FREMONT, Calif., Oct. 26, 2023 (GLOBE NEWSWIRE) -- Enphase Energy, Inc. (NASDAQ:ENPH), a global energy technology company and the world's leading supplier of microinverter-based solar and battery systems, announced today financial results for the third quarter of 2023, which included the summary below from its President and CEO, Badri Kothandaraman.

We reported quarterly revenue of $551.1 million in the third quarter of 2023, along with 48.4% for non-GAAP gross margin. We shipped 3,905,239 microinverters, or approximately 1,585.6 megawatts DC, and 86.2 megawatt hours of IQ^™ Batteries.

Financial highlights for the third quarter of 2023 are listed below:

Quarterly revenue of $551.1 million
GAAP gross margin of 47.5%; non-GAAP gross margin of 48.4%, inclusive of net IRA benefit of 2.6%
GAAP operating income of $118.0 million; non-GAAP operating income of $167.6 million
GAAP net income of $114.0 million; non-GAAP net income of $141.8 million
GAAP diluted earnings per share of $0.80; non-GAAP diluted earnings per share of $1.02
Free cash flow of $122.0 million; ending cash, cash equivalents, and marketable securities of $1.78 billion

Our revenue and earnings for the third quarter of 2023 are provided below, compared with the prior quarter:

(In thousands, except per share and percentage data)

	GAAP									Non-GAAP
	Q3 2023			Q2 2023			Q3 2022			Q3 2023			Q2 2023			Q3 2022
Revenue	$	551,082		$	711,118		$	634,713		$	551,082		$	711,118		$	634,713
Gross margin		47.5	%		45.5	%		42.2	%		48.4	%		46.2	%		42.9	%
Operating expenses	$	144,024		$	153,022		$	132,475		$	99,027		$	98,162		$	78,587
Operating income	$	117,989		$	170,320		$	135,441		$	167,593		$	230,468		$	193,962
Net income	$	113,953		$	157,191		$	114,812		$	141,849		$	205,599		$	175,513
Basic EPS	$	0.84		$	1.15		$	0.85		$	1.04		$	1.51		$	1.29
Diluted EPS	$	0.80		$	1.09		$	0.80		$	1.02		$	1.47		$	1.25

Total revenue for the third quarter of 2023 was $551.1 million, compared to $711.1 million in the second quarter of 2023. Due to macroeconomic conditions, our revenue in the United States for the third quarter of 2023 decreased approximately 16%, compared to the second quarter of 2023. Our revenue in Europe decreased approximately 34%, compared to the second quarter of 2023 due to high inventory at our distribution partners along with a softening in demand in our key markets – the Netherlands, France, and Germany.

Our non-GAAP gross margin was 48.4% in the third quarter of 2023, compared to 46.2% in the second quarter of 2023, driven by increased net IRA benefit. Our non-GAAP operating expenses were $99.0 million in the third quarter of 2023, compared to $98.2 million in the second quarter of 2023. Our non-GAAP operating income was $167.6 million in the third quarter of 2023, compared to $230.5 million in the second quarter of 2023.

We exited the third quarter of 2023 with $1.78 billion in cash, cash equivalents, and marketable securities and generated $145.9 million in cash flow from operations in the third quarter of 2023.

In July 2023, our Board of Directors approved a share repurchase program with authorization to purchase up to $1.0 billion of shares of our common stock. In the third quarter of 2023, we repurchased 846,648 shares of our common stock at an average price of $129.92 per share for a total of approximately $110.0 million.

Our capital expenditures were $23.8 million in the third quarter of 2023, compared to $44.0 million in the second quarter of 2023. Capital expenditure requirements decreased as we largely completed building out our U.S. manufacturing lines.

IQ8^™ Microinverters constituted approximately 86% of all our microinverter shipments during the third quarter of 2023. We recently started shipping IQ8 Microinverters into the United Kingdom, Brazil, Sweden, Denmark, South Africa, India, and Greece, and are now shipping IQ8 Microinverters in 15 countries worldwide.

