UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

☒

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

FOR THE QUARTERLY PERIOD ENDED ~~June~~September 30, 2021

☐

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: 1-34392

PLUG POWER INC.

(Exact name of registrant as specified in its charter)



Delaware		22-3672377
(State or Other Jurisdiction of		(I.R.S. Employer
Incorporation or Organization)		Identification Number)

968 ALBANY SHAKER ROAD, LATHAM, NEW YORK 12110

(Address of Principal Executive Offices, including Zip Code)

(518) 782-7700

(Registrant’s telephone number, including area code)

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




Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
Common Stock, par value $.01 per share	PLUG	The NASDAQ Capital Market

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

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non- accelerated filer, smaller reporting company, or an emerging growth company. See the 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 ☒

Accelerated filer ☐

Non-accelerated filer ☐

Smaller reporting company ☐

Emerging growth company ☐

If an emerging growth company, indicate by check mark 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 is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

The number of shares of common stock, par value of $0.01 per share, outstanding as of ~~August 2,~~November 8, 2021 was ~~574,355,448.~~576,355,807.

Table of Contents

INDEX to FORM 10-Q

	Page

PART I. FINANCIAL INFORMATION

Item 1 – Interim Condensed Consolidated Financial Statements (Unaudited)	3

Condensed Consolidated Balance Sheets	3

Condensed Consolidated Statements of Operations	4

Condensed Consolidated Statements of Comprehensive Loss	5

Condensed Consolidated Statements of Stockholders’ Equity	6

Condensed Consolidated Statements of Cash Flows	7

Notes to Interim Condensed Consolidated Financial Statements	8

Item 2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations	3133

Item 3 – Quantitative and Qualitative Disclosures About Market Risk	5459

Item 4 – Controls and Procedures	5560

PART II. OTHER INFORMATION

Item 1 – Legal Proceedings	5661

Item 1A – Risk Factors	5863

Item 2 – Unregistered Sales of Equity Securities and Use of Proceeds	5863

Item 3 – Defaults Upon Senior Securities	5863

Item 4 – Mine Safety Disclosures	5863

Item 5 – Other Information	5863

Item 6 – Exhibits	5964

Signatures	6065

Table of Contents

PART 1. FINANCIAL INFORMATION

Item 1 — Interim Financial Statements (Unaudited)

Plug Power Inc. and Subsidiaries

Condensed Consolidated Balance ~~Sheet~~sSheets

(In thousands, except share and per share amounts)

(Unaudited)


	June 30,		December 31,		September 30,		December 31,
	2021		2020		2021		2020
Assets
Current assets:
Cash and cash equivalents	$	3,160,170	$	1,312,404	$	3,371,962	$	1,312,404
Restricted cash		81,460		64,041		90,688		64,041
Available-for-sale securities, at fair value (amortized cost $1,244,618 and allowance for credit losses of $0 at June 30, 2021)		1,242,721		—
Available-for-sale securities, at fair value (amortized cost $756,841 and allowance for credit losses of $0 at September 30, 2021)						752,766		—
Equity securities		120,302		—		147,649		—
Accounts receivable		91,359		43,041		132,370		43,041
Inventory		209,820		139,386		229,814		139,386
Prepaid expenses and other current assets		60,579		44,324		62,746		44,324
Total current assets		4,966,411		1,603,196		4,787,995		1,603,196

Restricted cash		347,933		257,839		390,542		257,839
Property, plant, and equipment, net		110,475		74,549		169,586		74,549
Right of use assets related to finance leases, net		16,926		5,724		22,039		5,724
Right of use assets related to operating leases, net		145,803		117,016		167,907		117,016
Equipment related to power purchase agreements and fuel delivered to customers, net		78,918		75,807		78,711		75,807
Goodwill		72,083		72,387		71,856		72,387
Intangible assets, net		38,052		39,251		37,644		39,251
Other assets		12,225		5,513		13,820		5,513
Total assets	$	5,788,826	$	2,251,282	$	5,740,100	$	2,251,282

Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	70,027	$	50,198	$	68,378	$	50,198
Accrued expenses		35,405		46,083		52,645		46,083
Deferred revenue		27,004		23,275		35,463		23,275
Operating lease liabilities		19,915		14,314		23,284		14,314
Finance lease liabilities		2,728		903		2,758		903
Finance obligations		33,846		32,717		35,595		32,717
Current portion of long-term debt		30,403		25,389		23,491		25,389
Other current liabilities		31,750		29,487		28,329		29,487
Total current liabilities		251,078		222,366		269,943		222,366

Deferred revenue		45,272		32,944		63,402		32,944
Operating lease liabilities		122,203		99,624		139,400		99,624
Finance lease liabilities		12,380		4,493		17,027		4,493
Finance obligations		161,959		148,836		172,242		148,836
Convertible senior notes, net		192,011		85,640		192,320		85,640
Long-term debt		130,081		150,013		123,764		150,013
Other liabilities		42,973		40,447		55,113		40,447
Total liabilities		957,957		784,363		1,033,211		784,363

Stockholders’ equity:
Common stock, $0.01 par value per share; 750,000,000 shares authorized; Issued (including shares in treasury): 586,848,225 at June 30, 2021 and 473,977,469 at December 31, 2020		5,868		4,740
Common stock, $0.01 par value per share; 1,500,000,000 shares authorized; Issued (including shares in treasury): 593,077,995 at September 30, 2021 and 473,977,469 at December 31, 2020						5,930		4,740
Additional paid-in capital		6,962,720		3,446,650		6,978,454		3,446,650
Accumulated other comprehensive income		34		2,451
Accumulated other comprehensive (loss) gain						(2,338)		2,451
Accumulated deficit		(2,097,319)		(1,946,488)		(2,203,989)		(1,946,488)
Less common stock in treasury: 15,926,068 at both June 30, 2021 and December 31, 2020		(40,434)		(40,434)
Less common stock in treasury: 17,032,648 at September 30, 2021 and 15,926,068 at December 31, 2020						(71,168)		(40,434)
Total stockholders’ equity		4,830,869		1,466,919		4,706,889		1,466,919
Total liabilities and stockholders’ equity	$	5,788,826	$	2,251,282	$	5,740,100	$	2,251,282

The accompanying notes are an integral part of these unaudited interim condensed consolidated financial statements

Table of Contents

Plug Power Inc. and Subsidiaries

Condensed Consolidated Statements of Operations

(In thousands, except share and per share amounts)

(Unaudited)

Three Months Ended

Six Months Ended

June 30,

June 30,

2021

2020

2021

2020
Net revenue:

Sales of fuel cell systems and related infrastructure
$
99,278

$
47,746

$
146,050

$
68,214
Services performed on fuel cell systems and related infrastructure

5,675

6,236

11,720

12,757
Power Purchase Agreements

8,361

6,579

16,187

13,000
Fuel delivered to customers

11,121

7,372

22,248

14,705
Other

122

62

310

138
Net revenue

124,557

67,995

196,515

108,814
Cost of revenue:

Sales of fuel cell systems and related infrastructure

79,913

33,888

108,887

47,862
Services performed on fuel cell systems and related infrastructure

15,475

7,773

28,561

18,120
Provision for loss contracts related to service

6,694

706

8,179

801
Power Purchase Agreements

22,234

14,504

40,577

29,275
Fuel delivered to customers

40,331

11,076

62,474

22,330
Other

208

63

306

144
Total cost of revenue

164,855

68,010

248,984

118,532

Gross loss

(40,298)

(15)

(52,469)

(9,718)

Operating expenses:

Research and development

11,247

4,873

20,989

9,647
Selling, general and administrative

38,652

21,644

64,231

32,753
Change in fair value of contingent consideration

(560)

—

230

—
Total operating expenses

49,339

26,517

85,450

42,400

Operating loss

(89,637)

(26,532)

(137,919)

(52,118)

Interest

(10,268)

(13,368)

(22,534)

(25,157)
Other expense, net

(70)

(94)

(268)

(151)
Realized gain on investments, net

18

—

18

—
Change in fair value of equity securities

323

—

323

—
Gain on extinguishment of debt

—

13,222

—

13,222

Loss before income taxes
$
(99,634)

$
(26,772)

$
(160,380)

$
(64,204)

Income tax benefit

—

17,371

—

17,371

Net loss attributable to the Company
$
(99,634)

$
(9,401)

$
(160,380)

$
(46,833)

Preferred stock dividends declared

—

(13)

—

(26)

Net loss attributable to common stockholders
$
(99,634)

$
(9,414)

$
(160,380)

$
(46,859)

Net loss per share:

Basic and diluted
$
(0.18)

$
(0.03)

$
(0.30)

$
(0.15)

Weighted average number of common stock outstanding

567,033,722

316,645,050

540,394,003

310,918,626


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Net revenue:
Sales of fuel cell systems and related infrastructure	$	115,999	$	83,662	$	262,049	$	151,876
Services performed on fuel cell systems and related infrastructure		6,677		6,829		18,397		19,586
Power Purchase Agreements		9,321		6,629		25,508		19,629
Fuel delivered to customers		11,556		9,831		33,804		24,536
Other		369		97		679		235
Net revenue		143,922		107,048		340,437		215,862
Cost of revenue:
Sales of fuel cell systems and related infrastructure		89,235		69,428		198,122		117,290
Services performed on fuel cell systems and related infrastructure		18,697		9,180		47,258		27,300
Provision for loss contracts related to service		7,462		25,147		15,641		25,948
Power Purchase Agreements		31,199		14,744		71,776		44,019
Fuel delivered to customers		27,857		17,002		90,331		39,332
Other		550		131		856		275
Total cost of revenue		175,000		135,632		423,984		254,164

Gross loss		(31,078)		(28,584)		(83,547)		(38,302)

Operating expenses:
Research and development		16,634		7,386		37,623		17,033
Selling, general and administrative		42,421		17,210		106,652		49,963
Change in fair value of contingent consideration		8,530		1,130		8,760		1,130
Total operating expenses		67,585		25,726		153,035		68,126

Operating loss		(98,663)		(54,310)		(236,582)		(106,428)

Interest, net		(5,361)		(17,248)		(27,895)		(42,407)
Other expense, net		(50)		(303)		(318)		(452)
Realized loss on investments, net		(254)		—		(236)		—
Change in fair value of equity securities		(607)		—		(284)		—
Gain on extinguishment of debt		—		—		—		13,222
Loss on equity method investments		(1,736)		—		(1,736)		—

Loss before income taxes	$	(106,671)	$	(71,861)	$	(267,051)	$	(136,065)

Income tax benefit		—		6,644		—		24,015

Net loss attributable to the Company	$	(106,671)	$	(65,217)	$	(267,051)	$	(112,050)

Preferred stock dividends declared		—		—		—		(26)

Net loss attributable to common stockholders	$	(106,671)	$	(65,217)	$	(267,051)	$	(112,076)

Net loss per share:
Basic and diluted	$	(0.19)	$	(0.18)	$	(0.48)	$	(0.34)

Weighted average number of common stock outstanding		574,520,806		371,010,544		551,894,779		330,949,265

The accompanying notes are an integral part of these unaudited interim condensed consolidated financial statements

Table of Contents

Plug Power Inc. and Subsidiaries

Condensed Consolidated Statements of Comprehensive Loss

(In thousands)

(Unaudited)

Three months ended

Six months ended

June 30,

June 30,


2021

2020

2021

2020

Net loss attributable to the Company

$
(99,634)

$
(9,401)

$
(160,380)

$
(46,833)
Other comprehensive gain (loss):

Foreign currency translation gain (loss)

581

107

(542)

(129)
Change in net unrealized loss on available-for-sale securities

(1,967)

—

(1,875)

—
Comprehensive loss attributable to the Company

$
(101,020)

$
(9,294)

$
(162,797)

$
(46,962)

Preferred stock dividends declared

—

(13)

—

(26)
Comprehensive loss attributable to common stockholders

$
(101,020)

$
(9,307)

$
(162,797)

$
(46,988)


	Three months ended				Nine months ended
	September 30,				September 30,
	2021		2020		2021		2020

Net loss attributable to the Company	$	(106,671)	$	(65,217)	$	(267,051)	$	(112,050)
Other comprehensive gain (loss):
Foreign currency translation (loss) gain		(172)		687		(714)		558
Change in net unrealized loss on available-for-sale securities		(2,200)		—		(4,075)		—
Comprehensive loss attributable to the Company	$	(109,043)	$	(64,530)	$	(271,840)	$	(111,492)

Preferred stock dividends declared		—		—		—		(26)
Comprehensive loss attributable to common stockholders	$	(109,043)	$	(64,530)	$	(271,840)	$	(111,518)

The accompanying notes are an integral part of these unaudited interim condensed consolidated financial statements

Table of Contents

Plug Power Inc. and Subsidiaries

Condensed Consolidated Statements of Stockholders’ Equity

(In thousands, except share amounts)

(Unaudited)

Accumulated










Additional

Other

Total

Common Stock

Paid-in

Comprehensive

Treasury Stock

Accumulated

Stockholders’


Shares

Amount

Capital

Income

Shares

Amount

Deficit

Equity
December 31, 2020

473,977,469

$
4,740

$
3,446,650

$
2,451

15,926,068

$
(40,434)

$
(1,946,488)

$
1,466,919
Net loss attributable to the Company

—

—

—

—

—

—

(160,380)

(160,380)
Cumulative impact of Accounting Standards Update 2020-06 adoption

—

—

(130,185)

—

—

—

9,549

(120,636)
Other comprehensive loss

—

—

—

(2,417)

—

—

—

(2,417)
Stock-based compensation

15,166

—

20,815

—

—

—

—

20,815
Public offerings, common stock, net

32,200,000

322

2,022,866

—

—

—

—

2,023,188
Private offerings, common stock, net

54,966,188

549

1,564,088

—

—

—

—

1,564,637
Stock option exercises

1,760,450

18

4,687

—

—

—

—

4,705
Exercise of warrants

20,843,108

208

15,242

—

—

—

—

15,450
Provision for common stock warrants

—

—

3,243

—

—

—

—

3,243
Conversion of 3.75% Convertible Senior Notes

3,016,036

30

15,155

—

—

—

—

15,185
Conversion of 5.5% Convertible Senior Notes

69,808

1

159

—

—

—

—

160
June 30, 2021

586,848,225

$
5,868

$
6,962,720

$
34

15,926,068

$
(40,434)

$
(2,097,319)

$
4,830,869

December 31, 2019

318,637,560

$
3,186

$
1,506,953

$
1,288

15,259,045

$
(31,216)

$
(1,350,307)

$
129,904
Net loss attributable to the Company

—

—

—

—

—

—

(46,833)

(46,833)
Other comprehensive loss

—

—

—

(129)

—

—

—

(129)
Stock-based compensation

586,558

6

6,325

—

33,371

(143)

—

6,188
Stock dividend

5,156

—

20

—

—

—

(20)

—
Public offerings, net

—

—

(269)

—

—

—

(269)
Stock option exercises

6,905,936

69

15,729

—

175

—

—

15,798
Equity component of convertible senior notes, net of issuance costs and income tax benefit

—

—

115,952

—

—

—

—

115,952
Purchase of capped calls

—

—

(16,253)

—

—

—

—

(16,253)
Termination of capped calls

—

—

24,158

—

—

—

—

24,158
Provision for common stock warrants

—

—

7,983

—

—

—

—

7,983
Accretion of discount, preferred stock

—

—

(29)

—

—

—

—

(29)
Conversion of preferred stock

2,998,526

30

1,148

—

—

—

—

1,178
Repurchase of 5.5% Convertible Senior Notes, net of income tax benefit

9,409,591

94

(52,855)

—

—

—

—

(52,761)
Shares issued for acquisitions

9,658,465

97

49,576

—

—

—

—

49,673
June 30, 2020

348,201,792

$
3,482

$
1,658,438

$
1,159

15,292,591

$
(31,359)

$
(1,397,160)

$
234,560


						Accumulated
				Additional		Other							Total
	Common Stock			Paid-in		Comprehensive		Treasury Stock			Accumulated		Stockholders’
	Shares	Amount		Capital		Income		Shares	Amount		Deficit		Equity
December 31, 2020	473,977,469	$	4,740	$	3,446,650	$	2,451	15,926,068	$	(40,434)	$	(1,946,488)	$	1,466,919
Net loss attributable to the Company	—		—		—		—	—		—		(267,051)		(267,051)
Cumulative impact of Accounting Standards Update 2020-06 adoption	—		—		(130,185)		—	—		—		9,550		(120,635)
Other comprehensive loss	—		—		—		(4,789)	—		—		—		(4,789)
Stock-based compensation	61,408		—		34,813		—	—		—		—		34,813
Public offerings, common stock, net	32,200,000		322		2,022,871		—	—		—		—		2,023,193
Private offerings, common stock, net	54,966,188		549		1,564,088		—	—		—		—		1,564,637
Stock option exercises	4,576,102		46		5,270		—	—		—		—		5,316
Stock exchanged for tax withholding	—		—		—		—	1,106,580		(30,734)		—		(30,734)
Exercise of warrants	24,210,984		242		15,203		—	—		—		—		15,445
Provision for common stock warrants	—		—		4,430		—	—		—		—		4,430
Conversion of 3.75% Convertible Senior Notes	3,016,036		30		15,155		—	—		—		—		15,185
Conversion of 5.5% Convertible Senior Notes	69,808		1		159		—	—		—		—		160
September 30, 2021	593,077,995	$	5,930	$	6,978,454	$	(2,338)	17,032,648	$	(71,168)	$	(2,203,989)	$	4,706,889

December 31, 2019	318,637,560	$	3,186	$	1,506,953	$	1,288	15,259,045	$	(31,216)	$	(1,350,307)	$	129,904
Net loss attributable to the Company	—		—		—		—	—		—		(112,050)		(112,050)
Other comprehensive gain	—		—		—		558	—		—		—		558
Stock-based compensation	402,003		4		9,254		—	—		—		—		9,258
Stock dividend	5,156		—		20		—	—		—		(20)		—
Public offerings, net	35,276,250		353		344,045			—		—		—		344,398
Stock option exercises	13,736,265		137		32,416		—	—		—		—		32,553
Stock exchanged for tax withholding	—		—		—		—	667,023		(9,218)		—		(9,218)
Equity component of convertible senior notes, net of issuance costs and income tax benefit	—		—		108,479		—	—		—		—		108,479
Purchase of capped calls	—		—		(16,253)		—	—		—		—		(16,253)
Termination of capped calls	—		—		24,158		—	—		—		—		24,158
Provision for common stock warrants	—		—		32,529		—	—		—		—		32,529
Accretion of discount, preferred stock	—		—		(29)		—	—		—		—		(29)
Conversion of preferred stock	2,998,526		30		1,148		—	—		—		—		1,178
Conversion of 7.5% Convertible Senior Note	16,000,000		160		42,713		—	—		—		—		42,873
Repurchase of 5.5% Convertible Senior Notes, net of income tax benefit	9,409,591		94		(51,840)		—	—		—		—		(51,746)
Shares issued for acquisitions	9,658,465		97		49,576		—	—		—		—		49,673
September 30, 2020	406,123,816	$	4,061	$	2,083,169	$	1,846	15,926,068	$	(40,434)	$	(1,462,377)	$	586,265

The accompanying notes are an integral part of these unaudited interim condensed consolidated financial statements

Table of Contents

Plug Power Inc. and Subsidiaries

Condensed Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)

Six months ended

June 30,

2021

2020
Operating Activities

Net loss attributable to the Company

$
(160,380)

$
(46,833)
Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation of long-lived assets

9,725

6,069
Amortization of intangible assets

730

398
Stock-based compensation

20,815

6,188
Gain on extinguishment of debt

—

(13,222)
Amortization of debt issuance costs and discount on convertible senior notes

1,726

6,528
Provision for common stock warrants

3,452

7,983
Income tax benefit

—

(17,371)
Loss on service contracts

4,399

277
Fair value adjustment to contingent consideration

(230)

—
Net realized gain on investments

(18)

—
Lease origination costs

(4,553)

—
Change in fair value for equity securities

(323)

—
Changes in operating assets and liabilities that provide (use) cash:

Accounts receivable

(48,318)

(18,333)
Inventory

(70,588)

(37,983)
Prepaid expenses, and other assets

(22,967)

(11,887)
Accounts payable, accrued expenses, and other liabilities

4,047

3,903
Deferred revenue

15,848

2,392
Net cash used in operating activities

(246,635)

(111,891)

Investing Activities

Purchases of property, plant and equipment

(33,062)

(5,009)
Purchases of equipment related to Power Purchase Agreements and equipment related to fuel delivered to customers

(7,598)

(6,256)
Purchase of available-for-sale securities

(1,504,891)

—
Proceeds from sales and maturities of available-for-sale securities

260,313

—
Purchase of equity securities

(119,979)

—
Net cash paid for acquisition

-

(45,286)
Net cash used in investing activities

(1,405,217)

(56,551)

Financing Activities

Proceeds from exercise of warrants, net of transaction costs

15,450

—
Proceeds from public and private offerings, net of transaction costs

3,587,825

(269)
Proceeds from exercise of stock options

4,705

15,798
Proceeds from issuance of convertible senior notes, net

—

205,100
Repurchase of convertible senior notes

—

(90,238)
Purchase of capped calls and common stock forward

—

(16,253)
Proceeds from termination of capped calls

—

24,158
Principal payments on long-term debt

(15,564)

(21,626)
Proceeds from long-term debt, net

—

49,000
Repayments of finance obligations and finance leases

(17,281)

(11,129)
Proceeds from finance obligations

32,159

27,678
Net cash provided by financing activities

3,607,294

182,219
Effect of exchange rate changes on cash

(163)

(24)
Increase in cash, cash equivalents and restricted cash

1,955,279

13,753
Cash, cash equivalents, and restricted cash beginning of period

1,634,284

369,500
Cash, cash equivalents, and restricted cash end of period

$
3,589,563

$
383,253

Supplemental disclosure of cash flow information

Cash paid for interest

$
11,261

$
9,466

Summary of non-cash activity

Recognition of right of use asset - finance leases

$
11,286

$
—
Recognition of right of use asset - operating leases

39,271

6,836
Conversion of preferred stock to common stock

—

441
Conversion of convertible senior notes to common stock

15,345

—
Change in accounts payable related to accrued purchases of property, plant and equipment

6,124

—


	Nine months ended
	September 30,
	2021		2020
Operating Activities
Net loss attributable to the Company	$	(267,051)	$	(112,050)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of long-lived assets		15,903		9,860
Amortization of intangible assets		1,095		835
Stock-based compensation		34,813		9,258
Gain on extinguishment of debt		—		(13,222)
Amortization of debt issuance costs and discount on convertible senior notes		2,371		12,183
Provision for common stock warrants		4,746		25,198
Income tax benefit		—		(24,015)
Impairment of long-lived assets		1,329		—
Loss on service contracts		9,586		25,110
Fair value adjustment to contingent consideration		(8,760)		1,130
Net realized loss on investments		236		—
Lease origination costs		(7,889)		—
Change in fair value for equity securities		284		—
Loss on equity method investments		1,736		—
Changes in operating assets and liabilities that provide (use) cash:
Accounts receivable		(89,329)		(86,056)
Inventory		(90,428)		(57,615)
Prepaid expenses, and other assets		(28,465)		(4,956)
Accounts payable, accrued expenses, and other liabilities		28,992		41,125
Deferred revenue		42,330		16,709
Net cash used in operating activities		(348,501)		(156,506)

Investing Activities
Purchases of property, plant and equipment		(91,384)		(11,265)
Purchase of intangible assets		—		(1,638)
Purchases of equipment related to power purchase agreements and equipment related to fuel delivered to customers		(17,900)		(13,699)
Purchase of available-for-sale securities		(1,862,951)		—
Proceeds from sales and maturities of available-for-sale securities		1,105,874		—
Proceeds from sales of equity securities		21,780		—
Purchase of equity securities		(169,713)		—
Net cash paid for acquisition		—		(45,113)
Net cash used in investing activities		(1,014,294)		(71,715)

Financing Activities
Proceeds from exercise of warrants, net of transaction costs		15,445		—
Proceeds from public and private offerings, net of transaction costs		3,587,830		344,398
Payments of tax withholding on behalf of employees for net stock settlement of stock-based compensation		(30,734)		(9,218)
Proceeds from exercise of stock options		5,316		32,553
Proceeds from issuance of convertible senior notes, net		—		205,098
Repurchase of convertible senior notes		—		(90,238)
Purchase of capped calls and common stock forward		—		(16,253)
Proceeds from termination of capped calls		—		24,158
Principal payments on long-term debt		(29,129)		(27,845)
Proceeds from long-term debt, net		—		99,000
Repayments of finance obligations and finance leases		(20,413)		(19,038)
Proceeds from finance obligations		53,447		47,568
Net cash provided by financing activities		3,581,762		590,183
Effect of exchange rate changes on cash		(59)		(90)
Increase in cash, cash equivalents and restricted cash		2,218,908		361,872
Cash, cash equivalents, and restricted cash beginning of period		1,634,284		369,500
Cash, cash equivalents, and restricted cash end of period	$	3,853,192	$	731,372

Supplemental disclosure of cash flow information
Cash paid for interest, net capitalized interest of $2.6 million	$	10,341	$	16,975

Summary of non-cash activity
Recognition of right of use asset - finance leases	$	16,961	$	—
Recognition of right of use asset - operating leases		65,083		25,857
Conversion of preferred stock to common stock		—		43,058
Conversion of convertible senior notes to common stock		15,345		—
Accrued purchase of fixed assets, cash to be paid in subsequent period		8,832		—

The accompanying notes are an integral part of these unaudited interim condensed consolidated financial statements

Table of Contents

1. Nature of Operations

Plug Power is facilitating the paradigm shift to an increasingly electrified world by innovating cutting-edge hydrogen and fuel cell solutions. In our core business, we provide and continue to develop commercially viable hydrogen and fuel cell product solutions to replace lead-acid batteries in electric material handling vehicles and industrial trucks for some of the world’s largest retail-distribution and manufacturing businesses. We are focusing our efforts on industrial mobility applications, including electric forklifts and electric industrial vehicles, at multi-shift high volume manufacturing and high throughput distribution sites where we believe our products and services provide a unique combination of productivity, flexibility, and environmental benefits. Additionally, we manufacture and sell fuel cell products to replace batteries and diesel generators in stationary backup power applications. These products have proven valuable with telecommunications, transportation, and utility customers as robust, reliable, and sustainable power solutions.

