TerraForm Power NY (TERP) 10-Q 6 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 31, 2015
Document Information [Line Items]
Entity Registrant Name	TerraForm Power, Inc.
Entity Central Index Key	1,599,947
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		79,904,190
Class B common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		60,364,154
Class B1 common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Operating revenues, net	$ 130,046	$ 22,378	$ 200,561	$ 30,770
Operating costs and expenses:
Cost of operations	18,409	1,408	35,229	1,890
Cost of operations - affiliate	4,174	825	7,817	1,217
General and administrative	4,521	358	13,569	456
General and administrative - affiliate	17,857	2,142	24,775	3,732
Acquisition and related costs	6,664	1,235	20,386	1,235
Acquisition and related costs - affiliate	604	0	1,040	0
Formation and offering related fees and expenses	0	2,863	0	2,863
Depreciation, accretion and amortization	38,136	4,953	70,027	8,387
Total operating costs and expenses	90,365	13,784	172,843	19,780
Operating income	39,681	8,594	27,718	10,990
Other expenses:
Interest expense, net	35,961	24,621	72,816	32,148
(Gain) loss on extinguishment of debt, net	(11,386)	1,945	8,652	1,945
(Gain) loss on foreign currency exchange, net	(14,439)	79	(70)	674
Other, net	(803)	0	(323)	0
Total other expenses, net	9,333	26,645	81,075	34,767
Income (loss) before income tax expense (benefit)	30,348	(18,051)	(53,357)	(23,777)
Income tax expense (benefit)	1,214	(5,318)	1,169	(6,875)
Net income (loss)	29,134	(12,733)	(54,526)	(16,902)
Less: Predecessor loss prior to initial public offering on July 23, 2014	0	(13,204)	0	(17,012)
Less: Net income attributable to redeemable non-controlling interests	1,796	0	1,627	0
Less: Net income (loss) attributable to non-controlling interests	9,903	471	(45,472)	110
Net loss attributable to TerraForm Power, Inc. Class A common stockholders	$ 17,435	$ 0	$ (10,681)	$ 0
Weighted average Class A common stock - Basic and Diluted (shares)	57,961		53,874
Net earnings (loss) per weighted average Class A common share - basic and diluted ($ per share)	$ 0.10		$ (0.41)

Unaudited Consolidated Stateme3

Unaudited Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 29,134	$ (12,733)	$ (54,526)	$ (16,902)
Foreign currency translation adjustments:
Net unrealized gains arising during the period	3,852	573	577	573
Hedging activities:
Net unrealized gains (losses) arising during the period	428	0	(1,820)	0
Reclassification of net realized losses into earnings	350	0	3,207	0
Other comprehensive income, net of tax	4,630	573	1,964	573
Total comprehensive income (loss)	33,764	(12,160)	(52,562)	(16,329)
Less: Predecessor comprehensive loss prior to initial public offering on July 23, 2014	0	(12,631)	0	(16,439)
Less comprehensive income (loss) attributable to non-controlling interests:
Net income (loss) attributable to non-controlling interests	9,903	471	(45,472)	110
Foreign currency translation adjustments	2,177	0	315	0
Hedging activities	630	0	798	0
Comprehensive income (loss) attributable to non-controlling interests	12,710	471	(44,359)	110
Comprehensive income (loss) attributable to Class A stockholders	$ 21,054	$ 0	$ (8,203)	$ 0

Unaudited Consolidated Balance

Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 390,632	$ 468,554
Restricted cash, including consolidated variable interest entities of $25,943 and $39,898 in 2015 and 2014, respectively	74,416	70,545
Accounts receivable, including consolidated variable interest entities of $36,228 and $16,921 in 2015 and 2014, respectively	96,938	32,036
Prepaid expenses and other current assets	31,061	22,637
Total current assets	593,047	593,772
Property and equipment, net, including consolidated variable interest entities of $1,660,249 and $1,466,223 in 2015 and 2014, respectively	3,928,714	2,637,139
Intangible assets, net, including consolidated variable interest entities of $233,326 and $259,004 in 2015 and 2014, respectively	515,688	361,673
Deferred financing costs, net	52,985	42,741
Deferred income taxes	7	4,606
Other assets	82,728	29,419
Total assets	5,173,169	3,669,350
Current liabilities:
Current portion of long-term debt and financing lease obligations, including consolidated variable interest entities of $89,331 and $20,907 in 2015 and 2014, respectively	322,115	97,412
Accounts payable, accrued expenses and other current liabilities, including consolidated variable interest entities of $17,956 and $27,284 in 2015 and 2014, respectively	99,832	83,437
Deferred revenue, including consolidated variable interest entities of $17,441 and $12,941 in 2015 and 2014, respectively	13,014	24,264
Due to SunEdison and affiliates, net	28,062	186,435
Total current liabilities	463,023	391,548
Other liabilities:
Long-term debt and financing lease obligations, less current portion, including consolidated variable interest entities of $615,658 and $620,853 in 2015 and 2014, respectively	1,944,795	1,599,277
Deferred revenue, including consolidated variable interest entities of $63,231 and $51,943 in 2015 and 2014, respectively	76,814	52,214
Deferred income taxes	7,108	7,877
Asset retirement obligations, including consolidated variable interest entities of $46,621 and $32,181 in 2015 and 2014, respectively	145,877	78,175
Other long-term liabilities	5,098	0
Total liabilities	2,642,715	2,129,091
Redeemable non-controlling interests	38,228	24,338
Stockholders' equity:
Preferred stock, $0.01 par value, 50,000 shares authorized, none issued and outstanding in 2015 and 2014	0	0
Additional paid-in capital	1,274,450	497,556
Accumulated deficit	(36,298)	(25,617)
Accumulated other comprehensive loss	(786)	(1,637)
Total TerraForm Power, Inc. stockholders' equity	1,238,743	471,392
Non-controlling interests	1,253,483	1,044,529
Total non-controlling interests and stockholders' equity	2,492,226	1,515,921
Total liabilities, non-controlling interests and stockholders' equity	5,173,169	3,669,350
Class A Common Stock
Stockholders' equity:
Common Stock	773	387
Class B common stock
Stockholders' equity:
Common Stock	604	645
Class B1 common stock
Stockholders' equity:
Common Stock	$ 0	$ 58

Unaudited Consolidated Balance5

Unaudited Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Restricted cash	$ 74,416	$ 70,545
Accounts receivable	96,938	32,036
Assets, Noncurrent [Abstract]
Property and equipment, net	3,928,714	2,637,139
Intangible assets, net	515,688	361,673
Current liabilities:
Current portion of long-term debt	322,115	97,412
Accounts payable, accrued expenses and other current liabilities	99,832	83,437
Deferred revenue (short-term)	13,014	24,264
Liabilities, Noncurrent [Abstract]
Long-term debt and financing lease obligations, less current portion	1,944,795	1,599,277
Deferred revenue	76,814	52,214
Asset retirement obligations	$ 145,877	$ 78,175
Par value (in dollars per share)	$ 0.01	$ 0.01
Shares authorized (in shares)	50,000,000	50,000,000
Shares issued (in shares)	0	0
Shares outstanding (in shares)	0	0
Shares outstanding (in shares)	140,268,344
Consolidated variable interest entities
Current assets:
Restricted cash	$ 25,943	$ 39,898
Accounts receivable	36,228	16,921
Assets, Noncurrent [Abstract]
Property and equipment, net	1,660,249	1,466,223
Intangible assets, net	233,326	259,004
Current liabilities:
Current portion of long-term debt	89,331	20,907
Accounts payable, accrued expenses and other current liabilities	17,956	27,284
Deferred revenue (short-term)	17,441	12,941
Liabilities, Noncurrent [Abstract]
Long-term debt and financing lease obligations, less current portion	615,658	620,853
Deferred revenue	63,231	51,943
Asset retirement obligations	$ 46,621	$ 32,181
Class A Common Stock
Liabilities, Noncurrent [Abstract]
Par value (in dollars per share)	$ 0.01	$ 0.01
Shares authorized (in shares)	850,000,000	850,000,000
Shares issued (in shares)	79,904,000	42,218,000
Shares outstanding (in shares)	79,904,000	42,218,000
Class B common stock
Liabilities, Noncurrent [Abstract]
Par value (in dollars per share)	$ 0.01	$ 0.01
Shares authorized (in shares)	140,000,000	140,000,000
Shares issued (in shares)	60,364,000	64,526,000
Shares outstanding (in shares)	60,364,000	64,526,000
Class B1 common stock
Liabilities, Noncurrent [Abstract]
Par value (in dollars per share)	$ 0.01	$ 0.01
Shares authorized (in shares)	260,000,000	260,000,000
Shares issued (in shares)	0	5,840,000
Shares outstanding (in shares)	0	5,840,000

Unaudited Consolidated Stateme6

Unaudited Consolidated Statement of Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands		Total	Class A Common Stock	Class B common stock	Class B1 common stock	Total - Parent	Preferred Stock	Common StockClass A Common Stock	Common StockClass B common stock	Common StockClass B1 common stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total - Non-controlling Interests	Non-controlling Interests - Capital	Non-controlling Interests - Accumulated Deficit	Non-controlling Interests - Accumulated Other Comprehensive Income (Loss)
Preferred stock beginning balance at Dec. 31, 2014		0					0
Beginning balance at Dec. 31, 2014		$ 1,515,921				$ 471,392	$ 0	$ 387	$ 645	$ 58	$ 497,556	$ (25,617)	$ (1,637)	$ 1,044,529	$ 1,092,809	$ (44,451)	$ (3,829)
Beginning balance (in shares) at Dec. 31, 2014			42,218,000	64,526,000	5,840,000			42,218,000	64,526,000	5,840,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock related to the public offering, net of issuance costs		921,610				921,610		$ 318	$ (41)		921,333
Issuance of Class A common stock related to the public offering, net of issuance costs (shares)								31,912,000	(4,162,000)
Riverstone exchange (in shares)								5,840,000		(5,840,000)
Riverstone exchange								$ 58		$ (58)
Stock-based compensation (in shares)								(66,000)
Stock-based compensation		7,474				7,474		$ 10			7,464
Net income (loss)	[1]	(56,153)				(10,681)						(10,681)		(45,472)		(45,472)
Dividends		(33,910)				(33,910)					(33,910)
Consolidation of non-controlling interests in acquired projects		104,546												104,546	104,546
Repurchase of non-controlling interest		(54,694)												(54,694)	(54,694)
Contributions from SunEdison		99,384				45,053					45,053			54,331	54,331
Other Comprehensive Income		1,964				851							851	1,113			1,113
Sale of membership interests in projects		33,237												33,237	33,237
Distributions to non-controlling interests		(47,153)												(47,153)	(47,153)
Equity reallocation		$ 163,046				(163,046)					(163,046)			163,046	163,046
Preferred stock ending balance at Jun. 30, 2015		0					0
Ending balance at Jun. 30, 2015		$ 2,492,226				$ 1,238,743	$ 0	$ 773	$ 604	$ 0	$ 1,274,450	$ (36,298)	$ (786)	$ 1,253,483	$ 1,346,122	$ (89,923)	$ (2,716)
Ending balance (in shares) at Jun. 30, 2015		140,268,344	79,904,000	60,364,000	0			79,904,000	60,364,000	0
[1]	Excludes net loss attributable to redeemable non-controlling interests

