasonable manner and credit to Enphase
any  monies  received  from  third-parties.  The  Supplier  will  make  available  to  Enphase  on  a  quarterly  basis,  a  report  containing  details  of  any  excess  or  obsolete
Inventory held by the Supplier. The Parties will mutually agree on a course of action to deal with such Inventory.

5.4.    Delivery performance. Time is of the essence in Supplier’s performance under this Agreement. On time delivery shall be measured and reported to
Enphase on a monthly basis. Orders shall be considered on time if they are shipped from one week earlier than the scheduled shipment date up to one day after the
scheduled shipment date. If Supplier cannot meet the on-time delivery requirement for any order due to Supplier's failure to make a timely shipment, then Supplier will
ship that Order at Supplier’s' own expense via air transportation or other expedient means acceptable to Enphase, at the earliest, to minimize the delay in delivery.
Notwithstanding anything else contained in this Agreement, if a shipment of Products is delayed by more than thirty (30) days Enphase shall have the right to terminate
this Agreement with no further liability to the Supplier except for payments to be made for shipments already delivered.

6.    PRODUCT ACCEPTANCE AND EXPRESS LIMITED WARRANTY

6.1.    Product Acceptance. The Products delivered by Supplier will be accepted upon delivery provided that they meet the criteria, in accordance with section
5.1 of this Agreement. If Products do not comply with the terms of the PO or the express limited warranty set forth in Section 6.2 below, Enphase has the right to reject
such  Products  during  said  period.  Products  not  rejected  during  said  period  will  be  deemed  accepted.  Enphase  may  return  defective  Products,  freight  collect,  after
obtaining a return material

authorization number from Supplier to be displayed on the shipping container and completing a failure report. Rejected Products will be promptly repaired or replaced,
at  Enphase's  option,  and  returned  freight  pre-paid,  at  the  Supplier’s  expense.  In  the  event  Enphase  chooses  not  to  accept  a  repaired  or  replacement  Product,  then
Supplier will refund the price paid by Enphase for such Product, net fifteen (15) days from Enphase’s written request for refund.

6.2.    Express Warranty. This Section 6.2 sets forth the Supplier's Product warranty and Enphase's remedies with respect to a breach by Supplier of such

Product warranty.

(a)        Supplier  warrants  that  the  Products  will  have  been  manufactured  in  accordance  with  the  applicable  Specifications  and  will  be  free  from  defects  in
materials and workmanship for a period of [*] from the date of delivery of the Product. In addition, Supplier warrants that (A) Production Materials shall be used in
compliance  with  Environmental  Regulations,  (B)  Supplier  will  not  manufacture  Products  using  Materials  from  vendors  that  are  not  on  the  Approved  Vendor  List,
unless otherwise agreed in writing by Enphase.

(b)    Upon any failure of a Product to comply with this express limited warranty, Supplier will, at Enphase’s option, either refund the amount paid for such

Products by Enphase, or promptly repair or replace such unit and return it to Enphase freight prepaid.

6.3.    General Warranties. As on the Effective Date of this Agreement, each Party represents and warrants that: (a) it is a corporation duly incorporated,
validly existing and in good standing under the laws of the state or country in which it was incorporated; (b) it has all necessary corporate power and authority to enter
into  this  Agreement  and  that  the  execution,  delivery  and  the  consummation  of  the  transactions  contemplated  thereby  have  each  been  authorized  by  all  necessary
corporate action and do not violate any judgment, order, or decree; (c) the execution, delivery, performance and consummation of the transactions contemplated by this
Agreement do not and will not constitute a material default under any contract by which it or any of its material assets are bound. The Supplier further represents and
warrants that: (i) it will comply with its obligations under Section 10.9 of this Agreement; (ii) all information provided by the Supplier in any proposal, offer or other
document prior to execution of this Agreement in relation to the subject matter of this Agreement, to the best of Supplier’s knowledge, is true, accurate and complete;
(iii) no claim, litigation, proceeding, arbitration, investigation, or material controversy is pending, has been threatened, or is contemplated which would have a material
adverse  effect  on  the  Supplier’s  ability  to  enter  into  the  Agreement  or  perform  the  Work  and/or  manufacture,  test  or  assemble  the  Products  or  fulfil  any  or  all  its
obligations under this Agreement; (iv) it shall perform the Work with promptness, diligence and in a workmanlike and professional manner, in accordance with the
terms of the Agreement and with the practices and professional standards used in well-managed operations performing services similar to the Work; (iv) it has the
required  personnel  who  are  duly  qualified,  and  are  suitably  trained,  educated,  experienced,  and  skilled  to  perform  the  Work  and  shall  only  deploy  such  trained,
experienced and skilled personnel to provide the Work; (v) that it has obtained and will maintain for the term of this Agreement: (a) ISO 9001:2015 certifaction, (b)
ISO  14001:2015  certification,  and  (c)  ISO  45001:2018  certification,  or  the  latest  industry  standard  equivalent  of  these  certifications,  as  applicable;  and  (vi)  it  is  in
compliance with, and will continue to be in compliance with all applicable Laws.

7.    INTELLECTUAL PROPERTY LICENSES

7.1.    Licenses. Enphase hereby grants Supplier a non-exclusive, limited, revocable, non- transferable, non-sublicensable right and license (unless permitted by

Enphase) during the term of this

Agreement to use Enphase's patents, trade secrets and other intellectual property solely as necessary to perform Supplier's obligations under this Agreement. For the
avoidance of doubt, any such intellectual property will be considered the Confidential Information of Enphase. If and to the extent the Products contains Supplier’s
intellectual property, the Supplier grants to Enphase an unrestricted, perpetual, irrevocable, worldwide, sub-licensable, royalty-free license to such Supplier intellectual
property  to  use,  copy,  modify,  revise,  distribute,  publicly  display,  publicly  perform,  import,  manufacture,  have  made,  sell,  offer  to  sell  (whether  directly  or  through
channels of distribution), to the extent they are needed for Enphase to exercise its rights in the Products. Any such license shall include

Enphase's right to grant an unrestricted, royalty-free license to its Subsidiaries or other affiliates for the purposes stated herein.

7.2.    No Other Licenses. Except as otherwise specifically provided in this Agreement, each Party acknowledges and agrees that no licenses or rights under

any of the intellectual property rights of the other Party are given or intended to be given to such other Party.

8.    TERM AND TERMINATION

8.1.        Term.  The  term  of  this  Agreement  shall  commence  on  the  Effective  Date  and  shall  continue  until  two  (2)  years  from  the  Effective  Date  unless
terminated earlier as provided in Section 8.2 (Termination) or 10.8 (Force Majeure). After the expiration of the initial term hereunder (unless this Agreement has been
terminated), this Agreement shall be automatically renewed for separate but successive one-year terms unless either Party provides written notice to the other Party
that it does not intend to renew this Agreement ninety (90) days or more prior to the end of any term.

8.2.     Termination. This Agreement may be terminated: (a) by Enphase for convenience upon thirty (30) days written notice to the Supplier; (b) by either
Party if the other Party defaults in any payment to the terminating Party and such default continues without a cure for a period of sixty (60) days after the delivery of
written notice thereof by the terminating Party to the other Party; (c) by a Party if the other Party defaults in the performance of any other material term or condition of
this Agreement and such default continues unremedied for a period of thirty (30) days after the delivery of written notice thereof by the terminating Party to the other
Party (d) pursuant to Section 10.8 (Force Majeure); or (e) by a Party if the other Party becomes insolvent, unable to pay debts when due, or the subject of bankruptcy
proceedings not terminated within thirty (30) days of any filing; or makes a general assignment for the benefit of creditors; or if a receiver is appointed for substantially
all of its property.

8.3.        Effect  of  Expiration  or  Termination.  Expiration  or  termination  of  this  Agreement  under  any  of  the  foregoing  provisions:  (a)  shall  not  affect  the
undisputed amounts due under this Agreement by either Party that exist as of the date of expiration or termination, and (b) as of such date the provisions of Sections
5.3, and 5.4 shall apply with respect to payment and shipment to Enphase of finished Products, Inventory, and Special Inventory in existence as of such date, and (c)
shall  not  affect Supplier's express limited  warranty  in  Section  6.2  above.  Upon  termination  of  this  Agreement  in  its  entirety,  for  any  reason,  Supplier  agrees  to:  (i)
return  to  Enphase  all  copies  of  any  Confidential  Information  received  from  Enphase;  and  (ii)  return  to  Enphase,  or  Enphase’s  designee,  all  Enphase  Controlled
Equipment  used  to  perform  the  Work;  Termination  of  this  Agreement,  settling  of  accounts  in  the  manner  set  forth  in  the  foregoing  sentence shall  be  the  exclusive
remedy of the Parties for breach of this Agreement, except for breaches of Section 6, 9.1, 10.1 or a Party’s indemnification obligations under this Agreement. Sections
1, 5.4, 6.2, 6.3, 7, 8, 9, and 10 shall be the only terms that shall survive any termination or expiration of this Agreement.

9.    INDEMNIFICATION; LIABILITY LIMITATION

9.1.    Indemnification by Supplier. Supplier agrees to defend, indemnify and hold harmless, Enphase and all directors, officers, employees, and agents (each,
an  "Enphase  lndemnitee")  from  and  against  all  claims,  actions,  losses,  expenses,  damages  or  other  liabilities,  including  reasonable  attorneys'  fees  (collectively,
"Damages") incurred by or assessed against any of the foregoing:

(a)    any actual or threatened injury or damage to any person or property caused, or alleged to be caused, by a Product sold by Supplier to Enphase hereunder,
but  solely  to  the  extent  such  injury  or  damage  has  been  caused  by  the  breach  by  Supplier  of  its  express  limited  warranties  related  to  Supplier's  workmanship  and
manufacture in accordance with the Specifications only as further set forth in Section 6.2;

(b)    any infringement of the intellectual property rights of any third-party but solely to the extent that such infringement is caused by a process that Supplier
uses to manufacture, assemble and/or test the Products; provided that, Supplier shall not have any obligation to indemnify Enphase if such claim would not have arisen
but for Supplier's manufacture, assembly or test of the Product in accordance with the Specifications; or

(c)    noncompliance with any Environmental Regulations but solely to the extent that such non- compliance is caused by a process or Production Materials that

Supplier uses to manufacture the Products.

9.2.    Sale of Products Enjoined. Should the use of any Products be enjoined for a cause stated in Section 9.l (b) or 9.1 (c) above, or in the event the Supplier

desires to minimize its liabilities under this Section 9, in addition to its indemnification obligations set forth in this Section 9, the Supplier shall either:
(a) substitute a fully equivalent Product or process (as applicable) not subject to such injunction, modify such Product or process (as applicable) so that it no longer is
subject to such injunction; or (b) obtain the right to continue using the enjoined process or Product (as applicable). In the event that any of the foregoing remedies
cannot be effected on commercially reasonable terms, then, all accepted purchase orders and the current forecast will be considered cancelled and Enphase shall have
no obligation to purchase all Products, Inventory and Special Inventory as provided in Sections 5.3 hereof. Any changes to any Products or process must be made in
accordance with Section 2.2 above.

9.3.    No Other Liability. EXCEPT WITH REGARD TO THE SUPPLIER’S INDEMNIFICATION OBLIGATIONS UNDER THIS AGREEMENT,

OR BREACH OF SECTION
10.1  BELOW,  IN  NO  EVENT  SHALL  EITHER  PARTY  BE  LIABLE  TO  THE  OTHER  FOR  ANY  OR  ANY  INCIDENTAL,  CONSEQUENTIAL,
SPECIAL  OR  PUNITIVE  DAMAGES  OF  ANY  KIND  OR  NATURE  ARISING  OUT  OF  THIS  AGREEMENT  OR  THE  SALE  OF  PRODUCTS,
WHETHER  SUCH  LIABILITY  IS  ASSERTED  ON  THE  BASIS  OF  CONTRACT,  TORT  (INCLUDING  THE  POSSIBILITY  OF  NEGLIGENCE  OR
STRICT LIABILITY), OR OTHERWISE, EVEN IF THE PARTY HAS BEEN WARNED OF THE POSSIBILITY OF ANY SUCH LOSS OR DAMAGE,
AND EVEN IF ANY OF THE LIMITED REMEDIES IN THIS AGREEMENT FAIL OF THEIR ESSENTIAL PURPOSE.

10.    MISCELLANEOUS

10.1.    Confidentiality.

(a)    Each Party shall not use any and all Confidential Information of the disclosing Party for any purposes or activities other than those specifically authorized
in  this  Agreement.  Except  as  otherwise  specifically  permitted  herein  or  pursuant  to  written  permission  of  the  Party  to  this  Agreement  owning  the  Confidential
Information, no Party shall disclose or facilitate disclosure of Confidential Information of the

disclosing Party to anyone without the prior written consent of the disclosing Party, except to its employees, consultants, parent company, and subsidiaries of its parent
company who need to know such information for carrying out the activities contemplated by this Agreement and who have agreed in writing to confidentiality terms
that  are  no  less  restrictive  than  the  requirements  of  this  Section.  Notwithstanding  the  foregoing,  the  receiving  Party  may  disclose  Confidential  Information  of  the
disclosing Party pursuant to a subpoena or other court process only (i) after having given the disclosing Party prompt notice of the receiving Party's receipt of such
subpoena or other process and (ii) after the receiving Party has given the disclosing Party a reasonable opportunity to oppose such subpoena or other process or to
obtain a protective order. Confidential Information of the disclosing Party in the custody or control of the receiving Party shall be promptly returned or destroyed upon
the  earlier  of(i)  the  disclosing  Party's  written  request  or  (ii)  termination  of  this  Agreement.  Confidential  Information  disclosed  pursuant  to  this  Agreement  shall  be
maintained confidential for a period of [*] years after the termination of this Agreement. The existence and terms of this Agreement shall be confidential in perpetuity.

(b)    Notwithstanding anything contained in this Section 10.1, a receiving Party may disclose the existence and terms of this Agreement if such information is
required by Law to be disclosed under applicable Law, including without limitation pursuant to the rules and regulations promulgated by the United States Securities
and Exchange Commission, provided that the disclosing party shall request the reduction of confidential terms in any such disclosure.

10.2.    Use of Name is Prohibited. The existence and terms of this Agreement are Confidential Information and protected pursuant to Section 10.1
above. Supplier may not use Enphase's name or identity or any other Confidential Information in any advertising, promotion or other public announcement
without the express prior written consent of Enphase.

10.3.    Entire Agreement; Severability. This Agreement constitutes the entire agreement between the Parties with respect to the transactions contemplated
hereby and supersedes all prior agreements and understandings between the Parties relating to such transactions. If the scope of any of the provisions of this Agreement
is too broad in any respect whatsoever to permit enforcement to its full extent, then such provisions shall be enforced to the maximum extent permitted by Law, and the
Parties hereto consent and agree that such scope may be judicially modified accordingly and that the whole of such provisions of this Agreement shall not thereby fail,
but that the scope of such provisions shall be curtailed only to the extent necessary to conform to Law.

10.4.    Amendments; Waiver. This Agreement may be amended only by written consent of both Parties. The failure by either Party to enforce any provision
of this Agreement will not constitute a waiver of future enforcement of that or any other provision. Neither Party will be deemed to have waived any rights or remedies
hereunder unless such waiver is in writing and signed by a duly authorized representative of the Party against which such waiver is asserted.