Our current products and services include:

GenDrive: GenDrive is our hydrogen fueled Proton Exchange Membrane (“PEM”) fuel cell system providing power to material handling electric vehicles, including class 1, 2, 3 and 6 electric forklifts, Automated Guided Vehicles (“AGVs”) and ground support equipment;

GenFuel: GenFuel is our liquid hydrogen fueling delivery, generation, storage, and dispensing system;

GenCare: GenCare is our ongoing ‘internet of things’-based maintenance and on-site service program for GenDrive fuel cell systems, GenSure fuel cell systems, GenFuel hydrogen storage and dispensing products and ProGen fuel cell engines;

GenSure: GenSure is our stationary fuel cell solution providing scalable, modular PEM fuel cell power to support the backup and grid-support power requirements of the telecommunications, transportation, and utility sectors; GenSure High Power Fuel Cell Platform will support large scale stationary power and data center markets;

GenKey: GenKey is our vertically integrated “turn-key” solution combining either GenDrive or GenSure fuel cell power with GenFuel fuel and GenCare aftermarket service, offering complete simplicity to customers transitioning to fuel cell power;

ProGen: ProGen is our fuel cell stack and engine technology currently used globally in mobility and stationary fuel cell systems, and as engines in electric delivery vans. This includes the Plug Power membrane electrode assembly (“MEA”), a critical component of the fuel cell stack used in zero-emission fuel cell electric vehicle engines; and

GenFuel Electrolyzers: GenFuel electrolyzers are modular, scalable hydrogen generators optimized for clean hydrogen production. Electrolyzers generate hydrogen from water using electricity and a special membrane and “green” hydrogen is generated by using renewable energy inputs, such as solar or wind power.

We provide our products worldwide through our direct product sales force, and by leveraging relationships with original equipment manufacturers (“OEMs”) and their dealer networks. Plug Power is targeting Asia and Europe for expansion in adoption. Europe has rolled out ambitious targets for the hydrogen economy and Plug Power is executing on its strategy to become one of the European leaders. This includes a targeted account strategy for material handling as well as securing strategic partnerships with European OEMs, energy companies, utility leaders and accelerating our electrolyzer business. We manufacture our commercially viable products in Latham, New York, Rochester, New York and Spokane, Washington and support liquid hydrogen generation and logistics in Charleston, Tennessee.

Our wholly-owned subsidiary, Plug Power France, ~~has~~ created a joint venture with Renault SAS (“Renault”) named HyVia, a French société par actions simplifiée (“HyVia”). in the second quarter 2021. HyVia plans to manufacture and sell fuel cell powered electric light commercial vehicles (“FCELCVs”) and to supply hydrogen fuel and fueling stations to support the FCE-LCV market, in each case primarily in Europe. HyVia is owned 50% by Plug Power France and 50% by Renault.

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2. Summary of Significant Accounting Policies

Restatement

As previously disclosed in the Explanatory Note to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020 (the “2020 10-K”), the Company restated its previously issued audited consolidated financial statements as of and for the years ended December 31, 2019 and 2018 and its unaudited interim condensed consolidated financial statements as of and for each of the quarterly periods ended March 31, 2020 and 2019, June 30, 2020 and 2019, September 30, 2020 and 2019 and December 31, 2019.

Previously filed annual reports on Form 10-K and quarterly reports on Form 10-Q for the periods affected by the restatement have not been amended. Accordingly, investors should not rely upon the Company’s previously released financial statements for these periods and any earnings releases or other communications relating to these periods, and, for these periods, investors should rely solely on the financial statements and other financial data for the relevant periods included in the 2020 10-K. Commencing with our quarterly report on Form 10-Q for the quarterly period ended March 31, 2021, we are including in our quarterly reports for fiscal 2021 restated results for the corresponding interim periods of fiscal 2020.

Principles of Consolidation

The unaudited interim condensed consolidated financial statements include the financial statements of the Company and its wholly-owned subsidiaries. Intercompany balances and transactions have been eliminated in consolidation. In addition, we include our share of the results of HyVia using the equity method based on our economic ownership interest and our ability to exercise significant influence over the operating and financial decisions of HyVia.

Interim Financial Statements

The accompanying unaudited interim condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). In the opinion of management, all adjustments, which consist solely of normal recurring adjustments, necessary to present fairly, in accordance with U.S. generally accepted accounting principles (“GAAP”), the financial position, results of operations and cash flows for all periods presented, have been made. The results of operations for the interim periods presented are not necessarily indicative of the results that may be expected for the full year.

Certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with GAAP have been condensed or omitted. These unaudited interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the Company’s 2020 10-K.

The information presented in the accompanying unaudited interim condensed consolidated balance sheets as of December 31, 2020 has been derived from the Company’s December 31, 2020 audited consolidated financial statements.

Certain amounts in the prior period condensed consolidated financial statements have been reclassified to conform to the presentation of the current period condensed consolidated financial statements.

There have been no changes in our accounting policies from those reported in our 2020 10-K, except for the adoption of Accounting Standards Update (“ASU”) 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40), as described in the Recently Adopted Accounting Guidance section. We have also expanded our accounting policy relating to cash equivalents, ~~and~~ available-for-sale securities, equity securities, and stock-based compensation as follows:

Cash Equivalents

Table of Contents

The Company considers all highly-liquid debt securities with original maturities of three months or less to be cash equivalents. At ~~June~~September 30, 2021, cash equivalents consisted of commercial paper and U.S. Treasury securities with original maturities of three months or less, and money market funds. Due to their short-term nature, the carrying amounts reported in the unaudited interim condensed consolidated balance sheets approximate the fair value of cash and cash equivalents.

~~Table of Contents~~

Available-for-sale securities

Available-for-sale securities is comprised of commercial paper with original maturities greater than three months, U.S. Treasury securities, ~~municipal debt,~~ certificates of deposit and corporate bonds. We consider these securities to be available for use in our current year operations, and therefore classify them as current even if we do not dispose of the securities in the following year.

Available-for-sale securities are recorded at fair value as of each balance sheet date. As of each balance sheet date, unrealized gains and losses, with the exception of credit related losses, are recorded to accumulated other comprehensive ~~income.~~income (loss). Any credit related losses are recognized as a credit loss allowance on the balance sheet with a corresponding adjustment to operations. Realized gains and losses are due to the sale and maturity of securities classified as available-for-sale and represent the net gain (loss) from accumulated other comprehensive income (loss) reclassifications for previously unrealized net gains on available-for-sale debt securities.

Equity securities

Equity securities are comprised of fixed income and equity market index mutual funds. Equity securities are valued at fair value with changes in the fair value recognized in our unaudited interim condensed consolidated statement of operations. We consider these securities to be available for use in our current year operations, and therefore classify them as current even if we do not dispose of the securities in the following year.

Stock-based compensation

Stock-based compensation represents the cost related to stock-based awards granted to employees and directors. The Company measures stock-based compensation cost at grant date, based on the fair value of the award estimated under the current provisions of Accounting Standards Codification (“ASC”) Topic 718, Compensation - Stock Compensation. For service stock options and restricted stock awards, the Company estimates the fair value of stock-based awards using a Black-Scholes valuation model and recognizes the cost as expense on a straight-line basis over the option’s requisite service period.

In September 2021, the Company also issued performance stock option awards that include a market condition. The grant date fair value of performance stock options is estimated using a Monte Carlo simulation model and the cost is recognized using the accelerated attribution method.

Stock-based compensation expense is recorded in cost of revenue associated with sales of fuel cell systems and related infrastructure, cost of revenue for services performed on fuel cell systems and related infrastructure, research and development expense and selling, general and administrative expenses in the consolidated statements of operations based on the employees’ respective function.

Recent Accounting Pronouncements

Recently Adopted Accounting Guidance

Other than the adoption of the accounting guidance mentioned in our 2020 10-K and ASU 2020-06, there have been no other significant changes in our reported financial position or results of operations and cash flows resulting from the adoption of new accounting pronouncements.

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the impact of recognizing the equity component of the Company’s convertible notes at issuance and the subsequent accounting impact of additional interest expense from debt discount amortization. Future interest expense of the convertible notes will be lower as a result of adoption of this guidance and net loss per share will be computed using the if-converted method for convertible instruments. The cumulative effect of the accounting change upon adoption on January 1, 2021 increased the carrying amount of the 3.75% Convertible Senior Notes by $120.6 million, reduced accumulated deficit by $9.6 million and reduced additional paid-in capital by $130.2 ~~million.~~million as of September 30, 2021.

Recent Accounting Guidance Not Yet Effective

All issued but not yet effective accounting and reporting standards as of ~~June~~September 30, 2021 are either not applicable to the Company or are not expected to have a material impact on the Company.

3. Extended Maintenance Contracts

~~Table of Contents~~

scale for service labor, and improvements in design and operations of infrastructure. If the expected cost saving initiatives are not realized, this will increase the estimated costs of providing services and ~~could~~will adversely affect our estimated contract loss accrual. Further, we continue to work to improve quality and reliability; however, unanticipated additional quality issues or warranty claims may arise and additional material charges may be incurred in the future. These quality issues could also adversely affect our contract loss accrual. Service costs during 2021 have been higher than previously estimated. The Company has undertaken or will soon undertake several initiatives to extend the life and improve the reliability of its equipment. As a result of these initiatives and our additional expectation that the increase in certain costs attributable to the global pandemic will abate, the Company believes that its contract loss accrual is sufficient. However, if elevated service costs persist, the Company will adjust its estimated future service costs and increase its contract loss accrual estimate.

The following table shows the rollforward of balance in the accrual for loss contracts, including changes due to the passage of time, additions, and changes in estimates (in thousands):


	Six months ended		Year ended		Nine months ended		Year ended
	June 30, 2021		December 31, 2020		September 30, 2021		December 31, 2020
Beginning Balance	$	24,013	$	3,702	$	24,013	$	3,702
Provision for Loss Accrual		8,179		35,473		15,641		35,473
Released to Service Cost of Sales		(3,780)		(2,348)		(6,055)		(2,348)
Released to Provision for Warrants		—		(12,814)		—		(12,814)
Ending Balance	$	28,412	$	24,013	$	33,599	$	24,013

4. Earnings Per Share

Basic earnings per common stock are computed by dividing net loss attributable to common stockholders by the weighted average number of common stock outstanding during the reporting period. After January 1, 2021, the date of the adoption of ASU 2020-06, in periods when we have net income, the shares of our common stock subject to the convertible notes outstanding during the period will be included in our diluted earnings per share under the if-converted method. Since the Company is in a net loss position, all common stock equivalents would be considered anti-dilutive and are therefore not included in the determination of diluted earnings per share. Accordingly, basic and diluted loss per share are the same.

The potentially dilutive securities are summarized as follows:

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	At June 30,		At September 30,
	2021	2020	2021	2020
Stock options outstanding (1)	9,165,066	16,273,120	24,784,288	14,434,983
Restricted stock outstanding (2)	6,511,808	4,455,484	4,960,376	5,992,974
Common stock warrants (3)	83,518,821	110,573,392	80,017,181	110,573,392
Convertible Senior Notes (4)	39,170,766	72,872,730	39,170,766	56,872,730
Number of dilutive potential shares of common stock	138,366,461	204,174,726	148,932,611	187,874,079

(1)

During the three months ended ~~June~~September 30, 2021 and 2020, the Company granted ~~117,500~~15,732,335 and ~~89,649~~3,192,400 stock options, respectively. During the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, the Company granted ~~698,500~~16,430,835 and ~~174,649~~3,367,049 stock options, respectively.

(2)

During the three months ended ~~June~~September 30, 2021 and 2020, the Company granted ~~98,000~~1,159,856 and ~~96,649~~3,095,000 shares of restricted stock, respectively. During the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, the Company granted ~~653,000~~1,812,856 and ~~96,649~~3,189,649 shares of restricted stock, respectively.

(3)

In April 2017, the Company issued a warrant to acquire up to 55,286,696 shares of the Company’s common stock as part of a transaction agreement with Amazon, subject to certain vesting events, as described in Note 12, “Warrant Transaction Agreements.” The warrant had been exercised with respect to ~~13,960,354~~17,461,994 shares of the Company’s common stock as of ~~June~~September 30, 2021.

In July 2017, the Company issued a warrant to acquire up to 55,286,696 shares of the Company’s common stock as part of a transaction agreement with Walmart, subject to certain vesting events, as described in Note 12, “Warrant Transaction Agreements.” The warrant had been exercised with respect to 13,094,217 shares of the Company’s common stock as of ~~June~~September 30, 2021.

(4)

In March 2018, the Company issued $100.0 million in aggregate principal amount of the 5.5% Convertible Senior Notes due 2023 (the “5.5% Convertible Senior Notes”). In May 2020, the Company repurchased $66.3 million of the 5.5% Convertible Senior Notes and in the fourth quarter of 2020, $33.5 million of the 5.5% Convertible Senior Notes were converted into approximately 14.6 million shares of common stock. The remaining $160 thousand aggregate principal amount of the 5.5% Convertible Senior Notes were converted into 69,808 shares of common stock in January 2021. In September 2019, the Company issued $40.0 million in aggregate principal amount of the 7.5% Convertible Senior Note due 2023 (the “7.5% Convertible Senior Note”), which was fully converted into 16.0 million shares of common stock on July 1, 2020. In May 2020,

~~Table of Contents~~

the Company issued ~~the 3.75% Convertible Senior Notes and repurchased $66.3~~$212.5 million of the 5.5% Convertible Senior Notes. In the fourth quarter of 2020, $33.5 million of the remaining 5.5% Convertible Senior Notes converted into 14.6 million shares of common stock. The remaining $160 thousandin aggregate principal amount of the ~~5.5%~~3.75% Convertible Senior ~~Notes were converted in January 2021.~~Notes. During the first quarter of 2021, $15.2 million of the 3.75% Convertible Senior Notes were converted ~~resulting in the issuance of~~into 3,016,036 shares of common stock. There were no0 conversions in the second or third quarter of 2021.

5. Inventory

Inventory as of ~~June~~September 30, 2021 and December 31, 2020 consisted of the following (in thousands):


	June 30,		December 31,		September 30,		December 31,
	2021		2020		2021		2020
Raw materials and supplies - production locations	$	131,932	$	92,221	$	147,085	$	92,221
Raw materials and supplies - customer locations		14,096		12,405		13,611		12,405
Work-in-process		58,147		29,349		61,525		29,349
Finished goods		5,645		5,411		7,593		5,411
Inventory	$	209,820	$	139,386	$	229,814	$	139,386

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6. Equipment Related to Power Purchase Agreements and Fuel Delivered to Customers, net

Equipment related to power purchase agreements and fuel delivered to customers, net at ~~June~~September 30, 2021 and December 31, 2020 consisted of the following (in thousands):


	June 30,		December 31,		September 30,		December 31,
	2021		2020		2021		2020
Equipment related to power purchase agreements and fuel delivered to customers	$	97,547	$	92,736	$	99,230	$	92,736
Less: accumulated depreciation		(18,629)		(16,929)		(20,519)		(16,929)
Equipment related to power purchase agreements and fuel delivered to customers, net		78,918		75,807		78,711		75,807

As of ~~June~~September 30, 2021, the Company had deployed long-lived assets at customer sites that had associated Power Purchase Agreements (“PPAs”). These PPAs expire over the next one to ten years. PPAs contain termination clauses with associated penalties, the amount of which cause the likelihood of cancellation to be remote.

Depreciation expense was ~~$2.0~~$1.9 million and ~~$2.2~~$2.3 million for the three months ended ~~June~~September 30, 2021 and 2020, respectively. Depreciation expense was ~~$3.8~~$5.7 million and ~~$4.3~~$6.6 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

The Company terminated its contractual relationship with a fuel provider effective March 31, 2021. The Company has historically leased fuel tanks from this provider. As a result of this termination, the Company recognized approximately $16.0 million of various costs in the six months ended June 30, 2021, primarily for removal of tanks, reimbursement of unamortized installation costs, costs to temporarily provide customers with fuel during the transition period, and certain other contract settlement ~~costs. These~~ costs, ~~amounted to approximately $16.0 million for the six months ended June 30, 2021,~~ which ~~are~~were recorded in the Company’s unaudited interim condensed consolidated statement of operations as cost of revenue – fuel delivered to ~~customers for the six months ended June 30, 2021.~~customers. The Company also purchased certain fuel tanks from the fuel provider during the six months ended June 30, 2021. NaN such purchases were made during the three months ended ~~June~~September 30, 2021.

7. Property, Plant and Equipment

Property, plant and equipment at ~~June~~September 30, 2021 and December 31, 2020 ~~consists~~consisted of the following (in thousands):

June 30, 2021

December 31, 2020
Land

1,165

1,165
Leasehold improvements

$
1,401

$
1,121


	September 30, 2021		December 31, 2020
Land		1,165		1,165
Leasehold improvements	$	1,440	$	1,121
Construction in progress		100,136		15,590
Software, machinery, and equipment		94,200		78,859
Property, plant, and equipment		196,941		96,735
Less: accumulated depreciation		(27,355)		(22,186)
Property, plant, and equipment, net	$	169,586	$	74,549

~~Table~~Construction in progress is primarily comprised of ~~Contents~~construction of hydrogen production plants and the Gigafactory in Rochester. Completed assets are transferred to their respective asset classes, and depreciation begins when an asset is ready for its intended use. Interest on outstanding debt is capitalized during periods of capital asset construction and amortized over the useful lives of the related assets. During the nine months ended September 30, 2021, we capitalized $2.6 million of interest. Capitalized interest in 2020 was 0t significant.

Software, machinery and equipment

133,349

94,449
Property, plant, and equipment

135,915

96,735
Less: accumulated depreciation

(25,440)

(22,186)
Property, plant, and equipment, net

$
110,475

$
74,549

Depreciation expense related to property, plant and equipment was ~~$1.6~~$1.9 million and ~~$0.9~~$1.4 million for the three months ended ~~June~~September 30, 2021 and 2020, respectively. Depreciation expense related to property, plant and equipment was ~~$3.3~~$5.2 million and ~~$1.8~~$3.2 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

8. Intangible Assets and Goodwill

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~~8. Intangible Assets and Goodwill~~

The gross carrying amount and accumulated amortization of the Company’s acquired identifiable intangible assets as of ~~June~~September 30, 2021 were as follows (in thousands):


	Weighted Average	Gross Carrying		Accumulated				Weighted Average	Gross Carrying		Accumulated
	Amortization Period	Amount		Amortization		Total		Amortization Period	Amount		Amortization		Total
Acquired technology	10 years	$	13,150	$	(4,624)	$	8,526	10 years	$	13,040	$	(4,888)	$	8,152
Customer relationships, Non-compete agreements, Backlog & Trademark	6 years		890		(364)		526	6 years		890		(398)		492
In process research and development	Indefinite		29,000		—		29,000	Indefinite		29,000		—		29,000
		$	43,040	$	(4,988)	$	38,052		$	42,930	$	(5,286)	$	37,644

The gross carrying amount and accumulated amortization of the Company’s acquired identifiable intangible assets as of December 31, 2020 were as follows (in thousands):


	Weighted Average	Gross Carrying		Accumulated
	Amortization Period	Amount		Amortization		Total
Acquired technology	10 years	$	13,697	$	(4,042)	$	9,655
Customer relationships, Non-compete agreements, Backlog & Trademark	6 years		890		(294)		596
In process research and development	Indefinite		29,000		—		29,000
		$	43,587	$	(4,336)	$	39,251

The change in the gross carrying amount of the acquired technology from December 31, 2020 to ~~June~~September 30, 2021 was primarily due to foreign currency translation.

Amortization expense for acquired identifiable intangible assets for the three months ended ~~June~~September 30, 2021 and 2020 was $0.4 million and ~~$0.2~~$0.3 million, respectively. Amortization expense for acquired identifiable intangible assets for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020 was ~~$0.7~~$1.1 million and ~~$0.4~~$0.8 million, respectively.

The estimated amortization expense for subsequent years is as follows (in thousands):


Remainder of 2021	$	732	$	363
2022		1,463		1,453
2023		1,463		1,453
2024		1,442		1,431
2025 and thereafter		3,952		3,944
Total	$	9,052	$	8,644

Goodwill was ~~$72.1~~$71.9 million and $72.4 million as of ~~June~~September 30, 2021 and December 31, 2020, respectively, which decreased ~~$304~~$531 thousand due to currency translation loss for HyPulsion S.A.S., our French subsidiary. There were 0 impairments during the ~~six~~nine months ended ~~June~~September 30, 2021 or the year ended December 31, 2020.

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9. Long-Term Debt

In March 2019, the Company entered into a loan and security agreement, as amended (the “Loan Agreement”), with Generate Lending, LLC (“Generate Capital”), providing for a secured term loan facility in the amount of $100 million (the “Term Loan Facility”).

During the year ended December 31, 2020, the Company, under another series of amendments to the Loan Agreement, borrowed an incremental $100.0 million. As part of the amendment to the Loan Agreement, the Company’s interest rate on the secured term loan facility was reduced to 9.50% from 12.00% per annum, and the maturity date was extended to October 31, 2025 from October 6, 2022. On ~~June~~September 30, 2021, the outstanding balance under the Term Loan Facility was ~~$150.8~~$137.7 million. In addition to the Term Loan Facility, on ~~June~~September 30, 2021, there was approximately ~~$10.0~~$9.5 million of debt outstanding related to the United Hydrogen Group, Inc. acquisition.

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The Loan Agreement includes covenants, limitations, and events of default customary for similar facilities. Interest and a portion of the principal amount is payable on a quarterly basis. Principal payments are funded in part by releases of restricted cash, as described in Note 19, “Commitments and Contingencies.” Based on the amortization schedule as of ~~June~~September 30, 2021, the aforementioned loan balance under the Term Loan Facility will be fully paid by October 31, 2025. The Company is in compliance with, or has obtained waivers for, all debt covenants.

The Term Loan Facility is secured by substantially all of the Company’s and the guarantor subsidiaries’ assets, including, among other assets, all intellectual property, all securities in domestic subsidiaries and 65% of the securities in foreign subsidiaries, subject to certain exceptions and exclusions.

The Loan Agreement provides that if there is an event of default due to the Company’s insolvency or if the Company fails to perform in any material respect the servicing requirements for fuel cell systems under certain customer agreements, which failure would entitle the customer to terminate such customer agreement, replace the Company or withhold the payment of any material amount to the Company under such customer agreement, then Generate Capital has the right to cause Proton Services Inc., a wholly owned subsidiary of the Company, to replace the Company in performing the maintenance services under such customer agreement.

As of ~~June~~September 30, 2021, the Term Loan Facility requires the principal balance as of each of the following dates not to exceed the following (in thousands):


December 31, 2021	$	127,317
December 31, 2022		93,321
December 31, 2023		62,920
December 31, 2024		33,692
December 31, 2025		—

10. Convertible Senior Notes

3.75% Convertible Senior Notes

On May 18, 2020, the Company issued $200.0 million in aggregate principal amount of 3.75% Convertible Senior Notes due June 1, 2025, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended ~~(“the Securities~~(the “Securities Act”). On May 29, 2020, the Company issued an additional $12.5 million in aggregate principal amount of 3.75% Convertible Senior Notes.

At issuance in May 2020, the total net proceeds from the 3.75% Convertible Senior Notes were as follows:

Amount

(in thousands)
Principal amount
$
212,463

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			Amount
			(in thousands)
Principal amount			$	212,463
Less initial purchasers' discount		(6,374)		(6,374)
Less cost of related capped calls		(16,253)		(16,253)
Less other issuance costs		(617)		(617)
Net proceeds	$	189,219	$	189,219

The 3.75% Convertible Senior Notes bear interest at a rate of 3.75% per year, payable semi-annually in arrears on June 1 and December 1 of each year, beginning on December 1, 2020. The notes will mature on June 1, 2025, unless earlier converted, redeemed or repurchased in accordance with their terms.

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Company’s $100 million in aggregate principal amount of the 5.5% Convertible Senior Notes, effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the collateral securing such indebtedness, and structurally subordinated to all indebtedness and other liabilities, including trade payables, of its current or future subsidiaries.

Holders of the 3.75% Convertible Senior Notes may convert their notes at their option at any time prior to the close of the business day immediately preceding December 1, 2024 in the following circumstances:

during any calendar quarter commencing after March 31, 2021 if the last reported sale price of the Company’s common stock exceeds 130% of the conversion price for each of 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;

during the five business days after any five consecutive trading day period (such five consecutive trading day period, the measurement period) in which the trading price per $1,000 principal amount of the 3.75% Convertible Senior 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;

if the Company calls any or all of the 3.75% Convertible Senior Notes for redemption, any such notes that have been called for redemption may be converted at any time prior to the close of business on the second scheduled trading day immediately preceding the redemption date; or

upon the occurrence of specified corporate events, as described in the indenture governing the 3.75% Convertible Senior Notes.

On or after December 1, 2024, the holders of the 3.75% Convertible Senior Notes may convert all or any portion of their notes at any time prior to the close of business on the second scheduled trading day immediately preceding the maturity date regardless of the foregoing conditions.

The initial conversion rate for the 3.75% Convertible Senior Notes is 198.6196 shares of the Company’s common stock per $1,000 principal amount of notes, which is equivalent to an initial conversion price of approximately $5.03 per share of the Company’s common stock, subject to adjustment upon the occurrence of specified events. Upon conversion, the Company will pay or deliver, as applicable, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election. During the three months ended ~~June~~September 30, 2021, certain conditions allowing holders of the 3.75% Convertible Senior Notes to convert were met. The 3.75% Convertible Senior Notes are therefore convertible during the calendar quarter ending September 30, 2021 at the conversion rate discussed above. During the ~~six~~nine months ended ~~June~~September 30, 2021, $15.2 million of the 3.75% Convertible Senior Notes were converted and the Company issued approximately 3.0 million shares of common stock in conjunction with these conversions.

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In addition, following certain corporate events or following issuance of a notice of redemption, the Company will increase the conversion rate for a holder who elects to convert its notes in connection with such a corporate event or convert its notes called for redemption during the related redemption period in certain circumstances.

The 3.75% Convertible Senior Notes will be redeemable, in whole or in part, at the Company’s option at any time, and from time to time, on or after June 5, 2023 and before the 41^st scheduled trading day immediately before the maturity date, at a cash redemption price equal to 100% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest, if any, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price then in effect for at least 20 trading days (whether or not consecutive), including at least one of the three trading days immediately preceding the date the Company sends the related redemption notice, during any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company sends such redemption notice.

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If the Company undergoes a “fundamental change” (as defined in the Indenture), holders may require the Company to repurchase their notes for cash all or any portion of their notes at a fundamental change repurchase price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest, to, but excluding, the fundamental change repurchase date.