Unaudited Consolidated Stateme7

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ (54,526)	$ (16,902)
Adjustments to reconcile net loss to net cash provided by operating activities:
Non-cash incentive revenue	(1,534)	(706)
Non-cash interest expense	931	299
Stock compensation expense	7,474	0
Depreciation, accretion and amortization	70,027	8,387
Amortization of intangible assets	5,023	771
Amortization of deferred financing costs and debt discounts	11,506	13,857
Recognition of deferred revenue	(972)	(125)
Loss on extinguishment of debt, net	8,652	1,945
Unrealized loss on derivatives	1,814	0
Unrealized loss (gain) on foreign currency exchange	355	(1,646)
Deferred taxes	1,112	(6,680)
Changes in assets and liabilities:
Accounts receivable	(54,889)	(14,174)
Prepaid expenses and other current assets	8,911	(9,526)
Accounts payable, accrued interest, and other current liabilities	11,273	14,335
Deferred revenue	14,323	22,349
Due to SunEdison and affiliates, net	(196)	76
Restricted cash from operating activities	520	0
Other, net	5,496	(24)
Net cash provided by operating activities	35,300	12,236
Cash flows from investing activities:
Cash paid to third parties for renewable energy facility construction	(351,252)	(524,105)
Other investments	(10,000)	0
Acquisitions of renewable energy facilities from third parties, net of cash acquired	(1,004,773)	(191,130)
Due to SunEdison and affiliates, net	(14,872)	3,313
Change in restricted cash	4,343	9,015
Net cash used in investing activities	(1,376,554)	(702,907)
Cash flows from financing activities:
Proceeds from issuance of Class A common stock	921,610	0
Change in restricted cash for principal debt service	0	335
Proceeds from Senior Notes due 2023	945,962	0
Repayment of term loan	(573,500)	0
Proceeds from Revolver	235,000	0
Repayment of Revolver	(235,000)	0
Borrowings of project-level long-term debt	276,529	551,610
Principal payments on project-level long-term debt	(133,955)	(42,923)
Due to SunEdison and affiliates, net	(138,113)	0
Contributions from non-controlling interests	44,792	1,930
Distributions to non-controlling interests	(16,885)	0
Repurchase of non-controlling interest	(54,694)	0
Distributions to SunEdison and affiliates	(31,555)	0
Net SunEdison investment	99,251	217,680
Payment of dividends	(33,910)	0
Debt prepayment premium	(6,412)	0
Payment of deferred financing costs	(35,392)	(23,089)
Net cash provided by financing activities	1,263,728	705,543
Net (decrease) increase in cash and cash equivalents	(77,526)	14,872
Effect of exchange rate changes on cash and cash equivalents	(396)	100
Cash and cash equivalents at beginning of period	468,554	1,044
Cash and cash equivalents at end of period	390,632	16,016
Supplemental Disclosures:
Cash paid for interest, net of amounts capitalized of $4,752 and $3,392, respectively	44,530	8,741
Schedule of non-cash activities:
Additions of asset retirement obligation (ARO) assets and liabilities	36,176	3,122
ARO assets and obligations from acquisitions	27,208	10,183
Long-term debt assumed in connection with acquisitions	$ 63,293	$ 109,072

Unaudited Consolidated Stateme8

Unaudited Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Cash Flows [Abstract]
Interest capitalized	$ 4,752	$ 3,392

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	BASIS OF PRESENTATION TerraForm Power, Inc. and subsidiaries (the "Company") is a subsidiary of SunEdison, Inc. ("SunEdison"). The accompanying unaudited consolidated financial statements have been prepared in accordance with the Securities and Exchange Commission’s, or SEC’s, regulations for interim financial information. Accordingly, they do not include all of the information and notes required by U.S. generally accepted accounting principles ("U.S. GAAP") for complete financial statements. The following notes should be read in conjunction with the accounting policies and other disclosures as set forth in the notes to the Company’s annual financial statements for the year ended December 31, 2014 . Interim results are not necessarily indicative of results for a full year. In the opinion of management, the accompanying unaudited consolidated financial statements contain all material adjustments consisting of normal and recurring accruals necessary to present fairly the Company's unaudited consolidated financial position as of June 30, 2015 , and the results of operations, comprehensive income and cash flows for the three and six months ended June 30, 2015 and 2014 .

Transactions Between Entities U

Transactions Between Entities Under Common Control	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Transactions Between Entities Under Common Control	TRANSACTIONS BETWEEN ENTITIES UNDER COMMON CONTROL When renewable energy facilities are acquired from SunEdison, the Company is required to recast its historical financial statements to reflect the assets and liabilities and the results of operations of the acquired renewable energy facilities for the period they were owned by SunEdison in accordance with rules applicable to transactions between entities under common control. During the six months ended June 30, 2015 , the Company acquired 68 renewable energy facilities with a combined nameplate capacity of 313.0 MW from SunEdison, which resulted in a recast of the balance sheet as of December 31, 2014 , and the related statement of cash flows for the year ended December 31, 2014 . One of these facilities was in operation in 2014 , which resulted in a recast of the statement of operations and statement of comprehensive income (loss) for the year ended December 31, 2014 . The following table presents the changes to previously reported amounts of the Company's consolidated balance sheet as of December 31, 2014 included in the Company's Current Report on Form 8-K dated May 7, 2015: (In thousands) December 31, 2014 as Previously Recasted Acquired Call Right and Operating Projects December 31, 2014 Recast Cash and cash equivalents $ 468,554 $ — $ 468,554 Accounts receivable 31,986 50 32,036 Prepaid expenses and other current assets 22,620 17 22,637 Property and equipment, net 2,554,904 82,235 2,637,139 Deferred financing costs, net 42,113 628 42,741 Change in total assets $ 82,930 Current portion of long-term debt $ 84,104 $ 13,308 $ 97,412 Accounts payable, accrued expenses and other current liabilities 82,605 832 83,437 Due to SunEdison and affiliates, net 153,052 33,383 186,435 Deferred revenue (short-term) 21,989 2,275 24,264 Long-term debt and financing lease obligations, less current portion 1,568,517 30,760 1,599,277 Asset retirement obligations 76,111 2,064 78,175 Deferred revenue (long-term) 52,081 133 52,214 Deferred income taxes 7,702 175 7,877 Change in total liabilities $ 82,930 The following table presents the changes to previously reported amounts of the Company's consolidated statement of cash flows for the six months ended June 30, 2014 included in the Company's previously filed Quarterly Report on Form 10-Q: (In thousands) As Reported Acquired Call Right and Operating Projects June 30, 2014 Recast Cash flows from operating activities: Depreciation, accretion and amortization $ 8,001 $ 386 $ 8,387 Deferred taxes (6,875 ) 195 (6,680 ) Changes in assets and liabilities: Accounts receivable (14,034 ) (140 ) (14,174 ) Prepaid expenses and other current assets (9,526 ) — (9,526 ) Accounts payable, accrued interest, and other current liabilities 13,266 1,069 14,335 Deferred revenue 22,349 — 22,349 Cash flows from investing activities: Cash paid to SunEdison and third parties for solar generation facility construction (485,756 ) (38,349 ) (524,105 ) Due to SunEdison and affiliates, net — 3,313 3,313 Cash flows from financing activities: Borrowings of project-level long-term debt 518,737 32,873 551,610 Principal payments on project-level long-term debt (42,923 ) — (42,923 ) Payment of deferred financing costs (22,421 ) (668 ) (23,089 ) Net increase in cash and cash equivalents 14,872 — 14,872 Effect of exchange rate changes on cash and cash equivalents 100 — 100 Cash and cash equivalents at end of period 16,016 — 16,016 The following table presents the changes to previously reported amounts of the Company's consolidated statement of operations for the six months ended June 30, 2014 included in the Company's previously filed Quarterly Report on Form 10-Q: (In thousands) As Reported Acquired Call Right and Operating Projects June 30, 2014 Recast Operating revenues, net $ 30,077 $ 693 $ 30,770 Cost of operations 1,846 44 1,890 Cost of operations - affiliate 1,137 80 1,217 Depreciation, accretion and amortization 8,001 386 8,387 Interest expense, net 31,253 895 32,148 Change in net loss $ (712 ) Acquisitions of Call Right and Operating Projects The assets and liabilities transferred to the Company for the acquisitions listed in the table below relate to interests under common control with SunEdison and, accordingly, were recorded at historical cost basis. The difference between the cash purchase price and historical cost basis of the net assets acquired was recorded as a distribution to SunEdison and reduced the balance of its non-controlling interest. The following table summarizes the Call Right and operating projects acquired by the Company from SunEdison during the six months ended June 30, 2015 , through a series of transactions: Nameplate Capacity (MW) Number of Sites As of June 30, 2015 (In thousands) Facility Size Type Location Initial Cash Paid Estimated Cash Due to SunEdison Debt Transferred Distributed Generation Solar U.S. 51.7 46 $ 76,371 $ 10,815 $ 4,460 Utility Solar U.S. 47.0 8 15,396 55,150 60,903 Utility Solar U.K. 214.3 14 141,783 9,924 218,201 Total 313.0 68 $ 233,550 $ 75,889 $ 283,564 Results of Operations During the six months ended June 30, 2015 , the Company paid $181.2 million to SunEdison and recorded a distribution to SunEdison of $14.6 million for facilities acquired from SunEdison that had achieved commercial operations as of June 30, 2015 . Additionally, during the six months ended June 30, 2015 , the Company paid $52.4 million to SunEdison for facilities acquired SunEdison that had not achieved commercial operations as of June 30, 2015 . The following table is a summary of the results of operations for the Call Right and operating projects acquired by the Company from SunEdison during the six months ended June 30, 2015 : (In thousands) Six Months Ended June 30, 2015 Operating revenues, net $ 14,324 Operating expenses 7,610 Operating income 6,714 Interest expense, net 3,496 Other income 10,315 Net income $ 13,533

