Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue:
Total revenue	$ 119	$ 118	$ 394	$ 370
Cost of revenue:
Project expense	41	36	121	105
Transmission costs	5	6	17	21
Depreciation, amortization and accretion	76	56	236	166
Total cost of revenue	122	98	374	292
Gross profit (loss)	(3)	20	20	78
Operating expenses:
General and administrative	12	9	34	29
Development expenses	13	0	13	0
Related party general and administrative	4	4	12	12
Impairment expense	0	3	0	7
Total operating expenses	29	16	59	48
Operating income (loss)	(32)	4	(39)	30
Other income (expense):
Interest expense	(27)	(28)	(78)	(81)
Gain on derivatives	3	2	3	16
Earnings (loss) in unconsolidated investments, net	(10)	(4)	(16)	13
Net gain (loss) on transactions	(3)	1	(5)	(2)
Other expense, net	(1)	(3)	(3)	(8)
Total other expense	(38)	(32)	(99)	(62)
Net loss before income tax	(70)	(28)	(138)	(32)
Income tax provision	1	3	9	14
Net loss	(71)	(31)	(147)	(46)
Net loss attributable to noncontrolling interest	(20)	(18)	(59)	(202)
Net income (loss) attributable to Pattern Energy	$ (51)	$ (13)	$ (88)	$ 156
Weighted-average number of common shares outstanding
Basic (in shares)	97,600,393	97,460,492	97,595,765	97,464,012
Diluted (in shares)	97,600,393	97,460,492	97,595,765	105,788,848
Net income (loss) per share attributable to Pattern Energy
Basic (in dollars per share)	$ (0.53)	$ (0.13)	$ (0.91)	$ 1.60
Diluted (in dollars per share)	$ (0.53)	$ (0.13)	$ (0.91)	$ 1.58
Electricity sales
Revenue:
Total revenue	$ 115	$ 116	$ 373	$ 354
Other revenue
Revenue:
Total revenue	$ 4	$ 2	$ 21	$ 16