The Company accounts for the 3.75% Convertible Senior Notes as a liability. We incurred transaction costs related to the issuance of the 3.75% Convertible Senior Notes of approximately $7.0 million, consisting of initial purchasers’ discount of approximately $6.4 million and other issuance costs of $0.6 million which were recorded as debt issuance cost (presented as contra debt in the unaudited interim condensed consolidated balance sheets) and are being amortized to interest expense over the term of the 3.75% Convertible Senior Notes.

The 3.75% Convertible Senior Notes consisted of the following (in thousands):


	June 30,		September 30,
	2021		2021
Principal amounts:
Principal	$	197,278	$	197,278
Unamortized debt issuance costs (1)		(5,267)		(4,958)
Net carrying amount	$	192,011	$	192,320

Included in the unaudited interim condensed consolidated balance sheets within the 3.75% Convertible Senior Notes, net and amortized over the remaining life of the notes using the effective interest rate method.

The following table summarizes the total interest expense and effective interest rate related to the 3.75% Convertible Senior Notes (in thousands, except for effective interest rate):

June 30,

2021
Interest expense
$
1,850
Amortization of debt issuance costs

306
Total

2,156

Effective interest rate

4.50%


	September 30,
	2021
Interest expense	$	1,849
Amortization of debt issuance costs		306
Total		2,155

Effective interest rate		4.50%

Based on the closing price of the Company’s common stock of ~~$34.19~~$25.54 on ~~June~~September 30, 2021, the if-converted value of the notes was greater than the principal amount. The estimated fair value of the note at ~~June~~September 30, 2021 was approximately ~~$1.3~~$1.0 billion. The fair value estimation was primarily based on an active stock exchange trade on ~~June 24,~~September 30, 2021 of the 3.75% Convertible Senior ~~Convertible Note.~~Notes. See Note 15, “Fair Value Measurements,” for a description of the fair value hierarchy.

Capped Call

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The 3.75% Notes Capped Call covers, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that underlie the initial 3.75% Convertible Senior Notes and is generally expected to reduce potential dilution to the Company’s common stock upon any conversion of the 3.75% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. The cap price of the 3.75% Notes Capped Call is initially $6.7560 per share, which represents a premium of approximately 60%over the last then-reported sale price of the Company’s common stock of $4.11 per share on the date of the transaction and is subject to certain adjustments under the terms of the 3.75% Notes Capped Call. The 3.75% Notes Capped Call becomes exercisable if the conversion option is exercised.

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The net cost incurred in connection with the 3.75% Notes Capped Call were recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheets.

5.5% Convertible Senior Notes

In March 2018, the Company issued $100.0 million in aggregate principal amount of the 5.5% Convertible Senior Notes due on March 15, 2023, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act.

In May 2020, the Company used a portion of the net proceeds from the issuance of the 3.75% Convertible Senior Notes to finance the cash portion of the partial repurchase of the 5.5% Convertible Senior Notes, which consisted of a repurchase of approximately $66.3 million in aggregate principal amount of the 5.5% Convertible Senior Notes in privately-negotiated transactions for aggregate consideration of $128.9 million, consisting of approximately $90.2 million in cash and approximately 9.4 million shares of the Company’s common stock. The partial repurchase of the 5.5% Convertible Senior Notes resulted in a $13.2 million gain on early debt extinguishment. In the fourth quarter of 2020, $33.5 million of the remaining 5.5% Convertible Senior Notes were converted into 14.6 million shares of common stock which resulted in a gain of approximately $4.5 million which was recorded on the consolidated statement of operations on the gain (loss) on extinguishment of debt line.

On January 7, 2021, the remaining aggregate principal of $160 thousand aggregate principal amount of the 5.5% Convertible Senior Notes were converted into 69,808 shares of common stock. Interest expense and amortization for the period were immaterial.

Capped Call

In conjunction with the pricing of the 5.5% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (the “5.5% Notes Capped Call”) with certain counterparties at a price of $16.0 million to reduce the potential dilution to the Company’s common stock upon any conversion of the 5.5% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted 5.5% Convertible Senior Notes, as the case may be. The net cost incurred in connection with the 5.5% Notes Capped Call has been recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheets.

In conjunction with the pricing of the partial repurchase of the 5.5% Convertible Senior Notes, the Company terminated 100% of the 5.5% Notes Capped Call on June 5, 2020. As a result of the termination, the Company received $24.2 million, which was recorded in additional paid-in capital in the unaudited interim condensed consolidated balance sheets.

Common Stock Forward

In connection with the issuance of the 5.5% Convertible Senior Notes, the Company also entered into a forward stock purchase transaction ~~(“the Common~~(the “Common Stock Forward”), pursuant to which the Company agreed to purchase 14,397,906 shares of its common stock for settlement on or about March 15, 2023. In connection with the issuance of the 3.75% Convertible Senior Notes and the partial repurchase of the 5.5% Convertible Senior Notes, the Company amended and extended the maturity of the Common Stock Forward to June 1, 2025. The number of shares of common stock that

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the Company will ultimately repurchase under the Common Stock Forward is subject to customary anti-dilution adjustments. The Common Stock Forward is subject to early settlement or settlement with alternative consideration in the event of certain corporate transactions.

The net cost incurred in connection with the Common Stock Forward of $27.5 million was recorded as an increase in treasury stock in the unaudited interim condensed consolidated balance sheets. The related shares were accounted for as a repurchase of common stock.

The book value of the 5.5% Notes Capped Call and Common Stock Forward are not remeasured.

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During the fourth quarter of 2020, the Common Stock Forward was partially settled and, as a result, the Company received 4.4 million shares of its common stock. During the ~~first quarter of~~three months ended September 30, 2021, ~~5.9 million~~0 shares were settled and ~~were~~ received by the Company. During the ~~second quarter of~~nine months ended September 30, 2021, ~~an additional 2.2~~8.1 million shares were settled and received by the Company.

11. Stockholders’ Equity

Preferred Stock

The Company has authorized 5.0 million shares of preferred stock, par value $0.01 per share. The Company’s certificate of incorporation provides that shares of preferred stock may be issued from time to time in one or more series. The Company’s Board of Directors is authorized to fix the voting rights, if any, designations, powers, preferences, qualifications, limitations and restrictions thereof, applicable to the shares of each series.

The Company has authorized Series A Junior Participating Cumulative Preferred Stock, par value $0.01 per share. As of ~~June~~September 30, 2021 and December 31, 2020, there were 0 shares of Series A Junior Participating Cumulative Preferred Stock issued and outstanding.

Common Stock and Warrants

The Company has one class of common stock, par value $0.01 per share. Each share of the Company’s common stock is entitled to 1 vote on all matters submitted to stockholders.

In February 2021, the Company completed the previously announced sale of its common stock in connection with a strategic partnership with SK Holdings Co., Ltd. (“SK Holdings”) to accelerate the use of hydrogen as an alternative energy source in Asian markets. The Company sold 54,966,188 shares of its common stock to a subsidiary of SK Holdings at a purchase price of $29.2893 per share, or an aggregate purchase price of approximately $1.6 billion.

In January and February 2021, the Company issued and sold in a registered equity offering an aggregate of 32.2 million shares of its common stock at a purchase price of $65.00 per share for net proceeds of approximately ~~$1.8~~$2.0 billion.

In November 2020, the Company issued and sold in a registered equity offering an aggregate of 43,700,000 shares of its common stock at a purchase price of $22.25 per share for net proceeds of approximately $927.3 million.

In August 2020, the Company issued and sold in a registered equity offering an aggregate of 35,276,250 shares of its common stock at a purchase price of $10.25 per share for net proceeds of approximately $344.4 million.

~~There were 570,922,157 and 458,051,401 shares of common stock outstanding as of June 30, 2021 and December 31, 2020, respectively.~~

During 2017, warrants to purchase up to 110,573,392 shares of common stock were issued in connection with transaction agreements with Amazon and Walmart, as discussed in Note 12, “Warrant Transaction Agreements.” At both ~~June~~September 30, 2021 and December 31, 2020, a total of 68,380,913 warrants had vested. Warrants were exercised with respect to

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5,819,652 shares during the fourth quarter of 2020. InFor the ~~first quarter of~~three and nine months ended September 30, 2021, warrants were exercised with respect to ~~16,489,014~~3,501,640 and 24,736,559 shares of common ~~stock. In the second quarter of 2021, warrants were exercised with respect to an additional 4,745,905 shares of common stock.~~stock, respectively. These warrants are measured at fair value at the time of grant or modification and are classified as equity instruments on the unaudited interim condensed consolidated balance sheets.

At Market Issuance Sales Agreement

On April 13, 2020, the Company entered into the At Market Issuance Sales Agreement with B. Riley Financial (“B. Riley”), as sales agent, pursuant to which the Company may offer and sell, from time to time through B. Riley, shares of Company common stock having an aggregate offering price of up to $75.0 million. As of the date of this filing, the Company has not issued any shares of common stock pursuant to the At Market Issuance Sales Agreement.

12. Warrant Transaction Agreements

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Amazon Transaction Agreement

On April 4, 2017, the Company and Amazon entered into a Transaction Agreement (the “Amazon Transaction Agreement”), pursuant to which the Company agreed to issue to Amazon.com NV Investment Holdings LLC, a wholly owned subsidiary of Amazon, a warrant (the “Amazon Warrant”) to acquire up to 55,286,696 shares of the Company’s common stock (the “Amazon Warrant Shares”), subject to certain vesting events described below. The Company and Amazon entered into the Amazon Transaction Agreement in connection with existing commercial agreements between the Company and Amazon with respect to the deployment of the Company’s GenKey fuel cell technology at Amazon distribution centers. The existing commercial agreements contemplate, but do not guarantee, future purchase orders for the Company’s fuel cell technology. The vesting of the Amazon Warrant Shares was conditioned upon payments made by Amazon or its affiliates (directly or indirectly through third parties) pursuant to the existing commercial agreements.

Under the terms of the original Amazon Warrant, the first tranche of the 5,819,652 Amazon Warrant Shares vested upon execution of the Amazon Warrant, and the remaining Amazon Warrant Shares vest based on Amazon’s payment of up to $600.0 million to the Company in connection with Amazon’s purchase of goods and services from the Company. The $6.7 million fair value of the first tranche of the Amazon Warrant Shares was recognized as selling, general and administrative expense upon execution of the Amazon Warrant.

Provision for the second and third tranches of Amazon Warrant Shares is recorded as a reduction of revenue because they represent consideration payable to a customer.

The fair value of the second tranche of Amazon Warrant Shares was measured at January 1, 2019, upon adoption of ASU 2019-08. The second tranche of 29,098,260 Amazon Warrant Shares vested in 4 equal installments, as Amazon or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate. The last installment of the second tranche vested on November 2, 2020. Revenue reductions of $9.0 million, $4.1 million and $9.8 million associated with the second tranche of Amazon Warrant Shares were recorded in 2020, 2019 and 2018, respectively, under the terms of the original Amazon Warrant.

Under the terms of the original Amazon Warrant, the third tranche of 20,368,784 Amazon Warrant Shares vests in 8 equal installments, as Amazon or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The measurement date for the third tranche of Amazon Warrant Shares was November 2, 2020, when their exercise price was determined, as discussed further below. The fair value of the third tranche of Amazon Warrant Shares was determined to be $10.57 each. During 2020, revenue reductions of $24.1 million associated with the third tranche Amazon Warrant Shares were recorded under the terms of the original Amazon Warrant, prior to the December 31, 2020 waiver described below.

On December 31, 2020, the Company waived the remaining vesting conditions under the Amazon Warrant, which resulted in the immediate vesting of all the third tranche of the Amazon Warrant Shares and recognition of an additional $399.7 million reduction to revenue.

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The $399.7 million reduction to revenue resulting from the December 31, 2020 waiver was determined based upon a probability assessment of whether the underlying shares would have vested under the terms of the original Amazon Warrant. Based upon the Company’s projections of probable future cash collections from Amazon (i.e., a Type I share based payment modification), a reduction of revenue associated with 5,354,905 Amazon Warrant Shares was recognized at their previously measured November 2, 2020 fair value of $10.57 per warrant. A reduction of revenue associated with the remaining 12,730,490 Amazon Warrant Shares was recognized at their December 31, 2020 fair value of $26.95 each, based upon the Company’s assessment that associated future cash collections from Amazon were not deemed probable (i.e., a Type III share based payment modification).

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31, 2020 waiver. Additionally, for the year ended December 31, 2020, the Company recorded a reduction to the provision for warrants of $12.8 million in connection with the release of the service loss accrual.

At December 31, 2020, all 55,286,696 of the Amazon Warrant Shares had vested. For service contracts entered into prior to December 31, 2020, the warrant charge associated with that revenue was capitalized and is subsequently amortized over the life of the service contract. The total amount of provision for common stock warrants recorded as a reduction of revenue for the Amazon Warrant during the three months ended ~~June~~September 30, 2021 and 2020 was ~~$105~~ $106thousand and ~~$3.4~~$17.3 million, respectively. The amount of provision for common stock warrants recorded as a reduction of revenue for the Amazon Warrant during the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020 was ~~$209~~$315 thousand and ~~$4.7~~$22.0 million, respectively. During the three and nine months ended ~~March 31, 2021 and June~~September 30, 2021, the Amazon Warrant was exercised with respect to ~~9,214,449~~3,501,640 and 17,461,994 shares of common stock, ~~and 4,745,905 shares of common stock. In July 2021, the Amazon Warrant was exercised with respect to an additional 3,501,640 shares of common stock.~~ respectively.

The exercise price for the first and second tranches of Amazon Warrant Shares was $1.1893 per share. The exercise price of the third tranche of Amazon Warrant Shares was $13.81 per share, which was determined pursuant to the terms of the Amazon Warrant as an amount equal to 90 percent (90%) of the 30-day volume weighted average share price of the Company’s common stock as of November 2, 2020, the final vesting date of the second tranche of Amazon Warrant Shares. The Amazon Warrant is exercisable through April 4, 2027. The Amazon Warrant provides for net share settlement that, if elected by the holder, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Amazon Warrant provides for certain adjustments that may be made to the exercise price and the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. The Amazon Warrant is classified as an equity instrument.

Fair value of the Amazon Warrant at December 31, 2020 and November 2, 2020 was based on the Black Scholes Option Pricing Model, which is based, in part, upon level 3 unobservable inputs for which there is little or no market data, requiring the Company to develop its own assumptions.

The Company used the following assumptions for its Amazon Warrant:


	December 31, 2020	November 2, 2020
Risk-free interest rate	0.58%	0.58%
Volatility	75.00%	75.00%
Expected average term	6.26	6.42
Exercise price	$13.81	$13.81
Stock price	$33.91	$15.47

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Walmart Transaction Agreement

On July 20, 2017, the Company and Walmart entered into a Transaction Agreement (the “Walmart Transaction Agreement”), pursuant to which the Company agreed to issue to Walmart a warrant (the “Walmart Warrant”) to acquire up to 55,286,696 shares of the Company’s common stock, subject to certain vesting events (the “Walmart Warrant Shares”). The Company and Walmart entered into the Walmart Transaction Agreement in connection with existing commercial agreements between the Company and Walmart with respect to the deployment of the Company’s GenKey fuel cell technology across various Walmart distribution centers. The existing commercial agreements contemplate, but do not guarantee, future purchase orders for the Company’s fuel cell technology. The vesting of the warrant shares conditioned upon payments made by Walmart or its affiliates (directly or indirectly through third parties) pursuant to transactions entered into after January 1, 2017 under existing commercial agreements.

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of operations during 2017. All future provision for common stock warrants is measured based on their grant-date fair value and recorded as a charge against revenue. The second tranche of 29,098,260 Walmart Warrant Shares vests in 4 installments of 7,274,565 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate. The exercise price for the first and second tranches of Walmart Warrant Shares is $2.1231 per share. After Walmart has made payments to the Company totaling $200.0 million, the third tranche of 20,368,784 Walmart Warrant Shares will vest in 8 installments of 2,546,098 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The exercise price of the third tranche of Walmart Warrant Shares will be an amount per share equal to ninety percent (90%) of the 30-day volume weighted average share price of the common stock as of the final vesting date of the second tranche of Walmart Warrant Shares, provided that, with limited exceptions, the exercise price for the third tranche will be no lower than $1.1893. The Walmart Warrant is exercisable through July 20, 2027.

The Walmart Warrant provides for net share settlement that, if elected by the holder, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Walmart Warrant provides for certain adjustments that may be made to the exercise price and the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. The Walmart Warrant is classified as an equity instrument.

At both ~~June~~September 30, 2021 and December 31, 2020, 13,094,217 of the Walmart Warrant Shares had vested. The total amount of provision for common stock warrants recorded as a reduction of revenue for the Walmart Warrant during the three months ended ~~June~~September 30, 2021 and 2020 was ~~$1.6~~$1.2 million and ~~$1.0~~$1.3 million, respectively. The amount of provision for common stock warrants recorded as a reduction of revenue for the Walmart Warrant during the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020 was ~~$3.2~~$4.4 million and ~~$1.9~~$3.2 million, respectively. During the three months ended March 31, 2021, the Walmart Warrant had been exercised with respect to 7,274,565 shares of common stock. There were 0 exercises during the ~~three months ended June 30,~~second or third quarter of 2021.

13. Revenue

Disaggregation of revenue

The following table provides information about disaggregation of revenue (in thousands):


Major products/services lines
	Three months ended June 30,				Six months ended June 30,				Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020		2021		2020		2021		2020
Sales of fuel cell systems	$	59,169	$	40,785	$	85,588	$	55,425	$	67,032	$	51,998	$	152,620	$	107,515
Sale of hydrogen installations and other infrastructure										48,967		31,664		109,429		44,361
Services performed on fuel cell systems and related infrastructure										6,677		6,829		18,397		19,586
Power Purchase Agreements										9,321		6,629		25,508		19,629
Fuel delivered to customers										11,556		9,831		33,804		24,536
Other										369		97		679		235
Net revenue									$	143,922	$	107,048	$	340,437	$	215,862

Contract balances

The following table provides information about receivables, contract assets and contract liabilities from contracts with customers (in thousands):

2122

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Sale of hydrogen installations and other infrastructure

40,109

6,961

60,462

12,789
Services performed on fuel cell systems and related infrastructure

5,675

6,236

11,720

12,757
Power Purchase Agreements

8,361

6,579

16,187

13,000
Fuel delivered to customers

11,121

7,372

22,248

14,705
Other

122

62

310

138
Net revenue

$
124,557

$
67,995

$
196,515

$
108,814

~~Contract balances~~

~~The following table provides information about receivables, contract assets and contract liabilities from contracts with customers (in thousands):~~

June 30,

December 31,

2021

2020
Accounts receivable

$
91,359

$
43,041
Contract assets

11,549

18,189
Contract liabilities

93,665

76,285


	September 30,		December 31,
	2021		2020
Accounts receivable	$	132,370	$	43,041
Contract assets		9,284		18,189
Contract liabilities		115,595		76,285

Contract assets relate to contracts for which revenue is recognized on a straight-line ~~basis,~~basis; however, billings escalate over the life of a contract. Contract assets also include amounts recognized as revenue in advance of billings to customers, which are dependent upon the satisfaction of another performance obligation. These amounts are included within prepaid expenses and other current assets on the accompanying unaudited interim condensed consolidated balance sheets.

The contract liabilities relate to the advance consideration received from customers for services that will be recognized over time (primarily fuel cell and related infrastructure services) and advance consideration received from customers prior to delivery of products. As of ~~June~~September 30, 2021, the amount of contract liabilities included within deferred revenue was ~~$72.3~~$98.9 million and the amount of contract liabilities within other current liabilities was ~~$21.4~~$16.7 million on the accompanying unaudited interim condensed consolidated balance sheets. As of December 31, 2020, the amount of contract liabilities included within deferred revenue was $56.2 million and the amount of contract liabilities within other current liabilities was $20.1 million.

Significant changes in the contract assets and the contract liabilities balances during the period are as follows (in thousands):



Contract assets	~~Six~~Nine months ended
	~~June~~September 30, 2021
Transferred to receivables from contract assets recognized at the beginning of the period	$	~~(7,106)~~(13,344)
Revenue recognized and not billed as of the end of the period		~~466~~4,439
Net change in contract assets		~~(6,640)~~(8,905)

Contract liabilities

Six months ended

June 30, 2021
Increases due to cash received, net of amounts recognized as revenue during the period

$
49,628
Revenue recognized that was included in the contract liability balance as of the beginning of the period

(32,248)
Net change in contract liabilities

$
17,380

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Contract liabilities	Nine months ended
	September 30, 2021
Increases due to cash received, net of amounts recognized as revenue during the period	$	91,985
Revenue recognized that was included in the contract liability balance as of the beginning of the period		(52,675)
Net change in contract liabilities	$	39,310

Estimated future revenue

~~The following table includes estimated revenue included in the backlog expected to be recognized in the future (sales~~Sales of fuel cell systems and hydrogen installations are expected to be recognized as revenue within one ~~year;~~year and sales of services and PPAs are expected to be recognized as revenue over five to seven ~~years)~~years. The following table includes estimated revenue included in the backlog expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) at the end of the reporting period, including provision for common stock warrants (in thousands):



	June 30,		September 30,
	2021		2021
Sales of fuel cell systems	$	55,348	$	23,819
Sale of hydrogen installations and other infrastructure		52,193		58,429
Services performed on fuel cell systems and related infrastructure		103,505		105,548
Power Purchase Agreements		196,903		212,360
Fuel delivered to customers		63,632		62,609
Other rental income		2,504		2,116
Total estimated future revenue	$	474,085

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Total estimated future revenue

464,881

Contract costs

Contract costs consist of capitalized commission fees and other expenses related to obtaining or fulfilling a contract.

Capitalized contract costs at ~~June~~September 30, 2021 and December 31, 2020 were ~~$1.2 million~~$807 thousand and ~~$1.5~~$1.3 million, respectively.

14. Income Taxes

The Company did 0t record any income tax expense or benefit for the three or ~~six~~nine months ended ~~June~~September 30, 2021. The Company recognized an income tax benefit for the three and ~~six~~nine months ended ~~June~~September 30, 2020 of ~~$17.4 million. Income tax benefit for the three~~$6.6 and ~~six months ended June 30, 2020 included $12.2~~$19.0 million, respectively, resulting from the intraperiod tax allocation rules under ~~Accounting Standards Codification (“ASC”)~~ASC Topic 740-20, Intraperiod Tax Allocation, under which the Company recognized an income tax benefit resulting from a source of future taxable income attributable to the net credit to additional paid-in capital related to the issuance of the 3.75% Convertible Senior Notes, offset by the partial extinguishment of the 5.5% Convertible Senior Notes. In addition, the Company recorded ~~$5.2~~$5.0 million of income tax benefit for the ~~three and six~~nine months ended ~~June~~September 30, 2020 related to the recognition of net deferred tax liabilities in connection with the Giner, ELX Inc. acquisition, which resulted in a corresponding reduction in our deferred tax asset valuation allowance. The Company has not changed its overall conclusion with respect to the need for a valuation allowance against its net deferred tax assets, which remain fully reserved.

The net deferred tax asset generated from the Company’s net operating loss has been offset by a full valuation allowance because it is more likely than not that the tax benefits of the net operating loss carry forward will not be realized. The Company recognizes accrued interest and penalties related to unrecognized tax benefits, if any, as a component of income tax expense.

15. Fair Value Measurements

The Company records the fair value of assets and liabilities in accordance with ASC 820, Fair Value Measurement (“ASC 820”). ASC 820 defines fair value as the price received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date and in the principal or most advantageous market for that asset or liability. The fair value should be calculated based on assumptions that market participants would use in pricing the asset or liability, not on assumptions specific to the entity.

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In addition to defining fair value, ASC 820 expands the disclosure requirements around fair value and establishes a fair value hierarchy for valuation inputs. The hierarchy prioritizes the inputs into three levels based on the extent to which inputs used in measuring fair value are observable in the market. Each fair value measurement is reported in one of the three levels, which is determined by the lowest level input that is significant to the fair value measurement in its entirety.

These levels are:

●

Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities.

●

Level 2 — quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.

●

Level 3 — unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability at fair value.

The fair values of the Company’s investments are based upon prices provided by an independent pricing service. Management has assessed and concluded that these prices are reasonable and has not adjusted any prices received from the independent provider. Securities reported at fair value utilizing Level 1 inputs represent assets whose fair value is determined based upon observable unadjusted quoted market prices for identical assets in active markets. Level 2 securities represent assets whose fair value is determined using observable market information such as previous day trade prices,

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quotes from less active markets or quoted prices of securities with similar characteristics. There were 0 transfers between Level 1, Level 2, or Level 3 during the ~~six~~nine months ended ~~June~~September 30, 2021.

Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):


		As of June 30, 2021										As of September 30, 2021
		Carrying		Fair		Fair Value Measurements						Carrying		Fair		Fair Value Measurements
		Amount		Value		Level 1		Level 2		Level 3		Amount		Value		Level 1		Level 2		Level 3
Assets
Cash equivalents (1)	$	141,313	$	141,313	$	87,573	$	53,740	$	—	$	610,651	$	610,651	$	140,574	$	470,077	$	—
Corporate bonds		705,084		705,084		—		705,084		—		530,089		530,089		—		530,089		—
Commercial paper		329,722		329,722		—		329,722		—		35,795		35,795		—		35,795		—
U.S. Treasuries		170,477		170,477		170,477		—		—		169,878		169,878		169,878		—		—
Municipal debt		9,984		9,984		—		9,984		—
Certificates of deposit		27,454		27,454		—		27,454		—		17,004		17,004		—		17,004		—
Equity securities		120,302		120,302		120,302		—		—		147,649		147,649		147,649		—		—

Liabilities
Contingent consideration		9,990		9,990		—		—		9,990		18,520		18,520		—		—		18,520
Convertible senior notes		192,011		1,320,194		—		1,320,194		—		192,320		1,006,639		—		1,006,639		—
Long-term debt		160,484		160,484		—		—		160,484		147,255		147,255		—		—		147,255
Finance obligations		195,805		195,805		—		—		195,805		207,837		207,837		—		—		207,837


		As of December 31, 2020										As of December 31, 2020
		Carrying		Fair		Fair Value Measurements						Carrying		Fair		Fair Value Measurements
		Amount		Value		Level 1		Level 2		Level 3		Amount		Value		Level 1		Level 2		Level 3
Liabilities
Contingent consideration		9,760		9,760		—		—		9,760		9,760		9,760		—		—		9,760
Convertible senior notes		85,640		1,272,766		—		1,272,766		—		85,640		1,272,766		—		1,272,766		—
Long-term debt		175,402		175,402		—		—		175,402		175,402		175,402		—		—		175,402
Finance obligations		181,553		181,553		—		—		181,553		181,553		181,553		—		—		181,553

(1)

Included in “Cash and cash equivalents” in our unaudited interim condensed consolidated balance sheets as of ~~June~~September 30, 2021.