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Use of Estimates In preparing the unaudited consolidated financial statements, the Company used estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements. Such estimates also affect the reported amounts of revenues, expenses and cash flows during the reporting period. Actual results may differ from estimates under different assumptions or conditions. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers , which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. This ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. This standard will become effective for us on January 1, 2018. Early application is permitted but not before January 1, 2017. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is currently evaluating the effect that ASU No. 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method or determined the effect of the standard on its ongoing financial reporting. In February 2015, the FASB issued ASU No. 2015-02 Consolidation (Topic 810) Amendments to the Consolidation Analysis , which affects the following areas of the consolidation analysis: limited partnerships and similar entities, evaluation of fees paid to a decision maker or service provider as a variable interest and in determination of the primary beneficiary, effect of related parties on the primary beneficiary determination and for certain investment funds. ASU No. 2015-02 is effective for us for our fiscal year ending December 31, 2016 and interim periods therein. The Company is evaluating the impact of this standard on our consolidated statements of financial position, results of operations and cash flows. In April 2015, the FASB issued ASU No. 2015-03 Interest - Imputation of Interest (Subtopic 835-30) Simplifying the Presentation of Debt Issuance Costs , which requires debt issuance costs related to a recognized debt liability to be presented on the balance sheet as a direct deduction from the debt liability. ASU No. 2015-03 is effective for us for our fiscal year ending December 31, 2016 and interim periods therein. The Company is evaluating the impact of this standard on our consolidated balance sheet. In April 2015, the FASB issued ASU No. 2015-06 Earnings Per Share , which provides guidance on the presentation of historical earnings per unit under the two-class method for transfers of net assets between entities under common control. ASU No. 2015-06 is effective for us for our fiscal year ending December 31, 2016 and interim periods therein. The Company is evaluating the impact of this standard on our consolidated financial statements. In July 2015, the FASB issued ASU No. 2015-11 Inventory , which requires inventory that is measured using the first-in, first-out method or average cost method to be measured at the lower of cost and net realizable value. ASU No. 2015-10 is effective for us for our fiscal year ending December 31, 2017 and interim periods therein. The Company is evaluating the impact of this standard on our SREC inventory.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Acquisitions	ACQUISITIONS 2015 Acquisitions Acquisition of First Wind On January 29, 2015 , the Company, through TerraForm Power LLC ("Terra LLC"), acquired from First Wind Holdings, LLC (together with its subsidiaries, “First Wind”) 521.1 MW of operating renewable power assets, including 500.0 MW of wind power plants and 21.1 MW of solar generation facilities (the “First Wind acquisition”). The operating renewable power assets the Company acquired are located in Maine, New York, Hawaii, Vermont and Massachusetts and are contracted under power purchase agreements ("PPAs") or renewable energy certificates ("RECs"). The purchase price for this acquisition was $810.4 million in cash, net of cash acquired. Acquisition of Northern Lights solar generation facilities On June 30, 2015 , the Company acquired two utility scale, ground mounted solar generation facilities from Invenergy Solar LLC ("Northern Lights"). The facilities are located in Ontario, Canada and have a total nameplate capacity of 25.7 MW. The facilities are contracted under long-term PPAs with an investment grade utility with a credit rating of Aa2, and the PPAs have a weighted average remaining life of 18 years. The cash purchase price, net of cash acquired, for this acquisition was CAD 125.4 million ( $101.1 million USD equivalent) in cash, including the repayment of project-level debt and breakage fees for the termination of interest rate swaps. Acquisition of other solar generation facilities During the six months ended June 30, 2015 , the Company acquired 66 solar generation facilities with a combined nameplate capacity of 37.6 MW for a purchase price of $90.9 million in cash, net of cash acquired, and $15.9 million of project-level debt assumed in a number of transactions with third parties. The facilities are located in Arizona, California, Connecticut Massachusetts, New Jersey and Pennsylvania as well as Ontario, Canada. The facilities are contracted under long-term PPAs with commercial and municipal customers and the PPAs have a weighted-average remaining life of approximately 15 years. Initial Accounting for the 2015 Acquisitions The initial accounting for the 2015 acquisitions has not been completed because the evaluation necessary to assess the fair values of certain net assets acquired is still in process. The provisional amounts for these acquisitions, included in the table within the " Acquisition Accounting " section of this footnote below, are subject to revision until these evaluations are completed. The estimated fair value of assets, liabilities, and non-controlling interest pertaining to First Wind reflect the following material changes from the previous period: a decrease to property, plant, and equipment of $18.9 million , a decrease to intangible assets of $10.5 million , a decrease to long-term debt of $12.4 million , and a decrease to non-controlling interest of $21.1 million . The operating revenues and net income of the facilities acquired in 2015 reflected in the accompanying unaudited consolidated statement of operations for the six months ended June 30, 2015 are $60.7 million and $20.1 million , respectively. 2014 Acquisitions During the year ended December 31, 2014 , the Company acquired Mt. Signal, Stonehenge Operating Projects, Capital Dynamics, Hudson Energy, and various other renewable energy facilities. The acquisition accounting for certain of these facilities was completed as of June 30, 2015, at which point the provisional fair values became final. The acquisition accounting for Mt. Signal and Stonehenge Operating Projects are complete as of June 30, 2015 . The final estimated fair value of assets, liabilities and non-controlling interests is included in the table within the " Acquisition Accounting " section of this footnote below and do not reflect any material changes from amounts previously reported. The acquisition accounting for various other 2014 acquisitions were finalized in previous periods. The initial accounting for the acquisitions of Capital Dynamics and Hudson Energy are not complete because the evaluation necessary to assess the fair values of certain net assets acquired is still in process. The provisional amounts for these acquisitions, included in the table within the " Acquisition Accounting " section of this footnote below, are subject to revision until these evaluations are completed. Unaudited Pro Forma Supplementary Data The unaudited pro forma supplementary data presented in the table below gives effect to the material 2015 acquisitions, First Wind and Northern Lights, as if those transactions had each occurred on January 1, 2014. The unaudited pro forma supplementary data is provided for informational purposes only and should not be construed to be indicative of the Company’s results of operations had the acquisitions been consummated on the date assumed or of the Company’s results of operations for any future date. Six Months Ended June 30, (In thousands) 2015 2014 Total operating revenues, net $ 217,276 $ 95,076 Net Loss 32,684 13,298 Acquisition costs, incurred by the Company related to third-party acquisitions, were $21.0 million and $1.2 million for the six months ended June 30, 2015 and 2014 , respectively. These costs are reflected as acquisition and related costs in the accompanying unaudited consolidated statements of operations. Acquisition Accounting The estimated fair values of assets, liabilities and non-controlling interests pertaining to business combinations as of June 30, 2015 , are as follows: 2015 Preliminary 2014 Preliminary 2014 Final (In thousands) First Wind Northern Lights Other Capital Dynamics Other Mt. Signal Other Accounts receivable $ 8,667 $ 1,284 $ 2,959 $ 2,603 $ 4,092 $ 11,687 $ 5,400 Property and equipment 784,178 75,218 80,939 219,981 42,001 649,570 211,796 Intangible assets 115,200 25,865 31,577 71,453 16,604 119,767 107,676 Deferred income taxes — — — 26,578 — — — Restricted cash 6,630 — 827 15 3,019 22,165 11,700 Other assets 68,330 24 331 3,990 121 12,621 4,495 Total assets acquired 983,005 102,391 116,633 324,620 65,837 815,810 341,067 Accounts payable, accrued expenses and other current liabilities 10,012 440 739 1,194 1,781 22,725 1,540 Long-term debt, including current portion 47,400 — 15,893 — 24,546 413,464 111,610 Deferred income taxes — — — 32,476 — — 927 Asset retirement obligations 15,418 818 5,332 13,073 3,269 4,656 14,105 Total liabilities assumed 72,830 1,258 21,964 46,743 29,596 440,845 128,182 Non-controlling interest 99,739 — 3,762 20,496 2,850 83,310 1,400 Purchase price, net of cash acquired $ 810,436 $ 101,133 $ 90,907 $ 257,381 $ 33,391 $ 291,655 $ 211,485 The acquired renewable energy facilities' non-financial assets represent estimates of the fair value of acquired PPAs and RECs based on significant inputs that are not observable in the market and thus represent a Level 3 measurement. The estimated fair values were determined based on an income approach and the estimated useful lives of the intangible assets range from 1 to 24 years. See Note 6 . Intangible Assets for additional disclosures related to the acquired intangible assets. Other Acquisitions Atlantic Power Corporation wind power plant transaction On June 26, 2015 , SunEdison closed the acquisition of 521.0 MW of operating wind power plants located in Idaho and Oklahoma from Atlantic Power Corporation, for total cash consideration of $347.2 million . The assets are contracted under long term PPAs with investment grade utilities with a weighted-average credit rating of A3 and a weighted-average remaining life of 18 years. Concurrent with the closing, SunEdison formed its second warehouse facility, which we refer to as TerraForm Private warehouse, to hold the acquired operating assets from Atlantic Power for a maximum period of seven years. The Company has an exclusive call right over the warehoused operating assets, and expects to acquire them into our portfolio over time. Acquisition of Invenergy wind power plants On June 30, 2015 , the Company entered into definitive agreements to acquire net ownership of 930.0 MW of operating and under construction wind power plants from Invenergy Wind LLC (together with its subsidiaries, ‘‘Invenergy Wind’’). The Company intends to acquire 265.0 MW of the wind power plants (the ‘‘Acquired Portfolio’’) and the Company is pursuing funding for the remaining 665.0 MW of wind power plants (the ‘‘Warehouse Portfolio’’) through a drop down warehouse facility in partnership with third party investors and SunEdison. The Warehouse Portfolio would initially be acquired by such warehouse facility, and the Company would be offered call rights to acquire those assets in the future. Although the Company is pursuing funding of the Warehouse Portfolio through a warehouse facility, there is no assurance that the Company will be able to obtain such funding, and as a result, may be required to directly acquire the Warehouse Portfolio under the terms of the purchase agreement with Invenergy Wind. The aggregate consideration payable for the acquisitions of the Acquired Portfolio and the Warehouse Portfolio is approximately $2.0 billion , including approximately $818.0 million of indebtedness to be repaid or assumed. As of July 17, 2015 , the Company maintains commitments for a senior unsecured bridge facility of up to $860.0 million to fund a portion of the acquisition of the Invenergy wind power plants. The Acquired Portfolio is comprised of two contracted wind power plants located in the United States and Canada with a weighted average remaining contract life of 19 years and an average counterparty credit rating of AA. Invenergy Wind will retain a 9.9% stake in the United States assets and will provide certain operation and maintenance services for these wind power plants. Final closing of this acquisition is expected by the fourth quarter of 2015. Subsequent Event Acquisition of Vivint Solar On July 20, 2015 , SunEdison and Vivint Solar, Inc. ("Vivint Solar") signed a definitive merger agreement pursuant to which SunEdison will acquire Vivint Solar for approximately $2.2 billion , payable in a combination of cash, shares of SunEdison common stock and SunEdison convertible notes. In connection with SunEdison's acquisition of Vivint Solar, the Company entered into a definitive purchase agreement with SunEdison to acquire Vivint Solar's residential solar generation facilities with a nameplate capacity of 523.0 MW (the “Vivint Operating Assets”), which is expected to be completed by the end of 2015, for $922.0 million . The Company intends to finance this acquisition with existing cash, availability under our Revolver and the assumption of project-level debt. A separate Call Right Agreement provides the Company the right to acquire future completed residential and small commercial projects from SunEdison's expanded residential and small commercial business unit. Additionally, on July 20, 2015 , the Company obtained commitments for a senior unsecured bridge facility which provides the Company with up to $960.0 million to fund the acquisition of the Vivint Operating Assets.

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Property and Equipment	PROPERTY AND EQUIPMENT Property and equipment, net consists of the following: (In thousands) June 30, 2015 December 31, 2014 Renewable energy facilities $ 3,842,300 $ 2,241,728 Less accumulated depreciation - renewable energy facilities (111,667 ) (52,981 ) Property and equipment, net 3,730,633 2,188,747 Construction in progress - renewable energy facilities 198,081 448,392 Total property and equipment $ 3,928,714 $ 2,637,139 Depreciation expense related to property and equipment was $32.7 million and $57.8 million for the three and six months ended June 30, 2015 , respectively, as compared to $4.6 million and $7.7 million for the same periods in the prior year. Construction in progress represents $198.1 million of costs incurred to complete the construction of the facilities in the Company's current portfolio that were either contributed to the Company by SunEdison or acquired from SunEdison. When projects are contributed or sold to the Company after completion by SunEdison, the Company retroactively recasts its historical financial statements to present the construction activity as if it consolidated the facility at inception of the construction. All construction in progress costs are stated at SunEdison's historical cost. These costs include capitalized interest costs and amortization of deferred financing costs incurred during the asset's construction period, which totaled $4.1 million and $4.8 million for the three and six months ended June 30, 2015 , respectively, and as compared to $6.1 million and $8.2 million for the same periods in the prior year.

Intangibles

Intangibles	6 Months Ended
	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Intangibles	INTANGIBLES The following table presents the gross carrying amount and accumulated amortization of intangibles as of June 30, 2015 : (In thousands, except weighted average amortization period) Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Accumulated Currency Translation Adjustment Net Book Value Revenue contracts 19 years $ 531,115 $ (13,647 ) $ (1,780 ) $ 515,688 The following table presents the gross carrying amount and accumulated amortization of intangibles as of December 31, 2014 : (In thousands, except weighted average amortization period) Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Accumulated Currency Translation Adjustment Net Book Value Revenue contracts 21 years $ 371,765 $ (6,169 ) $ (3,923 ) $ 361,673 As of June 30, 2015 and December 31, 2014 , the Company had revenue contracts representing long-term PPAs and RECs that were obtained through acquisitions (see Note. 4 Acquisitions ). Revenue contracts are amortized on a straight-line basis over the remaining lives of the agreements, which range from 1 to 24 years as of June 30, 2015 . Amortization expense related to the revenue contracts is recorded on the unaudited consolidated statements of operations as either a reduction or increase of revenue when the contract rate is above or below market rates (favorable or unfavorable) or within depreciation, accretion and amortization expense when the contract rate is equal to market rates (in-place). Amortization expense was $8.8 million and $14.1 million during the three and six months ended June 30, 2015 , respectively, $5.4 million and $5.0 million of which were a decrease in revenue and $3.4 million and $9.1 million of which were recorded as depreciation, accretion and amortization expense in the accompanying unaudited consolidated statement of operations. Amortization expense was $0.8 million during both the three and six months ended June 30, 2014 and was recorded on the unaudited consolidated statements of operations as a reduction of revenue.

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES The Company is the primary beneficiary of twelve variable interest entities ("VIEs") in renewable energy facilities that were consolidated as of June 30, 2015 , nine of which existed and were consolidated as of December 31, 2014 . The VIEs own and operate renewable energy facilities in order to generate contracted cash flows. The VIEs were funded through a combination of equity contributions from the owners and non-recourse, project-level debt. No VIEs were deconsolidated during the six months ended June 30, 2015 and 2014 . The carrying amounts and classification of the consolidated VIEs’ assets and liabilities included in the Company's unaudited consolidated balance sheet are as follows: (In thousands) June 30, 2015 December 31, 2014 Current assets $ 77,088 $ 69,955 Noncurrent assets 1,923,042 1,756,276 Total assets $ 2,000,130 $ 1,826,231 Current liabilities $ 116,953 $ 64,324 Noncurrent liabilities 739,135 707,989 Total liabilities $ 856,088 $ 772,313 The amounts shown above in the table exclude any potential VIEs under the First Wind acquisition as the Company has not completed the accounting related to this business combination. All of the assets in the table above are restricted for settlement of the VIE obligations, and all of the liabilities in the table above can only be settled by using VIE resources.