Our IQ Battery shipments increased to 86.2 megawatt hours in the third quarter of 2023, from 82.3 megawatt hours in the second quarter of 2023. We recently introduced IQ Batteries into Sweden, Denmark, and Greece, and launched the IQ^™ Battery 5P in the United Kingdom during the third quarter. We now ship the IQ Battery 5P to Australia, the United States, Puerto Rico, and the United Kingdom. More than 4,100 installers worldwide are certified to install our IQ Batteries.

We began shipments of our microinverters in the third quarter of 2023 from our contract manufacturer Salcomp in Arlington, Texas, our third contract manufacturer in the United States. We shipped approximately 531,000 microinverters to customers in the third quarter from our three contract manufacturers – Flex in South Carolina, Foxconn in Wisconsin, and Salcomp in Texas.

Solargraf℠, our cloud-based design and proposal software platform, now provides NEM 3.0 functionality for solar and battery systems in California. We began offering 3D and shading features and continue to make progress on new features and functions. The software platform is now available to installers in the United States, Brazil, Germany, and Austria.

BUSINESS HIGHLIGHTS

On Oct. 23, 2023, Enphase Energy announced that it entered the solar market in Greece with the introduction of IQ8 Microinverters, with peak output AC power of 384 W, and IQ Batteries.

On Oct. 19, 2023, Enphase Energy announced the availability in the United States and Canada of the Enphase^® IQ^® EV Charger, which is Wi-Fi equipped, includes smart control and monitoring capabilities, and can seamlessly integrate into Enphase's solar and battery system.

On Oct. 16, 2023, Enphase Energy announced that it started shipping IQ8 Microinverters, with peak output AC power of 480 W, in India to support newer high-powered solar modules.

On Oct. 12, 2023, Enphase Energy announced that it entered the solar market in South Africa with the introduction of IQ8 Microinverters for grid-tied residential and small commercial applications, with peak output AC power of 480 W, to support newer high-powered solar modules.

On Oct. 9, 2023, Enphase Energy announced that it entered the solar markets in Sweden and Denmark through an expanded agreement with German-based climate tech startup 1KOMMA5 to offer Enphase Energy System™, powered by IQ8 Microinverters and IQ Batteries.

On Oct. 2, 2023, Enphase Energy announced the launch of the IQ^™ Combiner 3P in nine European countries to dramatically improve the experience of installing an Enphase Energy System and deliver significant installation time savings.

On Sept. 21, 2023, Enphase Energy announced the launch of its most powerful Enphase Energy System to-date, featuring the new IQ Battery 5P and IQ8 Microinverters, for customers in the United Kingdom.

On Aug. 15, 2023, Enphase Energy announced a comprehensive solution that can maximize return-on-investment (ROI) for homeowners under California's new net billing tariff, NEM 3.0.

Enphase Energy recently announced the growing deployments of Enphase systems powered by IQ Microinverters in Italy; IQ Microinverters in South Carolina; and IQ8 Microinverters and the IQ Battery 5P in Australia.

FOURTH QUARTER 2023 FINANCIAL OUTLOOK

For the fourth quarter of 2023, Enphase Energy estimates both GAAP and non-GAAP financial results as follows:

Revenue to be within a range of $300.0 million to $350.0 million, which includes shipments of 80 to 100 megawatt hours of IQ Batteries
GAAP gross margin to be within a range of 46.0% to 49.0% with net IRA benefit and 38.0% to 41.0% before net IRA benefit
Non-GAAP gross margin to be within a range of 48.0% to 51.0% with net IRA benefit and 40.0% to 43.0% before net IRA benefit. Non-GAAP gross margin excludes stock-based compensation expense and acquisition related amortization
Net IRA benefit to be within a range of $26.0 to $28.0 million based on estimated shipments of one million units of U.S. manufactured microinverters
GAAP operating expenses to be within a range of $142.0 million to $146.0 million
Non-GAAP operating expenses to be within a range of $85.0 million to $89.0 million, excluding $57.0 million estimated for stock-based compensation expense and acquisition related expenses and amortization
GAAP and non-GAAP annualized effective tax rate with IRA benefit is expected to be within a range of 21.0% to 23.0%