The fair values for available-for-sale and equity securities are based on prices obtained from independent pricing services. Available-for-sale securities are characterized as Level 2 assets, as their fair values are determined using observable market inputs. Equity securities are characterized as Level 1 assets, as their fair values are determined using active markets for identical assets.

Financial instruments not recorded at fair value on a recurring basis include equity method investments that have not been remeasured or impaired in the current period, such as our investment in HyVia.

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16. Operating and Finance Lease Liabilities

As of ~~June~~September 30, 2021, the Company had operating leases, as lessee, primarily associated with sale/leaseback transactions that are partially secured by restricted cash, security deposits and pledged escrows (see also Note 1, “Nature of Operations”) as summarized below. These leases expire over the next one to nine years. Minimum rent payments under operating leases are recognized on a straight-line basis over the term of the lease.

Leases contain termination clauses with associated penalties, the amount of which cause the likelihood of cancellation to be remote. At the end of the lease term, the leased assets may be returned to the lessor by the Company, the Company may negotiate with the lessor to purchase the assets at fair market value, or the Company may negotiate with the lessor to renew the lease at market rental rates. No residual value guarantees are contained in the leases. No financial covenants are contained within the ~~lease,~~lease; however there are customary operational covenants such as assurance the Company properly maintains the leased assets and carries appropriate insurance, etc. The leases include credit support in the form of either cash, collateral or letters of credit. See Note 19, “Commitments and Contingencies” for a description of cash held as security associated with the leases.

The Company has finance leases associated with its property and equipment in Latham, New York and at fueling customer locations. The fair value of this finance obligation approximated the carrying value as of ~~June~~September 30, 2021.

~~Future minimum lease payments under operating and finance leases (with initial or remaining lease terms in excess of one year) as of June 30, 2021 were as follows (in thousands):~~

Finance

Total

Operating Lease

Lease

Lease

Liability

Liability

Liabilities
Remainder of 2021

$
17,298

$
1,826

$
19,124
2022

34,579

3,731

38,310
2023

34,636

3,708

38,344
2024

34,636

3,715

38,351
2025 and thereafter

73,276

4,921

78,197
Total future minimum payments

194,425

17,901

212,326
Less imputed interest

(52,307)

(2,793)

(55,100)
Total

$
142,118

$
15,108

$
157,226

Rental expense for all operating leases was $8.2 million and $7.8 million for the three months ended June 30, 2021 and 2020, respectively. Rental expense for all operating leases was $16.3 million and $12.5 million for the six months ended June 30, 2021 and 2020, respectively.

The gross profit on sale/leaseback transactions for all operating leases was $19.5 million and $14.4 million for the three months ended June 30, 2021 and 2020, respectively. The gross profit on sale/leaseback transactions for all operating leases was $35.4 million and $19.7 million for the six months ended June 30, 2021 and 2020, respectively.

Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was $24.0 million and $2.9 million for the three months ended June 30, 2021 and 2020, respectively. Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was $35.9 million and $8.1 million for the six months ended June 30, 2021 and 2020, respectively.

At June 30, 2021 and December 31, 2020, the right of use assets associated with operating leases was $172.3 million and $136.9 million, respectively. The accumulated depreciation for these right of use assets was $26.5 million and $19.9 million at June 30, 2021 and December 31, 2020, respectively.

At June 30, 2021 and December 31, 2020, the right of use assets associated with finance leases was $17.3 million and $5.7 million, respectively. The accumulated depreciation for these right of use assets was $380 thousand and $102 thousand at June 30, 2021 and December 31, 2020, respectively.

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Future minimum lease payments under operating and finance leases (with initial or remaining lease terms in excess of one year) as of September 30, 2021 were as follows (in thousands):


			Finance		Total
		Operating Lease	Lease		Lease
		Liability	Liability		Liabilities
Remainder of 2021	$	9,929	$	1,019	$	10,948
2022		39,932		4,012		43,944
2023		39,989		3,989		43,978
2024		39,957		3,996		43,953
2025 and thereafter		90,241		10,843		101,084
Total future minimum payments		220,048		23,859		243,907
Less imputed interest		(57,364)		(4,074)		(61,438)
Total	$	162,684	$	19,785	$	182,469

Rental expense for all operating leases was $9.6 million and $8.1 million for the three months ended September 30, 2021 and 2020, respectively. Rental expense for all operating leases was $25.8 million and $20.6 million for the nine months ended September 30, 2021 and 2020, respectively.

The gross profit on sale/leaseback transactions for all operating leases was $30.7 million and $25.2 million for the three months ended September 30, 2021 and 2020, respectively. The gross profit on sale/leaseback transactions for all operating leases was $66.1 million and $44.9 million for the nine months ended September 30, 2021 and 2020, respectively.

Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was $26.6 million and $24.6 million for the three months ended September 30, 2021 and 2020, respectively. Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was $62.5 million and $32.7 million for the nine months ended September 30, 2021 and 2020, respectively.

At ~~June~~September 30, 2021 and December 31, 2020, the right of use assets associated with operating leases was $200.2 million and $136.9 million, respectively. The accumulated depreciation for these right of use assets was $32.3 million and $19.9 million at September 30, 2021 and December 31, 2020, respectively.

At September 30, 2021 and December 31, 2020, the right of use assets associated with finance leases was $22.8 million and $5.7 million, respectively. The accumulated depreciation for these right of use assets was $757 thousand and $102 thousand at September 30, 2021 and December 31, 2020, respectively.

At September 30, 2021 and December 31, 2020, security deposits associated with sale/leaseback transactions were ~~$3.1~~$3.3 million and $5.8 million, respectively, and were included in other assets in the consolidated balance sheets.

Other information related to the operating leases are presented in the following table:


		Six months ended		Six months ended	Nine months ended		Nine months ended
		June 30, 2021		June 30, 2020	September 30, 2021		September 30, 2020
Cash payments (in thousands)	$	16,081	$	9,674	$	25,726	$	14,954
Weighted average remaining lease term (years)		5.82		4.34		5.72		4.55
Weighted average discount rate		11.4%		12.1%		11.2%		11.8%

Right of use assets obtained in exchange for new finance lease liabilities were ~~$6.5~~$5.8 million and ~~$0.7 million~~$0 for the three months ended ~~June~~September 30, 2021 and 2020, respectively. Right of use assets obtained in exchange for new finance lease liabilities were ~~$12.1~~$17.9 million and ~~$0.7 million~~$686 thousand for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

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Other information related to the finance leases are presented in the following table:


		Six months ended		Six months ended	Nine months ended		Nine months ended
		June 30, 2021		June 30, 2020	September 30, 2021		September 30, 2020
Cash payments (in thousands)	$	1,166	$	132	$	2,128	$	252
Weighted average remaining lease term (years)		4.86		6.74		4.57		6.51
Weighted average discount rate		6.9%		9.6%		6.9%		9.6%

17. Finance Obligation

The Company has sold future services to be performed associated with certain sale/leaseback transactions and recorded the balance as a finance obligation. The outstanding balance of this obligation at ~~June~~September 30, 2021 was ~~$176.3~~ $190.5million, ~~$27.3~~$30.5 million and ~~$149.0~~$160.0 million of which was classified as short-term and long-term, respectively, on the accompanying consolidated balance sheet. The outstanding balance of this obligation at December 31, 2020 was $157.7 million, $24.2 million and $133.5 million of which was classified as short-term and long-term, respectively. The amount is amortized using the effective interest method. The fair value of this finance obligation approximated the carrying value as of ~~June~~September 30, 2021 and December 31, 2020.

In prior periods, the Company entered into sale/leaseback transactions that were accounted for as financing transactions and reported as part of finance obligations. The outstanding balance of finance obligations related to sale/leaseback transactions at ~~June~~September 30, 2021 was ~~$19.5~~$17.3 million, ~~$6.5~~$5.1 million and ~~$13.0~~$12.2 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheet. The outstanding balance of this obligation at December 31, 2020 was $23.9 million, $8.0 million and $15.9 million of which was classified as short-term and long-term, respectively on the accompanying consolidated balance sheets. The fair value of this finance obligation approximated the carrying value as of both ~~June~~September 30, 2021 and December 31, 2020.

Future minimum payments under finance obligations notes above as of ~~June~~September 30, 2021 were as follows (in thousands):

Total

Sale of Future

Sale/leaseback
Finance

revenue - debt

financings
Obligations
Remainder of 2021

$
23,525

$
4,212

$
27,737
2022

46,165

4,975

51,140

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											Total
								Sale of Future		Sale/leaseback	Finance
								revenue - debt		financings	Obligations
Remainder of 2021							$	12,788	$	1,680	$	14,468
2022								50,632		4,975		55,607
2023		46,165		3,148		49,313		50,632		3,148		53,780
2024		46,165		16,154		62,319		50,632		16,154		66,786
2025 and thereafter		72,708		—		72,708		86,614		—		86,614
Total future minimum payments		234,728		28,489		263,217		251,298		25,957		277,255
Less imputed interest		(58,461)		(8,951)		(67,412)		(60,760)		(8,658)		(69,418)
Total	$	176,267	$	19,538	$	195,805	$	190,538	$	17,299	$	207,837

Other information related to the above finance obligations are presented in the following table:


		Six months ended		Six months ended		Nine months ended		Nine months ended
		June 30, 2021		June 30, 2020		September 30, 2021		September 30, 2020
Cash payments (in thousands)	$	26,508	$	20,148	$	41,325	$	31,693
Weighted average remaining term (years)		4.9		4.3		4.88		4.74
Weighted average discount rate		11.3%		11.2%		11.3%		11.3%

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18. Investments

The amortized cost, gross unrealized gains and losses, fair value of those investments classified as available-for-sale, and allowance for credit losses at ~~June~~September 30, 2021 are summarized as follows (in thousands):


	Amortized		Gross		Gross		Fair		Allowance for		Amortized		Gross		Gross		Fair		Allowance for
	Cost		Unrealized Gains		Unrealized Losses		Value		Credit Losses		Cost		Unrealized Gains		Unrealized Losses		Value		Credit Losses
Corporate bonds	$	707,022	$	51	$	(1,989)	$	705,084		—	$	533,691	$	93	$	(3,695)	$	530,089		—
Commercial paper		329,471		253		(2)		329,722		—		35,719		76		—		35,795		—
Certificates of deposit		27,460		—		(6)		27,454		—		17,017		—		(13)		17,004		—
U.S. Treasuries		170,672		—		(195)		170,477		—		170,414		1		(537)		169,878		—
Municipal debt		9,993		—		(9)		9,984		—
Total	$	1,244,618	$	304	$	(2,201)	$	1,242,721	$	—	$	756,841	$	170	$	(4,245)	$	752,766	$	—

The cost, gross unrealized gains and losses, and fair value of those investments classified as equity securities at ~~June~~September 30, 2021 are summarized as follows (in thousands):


	June 30, 2021								September 30, 2021
			Gross		Gross		Fair				Gross		Gross		Fair
		Cost	Unrealized Gains		Unrealized Losses		Value			Cost	Unrealized Gains		Unrealized Losses		Value
Fixed income mutual funds	$	89,962	$	17	$	(81)	$	89,898	$	77,766	$	—	$	(132)	$	77,634
Exchange traded mutual funds		30,016		388		—		30,404		70,167		—		(152)		70,015
Total	$	119,978	$	405	$	(81)	$	120,302	$	147,933	$	—	$	(284)	$	147,649

A summary of the amortized cost and fair value of investments classified as available-for-sale, by contractual maturity, as of ~~June~~September 30, 2021 is as follows (in thousands):


	June 30, 2021				September 30, 2021
		Amortized	Fair			Amortized	Fair
Maturity:		Cost	Value			Cost	Value
Within one year	$	717,531	$	717,285	$	447,479	$	446,011
After one through five years		527,087		525,436		309,362		306,755
Total	$	1,244,618	$	1,242,721	$	756,841	$	752,766

Accrued interest income was $4.9 million at September 30, 2021 and is included within the balance for prepaid expenses and other current assets in the unaudited interim condensed consolidated balance sheets.

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19. Commitments and Contingencies

Restricted Cash

In connection with certain of the above noted sale/leaseback agreements, cash of ~~$243.5~~$301.3 million was required to be restricted as security as of ~~June~~September 30, 2021, which restricted cash will be released over the lease term. As of ~~June~~September 30, 2021, the Company also had certain letters of credit backed by restricted cash totaling ~~$143.7~~$137.7 million that are security for the above noted sale/leaseback agreements.

Litigation

Legal matters are defended and handled in the ordinary course of business. Liabilities for loss contingencies arising from claims, assessments, litigation, fines, and penalties and other sources are recorded when it is probable that a liability has been incurred and the amount can be reasonably estimated. Legal costs incurred in connection with loss contingencies are expensed as incurred. The Company has not recorded any accruals related to any legal matters.

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Concentrations of Credit Risk

Financial instruments that potentially subject the Company to credit risk consist principally of cash, cash equivalents, restricted cash, accounts receivable and marketable securities. Cash and restricted cash are maintained in accounts with financial institutions, which, at times may exceed the Federal depository insurance coverage of $0.25 million. The Company has not experienced losses on these accounts and management believes, based upon the quality of the financial institutions, that the credit risk with regard to these deposits is not significant. The Company’s available-for-sale securities consists primarily of investments in commercial paper, U.S. Treasury securities, ~~municipal debt~~ and short-term high credit quality corporate debt securities. Equity securities are comprised of fixed income and equity market index mutual funds.

Concentrations of credit risk with respect to receivables exist due to the limited number of select customers with whom the Company has commercial sales arrangements. To mitigate credit risk, the Company performs appropriate evaluation of a prospective customer’s financial condition.

At ~~June~~September 30, 2021, 1 customer comprised ~~78.5%~~79.6% of the total accounts receivable balance. At December 31, 2020, 3 customers comprised 73.9% of the total accounts receivable balance.

For purposes of assigning a customer to a sale/leaseback transaction completed with a financial institution, the Company considers the end user of the assets to be the ultimate customer. For the three and ~~six~~nine months ended ~~June~~September 30, 2021, ~~81.3%~~80.1% and ~~77.7%~~80.6%, of total consolidated revenues were associated with 3two and three customers, respectively. For the three and ~~six~~nine months ended ~~June~~September 30, 2020, ~~83.9%~~83.0% and ~~77.9%~~71.8% of total consolidated revenues were associated primarily with 2three and two customers, respectively.

20. Employee Benefit Plans

2011 and 2021 Stock Option and Incentive Plan

On May 12, 2011, the Company’s stockholders approved the 2011 Stock Option and Incentive Plan (the “2011 Plan”). The 2011 Plan provided for the issuance of up to a maximum number of shares of common stock equal to the sum of (i) 1,000,000, plus (ii) the number of shares of common stock underlying any grants pursuant to the 2011 Plan or the Plug Power Inc. 1999 Stock Option and Incentive Plan that are forfeited, canceled, repurchased or are terminated (other than by exercise). The shares ~~may be~~were issued pursuant to stock options, stock appreciation rights, restricted stock awards and certain other equity-based awards granted to employees, directors and consultants of the Company. NaN further grants may be made under the 2011 Plan after May 12, 2021. Through various amendments to the 2011 Plan approved by the Company’s stockholders, the number of shares of the Company’s common stock authorized for issuance under the 2011 Plan ~~has~~had been increased to 42.4 million. The Company recorded ~~expense~~expenses of approximately ~~$11.1~~$12.7 million and ~~$2.5~~$2.3 million, for the three months ended ~~June~~September 30, 2021 and 2020, respectively, in connection with the 2011 Plan. The Company recorded expense of approximately $32.3 million and $7.3 million, for the nine months ended September 30, 2021 and 2020, respectively, in connection with the 2011 Plan. In July 2021, the 2021 Stock Option Incentive Plan (the “2021 Plan”) was approved by the Company’s stockholders. The 2021 Plan provides for the issuance of up to a maximum number of shares of common stock equal to the sum of (i) 22,500,000 shares, plus 473,491 shares remaining under the 2011 Plan that were rolled into the 2021 Plan, plus (iii) shares underlying any awards under the 2011 Plan that are forfeited, canceled, cash-settled or otherwise terminated, other than by exercise.

Option Awards

The Company issues options that are time and performance-based awards. All option awards are determined to be classified as equity awards.

Service Stock Options Awards

2829

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expense of approximately $19.6 million and $5.0 million, for the six months ended June 30, 2021 and 2020, respectively, in connection with the 2011 Plan. In July 2021, the 2021 Stock Option Incentive Plan (the “2021 Plan”) was approved by the Company’s stockholders, which provides for the sum of 22,500,000 shares in addition to 473,491 shares of common stock that are available for grantTo date, options granted under the 2011 ~~Plan~~and 2021 Plans have vesting provisions ranging from one to ~~be issued under the 2021 Plan.~~

~~At June 30, 2021, there were outstanding options to purchase approximately 9.2 million shares of common stock.~~three years in duration and expire ten years after issuance. Options for employees issued under this plan generally vest in equal annual installments over three years and expire ten years after ~~issuance.~~issuance Options granted to members of the Board generally vest one year after issuance. ~~To date, options granted under the 2011 Plan have vesting provisions ranging from~~ ~~one~~ ~~to three years in duration and expire ten years after issuance.~~

Compensation cost associated with employee stock options represented approximately $4.3 million and $1.5 million of the total share-based payment expense recorded for the three months ended June 30, 2021 and June 30, 2020, respectively. Compensation cost associated with employee stock options represented approximately $7.6 million and $2.9 million of the total share-based payment expense recorded for the six months ended June 30, 2021 and June 30, 2020, respectively. The Company estimates the fair value of the service stock options using a Black-Scholes valuation model, and the resulting fair value is recorded as compensation cost on a straight-line basis over the option vesting period. Key inputs and assumptions used to estimate the fair value of the service stock options include the grant price of the award, the expected option term, volatility of the Company’s stock, an appropriate risk-free rate, and the Company’s dividend yield. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by employees who receive equity awards, and subsequent events are not indicative of the reasonableness of the original estimates of fair value made by the Company. The assumptions made for purposes of estimating fair value under the Black-Scholes model for the ~~698,500~~1,870,835 and ~~174,649~~3,429,549 service stock options granted during the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively, were as follows:


	June 30,	June 30,	September 30,	September 30,
	2021	2020	2021	2020
Expected term of options (years)	5	6	3-5	6
Risk free interest rate	0.61% - 1.04%	0.45% - 1.37%	0.61% - 1.05%	0.37% - 1.37%
Volatility	72.46% - 73.69%	64.19% - 64.80%	72.46% - 75.52%	64.19% - 66.94%

There was 0 expected dividend yield for the ~~employee~~service stock options granted.

The Company has historically used the simplified method in determining its expected term of all its service stock option grants in all periods presented. The simplified method was used because the Company did not believe historical exercise data provided a reasonable basis for the expected term of its grants, primarily as a result of the limited number of service stock option exercises that have historically occurred. Due to the recent increase in exercise activity at the Company, beginning in the second quarter of 2021, the expected term is based on the Company’s historical ~~experience.~~experience with employee early exercise behavior. The estimated stock price volatility was derived from the Company’s actual historic stock prices over the past five years, which represents the Company’s best estimate of expected volatility.

~~A summary of~~The following table reflects the service stock option activity for the ~~six~~nine months ended ~~June~~September 30, ~~2021 is as follows (in thousands except share amounts):~~2021:


				Weighted						Weighted
		Weighted		Average				Weighted		Average
		Average		Remaining	Aggregate			Average		Remaining	Aggregate
		Exercise		Contractual	Intrinsic			Exercise		Contractual	Intrinsic
	Shares	Price		Terms	Value		Shares	Price		Terms	Value
Options outstanding at December 31, 2020	10,284,498	$	5.78	7.8	$	289,316	10,284,498	$	5.78	7.8	$	289,316
Granted	698,500		46.82	—		—	1,870,835		32.48	—		—
Exercised	(1,812,099)		2.65	—		—	(1,911,112)		2.78	—		—
Forfeited	(5,833)		6.78	—		—	(15,833)		21.35	—		—
Expired	—		—	—		—	(4,100)		6.10	—		—
Options outstanding at June 30, 2021	9,165,066	$	9.51	7.9	$	226,164
Options exercisable at June 30, 2021	2,523,341		2.17	5.6		80,808
Options outstanding at September 30, 2021							10,224,288	$	11.21	7.9	$	146,581
Options exercisable at September 30, 2021							5,045,168		4.46	6.7		106,360
Options unvested at September 30, 2021							5,179,120	$	17.77	9.0	$	40,221

The weighted average grant-date fair value of the service stock options granted during the three months ended September 30, 2021 and 2020 was $15.82 and $7.45, respectively. The weighted average grant-date fair value of the service stock options granted during the nine months ended September 30, 2021 and 2020 was $19.76 and $7.21, respectively. The total fair value of the service stock options that vested during the three months ended September 30, 2021 and 2020 was approximately $10.4 million and $5.2 million, respectively. The total fair value of the service stock options that vested during the nine months ended September 30, 2021 and 2020 was approximately $10.9 million and $5.9 million, respectively.

Compensation cost associated with service stock options represented approximately $4.2 million and $1.1 million of the total share-based payment expense recorded for the three months ended September 30, 2021 and September 30,

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2020, respectively. Compensation cost associated with service stock options represented approximately $11.9 million and 4.1 million of the total share-based payment expense recorded for the nine months ended September 30, 2021 and September 30, 2020, respectively. As of September 30, 2021 and 2020 there was approximately $50.2 million and $8.2 million of unrecognized compensation cost related to service stock option awards to be recognized over the next three years.

Performance Stock Option Awards

In September 2021, the Compensation Committee approved the grant of performance stock options to the Company’s Chief Executive Officer and certain other executive officers. These performance stock options are subject to both performance-based conditions tied to the achievement of stock price hurdles and time-based vesting; therefore, a Monte Carlo Simulation was utilized to determine the grant date fair value with the associated expense recognized over the requisite service period. Up to one-third (1/3) the performance stock options will vest and become exercisable on each of the first three anniversaries of the grant date, provided that the volume weighted average price of the Company’s common stock during any 30 consecutive trading day period in the three year performance period following the grant date of the stock options (“VWAP”) equals or exceeds certain levels. For the Company’s Chief Executive Officer, 25% of his performance stock options will be deemed to have satisfied the performance-based conditions and will be eligible to be exercised over time if the VWAP equals or exceeds $35; an additional 25% of his options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $50; an additional 16.675% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $65; an additional 16.65% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $80; and the remaining 16.675% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $100. There will be no interpolation for the Chief Executive Officer’s performance stock option if the VWAP falls between any two stock price hurdles, unless in the event of a change in control. For executive officers other than the Chief Executive Officer, 25% of the performance stock options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals $35; an additional 25% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals $50; and the remaining 50% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $100. If the VWAP falls between two of the stock price hurdles, an incremental number of options will become exercisable based on linear interpolation in $1 increments. Failure to achieve any of the stock price hurdles applicable to a performance stock option during the three-year performance period will result in the applicable options not becoming exercisable. The performance-based stock options have a maximum term of seven years from the grant date.

Key inputs and assumptions used to estimate the fair value of performance stock options include the grant price of the awards, the expected option term, VWAP hurdle rates, volatility of the Company’s stock, an appropriate risk-free rate, and the Company’s dividend yield. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by employees who receive equity awards, and subsequent events are not indicative of the reasonableness of the original estimates of fair value made by the Company.

The following table presents key assumptions used to estimate the fair value of the performance stock option awards granted in 2021:


		September 30,
		2021
Remaining VWAP performance period (years)		3
Risk- free interest rate		1.12%
Expected volatility		70.00%
Closing stock price on grant date		$ 26.92

The following table reflects the performance stock option award activity for the nine months ended September 30, 2021. Solely for the purposes of this table, the number of performance options is based on participants earning the maximum number of performance options (i.e 200% of the target number of performance options).

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~~Options unvested at June 30, 2021~~

~~6,641,725~~

~~12.30~~

~~8.7~~

~~145,356~~


				Weighted
		Weighted		Average
		Average		Remaining	Aggregate
		Exercise		Contractual	Intrinsic
	Shares	Price		Terms	Value
Granted	14,560,000		26.92	—		—
Options outstanding at September 30, 2021	14,560,000	$	26.92	6.98	$	—
Options unvested at September 30, 2021	14,560,000	$	26.92	6.98	$	—

The weighted average grant-date fair value of performance stock options granted during the three months and nine months ended ~~June~~September 30, 2021 ~~and 2020~~ was ~~$29.23 and $4.88, respectively. The weighted average grant-date fair value of~~$12.78. There were 0 performance stock options ~~granted~~that were exercised during the ~~six~~three months and nine months ended ~~June~~September 30, ~~2021~~2021.

Compensation cost associated with performance stock options represented approximately $2.0 million of the total share-based payment expense recorded for the three months and ~~2020 was $46.67 and $7.73, respectively.~~nine months ended September 30, 2021. As of ~~June~~September, 30, 2021, there was approximately ~~$38.3~~$183.7 million of unrecognized compensation cost related to performance stock option awards to be recognized over the next three years. The total fair value of stock options that vested during the three months ended June 30, 2021 and 2020 was approximately $432 thousand and $493 thousand, respectively. The total fair value of stock options that vested during the six months ended June 30, 2021 and 2020 was approximately $520 thousand and $516 thousand, respectively.

Restricted Stock Awards

Restricted stock awards generally vest in equal installments over a period of one to three years. Restricted stock awards are valued based on the closing price of the Company’s common stock on the date of grant, and compensation cost is recorded on a straight-line basis over the share vesting period. The Company recorded expense associated with its restricted stock awards of approximately ~~$6.8~~$6.5 million and ~~$932 thousand,~~$1.2 million, for the three months ended ~~June~~September 30, 2021 and 2020, respectively. The Company recorded expense associated with its restricted stock awards of approximately ~~$12.0~~$18.5 million and ~~$2.0~~$3.2 million, for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively. Additionally, for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, there was ~~$67.0~~$81.2 million and ~~$6.9~~$6.2 million, respectively, of unrecognized compensation cost related to restricted stock awards to be recognized over the next three years.