Long-term Debt

Long-term Debt	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Long-term Debt	LONG-TERM DEBT Long-term debt consists of the following: (In thousands, except rates) June 30, 2015 December 31, 2014 Interest Type Current Interest Rate % Financing Type Corporate-level long-term debt: Term Loan $ — $ 573,500 Variable 5.3¹ Term debt Senior Notes due 2023 950,000 — Fixed 5.9 Senior notes Project-level long-term debt: Permanent financing 833,848 824,166 (2) 5.9³ Term debt / Senior notes Construction financing 346,220 171,383 Variable 3.2³ Construction debt Financing lease obligations 139,437 126,167 Imputed 6.3³ Financing lease obligations Total principal due for long-term debt and financing lease obligations 2,269,505 1,695,216 6.0³ Less current maturities (322,115 ) (97,412 ) Net unamortized (discount) premium (2,595 ) 1,473 Long-term debt and financing lease obligations, less current portion $ 1,944,795 $ 1,599,277 ——— (1) The Company entered into an interest rate swap agreement fixing the interest rate at 5.33% , which was terminated upon repayment of the Term Loan. (2) Includes variable rate debt and fixed rate debt. As of June 30, 2015 , 67% of this balance had a fixed interest rate and the remaining 33% of this balance had a variable interest rate. The Company has entered into interest rate swap agreements to fix the interest rates of all variable rate permanent project-level debt (see Note 10 . Derivatives ). (3) Represents the weighted average effective interest rate as of June 30, 2015 . Corporate-level Long-term Debt Term Loan On January 28, 2015 , the Company repaid the remaining outstanding principal balance on the Term Loan of $573.5 million . The Company recognized a $12.0 million loss on the extinguishment of debt during the six months ended June 30, 2015 , as a result of this repayment. Revolving Credit Facilities On January 28, 2015 , the Company replaced its existing revolver with a new $550.0 million revolving credit facility (the "Revolver"). The Revolver consists of a revolving credit facility in an amount of at least $550.0 million available for revolving loans and letters of credit. The Company recognized a $1.3 million loss on the extinguishment of debt during the six months ended June 30, 2015 as a result of the exchange. On May 1, 2015 , the Company exercised its option to increase its borrowing capacity under the Revolver by $100.0 million . As a result of this transaction, the Company had a total borrowing capacity of $650.0 million under the Revolver as of June 30, 2015 . There were no amounts outstanding under the Revolver as of June 30, 2015 or December 31, 2014 . On July 13, 2015 , the Company obtained a commitment from a lender under the Revolver to increase the Company's borrowing capacity under the Revolver by $75.0 million . Upon the satisfaction of certain customary conditions the total borrowing capacity under the Revolver will be increased to $725.0 million . The Revolver matures on January 28, 2020 . Each of Terra Operating LLC's existing and subsequently acquired or organized domestic restricted subsidiaries (excluding non-recourse subsidiaries) and Terra LLC are or will become guarantors under the Revolver. At Terra Operating LLC’s option, all outstanding amounts under the Revolver bears interest initially at a rate per annum equal to either (i) a base rate plus a margin of 1.50% or (ii) a reserve adjusted Eurodollar rate plus a margin of 2.50% . After the fiscal quarter ended June 30, 2015 , the base rate margin will range between 1.25% and 1.75% and the Eurodollar rate margin will range between 2.25% and 2.75% as determined by reference to a leverage-based grid. The Revolver provides for voluntary prepayments, in whole or in part, subject to notice periods, and requires Terra Operating LLC to prepay outstanding borrowings in an amount equal to 100% of the net cash proceeds received by Terra LLC or its restricted subsidiaries from the incurrence of indebtedness not permitted by the Revolver by Terra Operating LLC or its restricted subsidiaries. The Revolver, each guaranty and any interest rate, currency hedging or hedging of Renewable Energy Certificate ("REC") obligations of Terra Operating LLC or any guarantor owed to the administrative agent, any arranger or any lender under the Revolver is secured by first priority security interests in (i) all of Terra Operating LLC's and each guarantor’s assets, (ii) 100% of the capital stock of Terra Operating LLC and each of its domestic restricted subsidiaries and 65% of the capital stock of each of Terra Operating LLC’s foreign restricted subsidiaries, and (iii) all intercompany debt. Notwithstanding the foregoing, collateral under the Revolver excludes the capital stock of non-recourse subsidiaries. Senior Notes due 2023 On January 28, 2015 , our indirect subsidiary Terra Operating LLC, issued $800.0 million of 5.875% senior notes due 2023 at an offering price of 99.214% of the principal amount. Terra Operating LLC used the net proceeds from this offering to fund a portion of the purchase price payable in the First Wind acquisition. On June 11, 2015 , our indirect subsidiary Terra Operating LLC, issued an additional $150.0 million of 5.875% senior notes due 2023 (collectively, with the $800.0 million initially issued, the "Senior Notes due 2023"). The offering price of the additional $150.0 million of notes was 101.5% of the principal amount and Terra Operating LLC used the net proceeds from the offering to repay existing borrowings under the Revolver. The Senior Notes due 2023 are senior obligations of Terra Operating LLC and are guaranteed by Terra LLC and each of Terra Operating LLC's existing and future subsidiaries that guarantee its senior secured credit facility, subject to certain exceptions. Bridge Facility On March 31, 2015, the Company entered into an agreement with Morgan Stanley Senior Funding, Inc. which provided the Company with up to $515.0 million of senior unsecured bridge facility to fund the acquisition of the Atlantic Power wind power plants. This bridge facility was terminated during the second quarter of 2015 due to the assets being acquired by the TerraForm Private warehouse (see Note 4 . Acquisitions) . Project-level Long-term Debt The Company's renewable energy facilities have long-term debt obligations in separate legal entities. The Company typically finances its renewable energy facilities through project entity specific debt secured by the renewable energy facility's assets (mainly the renewable energy facility) with no recourse to the Company. Typically, these financing arrangements provide for a construction loan, which upon completion may or may not be converted into a term loan. SunE Perpetual Lindsay A construction term loan to finance and develop the construction of the SunE Perpetual Lindsay utility-scale solar power plant was entered into during 2014. During the six months ended June 30, 2015 , SunEdison repaid the remaining outstanding principal balance of CAD 47.7 million ($ 38.6 million USD equivalent) due on the SunE Perpetual Lindsay construction term loan on the Company's behalf which was recorded as a capital contribution from SunEdison on the statement of equity. Financing Lease Obligations In certain transactions, the Company accounts for the proceeds of sale leasebacks as financings, which are typically secured by the renewable energy facility asset and its future cash flows from energy sales, and without recourse to the Company under the terms of the arrangement. As a result of the First Wind acquisition, the Company acquired approximately $47.4 million of financing lease obligations. The financing lease obligations assumed by the Company include those pursuant to a sale-leaseback agreement, entered into by First Wind on November 21, 2012, whereby First Wind sold substantially all of the property, plant and equipment of the related wind power plant to a financial institution and simultaneously entered into a long-term lease with that financial institution for the use of the assets. Under the terms of the agreement, the Company will continue to operate the wind facility and has the option to extend the lease or repurchase the assets sold at the end of the lease term. Debt Extinguishments As part of the First Wind acquisition, the Company repaid certain long-term indebtedness of the First Wind Operating Entities. The Company recognized a loss on the extinguishment of debt of $6.4 million during the six months ended June 30, 2015 as a result of this repayment. On May 22, 2015 , SunEdison acquired the lessor interest in a portfolio of operating solar generation facilities and concurrently sold the portfolio to the Company. Upon acquisition of the Duke Energy operating facility, the Company recognized a net gain on the extinguishment of debt of $11.4 million due to the termination of $31.5 million of financing lease obligations of the portfolio. Maturities The aggregate amounts of payments on long-term debt including financing lease obligations, and excluding amortization of debt discounts and premiums, due after June 30, 2015 are as follows: (In thousands) Remainder of 2015¹ 2016² 2017 2018 2019 Thereafter Total Maturities of long-term debt as of June 30, 2015 $ 98,159 $ 310,066 $ 37,864 $ 39,374 $ 50,229 $ 1,733,813 $ 2,269,505 ——— (1) The amount of long-term debt due in 2015 includes $65.4 million of construction debt for the U.S. Call Right Projects. (2) The amount of long-term debt due in 2016 includes GBP 172.6 million (USD $271.3 million ) of debt for the Fairwinds & Crundale facilities and the U.K. Call Right Projects. Subsequent Event Senior Notes due 2025 On July 17, 2015 , our indirect subsidiary Terra Operating LLC, issued $300.0 million of 6.125% senior notes due 2025 at an offering price of 100% of the principal amount (the "Senior Notes due 2025"). Terra Operating LLC intends to use the net proceeds from the offering to fund a portion of the price of the Invenergy wind power plants acquisition. The Senior Notes due 2025 are senior obligations of Terra Operating LLC and are guaranteed by Terra LLC and each of Terra Operating LLC's existing and future subsidiaries that guarantee its senior secured credit facility, subject to certain exceptions. Bridge Facilities On July 1, 2015 , the Company obtained commitments for a senior unsecured bridge facility which provides the Company with up to $1,160.0 million to fund the acquisition of the Invenergy wind power plants. On July 17, 2015 , the Company terminated $300.0 million of the bridge facility commitment upon the issuance of our Senior Notes due 2025. On July 20, 2015 , the Company obtained commitments for a senior unsecured bridge facility which provides the Company with up to $960.0 million to fund the acquisition of Vivint Solar.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The income tax provision consisted of the following: Three Months Ended June 30, Six Months Ended June 30, (In thousands, except effective tax rate) 2015 2014 2015 2014 Income/(Loss) before income tax expense (benefit) $ 30,348 $ (18,051 ) $ (53,357 ) $ (23,777 ) Income tax expense (benefit) 1,214 (5,318 ) 1,169 (6,875 ) Effective tax rate 4.0 % 29.5 % 2.2 % 28.9 % As of June 30, 2015 , the Company owns 57.0% of Terra LLC and consolidates the results of Terra LLC through its controlling interest. The Company records SunEdison's 43.0% ownership of Terra LLC as a non-controlling interest in the financial statements. Terra LLC is treated as a partnership for income tax purposes. As such, the Company records income tax on its 57.0% of Terra LLC's taxable income and SunEdison records income tax on its 43.0% share of taxable income generated by Terra LLC. For the six months ended June 30, 2015 , the overall effective tax rate was different than the statutory rate of 35% primarily due to the recording of a valuation allowance on certain tax benefits attributed to the Company and to lower statutory income tax rates in our foreign jurisdictions. For the six months ended June 30, 2015 , the tax benefits for losses realized prior to the IPO were recognized primarily because of existing deferred tax liabilities. As of June 30, 2015 , most jurisdictions are in a net deferred tax asset position. A valuation allowance is recorded against the deferred tax assets primarily because of the history of losses in those jurisdictions.