10.5.    Independent Contractor. Neither Party shall, for any purpose, be deemed to be an agent of the other Party and the relationship between the Parties
shall only be that of independent contractors. Neither  Party  shall  have  any  right  or  authority  to  assume  or  create  any  obligations  or  to  make  any  representations  or
warranties on behalf of any other Party, whether express or implied, or to bind the other Party in any respect whatsoever. For the avoidance of doubt, any personnel
deployed by the Supplier for performing the Work (“Supplier Personnel”) shall continue to be employees of the Supplier at all times, and shall not, for any purpose, be
considered employees of the and shall not be entitled to any employee benefits from the Supplier including, but not limited to, holiday, vacation, or sick pay, social
security, unemployment or disability insurance,

employees' compensation insurance, health and welfare benefits, profit sharing, or any employee stock option or stock purchase plans. Enphase shall not be liable to
pay any amounts of any nature whatsoever to such resources of the Supplier. The Supplier shall indemnify Enphase in the event any Supplier Personnel make claims
against Enphase in relation to any of the foregoing Enphase employee benefits or if any Supplier Personnel are later reclassified by any court of competent jurisdiction
to be common law employees of Enphase.

10.6.    Expenses. Each Party shall pay their own expenses in connection with the negotiation of this Agreement. All fees and expenses incurred in connection

with the resolution of Disputes shall be allocated as further provided in Section 10.17 below.

10.7.    Insurance. Supplier shall procure and/or maintain at its own expense the following insurance and willusecommercially reasonable effortstodosowithin
sixty (60) days of the Effective Date: (i) commercial general liability insurance (including coverage for bodily injury, personal injury, property damage, contractual
liability, products and completed operations) in an amount not less than [*] per occurrence; (ii) umbrella excess liability insurance in an amount not less than [*]; and
(iii)  an  errors  and  omissions  insurance  policy  which  covers  Supplier's  obligations  hereunder  in  an  amount  not  less  than  [*].  Such  insurance  shall  be  written  by  an
insurance company with a Best's rating of at least A-VIII who is licensed to do business in all states of the United States. Supplier shall furnish certificates of insurance
and  such  other  appropriate  documentation  (including  evidence  of  renewal  of  insurance)  evidencing  all  insurance  coverage's  set  forth  in  this  Section  10.6.  Such
certificates of insurance and other documentation shall name Enphase and its officers, directors and employees as additional insured. Such certificates of insurance and
other documentation shall contain a broad form naming Enphase and its officers, directors and employees as an additional insured. Supplier will provide Enphase with
at least thirty (30) days prior written notice of any cancellation or material alteration of the insurance coverage set forth in this Section 10.6. Failure by Enphase to
receive or request the aforementioned

certificates of insurance and other documentation shall not represent a waiver of the requirements for insurance coverage setforth in this Section 10.7

10.8.    Force Majeure. In the event that either Party is prevented from performing or is unable to perform any of its obligations under this Agreement (other
than a payment obligation) due to any act of God, acts or decrees of governmental or military bodies, fire, casualty, flood, earthquake, war, strike, lockout, epidemic,
destruction  of  production  facilities,  riot,  insurrection,  Materials  unavailability,  or  any  other  cause  beyond  the  reasonable  control  of  the  Party  invoking  this  section
(collectively, a "Force Majeure"), and if such Party shall have used its commercially reasonable efforts to mitigate its effects, such Party shall give prompt written
notice to the other Party, its performance shall be excused , and the time for the performance shall be extended for the period of delay or inability to perform due to such
occurrences. Regardless of the excuse of Force Majeure, if such Party is not able to perform within ninety (90) days after such event, the other Party may terminate the
Agreement.

10.9.    Disaster Recovery and Business Continuity.

The Supplier agrees that it will throughout the duration of this Agreement implement, maintain and keep under regular review a business continuity plan for the Work it
performs for Enphase, so far as is reasonably practicable, adherence to which will enable it to continue to operate in accordance with the Supplier’s obligations under this
Agreement  and  in  accordance  with  any  regulatory  requirements.  The  aforementioned  business  continuity  plan  shall  be  presented  by  the  Supplier  to  Enphase,  for
Enphase’s approval at the beginning of each year during the term of this Agreement, starting with the Effective Date. The Supplier shall amend the business continuity
plan as reasonably requested by Enphase, so as to secure Enphase’s approval on such plan. For the avoidance of doubt, the Supplier will not have satisfied its obligations
under this Section 10.9, if it has

not secured Enphase’s written approval on a business continuity plan.

10.10.    Anti-Corruption and Anti Bribery.

(a)  Vendor  and  each  of  its  shareholders,  beneficial  owners,  affiliates,  officers,  directors,  employees  and  agents  involved  in  providing  services  under  this
Agreement, will comply with the U.S. Foreign Corrupt Practices Act, the UK Bribery Act and the anti-corruption laws of any other applicable jurisdiction. In carrying
out its responsibilities under this Agreement, neither Vendor nor any of its shareholders, beneficial owners, affiliates, officers, directors, employees or agents will offer,
promise or give anything of value, directly or indirectly, to (i) any Government Official in order to influence official action or otherwise obtain an improper advantage,
(ii) any other person with the knowledge that all or any portion of the money or thing of value will be offered or given to a Government Official in order to influence
official  action  or  otherwise  obtain  an  improper  advantage,  or  (iii)  any  other  person  in  order  to  induce  them  to  perform  their  work  duties  disloyally  or  otherwise
improperly. For the purposes of this Section 10.10, a person shall be deemed to have “knowledge” with respect to conduct, circumstances or results if such person is
aware of
(1)    the existence of or (2) a high probability of the existence of such conduct, circumstances or results.

(i)    For the purposes of this Agreement:

a.        “Government  Official”  means  any  public  or  elected  official  or  officer,  employee  (regardless  of  rank),  or  person  acting  on  behalf  of  a  national,
provincial, or local government, including a department, agency, instrumentality, state-owned or state–controlled company, public international organization (such
as  the  United  Nations  or  World  Bank),  or  any  other  Government  Entity,  or  any  political  party,  party  official  or  any  candidate  for  political  office.  Officers,
employees (regardless of rank), or persons acting on behalf of an entity that is financed in large measure through public appropriations, is widely perceived to be
performing government functions, or has its key officers and directors appointed by a government should also be considered Government Officials.

b.    "Government Entity" means a national government, political subdivision thereof, or local jurisdiction therein; an instrumentality, board, commission,
court or agency, whether civilian or military, or any of the above, however constituted; a government-owned or government-controlled association, organization,
business  or  enterprise,  including  any  state-owned  enterprise,  such  as  any  state-owned  broadcaster,  state-owned  airlines,  tourism  boards,  state-owned  (or  part-
owned) banks or an entity that provides a service to its citizens (e.g., a postal office); public international organizations (including organizations whose members
are countries, or territories, governments of countries or territories); and any a political party.

10.11.    Successors, Assignment. This Agreement shall be binding upon and inure to the benefit of the Party hereto and their respective successors, assigns
and legal representatives. Neither Party shall have the right to assign or otherwise transfer its rights or obligations under this Agreement except with the prior written
consent of the other Party, not to be unreasonably withheld.

10.12.        Audits  and  Inventory  count  reports.  Supplier  will  keep  complete  and  accurate  records  of  all  matters  relating  to  its  performance  under  this
Agreement, including Inventory count. In particular, the Supplier shall conduct an internal audit on a quarterly basis, on the Inventory maintained by the Supplier. The
Supplier  shall,  at  Enphase’s  request,  provide  a  report  detailing  the  findings  of  the  aforementioned  internal  audit  to  Enphase.  All  financial  records  relating  to  this
Agreement will be maintained according to local regulation. Supplier will retain all such records for at least five years from the date of creation or longer if required by
applicable Law or by a specific term of this Agreement. Supplier agrees that Enphase may,    

upon  reasonable  advance  notice  and  at  Enphase’s  expense,  audit  and  inspect  such  items  in  order  to  verify  Supplier’s  compliance  with  this  Agreement,  including
Supplier’s documents, records, facilities and Enphase Owned Equipment (each, an “Audit”). If an Audit reveals any overcharges, Supplier will pay to Enphase, within
30  days  of  Supplier’s  receipt  of  notice  thereof  from  Enphase,  (1)  the  amount  of  such  overcharges,  including  interest  thereon  as  provided  in  this  section;  and  (2)
Enphase’s reasonable cost of conducting such Audit. Interest will accrue on any overcharges at the lesser of (1) the prime rate of interest published in the Wall Street
Journal, as same will be published on the day on which the Audit is completed (or, if the prime rate of interest is not published on such date, the next business Day
thereafter on which the prime rate of interest is so published), plus two percent; or (2)

the highest amount allowed by Law. Such interest will accrue from the time such overcharge was paid by Enphase until Supplier repays such overcharge.

10.13.    Notices. All notices required or permitted under this Agreement will be in writing and will be deemed received (a) when delivered personally; (b)

when sent by confirmed facsimile; (c) five (5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid; or (d) one
(1)  day  after  deposit  with  a  commercial  overnight  carrier.  All  communications  will  be  sent  to  the  addresses  set  forth  above  or  to  such  other  address  as  may  be
designated by a Party by giving written notice to the other Party pursuant to this section.

10.14.        Even-Handed  Construction.  The  terms  and  conditions  as  set  forth  in  this  Agreement  have  been  arrived  at  after  mutual  negotiation,  and  it  is  the

intention of the Party that its terms and conditions not be construed against any Party merely because it was prepared by one of the Party.

10.15.    Compliance with Laws. Supplier represents and warrants that the Products are and will be produced and delivered in accordance with all applicable
Laws.  Further,  Supplier  has  implemented  and  maintains  a  comprehensive  program  for  assuring  environmental  compliance  in  its  operations  according  to  recognized
practices, such as ISO 14000 or comparable criteria. Both Parties will adhere to all applicable Laws and regulations governing such Party’s conduct in connection with
this Agreement, including, any laws or regulations of the U.S. Department of Commerce Bureau of Industry and Security, and will not export or re-export any technical
data or products received from a Party, or the direct product of such technical data, to any proscribed country listed in the U.S. Export Administration regulations unless
properly authorized by the U.S. government.

10.16.    Controlling Language. This Agreement is in English only, which language shall be controlling in all respects. All documents exchanged under this

Agreement shall be in English.

10.17.    Controlling Law. This Agreement shall be governed and construed in all respects in accordance with the domestic Laws and regulations of the State of
California, without regard to its conflicts of laws provisions. The courts in Santa Clara County, California will have jurisdiction over any disputes between the Parties,
arising from this Agreement (“Disputes”). The Party specifically agree that the 1980 United Nations Convention on Contracts for the International Sale of Goods, as
may be amended from time to time, shall not apply to this Agreement. The Party further acknowledge and confirm that the selection of the governing law is a material
term of this Agreement.

10.18.    No Waiver. No failure or delay on the part of any Party in exercising any right hereunder, irrespective of the length of time for which such failure or
delay  shall  continue,  will  operate  as  a  waiver  of,  or  impair,  any  such  right.  No  single  or  partial  exercise  of  any  right  hereunder  shall  preclude  any  other  or  further
exercise thereof or the exercise of any other right. No waiver of any right hereunder will be effective unless given in a signed writing.

10.19.    Counterparts. This Agreement may be executed in counterparts.

IN WITNESS WHEREOF, the Party have caused this Agreement to be duly executed by their duly authorized representatives as of the Effective Date.

ENPHASE ENERGY INC.                SALCOMP MANUFACTURING INDIA

By:/S/ Jeff McNeil                    By:/S/ Vincent Hsiao        
Name: Jeff McNeil                    Name:/S/ Vincent Hsiao        
Title: Chief Operating Officer                Title: Chief Executive Officer    
Date: October 1, 2019                    Date:/S/ October 1, 2019

    PRIVATE LTD.

EXHIBIT A
Definitions

Approved Vendor List or AVL    shall mean the list of suppliers currently approved to provide the Materials specified in the BOM or a Product.

Confidential  Information        shall  mean  (a)  the  existence  and  terms  of  this  Agreement  and  all  information  concerning  the  unit  number  and  fees  for  Products  and
Inventory/Special  Inventory,  as  well  as  the  Specifications  and  (b)  any  other  information  that  is  marked
"Confidential" or the like or, if delivered verbally, confirmed in writing to be "Confidential" within 30 days of
the initial disclosure. Confidential Information does not include information that (i) the receiving Party can
prove it already knew at the time of receipt from the disclosing Party; or (ii) has come into the public domain
without breach of confidence by the receiving Party; (iii) was received from a third-party without restrictions
on  its  use;  (iv)  the  receiving  Party  can  prove  it  independently  developed  without  use  of  or  reliance  on  the
disclosing Party's data or information; or (v) the disclosing Party agrees in writing is free of such restrictions

Cost    shall mean the cost represented on the bill of materials supporting the most current fees for Products at the time of cancellation, expiration or termination, as

applicable.

California RoHS    Shall mean the California Electronic Waste Recycling Act of 2003, as amended from time to time, and related interpretive guidance and enforcement

policies

China RoHS    means the People's Republic of China (PRC)'s Measures for the Administration of the Control of Pollution by Electronic Information Products (电子 信息

产品污染控制管理办法 ) promulgated on
February 28, 2006 (including any pre-market certification ("CCC mark") requirements thereunder), the PRC
Ministry  of  Information  Industry's  Frequently  Asked  Questions  regarding  China  RoHS,  official  standards
including Marking for Control of Pollution Caused by Electronic

Information  Products  (SJ/T  11364-2006),  Requirements  for  Concentration  Limits  for  Certain  Hazardous
Substances  in  Electronic  Information  Products  (SJ/T  11363-2006)  and  Testing  Methods  for  Hazardous
Substances  in  Electronic  Information  Products  (SJ/T  11365-2006)  and  the  PRC  General  Administration  of
Quality  Supervision,  Inspection  and  Quarantine's  Circular  441  (2006),  each  as  amended  from  time  to  time,
and related interpretative guidance and enforcement policies.

Defect    Shall mean the failure of a Product to comply with the warranty given in Section 6 and Includes defects of any sub-component or assembly that does not meet

the Specifications for that portion.

Enphase  Controlled  Equipment        shall  mean  those  Equipment  provided  by  Enphase  or  by  third  party  suppliers  with  whom  Enphase  has  a  commercial  contractual

relationship or non- contractual relationship, as further detailed in Exhibit D.

Enphase Indemnitee    shall have the meaning set forth in Section 9.1

Equipment    shall mean those equipment and fixtures required by the Supplier to carry out the Work, in order to manufacture, assemble, and test the Products.

Damages    shall have the meaning set forth in Section 9.1

Economic Order Inventory    shall mean Materials purchased in quantities above the required amount for purchase orders, in order to achieve price targets for such

Materials.

"Engineering Change Order" (ECO)    shall mean the document that details a change in the Specifications and/or design of a Product.

Government Official    shall have the meaning given to it in 10.10 (a).

Government Entity    shall have the meaning given to it in 10.10 (b).

Disputes    shall have the meaning set forth in Section 10.l7.

Environmental  Regulations        shall  mean  any  hazardous  substance  content  laws  and  regulations  including,  without  limitation,  those  related  to  the  EU  Directive

2002/95/EC about the Restriction of Use of Hazardous

Fee List    shall have the meaning set forth in Section 3.4 (a).

Substances (RoHS), the Directive 2012/19/EU of the European Parliament and of the Council of 27 January
2003 on Waste Electrical and Electronic Equipment (WEEE), 2003 O.J. (L37) 24 as amended from time to
time, and includes the WEEE Requirements.

Force Majeure    shall have the meaning set forth in Section 10.8.

Inventory    shall mean any Materials that are used to manufacture Products that are ordered pursuant to a purchase order from Enphase.

Lead Time(s)    shall mean the Materials Procurement Lead Time plus the manufacturing cycle time required from the delivery of the Materials at the Supplier's facility to

the completion of the manufacture, assembly and test processes.

Long Lead Time Materials    shall mean Materials with Lead Times exceeding the period covered by the accepted purchase orders for the Products.

Laws    means any U.S. or non-U.S. federal, national, supranational, state, provincial, local or similar statute, law (including common law), Environmental Regulations,
regulation, treaty, constitutional provision, ordinance, code, directive, including the (RoHS Directive and the
WEEE  Requirements  and  the  RoHS  Requirements)  notice,  binding  agreement,  policy  or  rule  of  law,  legal
requirement,  other  government  restriction  or  regulation  promulgated  or  entered  into  by  any  regulatory
authority of competent jurisdiction, tribunal, judicial or arbitral body, administrative agency or commission or
other government authority or instrumentality.

