19. Unaudited Quarterly Financial Data (in thousands, except per share data)


	Quarters ended
	March 31,		June 30,		September 30,		December 31,
	2019		2019		2019		2019
Net revenue (1):
Sales of fuel cell systems and related infrastructure	$	2,544	$	38,696	$	38,877	$	69,767
Services performed on fuel cell systems and related infrastructure		6,343		5,341		6,205		7,328
Power Purchase Agreements		6,110		6,409		6,595		6,739
Fuel delivered to customers		6,582		7,089		7,649		7,779
Other		-		-		135		51
Net revenue		21,579		57,535		59,461		91,664
Gross (loss) profit		(3,784)		10,619		8,349		12,782
Operating expenses		16,697		22,560		18,428		20,323
Operating loss		(20,481)		(11,941)		(10,079)		(7,541)
Net loss attributable to common stockholders		(31,004)		(18,070)		(18,155)		(18,288)
Loss per share:
Basic and Diluted	$	(0.14)	$	(0.07)	$	(0.08)	$	(0.07)


	Quarters ended
	March 31,		June 30,		September 30,		December 31,
	2018		2018		2018		2018
Net revenue (1):
Sales of fuel cell systems and related infrastructure	$	10,613	$	18,820	$	36,668	$	41,191
Services performed on fuel cell systems and related infrastructure		5,483		5,691		5,156		5,672
Power Purchase Agreements		5,372		5,438		5,555		6,504
Fuel delivered to customers		4,950		5,280		5,786		6,453
Net revenue		26,418		35,229		53,165		59,820
Gross loss		(3,984)		(2,310)		4,409		4,507
Operating expenses		16,957		20,668		17,054		17,426
Operating loss		(20,941)		(22,978)		(12,645)		(12,919)
Net loss attributable to common stockholders		(19,848)		(25,881)		(15,578)		(16,860)
Loss per share:
Basic and Diluted	$	(0.09)	$	(0.12)	$	(0.07)	$	(0.08)

(1)

The Company early-adopted Accounting Standards Update 2019-08, Compensation – Stock Compensation (Topic 718) and Revenue from Contracts with Customers (Topic 606) (ASU 2019-08), as of January 1, 2019 resulting in changes to previously reported 2019 interim financial information. See Note 2, Summary of Significant Accounting Policies, for details. Amounts related to 2018 were not impacted by the adoption of ASU 2019-08.