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	DERIVATIVES As part of the Company’s risk management strategy, the Company has entered into derivative instruments which include interest rate swaps, foreign currency contracts and commodity contracts to mitigate interest rate, foreign currency and commodity price exposure. If the Company elects to do so and if the instrument meets the criteria specified in Accounting Standards Codification ("ASC") 815, Derivatives and Hedging , the Company designates its derivative instruments as cash flow hedges. The Company enters into interest rate swap agreements in order to hedge the variability of expected future cash interest payments. Foreign currency contracts are used to reduce risks arising from the change in fair value of certain foreign currency denominated assets and liabilities. The objective of these practices is to minimize the impact of foreign currency fluctuations on operating results. The Company also enters into commodity contracts to economically hedge price variability inherent in electricity sales arrangements. The objectives of these transactions are to minimize the impact of variability in spot electricity prices and stabilize estimated revenue streams. The Company does not use derivative instruments for speculative purposes. As of June 30, 2015 and December 31, 2014 , fair values of the following derivative instruments were included in the line items indicated. Fair Value of Derivative Instruments Hedging Contracts Derivatives Not Designated as Hedges (In thousands) Interest Rate Swaps Interest Rate Swaps Foreign Currency Contracts Commodity Contracts Gross Amounts of Assets/Liabilities Recognized Gross Amounts Offset in Consolidated Balance Sheet Net Amounts in Consolidated Balance Sheet As of June 30, 2015 Prepaid expenses and other current assets $ — $ — $ 1,607 $ 9,300 $ 10,907 $ (339 ) $ 10,568 Other assets 269 — 899 33,641 34,809 (446 ) 34,363 Total assets $ 269 $ — $ 2,506 $ 42,941 $ 45,716 $ (785 ) $ 44,931 Accounts payable and other current liabilities $ 807 $ — $ 757 $ — $ 1,564 $ (339 ) $ 1,225 Other long-term liabilities — 971 3,953 — 4,924 (446 ) 4,478 Total liabilities $ 807 $ 971 $ 4,710 $ — $ 6,488 $ (785 ) $ 5,703 As of December 31, 2014 Prepaid expenses and other current assets $ — $ — $ — $ — $ — $ — $ — Other assets — — 1,811 — 1,811 — 1,811 Total assets $ — $ — $ 1,811 $ — $ 1,811 $ — $ 1,811 Accounts payable and other current liabilities $ 1,925 $ 1,279 $ 685 $ — $ 3,889 $ — $ 3,889 Other long-term liabilities — — — — — — — Total liabilities $ 1,925 $ 1,279 $ 685 $ — $ 3,889 $ — $ 3,889 As of June 30, 2015 and December 31, 2014 , notional amounts for derivative instruments consisted of the following: Notional Amount as of (In thousands) June 30, 2015 December 31, 2014 Derivatives designated as hedges: Interest rate swaps (USD) $ 48,206 $ 349,213 Derivatives not designated as hedges: Interest rate swaps (USD) 16,538 16,861 Foreign currency contracts (GBP) 112,206 58,710 Foreign currency contracts (CAD) 50,275 25,415 Commodity contracts (MWhs) 2,027 — The Company has elected to present net derivative assets and liabilities on the balance sheet as a right to setoff exists. For interest rate swaps, the Company either nets our derivative assets and liabilities on a trade-by-trade basis or nets them in accordance with a master netting arrangement if such an arrangement exists with our counterparties. Foreign currency contracts are netted by currency in accordance with a master netting arrangement. The Company has a master netting arrangement for its commodity contracts for which no amounts were netted as of June 30, 2015 as each of the commodity contracts were in a gain position. Gains and losses on derivatives not designated as hedges for the three and six months ended June 30, 2015 and 2014 consisted of the following: Three Months Ended June 30, Six Months Ended June 30, (In thousands) Location of (Gain) Loss Recognized in Income 2015 2014 2015 2014 Interest rate swaps Interest expense, net $ (277 ) $ 153 $ (41 ) $ 723 Foreign currency contracts Loss on foreign currency exchange, net 2,763 902 2,860 902 Commodity contracts Operating revenues, net (6,021 ) — (1,762 ) — Gains/losses recognized related to interest rate swaps designated as cash flow hedges for the three and six months ended June 30, 2015 and 2014 consisted of the following: Three Months Ended June 30, Gain Recognized in Other Comprehensive Income (Effective Portion) Location of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) Amount of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) Amount of Loss Recognized in Income (Ineffective Portion and Amount Excluded from Effectiveness Testing) (In thousands) 2015 2014 2015 2014 2015 2014 Interest rate swaps $ (428 ) $ — Interest expense, net $ 350 $ — $ — $ — Six Months Ended June 30, Loss Recognized in Other Comprehensive Income (Effective Portion) Location of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) Amount of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) Amount of Loss Recognized in Income (Ineffective Portion and Amount Excluded from Effectiveness Testing) (In thousands) 2015 2014 2015 2014 2015 2014 Interest rate swaps $ 1,820 $ — Interest expense, net $ 3,207 $ — $ — $ — As of June 30, 2015 , the Company has posted letters of credit in the amount of $18.0 million as collateral related to certain commodity contracts. Certain derivative contracts contain provisions providing the counterparties a lien on specific assets as collateral. There was no cash collateral received or pledged as of December 31, 2014 related to our derivative transactions. Derivatives Designated as Hedges Interest Rate Swaps The Company has an interest rate swap agreement to hedge floating rate project-level debt. This interest rate swap qualifies for hedge accounting and was designated as a cash flow hedge. Under the interest rate swap agreement, the project pays a fixed rate and the counterparty to the agreement pays a floating interest rate. The amounts deferred in other comprehensive income and reclassified into earnings during the period related to the interest rate swap are provided in the table above. The loss expected to be reclassified into earnings over the next twelve months is approximately $0.8 million . Derivatives Not Designated as Hedges Interest Rate Swaps The Company has interest rate swap agreements that economically hedge the cash flows for project-level debt. These interest rate swaps pay a fixed rate and the counterparties to the agreements pay a floating interest rate. The changes in fair value are recorded in interest expense, net in the unaudited consolidated statement of operations as these hedges are not accounted for under hedge accounting. Foreign Currency Contracts The Company has foreign currency contracts in order to economically hedge its exposure to foreign currency fluctuations. The settlement of these hedges occurs on a quarterly basis through maturity. As these hedges are not accounted for under hedge accounting, the changes in fair value are recorded in loss on foreign currency exchange, net in the unaudited consolidated statement of operations. Commodity Contracts The Company has commodity contracts in order to economically hedge commodity price variability inherent in certain electricity sales arrangements. If the Company sells electricity to an independent system operator market and there is no PPA available, it may enter into a commodity contract to hedge all or a portion of their estimated revenue stream. These commodity contracts require periodic settlements in which the Company receives a fixed price based on specified quantities of electricity and pays the counterparty a floating market price based on the same specified quantity of electricity. As these hedges are not accounted for under hedge accounting, the changes in fair value are recorded in operating revenues net, in the unaudited consolidated statement of operations.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	FAIR VALUE OF FINANCIAL INSTRUMENTS The carrying amount and estimated fair value of the Company's long-term debt as of June 30, 2015 and December 31, 2014 is as follows: As of June 30, 2015 As of December 31, 2014 (In thousands) Carrying Amount Fair Value Carrying Amount Fair Value Long-term debt, including current portion $ 2,266,910 $ 2,311,441 $ 1,696,689 $ 1,704,706 The fair value of the Company's long-term debt was determined using inputs classified as Level 2 and a discounted cash flow approach using market rates for similar debt instruments. Recurring Fair Value Measurements The following table summarizes the financial instruments measured at fair value on a recurring basis classified in the fair value hierarchy (Level 1, 2 or 3) based on the inputs used for valuation in the accompanying unaudited consolidated balance sheet: (In thousands) As of June 30, 2015 As of December 31, 2014 Assets Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Foreign currency contracts $ — $ 1,990 $ — $ 1,990 $ — $ 1,811 $ — $ 1,811 Commodity contracts — 42,941 — 42,941 — — — — Total derivative assets $ — $ 44,931 $ — $ 44,931 $ — $ 1,811 $ — $ 1,811 Liabilities Interest rate swaps $ — $ 1,509 $ — $ 1,509 $ — $ 3,204 $ — $ 3,204 Foreign currency contracts — 4,194 — 4,194 — 685 — 685 Total derivative liabilities $ — $ 5,703 $ — $ 5,703 $ — $ 3,889 $ — $ 3,889 The fair value of assets and liabilities are determined using either unadjusted quoted prices in active markets (Level 1) or pricing inputs that are observable (Level 2) whenever that information is available and using unobservable inputs (Level 3) to estimate fair value only when relevant observable inputs are not available. The Company uses valuation techniques that maximize the use of observable inputs. Assets and liabilities are classified in their entirety based on the lowest priority level of input that is significant to the fair value measurement. Where observable inputs are available for substantially the full term of the asset or liability, the instrument is categorized in Level 2. If the inputs into the valuation are not corroborated by market data, in such instances, the valuation for these contracts is established using techniques including extrapolation from or interpolation between actively traded contracts as well as calculation of implied volatilities. When such inputs have a significant impact on the measurement of fair value, the instrument is categorized as Level 3. The Company regularly evaluates and validates the inputs used to determine fair value by using pricing services to support the underlying market price of commodity, interest rates and foreign currency exchange rates. The Company uses a discounted valuation technique to fair value its derivative assets and liabilities. The primary inputs in the valuation models for commodity contracts are market observable forward commodity curves and risk-free discount rates and to a lesser degree credit spreads. The primary inputs into the valuation of interest rate swaps and foreign currency contracts are forward interest rates, foreign currency exchange rates, and to a lesser degree, credit spreads. The Company's interest rate swaps, foreign currency contracts, and commodity contracts are considered Level 2, since all significant inputs are corroborated by market observable data. There were no transfers in or out of Level 1, Level 2 and Level 3 during the period.

Stockholder's Equity

Stockholder's Equity	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Stockholder's Equity	STOCKHOLDER'S EQUITY January 2015 Public Offering On January 22, 2015 , the Company sold 13,800,000 shares of its Class A common stock to the public in a registered offering including 1,800,000 shares sold pursuant to the underwriters' overallotment option. The Company received net proceeds of $390.6 million , which was used to purchase 13,800,000 Class A units of Terra LLC. Terra LLC used $50.9 million to repurchase 1,800,000 Class B units from SunEdison. Concurrent with this transaction, 1,800,000 shares of the Company's Class B common stock were canceled. June 2015 Public Offering On June 24, 2015 , the Company sold 18,112,500 shares of its Class A common stock to the public in a registered offering including 2,362,500 shares sold pursuant to the underwriters' overallotment option. The Company received net proceeds of $667.6 million , which was used to purchase 18,112,500 Class A units of Terra LLC. Terra LLC used $87.1 million to repurchase 2,362,500 Class B units from SunEdison. Concurrent with this transaction, 2,362,500 shares of the Company's Class B common stock were canceled. Riverstone Exchange As of June 2, 2015, all outstanding Class B1 units in Terra LLC and all outstanding shares of Class B1 common stock of the Company held by R/C US Solar Investment Partnership, L.P. (‘‘Riverstone’’) had been converted into Class A units of Terra LLC held by TerraForm Power and shares of Class A common stock of the Company. As of June 30, 2015 , the following shares of the Company were outstanding: Shares: Number Outstanding Shareholder(s) Class A common stock 79,904,190 * Class B common stock 60,364,154 SunEdison Class B1 common stock — Riverstone Total Shares 140,268,344 ——— * Class A common stockholders are comprised of: public and private investors, executive officers, management and personnel who provide services to the Company. The par value of Class A common stock reflected on the unaudited consolidated balance sheets and unaudited consolidated statement of stockholders' equity excludes 2,445,464 shares of unvested restricted Class A common stock awards. As of June 30, 2015 , the Company owned 57.0% of Terra LLC and consolidated the results of Terra LLC through its controlling interest, with SunEdison's 43.0% interest shown as a non-controlling interest. Dividends On May 7, 2015 , the Company declared a quarterly dividend for the first quarter of 2015 on the Company's Class A common stock of $0.325 per share, or $1.30 per share on an annualized basis. The first quarter dividend was paid on June 15, 2015 to shareholders of record as of June 1, 2015 .

Stock-based Compensation

Stock-based Compensation	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation	STOCK-BASED COMPENSATION The Company has equity incentive plans that provide for the award of incentive and nonqualified stock options, restricted stock awards ("RSAs") and restricted stock units ("RSUs") to personnel and directors who provide services to the Company, including personnel and directors who provide services to SunEdison. As of June 30, 2015 , an aggregate of 1,620,398 shares of Class A common stock were available for issuance under these plans. The stock-based compensation expense related to issued stock options, RSAs, and RSUs is recorded as a component of general and administrative expenses in the Company’s unaudited consolidated statements of operations and totaled $2.3 million and $7.5 million for the three and six months ended June 30, 2015 , respectively. There was no stock-based compensation expense for the three and six months ended June 30, 2014 . Upon exercise of the RSAs, RSUs, or stock options, the Company will issue shares that have been previously authorized to be issued. Restricted Stock Awards The following table presents information regarding outstanding RSAs as of June 30, 2015 , and changes during the six months ended June 30, 2015 : Number of RSAs Outstanding Weighted Average Grant Date Fair Value Per Share Balance at January 1, 2015 4,876,567 $ 1.12 Granted — — Forfeited (132,588 ) 0.68 Modified 66,294 35.05 Balance at June 30, 2015 4,810,273 $ 1.60 The amount of stock compensation expense related to the RSAs was $0.1 million and $2.6 million during the three and six months ended June 30, 2015 , respectively. As of June 30, 2015 , $0.9 million of total unrecognized compensation cost related to these awards is expected to be recognized over a period of approximately two years. Restricted Stock Units The following table presents information regarding outstanding RSUs as of June 30, 2015 , and changes during the six months ended June 30, 2015 : Number of RSUs Outstanding Weighted Average Grant Date Fair Value Per Share Balance at January 1, 2015 825,943 $ 27.37 Granted 1,180,000 34.37 Balance at June 30, 2015 2,005,943 $ 31.49 The amount of stock compensation expense related to RSUs was $2.1 million and $4.0 million during the three and six months ended June 30, 2015 , respectively. As of June 30, 2015 , $20.0 million of total unrecognized compensation cost related to RSUs is expected to be recognized over a period of approximately five years. The amount of stock-based compensation expense related to RSUs granted to personnel who provide services to SunEdison was $1.7 million and $1.9 million for the three and six months ended June 30, 2015 , respectively, and is recognized as a dividend to SunEdison on the unaudited consolidated balance sheets. The amount of stock-based compensation expense related to SunEdison RSUs granted to personnel who provide services to the Company was inconsequential for the three and six months ended June 30, 2015 , respectively, and is reflected in the unaudited consolidated statement of operations as part of general and administrative costs and has been treated as an equity contribution from SunEdison. Options The following table presents information regarding outstanding options as of June 30, 2015 , and changes during the six months ended June 30, 2015 : Number of Options Outstanding Weighted Average Exercise Price Per Share Aggregate Intrinsic Value Balance at January 1, 2015 150,000 $ 29.31 Granted — — Balance at June 30, 2015 150,000 $ 29.31 $ 1,301 Options exercisable at June 30, 2015 37,500 $ 29.31 $ 325 Aggregate intrinsic value represents the value of the Company's closing stock price of $37.98 on the last trading date of the period in excess of the weighted-average exercise price multiplied by the number of options outstanding or exercisable. The amount of stock compensation expense related to options was $0.1 million and $0.2 million during the three and six months ended June 30, 2015 , respectively. As of June 30, 2015 , $0.3 million of total unrecognized compensation cost related to options is expected to be recognized ratably over a period of approximately three years.