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Use of non-GAAP Financial Measures

Enphase Energy has presented certain non-GAAP financial measures in this press release. Generally, a non-GAAP financial measure is a numerical measure of a company's performance, financial position, or cash flows that either exclude or include amounts that are not normally excluded or included in the most directly comparable measure calculated and presented in accordance with generally accepted accounting principles in the United States (GAAP). Reconciliation of each non-GAAP financial measure to the most directly comparable GAAP financial measure can be found in the accompanying tables to this press release. Non-GAAP financial measures presented by Enphase Energy include non-GAAP gross profit, gross margin, operating expenses, income from operations, net income, net income per share (basic and diluted), and free cash flow.

These non-GAAP financial measures do not reflect a comprehensive system of accounting, differ from GAAP measures with the same captions and may differ from non-GAAP financial measures with the same or similar captions that are used by other companies. In addition, these non-GAAP measures have limitations in that they do not reflect all of the amounts associated with Enphase Energy's results of operations as determined in accordance with GAAP. As such, these non-GAAP measures should be considered as a supplement to, and not as a substitute for, or superior to, financial measures calculated in accordance with GAAP. Enphase Energy uses these non-GAAP financial measures to analyze its operating performance and future prospects, develop internal budgets and financial goals, and to facilitate period-to-period comparisons. Enphase Energy believes that these non-GAAP financial measures reflect an additional way of viewing aspects of its operations that, when viewed with its GAAP results, provide a more complete understanding of factors and trends affecting its business.

As presented in the "Reconciliation of Non-GAAP Financial Measures" tables below, each of the non-GAAP financial measures excludes one or more of the following items for purposes of calculating non-GAAP financial measures to facilitate an evaluation of Enphase Energy's current operating performance and a comparison to its past operating performance:

Stock-based compensation expense. Enphase Energy excludes stock-based compensation expense from its non-GAAP measures primarily because they are non-cash in nature. Moreover, the impact of this expense is significantly affected by Enphase Energy's stock price at the time of an award over which management has limited to no control.

Acquisition related expenses and amortization. This item represents expenses incurred related to Enphase Energy's business acquisitions, which are non-recurring in nature, and amortization of acquired intangible assets, which is a non-cash expense. Acquisition related expenses and amortization of acquired intangible assets are not reflective of Enphase Energy's ongoing financial performance.

Restructuring and asset impairment charges. Enphase Energy excludes restructuring and asset impairment related charges due to the nature of the expenses being unplanned and arising outside the ordinary course of continuing operations. These costs primarily consist of fees paid for cash-based severance costs and asset write-downs of property and equipment, and other contract termination costs resulting from restructuring initiatives.

Non-cash interest expense. This item consists primarily of amortization of debt issuance costs and accretion of debt discount because these expenses do not represent a cash outflow for Enphase Energy except in the period the financing was secured and such amortization expense is not reflective of Enphase Energy's ongoing financial performance.

Non-GAAP income tax adjustment. This item represents the amount adjusted to Enphase Energy's GAAP tax provision or benefit to report the non-GAAP tax amount based on cash tax expense and reserves for periods prior to 2023. Effective January 1, 2023, Enphase Energy updated its methodology of computing the non-GAAP income tax adjustment from reporting cash tax expense and reserves to the projected non-GAAP annualized effective tax rate as Enphase Energy utilized most of its net operating loss and tax credit carryforwards in the year ended December 31, 2022 and became a significant cash taxpayer in the United States. Going forward, Enphase Energy will exclude the income tax effects of GAAP adjustments such as stock-based compensation, amortization of purchased intangibles, and other non-recurring items that are not reflective of Enphase Energy ongoing financial performance.