A summary of restricted stock activity for the year ended ~~June~~September 30, 2021 is as follows (in thousands except share amounts):


		Aggregate			Aggregate
		Intrinsic			Intrinsic
	Shares	Value		Shares	Value
Unvested restricted stock at December 31, 2020	5,874,642	$	—	5,874,642	$	—
Granted	653,000		—	1,812,856		—
Vested	(149,650)		—	(2,713,789)		—
Forfeited	(5,833)		—	(13,333)		—
Unvested restricted stock at June 30, 2021	6,372,159	$	217,864
Unvested restricted stock at September 30, 2021				4,960,376	$	126,688

401(k) Savings & Retirement Plan

The Company offers a 401(k) Savings & Retirement Plan to eligible employees meeting certain age and service requirements. This plan permits participants to contribute 100% of their salary, up to the maximum allowable by the Internal Revenue Service regulations. Participants are immediately vested in their voluntary contributions plus actual earnings or less actual losses thereon. Participants are vested in the Company’s matching contribution based on years of service completed. Participants are fully vested upon completion of three years of service. During 2018, the Company began funding its matching contribution in a combination of cash and common stock. The Company issued ~~12,513~~54,531 shares of common stock and ~~175,978~~368,903 shares of common stock pursuant to the Plug Power Inc. 401(k) Savings & Retirement Plan during the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

The Company’s expense for this plan was approximately ~~$0.9~~$1.1 million, and ~~$0.8~~$0.6 million for the three months ended ~~June~~September 30, 2021 and 2020, respectively. The Company’s expense for this plan was approximately ~~$2.2~~$3.4 million, and ~~$1.3~~$1.9 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

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Non-Employee Director Compensation

Each non-employee director is paid an annual retainer for his or her service, in the form of either cash or stock compensation. The Company granted ~~2,585~~3,685 shares of common stock and ~~7,657~~4,146 shares of common stock to non-employee directors as compensation for the three months ended ~~June~~September 30, 2021 and 2020, respectively. The Company granted ~~5,238~~8,923 shares of common stock and ~~22,490~~26,636 shares of common stock to non-employee directors as compensation for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively. All common stock issued is fully vested at the time of issuance and is valued at fair value on the date of issuance. The Company’s share-based compensation expense in connection with non-employee director compensation was approximately ~~$94~~$99 thousand and ~~$55~~$56 thousand for the three months ended ~~June~~September 30, 2021 and

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2020, respectively. The Company’s share-based compensation expense in connection with non-employee director compensation was approximately ~~$179~~$277 thousand and ~~$111~~$167 thousand for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

21. Subsequent Events

~~We have evaluated events~~In November 2021, the Company entered into a signing protocol to acquire Frames Group (“Frames”), a leader in engineering, process and systems integration serving the energy sector. The purchase price is approximately €115 million, of which €30 million is based on future earnouts over the next four years from the completion date. Plug Power will leverage Frames’ capabilities as well as its existing network of ~~August 5,~~suppliers and contract manufacturing facilities to deliver electrolyzer solutions of all sizes, from one megawatt (MW) containerized solutions to solutions for 100 MW-1,000 MW standalone plants or integrated into customers’ processes. The acquisition is expected to be completed by the end of the year, and is subject to customary closing conditions, including receipt of Dutch works council advice.

On October 14, 2021, the Company and its wholly-owned subsidiary Plug Power Hydrogen Holdings, Inc. entered into a definitive agreement for the acquisition of Applied Cryo Technologies, Inc. for a purchase price of approximately $170 million, of which $40 million will be in stock and $30 million will be based on future earnouts over the next two and half years. Applied Cryo Technologies, Inc. is a leading provider of technology, equipment and services for the transportation, storage and distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases. The acquisition is expected to close during the fourth quarter of 2021 and ~~have not identified any subsequent events.~~is subject to customary closing conditions, including receipt of all approvals or the termination or expiration of all waiting periods required under applicable antitrust laws.

In October 2021, the Company and SK E&S Co., Ltd., an energy company affiliated with SK Holdings Co., Ltd., formed H2A, which is a joint venture designed to accelerate the use of hydrogen as an alternative energy source in Asian markets.

Item 2 — Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with our accompanying unaudited interim condensed consolidated financial statements and notes thereto included within this report, and our audited and notes thereto included in our 2020 19-K. In addition to historical information, this Quarterly Report on Form 10-Q and the following discussion contain statements that are not historical facts and are considered forward-looking within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). These forward-looking statements contain projections of our future results of operations or of our financial position or state other forward-looking information. In some cases, you can identify these statements by forward-looking words such as “anticipate,” “believe,” “could,” “continue,” “estimate,” “expect,” “intend,” “may,” “should,” “will,” “would,” “plan,” “projected” or the negative of such words or other similar words or phrases. We believe that it is important to communicate our future expectations to our investors. However, there may be events in the future that we are not able to accurately predict or control and that may cause our actual results to differ materially from the expectations we describe in our forward-looking statements. Investors are cautioned not to unduly rely on forward-looking statements because they involve risks and uncertainties, and actual results may differ materially from those discussed as a result of various factors, including, but not limited to:

●

the risk that we continue to incur losses and might never achieve or maintain profitability;

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the risk that we will need to raise additional capital to fund our operations and such capital may not be available to us;

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the risk of dilution to our stockholders and/or stock price should we need to raise additional capital;

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the risk that our lack of extensive experience in manufacturing and marketing products may impact our ability to manufacture and market products on a profitable and large-scale commercial basis;

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the risk that unit orders may not ship, be installed and/or converted to revenue, in whole or in part;

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the risk that a loss of one or more of our major customers, or if one of our major customers delays payment of or is unable to pay its receivables, a material adverse effect could result on our financial condition;

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the risk that a sale of a significant number of shares of stock could depress the market price of our common stock;

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the risk that our convertible senior notes, if settled in cash, could have a material effect on our financial results;

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the risk that our convertible note hedges may affect the value of our convertible senior notes and our common stock;

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the risk that negative publicity related to our business or stock could result in a negative impact on our stock value and profitability;

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the risk of potential losses related to any product liability claims or contract disputes;

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the risk of loss related to an inability to remediate the material weakness identified in internal control over financial reporting as of December 31, 2020, or inability to otherwise maintain an effective system of internal control;

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the risk that the determination to restate the prior period financial statements could negatively affect investor confidence and raise reputational issues;

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the risk of loss related to an inability to maintain an effective system of internal controls;

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our ability to attract and maintain key personnel;

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the risks related to the use of flammable fuels in our products;

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the risk that pending orders may not convert to purchase orders, in whole or in part;

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the cost and timing of developing, marketing and selling our products;

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the risks of delays in or not completing our product development goals;

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the risks involved with participating in joint ventures;

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our ability to obtain financing arrangements to support the sale or leasing of our products and services to customers;

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our ability to successfully pursue new business ventures;

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our ability to achieve the forecasted gross margin on the sale of our products;

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the cost and availability of fuel and fueling infrastructures for our products;

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the risks, liabilities, and costs related to environmental, health and safety matters;

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the risk of elimination of government subsidies and economic incentives for alternative energy products;

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market acceptance of our products and services, including GenDrive, GenSure and GenKey systems;

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our ability to establish and maintain relationships with third parties with respect to product development, manufacturing, distribution and servicing, and the supply of key product components;

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the cost and availability of components and parts for our products;

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the risk that possible new tariffs could have a material adverse effect on our business;

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our ability to develop commercially viable products;

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our ability to reduce product and manufacturing costs;

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our ability to successfully market, distribute and service our products and services internationally;

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our ability to improve system reliability for our products;

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competitive factors, such as price competition and competition from other traditional and alternative energy companies;

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our ability to protect our intellectual property;

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the risk of dependency on information technology on our operations and the failure of such technology;

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the cost of complying with current and future federal, state and international governmental regulations;

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our subjectivity to legal proceedings and legal compliance;

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the risks associated with past and potential future acquisitions; and

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the volatility of our stock price.

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The risks included here are not exhaustive, and additional factors could adversely affect our business and financial performance, including factors and risks discussed in the section titled “Risk Factors” included under Part I, Item 1A, below. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time, and it is not possible for management to predict all such risk factors, nor can we assess the impact of all such risk factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from these contained in any forward-looking statements. While forward-looking statements reflect our good faith beliefs, they are not guarantees of future performance. These forward-looking statements speak only as of the date on which the statements were made. Except as may be required by applicable law, we do not undertake or intend to update any forward-looking statements after the date of this Quarterly Report on Form 10-Q.

References in this Quarterly Report on Form 10-Q to “Plug Power,” the “Company,” “we,” “our” or “us” refer to Plug Power Inc., including as the context requires, its subsidiaries.

Overview

Part of our long-term plan includes Plug Power penetrating the on-road vehicle market and large-scale stationary market. Plug Power’s formation of a joint venture with Renault in Europe and the announced future joint venture with SK

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Group in Asia not only support this goal but are expected to provide us with a more global footprint. Plug has been successful with acquisitions, strategic partnerships, and joint ventures, and we plan to continue this mix. For example, we expect our relationships with Brookfield and Apex to provide us access to low-cost renewable energy, which is critical to produce low-cost green hydrogen.

Our current products and services include:

GenDrive: GenDrive is our hydrogen fueled PEM fuel cell system providing power to material handling electric vehicles, including class 1, 2, 3 and 6 electric forklifts, Automated Guided Vehicles (“AGVs”) and ground support equipment;

GenFuel: GenFuel is our liquid hydrogen fueling delivery, generation, storage, and dispensing system;

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ProGen: ProGen is our fuel cell stack and engine technology currently used globally in mobility and stationary fuel cell systems, and as engines in electric delivery vans. This includes the Plug “MEA”, a critical component of the fuel cell stack used in zero-emission fuel cell electric vehicle engines; and

We provide our products worldwide through our direct product sales force, and by leveraging relationships with “OEMs” and their dealer networks. Plug Power is targeting Asia and Europe for expansion in adoption. Europe has rolled out ambitious targets for the hydrogen economy and Plug Power is executing on its strategy to become one of the European leaders. This includes a targeted account strategy for material handling as well as securing strategic partnerships with European OEMs, energy companies, utility leaders and accelerating our electrolyzer business. We manufacture our commercially viable products in Latham, New York, Rochester, New York and Spokane, Washington and support liquid hydrogen generation and logistics in Charleston, Tennessee.

Our wholly-owned subsidiary, Plug Power France, ~~has~~ created a joint venture with Renault SAS (“Renault”) named HyVia, a French société par actions simplifiée (“HyVia”). in the second quarter of 2021. HyVia plans to manufacture and sell fuel cell powered electric light commercial vehicles (“FCELCVs”) and to supply hydrogen fuel and fueling stations to support the FCE-LCV market, in each case primarily in Europe. HyVia is owned 50% by Plug Power France and 50% by Renault.

Recent Developments

COVID-19 Update

As a result of the COVID-19 pandemic outbreak in March 2020, state governments—including those in New York and Washington, where our manufacturing facilities are located—issued orders requiring businesses that do not conduct essential services to temporarily close their physical workplaces to employees and customers. As a result, we had

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put in place a number of protective measures in response to the COVID-19 outbreak, which included the canceling of all commercial air travel and all other non-critical travel, requesting that employees limit non-essential personal travel, eliminating all but essential third-party access to our facilities, enhancing our facilities’ janitorial and sanitary procedures, encouraging employees to work from home to the extent their job function enabled them to do so, encouraging the use of virtual employee meetings, and providing staggered shifts and social distancing measures for those employees associated with manufacturing and service operations. In May 2021, the Centers for Disease Control and Prevention (the “CDC”) revised guidance for fully vaccinated individuals regarding no longer needing to wear a mask indoors or practicing social distancing, which was subsequently adopted by the state of New York on May 19, 2021.

~~As a result, effective in~~In June 2021, ~~and~~ in accordance with ~~new~~revised CDC guidelines and where permitted by state law, employees who ~~are~~were fully vaccinated against COVID-19 and have been through Plug Power’s certification process, ~~may~~were permitted to enter Plug Power facilities without a face covering. Individuals inside Plug Power facilities who dodid not wish to go through the certification process ~~are~~were required to wear proper face coverings and ~~continue~~continued to maintain social distancing of 6six feet or greater. In states where the guidelines for face coverings iswas still government mandated, Plug Power ~~will comply~~complied with the state and local jurisdictions and ~~enforce~~enforced face mask usage, as well as social distancing at our sites.

In early August 2021, we adjusted our guidance as a result of an influx of COVID-19 cases and began requiring all employees and visitors regardless of vaccination status to wear a face-covering at all times while within a Plug Power ~~will~~facility, and strongly encouraged social distancing. We continue to provide enhanced janitorial and sanitary procedures, encourage employees to work from home to the extent their job function enables them to do so, and encourage the use of virtual employee meetings.

We cannot predict at this time the full extent to which COVID-19 will impact our business, results, and financial condition, which will depend on many factors. We are staying in close communication with our manufacturing facilities, employees, customers, suppliers, and partners, and acting to mitigate the impact of this dynamic and evolving situation, but there is no guarantee that we will be able to do so. ~~Although as of the date hereof, we have not observed any material impacts to our supply of components, the situation is fluid.~~ Many of the parts for our products are sourced from suppliers in China and the manufacturing situation in China remains variable. Supply chain disruptions could reduce the availability of key components, increase prices or both. Certain of our customers, such as Walmart, significantly increased their use of units and hydrogen fuel consumption as a result of COVID-19. In the three and six months ended June 30, 2021 and the twelve months ended December 31, 2020, our services and PPA margins were negatively impacted by incremental service costs associated with increased usage of units at some of our primary customer sites. In addition, future changes in applicable government orders or regulations, or changes in the interpretation of existing orders or regulations, could result in further disruptions to our business that may materially and adversely affect our financial condition and results of operations.

~~Strategic Activities~~

On June 3, 2021, our wholly-owned subsidiary, Plug Power France, created a joint venture with Renault named HyVia. HyVia plans to manufacture and sell FCELCVs and to supply hydrogen fuel and fueling stations to support the FCE-LCV market, in each case primarily in Europe. HyVia is owned 50% by Plug Power France and 50% by Renault. We include our share of the results of HyVia using the equity method based on our economic ownership interest and our ability to exercise significant influence over the operating and financial decisions of HyVia. We do not control this entity as our ownership is 50%, and as such HyVia is not included within our consolidated financial results for any period presented.

~~Charter Amendment~~

On July 30, 2021, our stockholders, upon recommendation of our Board of Directors, approved an amendment to our Amended and Restated Certificate of Incorporation (the “Charter Amendment”) to increase the number of authorized shares of common stock from 750,000,000 shares to 1,500,000,000 shares. The Charter Amendment became effective upon the filing of the Charter Amendment with the Secretary of the State of the State of Delaware on August 2, 2021.

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of key components, increase prices or both, as the COVID-19 pandemic has caused significant challenges for global supply chains resulting primarily in transportation delays. These transportation delays have caused incremental freight charges, which have negatively impacted our results of operations. We expect that these challenges will continue to have an impact on our businesses for the foreseeable future.

We continue to take proactive steps to limit the impact of these challenges and are working closely with our suppliers and transportation vendors to ensure availability of products and implement other cost savings initiatives. In addition, we continue to invest in our supply chain to improve its resilience with a focus on automation, dual sourcing of critical components and localized manufacturing when feasible. To date, there has been limited disruption to the availability of our products, though it is possible that more significant disruptions could occur if these supply chain challenges continue.

Strategic and Other Activities

Entry into Definitive Agreement

In November 2021, the Company entered into a signing protocol to acquire Frames Group (“Frames”), a leader in engineering, process and systems integration serving the energy sector. The purchase price is approximately €115 million, of which €30 million is based on future earnouts over the next four years from the completion date. Plug Power will leverage Frames’ capabilities as well as its existing network of suppliers and contract manufacturing facilities to deliver electrolyzer solutions of all sizes, from one megawatt (MW) containerized solutions to solutions for 100 MW-1,000 MW standalone plants or integrated into customers’ processes. The acquisition is expected to be completed by the end of the year, and is subject to customary closing conditions, including receipt of Dutch works council advice.

On October 14, 2021, the Company and its wholly-owned subsidiary Plug Power Hydrogen Holdings, Inc. entered into a definitive agreement for the acquisition of Applied Cryo Technologies, Inc. for a purchase price of approximately $170 million, of which $40 million will be in stock and $30 million will be based on future earnouts over the next two and half years. Applied Cryo Technologies, Inc. is a leading provider of technology, equipment and services for the transportation, storage and distribution of liquified hydrogen, oxygen, argon, nitrogen and other cryogenic gases. The acquisition is expected to close during the fourth quarter of 2021 and is subject to customary closing conditions, including receipt of all approvals or the termination or expiration of all waiting periods required under applicable antitrust laws.

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Performance Stock Option Awards

In September 2021, the Compensation Committee approved the grant of performance stock options to the Company’s Chief Executive Officer and certain other executive officers. These performance stock options are subject to both performance-based conditions tied to the achievement of stock price hurdles and time-based vesting; therefore, a Monte Carlo Simulation was utilized to determine the grant date fair value with the associated expense recognized over the requisite service period. The design of the performance options was developed with input from the Company’s independent compensation consultant. The performance stock options are strongly aligned with the Company’s culture of pay for performance and will ensure the executive team’s commitment and focus on delivering significant increases in stockholder value over the three-year performance period. Up to one-third (1/3) the performance stock options will vest and become exercisable on each of the first three anniversaries of the grant date, provided that the volume weighted average price of the Company’s common stock during any 30 consecutive trading day period in the three year performance period following the grant date of the stock options (“VWAP”) equals or exceeds certain levels. For the Company’s Chief Executive Officer, 25% of his performance stock options will be deemed to have satisfied the performance-based conditions and will be eligible to be exercised over time if the VWAP equals or exceeds $35; an additional 25% of his options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $50; an additional 16.675% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $65; an additional 16.65% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $80; and the remaining 16.675% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $100. There will be no interpolation for the Chief Executive Officer’s performance stock option if the VWAP falls between any two stock price hurdles, unless in the event of a change in control. For executive officers other than the Chief Executive Officer, 25% of the performance stock options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals $35; an additional 25% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals $50; and the remaining 50% of the options will be deemed to have satisfied the performance-based condition and will be eligible to be exercised if the VWAP equals or exceeds $100. If the VWAP falls between two of the stock price hurdles, an incremental number of options will become exercisable based on linear interpolation in $1 increments. Failure to achieve any of the stock price hurdles applicable to a performance stock option during the three-year performance period will result in the applicable options not becoming exercisable. The performance-based stock options have a maximum term of seven years from the grant date.

Explanatory Note

As previously disclosed in the Explanatory Note to the 2020 10-K, the Company restated its previously issued audited consolidated financial statements as of and for the years ended December 31, 2019 and 2018 and its unaudited interim condensed consolidated quarterly financial statements of and for each of the quarterly periods ended March 31, 2020, June 30, 2020 and 2019, September 30, 2020 and 2019 and December 31, 2019.

Previously filed annual reports on Form 10-K and quarterly reports on Form 10-Q for the periods affected by the restatement have not been amended. Accordingly, investors should not rely upon the Company’s previously released financial statements for these periods and any earnings releases or other communications relating to these periods, and, for these periods, investors should rely solely on the financial statements and other financial data for the relevant periods included in the 2020 10-K. Commencing with our Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2021, we are including in our quarterly reports for fiscal 2021 restated results for the corresponding interim periods of fiscal 2020.

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Results of Operations

Our primary sources of revenue are from sales of fuel cell systems and related infrastructure, services performed on fuel cell systems and related infrastructure, Power Purchase Agreements (PPAs), and fuel delivered to customers. Revenue from sales of fuel cell systems and related infrastructure represents sales of our GenDrive units, GenSure stationary backup power units, as well as hydrogen fueling infrastructure. Revenue from services performed on fuel cell systems and related infrastructure represents revenue earned on our service and maintenance contracts and sales of spare parts. Revenue from PPAs primarily represents payments received from customers who make monthly payments to access the Company’s GenKey solution. Revenue associated with fuel delivered to customers represents the sale of hydrogen to customers that has been purchased by the Company from a third party or generated on site.

Net revenue, cost of revenue, gross profit (loss) and gross margin for the three and ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, were as follows (in thousands):

Three Months Ended

Six Months Ended

June 30,

June 30,

Cost of

Gross

Gross

Cost of

Gross

Gross

Net Revenue

Revenue

Profit/(Loss)

Margin

Net Revenue

Revenue

Profit/(Loss)

Margin

For the period ended June 30, 2021:

Sales of fuel cell systems and related infrastructure
$
99,278

$
79,913

$
19,365

19.5
%

$
146,050

$
108,887

$
37,163

25.4
%
Services performed on fuel cell systems and related infrastructure

5,675

15,475

(9,800)

(172.7)
%

11,720

28,561

(16,841)

(143.7)
%
Provision for loss contracts related to service

—

6,694

(6,694)

N/A

—

8,179

(8,179)

N/A

Power Purchase Agreements

8,361

22,234

(13,873)

(165.9)
%

16,187

40,577

(24,390)

(150.7)
%
Fuel delivered to customers

11,121

40,331

(29,210)

(262.6)
%

22,248

62,474

(40,226)

(180.8)
%
Other

122

208

(86)

(70.5)
%

310

306

4

1.3
%
Total
$
124,557

$
164,855

$
(40,298)

(32.4)
%

$
196,515

$
248,984

$
(52,469)

(26.7)
%
For the period ended June 30, 2020:

Sales of fuel cell systems and related infrastructure
$
47,746

$
33,888

$
13,858

29.0
%

$
68,214

$
47,862

$
20,352

29.8
%
Services performed on fuel cell systems and related infrastructure

6,236

7,773

(1,537)

(24.6)
%

12,757

18,120

(5,363)

(42.0)
%
Provision for loss contracts related to service

—

706

(706)

N/A

—

801

(801)

N/A

Power Purchase Agreements

6,579

14,504

(7,925)

(120.5)
%

13,000

29,275

(16,275)

(125.2)
%
Fuel delivered to customers

7,372

11,076

(3,704)

(50.2)
%

14,705

22,330

(7,625)

(51.9)
%
Other

62

63

(1)

(1.6)
%

138

144

(6)

(4.3)
%
Total
$
67,995

$
68,010

$
(15)

(0.0)
%

$
108,814

$
118,532

$
(9,718)

(8.9)
%



	Three Months Ended								Nine Months Ended
	September 30,								September 30,
			Cost of		Gross		Gross				Cost of		Gross		Gross
	Net Revenue		Revenue		Profit/(Loss)		Margin		Net Revenue		Revenue		Profit/(Loss)		Margin
For the period ended September 30, 2021:
Sales of fuel cell systems and related infrastructure	$	115,999	$	89,235	$	26,764	23.1	%	$	262,049	$	198,122	$	63,927	24.4	%
Services performed on fuel cell systems and related infrastructure		6,677		18,697		(12,020)	(180.0)	%		18,397		47,258		(28,861)	(156.9)	%
Provision for loss contracts related to service		—		7,462		(7,462)	N/A			—		15,641		(15,641)	N/A
Power Purchase Agreements		9,321		31,199		(21,878)	(234.7)	%		25,508		71,776		(46,268)	(181.4)	%
Fuel delivered to customers		11,556		27,857		(16,301)	(141.1)	%		33,804		90,331		(56,527)	(167.2)	%
Other		369		550		(181)	(49.1)	%		679		856		(177)	(26.1)	%
Total	$	143,922	$	175,000	$	(31,078)	(21.6)	%	$	340,437	$	423,984	$	(83,547)	(24.5)	%
For the period ended September 30, 2020:
Sales of fuel cell systems and related infrastructure	$	83,662	$	69,428	$	14,234	17.0	%	$	151,876	$	117,290	$	34,586	22.8	%
Services performed on fuel cell systems and related infrastructure		6,829		9,180		(2,351)	(34.4)	%		19,586		27,300		(7,714)	(39.4)	%
Provision for loss contracts related to service		—		25,147		(25,147)	N/A			—		25,948		(25,948)	N/A
Power Purchase Agreements		6,629		14,744		(8,115)	(122.4)	%		19,629		44,019		(24,390)	(124.3)	%
Fuel delivered to customers		9,831		17,002		(7,171)	(72.9)	%		24,536		39,332		(14,796)	(60.3)	%
Other		97		131		(34)	(35.1)	%		235		275		(40)	(17.0)	%
Total	$	107,048	$	135,632	$	(28,584)	(26.7)	%	$	215,862	$	254,164	$	(38,302)	(17.7)	%

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The amount of provision for common stock warrants recorded as a reduction of revenue during the three and ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively, is shown in the table below (in thousands):


	Three months ended June 30,				Six months ended June 30,				Three months ended September 30,				Nine months ended September 30,
	2021		2020		2021		2020		2021		2020		2021		2020

Sales of fuel cell systems and related infrastructure	$	—	$	(2,497)	$	(27)	$	(3,141)	$	—	$	(16,146)	$	(27)	$	(19,287)
Services performed on fuel cell systems and related infrastructure		(131)		(466)		(271)		(724)		(69)		(688)		(340)		(1,412)
Power Purchase Agreements		(902)		(578)		(1,802)		(1,129)		(652)		(758)		(2,454)		(1,887)
Fuel delivered to customers		(714)		(824)		(1,352)		(1,578)		(573)		(1,034)		(1,925)		(2,612)
Total	$	(1,747)	$	(4,365)	$	(3,452)	$	(6,572)	$	(1,294)	$	(18,626)	$	(4,746)	$	(25,198)

Net Revenue

Revenue – sales of fuel cell systems and related infrastructure. Revenue from sales of fuel cell systems and related infrastructure represents revenue from the sale of our fuel cells, such as GenDrive units and GenSure stationary backup power units, as well as hydrogen fueling infrastructure referred to at the site level as hydrogen installations. Revenue from sales of fuel cell systems and related infrastructure for the three months ended ~~June~~September 30, 2021 increased ~~$51.5~~$32.3 million, or ~~107.9%~~38.7%, to ~~$99.3~~$116.0 million from ~~$47.8~~$83.7 million for the three months ended ~~June~~September 30, 2020. Included within revenue was a provision for common stock warrants of ~~zero~~$0 and ~~$2.5~~$16.1 million for the three months ended ~~June~~September 30, 2021 and 2020, respectively. The main drivers for the increase in revenue were the increase in GenDrive units recognized as revenue,

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an increase in hydrogen installations and a decrease in the provision for common stock warrants. There were 4,559 GenDrive units recognized as revenue during the three months ended September 30, 2021, compared to 3,709 for the three months ended September 30, 2020. There was hydrogen infrastructure revenue associated with 16 hydrogen sites during the three months ended September 30, 2021, compared to 13 during the three months ended September 30, 2020.