Earnings (Loss) Per Share

Earnings (Loss) Per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	EARNINGS (LOSS) PER SHARE Earnings (Loss) per share (“EPS”) are based upon the weighted-average shares outstanding. Unvested restricted stock awards that contain non-forfeitable rights to dividends are treated as participating securities and are included in the EPS computation using the two-class method, to the extent that there are undistributed earnings available as such securities do not participate in losses. Basic and diluted earnings (loss) per share Basic and diluted earnings (loss) per share for the three and six months ended June 30, 2015 was calculated as follows: (In thousands, except per share amounts) Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 Basic and diluted earnings (loss) per share¹: Net income (loss) attributable to Class A common stockholders $ 17,435 $ (10,681 ) Less: earnings (loss) pertaining to acquired Call Right and operating projects (10,635 ) (10,635 ) Less: dividends paid on Class A shares and participating RSAs (20,082 ) (20,082 ) Undistributed earnings (loss) attributable to Class A shares $ (13,282 ) $ (41,398 ) Weighted-average basic and diluted Class A shares outstanding 57,961 53,874 Distributed earnings per share $ 0.33 $ 0.35 Undistributed loss per share (0.23 ) (0.76 ) Basic and diluted earnings (loss) per share $ 0.10 $ (0.41 ) ——— (1) The computations for diluted earnings (loss) per share for the three and six months ended June 30, 2015 excludes approximately 60,364,154 shares of Class B common stock, 2,445,464 of unvested RSAs, 2,005,943 RSUs and 150,000 options to purchase the Company's shares because the effect would have been anti-dilutive.

Non-controlling Interests

Non-controlling Interests	6 Months Ended
	Jun. 30, 2015
Noncontrolling Interest [Abstract]
Non-controlling Interests	NON-CONTROLLING INTERESTS Non-controlling Interests Non-controlling interests represent the portion of net assets in consolidated entities that are not owned by the Company. The following table presents the non-controlling interest balances by entity, reported in stockholders’ equity in the unaudited consolidated balance sheets as of June 30, 2015 and December 31, 2014 : (In thousands) June 30, 2015 December 31, 2014 Non-controlling interests in Terra LLC¹: SunEdison $ 962,791 $ 722,342 Riverstone — 65,376 Total non-controlling interests in Terra LLC 962,791 787,718 Total non-controlling interests in renewable energy facilities 290,692 256,811 Total non-controlling interests $ 1,253,483 $ 1,044,529 ——— (1) Reflects an equity reallocation of $163.0 million due to a quarterly adjustment of capital balances to reflect respective ownership percentages as of the balance sheet date. Redeemable Non-controlling Interests Non-controlling interests in subsidiaries that are redeemable either at the option of the holder or at fixed and determinable prices at certain dates are classified as redeemable non-controlling interests in subsidiaries between liabilities and stockholders' equity in the unaudited consolidated balance sheets. The redeemable non-controlling interests in subsidiaries balance is determined using the hypothetical liquidation at book value method for the VIE funds or allocation of share of income or losses in other subsidiaries subsequent to initial recognition, however, the non-controlling interests balance cannot be less than the estimated redemption value. The following table presents the activity of the redeemable non-controlling interest balance reported on the unaudited consolidated balance sheets as of as of June 30, 2015 and December 31, 2014 : Redeemable Non-controlling Interests (In thousands) Capital Accumulated Deficit Total Balance at December 31, 2014 $ 24,338 $ — $ 24,338 Consolidation of redeemable non-controlling interests in acquired projects 1,708 — 1,708 Sale of membership interests in projects 11,842 — 11,842 Distributions (1,287 ) — (1,287 ) Net loss — 1,627 1,627 Balance at June 30, 2015 $ 36,601 $ 1,627 $ 38,228

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Letters of Credit The Company's customers, vendors and regulatory agencies often require the Company to post letters of credit in order to guarantee performance under relevant contracts and agreements. The Company is also required to post letters of credit to secure obligations under various swap agreements and leases and may, from time to time, decide to post letters of credit in lieu of cash deposits in reserve accounts under certain financing arrangements. The amount that can be drawn under some of these letters of credit may be increased from time to time subject to the satisfaction of certain conditions. As of June 30, 2015 , the Company had outstanding letters of credit in the amount of $175.7 million . Guarantee Agreements The Company and its subsidiaries have provided guarantees to certain of its institutional tax equity investors in connection with its tax equity financing transactions. These guarantees do not guarantee the returns targeted by the tax equity investors, but rather support any potential indemnity payments payable under the tax equity agreements. The Company and its subsidiaries have provided guarantees in connection with acquisitions of third party assets or to support contractual obligations and may provide additional guarantees in connection with future acquisitions. In particular, on May 19, 2015 , the Company provided a guaranty in connection with SunEdison’s agreement to acquire a 19.0 MW hydro-electric project and a 185.0 MW wind project in Chile for approximately $195.0 million . The Company has the right to acquire these projects upon the completion of each project, which is expected in late 2015 and late 2016, respectively. Membership Interest Purchase and Sale Agreement During the six months ended June 30, 2015 , the Company entered into two Membership Interest Purchase and Sale Agreements ("MIPSA") with affiliates of SunEdison to purchase two wind power plants. Subsequent to June 30, 2015 , the Company entered into a third MIPSA with SunEdison to purchase an additional wind power plant. See Note 17 . Related Parties for additional discussion of these MIPSAs. Legal Proceedings The Company is not a party to any legal proceedings other than legal proceedings arising in the ordinary course of our business. This Company is also a party to various administrative and regulatory proceedings that have arisen in the ordinary course of our business. Although the Company cannot predict with certainty the ultimate resolution of such proceedings or other claims asserted against us, the Company does not believe that any currently pending legal proceeding to which the Company is a party will have a material adverse effect on our business, financial condition or results of operations. Daniel Gerber v. Wiltshire Council On March 5, 2015, the U.K. High Court issued a verdict that quashed (nullified) the planning permission necessary to build the Company’s 11.2 MW Norrington renewable energy facility in Wiltshire, England. The court found that, among other issues, the local Wiltshire council failed to properly notify a local landowner (the claimant) or notify the English historic preservation agency before granting the permission. U.K. counsel have advised us that the quashing of this planning permission deviates significantly from established case law. The Company filed its appeal of this ruling on March 25, 2015. The appeal was granted and the hearing is scheduled to be held in January 2016. At this time, the Company does not have enough information regarding the probable outcome or the estimated range of reasonably probable losses associated with this ruling, and as of June 30, 2015 , no such accrual has been recorded in the unaudited consolidated financial statements. The renewable energy facility was constructed by SunEdison pursuant to an engineering, procurement and construction agreement, under which SunEdison assumed development and construction risk. If the ultimate outcome of this case were unfavorable and no replacement permit could be obtained, the Company would therefore be able recover its investment in this project from SunEdison.