Free cash flow. This item represents net cash flows from operating activities less purchases of property and equipment.

Conference Call Information

Enphase Energy will host a conference call for analysts and investors to discuss its third quarter 2023 results and fourth quarter 2023 business outlook today at 4:30 p.m. Eastern Time (1:30 p.m. Pacific Time). The call is open to the public by dialing (833) 634-5018. A live webcast of the conference call will also be accessible from the "Investor Relations" section of Enphase Energy's website at investor.enphase.com. Following the webcast, an archived version will be available on the website for approximately one year. In addition, an audio replay of the conference call will be available by calling (877) 344-7529; replay access code 1347879, beginning approximately one hour after the call.

Forward-Looking Statements

This press release contains forward-looking statements, including statements related to Enphase Energy's expectations as to its fourth quarter of 2023 financial outlook, including revenue, storage shipments, gross margin before and after net IRA benefit, operating expenses, and annualized effective tax rate; its expectations regarding the expected net IRA benefit; its expectations on the timing of the introduction of new products into new countries globally; the capabilities, advantages, features, and performance of its technology and products; the anticipated demand for and availability of its products and services; and growth in deployments of Enphase products. These forward-looking statements are based on Enphase Energy's current expectations and inherently involve significant risks and uncertainties. Enphase Energy's actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of certain risks and uncertainties including those risks described in more detail in its most recently filed Annual Report on Form 10-K and other documents on file with the SEC from time to time and available on the SEC's website at www.sec.gov. Enphase Energy undertakes no duty or obligation to update any forward-looking statements contained in this release as a result of new information, future events or changes in its expectations, except as required by law.

A copy of this press release can be found on the investor relations page of Enphase Energy's website at investor.enphase.com.

About Enphase Energy, Inc.

Enphase Energy, a global energy technology company based in Fremont, CA, is the world's leading supplier of microinverter-based solar and battery systems that enable people to harness the sun to make, use, save, and sell their own power—and control it all with a smart mobile app. The company revolutionized the solar industry with its microinverter-based technology and builds all-in-one solar, battery, and software solutions. Enphase has shipped approximately 72 million microinverters, and approximately 3.8 million Enphase-based systems have been deployed in over 145 countries. For more information, visit https://enphase.com/.

© 2023 Enphase Energy, Inc. All rights reserved. Enphase Energy, Enphase, the "e" logo, IQ, IQ8, Solargraf, and certain other marks listed at https://enphase.com/trademark-usage-guidelines are trademarks or service marks of Enphase Energy, Inc. Other names are for informational purposes and may be trademarks of their respective owners.

Contact:

Zach Freedman

Enphase Energy, Inc.

Investor Relations

ir@enphaseenergy.com

ENPHASE ENERGY, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

(Unaudited)

	Three Months Ended									Nine Months Ended
	September 30, 2023			June 30, 2023			September 30, 2022			September 30, 2023			September 30, 2022
Net revenues	$	551,082		$	711,118		$	634,713		$	1,988,216		$	1,606,201
Cost of revenues		289,069			387,776			366,797			1,076,490			942,307
Gross profit		262,013			323,342			267,916			911,726			663,894
Operating expenses:
Research and development		54,873			60,043			44,188			172,045			119,163
Sales and marketing		55,357			58,405			55,257			178,383			150,189
General and administrative		33,794			34,397			32,436			104,456			102,647
Restructuring charges		—			177			594			870			594
Total operating expenses		144,024			153,022			132,475			455,754			372,593
Income from operations		117,989			170,320			135,441			455,972			291,301
Other income (expense), net
Interest income		19,669			16,526			3,680			49,235			4,936
Interest expense		(2,196	)		(2,219	)		(2,255	)		(6,571	)		(7,159	)
Other income (expense), net		1,883			(33	)		(2,611	)		2,276			(5,208	)
Total other income (expense), net		19,356			14,274			(1,186	)		44,940			(7,431	)
Income before income taxes		137,345			184,594			134,255			500,912			283,870
Income tax provision		(23,392	)		(27,403	)		(19,443	)		(82,895	)		(40,261	)
Net income	$	113,953		$	157,191		$	114,812		$	418,017		$	243,609
Net income per share:
Basic	$	0.84		$	1.15		$	0.85		$	3.06		$	1.80
Diluted	$	0.80		$	1.09		$	0.80		$	2.92		$	1.70
Shares used in per share calculation:
Basic		136,165			136,607			135,633			136,491			135,056
Diluted		143,863			145,098			145,962			145,081			144,058