Revenue from sales of fuel cell systems and related infrastructure for the nine months ended September 30, 2021 increased $110.2 million, or 72.5%, to $262.1 million from $151.9 million for the nine months ended September 30, 2020. Included within revenue was a provision for common stock warrants of $27 thousand and $19.3 million for the nine months ended September 30, 2021 and 2020, respectively. The main drivers for the increase in revenue were the increase in GenDrive units recognized as revenue, an increase in hydrogen installations and a decrease in the provision for common stock warrants. There were ~~3,666~~9,533 GenDrive units recognized as revenue during the ~~three~~nine months ended ~~June~~September 30, 2021, compared to ~~2,683~~7,217 for the ~~three~~nine months ended ~~June~~September 30, 2020. There was hydrogen infrastructure revenue associated with 1638 hydrogen sites during the ~~three~~nine months ended ~~June~~September 30, 2021, compared to ~~four~~18 during the ~~three~~nine months ended ~~June 30, 2020.~~

Revenue from sales of fuel cell systems and related infrastructure for the six months ended June 30, 2021 increased $77.8 million, or 114.1%, to $146.1 million from $68.2 million for the six months ended June 30, 2020. Included within revenue was provision for common stock warrants of $27 thousand and $3.1 million for the three months ended June 30, 2021 and 2020, respectively. The main drivers for the increase in revenue were the increase in GenDrive units recognized as revenue, an increase in hydrogen installations and a decrease in the provision for common stock warrants. There were 4,974 GenDrive units recognized as revenue during the six months ended June 30, 2021, compared to 3,508 for the six months ended June 30, 2020. There was hydrogen infrastructure revenue associated with 22 hydrogen sites during the six months ended June 30, 2021, compared to five during the six months ended JuneSeptember 30, 2020.

Revenue – services performed on fuel cell systems and related infrastructure. Revenue from services performed on fuel cell systems and related infrastructure represents revenue earned on our service and maintenance contracts and sales of spare parts. At ~~June~~September 30, 2021, there were ~~15,723~~18,685 fuel cell units and 7178 hydrogen installations under extended maintenance contracts, an increase from ~~11,557~~13,421 fuel cell units and 4756 hydrogen installations at ~~June~~September 30, 2020. Revenue from services performed on fuel cell systems and related infrastructure for the three months ended ~~June~~September 30, 2021 decreased ~~$0.6~~$0.2 million, or ~~9.0%~~2.2%, to ~~$5.7~~$6.7 million as compared to ~~$6.2~~$6.8 million for the three months ended ~~June~~September 30, 2020. Included within revenue was provision for common stock warrants of ~~$131~~$69 thousand and ~~$466~~$688 thousand for the three months ended ~~June~~September 30, 2021 and 2020, respectively. The main drivers in decrease in revenue was a reduction in billings for run time hours that exceeded certain levels given certain changes in the overall contract, partially offset by the decrease in the provision for common stock warrants. Although the number of units and sites grew year over year, many of the units and sites deployed in the ~~second~~third quarter of 2021 were deployed late in the quarter and hence the full impact of associated service revenues will commence in the ~~third~~fourth quarter of 2021.

Revenue from services performed on fuel cell systems and related infrastructure for the ~~six~~nine months ended ~~June~~September 30, 2021 decreased ~~$1.0~~$1.2 million, or ~~8.1%~~6.1%, to ~~$11.7~~$18.4 million as compared to ~~$12.8~~$19.6 million for the ~~six~~nine months ended ~~June~~September 30, 2020. Included within revenue was provision for common stock warrants of ~~$271~~$340 thousand and ~~$724 thousand~~$1.4 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively. The main drivers in decrease in revenue was a reduction in billings for run time hours that exceeded certain levels given certain changes in the overall contract, partially offset by the decrease

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in the provision for common stock warrants. Although the number of units and sites grew year over year, many of the units and sites deployed in the ~~second~~third quarter of 2021 were deployed late in the quarter and hence the full impact of associated service revenues will commence in the ~~third~~fourth quarter of ~~quarter~~ 2021.

Revenue – Power Purchase Agreements. Revenue from PPAs represents payments received from customers for power generated through the provision of equipment and service. At ~~June~~September 30, 2021, there were 5261 GenKey sites associated with PPAs, as compared to 3236 at ~~June~~September 30, 2020. Revenue from PPAs for the three months ended ~~June~~September 30, 2021 increased ~~$1.8~~$2.7 million, or ~~27.1%~~40.6%, to ~~$8.4~~$9.3 million from $6.6 million for the three months ended ~~June~~September 30, 2020. Included within revenue was provision for common stock warrants of ~~$902~~$652 thousand and ~~$578~~$758 thousand for the three months ended ~~June~~September 30, 2021 and 2020, respectively. The increase in revenue from PPAs for the three months ended ~~June~~September 30, 2021 as compared to the three months ended ~~June~~September 30, 2020 was primarily attributable to the new sites for existing customers and new customers accessing the PPA subscription solution, and a slight decrease in the provision for common stock warrants.

Revenue from PPAs for the nine months ended September 30, 2021 increased $5.9 million, or 30.0%, to $25.5 million from $19.6 million for the nine months ended September 30, 2020. Included within revenue was provision for common stock warrants of $2.5 million and $1.9 million for the nine months ended September 30, 2021 and 2020, respectively. The increase in revenue from PPAs for the nine months ended September 30, 2021 as compared to the nine months ended September 30, 2020 was primarily attributable to the new sites for existing customers and new customers accessing the PPA subscription solution, offset in part by the increase in the provision for common stock warrants.

Revenue from PPAs for the six months ended June 30, 2021 increased $3.2 million, or 24.5%, to $16.2 million from $13.0 million for the six months ended June 30, 2020. Included within revenue was provision for common stock warrants40

Table of $1.8 million and $1.1 million for the six months ended June 30, 2021 and 2020, respectively. The increase in revenue from PPAs for the six months ended June 30, 2021 as compared to the six months ended June 30, 2020 was primarily attributable to the new sites for existing customers and new customers accessing the PPA subscription solution, offset in part by the increase in the provision for common stock warrants.Contents

Revenue – fuel delivered to customers. Revenue associated with fuel delivered to customers represents the sale of hydrogen to customers that has been purchased by the Company from a third party or generated on site. Revenue associated with fuel delivered to customers for the three months ended ~~June~~September 30, 2021 increased ~~$3.7~~$1.7 million, or ~~50.9%~~17.5%, to ~~$11.1~~$11.6 million from ~~$7.4~~$9.8 million for the three months ended ~~June~~September 30, 2020. Included within revenue was provision for common stock warrants of ~~$714~~$573 thousand and ~~$824 thousand~~$1.0 million for the three months ended ~~June~~September 30, 2021 and 2020, respectively. The increase in revenue was due to an increase in the number of sites with fuel contracts from 8194 as of ~~June~~September 30, 2020 to ~~125~~141 as of ~~June~~September 30, 2021, and a slight decrease in the provision for common stock warrants. A number of the new sites had not received fuel as of September 30, 2021, and therefore the increase in revenue from the third quarter of 2021 was not proportionate to the increase in new sites.

Revenue associated with fuel delivered to customers for the ~~six~~nine months ended ~~June~~September 30, 2021 increased ~~$7.5~~$9.3 million, or ~~51.3%~~37.8%, to ~~$22.3~~$33.8 million from ~~$14.7~~$24.5 million for the ~~six~~nine months ended ~~June~~September 30, 2020. Included within revenue was provision for common stock warrants of ~~$1.4~~$1.9 million and ~~$1.6~~$2.6 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively. The increase in revenue was due to an increase in the number of sites with fuel contracts from 8194 as of ~~June~~September 30, 2020 to ~~125~~141 as of ~~June~~September 30, 2021, and a slight decrease in the provision for common stock warrants. A number of the new sites had not received fuel as of September 30, 2021, and therefore the increase in revenue from the third quarter of 2021 was not proportionate to the increase in new sites.

Cost of Revenue

Cost of revenue – sales of fuel cell systems and related infrastructure. Cost of revenue from sales of fuel cell systems and related infrastructure includes direct materials, labor costs, and allocated overhead costs related to the manufacture of our fuel cells such as GenDrive units and GenSure stationary backup power units, and hydrogen fueling infrastructure referred to at the site level as hydrogen installations. Cost of revenue from sales of fuel cell systems and related infrastructure for the three months ended ~~June~~September 30, 2021 increased ~~135.8%~~28.5%, or ~~$46.0~~$19.8 million, to ~~$79.9~~$89.2 million, compared to ~~$33.9~~$69.4 million for the three months ended ~~June~~September 30, 2020. This increase was driven by the increase in GenDrive deployment volume and increase in hydrogen ~~installations.~~installations, as well as certain unexpected costs, including varied COVID related issues such as increased freight and material costs and higher labor costs given staffing and coverage issues. There were ~~3,666~~4,559 GenDrive units recognized as revenue during the three months ended ~~June~~September 30, 2021, compared to ~~2,683~~3,709 for the three months ended ~~June~~September 30, 2020. Revenue associated with 16 hydrogen installations was recognized during the three months ended ~~June~~September 30, 2021, compared to ~~four~~13 during the three months ended ~~June~~September 30, 2020. Gross profit generated from sales of fuel cell systems and related infrastructure ~~decreased~~increased to ~~19.5%~~23.1% for the three months ended ~~June~~September 30, 2021, compared to ~~29.0%~~17.0% for the three months ended ~~June~~September 30, 2020 primarily due to a decrease in the ~~mix impact~~reduction of revenue for warrants for sales of fuel cell systems and related infrastructure of $16.1 million. For the ~~equipment sold with varying margin profiles, including a higher mix~~three months ended September 30, 2021 and 2020, the reduction of ~~infrastructure~~revenue for warrants was $0 and ~~other new products, and mix~~$16.1 million, respectively. We expect these cost trends will continue into the end of ~~customer profiles with varying pricing structures.~~2021, but begin to abate once the global supply chain has normalized.

Cost of revenue from sales of fuel cell systems and related infrastructure for the ~~six~~nine months ended ~~June~~September 30, 2021 increased ~~127.5%~~68.9%, or ~~$61.0~~$80.8 million, to ~~$108.9~~$198.1 million, compared to ~~$47.9~~$117.3 million for the ~~six~~nine months ended ~~June~~September 30, 2020. This increase was driven by the increase in GenDrive deployment volume and increase in hydrogen ~~installations.~~installations, as well as certain unexpected costs, including varied COVID related issues such as increased freight and material costs and higher labor costs given staffing and coverage issues. There

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were ~~4,974~~9,533 GenDrive units recognized as revenue during the ~~six~~nine months ended ~~June~~September 30, 2021, compared to ~~3,508~~7,217 for the ~~six~~nine months ended ~~June~~September 30, 2020. Revenue associated with 2238 hydrogen installations was recognized during the ~~six~~nine months ended ~~June~~September 30, 2021, compared to ~~five~~18 during the ~~six~~nine months ended ~~June~~September 30, 2020. Gross profit generated from sales of fuel cell systems and related infrastructure ~~decreased~~increased to ~~25.4%~~24.4% for the ~~six~~nine months ended ~~June~~September 30, 2021, compared to ~~29.8%~~22.8% for the ~~six~~nine months ended ~~June~~September 30, 2020 primarily due to a decrease in the ~~mix impact~~reduction of revenue for warrants for sales of fuel cell systems and related infrastructure of $19.3 million. For the ~~equipment sold with varying margin profiles, including a higher mix~~nine months ended September 30, 2021 and 2020, the reduction of ~~infrastructure~~revenue for warrants was $0 and ~~other new products, and mix~~$19.3 million, respectively. We expect these cost trends will continue into the end of ~~customer profiles with varying pricing structures.~~2021, but begin to abate once the global supply chain has normalized.

Cost of revenue – services performed on fuel cell systems and related infrastructure. Cost of revenue from services performed on fuel cell systems and related infrastructure includes the labor, material costs and allocated overhead

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costs incurred for our product service and hydrogen site maintenance contracts and spare parts. At ~~June~~September 30, 2021, there were ~~15,723~~18,685 fuel cell units and 7178 hydrogen installations under extended maintenance contracts, an increase from ~~11,557~~13,421 fuel cell units and 4756 hydrogen installations at ~~June~~September 30, 2020, respectively. Cost of revenue from services performed on fuel cell systems and related infrastructure for the three months ended ~~June~~September 30, 2021 increased ~~99.1%~~103.7%, or ~~$7.7~~$9.5 million, to ~~$15.5~~$18.7 million, compared to ~~$7.8~~$9.2 million for the three months ended ~~June~~September 30, 2020. The increase in cost of revenue was due primarily to increase in volume and certain unexpected costs, including varied COVID related issues such as increased freight and material costs, ~~certain vendor transition~~higher labor costs given staffing and ~~force majeure~~coverage issues, ~~that impacted hydrogen infrastructure service costs,~~ and scrap charges associated with certain parts. Gross loss increased to ~~(172.7)~~(180.0)% for the three months ended ~~June~~September 30, 2021, compared to ~~(24.6)~~(34.4)% for the three months ended ~~June~~September 30, 2020, primarily due to certain unexpected costs, including varied COVID related issues, ~~certain vendor transition and force majeure issues that impacted hydrogen infrastructure service costs, and~~ scrap charges associated with certain parts as well as a reduction in billings for run time hours that exceeded certain levels given certain changes in the overall contract, partially offset by a change in the release of the previously recorded loss accrual from ~~$300~~$314 thousand during the three months ended ~~June~~September 30, 2020 to ~~$1.9~~$2.3 million during the three months ended ~~June~~September 30, 2021. We expect these cost trends will continue into the end of 2021, but begin to abate once the global supply chain has normalized.

Cost of revenue from services performed on fuel cell systems and related infrastructure for the ~~six~~nine months ended ~~June~~September 30, 2021 increased ~~57.6%~~73.1%, or ~~$10.4~~$20.0 million, to ~~$28.6~~$47.3 million, compared to ~~$18.1~~$27.3 million for the ~~six~~nine months ended ~~June~~September 30, 2020. The increase in cost of revenue was due primarily to certain unexpected costs, including varied COVID related issues such as increased freight costs, certain vendor transition and force majeure issues that impacted hydrogen infrastructure service costs, and scrap charges associated with certain parts. At September 30, 2021, there were 18,685 fuel cell units and 78 hydrogen installations under extended maintenance contracts, an increase from 13,421 fuel cell units and 56 hydrogen installations at September 30, 2020, respectively. Gross loss increased to ~~(143.7)~~(156.9)% for the ~~six~~nine months ended ~~June~~September 30, 2021, compared to ~~(42.0)~~(39.4)% for the ~~six~~nine months ended ~~June~~September 30, 2020, primarily due to certain unexpected costs including varied COVID related issues, certain vendor transition and force majeure issues that impacted hydrogen infrastructure service costs, and ~~a lower of cost or market adjustment~~scrap charges associated with certain ~~parts.~~parts, as well as a reduction in billings for run time hours that exceeded certain levels given certain changes in the overall contract. This was partially offset by a release of the previously recorded loss accrual from ~~$524~~$839 thousand during the ~~six~~nine months ended ~~June~~September 30, 2020 to ~~$3.8~~$6.1 million during the ~~six~~nine months ended ~~June~~September 30, 2021. We expect these cost trends will continue into the end of 2021, but begin to abate once the global supply chain has normalized.

Cost of revenue – provision for loss contracts related to service. The Company also recorded a provision for loss contracts related to service of ~~$6.7~~$7.5 million for the three months ended ~~June~~September 30, 2021, compared to ~~$0.7~~$25.2 million for the three months ended ~~June~~September 30, 2020. The decrease in the provision ~~increased~~for loss contracts related to service was primarily a function of a higher provision in 2020, due to an increase in estimated projected cost to service fuel cell systems and related infrastructure, as the Company determined in the third quarter of 2020 that certain cost down initiatives were taking longer to achieve than originally estimated. This was offset by the increase in the provision as a result of 16more new sites under service contract during the three months ended ~~June~~September 30, 2021 as compared to ~~four~~number of sites for the three months ended ~~June~~September 30, 2020. In addition, the Company determined during the third quarter of 2020 that the projected provision for the Amazon Warrant would be significantly higher than previously estimated.

The Company also recorded a provision for loss contracts related to service of ~~$8.2~~$15.6 million for the ~~six~~nine months ended ~~June~~September 30, 2021, compared to ~~$0.8~~$26.0 million for the ~~six~~nine months ended ~~June~~September 30, 2020. The decrease in the provision ~~increased~~for loss contracts related to service was primarily a function of a higher provision in 2020, due to an increase in estimated projected cost to service fuel cell systems and related infrastructure, as the Company determined in the third quarter of 2020 that certain cost down initiatives were taking longer to achieve than originally estimated. This was offset by the increase in the provision as a result of 22more new sites under service contract during the ~~six~~nine months ended ~~June~~September 30, 2021 as compared to ~~five~~number of sites for the three months ended September 30, 2020. In addition, the Company determined during the ~~six months ended June 30, 2020.~~third quarter of 2020 that the projected provision for the Amazon Warrant would be significantly higher than previously estimated.

Cost of revenue – Power Purchase Agreements. Cost of revenue from PPAs includes depreciation of assets utilized and service costs to fulfill PPA obligations and interest costs associated with certain financial institutions for leased equipment. At ~~June~~September 30, 2021, there were 5261 GenKey sites associated with PPAs, as compared to 3236 at ~~June~~September 30, 2020. Cost of revenue from PPAs for the three months ended ~~June~~September 30, 2021 increased ~~53.3%~~111.6%, or ~~$7.7~~$16.5 million,

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to ~~$22.2~~$31.2 million from ~~$14.5~~$14.7 million for the three months ended ~~June~~September 30, 2020 due to the increase in units and sites under PPA contract as well as certain COVID related issues such as increased freight costs, ~~certain force majeure issues that impacted hydrogen infrastructure service costs, and~~ scrap charges associated with certain ~~parts.~~parts and an impairment charge of $1.3 million. Gross loss increased to ~~(165.9)~~(234.7)% for the three months ended ~~June~~September 30, 2021, as compared to ~~(120.5)~~(122.4)% for the three months ended ~~June~~September 30, 2020 primarily due to certain

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COVID related issues, ~~certain force majeure issues that impacted hydrogen infrastructure service costs, and a lower of cost or market adjustment~~scrap charges associated with certain ~~parts.~~parts, and an impairment charge of $1.3 million.

Cost of revenue from PPAs for the ~~six~~nine months ended ~~June~~September 30, 2021 increased ~~38.6%~~63.1%, or ~~$11.3~~$27.8 million, to ~~$40.6~~$71.8 million from ~~$29.3~~$44.0 million for the ~~six~~nine months ended ~~June~~September 30, 2020 primarily due to the increase in units and sites under PPA contract as well as certain COVID related issues such as increased freights costs, certain force majeure issues that impacted hydrogen infrastructure service costs, ~~and~~ scrap charges associated with certain ~~parts.~~parts and an impairment charge of $1.3 million. Gross loss increased to ~~(150.7)~~(181.4)% for the ~~six~~nine months ended ~~June~~September 30, 2021, as compared to ~~(125.2)~~(124.3)% for the ~~six~~nine months ended ~~June~~September 30, 2020 primarily due to certain COVID related issues, certain force majeure issues that impacted hydrogen infrastructure service costs, ~~and a lower of cost or market adjustment~~scrap charges associated with certain ~~parts.~~parts, and an impairment charge of $1.3 million.

Cost of revenue – fuel delivered to customers. Cost of revenue from fuel delivered to customers represents the purchase of hydrogen from suppliers that ultimately is sold to customers and costs for onsite generation. Cost of revenue from fuel delivered to customers for the three months ended ~~June~~September 30, 2021 increased ~~264.1%~~63.8%, or ~~$29.3~~$10.9 million, to ~~$40.3~~$27.9 million from ~~$11.1~~$17.0 million for the three months ended ~~June~~September 30, 2020. The increase was primarily due to higher volume of hydrogen delivered to customer sites as a result of an increase in the number of hydrogen installations completed under GenKey agreements, costs associated with managing availability of molecule in the supply chain as well as a shortage of delivery capability (both drivers and delivery assets), and higher fuel costs. As a result of these higher costs, gross loss increased to (141.1)% during the three months ended September 30, 2021, compared to (72.9)% during the three months ended September 30, 2020. We expect higher hydrogen molecule costs to continue at least through 2021.

Cost of revenue from fuel delivered to customers for the nine months ended September 30, 2021 increased 129.7%, or $51.0 million, to $90.3 million from $39.3 million for the nine months ended September 30, 2020. The increase was primarily due to higher volume of hydrogen delivered to customer sites as a result of an increase in the number of hydrogen installations completed under GenKey agreements, and higher fuel costs. ~~The increase in~~Also significantly impacting the cost of fuel ~~costs~~for the nine months ended September 30, 2021 was ~~due primarily to~~a vendor transition and force majeure events primarily related to hydrogen plant ~~shutdowns that impacted the cost of fuel.~~shutdowns. Gross loss increased to ~~(262.6)~~(167.2)% during the ~~three~~nine months ended ~~June~~September 30, 2021, compared to ~~(50.2)~~(60.3)% during the ~~three~~nine months ended June 30, 2020. The increased gross loss is primarily due to the vendor transition and force majeure issues mentioned above. The costs associated with vendor transition issues amounted to approximately $14.6 million for the three months ended June 30, 2021, and are recorded in the Company’s unaudited interim condensed consolidated statement of operations as cost of revenue – fuel delivered to customers for the three months ended June 30, 2021. The Company also purchased certain fuel tanks from the fuel provider during the three months ended June 30, 2021.

Cost of revenue from fuel delivered to customers for the six months ended June 30, 2021 increased 179.8%, or $40.1 million, to $62.5 million from $22.3 million for the six months ended June 30, 2020. The increase was primarily due to higher volume of hydrogen delivered to customer sites as a result of an increase in the number of hydrogen installations completed under GenKey agreements and higher fuel costs. The increase in fuel costs was primarily due to vendor transition and force majeure events primarily related to hydrogen plant shutdowns that impacted the cost of fuel. Gross loss increased to (180.8)% during the six months ended June 30, 2021, compared to (51.9)% during the six months ended JuneSeptember 30, 2020. The increased gross loss is primarily due to the vendor transition and force majeure issues mentioned above. The cost associated with the vendor transition amounted to approximately ~~$16.0~~$16.3 million for the ~~six~~nine months ended ~~June~~September 30, 2021, which ~~are~~were recorded in the Company’s unaudited interim condensed consolidated statement of operations as cost of revenue – fuel delivered to ~~customers for the six months ended June 30, 2021.~~customers. The Company also purchased certain fuel tanks from the fuel provider during the ~~six~~nine months ended ~~June~~September 30, 2021. We expect higher hydrogen molecule costs to continue at least through 2021.

Expenses

Research and development expense. Research and development (“R&D”) expense includes: materials to build development and prototype units, cash and non-cash compensation and benefits for the engineering and related staff, expenses for contract engineers, fees paid to consultants for services provided, materials and supplies consumed, facility related costs such as computer and network services, and other general overhead costs associated with our research and development activities.

Research and development expense for the three months ended ~~June~~September 30, 2021 increased ~~$6.4~~$9.2 million, or ~~130.8%~~125.2%, to ~~$11.2~~$16.6 million, from ~~$4.9~~$7.4 million for the three months ended ~~June~~September 30, 2020. The overall growth in R&D investment is commensurate with the Company’s future expansion into new markets, new product lines, and varied vertical integrations. The average number of R&D employees was ~~119~~139 at ~~June~~September 30, 2020 compared to ~~216~~264 at ~~June~~September 30, 2021.

Research and development expense for the ~~six~~nine months ended ~~June~~September 30, 2021 increased ~~$11.3~~$20.6 million, or ~~117.6%~~120.9%, to ~~$21.0~~$37.6 million, from ~~$9.6~~$17.0 million for the ~~six~~nine months ended ~~June~~September 30, 2020. The overall growth in R&D

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investment is commensurate with the Company’s future expansion into new markets, new product lines, and varied vertical integrations. The average number of R&D employees was ~~117~~132 at ~~June~~September 30, 2020 compared to ~~191~~227 at ~~June~~September 30, 2021.

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Selling, general and administrative expenses. Selling, general and administrative expenses includes cash and non-cash compensation, benefits, amortization of intangible assets and related costs in support of our general corporate functions, including general management, finance and accounting, human resources, selling and marketing, information technology and legal services.

Selling, general and administrative expenses for the three months ended ~~June~~September 30, 2021, increased ~~$17.0~~$25.2 million, or ~~78.6%~~146.5%, to ~~$38.7~~$42.4 million from ~~$21.6~~$17.2 million for the three months ended ~~June~~September 30, 2020. This increase was primarily related to increases in salaries and stock-based compensation due to increased headcount and branding ~~expenses, in addition to costs associated with the restatement of our previous years’ financial statements.~~

expenses.

Selling, general and administrative expenses for the ~~six~~nine months ended ~~June~~September 30, 2021, increased ~~$31.5~~$56.7 million, or ~~96.1%~~113.5%, to ~~$64.2~~$106.7 million from ~~$32.8~~$50.0 million for the ~~six~~nine months ended ~~June~~September 30, 2020. This increase was primarily related to increases in salaries and stock-based compensation due to increased headcount and branding expenses, in addition to costs associated with the restatement of our previous years’ financial statements.

Contingent Consideration. The fair value of the contingent consideration related to the Giner ELX, Inc. and United Hydrogen Group Inc. acquisitions was remeasured as of ~~June~~September 30, 2021, which resulted in a ~~$560 thousand benefit~~$8.5 million charge for the three months ended ~~June~~September 30, 2021 and a ~~$230 thousand~~$8.8 million charge for the ~~six~~nine months ended ~~June~~September 30, 2021, both of which are reflected in the unaudited interim condensed consolidated statement of operations for the three and ~~six~~nine months ended ~~June~~September 30, 2021, ~~respectively.~~respectively, primarily due to an increase in projected revenues associated with electrolyzers.