Materials    shall mean components, parts and subassemblies that comprise the

Materials Procurement Lead time    shall mean with respect to any particular item of Materials, Lead time to obtain such Materials as recorded in the purchase order.

Product and that appear on the BOM for the Product.

Minimum Order Inventory    shall mean Materials purchased in excess of requirements for purchase orders because of minimum lot sizes available from the third-party

Product(s)    shall have the meaning set forth in Section 2.1.

supplier.

Production Materials    shall mean Materials that are consumed in the production processes to manufacture Products including without limitation, solder, epoxy, cleaner

solvent, labels, flux, and glue.

RoHS  Requirements        means  the  RoHS  Directive,  China  RoHS,  California  RoHS  and/or  other  similar  or  related  environmental,  product  composition  or  materials

declaration Laws.

Subsidiary    shall mean the corporations, partnerships, limited liability companies, joint ventures, associations and any other legal entities of which any Party (either
alone or through or together with any other Subsidiary), owns, directly or indirectly, or has rights to acquire,
directly  or  indirectly  more  than  50  percent  of  the  stock  or  other  equity  interests,  the  holders  of  which  are
generally  entitled  to  vote  for  the  election  of  the  board  of  directors  or  other  governing  body  of  such
corporation or other legal entity.

Supplier Controlled Equipment    shall mean those Equipment provided by the Supplier.

Special Inventory    shall mean any Long Lead Time Materials and/or Minimum Order Inventory and/or Economic Order Inventory.

Specifications    shall have the meaning set forth in Section 2.1.

Work    shall have the meaning set forth in Section 2.1.

WEEE Requirements    means any requirements, obligations, standards, duties or responsibilities pursuant to any environmental, product or packaging recycling, reuse or
waste  Laws  and  any  regulations,  interpretive  guidance  or  enforcement  policies  relating  to  any  of  the
foregoing, including the WEEE directive, California RoHS or other similar or related Laws.

The  Supplier  shall  perform  the  Work  to  the  satisfaction  of  Enphase,  according  to  the  Specifications  listed  in  the  relevant  document,  as  outlined  in  the  table
below. Enphase reserves the right to update this table from time to time and shall notify the Supplier thirty (30) days in advance of such updates, and upon such
notification, these Specifications will be deemed to be updated.

Products (as applicable)

Document

Document Number

Revision Number

EXHIBIT B
SPECIFICATIONS

[*]

[*]

[*]

[*]

[*]

[*]

[*]

[*]

[*]

[*]

[*]

[*]

[ *]

[*]

QUOTATION -- MVA Cost Elements & Material Costs;     

EXHIBIT C
FEES LIST

MVA Cost
Elements/Manufacturing
Locations/Volume Scenario

Package Deal -- All programs to be awarded

Microinverter

Envoy

Combiner Box

Enpower (#11)

Chennai

Chennai

Chennai

Chennai

[*]pcs/Quarter

[*]pcs/Quarter

[*]pcs/Quarter

[*]Kpcs/Quarter

Remark

Raw Material Inbound Freight

Finished-Good Outbound Freight

Process Consumables

Direct Labors

Indirect Labors

Depreciation

Factory OverHead

SGA & Profit

$

$

$

$

$

$

$

$

Costed-BOM $ [*] $ [*] $ [*] $ [*] CBOM info
release by Enphase; Overall Production Yield Loss
[*] [*] [*] TBD Yeild Loss & % to be agreed;

Costed-BOM $ [*] $ [*] $ [*] $ [*] CBOM info
release by Enphase; Overall Production Yield Loss
[*] [*] [*] TBD Yeild Loss & % to be agreed;

[*]

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[*]

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[*]

[*]

[*]

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Costed-
BOM $ [*]
$ [*] $ [*] $
[*] CBOM
info
release by
Enphase;
Overall
Production
Yield Loss
[*] [*] [*]
TBD Yeild
Loss & %
to be
agreed;
Costed-BOM

$

$

$

$

$

$

$

$

[*]

[*]

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[*]

$

$

$

$

$

$

$

$

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$

$

$

$

$

$

$

$

[*]

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[*]

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[*]

Costed-BOM

$ [*

$ [*

$ [*

$ [*

CBOM info release by
Enph

Overall
Production
Yield L

[*]

[*]

[*]

TBD

Yeild Loss & % to be ag

$ [*

$ [*

$ [*

$ [*

Overall Production
Yield L

CBOM
info
release
by
Enph

[*]

[*]

[*]

TBD

Yeild
Loss &
% to be
ag

Costed-BOM

$ [*

$ [*

$ [*

$ [*

[*]

[*]

[*]

TBD

Overall Production Yield L

TotalTotal
Total

MVA per Unit (US$) $MVA per Unit (US$) $
MVA per Unit (US$) $

Total MVA per Unit (US$) $

[*]$

[*]$

[*]$
[*]

CBOM
info
release
by
Enph
Yeild
Loss & %
to be ag

Total Material Costs per Unit

Unit Pricing (MVA + Materials)

(US$) $    [*]

$    [*]

$    [*]

$    [*]

$    [*]

$    [*]

$    [*]

$    [*]

The extra cost of embedded FG Outbound Freight Cost (Line#18) to ship FG to different locations

US, Oakland California

$    [*]

$    [*]

$    [*]

Netherlands, Rotterdam

$    [*]

$    [*]

$    [*]

$    [*]

$    [*]

[*]

[*]

NOTES

[*]     

EXHIBIT D
ENPHASE CONTROLLED EQUIPMENT

[*]

'

EXHIBIT E
SUPPLIER CONTROLLED EQUIPMENT

[*]

March 17, 2020 Enphase Energy, Inc. 47281 Bayside Parkway Fremont, CA 94538 Dear Sir or Madam: This letter of amendment (“Letter Agreement”) when executed shall serve as an agreement modifying that certain Lease dated April 12, 2018, by and between Dollinger Bayside Associates, a California limited partnership (the “Landlord”) and Enphase Energy, Inc., (the “Tenant”), relating to the Premises at 47281 Bayside Parkway, Fremont, CA (the “Lease”). Capitalized terms not otherwise defined herein shall have the meaning ascribed to them in the Lease. IT IS AGREED THAT: 1) Effective upon full execution of this Letter Agreement, the Original Term of the Lease shall be extended for five (5) years, commencing October 1, 2020 and expiring September 30, 2025. 2) Effective October 1, 2020, the Premises shall be adjusted to include an additional 17,010 square feet known as 47341 Bayside Parkway, Fremont, CA 94538 (such additional area being the “Expansion Premises”), for a total of 40,446 square feet (the “Combined Premises”). Effective October 1, 2020 the “Expansion Premises” Rent schedule shall commence as shown below. 3) Effective October 1, 2020 and until September 30, 2021, the Base Rent for Expansion Premises shall be $29,768.00 per month. 4) Effective October 1, 2021 and until September 30, 2022, the Base Rent for Expansion Premises shall be $30,661.00 per month. 5) Effective October 1, 2022 and until September 30, 2023, the Base Rent for Expansion Premises shall be $31,581.00 per month. 6) Effective October 1, 2023 and until September 30, 2024, the Base Rent for Expansion Premises shall be $32,528.00 per month. 7) Effective October 1, 2024 and until September 30, 2025, the Base Rent for Expansion Premises shall be $33,504.00 per month. 8) Base Rent for the original “Premises” (as defined in the Lease) will remain per the current Lease until November 30, 2023. Effective December 1, 2023 the “Original
Premises” Base Rent schedule shall adjust as shown below. 9) Effective December 1, 2023 until November 30, 2024, the Base Rent for Original Premises shall be $44,763.00 per month. 10) Effective September 1, 2024 until November 30, 2025, the Base Rent for Original Premises shall be $46,106.00 per month. 11) Tenant shall remit an additional Security Deposit of $33,504.00, bringing the total Security Deposit amount (for the purposes of Paragraphs 1.7 and 5 of the Lease) to $72,898.68. (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0)  (cid:0)  

 
DOLLINGER PROPERTIES - - - - - - - Exhibit "A" ·... (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0) (cid:0)  (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0) (cid:0)  (cid:0)  

 
 
 
[*] = Certain confidential information contained in this document, marked by brackets, has been omitted because it is both not
material and would likely cause competitive harm to the Company if publicly disclosed.

Execution Version

This EXCHANGE AGREEMENT (this “Agreement”) is made and entered into as of December 14, 2020 by and between Enphase Energy, Inc., a Delaware corporation
(the  “Company”),  and  Linden  Advisors  LP  (the  “Undersigned”),  for  itself  and  on  behalf  of  the  beneficial  owners  listed  on  Exhibit  A  hereto  (“Accounts”)  for  whom  the
Undersigned holds contractual and investment authority (each Account, hereunder, a “Noteholder” and, collectively, the “Noteholders”).

EXCHANGE AGREEMENT

RECITALS

WHEREAS, the Company previously issued $132.0 million aggregate principal amount of its 1.00% Convertible Senior Notes due 2024 (the “Notes”);

WHEREAS, each Noteholder is the beneficial and record holder of the aggregate principal amount of the Notes (the “Exchanged Notes”) set forth in Exhibit A, which
Exchanged  Notes  were  issued  pursuant  to  that  certain  Indenture,  dated  as  of  June  5,  2019  (the  “Indenture”),  between  the  Company  and  U.S.  Bank  National  Association,  as
trustee (the “Trustee”);

WHEREAS,  the  Company  and  the  Undersigned  (on  behalf  of  the  Noteholders)  have  agreed  to  enter  into  this  Agreement  pursuant  to  which:  each  Noteholder  will
exchange (the “Exchange”) its Exchanged Notes for (a) such number of shares of the Company’s common stock, $0.00001 par value per share (the “Common Stock”), and (b)
cash  in  U.S.  dollars  (the  “Exchange Payment”)  as  set  forth  in  Exhibit  A,  which  amounts  will  be  calculated  based  on  a  one-day  VWAP  of  the  Common  Stock  on  the  date
following the date of this Agreement,; and

WHEREAS, the transactions under this Agreement have been privately and separately negotiated and agreed to between the Company and the Undersigned (on behalf of
the Noteholders); and the Exchange is being made in reliance upon the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended (the
“Securities Act”).

NOW,  THEREFORE,  in  consideration  of  the  mutual  covenants  and  agreements  contained  herein  and  for  other  good  and  valuable  consideration,  the  receipt  and

sufficiency of which is hereby acknowledged, the parties hereto agree as follows:

1.    Exchange and Purchase. Subject to the terms and conditions set forth in this Agreement, at the Closing (as defined herein), the Noteholder will assign, transfer and

deliver to the

AGREEMENT

Company  all  of  its  right,  title  and  interest  in  and  to  all  of  the  Exchanged  Notes  set  forth  in  Exhibit  A  free  and  clear  of  any  mortgage,  lien,  pledge,  charge,  security  interest,
encumbrance, option, or other adverse claim thereto (a “Lien”), against issuance and delivery, or payment, to the Noteholder, which shall be in full satisfaction of all obligations
of the Company under the Exchanged Notes, of (i) the number of shares of Common Stock (the “Exchanged Shares”), and (ii) the Exchange Payment, each as to be set forth in
an  updated  Exhibit  A  as  mutually  agreed  between  the  Company  and  the  Undersigned  by  the  end  of  the  business  day  immediately  following  the  date  of  this  Agreement.  The
Exchange Payment will consist of $1,000 in cash for each $1,000 principal amount of Exchanged Notes, plus an amount equal to the value of any fractional shares as described
below. The number of Exchanged Shares will be equal to (a) the number of shares of Common Stock deliverable to the Noteholders if the Exchanged Notes were converted based
on a conversion ratio of 48.7781 per $1,000 principal amount of Exchanged Notes, minus (b) the number of shares of Common Stock derived by dividing the principal amount of
the Exchanged Notes by the VWAP (defined below). Any fractional shares resulting from the calculation in the previous sentence will be paid in cash, based on such VWAP, and
will be added to the Exchange Payment. For purposes of this paragraph, the “VWAP”
will equal the Composite VWAP of the Common Stock on Bloomberg (ENPH US  AQR) from 9:30AM to 4:00PM EST on the day following the date of this Agreement.

2.        Closing  and  Closing  Deliveries.  The  closing  of  the  Exchange  (the  “Closing”)  shall  take  place  remotely  at  10:00  a.m.,  New  York  time,  on  December  16,  2020
following the satisfaction or, to the extent permitted by applicable law, waiver of the conditions set forth in Section 6 below (other than those conditions that by their terms are to
be satisfied at the Closing, but subject to the satisfaction or, to the extent permitted by applicable law, waiver of those conditions), unless another date, time or place is agreed to in
writing by the parties hereto (the “Closing Date”).

3.    At the Closing:

(a)    the Company shall:

(i)    deliver the Exchange Shares, bearing an unrestricted CUSIP number, to the Noteholders’ custodians as identified in Exhibit B hereto, through the

facilities of DTC free and clear of any Liens; and

(ii)    pay the Cash Payment to the Noteholders, by wire transfer of immediately available funds to such account or accounts as designated in Exhibit B.

(b)    the Noteholders shall:

(i)    effect by book entry, in accordance with the applicable procedures of The Depository Trust Company, the delivery to the Company (or its trustee or
designee) of all of the Exchanged Notes and all other documents and instruments reasonably requested by the Company or the Trustee to effect the transfer of the
Exchanged Notes to the Company and confirm in the Company all right, title and interest in and to the Exchanged Notes free and clear of any Liens.

4.    Representations and Warranties of the Noteholder. The Undersigned, for itself and on behalf of each Noteholder, represents and warrants to the Company as follows:

(a)    Title to Exchanged Notes and Holding Period. Each Noteholder is the sole legal and beneficial owner of the Exchanged Notes set forth on Exhibit A and for
purposes of Rule 144(d) under the Securities Act, such Noteholder has either (i) held the Exchanged Notes for at least one (1) year, or will satisfy such holding period requirement
as of the Closing, or (ii) acquired the Exchanged Notes from a person who was not and has not been in the ninety (90) days prior to the sale, an Affiliate of the Company (as
defined herein) and, as a result of tacking the holding period of prior non-Affiliate purchasers, has held the Exchanged Notes for at least one (1) year, or will satisfy such holding
period requirement at Closing. Each Noteholder has good, valid and marketable title to the Exchanged Notes set forth on Exhibit A free and clear of all Liens, and neither such
Noteholder nor any Affiliate of such Noteholder owns or holds beneficially or of record any Notes (or any rights or interests of any nature whatsoever in or with respect to any
Notes) other than Exchanged Notes set forth on Exhibit A. At the Closing, each Noteholder will convey to the Company good and marketable title to the Exchanged Notes free
and clear of all Liens. Except for this Agreement, none of the Noteholders is party to or bound by any contract, option or other arrangement or understanding with respect to the
purchase, sale, delivery, transfer, gift, pledge, hypothecation, encumbrance, assignment or other disposition or acquisition of (including by operation of law) any Notes (or any
rights or interests of any nature whatsoever in or with respect to any Notes) or as to voting, agreeing or consenting (or abstaining therefrom) with respect to any amendment to or
waiver of any terms of, or taking any action whatsoever with respect to, the Notes and/or the Indentures.