ENPHASE ENERGY, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands)

(Unaudited)

	September 30, 2023		December 31, 2022
ASSETS
Current assets:
Cash and cash equivalents	$	290,075	$	473,244
Marketable securities		1,493,809		1,139,599
Accounts receivable, net		560,286		440,896
Inventory		174,114		149,708
Prepaid expenses and other assets		80,346		60,824
Total current assets		2,598,630		2,264,271
Property and equipment, net		173,005		111,367
Operating lease, right of use asset, net		21,164		21,379
Intangible assets, net		79,147		99,541
Goodwill		213,193		213,559
Other assets		215,275		169,291
Deferred tax assets, net		253,528		204,872
Total assets	$	3,553,942	$	3,084,280
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	90,116	$	125,085
Accrued liabilities		434,825		295,939
Deferred revenues, current		114,031		90,747
Warranty obligations, current		40,750		35,556
Debt, current		94,665		90,892
Total current liabilities		774,387		638,219
Long-term liabilities:
Deferred revenues, non-current		366,032		281,613
Warranty obligations, non-current		148,116		95,890
Other liabilities		53,762		43,520
Debt, non-current		1,196,947		1,199,465
Total liabilities		2,539,244		2,258,707
Total stockholders' equity		1,014,698		825,573
Total liabilities and stockholders' equity	$	3,553,942	$	3,084,280

ENPHASE ENERGY, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

	Three Months Ended									Nine Months Ended
	September 30, 2023			June 30, 2023			September 30, 2022			September 30, 2023			September 30, 2022
Cash flows from operating activities:
Net income	$	113,953		$	157,191		$	114,812		$	418,017		$	243,609
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		19,448			17,828			14,664			53,867			42,766
Net amortization (accretion) of premium (discount) on marketable securities		5,094			(10,157	)		(612	)		(12,611	)		2,091
Provision for doubtful accounts		653			449			(79	)		1,282			52
Asset impairment		903			—			—			903			1,200
Non-cash interest expense		2,114			2,106			2,065			6,254			6,090
Net gain from change in fair value of debt securities		(1,910	)		(1,754	)		(519	)		(5,408	)		(390	)
Stock-based compensation		43,814			54,166			52,296			157,635			153,157
Deferred income taxes		(11,499	)		(10,615	)		115			(38,295	)		15,732
Changes in operating assets and liabilities:
Accounts receivable		(34,752	)		(3,968	)		(46,226	)		(118,249	)		(18,680	)
Inventory		(8,003	)		(15,548	)		(16,185	)		(24,406	)		(72,051	)
Prepaid expenses and other assets		(15,383	)		(20,536	)		526			(57,376	)		(20,826	)
Accounts payable, accrued and other liabilities		9,903			24,685			32,060			117,128			42,288
Warranty obligations		8,151			34,681			9,329			57,420			32,207
Deferred revenues		13,369			40,715			25,764			105,169			63,858
Net cash provided by operating activities		145,855			269,243			188,010			661,330			491,103
Cash flows from investing activities:
Purchases of property and equipment		(23,848	)		(44,002	)		(8,948	)		(90,326	)		(30,014	)
Purchases of marketable securities		(470,766	)		(577,521	)		(512,176	)		(1,743,674	)		(572,237	)
Maturities and sale of marketable securities		494,804			557,471			184,123			1,406,608			377,156
Investments in private companies		(15,000	)		—			(1,000	)		(15,000	)		(1,000	)
Business acquisitions, net of cash acquired		—			—			—			—			(27,680	)
Net cash provided by (used in) investing activities		(14,810	)		(64,052	)		(338,001	)		(442,392	)		(253,775	)
Cash flows from financing activities:
Proceeds from exercise of equity awards and employee stock purchase plan		719			556			693			1,315			5,280
Repurchase of common stock		(110,000	)		(200,000	)		—			(310,000	)		—
Payment of withholding taxes related to net share settlement of equity awards		(8,465	)		(12,790	)		(4,589	)		(93,100	)		(19,396	)
Net cash used in financing activities		(117,746	)		(212,234	)		(3,896	)		(401,785	)		(14,116	)
Effect of exchange rate changes on cash and cash equivalents		(1,900	)		(326	)		(4,003	)		(322	)		(4,945	)
Net increase (decrease) in cash and cash equivalents		11,399			(7,369	)		(157,890	)		(183,169	)		218,267
Cash and cash equivalents—Beginning of period		278,676			286,045			495,473			473,244			119,316
Cash and cash equivalents —End of period	$	290,075		$	278,676		$	337,583		$	290,075		$	337,583