Related Parties

Related Parties	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Related Parties	RELATED PARTIES Management Services Agreement General and administrative affiliate costs represent costs incurred by SunEdison for services provided to the Company pursuant to the Management Services Agreement ("MSA"). Pursuant to the MSA, SunEdison agreed to provide or arrange for other service providers to provide management and administrative services including legal, accounting, tax, treasury, project finance, information technology, insurance, employee benefit costs, communications, human resources, and procurement to the Company and its subsidiaries. As consideration for the services provided, the Company will pay SunEdison a base management fee as follows: (i) 2.5% of the Company's cash available for distribution in 2015 , 2016 , and 2017 (not to exceed $4.0 million in 2015 , $7.0 million in 2016 or $9.0 million in 2017 ), and (ii) an amount equal to SunEdison's or other service provider's actual cost in 2018 and thereafter. General and administrative affiliate costs were $17.9 and $24.8 million for the three and six months ended June 30, 2015 , respectively, and $2.1 million and $4 million , respectively, for the same periods in 2014 . These costs are reflected in the unaudited consolidated statement of operations as general and administrative - affiliate costs. Cash consideration paid to SunEdison for these services for the three and six months ended June 30, 2015 totaled $1.3 million and $2.0 million , respectively, and general and administrative - affiliate costs in excess of cash consideration paid have been treated as an equity contribution from SunEdison. Interest Payment Agreement Immediately prior to the completion of the IPO on July 23, 2014 , Terra LLC and Terra Operating LLC entered into an interest payment agreement (the "Interest Payment Agreement") with SunEdison and its wholly owned subsidiary, SunEdison Holdings Corporation, pursuant to which SunEdison will pay all of the scheduled interest on the Term Loan through the third anniversary of Terra LLC and Terra Operating LLC entering into the Term Loan, up to an aggregate of $48.0 million over such period (plus any interest due on any payment not remitted when due). Interest expense incurred under the term loan is reflected in the unaudited consolidated statement of operations and the reimbursement for such costs is treated as an equity contribution in additional paid-in capital from SunEdison. The Company did not receive an equity contribution during the three months ended June 30, 2015 . During the six months ended June 30, 2015 , the Company received an equity contribution of $4.0 million from SunEdison pursuant to the Interest Payment Agreement. There were no amounts outstanding as of June 30, 2015 . On January 28, 2015, Terra LLC and Terra Operating entered into the Amended and Restated Interest Payment Agreement (the “Amended Interest Payment Agreement”) with SunEdison and SunEdison Holdings Corporation. The Amended Interest Payment Agreement amends and restates the Interest Payment Agreement, all in accordance with the terms of the Intercompany Agreement. Under the Amended Interest Payment Agreement, SunEdison agreed to provide support with respect to the interest payment obligations of Terra Operating LLC with respect to its $800.0 million aggregate principal amount of 5.875% Senior Notes due 2023 under the Indenture, dated January 28, 2015 . Incentive Revenue Certain Solar Renewable Energy Certificates ("SRECs") are sold to SunEdison under contractual arrangements at fixed prices. Revenue from the sale of SRECs to affiliates was $0.3 million and $0.5 million during the three and six months ended June 30, 2015 , respectively, and were $0.4 million and $0.5 million during the same periods in 2014 , respectively, and are reported as operating revenues, net in the unaudited consolidated statements of operations. Operations and Maintenance Operations and maintenance services are provided to the Company by affiliates of SunEdison pursuant to contractual agreements. Costs incurred for these services were $4.2 million and $7.8 million during the three and six months ended June 30, 2015 , respectively, and were $0.8 million and $1.2 million , respectively, during the same periods in 2014 , respectively, and are reported as cost of operations - affiliates in the unaudited consolidated statements of operations. SunEdison and Affiliates Certain of the Company's expenses and capital expenditures related to construction in process are paid by affiliates of SunEdison and are reimbursed by the Company to the same, or other affiliates of SunEdison. Additionally, all amounts incurred by the Company and not paid as of the balance sheet date for Call Right Projects acquired from SunEdison are reported as due to SunEdison and affiliates. As of June 30, 2015 , the Company owed SunEdison and affiliates $28.1 million , which is reported as due to SunEdison and affiliates, net in the unaudited consolidated balance sheets. As of December 31, 2014 , the Company owed SunEdison and affiliates $186.4 million , which is reported as due to SunEdison and affiliates, net in the unaudited consolidated balance sheets. On June 15, 2015 , the Company paid its first quarter 2015 dividend of $16.8 million to its Class B shareholder, SunEdison, which included a reduction in the dividend per share amount for Distribution Forbearance. Incentive Distribution Rights Incentive Distribution Rights ("IDRs") represent the right to receive increasing percentages ( 15.0% , 25.0% and 50.0% ) of Terra LLC’s quarterly distributions after the Class A Units, Class B units, and Class B1 units of Terra LLC have received quarterly distributions in an amount equal to $0.2257 per unit (the "Minimum Quarterly Distribution") and the target distribution levels have been achieved. Upon the completion of the IPO, SunEdison holds 100% of the IDRs. Initial IDR Structure If for any quarter: • Terra LLC has made cash distributions to the holders of its Class A units, Class B1 units and, subject to the Distribution Forbearance Provisions, Class B units in an amount equal to the Minimum Quarterly Distribution; and • Terra LLC has distributed cash to holders of Class A units and holders of Class B1 units in an amount necessary to eliminate any arrearages in payment of the Minimum Quarterly Distribution; then Terra LLC will make additional cash distributions for that quarter among holders of its Class A units, Class B units, Class B1 units and the IDRs in the following manner: • first, to all holders of Class A units, Class B1 units and, subject to the Distribution Forbearance Provisions, Class B units, pro rata, until each holder receives a total of $0.3386 per unit for that quarter (the “First Target Distribution”) ( 150.0% of the Minimum Quarterly Distribution); • second, 85.0% to all holders of Class A units, Class B1 units and, subject to the Distribution Forbearance Provisions, Class B units, pro rata, and 15.0% to the holders of the IDRs, until each holder of Class A units, Class B1 units and, subject to the Distribution Forbearance Provisions, Class B units receives a total of $0.3950 per unit for that quarter (the “Second Target Distribution”) ( 175.0% of the Minimum Quarterly Distribution); • third, 75.0% to all holders of Class A units, Class B1 units and, subject to the Distribution Forbearance Provisions, Class B units, pro rata, and 25.0% to the holders of the IDRs, until each holder of Class A units, Class B1 units and, subject to the Distribution Forbearance Provisions, Class B units receives a total of $0.4514 per unit for that quarter (the “Third Target Distribution”) ( 200.0% of the Minimum Quarterly Distribution); and • thereafter , 50.0% to all holders of Class A units, Class B1 units and, subject to the Distribution Forbearance Provisions, Class B units, pro rata, and 50.0% to the holders of the IDRs. There were no payments for IDRs made by the Company during the three and six months ended June 30, 2015 and 2014 . Membership Interest Purchase and Sale Agreement On March 30, 2015 , the Company entered into two MIPSAs in which the Company has committed to purchase two wind power plants from affiliates of SunEdison upon the facilities achieving commercial operations. The facilities are located in Maine and Texas with nameplate capacities of 147.6 MW and 200.0 MW, respectively. The total fixed purchase price is $378.2 million subject to certain adjustments. The facilities are currently under construction with commercial operations expected to be achieved in the third and fourth quarter of 2015, respectively. During July 2015, the Company entered into a third MIPSA in which the Company has committed to purchase a wind power plant from an affiliate of SunEdison upon the facility achieving commercial operations. The facility is located in Texas and has a nameplate capacity of 300.0 MW. The total fixed purchase price is $202.0 million subject to certain adjustments. The facility are currently under construction with commercial operations expected to be achieved in the second quarter of 2016. Support Agreement The Company entered into a project support agreement with SunEdison (the "Support Agreement"), which provides the Company the option to purchase additional solar generation facilities from SunEdison in 2015 and 2016. The Support Agreement also provides the Company a right of first offer with respect to certain other projects. On January 9, 2015, the Company paid $18.0 million to SunEdison as a deposit for the future acquisition of a 41.7 MW Call Right Project under the Support Agreement. This solar facility is located in Chile and is expected to achieve commercial operations and to be acquired by the Company in the fourth quarter of 2015. This deposit has been recored as due from SunEdison and affiliates in the unaudited consolidated balance sheet.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Segment Reporting	SEGMENT REPORTING The Company has two reportable segments: Solar and Wind. These segments include our entire portfolio of renewable energy facility assets and are determined based on the “management” approach. This approach designates the internal reporting used by management for making decisions and assessing performance as the source of the reportable segments. Corporate expenses include general and administrative expenses, acquisition costs, formation and offering related fees and expenses, interest expense on corporate indebtedness and stock-based compensation. All net operating revenues for the three and six months ended June 30, 2015 were earned by our reportable segments from external customers in the United States and its unincorporated territories, Canada, the United Kingdom and Chile. All net operating revenues for the three and six months ended June 30, 2014 were earned from external customers in the United States and its unincorporated territories, the United Kingdom and Chile. The following table reflects summarized financial information concerning the Company’s reportable segments for the three and six months ended June 30, 2015 and 2014 : Three Months Three Months Ended June 30, 2015 Ended June 30, 2014 (In thousands) Solar Wind Corporate Total Solar Wind Corporate Total Operating revenues, net $ 95,468 $ 34,578 $ — $ 130,046 $ 22,378 $ — $ — $ 22,378 Depreciation, accretion and amortization 29,537 8,599 — 38,136 4,953 — — 4,953 Other operating costs and expenses 15,821 5,979 30,429 52,229 2,591 — 6,240 8,831 Interest expense, net 19,047 94 16,820 35,961 7,430 — 17,191 24,621 Other non-operating (income) expenses (12,718 ) (1,318 ) (12,592 ) (26,628 ) 3,985 — (1,961 ) 2,024 Income tax expense (benefit)¹ — — 1,214 1,214 — — (5,318 ) (5,318 ) Net income (loss) $ 43,781 $ 21,224 $ (35,871 ) $ 29,134 $ 3,419 $ — $ (16,152 ) $ (12,733 ) Six Months Six Months Ended June 30, 2015 Ended June 30, 2014 (In thousands) Solar Wind Corporate Total Solar Wind Corporate Total Operating revenues, net $ 143,838 $ 56,723 $ — $ 200,561 $ 30,770 $ — $ — $ 30,770 Depreciation, accretion and amortization 55,292 14,735 — 70,027 8,387 — — 8,387 Other operating costs and expenses 30,828 18,992 52,996 102,816 3,563 — 7,830 11,393 Interest expense, net 35,385 851 36,580 72,816 14,430 — 17,718 32,148 Other non-operating (income) expenses (12,292 ) 7,117 13,434 8,259 4,580 — (1,961 ) 2,619 Income tax expense (benefit)¹ — — 1,169 1,169 — — (6,875 ) (6,875 ) Net income (loss) $ 34,625 $ 15,028 $ (104,179 ) $ (54,526 ) $ (190 ) $ — $ (16,712 ) $ (16,902 ) Balance Sheet Total assets² $ 3,924,640 $ 954,988 $ 293,541 $ 5,173,169 $ 3,155,180 $ — $ 514,170 $ 3,669,350 ——— (1) Income tax benefit is not allocated to the Company's Solar and Wind segments. (2) Represents total assets as of June 30, 2015 and December 31, 2014 . Corporate assets include cash and cash equivalents; other current assets; corporate-level debt and related deferred financing costs, net and other assets.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Other Comprehensive Income (Loss)	OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive income (loss) represents a measure of all changes in equity that result from recognized transactions and other economic events other than transactions with owners in their capacity as owners. Other comprehensive income (loss) includes foreign currency translations and gains (losses) on hedging instruments. The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax, for the six months ended June 30, 2015 : (In thousands) Foreign Currency Translation Adjustments Hedging Activities Accumulated Other Comprehensive Income (Loss) Balance, December 31, 2014 $ (1,149 ) $ (488 ) $ (1,637 ) Net unrealized gains (losses) arising during the period 577 (1,820 ) (1,243 ) Reclassification of net realized losses into earnings: Interest expense, net — 3,207 3,207 Other comprehensive income $ 577 $ 1,387 $ 1,964 Accumulated other comprehensive (loss) income (572 ) 899 327 Other comprehensive income attributable to non-controlling interests 315 798 1,113 Balance, June 30, 2015 $ (887 ) $ 101 $ (786 ) The following tables present each component of other comprehensive income (loss) and the related tax effects for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, 2015 June 30, 2014 (In thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Foreign currency translation adjustments: Net unrealized gains arising during the period $ 3,852 $ — $ 3,852 $ 573 $ — $ 573 Hedging activities: Net unrealized gains arising during the period 428 — 428 — — — Reclassification of net realized losses into earnings 350 — 350 — — — Net change 778 — 778 — — — Other comprehensive income $ 4,630 $ — $ 4,630 $ 573 $ — $ 573 Less: other comprehensive income attributable to non-controlling interests, net of tax 2,807 — Other comprehensive income attributable to Class A stockholders $ 1,823 $ 573 Six Months Ended June 30, 2015 June 30, 2014 (In thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Foreign currency translation adjustments: Net unrealized gains arising during the period $ 577 $ — $ 577 $ 573 $ — $ 573 Hedging activities: Net unrealized losses arising during the period (1,820 ) — (1,820 ) — — — Reclassification of net realized losses into earnings 3,207 — 3,207 — — — Net change 1,387 — 1,387 — — — Other comprehensive income $ 1,964 $ — $ 1,964 $ 573 $ — $ 573 Less: other comprehensive income attributable to non-controlling interests, net of tax 1,113 — Other comprehensive income attributable to Class A stockholders $ 851 $ 573

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	TerraForm Power, Inc. and subsidiaries (the "Company") is a subsidiary of SunEdison, Inc. ("SunEdison"). The accompanying unaudited consolidated financial statements have been prepared in accordance with the Securities and Exchange Commission’s, or SEC’s, regulations for interim financial information. Accordingly, they do not include all of the information and notes required by U.S. generally accepted accounting principles ("U.S. GAAP") for complete financial statements. The following notes should be read in conjunction with the accounting policies and other disclosures as set forth in the notes to the Company’s annual financial statements for the year ended December 31, 2014 . Interim results are not necessarily indicative of results for a full year. In the opinion of management, the accompanying unaudited consolidated financial statements contain all material adjustments consisting of normal and recurring accruals necessary to present fairly the Company's unaudited consolidated financial position as of June 30, 2015 , and the results of operations, comprehensive income and cash flows for the three and six months ended June 30, 2015 and 2014 .
Use of Estimates	Use of Estimates In preparing the unaudited consolidated financial statements, the Company used estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements. Such estimates also affect the reported amounts of revenues, expenses and cash flows during the reporting period. Actual results may differ from estimates under different assumptions or conditions.
New Accounting Pronouncement	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers , which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. This ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. This standard will become effective for us on January 1, 2018. Early application is permitted but not before January 1, 2017. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is currently evaluating the effect that ASU No. 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method or determined the effect of the standard on its ongoing financial reporting. In February 2015, the FASB issued ASU No. 2015-02 Consolidation (Topic 810) Amendments to the Consolidation Analysis , which affects the following areas of the consolidation analysis: limited partnerships and similar entities, evaluation of fees paid to a decision maker or service provider as a variable interest and in determination of the primary beneficiary, effect of related parties on the primary beneficiary determination and for certain investment funds. ASU No. 2015-02 is effective for us for our fiscal year ending December 31, 2016 and interim periods therein. The Company is evaluating the impact of this standard on our consolidated statements of financial position, results of operations and cash flows. In April 2015, the FASB issued ASU No. 2015-03 Interest - Imputation of Interest (Subtopic 835-30) Simplifying the Presentation of Debt Issuance Costs , which requires debt issuance costs related to a recognized debt liability to be presented on the balance sheet as a direct deduction from the debt liability. ASU No. 2015-03 is effective for us for our fiscal year ending December 31, 2016 and interim periods therein. The Company is evaluating the impact of this standard on our consolidated balance sheet. In April 2015, the FASB issued ASU No. 2015-06 Earnings Per Share , which provides guidance on the presentation of historical earnings per unit under the two-class method for transfers of net assets between entities under common control. ASU No. 2015-06 is effective for us for our fiscal year ending December 31, 2016 and interim periods therein. The Company is evaluating the impact of this standard on our consolidated financial statements. In July 2015, the FASB issued ASU No. 2015-11 Inventory , which requires inventory that is measured using the first-in, first-out method or average cost method to be measured at the lower of cost and net realizable value. ASU No. 2015-10 is effective for us for our fiscal year ending December 31, 2017 and interim periods therein. The Company is evaluating the impact of this standard on our SREC inventory.
Earnings Per Share	Earnings (Loss) per share (“EPS”) are based upon the weighted-average shares outstanding. Unvested restricted stock awards that contain non-forfeitable rights to dividends are treated as participating securities and are included in the EPS computation using the two-class method, to the extent that there are undistributed earnings available as such securities do not participate in losses.
Segment Reporting, Policy	The Company has two reportable segments: Solar and Wind. These segments include our entire portfolio of renewable energy facility assets and are determined based on the “management” approach. This approach designates the internal reporting used by management for making decisions and assessing performance as the source of the reportable segments. Corporate expenses include general and administrative expenses, acquisition costs, formation and offering related fees and expenses, interest expense on corporate indebtedness and stock-based compensation. All net operating revenues for the three and six months ended June 30, 2015 were earned by our reportable segments from external customers in the United States and its unincorporated territories, Canada, the United Kingdom and Chile. All net operating revenues for the three and six months ended June 30, 2014 were earned from external customers in the United States and its unincorporated territories, the United Kingdom and Chile.