(b)     Existence; Authority; Binding Effect . The Undersigned and each Noteholder is duly incorporated or organized, validly existing and in good standing under
the  laws  of  its  jurisdiction  of  organization.  The  Undersigned  has  full  legal  capacity,  power  and  authority  to  execute  and  deliver  this  Agreement,  and  any  other  agreements  or
instruments  executed  or  to  be  executed  by  it  in  connection  herewith  and  to  consummate  the  transactions  contemplated  herein  and  therein.  The  execution,  delivery  and
performance  by  the  Undersigned  and  each  of  the  Noteholders  of  this  Agreement  and  any  other  agreements  or  instruments  executed  or  to  be  executed  and  delivered  by  the
Undersigned or any of the Noteholders in connection herewith, and the consummation of the transactions contemplated hereby and thereby by the Undersigned and any of the
Noteholders, have been duly and validly authorized and approved by the board of directors or other governing body of the Undersigned (for itself and in connection with the
authority  granted  to  the  Undersigned  by  each  Noteholder),  and  no  other  actions  on  the  part  of  the  Undersigned  or  any  of  the  Noteholders  (including  any  notices,  filings  or
consents)  are  necessary  in  respect  thereof.  This  Agreement  has  been  duly  executed  and  delivered  by  the  Undersigned,  and  this  Agreement  is,  and  the  other  agreements  and
instruments executed hereunder by the Undersigned in connection herewith will be, a valid and binding obligation of the Undersigned and each of the Noteholders, in each case,
to the extent party thereto, enforceable in accordance with its respective terms, except as enforcement thereof may be limited by bankruptcy, insolvency, reorganization, fraudulent
conveyance, moratorium or other similar laws relating to or affecting enforcement of creditors’ rights generally and except as enforcement thereof is subject to general principles
of equity (regardless of whether enforcement is considered in a proceeding in equity or at law) (collectively, the “Enforceability Exceptions”).

(c)    No Violation. None of the execution and delivery of this Agreement, or any other agreements or instruments executed and delivered by the Undersigned or
the Noteholders in connection herewith, nor the performance of any obligations hereunder or thereunder by the Undersigned or the Noteholders, including the exchange of the
Exchanged Notes pursuant to this Agreement, will conflict with, or result in any violation of, or default (with or without notice or lapse of time, or both) under or result in the
creation of any Lien upon the Exchanged Notes held by the Noteholders under (i) the organizational documents of each such Noteholder, including any certificate

of formation, limited partnership agreement or similar agreement; (ii) any law, regulation, order, writ, injunction or decree applicable to the Noteholders or by which any property
or  asset  of  the  Noteholders  is  bound  or  affected;  or  (iii)  any  note,  bond,  mortgage,  indenture,  contract,  agreement,  lease,  license,  permit,  franchise,  or  other  instrument  or
obligation to which such Noteholders are a party or by which the Noteholders or any property or asset of the Noteholders are bound or affected.

(d)    Consents and Approvals. No consent, approval, order or authorization of, or registration, declaration, filing with or notice to, any governmental entity or any
other person is required to be obtained, made or given by or with respect to the Undersigned or any of the Noteholders in connection with the execution and delivery of this
Agreement or other agreements or instruments executed and delivered hereunder or thereunder by the Undersigned or the Noteholders, or the performance of any obligations
hereunder or thereunder by the Undersigned or the Noteholders, including the Exchange.

(e)    No Affiliate Status. Neither the Undersigned nor any of the Noteholders are, and have not been during the consecutive three-month period preceding the date
hereof, a director, officer or “affiliate” within the meaning of Rule 144 promulgated under the Securities Act (an “Affiliate”) of the Company. The Noteholders did not acquire the
Exchanged Note, directly or indirectly, from an Affiliate of the Company. The Noteholders and their Affiliates collectively beneficially own and will beneficially own as of the
Closing Date (but without giving effect to the Exchange) (i) less than 5% of the outstanding Common Stock and (ii) less than 5% of the aggregate number of votes that may be
cast by holders of those outstanding securities of the Company that entitle the holders thereof to vote generally on all matters submitted to the Company’s stockholders for a vote
(the “Voting Power”). Immediately after the receipt by the Noteholders of the Exchanged Shares in the Exchange, the aggregate number of shares of Common Stock owned by
the Noteholders and their Affiliates, together with the aggregate number of shares equal to
the notional value of any “long” derivative transaction relating to such Common Stock to which the Noteholders or their Affiliate are a party (excluding derivative transactions
relating to broad based indices), will not exceed 4.9% of the outstanding Common Stock. The Undersigned and the Noteholders are not a subsidiary, Affiliate or, to its knowledge,
otherwise closely-related to any director or officer of the Company or beneficial owner of 5% or more of the outstanding Common Stock or Voting Power (each such director,
officer or beneficial owner, a “Related Party”). To its knowledge, no Related Party beneficially owns 5% or more of the outstanding voting equity, or votes entitled to be cast by
the outstanding voting equity, of the Undersigned or any of the Noteholders.

(f)        Qualified  Institutional  Buyer.  Each  Noteholder  is  an  “accredited  investor”  within  the  meaning  of  Rule  501(a)  of  Regulation  D  promulgated  under  the
Securities Act, and a “qualified institutional buyer” within the meaning of Rule 144A promulgated under the Securities Act and is acquiring the Common Stock hereunder for
investment  for  its  own  respective  account  and  not  with  a  view  to,  or  for  resale  in  connection  with,  any  distribution  thereof  in  a  manner  that  would  violate  the  registration
requirements of the Securities Act.

(g)    Adequate Information; No Reliance. The Undersigned and each Noteholder acknowledges and agrees that (i) it has access to (including through the EDGAR
system)  and  has  reviewed  the  Company’s  reports  filed  with  the  Securities  and  Exchange  Commission,  including  the  “risk  factors”  contained  in  such  reports,  and  it  has  been
furnished with all materials it considers relevant to making an investment decision to enter into the Exchange and has had the opportunity to review the Company’s filings and
submissions with the Securities and Exchange Commission,

including, without limitation, all information filed or furnished pursuant to the Exchange Act, (ii) it has had a full opportunity to ask questions of and receive answers from the
officers of the Company concerning the Company, its business, operations, financial performance, financial condition and prospects, and the terms and conditions of the Exchange
and its investment in the Exchanged Shares, (iii) such Noteholder, together with its professional advisers, is a sophisticated and experienced investor and is capable of evaluating,
to its satisfaction, the accounting, tax, financial, legal and other risks associated with the Exchange and its investment in the Exchanged Shares, and that such Noteholder has had
the opportunity to consult with its accounting, tax, financial and legal advisors to be able to evaluate the risks involved in the Exchange and its investment in the Exchanged
Shares and to make an informed investment decision with respect to such Exchange and investment in the Exchanged Shares, and that such Noteholder is capable of sustaining
any loss resulting therefrom without material injury, (iv) it understands that no federal or state agency has passed upon the merits or risks of an investment in the Common Stock
or  made  any  finding  or  determination  concerning  the  fairness  or  advisability  of  its  investment  in  the  Exchanged  Shares  or  the  Exchange,  and  none  of  the  Company  or  its
representatives or Affiliates is acting as a fiduciary or financial or investment advisor to such Noteholder, (v) it is not relying, and has not relied, upon any statement, advice
(whether accounting, tax, financial, legal or other), representation or warranty made by the Company or any of its Affiliates or representatives, except for the representations and
warranties made by the Company in this Agreement, (vi) no statement or written material contrary to this Agreement has been made or given to such Noteholder by or on behalf
of  the  Company  and  (vii)  such  Noteholder  has  such  knowledge  and  experience  in  financial  and  business  matters  as  to  be  capable  of  evaluating  the  merits  and  risks  of  the
prospective investment in the Exchanged Shares and has the ability to bear the economic risks of its investment and can afford the complete loss of such investment.

The Undersigned and each Noteholder also specifically acknowledges that the Company would not enter into this Agreement or any related documents in
the absence of the Undersigned’s and each Noteholder’s representations and acknowledgments set out in this Agreement, and that this Agreement, including such representations
and acknowledgments, are a fundamental inducement to the Company, and a substantial portion of the consideration provided by the Undersigned and each Noteholder, in this
transaction, and that the Company would not enter into this transaction but for this inducement.

The  Undersigned  agrees  that  it  shall  and  it  shall  cause  each  Noteholder  to,  upon  request,  execute  and  deliver  any  additional  documents  reasonably

deemed by the Company, the Trustee or the transfer agent for the Common Stock to be necessary or desirable to complete the Exchange.

(h)    Tax Consequences of the Exchange. The Undersigned and each Noteholder understands that the tax consequences of the Exchange will depend in part on its
own tax circumstances. The Undersigned and each Noteholder acknowledges that it must consult its own tax adviser about the federal, foreign, state and local tax consequences
peculiar to its circumstances. On or prior to the Closing, the Undersigned, on behalf of each Noteholder, shall deliver to the Company completed IRS Forms W-9 or W-8, as
applicable, with regards to each such Noteholder. The Undersigned and Noteholder acknowledges that it has not relied on and will not rely on the Company with respect to any
tax consequences related to the Exchange. The Undersigned and each Noteholder assumes full responsibility for all such consequences and for the preparation and filing of any
tax returns and elections which may or must be filed in connection with its beneficial ownership of the Exchanged Notes, the Exchanged Shares or the Exchange.

(i)    Proceedings. Neither the Undersigned nor any of the Noteholders know of any proceedings relating to the Exchanged Notes or the Exchange that are pending

or threatened before any court, arbitrator or administrative or governmental body that would adversely affect the completion of the Exchange.

(j)    Full Satisfaction of Obligations. The Undersigned and each Noteholder acknowledges that upon the issuance of the Exchanged Shares and the payment of

the Cash Payment, the obligations of the Company to the Undersigned and the Noteholders under the Exchanged Notes shall have been satisfied in full.

(k)     No Broker’s Fees. The Undersigned and the Noteholders have not incurred nor become liable for any broker’s commissions or finder’s fee relating to the

transactions contemplated by this Agreement.

5.    Representations and Warranties of the Company. The Company represents and warrants to the Undersigned and each of the Noteholders as follows:

(a)     Existence; Authority; Binding Effect . The Company is (i) duly incorporated, validly existing and in good standing under the laws of its jurisdiction of
organization and has full power and authority to own, lease and operate its properties and to carry on its business as it is now being conducted and (ii) duly qualified or licensed as
a foreign corporation to do business, and is in good standing, in each jurisdiction where the character of the properties owned, leased or operated by it or the nature of its business
makes such qualification or licensing necessary, except for any such failures to be so qualified or licensed and in good standing as that, individually or in the aggregate, have not
had and would not reasonably be expected to have a material adverse effect on the Company and its subsidiaries, taken as a whole. The execution and delivery of this Agreement
and any other agreements or instruments executed or to be executed and delivered in connection herewith, and the consummation of the transactions contemplated hereby and
thereby, by the Company, including the issuance and delivery of the Exchanged Shares to the Noteholder pursuant to this Agreement, have been duly and validly authorized and
approved by all necessary corporate actions of the Company and no other actions on the part of the Company are necessary in respect thereof other than those that will be taken
prior to the Closing. This Agreement is, and each agreement and instrument executed hereunder by the Company in connection herewith will be, a valid and binding obligation of
the Company, enforceable in accordance with its respective terms, except as enforcement thereof may be limited by the Enforceability Exceptions.

(b)    No Violation. None of the execution, delivery or performance of this Agreement and each of the other agreements or instruments executed and delivered by
the Company in connection herewith, will conflict with, or result in any violation of, or default (with or without notice or lapse of time, or both) under or give rise to a right of
termination, cancellation, modification or acceleration of any obligation or to a loss of a benefit under, or result in the creation of any lien upon any of the properties or assets of
the  Company  under  (i)  the  certificate  of  incorporation,  bylaws  or  similar  organizational  documents  of  the  Company;  (ii)  any  law,  regulation,  order,  writ,  injunction  or  decree
applicable to the Company or by which any property or asset of the Company is bound or affected; or (iii) any note, bond, mortgage, indenture, contract, agreement, lease, license,
permit, franchise, or other instrument or obligation to which the Company is a party or by which the Company or any property or asset of the Company is bound or affected,
except, in the case of clause (ii) or (iii) above, for any such conflict, violation or default that would not be reasonably expected to have a material adverse effect on the Company
and its subsidiaries, taken as a whole.

(c)    Consents and Approvals. No consent, approval, order or authorization of, or registration, declaration, filing with or notice to, any governmental entity or any
other person is required to be obtained, made or given by or with respect to the Company in connection with the execution and delivery of this Agreement or other agreements or
instruments  executed  and  delivered  hereunder  or  thereunder  by  the  Company,  or  the  performance  of  any  obligations  hereunder  or  thereunder  by  the  Company,  including  the
Exchange, other than those that will be obtained prior to Closing and other than such filings or notices that will be made by the Company in accordance with applicable deadline
requirements.

(d)        Valid  Issuance  of  the  Common  Stock.  The  Exchanged  Shares  (i)  have  been  duly  authorized  and,  upon  their  issuance  pursuant  to  the  Exchange  against
delivery  of  the  Exchanged  Notes,  will  be  validly  issued,  fully  paid  and  non-assessable,  (ii)  will  not,  at  the  Closing,  be  subject  to  any  preemptive,  participation,  rights  of  first
refusal  or  other  similar  rights,  (iii)  assuming  the  accuracy  of  the  Noteholder’s  representations  and  warranties  hereunder,  will  be  issued  in  the  Exchange  exempt  from  the
registration  requirements  of  the  Securities  Act  pursuant  to  Section  4(a)(2)  of  the  Securities  Act,  and  (iv)  will  be  issued  without  any  legends  that  restrict  the  transfer  of  such
Exchange Shares under the U.S. federal securities laws. Upon delivery of such Exchange Shares to the Noteholders pursuant to this Agreement, such Exchange Shares shall be
free and clear of all Liens created by the Company.

(e)     No Broker’s Fees . The Company has not incurred nor become liable for any broker’s commissions or finder’s fee relating to the transactions contemplated

by this Agreement.

6.    Conditions to Closing. The obligation of each party to effect the Exchange, and to execute and deliver documents, at the Closing is subject to the satisfaction at or

prior to the Closing of the following conditions:

(a)    the representations and warranties of the Noteholders contained in Section 4 hereof shall be true and correct in all respects as of the date of this Agreement

and as of the Closing, with the same force and effect as though made on and as of such date; and

(b)    the representations and warranties of the Company contained in Section 5 hereof shall be true and correct in all respects as of the date of this Agreement and

as of the Closing, with the same force and effect as though made on and as of such date.

7.    Miscellaneous.

(a)        Entire  Agreement.  This  Agreement  and  any  documents  and  agreements  executed  in  connection  with  the  Exchange  embody  the  entire  agreement  and

understanding of the parties hereto with respect to the subject matter hereof and supersede all prior and contemporaneous oral or written agreements,
representations,  warranties,  contracts,  correspondence,  conversations,  memoranda  and  understandings  between  or  among  the  parties  or  any  of  their  agents,  representatives  or
Affiliates relative to such subject matter, including, without limitation, any term sheets, emails or draft documents.

(b)        Amendments  and  Waivers.  Amendments  or  modifications  to  this  Agreement  may  only  be  made,  and  compliance  with  any  term,  covenant,  agreement,

condition or provision set

forth herein may only be omitted or waived (either generally or in a particular instance and either retroactively or prospectively), upon the written consent of each party hereto.

(c)    Construction. References in the singular shall include the plural, and vice versa, unless the context otherwise requires. References in the masculine shall
include the feminine and neuter, and vice versa, unless the context otherwise requires. Headings in this Agreement are for convenience of reference only and shall not limit or
otherwise affect the meanings of the provisions hereof. Neither party, nor its respective counsel, shall be deemed the drafter of this Agreement for purposes of construing the
provisions of this Agreement, and all language in all parts of this Agreement shall be construed in accordance with its fair meaning, and not strictly for or against either party.

(d)    Costs and Expenses. The Noteholders and the Company shall each pay their own respective costs and expenses incurred in connection with the negotiation,

preparation, execution and performance of this Agreement, including, but not limited to, attorneys’ fees.