ENPHASE ENERGY, INC.

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

(In thousands, except per share data and percentages)

(Unaudited)

	Three Months Ended									Nine Months Ended
	September 30, 2023			June 30, 2023			September 30, 2022			September 30, 2023			September 30, 2022
Gross profit (GAAP)	$	262,013		$	323,342		$	267,916		$	911,726		$	663,894
Stock-based compensation		2,708			3,398			3,188			9,775			8,826
Acquisition related amortization		1,899			1,890			1,445			5,686			4,189
Gross profit (Non-GAAP)	$	266,620		$	328,630		$	272,549		$	927,187		$	676,909

Gross margin (GAAP)		47.5	%		45.5	%		42.2	%		45.9	%		41.3	%
Stock-based compensation		0.6			0.5			0.5			0.5			0.5
Acquisition related amortization		0.3			0.2			0.2			0.2			0.3
Gross margin (Non-GAAP)		48.4	%		46.2	%		42.9	%		46.6	%		42.1	%

Operating expenses (GAAP)	$	144,024		$	153,022		$	132,475		$	455,754		$	372,593
Stock-based compensation⁽¹⁾		(41,106	)		(50,768	)		(49,108	)		(147,860	)		(144,331	)
Acquisition related expenses and amortization		(3,891	)		(3,884	)		(4,186	)		(11,429	)		(11,662	)
Restructuring and asset impairment charges		—			(208	)		(594	)		(901	)		(594	)
Operating expenses (Non-GAAP)	$	99,027		$	98,162		$	78,587		$	295,564		$	216,006

⁽¹⁾ Includes stock-based compensation as follows:
Research and development	$	19,285		$	23,765		$	17,400		$	64,528		$	47,395
Sales and marketing		13,297			14,515			20,069			49,231			55,302
General and administrative		8,524			12,488			11,639			34,101			41,634
Total	$	41,106		$	50,768		$	49,108		$	147,860		$	144,331

Income from operations (GAAP)	$	117,989		$	170,320		$	135,441		$	455,972		$	291,301
Stock-based compensation		43,814			54,166			52,296			157,635			153,157
Acquisition related expenses and amortization		5,790			5,774			5,631			17,115			15,851
Restructuring and asset impairment charges		—			208			594			901			594
Income from operations (Non-GAAP)	$	167,593		$	230,468		$	193,962		$	631,623		$	460,903