Interest, net. Interest, net consists of interest expense related to our long-term debt, convertible senior notes, obligations under finance leases and our finance ~~obligations.~~obligations, as well as interest income. Interest decreased ~~$3.1~~$11.9 million, or ~~23.2%~~(68.9)%, from ~~$13.4~~$17.2 million for the three months ended ~~June~~September 30, 2020 to ~~$10.3~~$5.4 million for the three months ended ~~June~~September 30, 2021. Interest decreased ~~$2.6~~$14.5 million, or ~~10.4%~~(34.2)%, from ~~$25.2~~$42.4 million for the ~~six~~nine months ended ~~June~~September 30, 2020 to ~~$22.5~~$27.9 million for the ~~six~~nine months ended ~~June~~September 30, 2021. ~~Since June 2020, the Company borrowed approximately $50.0 million of additional long-term debt at a 9.5% interest rate, and entered into additional sale/leaseback finance obligation arrangements.~~ This decrease was ~~offset~~primarily driven by the exchange and conversion during both 2020 and 2021 of ~~both~~ the 7.5% Convertible Senior ~~Notes~~Note and 5.5% Convertible Senior Notes, and the adoption of ASU 2020-06 which reduced the noncash interest expense on convertible notes.

Other expense, net. Other expense, net consists of other expenses related to our foreign currency exchange losses, offset by interest and other income consisting primarily of interest earned on our cash and cash equivalents, restricted cash and available-for-sale securities. ~~This~~Other expense, net decreased ~~$24~~$253 thousand for the three months ended ~~June~~September 30, 2021 in comparison to the three months ended ~~June~~September 30, ~~2020. This increased $117~~2020 and decreased $134 thousand for the ~~six~~nine months ended ~~June~~September 30, 2021 in comparison to the ~~six~~nine months ended ~~June~~September 30, 2020.

~~Net realized gain (loss)~~Realized loss on ~~investments.~~investments, net. ~~Net realized gain (loss)~~Realized loss on investments, net consists of the sales and maturities related to available-for-sale debt securities. ~~This increased $18 thousand for both~~For the three months and ~~six~~nine months ended ~~June~~September 30, 2021, the Company had $254 thousand and $236 thousand, respectively, of net realized loss on investments. The Company did not have an investment portfolio in ~~comparison to the three~~2020, and ~~six months ended June 30, 2020.~~as such there were no realized gains or losses.

Change in fair value of equity securities. Change in fair value of equity securities consists of the changes in fair value for equity securities from the purchase date to the end of the period. ~~This increased $323~~For the three months and nine months ended September 30, 2021, the Company had $607 thousand ~~for~~and $284 thousand, respectively, of change in the fair value of equity securities. The Company did not have an investment portfolio in 2020, and as such there were no realized gains or losses.

Loss on equity method investments. Loss on equity method investments consists of our interest in Hyvia, which is our 50/50 joint venture with Renault. For both the three and ~~six~~nine months ended ~~June~~September 30, 2021, the Company recorded a loss of $1.7 million on equity method investments as HyVia had not yet started commercial operations. The Company did not have any equity method investments in ~~comparison to the three~~2020, and ~~six months ended June 30, 2020.~~as such there were no realized gains or losses.

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Income Tax

The Company did not record any income tax expense or benefit for the three or ~~six~~nine months ended ~~June~~September 30, 2021. The Company recognized an income tax benefit for the three and ~~six~~nine months ended ~~June~~September 30, 2020 of ~~$17.4 million.~~$6.6 million and $24.0 million, respectively. Income tax benefit for the three and ~~six~~nine months ended ~~June~~September 30, 2020 included ~~$12.2~~$6.6 million and $19.0, million, respectively, resulting from the intraperiod tax allocation rules under ASC Topic 740-20, Intraperiod Tax Allocation, under which the Company recognized an income tax benefit resulting from a source of future taxable income attributable to the net credit to additional paid-in capital related to the issuance of the 3.75% Convertible Senior Notes, offset by the partial extinguishment of the 5.5% Convertible Senior Notes. In addition, the Company recorded ~~$5.2~~$5.0 million of income tax benefit for the three and ~~six~~nine months ended ~~June~~September 30,

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2020 related to the recognition of net deferred tax liabilities in connection with the Giner ELX, Inc. acquisition, which resulted in a corresponding reduction in our deferred tax asset valuation allowance. The Company has not changed its overall conclusion with respect to the need for a valuation allowance against its net deferred tax assets, which remain fully reserved.

Liquidity and Capital Resources

Liquidity

As of ~~June~~September 30, 2021 and December 31, 2020, the Company had ~~$3.2~~$3.4 billion and $1.3 billion of cash and cash equivalents and ~~$429.4~~$481.2 million and $321.9 million of restricted cash, respectively. In January and February 2021, the Company issued and sold in a registered equity offering an aggregate of 32.2 million shares of its common stock at a purchase price of $65.00 per share for net proceeds of approximately ~~$1.8~~$2.0 billion. Furthermore, in February 2021, the Company completed the previously announced sale of its common stock in connection with a strategic partnership with SK Holdings to accelerate the use of hydrogen as an alternative energy source in Asian markets. The Company sold 54,996,188 shares of its common stock to a subsidiary of SK Holdings at a purchase price of $29.2893 per share, or an aggregate purchase price of approximately $1.6 billion.

The Company has continued to experience negative cash flows from operations and net losses. The Company incurred net losses attributable to common stockholders of ~~$160.4~~$267.1 million and ~~$46.9~~$112.1 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively, and had an accumulated deficit of ~~$2.1~~$2.2 billion at ~~June~~September 30, 2021.

The Company’s significant obligations consisted of the following as of ~~June~~September 30, 2021:

(i)

Operating and finance leases totaling ~~$142.1~~$162.7 million and ~~$15.1~~$19.8 million, respectively, of which ~~$19.9~~$23.3 million and ~~$2.7~~$2.8 million, respectively, are due within the next 12 months. These leases are primarily related to sale/leaseback agreements entered into with various financial institutions to facilitate the Company’s commercial transactions with key customers.

(ii)

Finance obligations totaling ~~$195.8~~$207.8 million, of which approximately ~~$33.8~~$35.6 million is due within the next 12 months. Finance obligations consist primarily of debt associated with the sale of future revenues and failed sale/leaseback transactions.

(iii)

Long-term debt, primarily related to the Company’s Loan Agreement with Generate Capital totaling ~~$160.5~~$147.3 million, of which ~~$30.4~~$23.5 million is classified as short term on our consolidated balance sheets. See Note 9, “Long-Term Debt”, for more details.

(iv)

Convertible senior notes totaling ~~$192.0~~$192.3 million at ~~June~~September 30, 2021. See Note 10, “Convertible Senior Notes” for more details.

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The Company’s working capital was ~~$4.7~~$4.5 billion at ~~June~~September 30, 2021, which included unrestricted cash and cash equivalents of ~~$3.2~~$3.4 billion. The Company plans to invest a portion of its available cash to expand its current production and manufacturing capacity and to fund strategic acquisitions and partnerships and capital projects. In the fourth quarter of 2021, the Company expects to invest approximately €5 million, of which €2.5 million will be in the form of a shareholder loan. Future use of the Company’s funds is discretionary and the Company believes that its working capital and cash position will be sufficient to fund its operations for at least one year after the date the financial statements are issued.

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Public and Private Offerings of Equity and Debt

Common Stock Issuances

In February 2021, the Company completed the previously announced sale of its common stock in connection with a strategic partnership with SK Holdings to accelerate the use of hydrogen as an alternative energy source in Asian markets. The Company sold 54,966,188 shares of its common stock to a subsidiary of SK Holdings at a purchase price of $29.2893 per share, or an aggregate purchase price of approximately $1.6 billion.

Convertible Senior Notes

In May 2020, the Company issued $212.5 million in aggregate principal amount of 3.75% Convertible Senior Notes. The total net proceeds from this offering, after deducting costs of the issuance, were $205.1 million. The Company used $90.2 million of the net proceeds from the offering of the 3.75% Convertible Senior Notes to repurchase $66.3 million of the $100 million in aggregate principal amount of the 5.5% Convertible Senior Notes. In addition, the Company used approximately $16.3 million of the net proceeds from the offering of the 3.75% Convertible Senior Notes to enter into privately negotiated capped called transactions. In the fourth quarter of 2020, $33.5 million of the remaining 5.5% Convertible Senior Notes were converted into 14.6 million shares of common stock, resulting in a gain of approximately $4.5 million which was recorded on the consolidated statement of operations on the gain (loss) on extinguishment of debt line. As of December 31, 2020, approximately $160 thousand aggregate principal amount of the 5.5% Convertible Senior Notes remained outstanding, all of which were converted to common stock in January 2021.

In September 2019, the Company issued $40.0 million in aggregate principal amount of 7.5% Convertible Senior Note. The Company’s total obligation, net of interest accretion, due to the holder was $48.0 million. The total net proceeds from this offering, after deducting costs of the issuance, were $39.1 million. On July 1, 2020, the note automatically converted fully into 16.0 million shares of common stock.

Secured Debt

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During the year ended December 31, 2020, the Company, under another series of amendments to the Loan Agreement, borrowed an incremental $100.0 million. As part of the amendment to the Loan Agreement, the Company’s interest rate on the secured term loan facility was reduced to 9.50% from 12.00% per annum, and the maturity date was extended to October 31, 2025 from October 6, 2022. On ~~June~~September 30, 2021, the outstanding balance under the Term Loan Facility was ~~$150.8~~$137.7 million. In addition to the ~~Generate Capital~~Term Loan Facility, on ~~June~~September 30, 2021 there was approximately ~~$10.0~~$9.5 million of debt outstanding related to the United Hydrogen Group, Inc. acquisition.

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As of ~~June~~September 30, 2021, the Term Loan Facility requires the principal balance as of each of the following dates not to exceed the following (in thousands):


December 31, 2021	$	127,317
December 31, 2022		93,321
December 31, 2023		62,920
December 31, 2024		33,692
December 31, 2025		—

Several key indicators of liquidity are summarized in the following table (in thousands):


	Six months		Year		Nine months		Year
	ended or at		ended or at		ended or at		ended or at
	June 30, 2021		December 31, 2020		September 30, 2021		December 31, 2020
Cash and cash equivalents at end of period	$	3,160,170	$	1,312,404	$	3,371,962	$	1,312,404
Restricted cash at end of period		429,393		321,880		481,230		321,880
Working capital at end of period		4,715,333		1,380,830		4,518,052		1,380,830
Net loss attributable to common stockholders		(160,380)		(596,181)		(267,051)		(596,181)
Net cash used in operating activities		(246,635)		(155,476)		(348,501)		(155,476)
Net cash used in investing activities		(1,405,217)		(95,334)		(1,014,294)		(95,334)
Net cash provided by financing activities		3,607,294		1,515,529		3,581,762		1,515,529

3.75% Convertible Senior Notes

On May 18, 2020, the Company issued $200.0 million in aggregate principal amount of 3.75% Convertible Senior Notes due June 1, 2025, in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act. On May 29, 2020, the Company issued an additional $12.5 million in aggregate principal amount of 3.75% Convertible Senior Notes.

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At issuance in May 2020, the total net proceeds from the 3.75% Convertible Senior Notes were as follows:

Amount

(in thousands)
Principal amount
$
212,463
Less initial purchasers' discount

(6,374)

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			Amount
			(in thousands)
Principal amount			$	212,463
Less initial purchasers' discount				(6,374)
Less cost of related capped calls		(16,253)		(16,253)
Less other issuance costs		(617)		(617)
Net proceeds	$	189,219	$	189,219

The 3.75% Convertible Senior Notes are senior, unsecured obligations of the Company and rank senior in right of payment to any of the Company’s indebtedness that is expressly subordinated in right of payment to the notes, equal in right of payment to any of the Company’s existing and future liabilities that are not so subordinated, including the Company’s $100 million in aggregate principal amount of the 5.5% Convertible Senior Notes, effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the collateral securing such indebtedness, and structurally subordinated to all indebtedness and other liabilities, including trade payables, of its current or future subsidiaries.

upon the occurrence of specified corporate events, as described in the indenture governing the 3.75% Convertible Senior Notes.

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2021, certain conditions allowing holders of the 3.75% Convertible Senior Notes to convert were met. The 3.75% Convertible Senior Notes are therefore convertible during the calendar quarter ending September 30, 2021 at the conversion rate discussed above. During the ~~six~~nine months ended ~~June~~September 30, 2021, $15.2 million of the 3.75% Convertible Senior Notes were converted and the Company issued approximately 3.0 million shares of common stock in conjunction with these conversions.

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The 3.75% Convertible Senior Notes consisted of the following (in thousands):


	June 30,		September 30,
	2021		2021
Principal amounts:
Principal	$	197,278	$	197,278
Unamortized debt issuance costs (1)		(5,267)		(4,958)
Net carrying amount	$	192,011	$	192,320

The following table summarizes the total interest expense, the amortization of debt issuance costs and the effective interest rate related to the 3.75% Convertible Senior Notes (in thousands, except for effective interest rate):


	June 30,		September 30,
	2021		2021
Interest expense	$	1,850	$	1,849
Amortization of debt issuance costs		306		306
Total		2,156		2,155

Effective interest rate		4.50%

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Effective interest rate		4.50%

Based on the closing price of the Company’s common stock of ~~$34.19~~$25.54 on ~~June~~September 30, 2021, the if-converted value of the notes was greater than the principal amount. The estimated fair value of the note at ~~June~~September 30, 2021 was approximately ~~$1.3~~$1.0 billion. The fair value estimation was primarily based on an active stock exchange trade on ~~June 24,~~September 30, 2021 of the 3.75% Convertible Senior ~~Convertible Note.~~Notes. See Note 15, “Fair Value ~~Measurements”~~Measurements,” for a description of the fair value hierarchy.

Capped Call

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In conjunction with the pricing of the 3.75% Convertible Senior Notes, the Company entered into privately negotiated capped call transactions (the “3.75% Notes Capped Call”) with certain counterparties at a price of $16.2 million. The 3.75% Notes Capped Call covers, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that underlie the initial 3.75% Convertible Senior Notes and is generally expected to reduce potential dilution to the Company’s common stock upon any conversion of the 3.75% Convertible Senior Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted notes, as the case may be, with such reduction and/or offset subject to a cap based on the cap price. The cap price of the 3.75% Notes Capped Call is initially $6.7560 per share, which represents a premium of approximately 60%over the last then-reported sale price of the Company’s common stock of $4.11 per share on the date of the transaction and is subject to certain adjustments under the terms of the 3.75% Notes Capped Call. The 3.75% Notes Capped Call becomes exercisable if the conversion option is exercised.

The net cost incurred in connection with the 3.75% Notes Capped Call ~~was~~were recorded as a reduction to additional paid-in capital in the unaudited interim condensed consolidated balance sheets.

5.5% Convertible Senior Notes

In May 2020, the Company used a portion of the net proceeds from the issuance of the 3.75% Convertible Senior Notes to finance the cash portion of the partial repurchase of the 5.5% Convertible Senior Notes, which consisted of a repurchase of approximately $66.3 million in aggregate principal amount of the 5.5% Convertible Senior Notes in privately-negotiated transactions for aggregate consideration of $128.9 million, consisting of approximately $90.2 million in cash and approximately 9.4 million shares of the Company’s common stock. The partial repurchase of the 5.5% Convertible Senior Notes resulted in a $13.2 million gain on early debt extinguishment. In the fourth quarter of 2020, $33.5 million of the remaining 5.5% Convertible Senior Notes were converted into 14.6 million shares of common stock which resulted in a gain of approximately $4.5 million ~~and~~which was recorded on the ~~unaudited interim condensed~~ consolidated statement of operations on the gain (loss) on extinguishment of debt line.

Capped Call

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Common Stock Forward

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3.75% Convertible Senior Notes and the partial repurchase of the 5.5% Convertible Senior Notes, the Company amended and extended the maturity of the Common Stock Forward to June 1, 2025. The number of shares of common stock that the Company will ultimately repurchase under the Common Stock Forward is subject to customary anti-dilution adjustments. The Common Stock Forward is subject to early settlement or settlement with alternative consideration in the event of certain corporate transactions.

The book value of the 5.5% Notes Capped Call and Common Stock Forward are not remeasured.

During the fourth quarter of 2020, the Common Stock Forward was partially settled and, as a result, the Company received 4.4 million shares of its common stock. During the ~~first quarter of 2021, 5.9 million~~three 0 shares were settled and ~~were~~ received by the Company. During the ~~second quarter of~~nine months ended September 30, 2021, ~~an additional 2.2~~8.1 million shares were settled and received by the Company.

Amazon Transaction Agreement

Provision for the second and third tranches of Amazon Warrant Shares is recorded as a reduction of revenue because they represent consideration payable to a customer.

The fair value of the second tranche of Amazon Warrant Shares was measured at January 1, 2019, upon adoption of ASU 2019-08. The second tranche of 29,098,260 Amazon Warrant Shares vested in four equal installments, as Amazon or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate. The last installment of the second tranche vested on November 2, 2020. Revenue reductions of $9.0 million, $4.1 million and $9.8 million associated with

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the second tranche of Amazon Warrant Shares were recorded in 2020, 2019 and 2018, respectively, under the terms of the original Amazon Warrant.

Under the terms of the original Amazon Warrant, the third tranche of 20,368,784 Amazon Warrant Shares vests in eight equal installments, as Amazon or its affiliates, directly or indirectly through third parties, made an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The measurement date for the third tranche of Amazon Warrant Shares was November 2, 2020, when their exercise price was determined, as discussed further below. The fair value of the third tranche of Amazon Warrant Shares was determined to be $10.57 each. During 2020, revenue reductions of $24.1 million associated with the third tranche Amazon Warrant Shares were recorded under the terms of the original Amazon Warrant, prior to the December 31, 2020 waiver described below.

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The $399.7 million reduction to revenue was recognized during the year ended December 31, 2020 because the Company concluded such amount was not recoverable from the margins expected from future purchases by Amazon under the Amazon Warrant, and no exclusivity or other rights were conferred to the Company in connection with the December 31, 2020 waiver. Additionally, for the year ended December 31, 2020, the Company recorded a reduction to the provision for warrants of $12.8 million in connection with the release of the service loss accrual.

At December 31, 2020, all 55,286,696 of the Amazon Warrant Shares had ~~vested, however for~~vested. For service contracts entered into prior to December 31, 2020, the warrant charge associated with that revenue was capitalized and is subsequently amortized over the life of the service contract. The total amount of provision for common stock warrants recorded as a reduction of revenue for the Amazon Warrant during the three months ended ~~June~~September 30, 2021 and 2020 was ~~$105~~ $106thousand and ~~$3.4~~$17.3 million, respectively. The amount of provision for common stock warrants recorded as a reduction of revenue for the Amazon Warrant during the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020 was ~~$209~~$315 thousand and ~~$4.7~~$22.0 million, respectively. During the three and nine months ended ~~March 31, 2021 and June~~September 30, 2021, the Amazon Warrant was exercised with respect to ~~9,214,449~~3,501,640 and 17,461,994 shares of common stock, ~~and 4,745,905 shares of common stock,~~ respectively. ~~In July 2021, the Amazon Warrant was exercised with respect to an additional 3,501,640 shares of common stock.~~

The exercise price for the first and second tranches of Amazon Warrant Shares was $1.1893 per share. The exercise price of the third tranche of Amazon Warrant Shares was $13.81 per share, which was determined pursuant to the terms of the Amazon Warrant as an amount equal to ninety percent (90%) of the 30-day volume weighted average share price of the Company’s common stock as of November 2, 2020, the final vesting date of the second tranche of Amazon Warrant Shares. The Amazon Warrant ~~was~~is exercisable through April 4, 2027. The Amazon Warrant provides for net share settlement that, if elected by the holder, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Amazon Warrant provides for certain adjustments that may be made to the exercise price and the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. The Amazon Warrant is classified as an equity instrument.

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The Company used the following assumptions for its Amazon Warrant:



	December 31, 2020	November 2, 2020
Risk-free interest rate	0.58%	0.58%
Volatility	75.00%	75.00%
Expected average term	6.26	6.42
Exercise price	$13.81	$13.81
Stock price	$33.91	$15.47

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Walmart Transaction Agreement

The majority of the Walmart Warrant Shares will vest based on Walmart’s payment of up to $600.0 million to the Company in connection with Walmart’s purchase of goods and services from the Company. The first tranche of 5,819,652 Walmart Warrant Shares vested upon the execution of the Walmart Warrant and was fully exercised as of December 31, 2020. Accordingly, $10.9 million, the fair value of the first tranche of Walmart Warrant Shares, was recorded as a provision for common stock warrants and presented as a reduction to revenue on the consolidated statements of operations during 2017. All future provision for common stock warrants is measured based on their grant-date fair value and recorded as a charge against revenue. The second tranche of 29,098,260 Walmart Warrant Shares vests in four installments of 7,274,565 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $200.0 million in the aggregate. The exercise price for the first and second tranches of Walmart Warrant Shares is $2.1231 per share. After Walmart has made payments to the Company totaling $200.0 million, the third tranche of 20,368,784 Walmart Warrant Shares will vest in eight installments of 2,546,098 Walmart Warrant Shares each time Walmart or its affiliates, directly or indirectly through third parties, make an aggregate of $50.0 million in payments for goods and services to the Company, up to payments totaling $400.0 million in the aggregate. The exercise price of the third tranche of Walmart Warrant Shares will be an amount per share equal to ninety percent (90%) of the 30-day volume weighted average share price of the common stock as of the final vesting date of the second tranche of Walmart Warrant Shares, provided that, with limited exceptions, the exercise price for the third tranche will be no lower than $1.1893. The Walmart Warrant is exercisable through July 20, 2027.

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31, 2021, the Walmart Warrant had been exercised with respect to 7,274,565 shares of common stock. There were no exercises during the ~~three months ended June 30,~~second or third quarter of 2021.

Operating and Finance Lease Liabilities

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the lessor to renew the lease at market rental rates. No residual value guarantees are contained in the leases. No financial covenants are contained within the ~~lease,~~lease; however there are customary operational covenants such as assurance the Company properly maintains the leased assets and carries appropriate insurance, etc. The leases include credit support in the form of either cash, collateral or letters of credit. See Note 19, “Commitments and Contingencies” for a description of cash held as security associated with the leases.

Future minimum lease payments under operating and finance leases (with initial or remaining lease terms in excess of one year) as of ~~June~~September 30, 2021 were as follows (in thousands):


			Finance		Total				Finance		Total
		Operating Lease	Lease		Lease			Operating Lease	Lease		Lease
		Liability	Liability		Liabilities			Liability	Liability		Liabilities
Remainder of 2021	$	17,298	$	1,826	$	19,124	$	9,929	$	1,019	$	10,948
2022		34,579		3,731		38,310		39,932		4,012		43,944
2023		34,636		3,708		38,344		39,989		3,989		43,978
2024		34,636		3,715		38,351		39,957		3,996		43,953
2025 and thereafter		73,276		4,921		78,197		90,241		10,843		101,084
Total future minimum payments		194,425		17,901		212,326		220,048		23,859		243,907
Less imputed interest		(52,307)		(2,793)		(55,100)		(57,364)		(4,074)		(61,438)
Total	$	142,118	$	15,108	$	157,226	$	162,684	$	19,785	$	182,469

Rental expense for all operating leases was ~~$8.2~~$9.6 million and ~~$7.8~~$8.1 million for the three months ended ~~June~~September 30, 2021 and 2020, respectively. Rental expense for all operating leases was ~~$16.3~~$25.8 million and ~~$12.5~~$20.6 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

The gross profit on sale/leaseback transactions for all operating leases was ~~$19.5~~$30.7 million and ~~$14.4~~$25.2 million for the three months ended ~~June~~September 30, 2021 and 2020, respectively. The gross profit on sale/leaseback transactions for all operating leases was ~~$35.4~~$66.1 million and ~~$19.7~~$44.9 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was ~~$24.0~~$26.6 million and ~~$2.9~~$24.6 million for the three months ended ~~June~~September 30, 2021 and 2020, respectively. Right of use assets for sale/leaseback transactions obtained in exchange for new operating lease liabilities was ~~$35.9~~$62.5 million and ~~$8.1~~$32.7 million for the ~~six~~nine months ended ~~June~~September 30, 2021 and 2020, respectively.

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At ~~June~~September 30, 2021 and December 31, 2020, the right of use assets associated with operating leases was ~~$172.3~~$200.2 million and $136.9 million, respectively. The accumulated depreciation for these right of use assets was ~~$26.5~~$32.3 million and $19.9 million at ~~June~~September 30, 2021 and December 31, 2020, respectively.

At ~~June~~September 30, 2021 and December 31, 2020, the right of use assets associated with finance leases was ~~$17.3~~$22.8 million and $5.7 million, respectively. The accumulated depreciation for these right of use assets was ~~$380~~$757 thousand and $102 thousand at ~~June~~September 30, 2021 and December 31, 2020, respectively.

At ~~June~~September 30, 2021 and December 31, 2020, security deposits associated with sale/leaseback transactions were ~~$3.1~~$3.3 million and $5.8 million, respectively, and were included in other assets in the consolidated balance ~~sheets.~~sheets

Other information related to the operating leases are presented in the following table:

Six months ended

Six months ended

June 30, 2021

June 30, 2020
Cash payments (in thousands)
$
16,081

$
9,674

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			Nine months ended		Nine months ended
			September 30, 2021		September 30, 2020
Cash payments (in thousands)			$	25,726	$	14,954
Weighted average remaining lease term (years)	5.82	4.34		5.72		4.55
Weighted average discount rate	11.4%	12.1%		11.2%		11.8%

Other information related to the finance leases are presented in the following table:


		Six months ended		Six months ended	Nine months ended		Nine months ended
		June 30, 2021		June 30, 2020	September 30, 2021		September 30, 2020
Cash payments (in thousands)	$	1,166	$	132	$	2,128	$	252
Weighted average remaining lease term (years)		4.86		6.74		4.57		6.51
Weighted average discount rate		6.9%		9.6%		6.9%		9.6%

Finance Obligation

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Future minimum payments under finance obligations notes above as of ~~June~~September 30, 2021 were as follows (in thousands)


					Total						Total
		Sale of Future		Sale/leaseback	Finance			Sale of Future		Sale/leaseback	Finance
		revenue - debt		financings	Obligations			revenue - debt		financings	Obligations
Remainder of 2021	$	23,525	$	4,212	$	27,737	$	12,788	$	1,680	$	14,468
2022		46,165		4,975		51,140		50,632		4,975		55,607
2023		46,165		3,148		49,313		50,632		3,148		53,780
2024		46,165		16,154		62,319		50,632		16,154		66,786
2025 and thereafter		72,708		—		72,708		86,614		—		86,614
Total future minimum payments		234,728		28,489		263,217		251,298		25,957		277,255
Less imputed interest		(58,461)		(8,951)		(67,412)		(60,760)		(8,658)		(69,418)
Total	$	176,267	$	19,538	$	195,805	$	190,538	$	17,299	$	207,837

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Other information related to the above finance obligations are presented in the following table:


		Six months ended		Six months ended		Nine months ended		Nine months ended
		June 30, 2021		June 30, 2020		September 30, 2021		September 30, 2020
Cash payments (in thousands)	$	26,508	$	20,148	$	41,325	$	31,693
Weighted average remaining term (years)		4.9		4.3		4.88		4.74
Weighted average discount rate		11.3%		11.2%		11.3%		11.3%

Restricted Cash

Fair Value

These levels are:

●

Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities.