(e)        Governing Law.  This  Agreement  shall  in  all  respects  be  construed  in  accordance  with  and  governed  by  the  substantive  laws  of  the  State  of  New  York,
without reference to any choice of law rules (whether of the State of New York or any other jurisdictions) to the extent such rules would cause the application of the laws of any
jurisdictions other than the State of New York. Each party hereby irrevocably submits to the jurisdiction of the state and federal courts sitting in The City of New York, Borough
of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably
waives,  and  agrees  not  to  assert  in  any  suit,  action  or  proceeding,  any  claim  that  it  is  not  personally  subject  to  the  jurisdiction  of  any  such  court,  that  such  suit,  action  or
proceeding is brought in an inconvenient forum or that the venue of such suit, action or proceeding is improper. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY
RIGHT  IT  MAY  HAVE,  AND  AGREES  NOT  TO  REQUEST,  A  JURY  TRIAL  FOR  THE  ADJUDICATION  OF  ANY  DISPUTE  HEREUNDER  OR  IN
CONNECTION WITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION CONTEMPLATED HEREBY.

(f)    Counterparts. This Agreement may be executed in counterparts, each of which shall be deemed an original, but all of which taken together shall constitute
one and the same instrument. Any counterpart or other signature hereon delivered by email shall be deemed for all purposes as constituting good and valid execution and delivery
of this Agreement by such party.

(g)    Further Assurances. Each party hereto shall do and perform, or cause to be done and performed, all such further acts and things, and shall execute and
deliver all such other agreements, certificates, instruments and documents, as any other party hereto may reasonably request in order to carry out the intent and accomplish the
purposes of this Agreement and the consummation of the transactions contemplated hereby.

[Signature Page Follows]

DocuSign Envelope ID: 5F2069CD-FADD-47AA-8795-824C667D6A12

IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to be executed as of the date first above written.

ENPHASE ENERGY, INC.

By: /S/ Eric Branderiz    

Eric Branderiz

Name:     

Chief Financial Officer

Title:     

Signature Page to Exchange Agreement

IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to be executed as of the date first above written.

"Undersigned"
LINDEN ADVISORS LP

By: Linden Advisors LP, in its capacities described
in the first paragraph hereof

By: /S/ Saul Ahn    

Saul Ahn

Name:     

General Counsel / Authorized signatory

Title:     

Signature Page to Exchange Agreement

EXHIBIT A

[*]

EXHIBIT B

[*]

EXCHANGE AGREEMENT
EXHIBIT A-1

[*]

B-1

EXHIBIT A-2

[*]

B-2

EXHIBIT A-3

[*]

B-3

EXHIBIT A-4

[*]

B-4

EXHIBIT B-1

[*]

B-5

EXHIBIT B-2

[*]

B-6

EXHIBIT B-3

[*]

B-7

EXHIBIT B-4

[*]

B-8

PARTIAL UNWIND AGREEMENT
with respect to the Base Call Option Confirmation, dated May 30, 2019
    between Enphase Energy, Inc. and Barclays Bank PLC

Execution

THIS  PARTIAL  UNWIND  AGREEMENT  (this  “Agreement”)  with  respect  to  the  Base  Call  Option  Confirmation  (as  defined  below)  and  the  Additional  Call  Option
Confirmation  (as  defined  below)  is  made  as  of  December  14,  2020  between  Enphase  Energy,  Inc.  (the  “Company”)  and  Barclays  Bank  PLC  (“Dealer”),  acting  through  its  agent
Barclays Capital Inc. (“Agent”).

WHEREAS, the Company and Dealer entered into (i) a Base Call Option confirmation, dated as of May 30, 2019 (the “Base Call Option Confirmation”) (ii) an Additional
Call  Option  confirmation,  dated  as  of  June  4,  2019  (the  “Additional  Call  Option  Confirmation"  and  together  with  the  Base  Call  Option  Confirmation,  the  “Call  Option
Confirmations”), pursuant to which the Dealer issued to the Company options to purchase shares of common stock of the Company (the “Transactions”);

WHEREAS,  the  Company  has  requested,  and  Dealer  has  agreed,  to  unwind  the  Base  Call  Option  Confirmation  with  respect  to  38,500  Options  (the  “Unwind  Options”)

underlying the Base Call Option Confirmation;

NOW,  THEREFORE,  in  consideration  of  their  mutual  covenants  herein  contained,  the  parties  hereto,  intending  to  be  legally  bound,  hereby  mutually  covenant  and  agree  as

follows:

1.    Defined Terms. Any capitalized term not otherwise defined herein shall have the meaning set forth for such term in the Call Option Confirmations.

2.    Partial Options Unwind. On the Delivery Date (as defined below), the Number of Options in the Base Call Option Confirmation shall be reduced by the number of Unwind

Options, from 120,000 to 81,500.

[Reserved.]

Procedures for Partial Unwind.

Pursuant to the terms of this Agreement, during the Hedge Unwind

Period (as defined below) Dealer (or an affiliate of Dealer), for the account of Dealer, shall unwind a portion of its hedge of the Options underlying the Base Call Option Confirmation.

5.    Delivery. On the first Scheduled Trading Day following the conclusion of the Hedge Unwind Period, or if such day is not a Currency Business Day, on the next Currency
Business Day immediately following such day (the “Delivery Date”), Dealer shall deliver to the Company a number of Shares equal to an amount equal to the product of (i) the number
of Unwind Options multiplied by (ii) the Cash Settlement Amount per Option in respect of such Hedge Unwind Period (as determined based on the grid attached as Exhibit A to this
Agreement) divided by (iii) the VWAP Price (as defined on the attached Exhibit A to this Agreement). “Hedge Unwind Period” means December 15, 2020, subject to the immediately
succeeding paragraph.

3.

4.

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Notwithstanding anything to the contrary in this Agreement, if (i) the Scheduled Trading Day during any Hedge Unwind Period is a Disrupted Day (as defined in the
Call Option Confirmations) or (ii) Dealer determines, based on the advice of counsel, that on any Scheduled Trading Day during the Hedge Unwind Period an extension of such Hedge
Unwind Period is reasonably necessary or advisable to preserve Dealer’s hedge unwind activity hereunder in light of existing liquidity conditions or to enable Dealer to effect sales of
Shares in connection with its hedge unwind activity hereunder in a manner that would be in compliance with applicable legal, regulatory or self-regulatory requirements, or with related
policies and procedures applicable to Dealer, then the Daily Price for such Scheduled Trading Day(s) shall be the volume-weighted average price per Share on such Scheduled Trading
Day on the Exchange, as determined by the Calculation Agent based on transactions in the Shares on such Scheduled Trading Day taking into account, if applicable, the nature and
duration of such Market Disruption Event, and the number of Scheduled Trading Days and the Cash Settlement Amount per Option related to the Hedge Unwind Period shall be adjusted
by the Calculation Agent to account for such disruption and/or extension.

6.    Representations and Warranties of the Company. The Company represents and warrants to Dealer on the date hereof that:

to perform its obligations under this Agreement and has taken all necessary action to authorize such execution, delivery and performance;

(a)    the Company has the power to execute this Agreement and any other documentation relating to this Agreement to which it is a party, to deliver this Agreement and

order or judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or affecting it or any of its assets;

(b)    such execution, delivery and performance do not violate or conflict with any law applicable to the Company, any provision of its constitutional documents, any

force and effect and all conditions of any such consents have been complied with;

(c)    all governmental and other consents that are required to have been obtained by the Company with respect to this Agreement have been obtained and are in full

(d)    the Company’s obligations under this Agreement constitute its legal, valid and binding obligations, enforceable in accordance with its terms (subject to applicable
bankruptcy,  reorganization,  insolvency,  moratorium  or  similar  laws  affecting  creditors’  rights  generally  and  subject,  as  to  enforceability,  to  equitable  principles  of  general  application
(regardless of whether enforcement is sought in a proceeding in equity or at law));

(e)    each of the Company and its affiliates is not in possession of any material nonpublic information regarding the Company or its common stock;

(f)    the Company (A) is capable of evaluating investment risks independently, both in general and with regard to all transactions and investment strategies involving a
security or securities; (B) will exercise independent judgment in evaluating the recommendations of any broker-dealer or its associated persons, unless it has otherwise notified the broker-
dealer in writing; and (C) has total assets of at least $50 million;

(g)    the Company is not entering into this Agreement to create actual or apparent trading activity in the Shares (or any security convertible into or exchangeable for the
Shares) or to raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or exchangeable for the Shares) or otherwise in violation of the Securities
Exchange Act of 1934, as amended (the “Exchange Act”);

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(h)    the Company is an “eligible contract participant” (as such term is defined in Section 1a(18) of the Commodity Exchange Act, as amended, other than a person that

is an eligible contract participant under Section 1a(18)(C) of the Commodity Exchange Act);

(i)    the Company is not and, after consummation of the transactions contemplated hereby, will not be required to register as an “investment company” as such term is

defined in the Investment Company Act of 1940, as amended;

(j)    the Company agrees that on each day during the Hedge Unwind Period, the Shares shall not be subject to a “restricted period,” as such term is defined in Regulation
M under the Exchange Act and that the Company shall not engage in any “distribution,” as such term is defined in Regulation M under the Exchange Act, other than a distribution meeting
the  requirements  of  the  exceptions  set  forth  in  sections  101(b)(10)  and  102(b)(7)  of  Regulation  M  under  the  Exchange  Act,  until  the  second  Exchange  Business  Day  immediately
following the last day of the Hedge Unwind Period;

(k)    the Company agrees that on each Scheduled Trading Day during the Hedge Unwind Period, neither the Company nor any “affiliated purchaser” (as defined in Rule
10b-18 of the Exchange Act) shall directly or indirectly (including, without limitation, by means of any cash-settled or other derivative instrument) purchase, offer to purchase, place any
bid or limit order that would effect a purchase of, or commence any tender offer relating to, any Shares (or an equivalent interest, including a unit of beneficial interest in a trust or limited
partnership or a depository share); and

(l)    the Company agrees that prior to the date hereof it has notified Dealer of the total number of Shares, if any, purchased by or for the Company or any of its affiliated
purchasers in Rule 10b-18 purchases of blocks (all as defined in Rule 10b-18 under the Exchange Act) pursuant to the once-a-week block exception set forth in Rule 10b-18(b)(4) during
the four full calendar weeks immediately preceding the date hereof.

7.    Representations and Warranties of Dealer. Dealer represents and warrants to the Company on the date hereof that:    

perform its obligations under this Agreement and has taken all necessary action to authorize such execution, delivery and performance;

(a)    Dealer has the power to execute this Agreement and any other documentation relating to this Agreement to which it is a party, to deliver this Agreement and to

(b)    such execution, delivery and performance do not violate or conflict with any law applicable to Dealer, any provision of its constitutional documents, any order or

judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or affecting it or any of its assets;

(c)    all governmental and other consents that are required to have been obtained by Dealer with respect to this Agreement have been obtained and are in full force and

effect and all conditions of any such consents have been complied with; and

(d)        Dealer’s  obligations  under  this  Agreement  constitute  its  legal,  valid  and  binding  obligations,  enforceable  in  accordance  with  its  terms  (subject  to  applicable
bankruptcy,  reorganization,  insolvency,  moratorium  or  similar  laws  affecting  creditors’  rights  generally  and  subject,  as  to  enforceability,  to  equitable  principles  of  general  application
(regardless of whether enforcement is sought in a proceeding in equity or at law)).

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8.    Account for Payment to the Company:

To be advised.

9.    Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York (without reference to choice of law doctrine).

10.    No Other Changes. Except as expressly set forth herein, all of the terms and conditions of the Call Option Confirmations shall remain in full force and effect and are hereby

confirmed in all respects.

11.    Counterparts. This Agreement may be signed in any number of counterparts, each of which shall be an original, with the same effect as if all of the signatures thereto and

hereto were upon the same instrument.

12.    No Reliance, etc. The Company hereby confirms that it has relied on the advice of its own counsel and other advisors (to the extent it deems appropriate) with respect to any
legal, tax, accounting, or regulatory consequences of this Agreement, that it has not relied on Dealer or its affiliates in any respect in connection therewith, and that it will not hold Dealer
or its affiliates accountable for any such consequences.

13.    Acknowledgments and Agreements. The Company acknowledges and agrees that (i) the Company does not have, and shall not attempt to exercise, any influence over how,
when or whether to effect sales of the Shares by Dealer (or its agent or affiliate) in connection with this Agreement and (ii) the Company is entering into this Agreement in good faith and
not as part of a plan or scheme to evade compliance with federal securities laws including, without limitation, Rule 10b-5 promulgated under the Securities Exchange Act of 1934, as
amended. For the avoidance of doubt, the Company agrees that Section 13.2 of the Equity Definitions remains applicable with respect to any Hedge Positions and Hedging Activities of
Dealer in respect of the Transactions subject to the Call Option Confirmations and the transactions contemplated by this Agreement.

14.    Unwind Options. Except for the delivery pursuant to this Agreement, the parties agree that no payments or deliveries shall become due or payable and no exercises shall
occur, with respect to the Unwind Options; provided, however, that until the last day of the Hedge Unwind Period, the “Cash Settlement Amount per Option” shall remain subject to
adjustment by the Calculation Agent in a manner consistent with, and for the same events that would result in an adjustment to the terms of, the Call Option Confirmations.

15.    [Reserved.]

16.    Role of Agent. Each of Dealer and the Company acknowledges to and agrees with the other party hereto and to and with the Agent that (i) the Agent is acting as agent for
Dealer under the Transactions pursuant to instructions from such party, (ii) the Agent is not a principal or party to the Transactions, and may transfer its rights and obligations with respect
to  the  Transactions,  (iii)  the  Agent  shall  have  no  responsibility,  obligation  or  liability,  by  way  of  issuance,  guaranty,  endorsement  or  otherwise  in  any  manner  with  respect  to  the
performance  of  either  party  under  the  Transactions,  (iv)  Dealer  and  the  Agent  have  not  given,  and  the  Company  is  not  relying  (for  purposes  of  making  any  investment  decision  or
otherwise) upon, any statements, opinions or representations (whether written or oral) of Dealer or the Agent, other than the

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representations expressly set forth in this Agreement, and (v) each party agrees to proceed solely against the other party, and not the Agent, to collect or recover any money or securities
owed to it in connection with the Transactions. Each party hereto acknowledges and agrees that the Agent is an intended third party beneficiary hereunder. Company acknowledges that
the Agent is an affiliate of Dealer. Dealer will be acting for its own account in respect of this Agreement and the Transactions contemplated in the Confirmations thereunder.

17.    Side Letters. The parties further agree that each of the following side letters to the Transactions shall continue in full force and effect:

(a)    The letter agreement by and between Dealer and the Company dated as of May 30, 2019, specifying certain additional terms and conditions of the Base Call Option

Confirmation issued by Dealer to the Company; and

(b)    The letter agreement by and between Dealer and the Company dated as of June 4, 2019, specifying certain additional terms and conditions of the Additional Call

Option Confirmation issued by Dealer to the Company.

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IN WITNESS WHEREOF, the parties have executed this AGREEMENT the day and the year first above written.

         Authorized Signatory
Title:    Chief Financial Officer

     BARCLAYS BANK PLC

Authorized Signatory

ENPHASE ENERGY, INC.
By:     /S/ Eric Branderiz    

By:     /S/ Faiz Khan    

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EXHIBIT A

VWAP Price

Cash Settlement Amount per Option

$135.00

$136.00

$137.00

$138.00

$139.00

$140.00

$141.00

$142.00

$143.00

$144.00

$145.00

$146.00

$147.00

$148.00

$149.00

$150.00

$2,234.02

$2,253.53

$2,273.04

$2,292.55

$2,312.06

$2,331.57

$2,351.08

$2,370.60

$2,390.11

$2,409.62

$2,429.13

$2,448.64

$2,468.15

$2,487.66

$2,507.17

$2,526.69

If the VWAP Price is not specified on the grid above, the Cash Settlement Amount per Option shall be determined based on a straight-line interpolation between the VWAP Prices or
extrapolation from the VWAP Prices (as the case may be) specified on the grid above.