Net income (GAAP)	$	113,953		$	157,191		$	114,812		$	418,017		$	243,609
Stock-based compensation		43,814			54,166			52,296			157,635			153,157
Acquisition related expenses and amortization		5,790			5,774			5,631			17,115			15,851
Restructuring and asset impairment charges		—			208			594			901			594
Non-cash interest expense		2,114			2,106			2,065			6,254			6,092
Non-GAAP income tax adjustment		(23,822	)		(13,846	)		115			(61,413	)		15,732
Net income (Non-GAAP)	$	141,849		$	205,599		$	175,513		$	538,509		$	435,035

Net income per share, basic (GAAP)	$	0.84		$	1.15		$	0.85		$	3.06		$	1.80
Stock-based compensation		0.32			0.40			0.39			1.15			1.13
Acquisition related expenses and amortization		0.04			0.04			0.04			0.13			0.12
Restructuring and asset impairment charges		—			—			—			0.01			—
Non-cash interest expense		0.02			0.02			0.01			0.04			0.05
Non-GAAP income tax adjustment		(0.18	)		(0.10	)		—			(0.44	)		0.12
Net income per share, basic (Non-GAAP)	$	1.04		$	1.51		$	1.29		$	3.95		$	3.22

Shares used in basic per share calculation GAAP and Non-GAAP		136,165			136,607			135,633			136,491			135,056

Net income per share, diluted (GAAP)	$	0.80		$	1.09		$	0.80		$	2.92		$	1.70
Stock-based compensation		0.32			0.39			0.37			1.17			1.11
Acquisition related expenses and amortization		0.04			0.05			0.05			0.12			0.12
Restructuring and asset impairment charges		—			0.01			0.01			0.01			0.01
Non-cash interest expense		0.02			0.02			0.02			0.04			0.05
Non-GAAP income tax adjustment		(0.16	)		(0.09	)		—			(0.40	)		0.12
Net income per share, diluted (Non-GAAP) ⁽²⁾	$	1.02		$	1.47		$	1.25		$	3.86		$	3.11

Shares used in diluted per share calculation GAAP		143,863			145,098			145,962			145,081			144,058
Shares used in diluted per share calculation Non-GAAP⁽³⁾		138,535			139,770			140,634			139,753			139,983

Net cash provided by operating activities (GAAP)	$	145,855		$	269,243		$	188,010		$	661,330		$	491,103
Purchases of property and equipment		(23,848	)		(44,002	)		(8,948	)		(90,326	)		(30,014	)
Free cash flow (Non-GAAP)	$	122,007		$	225,241		$	179,062		$	571,004		$	461,089

(2) Calculation of non-GAAP diluted net income per share for the three months ended September 30, 2023, June 30, 2023 and September 30, 2022 excludes convertible Notes due 2023 interest expense, net of tax of less than $0.1 million in each period from non-GAAP net income. Calculation of non-GAAP diluted net income per share for the nine months ended September 30, 2023 and 2022 excludes convertible Notes due 2023 interest expense, net of tax of approximately $0.1 million in each period from non-GAAP net income.

(3) Effect of dilutive in-the-money portion of convertible senior notes and warrants are included in the GAAP weighted-average diluted shares in periods where we have GAAP net income. We excluded convertible Notes due 2025, Notes due 2026 and Notes due 2028 totaling 5,328 thousand shares in each of the three months ended September 30, 2023, June 30, 2023 and September 30, 2022, and nine months ended September 30, 2023 from non-GAAP weighted-average diluted shares as we entered into convertible note hedge transactions that reduce potential dilution to our common stock upon any conversion of the Notes due 2025, Notes due 2026 and Notes due 2028. We excluded convertible Notes due 2026 and Notes due 2028 totaling 4,075 thousand shares in the nine months ended September 30, 2022 from non-GAAP weighted-average diluted shares as we entered into convertible note hedge transactions that reduce potential dilution to our common stock upon any conversion of the Notes due 2026 and Notes due 2028.

Enphase Energy Reports Financial Results for the Third Quarter of 2023