●

Level 3 — unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability at fair value.

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Assets and liabilities measured at fair value on a recurring basis are summarized below (in thousands):

As of June 30, 2021

Carrying

Fair

Fair Value Measurements

Amount

Value

Level 1

Level 2

Level 3
Assets

Cash equivalents (1)
$
141,313
$
141,313
$
87,573
$
53,740
$
—
Corporate bonds

705,084

705,084

—

705,084

—
Commercial paper

329,722

329,722

—

329,722

—
U.S. Treasuries

170,477

170,477

170,477

—

—
Municipal debt

9,984

9,984

—

9,984

—

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							As of September 30, 2021
							Carrying		Fair		Fair Value Measurements
							Amount		Value		Level 1		Level 2		Level 3
Assets
Cash equivalents (1)						$	610,651	$	610,651	$	140,574	$	470,077	$	—
Corporate bonds							530,089		530,089		—		530,089		—
Commercial paper							35,795		35,795		—		35,795		—
U.S. Treasuries							169,878		169,878		169,878		—		—
Certificates of deposit	27,454	27,454	—	27,454	—		17,004		17,004		—		17,004		—
Equity securities	120,302	120,302	120,302	—	—		147,649		147,649		147,649		—		—

Liabilities
Contingent consideration	9,990	9,990	—	—	9,990		18,520		18,520		—		—		18,520
Convertible senior notes	192,011	1,320,194	—	1,320,194	—		192,320		1,006,639		—		1,006,639		—
Long-term debt	160,484	160,484	—	—	160,484		147,255		147,255		—		—		147,255
Finance obligations	195,805	195,805	—	—	195,805		207,837		207,837		—		—		207,837


	As of December 31, 2020						As of December 31, 2020
	Carrying	Fair	Fair Value Measurements				Carrying		Fair		Fair Value Measurements
	Amount	Value	Level 1	Level 2	Level 3		Amount		Value		Level 1		Level 2		Level 3
Liabilities
Contingent consideration	9,760	9,760	—	—	9,760		9,760		9,760		—		—		9,760
Convertible senior notes	85,640	1,272,766	—	1,272,766	—		85,640		1,272,766		—		1,272,766		—
Long-term debt	175,402	175,402	—	—	175,402		175,402		175,402		—		—		175,402
Finance obligations	181,553	181,553	—	—	181,553		181,553		181,553		—		—		181,553

(1)

Included in “Cash and cash equivalents” in our consolidated balance sheets as of ~~June~~September 30, 2021.

Available-for-sale securities

The amortized cost, gross unrealized gains and losses, fair value of those investments classified as available-for-sale securities, and allowance for credit losses at ~~June~~September 30, 2021 are summarized as follows (in thousands):


	Amortized		Gross		Gross		Fair		Allowance for		Amortized		Gross		Gross		Fair		Allowance for
	Cost		Unrealized Gains		Unrealized Losses		Value		Credit Losses		Cost		Unrealized Gains		Unrealized Losses		Value		Credit Losses
Corporate bonds	$	707,022	$	51	$	(1,989)	$	705,084		—	$	533,691	$	93	$	(3,695)	$	530,089		—
Commercial paper		329,471		253		(2)		329,722		—		35,719		76		—		35,795		—
Certificates of deposit		27,460		—		(6)		27,454		—		17,017		—		(13)		17,004		—
U.S. Treasuries		170,672		—		(195)		170,477		—		170,414		1		(537)		169,878		—
Municipal debt		9,993		—		(9)		9,984		—
Total	$	1,244,618	$	304	$	(2,201)	$	1,242,721	$	—	$	756,841	$	170	$	(4,245)	$	752,766	$	—

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A summary of the amortized cost and fair value of investments classified as available-for-sale, by contractual maturity, at ~~June~~September 30, 2021 is as follows (in thousands):


	June 30, 2021				September 30, 2021
		Amortized	Fair			Amortized	Fair
Maturity:		Cost	Value			Cost	Value
Within one year	$	717,531	$	717,285	$	447,479	$	446,011
After one through five years		527,087		525,436		309,362		306,755
Total	$	1,244,618	$	1,242,721	$	756,841	$	752,766

The cost, gross unrealized gains, gross unrealized losses, and fair value of those investments classified as equity securities at ~~June~~September 30, 2021 are summarized as follows (in thousands):


~~June 30, 2021~~
		~~Gross~~	~~Gross~~	~~Fair~~
	~~Cost~~	~~Unrealized Gains~~	~~Unrealized Losses~~	~~Value~~


	September 30, 2021
			Gross		Gross		Fair
		Cost	Unrealized Gains		Unrealized Losses		Value
Fixed income mutual funds	$	77,766	$	—	$	(132)	$	77,634
Exchange traded mutual funds		70,167		—		(152)		70,015
Total	$	147,933	$	—	$	(284)	$	147,649

~~Table~~Extended Maintenance Contracts

On a quarterly basis, we evaluate any potential losses related to our extended maintenance contracts for fuel cell systems and related infrastructure that has been sold. We measure loss accruals at the customer contract level. The expected revenues and expenses for these contracts include all applicable expected costs of ~~Contents~~providing services over the remaining term of the contracts and the related unearned net revenue. A loss is recognized if the sum of expected costs of providing services under the remaining term of the contract exceeds related unearned net revenue and is recorded as a provision for loss contracts related to service in the consolidated statements of operations. A key component of these estimates is the expected future service costs. In estimating the expected future costs, the Company considers its current service cost level and applies significant judgment related to expected cost saving initiatives. The expected future cost savings will be primarily dependent upon the success of the Company’s initiatives related to increasing stack life, achieving better economies of scale for service labor, and improvements in design and operations of infrastructure. If the expected cost saving initiatives are not realized, this will increase the estimated costs of providing services and will adversely affect our estimated contract loss accrual. Further, we continue to work to improve quality and reliability; however, unanticipated additional quality issues or warranty claims may arise and additional material charges may be incurred in the future. These quality issues could also adversely affect our contract loss accrual. Service costs during 2021 have been higher than previously estimated. The Company has undertaken or will soon undertake several initiatives to extend the life and improve the reliability of its equipment. As a result of these initiatives and our additional expectation that the increase in certain costs attributable to the global pandemic will abate, the Company believes that its contract loss accrual is sufficient. However, if elevated service costs persist, the Company will adjust its estimated future service costs and increase its contract loss accrual estimate.

Fixed income mutual funds
$
89,962

$
17

$
(81)

$
89,898
Exchange traded mutual funds

30,016

388

—

30,404
Total
$
119,978

$
405

$
(81)

$
120,302

Off-Balance Sheet Arrangements

The Company does not have off-balance sheet arrangements that are likely to have a current or future significant effect on the Company’s financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources that is material to investors.

Critical Accounting Estimates

Management’s discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of these consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets,

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liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of and during the reporting period. On an on-going basis, we evaluate our estimates and judgments, including those related to revenue recognition, bad debts, inventories, intangible assets, impairment of long-lived assets and PPA executory contract consideration, accrual for loss on extended maintenance contracts, operating and finance leases, product warranty ~~reserves,~~accruals, unbilled revenue, common stock warrants, income taxes, stock-based compensation, and contingencies. We base our estimates and judgments on historical experience and on various other factors and assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about (1) the carrying values of assets and liabilities and (2) the amount of revenue and expenses realized that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

There have been no changes in our critical accounting estimates from those reported in our 2020 ~~10-K.~~10-K, other than the addition of stock-based compensation.

Stock-based compensation

Stock-based compensation represents the cost related to stock-based awards granted to employees and directors. In September 2021, the Company issued performance stock option awards that include a market condition for certain executives. The Company uses the Monte Carlo simulation model to determine the fair value of performance stock option awards that include a market condition. In estimating fair value, management is required to make certain assumptions and estimates such as the expected term, volatility of the Company’s future share price, risk-free rate, and future dividend yield. Changes in assumptions used to estimate fair value could result in materially different results.

Recent Accounting Pronouncements

Recently Adopted Accounting Guidance

On January 1, 2021, we early adopted ASU No. 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) using the modified retrospective approach. Consequently, the Company’s 3.75% Convertible Senior Notes is now accounted for as a single liability measured at its amortized cost. This accounting change removed the impact of recognizing the equity component of the Company’s convertible notes at issuance and the subsequent accounting impact of additional interest expense from debt discount amortization. Future interest expense of the convertible notes will be lower as a result of adoption of this guidance and net loss per share will be computed using the if-converted method for convertible instruments. The cumulative effect of the accounting change upon adoption on January 1, 2021 increased the carrying amount of the 3.75% Convertible Senior Notes by $120.6 million, reduced accumulated deficit by $9.6 million and reduced additional paid-in capital by $130.2 ~~million.~~million as of September 30, 2021.

Recent Accounting Guidance Not Yet Effective

Item 3 — Quantitative and Qualitative Disclosures about Market Risk

There has been no material change from the information provided in the 2020 10-K “Item 7A: Quantitative and Qualitative Disclosures About Market Risk,” other than those described below.

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During the first ~~six~~nine months of 2021, the Company purchased U.S. Treasury securities, corporate bonds, commercial paper, certificates of deposit and money market funds, ~~and municipal debt,~~ in which the major components of market risk affecting us are credit risk and interest rate risk. We also purchased equity securities, in which the major component of market risk affecting us is equity risk.

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Our exposure to changes in foreign currency rates is primarily related to sourcing inventory from foreign locations and operations of HyPulsion, S.A.S., our French subsidiary that develops and sells hydrogen fuel cell systems for the European material handling market. ~~This practice~~In addition, we also have an investment in HyVia, a joint venture with Renault that plans to manufacture and sell FCE-LCVs and to supply hydrogen fuel and fueling stations to support the FCE-LCV market primarily in Europe. Our exposure to foreign currency can give rise to foreign exchange risk resulting from ~~the varying cost of inventory to the receiving location.~~our equity method investment with HyVia, which operates in Europe. The Company reviews the level of foreign content as part of its ongoing evaluation of overall sourcing strategies and considers the exposure to be not significant. Our HyPulsion exposure presently is mitigated by low levels of operations and its sourcing is primarily intercompany in nature and denominated in U.S. dollars. Our HyVia exposure presently is immaterial as we have not yet commenced commercial activities.

Item 4 — Controls and Procedures

(a) Disclosure controls and procedures.

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our reports that we file or submit under the Exchange Act, is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer (our principal executive officer) and Chief Financial Officer (our principal financial officer) as appropriate, to allow for timely decisions regarding required disclosure.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), as of the end of the period covered by this report. Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were not effective in 2018, 2019 and 2020 because of the material weakness in internal control over financial reporting described in Part II, Item 9A “Controls and Procedures” of our 2020 10-K. The material weakness has not been remediated as of ~~June~~September 30, 2021.

Material Weakness ~~identified as of December 31, 2020~~

Management identified that the following deficiency existed in internal control over financial reporting ~~as of December 31,~~in 2018, 2019 and 2020: the Company did not maintain a sufficient complement of trained, knowledgeable resources to execute its responsibilities with respect to internal control over financial reporting for certain financial statement accounts and

disclosures. As a consequence, the Company did not conduct an effective risk assessment process that was responsive to changes in the Company's operating environment and did not design and implement effective process-level controls activities in the following areas:

(a)

Presentation of operating expenses;

(b)

Accounting for lease-related transactions;

(c)

Identification and evaluation of impairment, accrual for loss contracts, certain expense accruals, and deemed dividends; and

(d)

Timely identification of adjustments to physical inventory in interim periods.

As reported on our 2020 10-K, we continue to take steps to remediate this material weakness and will continue to take further steps until such remediation is complete. These steps include the following:

Hiring additional resources, including third-party resources, with the appropriate technical accounting expertise, and strengthening internal training, to assist us in identifying and addressing any complex technical accounting issues that affect our consolidated financial statements.

We will design and implement a comprehensive and continuous risk assessment process to identify and assess risks of material misstatements and ensure that the impacted financial reporting processes and related internal controls are properly designed, maintained, and documented to respond to those risks in our financial reporting.

5560

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We will implement more structured analysis and review procedures and documentation for the application of GAAP, complex accounting matters, and key accounting policies.

We will augment our current estimation policies and procedures to be more robust and in-line with overall market dynamics including an evaluation of our operating environment in order to ensure operating effectiveness of certain process-level control activities.

We also intend to deploy new tools and tracking mechanisms to help enhance and maintain the appropriate documentation surrounding our classification of operating expenses.

We will report regularly to the Company’s Audit Committee on the progress and results of the remediation plan, including the identification, status, and resolution of internal control deficiencies.

As we work to improve our internal control over financial reporting, we may modify our remediation plan and may implement additional measures as we continue to review, optimize and enhance our financial reporting controls and procedures in the ordinary course. The material weakness will not be considered remediated until the remediated controls have been operating for a sufficient period of time and can be evidenced through testing that they are operating effectively.

(b) Changes in internal control over financial reporting.

Exclusive of the steps taken in remediation activities, there were no changes in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) occurred during the quarter ended ~~June~~September 30, 2021 that has materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1 — Legal Proceedings

On August 28, 2018, a lawsuit was filed on behalf of multiple individuals against the Company and five corporate co-defendants in the 9th Judicial District Court, Rapides Parish, Louisiana. The lawsuit relates to the previously disclosed May 2018 accident involving a forklift powered by the Company’s fuel cell at a Procter & Gamble facility in Louisiana. The lawsuit alleges claims against the Company and co-defendants, including Structural Composites Industries, Deep South Equipment Co., Air Products and Chemicals, Inc., and Hyster-Yale Group, Inc. for claims under the Louisiana Product Liability Act (“LPLA”) including defect in construction and/or composition, design defect, inadequate warning, breach of express warranty and negligence for wrongful death and personal injuries, among other damages. Procter & Gamble has intervened in that suit to recover worker’s compensation benefits paid to or for the employees/dependents. Procter & Gamble has also filed suit for property damage, business interruption, loss of revenue, expenses, and other damages. Procter & Gamble alleges theories under the LPLA, breach of warranty and quasi-contractual claims under Louisiana law. Defendants include the Company and several of the same co-defendants from the August 2018 lawsuit, including Structural Composites Industries, Deep South Equipment Co., and Hyster-Yale Group, Inc.

In March and May 2021, Company stockholders, individually and on behalf of all persons who purchased or otherwise acquired Plug securities between November 9, 2020 and March 16, 2021 (the “Class”), filed complaints in the U.S. District Court for the Southern District of New York and U.S. District Court for the Central District of California against the Company, Plug Chief Executive Officer Andrew Marsh, and Plug Chief Financial Officer Paul Middleton (together, the “Defendants”), captioned Dawn Beverly et al. v. Plug Power Inc. et al., Case No. 1:21-cv-02004 (S.D.N.Y.), Smolíček v. Plug Power Inc. et al., Case No. 2:21-cv-02402 (C.D. Cal.) and Tank v. Plug Power Inc. et al., Case No. 1:21-cv-03985 (S.D.N.Y.). The complaints include two claims, for (1) violation of Section 10(b) of the Exchange Act and Rule 10b5 promulgated thereunder (against all Defendants); and (2) violation of Section 20(a) of the Exchange Act (against Mr. Marsh and Mr. Middleton). The complaints allege that Defendants failed to disclose that the Company (i) “would be unable to timely file its 2020 annual report due to delays related to the review of classification of certain costs and the recoverability of the right to use assets with certain leases”; and (ii) “was reasonably likely to report material weaknesses

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in its internal control over financial reporting[.]” The complaints allege that, a result, “positive statements about the Company’s business, operations, and prospects were materially misleading and/or lacked a reasonable basis,” causing Class members losses and damages. The complaints seek compensatory damages “in an amount to be proven at trial, including interest thereon”; “reasonable costs and expenses incurred in th[e] action”; and “[s]uch other and further relief as the [c]ourt may deem just and proper.” On July 22, 2021, the U.S. District Court for the Southern District of New York consolidated the three cases and appointed a lead plaintiff. On July 28, 2021, Tank v. Plug Power, et. al., was voluntarily dismissed. An amended complaint was filed in the consolidated action on October 6, 2021.

On March 31, 2021, Company stockholder Junwei Liu, derivatively and on behalf of nominal defendant Plug, filed a complaint in the U.S. District Court for the Southern District of New York against certain Company directors and officers (the “Derivative Defendants”), captioned Liu v. Marsh et al., Case No. 1:21-cv-02753 (S.D.N.Y.) (the “Liu Derivative Complaint”). The Liu Derivative Complaint alleges that, between November 9, 2020 and March 1, 2021, the Derivative Defendants “made, or caused the Company to make, materially false and misleading statements concerning Plug Power’s business, operations, and prospects” by “issu[ing] positive financial information and optimistic guidance, and made assurances that the Company’s internal controls were effective,” when, “[i]n reality, the Company’s internal controls suffered from material deficiencies that rendered them ineffective.” The Liu Derivative Complaint asserts claims for (1) breach of fiduciary duties, (2) unjust enrichment, (3) abuse of control, (4) gross mismanagement, (5) waste of corporate assets, and (6) contribution under Sections 10(b) and 21D of the Exchange Act (as to the named officer defendants). The Liu Derivative Complaint seeks a judgment “[d]eclaring that Plaintiff may maintain this action on behalf of Plug”; “[d]eclaring that the [Derivative] Defendants have breached and/or aided and abetted the breach of their fiduciary duties”; “awarding to Plug Power the damages sustained by it as a result of the violations” set forth in the Liu Derivative Complaint, “together with pre-judgment and post-judgment interest thereon”; “[d]irecting Plug Power and the [Derivative] Defendants to take all necessary actions to reform and improve Plug Power’s corporate governance and internal procedures to comply with applicable laws”; and “[a]warding Plaintiff the costs and disbursements of this action, including reasonable attorneys’ and experts’ fees, costs, and expenses”; and “[s]uch other and further relief as the [c]ourt may deem just and proper.”

On April 5, 2021, Company stockholders Elias Levy and Camerohn X. Withers, derivatively and on behalf of nominal defendant Plug, filed a complaint in the U.S. District Court for the Southern District of New York against the Derivative Defendants named in the Liu Derivative Complaint, captioned Levy et al. v. McNamee et al., Case No. 1:21-cv-02891 (S.D.N.Y.) (the “Levy Derivative Complaint”). The Levy Derivative Complaint alleges that, from November 9, 2020 to April 5, 2021, the Derivative Defendants “breached their duties of loyalty and good faith” by failing to disclose “(1) that the Company would be unable to timely file its 2020 annual report due to delays related to the review of classification of certain costs and the recoverability of the right to use assets with certain leases; (2) that the Company was reasonably likely to report material weaknesses in its internal control over financial reporting; and (3) that, as a result of the foregoing, Defendants’ positive statements about the Company’s business, operations, and prospects were materially misleading and/or lacked a reasonable basis.” The Levy Derivative Complaint asserts claims for (1) breach of fiduciary duty (as to the named director defendants), (2) unjust enrichment (as to certain named director defendants), (3) waste of corporate assets (as to the named director defendants), and (4) violations of Sections 10(b) and 21D of the Exchange Act (as to the named officer defendants). The Levy Derivative Complaint seeks a judgment “declaring that Plaintiffs may maintain this action on behalf of the Company”; finding the Derivative Defendants “liable for breaching their fiduciary duties owed to the Company”; directing the Derivative Defendants “to take all necessary actions to reform and improve the Company’s corporate governance, risk management, and internal operating procedures to comply with applicable laws”; “awarding damages to the Company for the harm the Company suffered as a result of Defendants’ wrongful conduct”; “awarding damages to the Company for [the named officer Derivative Defendants’] violations of Sections 10(b) and 21D of the Exchange Act”; “awarding Plaintiffs the costs and disbursements of this action, including attorneys’, accountants’, and experts’ fees”; and “awarding such other and further relief as is just and equitable.” On April 27, 2021, the U.S. District Court for the Southern District of New York consolidated the Liu Derivative Complaint and the Levy Derivative Complaint under Case No. 1:21-cv-02753-ER (the “Consolidated Action”).

On May 13, 2021, Company stockholder Romario St. Clair, derivatively and on behalf of nominal defendant Plug, filed a complaint in the Supreme Court of the State of New York, County of New York against the Derivative Defendants named in the Liu Derivative Complaint, captioned St. Clair v. Plug Power Inc. et al., Index No. 653167/2021 (N.Y. Sup. Ct., N.Y. Cty.) (the “St. Clair Derivative Complaint”). The St. Clair Derivative Complaint alleges that, for

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approximately two years beginning on March 13, 2019, the Company “failed to disclose and misrepresented the following material, adverse facts, which the [Derivative] Defendants knew, consciously disregarded, or were reckless in not knowing,” including: “(a) that the Company was experiencing known but undisclosed material weaknesses in its internal controls over financial reporting; (b) the Company was overstating the carrying amount of certain right of use assets and finance obligations associated with leases; (c) the Company was understating its loss accrual on certain service contracts; (d) the Company would need to take impairment charges relating to certain long-lived assets; (e) the Company was improperly classifying research [and] development costs versus costs of goods sold; and (f) the Company would be unable to file its Annual Report for the 2020 fiscal year due to these errors.” The St. Clair Derivative Complaint asserts claims for (1) breach of fiduciary and (2) unjust enrichment. The St. Clair Derivative Complaint seeks a judgment “for the amount of damages sustained by the Company” as a result of the Derivative Defendants’ breaches of fiduciary duties and unjust enrichment; “[d]irecting Plug Power to take all necessary actions to reform and improve its corporate governance and internal procedures to comply with applicable laws”; for “equitable and/or injunctive relief as permitted by law, equity, and state statutory provisions”; “awarding to Plug Power restitution” and “ordering disgorgement of all profits, benefits, and other compensation obtained” by the Derivative Defendants; “awarding to plaintiff the costs and disbursements of the action, including reasonable attorneys’ fees, accountants’ and experts’ fees, costs, and expenses”; and “granting such other and further relief as the [c]ourt deems just and proper.”

Item 1A – Risk Factors

The risk factors discussed under the heading “Risk Factors” and elsewhere in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 continue to apply to our business.

Item 2 - Unregistered Sales of Equity Securities and Use of Proceeds

(a) Not applicable.

(b) Not applicable.

Item 3 — Defaults Upon Senior Securities

None.

Item 4 — Mine Safety Disclosures

None.

Item 5 — Other Information

None.

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Item 6 — Exhibits


3.1	Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2008 and incorporated by reference herein)..
3.2	Certificate of Amendment to Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.3 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2008 and incorporated by reference herein).
3.3	Second Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on May 19, 2011 and incorporated by reference herein).
3.4	Third Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on July 25, 2014 and incorporated by reference herein).
3.5	Certificate of Correction to Third Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.9 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2016 and incorporated by reference herein).
3.6	Fourth Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc. (filed as Exhibit 3.1 to Plug Power Inc.’s Current Report on Form 8-K filed on June 30, 2017 and incorporated by reference herein).
3.7	Fifth Certificate of Amendment of Amended and Restated Certificate of Incorporation of Plug Power Inc.~~(1)~~ (filed as Exhibit 3.7 to Plug Power Inc.’s Quarterly Report on Form 10-Q filed on August 5, 2021 and incorporated by reference herein).
3.8	Certificate of Designations, Preferences and Rights of a Series of Preferred Stock of Plug Power Inc. classifying and designating the Series A Junior Participating Cumulative Preferred Stock. (filed as Exhibit 3.1 to Plug Power Inc.’s Registration Statement on Form 8-A filed on June 24, 2009 and incorporated by reference herein).
3.9	Fourth Amended and Restated By-laws of Plug Power Inc. (filed as Exhibit 3.9 to Plug Power Inc.’s Annual Report on Form 10-K for the year ended December 31, 2020 and incorporated by reference herein).
10.1 (1)	Eleventh Amendment and Waiver to the Loan and Security Agreement, dated September 30, 2021, by and among Plug Power Inc., Emerging Power Inc., Emergent Power Inc., the other borrowers from time to time party thereto, and Generate PPL SPV I, LLC, as assignee of Generate Lending, LLC.
31.1 (1)	Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2 (1)	Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1 (1)	Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2 (1)	Certification pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	Inline XBRL Instance Document (1)
101.SCH*	XBRL Taxonomy Extension Schema Document (1)
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase Document (1)
101.DEF*	XBRL Taxonomy Extension Definition Linkbase Document (1)
101.LAB*	XBRL Taxonomy Extension Labels Linkbase Document (1)
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase Document (1)
104	Cover Page Interactive Data File (embedded within the Inline XBRL document) (1)

(1)	Filed herewith.

*	Submitted electronically herewith.

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Signatures

Pursuant to requirements 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.


	PLUG POWER INC.

Date: ~~August 5,~~November 9, 2021	By:	/s/ Andrew Marsh
		Andrew Marsh
		President, Chief Executive Officer and Director (Principal Executive Officer)

Date: ~~August 5,~~November 9, 2021	By:	/s/ Paul B. Middleton
		Paul B. Middleton
		Chief Financial Officer (Principal Financial Officer)

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Software, machinery and equipment		133,349		94,449
Property, plant, and equipment		135,915		96,735
Less: accumulated depreciation		(25,440)		(22,186)
Property, plant, and equipment, net	$	110,475	$	74,549

Sale of hydrogen installations and other infrastructure		40,109		6,961		60,462		12,789
Services performed on fuel cell systems and related infrastructure		5,675		6,236		11,720		12,757
Power Purchase Agreements		8,361		6,579		16,187		13,000
Fuel delivered to customers		11,121		7,372		22,248		14,705
Other		122		62		310		138
Net revenue	$	124,557	$	67,995	$	196,515	$	108,814