“VWAP Price” means the arithmetic average of the Daily Prices for all Scheduled Trading Days in the Hedge Unwind Period.

“Daily Price”  for  any  Scheduled  Trading  Day  means  the  per  Share  volume-weighted  average  price  as  displayed  under  the  heading  “Bloomberg  VWAP”  on  Bloomberg  page  ENPH
 AQR (or any successor thereto) in respect of the period from 9:30 a.m. to 4:00 p.m. (New York City time) on such Scheduled Trading Day (or if such volume-weighted average
price is unavailable or manifestly incorrect, the market value of one Share on such Scheduled Trading Day, as determined by the Calculation Agent).

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PARTIAL UNWIND AGREEMENT
with respect to the Base Call Option Confirmation, dated May 30, 2019
    between Enphase Energy, Inc. and Credit Suisse Capital LLC

Execution

THIS  PARTIAL  UNWIND  AGREEMENT  (this  “Agreement”)  with  respect  to  the  Base  Call  Option  Confirmation  (as  defined  below)  and  the  Additional  Call  Option
Confirmation (as defined below) is made as of December 14, 2020 between Enphase Energy, Inc. (the “Company”) and Credit Suisse Capital LLC (“Dealer”), acting through its agent
Credit Suisse Securities (USA) LLC (“Agent”).

WHEREAS, the Company and Dealer entered into (i) a Base Call Option confirmation, dated as of May 30, 2019 (the “Base Call Option Confirmation”) (ii) an Additional
Call  Option  confirmation,  dated  as  of  June  4,  2019  (the  “Additional  Call  Option  Confirmation"  and  together  with  the  Base  Call  Option  Confirmation,  the  “Call  Option
Confirmations”), pursuant to which the Dealer issued to the Company options to purchase shares of common stock of the Company (the “Transactions”);

WHEREAS,  the  Company  has  requested,  and  Dealer  has  agreed,  to  unwind  the  Base  Call  Option  Confirmation  with  respect  to  38,500  Options  (the  “Unwind  Options”)

underlying the Base Call Option Confirmation;

NOW, THEREFORE, in consideration of their mutual covenants herein contained, the parties hereto, intending to be legally bound, hereby mutually covenant and agree as

follows:

1.    Defined Terms. Any capitalized term not otherwise defined herein shall have the meaning set forth for such term in the Call Option Confirmations.

2.    Partial Options Unwind. On the Delivery Date (as defined below), the Number of Options in the Base Call Option Confirmation shall be reduced by the number of Unwind

Options, from 120,000 to 81,500.

3.    [Reserved]

4.    Procedures for Partial Unwind. Pursuant to the terms of this Agreement, during the Hedge Unwind Period (as defined below) Dealer (or an affiliate of Dealer), for the

account of Dealer, shall unwind a portion of its hedge of the Options underlying the Base Call Option Confirmation.

5.    Delivery. On the first Scheduled Trading Day following the conclusion of the Hedge Unwind Period, or if such day is not a Currency Business Day, on the next Currency
Business Day immediately following such day (the “Delivery Date”), the Dealer shall deliver to the Company a number of Shares equal to an amount equal to the product of (i) the
number of Unwind Options multiplied by (ii) the Cash Settlement Amount per Option in respect of such Hedge Unwind Period (as determined based on the grid attached as Exhibit A to
this  Agreement)  divided  by  (iii)  the  VWAP  Price  (as  defined  on  the  attached  Exhibit  A  to  this  Agreement).  “Hedge  Unwind  Period”  means  December  15,  2020,  subject  to  the
immediately succeeding paragraph.

Notwithstanding anything to the contrary in this Agreement, if (i) the Scheduled Trading Day during any Hedge Unwind Period is a Disrupted Day (as defined in the
Call Option Confirmations) or (ii) Dealer determines, based on the advice of counsel, that on any Scheduled Trading Day during the Hedge Unwind Period an extension of such Hedge
Unwind Period is reasonably necessary or advisable to preserve Dealer’s hedge unwind activity hereunder in light of existing liquidity conditions or to enable Dealer to effect sales of
Shares in connection with its hedge unwind activity hereunder in a manner that would be in compliance with applicable legal, regulatory or self-regulatory requirements, or with related
policies and procedures applicable to Dealer, then the Daily Price for such Scheduled Trading Day(s) shall be the volume-weighted average price per Share on such Scheduled Trading
Day on the Exchange, as determined by the Calculation Agent based on transactions in the Shares on such Scheduled Trading Day taking into account, if applicable, the nature and
duration  of  such  Market  Disruption  Event,  and  the  number  of  Scheduled  Trading  Days  and  the  Cash  Settlement  Amount  per  Option  related  to  the  Hedge  Unwind  Period  shall  be
adjusted by the Calculation Agent to account for such disruption and/or extension.

6.    Representations and Warranties of the Company. The Company represents and warrants to Dealer on the date hereof that:    

to perform its obligations under this Agreement and has taken all necessary action to authorize such execution, delivery and performance;

(a)    the Company has the power to execute this Agreement and any other documentation relating to this Agreement to which it is a party, to deliver this Agreement and

order or judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or affecting it or any of its assets;

(b)    such execution, delivery and performance do not violate or conflict with any law applicable to the Company, any provision of its constitutional documents, any

force and effect and all conditions of any such consents have been complied with;

(c)    all governmental and other consents that are required to have been obtained by the Company with respect to this Agreement have been obtained and are in full

(d)    the Company’s obligations under this Agreement constitute its legal, valid and binding obligations, enforceable in accordance with its terms (subject to applicable
bankruptcy,  reorganization,  insolvency,  moratorium  or  similar  laws  affecting  creditors’  rights  generally  and  subject,  as  to  enforceability,  to  equitable  principles  of  general  application
(regardless of whether enforcement is sought in a proceeding in equity or at law));

(e)    each of the Company and its affiliates is not in possession of any material nonpublic information regarding the Company or its common stock;

(f)    the Company (A) is capable of evaluating investment risks independently, both in general and with regard to all transactions and investment strategies involving a
security  or  securities;  (B)  will  exercise  independent  judgment  in  evaluating  the  recommendations  of  any  broker-dealer  or  its  associated  persons,  unless  it  has  otherwise  notified  the
broker- dealer in writing; and (C) has total assets of at least $50 million;

(g)    the Company is not entering into this Agreement to create actual or apparent trading activity in the Shares (or any security convertible into or exchangeable for the
Shares) or to raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or exchangeable for the Shares) or otherwise in violation of the Securities
Exchange Act of 1934, as amended (the “Exchange Act”);

(h)    the Company is an “eligible contract participant” (as such term is defined in Section 1a(18) of the Commodity Exchange Act, as amended, other than a person that

is an eligible contract participant under Section 1a(18)(C) of the Commodity Exchange Act);

(i)    the Company is not and, after consummation of the transactions contemplated hereby, will not be required to register as an “investment company” as such term is

defined in the Investment Company Act of 1940, as amended;

(j)        the  Company  agrees  that  on  each  day  during  the  Hedge  Unwind  Period,  the  Shares  shall  not  be  subject  to  a  “restricted  period,”  as  such  term  is  defined  in
Regulation  M  under  the  Exchange  Act  and  that  the  Company  shall  not  engage  in  any  “distribution,”  as  such  term  is  defined  in  Regulation  M  under  the  Exchange  Act,  other  than  a
distribution meeting the requirements of the exceptions set forth in sections 101(b)(10) and 102(b)(7) of Regulation M under the Exchange Act, until the second Exchange Business Day
immediately following the last day of the Hedge Unwind Period;

(k)    the Company agrees that on each Scheduled Trading Day during the Hedge Unwind Period, neither the Company nor any “affiliated purchaser” (as defined in Rule
10b-18 of the Exchange Act) shall directly or indirectly (including, without limitation, by means of any cash-settled or other derivative instrument) purchase, offer to purchase, place any
bid or limit order that would effect a purchase of, or commence any tender offer relating to, any Shares (or an equivalent interest, including a unit of beneficial interest in a trust or limited
partnership or a depository share); and

(l)    the Company agrees that prior to the date hereof it has notified Dealer of the total number of Shares, if any, purchased by or for the Company or any of its affiliated
purchasers in Rule 10b-18 purchases of blocks (all as defined in Rule 10b-18 under the Exchange Act) pursuant to the once-a-week block exception set forth in Rule 10b-18(b)(4) during
the four full calendar weeks immediately preceding the date hereof.

7.    Representations and Warranties of Dealer. Dealer represents and warrants to the Company on the date hereof that:

(a)    Dealer has the power to execute this Agreement and any other documentation relating to this Agreement to which it is a party, to deliver this Agreement and to

perform its obligations under this Agreement and has taken all necessary action to authorize such execution, delivery and performance;

(b)    such execution, delivery and performance do not violate or conflict with any law applicable to Dealer, any provision of its constitutional documents, any order or

judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or affecting it or any of its assets;

effect and all conditions of any such consents have been complied with; and

(c)    all governmental and other consents that are required to have been obtained by Dealer with respect to this Agreement have been obtained and are in full force and

(d)        Dealer’s  obligations  under  this  Agreement  constitute  its  legal,  valid  and  binding  obligations,  enforceable  in  accordance  with  its  terms  (subject  to  applicable
bankruptcy,  reorganization,  insolvency,  moratorium  or  similar  laws  affecting  creditors’  rights  generally  and  subject,  as  to  enforceability,  to  equitable  principles  of  general  application
(regardless of whether enforcement is sought in a proceeding in equity or at law)).

8.    Account for Payment to the Company:

To be advised.

9.    Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York (without reference to choice of law doctrine).

10.    No Other Changes. Except as expressly set forth herein, all of the terms and conditions of the Call Option Confirmations shall remain in full force and effect and are hereby

confirmed in all respects.

11.    Counterparts. This Agreement may be signed in any number of counterparts, each of which shall be an original, with the same effect as if all of the signatures thereto and

hereto were upon the same instrument.

12.    No Reliance, etc. The Company hereby confirms that it has relied on the advice of its own counsel and other advisors (to the extent it deems appropriate) with respect to
any legal, tax, accounting, or regulatory consequences of this Agreement, that it has not relied on Dealer or its affiliates in any respect in connection therewith, and that it will not hold
Dealer or its affiliates accountable for any such consequences.

13.    Acknowledgments and Agreements. The Company acknowledges and agrees that (i) the Company does not have, and shall not attempt to exercise, any influence over how,
when or whether to effect sales of the Shares by Dealer (or its agent or affiliate) in connection with this Agreement and (ii) the Company is entering into this Agreement in good faith and
not as part of a plan or scheme to evade compliance with federal securities laws including, without limitation, Rule 10b-5 promulgated under the Securities Exchange Act of 1934, as
amended. For the avoidance of doubt, the Company agrees that Section 13.2 of the Equity Definitions remains applicable with respect to any Hedge Positions and Hedging Activities of
Dealer in respect of the Transactions subject to the Call Option Confirmations and the transactions contemplated by this Agreement.

14.    Unwind Options. Except for the delivery pursuant to this Agreement, the parties agree that no payments or deliveries shall become due or payable and no exercises shall
occur, with respect to the Unwind Options; provided, however, that until the last day of the Hedge Unwind Period, the “Cash Settlement Amount per Option” shall remain subject to
adjustment by the Calculation Agent in a manner consistent with, and for the same events that would result in an adjustment to the terms of, the Call Option Confirmations.

15.    U.S. Stay Regulations. The parties agree that (i) to the extent that prior to the date hereof both parties have adhered to the 2018 ISDA U.S. Resolution Stay Protocol (the

“Protocol”), the terms of the Protocol are incorporated into and form a part of this Agreement, and for such purposes this Agreement shall be deemed a Protocol Covered Agreement and
each party shall be deemed to have the same status as “Regulated Entity” and/or “Adhering Party” as applicable to it under the Protocol; (ii) to the extent that prior to the date hereof the
parties have executed a separate agreement the effect of which is to amend the qualified financial contracts between them to conform with the requirements of the QFC Stay Rules (the
“Bilateral Agreement”), the terms of the Bilateral Agreement are incorporated into and form a part of this Agreement and each party shall be deemed to have the status of “Covered
Entity” or “Counterparty Entity” (or other similar term) as applicable to it under the Bilateral Agreement; or (iii) if clause (i) and clause (ii) do not apply, the terms of Section 1 and
Section 2 and the related defined terms (together, the “Bilateral Terms”) of the form of bilateral template entitled “Full- Length Omnibus (for use between U.S. G-SIBs and Corporate
Groups)” published by ISDA on November 2, 2018 (currently available on the 2018 ISDA U.S. Resolution Stay Protocol page at www.isda.org and, a copy of which is available upon
request), the effect of which is to amend the qualified financial contracts between the parties thereto to conform with the requirements of the QFC Stay Rules, are hereby incorporated
into and form a part of this Agreement, and for such purposes this Agreement shall be deemed a “Covered Agreement,” Dealer shall be deemed a “Covered Entity” and the Company
shall be deemed a “Counterparty Entity.” In the event that, after the date of

this Agreement, both parties hereto become adhering parties to the Protocol, the terms of the Protocol will replace the terms of this paragraph. In the event of any inconsistencies between
this Agreement and the terms of the Protocol, the Bilateral Agreement or the Bilateral Terms (each, the “QFC Stay Terms”), as applicable, the QFC Stay Terms will govern. Terms used
in this paragraph without definition shall have the meanings assigned to them under the QFC Stay Rules. For purposes of this paragraph, references to “this Agreement” include any
related credit enhancements entered into between the parties or provided by one to the other. In addition, the parties agree that the terms of this paragraph shall be incorporated into any
related covered affiliate credit enhancements, with all references to Dealer replaced by references to the covered affiliate support provider.

“QFC  Stay  Rules”  means  the  regulations  codified  at  12  C.F.R.  252.2,  252.81–8,  12  C.F.R.  382.1-7  and  12  C.F.R.  47.1-8,  which,  subject  to  limited  exceptions,  require  an  express
recognition of the stay-and-transfer powers of the FDIC under the Federal Deposit Insurance Act and the Orderly Liquidation Authority under Title II of the Dodd Frank Wall Street
Reform and Consumer Protection Act and the override of default rights related directly or indirectly to the entry of an affiliate into certain insolvency proceedings and any restrictions on
the transfer of any covered affiliate credit enhancements.

16.    Role of Agent. Agent has no obligation hereunder, by guaranty, endorsement or otherwise, with respect to performance of Dealer’s obligations hereunder or under the

Transactions.

17.    Side Letters. The parties further agree that each of the following side letters to the Transactions shall continue in full force and effect:

(a)    The letter agreement by and between Dealer and the Company dated as of May 30, 2019, specifying certain additional terms and conditions of the Base Call Option

Confirmation issued by Dealer to the Company; and

(b)    The letter agreement by and between Dealer and the Company dated as of June 4, 2019, specifying certain additional terms and conditions of the Additional Call

Option Confirmation issued by Dealer to the Company.

IN WITNESS WHEREOF, the parties have executed this AGREEMENT the day and the year first above written.

Authorized Signatory
Title:    Chief Financial Officer

Authorized Signatory

Authorized Signatory

Authorized Signatory

ENPHASE ENERGY, INC.
By:     /S/ Eric Branderiz    

CREDIT SUISSE CAPITAL LLC
By:     /S/ Bik Kwan Chung    

By:     /S/ Erica Hryniuk    

CREDIT SUISSE SECURITIES (USA) LLC, AS AGENT
By:     /S/ Bik Kwan Chung    

[Signature Page]

EXHIBIT A

VWAP Price

Cash Settlement Amount per Option

$135.00

$136.00

$137.00

$138.00

$139.00

$140.00

$141.00

$142.00

$143.00

$144.00

$145.00

$146.00

$147.00

$148.00

$149.00

$150.00

$3,351.03

$3,380.29

$3,409.56

$3,438.83

$3,468.09

$3,497.36

$3,526.63

$3,555.89

$3,585.16

$3,614.43

$3,643.69

$3,672.96

$3,702.23

$3,731.50

$3,760.76

$3,790.03

If the VWAP Price is not specified on the grid above, the Cash Settlement Amount per Option shall be determined based on a straight-line interpolation between the VWAP Prices or
extrapolation from the VWAP Prices (as the case may be) specified on the grid above.

“VWAP Price” means the arithmetic average of the Daily Prices for all Scheduled Trading Days in the Hedge Unwind Period.

“Daily Price”  for  any  Scheduled  Trading  Day  means  the  per  Share  volume-weighted  average  price  as  displayed  under  the  heading  “Bloomberg  VWAP”  on  Bloomberg  page  ENPH
 AQR (or any successor thereto) in respect of the period from 9:30 a.m. to 4:00 p.m. (New York City time) on such Scheduled Trading Day (or if such volume-weighted average
price is unavailable or manifestly incorrect, the market value of one Share on such Scheduled Trading Day, as determined by the Calculation Agent).

PARTIAL UNWIND AGREEMENT
with respect to the Base Warrants Confirmation, dated May 30, 2019
    between Enphase Energy, Inc. and Barclays Bank PLC

Execution

THIS PARTIAL UNWIND AGREEMENT (this “Agreement”) with respect to the Base Warrants Confirmation (as defined below) and the Additional Warrants Confirmation
(as defined below) is made as of December 14, 2020 between Enphase Energy, Inc. (the “Company”) and Barclays Bank PLC (“Dealer”), acting through its agent Barclays Capital Inc.
(“Agent”).

WHEREAS,  the  Company  and  Dealer  entered  into  (i)  a  Base  Warrants  confirmation,  dated  as  of  May  30,  2019  (the  “Base  Warrants  Confirmation”)  (ii)  an  Additional
Warrants  confirmation,  dated  as  of  June  4,  2019  (the  “Additional  Warrants  Confirmation"  and  together  with  the  Base  Warrants  Confirmation,  the  “Warrants  Confirmations”),
pursuant to which the Company issued to the Dealer warrants to purchase shares of common stock of the Company (the “Transactions”);

WHEREAS,  the  Company  has  requested,  and  Dealer  has  agreed,  to  unwind  the  Base  Warrants  Confirmation  with  respect  to  855,762  Warrants  (the  “Unwind  Warrants”)

underlying the Base Warrants Confirmation;

NOW,  THEREFORE,  in  consideration  of  their  mutual  covenants  herein  contained,  the  parties  hereto,  intending  to  be  legally  bound,  hereby  mutually  covenant  and  agree  as

follows:

1.    Defined Terms. Any capitalized term not otherwise defined herein shall have the meaning set forth for such term in the Warrants Confirmations.

2.    Partial Warrants Unwind. On the Delivery Date (as defined below), the Number of Warrants in the Base Warrants Confirmation shall be reduced by the number of Unwind

Warrants, from 2,341,349 to 1,485,587.

3.    [Reserved]

4.    Procedures for Partial Unwind. Pursuant to the terms of this Agreement, during the Hedge Unwind Period (as defined below) Dealer (or an affiliate of Dealer), for the

account of Dealer, shall unwind a portion of its hedge of the Warrants underlying the Base Warrants Confirmation.

5.    Delivery. On the first Scheduled Trading Day following the conclusion of the Hedge Unwind Period, or if such day is not a Currency Business Day, on the next Currency
Business Day immediately following such day (the “Delivery Date”), the Company shall deliver to Dealer a number of Shares equal to an amount equal to the product of (i) the number
of Unwind Warrants multiplied by (ii) the Cash Settlement Amount per Warrant in respect of such Hedge Unwind Period (as determined based on the grid attached as Exhibit A to this
Agreement) divided by (iii) the VWAP Price (as defined on the attached Exhibit A to this Agreement). “Hedge Unwind Period” means December 15, 2020, subject to the immediately
succeeding paragraph.

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Notwithstanding  anything  to  the  contrary  in  this  Agreement,  if  (i)  the  Scheduled  Trading  Day  during  any  Hedge  Unwind  Period  is  a  Disrupted  Day  (as  defined  in  the  Warrants
Confirmations) or (ii) Dealer determines, based on the advice of counsel, that on any Scheduled Trading Day during the Hedge Unwind Period an extension of such Hedge Unwind
Period is reasonably necessary or advisable to preserve Dealer’s hedge unwind activity hereunder in light of existing liquidity conditions or to enable Dealer to effect sales of Shares in
connection with its hedge unwind activity hereunder in a manner that would be in compliance with applicable legal, regulatory or self-regulatory requirements, or with related policies
and procedures applicable to Dealer, then the Daily Price for such Scheduled Trading Day(s) shall be the volume-weighted average price per Share on such Scheduled Trading Day on the
Exchange, as determined by the Calculation Agent based on transactions in the Shares on such Scheduled Trading Day taking into account, if applicable, the nature and duration of such
Market  Disruption  Event,  and  the  number  of  Scheduled  Trading  Days  and  the  Cash  Settlement  Amount  per  Warrant  related  to  the  Hedge  Unwind  Period  shall  be  adjusted  by  the
Calculation Agent to account for such disruption and/or extension.

6.    Representations and Warranties of the Company. The Company represents and warrants to Dealer on the date hereof that:

(a)    the Company has the power to execute this Agreement and any other documentation relating to this Agreement to which it is a party, to deliver this Agreement and

to perform its obligations under this Agreement and has taken all necessary action to authorize such execution, delivery and performance;

(b)    such execution, delivery and performance do not violate or conflict with any law applicable to the Company, any provision of its constitutional documents, any

order or judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or affecting it or any of its assets;

(c)    all governmental and other consents that are required to have been obtained by the Company with respect to this Agreement have been obtained and are in full

force and effect and all conditions of any such consents have been complied with;

(d)    the Company’s obligations under this Agreement constitute its legal, valid and binding obligations, enforceable in accordance with its terms (subject to applicable
bankruptcy,  reorganization,  insolvency,  moratorium  or  similar  laws  affecting  creditors’  rights  generally  and  subject,  as  to  enforceability,  to  equitable  principles  of  general  application
(regardless of whether enforcement is sought in a proceeding in equity or at law));

(e)    each of the Company and its affiliates is not in possession of any material nonpublic information regarding the Company or its common stock;

(f)    the Company (A) is capable of evaluating investment risks independently, both in general and with regard to all transactions and investment strategies involving a
security or securities; (B) will exercise independent judgment in evaluating the recommendations of any broker-dealer or its associated persons, unless it has otherwise notified the broker-
dealer in writing; and (C) has total assets of at least $50 million;

(g)    the Company is not entering into this Agreement to create actual or apparent trading activity in the Shares (or any security convertible into or exchangeable for the
Shares) or to raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or exchangeable for the Shares) or otherwise in violation of the Securities
Exchange Act of 1934, as amended (the “Exchange Act”);

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(h)    the Company is an “eligible contract participant” (as such term is defined in Section 1a(18) of the Commodity Exchange Act, as amended, other than a person that

is an eligible contract participant under Section 1a(18)(C) of the Commodity Exchange Act);

defined in the Investment Company Act of 1940, as amended;

(i)    the Company is not and, after consummation of the transactions contemplated hereby, will not be required to register as an “investment company” as such term is

(j)    the Company agrees that on each day during the Hedge Unwind Period, the Shares shall not be subject to a “restricted period,” as such term is defined in Regulation
M under the Exchange Act and that the Company shall not engage in any “distribution,” as such term is defined in Regulation M under the Exchange Act, other than a distribution meeting
the  requirements  of  the  exceptions  set  forth  in  sections  101(b)(10)  and  102(b)(7)  of  Regulation  M  under  the  Exchange  Act,  until  the  second  Exchange  Business  Day  immediately
following the last day of the Hedge Unwind Period;

(k)    the Company agrees that on each Scheduled Trading Day during the Hedge Unwind Period, neither the Company nor any “affiliated purchaser” (as defined in Rule
10b-18 of the Exchange Act) shall directly or indirectly (including, without limitation, by means of any cash-settled or other derivative instrument) purchase, offer to purchase, place any
bid or limit order that would effect a purchase of, or commence any tender offer relating to, any Shares (or an equivalent interest, including a unit of beneficial interest in a trust or limited
partnership or a depository share); and

(l)    the Company agrees that prior to the date hereof it has notified Dealer of the total number of Shares, if any, purchased by or for the Company or any of its affiliated
purchasers in Rule 10b-18 purchases of blocks (all as defined in Rule 10b-18 under the Exchange Act) pursuant to the once-a-week block exception set forth in Rule 10b-18(b)(4) during
the four full calendar weeks immediately preceding the date hereof.

7.    Representations and Warranties of Dealer. Dealer represents and warrants to the Company on the date hereof that:

perform its obligations under this Agreement and has taken all necessary action to authorize such execution, delivery and performance;

(a)    Dealer has the power to execute this Agreement and any other documentation relating to this Agreement to which it is a party, to deliver this Agreement and to

(b)    such execution, delivery and performance do not violate or conflict with any law applicable to Dealer, any provision of its constitutional documents, any order or

judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or affecting it or any of its assets;

(c)    all governmental and other consents that are required to have been obtained by Dealer with respect to this Agreement have been obtained and are in full force and

effect and all conditions of any such consents have been complied with; and

(d)        Dealer’s  obligations  under  this  Agreement  constitute  its  legal,  valid  and  binding  obligations,  enforceable  in  accordance  with  its  terms  (subject  to  applicable
bankruptcy,  reorganization,  insolvency,  moratorium  or  similar  laws  affecting  creditors’  rights  generally  and  subject,  as  to  enforceability,  to  equitable  principles  of  general  application
(regardless of whether enforcement is sought in a proceeding in equity or at law)).

8.    Account for Payment to the Company:

To be advised.

Restricted ‐ External

9.    Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York (without reference to choice of law doctrine).

10.    No Other Changes. Except as expressly set forth herein, all of the terms and conditions of the Warrants Confirmations shall remain in full force and effect and are hereby

confirmed in all respects.

11.    Counterparts. This Agreement may be signed in any number of counterparts, each of which shall be an original, with the same effect as if all of the signatures thereto and

hereto were upon the same instrument.

12.    No Reliance, etc. The Company hereby confirms that it has relied on the advice of its own counsel and other advisors (to the extent it deems appropriate) with respect to any
legal, tax, accounting, or regulatory consequences of this Agreement, that it has not relied on Dealer or its affiliates in any respect in connection therewith, and that it will not hold Dealer
or its affiliates accountable for any such consequences.

13.    Acknowledgments and Agreements. The Company acknowledges and agrees that (i) the Company does not have, and shall not attempt to exercise, any influence over how,
when or whether to effect sales of the Shares by Dealer (or its agent or affiliate) in connection with this Agreement and (ii) the Company is entering into this Agreement in good faith and
not as part of a plan or scheme to evade compliance with federal securities laws including, without limitation, Rule 10b-5 promulgated under the Securities Exchange Act of 1934, as
amended. For the avoidance of doubt, the Company agrees that Section 13.2 of the Equity Definitions remains applicable with respect to any Hedge Positions and Hedging Activities of
Dealer in respect of the Transactions subject to the Warrants Confirmations and the transactions contemplated by this Agreement.

14.    Unwind Warrants. Except for the delivery pursuant to this Agreement, the parties agree that no payments or deliveries shall become due or payable and no exercises shall
occur, with respect to the Unwind Warrants; provided, however, that until the last day of the Hedge Unwind Period, the “Cash Settlement Amount per Warrant” shall remain subject to
adjustment by the Calculation Agent in a manner consistent with, and for the same events that would result in an adjustment to the terms of, the Warrants Confirmations.

15.    [Reserved.]

16.    Role of Agent. Each of Dealer and the Company acknowledges to and agrees with the other party hereto and to and with the Agent that (i) the Agent is acting as agent for
Dealer under the Transactions pursuant to instructions from such party, (ii) the Agent is not a principal or party to the Transactions, and may transfer its rights and obligations with respect
to  the  Transactions,  (iii)  the  Agent  shall  have  no  responsibility,  obligation  or  liability,  by  way  of  issuance,  guaranty,  endorsement  or  otherwise  in  any  manner  with  respect  to  the
performance  of  either  party  under  the  Transactions,  (iv)  Dealer  and  the  Agent  have  not  given,  and  the  Company  is  not  relying  (for  purposes  of  making  any  investment  decision  or
otherwise) upon, any statements, opinions or representations (whether written or oral) of Dealer or the Agent, other than the

representations expressly set forth in this Agreement, and (v) each party agrees to proceed solely against the other party, and not the Agent, to collect or recover any money or securities
owed to it in connection with the Transactions. Each party hereto acknowledges and agrees that the Agent is an intended third party beneficiary hereunder. Company acknowledges that
the Agent is an affiliate of Dealer. Dealer will be acting for its own account in respect of this Agreement and the Transactions contemplated in the Confirmations thereunder.

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IN WITNESS WHEREOF, the parties have executed this AGREEMENT the day and the year first above written.

         Authorized Signatory
Title:    Chief Financial Officer

     BARCLAYS BANK PLC

Authorized Signatory

ENPHASE ENERGY, INC.
By:     /S/ Eric Branderiz    

By:     /S/ Faiz Khan    

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EXHIBIT A

VWAP Price

Cash Settlement Amount per Warrant

$135.00

$136.00

$137.00

$138.00

$139.00

$140.00

$141.00

$142.00

$143.00

$144.00

$145.00

$146.00

$147.00

$148.00

$149.00

$150.00

$113.77

$114.77

$115.77

$116.77

$117.77

$118.77

$119.77

$120.77

$121.77

$122.77

$123.77

$124.77

$125.77

$126.77

$127.77

$128.77

If the VWAP Price is not specified on the grid above, the Cash Settlement Amount per Warrant shall be determined based on a straight-line interpolation between the VWAP Prices or
extrapolation from the VWAP Prices (as the case may be) specified on the grid above.

“VWAP Price” means the arithmetic average of the Daily Prices for all Scheduled Trading Days in the Hedge Unwind Period.

“Daily Price”  for  any  Scheduled  Trading  Day  means  the  per  Share  volume-weighted  average  price  as  displayed  under  the  heading  “Bloomberg  VWAP”  on  Bloomberg  page  ENPH
 AQR (or any successor thereto) in respect of the period from 9:30 a.m. to 4:00 p.m. (New York City time) on such Scheduled Trading Day (or if such volume-weighted average
price is unavailable or manifestly incorrect, the market value of one Share on such Scheduled Trading Day, as determined by the Calculation Agent).

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PARTIAL UNWIND AGREEMENT
with respect to the Base Warrants Confirmation, dated May 30, 2019
    between Enphase Energy, Inc. and Credit Suisse Capital LLC

Execution

THIS PARTIAL UNWIND AGREEMENT (this “Agreement”) with respect to the Base Warrants Confirmation (as defined below) and the Additional Warrants Confirmation
(as defined below) is made as of December 14, 2020 between Enphase Energy, Inc. (the “Company”) and Credit Suisse Capital LLC (“Dealer”), acting through its agent Credit Suisse
Securities (USA) LLC (“Agent”).

WHEREAS,  the  Company  and  Dealer  entered  into  (i)  a  Base  Warrants  confirmation,  dated  as  of  May  30,  2019  (the  “Base  Warrants  Confirmation”)  (ii)  an  Additional
Warrants  confirmation,  dated  as  of  June  4,  2019  (the  “Additional  Warrants  Confirmation"  and  together  with  the  Base  Warrants  Confirmation,  the  “Warrants  Confirmations”),
pursuant to which the Company issued to Dealer warrants to purchase shares of common stock of the Company (the “Transactions”);

WHEREAS, the Company has requested, and Dealer has agreed, to unwind the Base Warrants Confirmation with respect to 1,283,644 Warrants (the “Unwind Warrants”)

underlying the Base Warrants Confirmation;

NOW, THEREFORE, in consideration of their mutual covenants herein contained, the parties hereto, intending to be legally bound, hereby mutually covenant and agree as

follows:

1.    Defined Terms. Any capitalized term not otherwise defined herein shall have the meaning set forth for such term in the Warrants Confirmations.

2.    Partial Warrants Unwind. On the Delivery Date (as defined below), the Number of Warrants in the Base Warrants Confirmation shall be reduced by the number of Unwind

Warrants, from 3,512,023 to 2,228,379.

3.    [Reserved.]

4.    Procedures for Partial Unwind. Pursuant to the terms of this Agreement, during the Hedge Unwind Period (as defined below) Dealer (or an affiliate of Dealer), for the

account of Dealer, shall unwind a portion of its hedge of the Warrants underlying the Base Warrants Confirmation.

5.    Delivery. On the first Scheduled Trading Day following the conclusion of the Hedge Unwind Period, or if such day is not a Currency Business Day, on the next Currency
Business Day immediately following such day (the “Delivery Date”), the Company shall deliver to Dealer a number of Shares equal to an amount equal to the product of (i) the number
of Unwind Warrants multiplied by (ii) the Cash Settlement Amount per Warrant in respect of such Hedge Unwind Period (as determined based on the grid attached as Exhibit A to this
Agreement) divided by (iii) the VWAP Price (as defined on the attached Exhibit A to this Agreement). “Hedge Unwind Period” means December 15, 2020, subject to the immediately
succeeding paragraph.

Notwithstanding anything to the contrary in this Agreement, if (i) the Scheduled Trading Day during any Hedge Unwind Period is a Disrupted Day (as defined in the
Warrants Confirmations) or (ii) Dealer determines, based on the advice of counsel, that on any Scheduled Trading Day during the Hedge Unwind Period an extension of such Hedge
Unwind Period is reasonably necessary or advisable to preserve Dealer’s hedge unwind activity hereunder in light of existing liquidity conditions or to enable Dealer to effect sales of
Shares in connection with its hedge unwind activity hereunder in a manner that would be in compliance with applicable legal, regulatory or self-regulatory requirements, or with related
policies and procedures applicable to Dealer, then the Daily Price for such Scheduled Trading Day(s) shall be the volume-weighted average price per Share on such Scheduled Trading
Day on the Exchange, as determined by the Calculation Agent based on transactions in the Shares on such Scheduled Trading Day taking into account, if applicable, the nature and
duration  of  such  Market  Disruption  Event,  and  the  number  of  Scheduled  Trading  Days  and  the  Cash  Settlement  Amount  per  Warrant  related  to  the  Hedge  Unwind  Period  shall  be
adjusted by the Calculation Agent to account for such disruption and/or extension.

6.    Representations and Warranties of the Company. The Company represents and warrants to Dealer on the date hereof that:

the Company has the power to execute this Agreement and any other documentation relating to this Agreement to which it is a party, to deliver this Agreement and to perform its obligations
under this Agreement and has taken all necessary action to authorize such execution, delivery and performance;

(b)    such execution, delivery and performance do not violate or conflict with any law applicable to the Company, any provision of its constitutional documents, any

order or judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or affecting it or any of its assets;

force and effect and all conditions of any such consents have been complied with;

(c)    all governmental and other consents that are required to have been obtained by the Company with respect to this Agreement have been obtained and are in full

(d)    the Company’s obligations under this Agreement constitute its legal, valid and binding obligations, enforceable in accordance with its terms (subject to applicable
bankruptcy,  reorganization,  insolvency,  moratorium  or  similar  laws  affecting  creditors’  rights  generally  and  subject,  as  to  enforceability,  to  equitable  principles  of  general  application
(regardless of whether enforcement is sought in a proceeding in equity or at law));

(e)    each of the Company and its affiliates is not in possession of any material nonpublic information regarding the Company or its common stock;

(f)    the Company (A) is capable of evaluating investment risks independently, both in general and with regard to all transactions and investment strategies involving a
security  or  securities;  (B)  will  exercise  independent  judgment  in  evaluating  the  recommendations  of  any  broker-dealer  or  its  associated  persons,  unless  it  has  otherwise  notified  the
broker- dealer in writing; and (C) has total assets of at least $50 million;

(g)    the Company is not entering into this Agreement to create actual or apparent trading activity in the Shares (or any security convertible into or exchangeable for the
Shares) or to raise or depress or otherwise manipulate the price of the Shares (or any security convertible into or exchangeable for the Shares) or otherwise in violation of the Securities
Exchange Act of 1934, as amended (the “Exchange Act”);

is an eligible contract participant under Section 1a(18)(C) of the Commodity Exchange Act);

(h)    the Company is an “eligible contract participant” (as such term is defined in Section 1a(18) of the Commodity Exchange Act, as amended, other than a person that

defined in the Investment Company Act of 1940, as amended;

(i)    the Company is not and, after consummation of the transactions contemplated hereby, will not be required to register as an “investment company” as such term is

(j)        the  Company  agrees  that  on  each  day  during  the  Hedge  Unwind  Period,  the  Shares  shall  not  be  subject  to  a  “restricted  period,”  as  such  term  is  defined  in
Regulation  M  under  the  Exchange  Act  and  that  the  Company  shall  not  engage  in  any  “distribution,”  as  such  term  is  defined  in  Regulation  M  under  the  Exchange  Act,  other  than  a
distribution meeting the requirements of the exceptions set forth in sections 101(b)(10) and 102(b)(7) of Regulation M under the Exchange Act, until the second Exchange Business Day
immediately following the last day of the Hedge Unwind Period;

(k)    the Company agrees that on each Scheduled Trading Day during the Hedge Unwind Period, neither the Company nor any “affiliated purchaser” (as defined in Rule
10b-18 of the Exchange Act) shall directly or indirectly (including, without limitation, by means of any cash-settled or other derivative instrument) purchase, offer to purchase, place any
bid or limit order that would effect a purchase of, or commence any tender offer relating to, any Shares (or an equivalent interest, including a unit of beneficial interest in a trust or limited
partnership or a depository share); and

(l)    the Company agrees that prior to the date hereof it has notified Dealer of the total number of Shares, if any, purchased by or for the Company or any of its affiliated
purchasers in Rule 10b-18 purchases of blocks (all as defined in Rule 10b-18 under the Exchange Act) pursuant to the once-a-week block exception set forth in Rule 10b-18(b)(4) during
the four full calendar weeks immediately preceding the date hereof.

7.    Representations and Warranties of Dealer. Dealer represents and warrants to the Company on the date hereof that:

Dealer has the power to execute this Agreement and any other documentation relating to this Agreement to which it is a party, to deliver this Agreement and to perform its obligations
under this Agreement and has taken all necessary action to authorize such execution, delivery and performance;

(b)    such execution, delivery and performance do not violate or conflict with any law applicable to Dealer, any provision of its constitutional documents, any order or

judgment of any court or other agency of government applicable to it or any of its assets or any contractual restriction binding on or affecting it or any of its assets;

(c)    all governmental and other consents that are required to have been obtained by Dealer with respect to this Agreement have been obtained and are in full force and

effect and all conditions of any such consents have been complied with; and

(d)        Dealer’s  obligations  under  this  Agreement  constitute  its  legal,  valid  and  binding  obligations,  enforceable  in  accordance  with  its  terms  (subject  to  applicable
bankruptcy,  reorganization,  insolvency,  moratorium  or  similar  laws  affecting  creditors’  rights  generally  and  subject,  as  to  enforceability,  to  equitable  principles  of  general  application
(regardless of whether enforcement is sought in a proceeding in equity or at law)).

8.    Account for Payment to the Company:

To be advised.

9.    Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York (without reference to choice of law doctrine).

10.    No Other Changes. Except as expressly set forth herein, all of the terms and conditions of the Warrants Confirmations shall remain in full force and effect and are hereby

confirmed in all respects.

11.    Counterparts. This Agreement may be signed in any number of counterparts, each of which shall be an original, with the same effect as if all of the signatures thereto and

hereto were upon the same instrument.

12.    No Reliance, etc. The Company hereby confirms that it has relied on the advice of its own counsel and other advisors (to the extent it deems appropriate) with respect to
any legal, tax, accounting, or regulatory consequences of this Agreement, that it has not relied on Dealer or its affiliates in any respect in connection therewith, and that it will not hold
Dealer or its affiliates accountable for any such consequences.

13.    Acknowledgments and Agreements. The Company acknowledges and agrees that (i) the Company does not have, and shall not attempt to exercise, any influence over how,
when or whether to effect sales of the Shares by Dealer (or its agent or affiliate) in connection with this Agreement and (ii) the Company is entering into this Agreement in good faith and
not as part of a plan or scheme to evade compliance with federal securities laws including, without limitation, Rule 10b-5 promulgated under the Securities Exchange Act of 1934, as
amended. For the avoidance of doubt, the Company agrees that Section 13.2 of the Equity Definitions remains applicable with respect to any Hedge Positions and Hedging Activities of
Dealer in respect of the Transactions subject to the Warrants Confirmations and the transactions contemplated by this Agreement.

14.    Unwind Warrants. Except for the delivery pursuant to this Agreement, the parties agree that no payments or deliveries shall become due or payable and no exercises shall
occur, with respect to the Unwind Warrants; provided, however, that until the last day of the Hedge Unwind Period, the “Cash Settlement Amount per Warrant” shall remain subject to
adjustment by the Calculation Agent in a manner consistent with, and for the same events that would result in an adjustment to the terms of, the Warrants Confirmations.

15.    U.S. Stay Regulations. The parties agree that (i) to the extent that prior to the date hereof both parties have adhered to the 2018 ISDA U.S. Resolution Stay Protocol (the

“Protocol”), the terms of the Protocol are incorporated into and form a part of this Agreement, and for such purposes this Agreement shall be deemed a Protocol Covered Agreement and
each party shall be deemed to have the same status as “Regulated Entity” and/or “Adhering Party” as applicable to it under the Protocol; (ii) to the extent that prior to the date hereof the
parties have executed a separate agreement the effect of which is to amend the qualified financial contracts between them to conform with the requirements of the QFC Stay Rules (the
“Bilateral Agreement”), the terms of the Bilateral Agreement are incorporated into and form a part of this Agreement and each party shall be deemed to have the status of “Covered
Entity” or “Counterparty Entity” (or other similar term) as applicable to it under the Bilateral Agreement; or (iii) if clause (i) and clause (ii) do not apply, the terms of Section 1 and
Section 2 and the related defined terms (together, the “Bilateral Terms”) of the form of bilateral template entitled “Full- Length Omnibus (for use between U.S. G-SIBs and Corporate
Groups)” published by ISDA on November 2, 2018 (currently available on the 2018 ISDA U.S. Resolution Stay Protocol page at www.isda.org and, a copy of which is available upon
request), the effect of which is to amend the qualified financial contracts between the parties thereto to conform with the requirements of the QFC Stay Rules, are hereby incorporated
into and form a part of this Agreement, and for such purposes this Agreement shall be deemed a “Covered Agreement,” Dealer shall be deemed a “Covered Entity” and the Company
shall be deemed a “Counterparty Entity.” In the event that, after the date of this Agreement, both parties hereto become adhering parties to the Protocol, the terms of the Protocol

will replace the terms of this paragraph. In the event of any inconsistencies between this Agreement and the terms of the Protocol, the Bilateral Agreement or the Bilateral Terms (each,
the “QFC Stay Terms”), as applicable, the QFC Stay Terms will govern. Terms used in this paragraph without definition shall have the meanings assigned to them under the QFC Stay
Rules. For purposes of this paragraph, references to “this Agreement” include any related credit enhancements entered into between the parties or provided by one to the other. In
addition, the parties agree that the terms of this paragraph shall be incorporated into any related covered affiliate credit enhancements, with all references to Dealer replaced by references
to the covered affiliate support provider.

“QFC  Stay  Rules”  means  the  regulations  codified  at  12  C.F.R.  252.2,  252.81–8,  12  C.F.R.  382.1-7  and  12  C.F.R.  47.1-8,  which,  subject  to  limited  exceptions,  require  an  express
recognition of the stay-and-transfer powers of the FDIC under the Federal Deposit Insurance Act and the Orderly Liquidation Authority under Title II of the Dodd Frank Wall Street
Reform and Consumer Protection Act and the override of default rights related directly or indirectly to the entry of an affiliate into certain insolvency proceedings and any restrictions on
the transfer of any covered affiliate credit enhancements.

16.    Role of Agent. Agent has no obligation hereunder, by guaranty, endorsement or otherwise, with respect to performance of Dealer’s obligations hereunder or under the

Transactions.

IN WITNESS WHEREOF, the parties have executed this AGREEMENT the day and the year first above written.

Authorized Signatory
Title:    Chief Financial Officer

Authorized Signatory

Authorized Signatory

Authorized Signatory

ENPHASE ENERGY, INC.
By:     /S/ Eric Branderiz    

CREDIT SUISSE CAPITAL LLC
By:     /S/ Bik Kwan Chung    

By:     /S/ Erica Hryniuk    

CREDIT SUISSE SECURITIES (USA) LLC, AS AGENT
By:     /S/ Bik Kwan Chung    

[Signature Page]

EXHIBIT A

VWAP Price

Cash Settlement Amount per Warrant

$135.00

$136.00

$137.00

$138.00

$139.00

$140.00

$141.00

$142.00

$143.00

$144.00

$145.00

$146.00

$147.00

$148.00

$149.00

$150.00

$113.77

$114.77

$115.77

$116.77

$117.77

$118.77

$119.77

$120.77

$121.77

$122.77

$123.77

$124.77

$125.77

$126.77

$127.77

$128.77

If the VWAP Price is not specified on the grid above, the Cash Settlement Amount per Warrant shall be determined based on a straight-line interpolation between the VWAP Prices or
extrapolation from the VWAP Prices (as the case may be) specified on the grid above.

“VWAP Price” means the arithmetic average of the Daily Prices for all Scheduled Trading Days in the Hedge Unwind Period.

“Daily Price”  for  any  Scheduled  Trading  Day  means  the  per  Share  volume-weighted  average  price  as  displayed  under  the  heading  “Bloomberg  VWAP”  on  Bloomberg  page  ENPH
 AQR (or any successor thereto) in respect of the period from 9:30 a.m. to 4:00 p.m. (New York City time) on such Scheduled Trading Day (or if such volume-weighted average
price is unavailable or manifestly incorrect, the market value of one Share on such Scheduled Trading Day, as determined by the Calculation Agent).

SUBSIDIARIES OF REGISTRANT

Exhibit 21.1

Enphase Energy Australia Pty. Ltd., an Australian corporation.

Enphase Energy Canada, Inc., a Canadian corporation.

Enphase Energy S.A.S., a French corporation.

Enphase Energy NL B.V., a Dutch private limited liability company.

Enphase Energy New Zealand Limited, a New Zealand corporation.

Enphase Energy International LLC, a Delaware corporation.

Enphase Solar Energy India Pvt. Limited, an Indian private limited company.

Enphase Energy Mexico, S. DE R.L. DE C.V., a Mexican corporation.

Enphase Energy S.r.l., an Italian corporation.

Enphase Energy Canada Holdings, Inc., a Canadian corporation.

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. 333-230314, 333-224103, 333-238997, 333-210037, 333-202630, 333-194749, 333-187057, 333-181382 and 333-216986 on Form S-8
of our reports dated February 12, 2021, 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, 2020.

/s/ DELOITTE & TOUCHE LLP 

San Francisco, California

February 12, 2021

CERTIFICATION

Exhibit 31.1

I, Badrinarayanan Kothandaraman, certify that:

1.

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

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 12, 2021

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

CERTIFICATION

Exhibit 31.2

I, Eric Branderiz, certify that:

1.

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

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 12, 2021

/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, 2020, 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 12th day of February, 2021.

/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.