Transactions Between Entities29

Transactions Between Entities Under Common Control (Tables)	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Recast of Prior Financial Information	The following table presents the changes to previously reported amounts of the Company's consolidated balance sheet as of December 31, 2014 included in the Company's Current Report on Form 8-K dated May 7, 2015: (In thousands) December 31, 2014 as Previously Recasted Acquired Call Right and Operating Projects December 31, 2014 Recast Cash and cash equivalents $ 468,554 $ — $ 468,554 Accounts receivable 31,986 50 32,036 Prepaid expenses and other current assets 22,620 17 22,637 Property and equipment, net 2,554,904 82,235 2,637,139 Deferred financing costs, net 42,113 628 42,741 Change in total assets $ 82,930 Current portion of long-term debt $ 84,104 $ 13,308 $ 97,412 Accounts payable, accrued expenses and other current liabilities 82,605 832 83,437 Due to SunEdison and affiliates, net 153,052 33,383 186,435 Deferred revenue (short-term) 21,989 2,275 24,264 Long-term debt and financing lease obligations, less current portion 1,568,517 30,760 1,599,277 Asset retirement obligations 76,111 2,064 78,175 Deferred revenue (long-term) 52,081 133 52,214 Deferred income taxes 7,702 175 7,877 Change in total liabilities $ 82,930 The following table presents the changes to previously reported amounts of the Company's consolidated statement of cash flows for the six months ended June 30, 2014 included in the Company's previously filed Quarterly Report on Form 10-Q: (In thousands) As Reported Acquired Call Right and Operating Projects June 30, 2014 Recast Cash flows from operating activities: Depreciation, accretion and amortization $ 8,001 $ 386 $ 8,387 Deferred taxes (6,875 ) 195 (6,680 ) Changes in assets and liabilities: Accounts receivable (14,034 ) (140 ) (14,174 ) Prepaid expenses and other current assets (9,526 ) — (9,526 ) Accounts payable, accrued interest, and other current liabilities 13,266 1,069 14,335 Deferred revenue 22,349 — 22,349 Cash flows from investing activities: Cash paid to SunEdison and third parties for solar generation facility construction (485,756 ) (38,349 ) (524,105 ) Due to SunEdison and affiliates, net — 3,313 3,313 Cash flows from financing activities: Borrowings of project-level long-term debt 518,737 32,873 551,610 Principal payments on project-level long-term debt (42,923 ) — (42,923 ) Payment of deferred financing costs (22,421 ) (668 ) (23,089 ) Net increase in cash and cash equivalents 14,872 — 14,872 Effect of exchange rate changes on cash and cash equivalents 100 — 100 Cash and cash equivalents at end of period 16,016 — 16,016 The following table presents the changes to previously reported amounts of the Company's consolidated statement of operations for the six months ended June 30, 2014 included in the Company's previously filed Quarterly Report on Form 10-Q: (In thousands) As Reported Acquired Call Right and Operating Projects June 30, 2014 Recast Operating revenues, net $ 30,077 $ 693 $ 30,770 Cost of operations 1,846 44 1,890 Cost of operations - affiliate 1,137 80 1,217 Depreciation, accretion and amortization 8,001 386 8,387 Interest expense, net 31,253 895 32,148 Change in net loss $ (712 )
Transactions Under Common Control, Summary of Acquisitions	The following table summarizes the Call Right and operating projects acquired by the Company from SunEdison during the six months ended June 30, 2015 , through a series of transactions: Nameplate Capacity (MW) Number of Sites As of June 30, 2015 (In thousands) Facility Size Type Location Initial Cash Paid Estimated Cash Due to SunEdison Debt Transferred Distributed Generation Solar U.S. 51.7 46 $ 76,371 $ 10,815 $ 4,460 Utility Solar U.S. 47.0 8 15,396 55,150 60,903 Utility Solar U.K. 214.3 14 141,783 9,924 218,201 Total 313.0 68 $ 233,550 $ 75,889 $ 283,564
Transactions Under Common Control, Summary of Results of Operations	The following table is a summary of the results of operations for the Call Right and operating projects acquired by the Company from SunEdison during the six months ended June 30, 2015 : (In thousands) Six Months Ended June 30, 2015 Operating revenues, net $ 14,324 Operating expenses 7,610 Operating income 6,714 Interest expense, net 3,496 Other income 10,315 Net income $ 13,533

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Business Acquisition, Pro Forma Information	The unaudited pro forma supplementary data is provided for informational purposes only and should not be construed to be indicative of the Company’s results of operations had the acquisitions been consummated on the date assumed or of the Company’s results of operations for any future date. Six Months Ended June 30, (In thousands) 2015 2014 Total operating revenues, net $ 217,276 $ 95,076 Net Loss 32,684 13,298
Schedule of Allocation of Assets and Liabilities of Purchased Renewable Generation Facilities	The estimated fair values of assets, liabilities and non-controlling interests pertaining to business combinations as of June 30, 2015 , are as follows: 2015 Preliminary 2014 Preliminary 2014 Final (In thousands) First Wind Northern Lights Other Capital Dynamics Other Mt. Signal Other Accounts receivable $ 8,667 $ 1,284 $ 2,959 $ 2,603 $ 4,092 $ 11,687 $ 5,400 Property and equipment 784,178 75,218 80,939 219,981 42,001 649,570 211,796 Intangible assets 115,200 25,865 31,577 71,453 16,604 119,767 107,676 Deferred income taxes — — — 26,578 — — — Restricted cash 6,630 — 827 15 3,019 22,165 11,700 Other assets 68,330 24 331 3,990 121 12,621 4,495 Total assets acquired 983,005 102,391 116,633 324,620 65,837 815,810 341,067 Accounts payable, accrued expenses and other current liabilities 10,012 440 739 1,194 1,781 22,725 1,540 Long-term debt, including current portion 47,400 — 15,893 — 24,546 413,464 111,610 Deferred income taxes — — — 32,476 — — 927 Asset retirement obligations 15,418 818 5,332 13,073 3,269 4,656 14,105 Total liabilities assumed 72,830 1,258 21,964 46,743 29,596 440,845 128,182 Non-controlling interest 99,739 — 3,762 20,496 2,850 83,310 1,400 Purchase price, net of cash acquired $ 810,436 $ 101,133 $ 90,907 $ 257,381 $ 33,391 $ 291,655 $ 211,485

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property and equipment, net consists of the following: (In thousands) June 30, 2015 December 31, 2014 Renewable energy facilities $ 3,842,300 $ 2,241,728 Less accumulated depreciation - renewable energy facilities (111,667 ) (52,981 ) Property and equipment, net 3,730,633 2,188,747 Construction in progress - renewable energy facilities 198,081 448,392 Total property and equipment $ 3,928,714 $ 2,637,139

Intangibles (Tables)

Intangibles (Tables)	6 Months Ended
	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Gross Carrying Amount and Accumulated Amortization of Other Intangible Asses	The following table presents the gross carrying amount and accumulated amortization of intangibles as of June 30, 2015 : (In thousands, except weighted average amortization period) Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Accumulated Currency Translation Adjustment Net Book Value Revenue contracts 19 years $ 531,115 $ (13,647 ) $ (1,780 ) $ 515,688 The following table presents the gross carrying amount and accumulated amortization of intangibles as of December 31, 2014 : (In thousands, except weighted average amortization period) Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Accumulated Currency Translation Adjustment Net Book Value Revenue contracts 21 years $ 371,765 $ (6,169 ) $ (3,923 ) $ 361,673

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Variable Interest Entities	The carrying amounts and classification of the consolidated VIEs’ assets and liabilities included in the Company's unaudited consolidated balance sheet are as follows: (In thousands) June 30, 2015 December 31, 2014 Current assets $ 77,088 $ 69,955 Noncurrent assets 1,923,042 1,756,276 Total assets $ 2,000,130 $ 1,826,231 Current liabilities $ 116,953 $ 64,324 Noncurrent liabilities 739,135 707,989 Total liabilities $ 856,088 $ 772,313

Long-term Debt (Tables)

Long-term Debt (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Schedule of Debt	Long-term debt consists of the following: (In thousands, except rates) June 30, 2015 December 31, 2014 Interest Type Current Interest Rate % Financing Type Corporate-level long-term debt: Term Loan $ — $ 573,500 Variable 5.3¹ Term debt Senior Notes due 2023 950,000 — Fixed 5.9 Senior notes Project-level long-term debt: Permanent financing 833,848 824,166 (2) 5.9³ Term debt / Senior notes Construction financing 346,220 171,383 Variable 3.2³ Construction debt Financing lease obligations 139,437 126,167 Imputed 6.3³ Financing lease obligations Total principal due for long-term debt and financing lease obligations 2,269,505 1,695,216 6.0³ Less current maturities (322,115 ) (97,412 ) Net unamortized (discount) premium (2,595 ) 1,473 Long-term debt and financing lease obligations, less current portion $ 1,944,795 $ 1,599,277 ——— (1) The Company entered into an interest rate swap agreement fixing the interest rate at 5.33% , which was terminated upon repayment of the Term Loan. (2) Includes variable rate debt and fixed rate debt. As of June 30, 2015 , 67% of this balance had a fixed interest rate and the remaining 33% of this balance had a variable interest rate. The Company has entered into interest rate swap agreements to fix the interest rates of all variable rate permanent project-level debt (see Note 10 . Derivatives ). (3) Represents the weighted average effective interest rate as of June 30, 2015 .
Schedule of Maturities of Long-term Debt	The aggregate amounts of payments on long-term debt including financing lease obligations, and excluding amortization of debt discounts and premiums, due after June 30, 2015 are as follows: (In thousands) Remainder of 2015¹ 2016² 2017 2018 2019 Thereafter Total Maturities of long-term debt as of June 30, 2015 $ 98,159 $ 310,066 $ 37,864 $ 39,374 $ 50,229 $ 1,733,813 $ 2,269,505 ——— (1) The amount of long-term debt due in 2015 includes $65.4 million of construction debt for the U.S. Call Right Projects. (2) The amount of long-term debt due in 2016 includes GBP 172.6 million (USD $271.3 million ) of debt for the Fairwinds & Crundale facilities and the U.K. Call Right Projects.

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	The income tax provision consisted of the following: Three Months Ended June 30, Six Months Ended June 30, (In thousands, except effective tax rate) 2015 2014 2015 2014 Income/(Loss) before income tax expense (benefit) $ 30,348 $ (18,051 ) $ (53,357 ) $ (23,777 ) Income tax expense (benefit) 1,214 (5,318 ) 1,169 (6,875 ) Effective tax rate 4.0 % 29.5 % 2.2 % 28.9 %

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	As of June 30, 2015 and December 31, 2014 , fair values of the following derivative instruments were included in the line items indicated. Fair Value of Derivative Instruments Hedging Contracts Derivatives Not Designated as Hedges (In thousands) Interest Rate Swaps Interest Rate Swaps Foreign Currency Contracts Commodity Contracts Gross Amounts of Assets/Liabilities Recognized Gross Amounts Offset in Consolidated Balance Sheet Net Amounts in Consolidated Balance Sheet As of June 30, 2015 Prepaid expenses and other current assets $ — $ — $ 1,607 $ 9,300 $ 10,907 $ (339 ) $ 10,568 Other assets 269 — 899 33,641 34,809 (446 ) 34,363 Total assets $ 269 $ — $ 2,506 $ 42,941 $ 45,716 $ (785 ) $ 44,931 Accounts payable and other current liabilities $ 807 $ — $ 757 $ — $ 1,564 $ (339 ) $ 1,225 Other long-term liabilities — 971 3,953 — 4,924 (446 ) 4,478 Total liabilities $ 807 $ 971 $ 4,710 $ — $ 6,488 $ (785 ) $ 5,703 As of December 31, 2014 Prepaid expenses and other current assets $ — $ — $ — $ — $ — $ — $ — Other assets — — 1,811 — 1,811 — 1,811 Total assets $ — $ — $ 1,811 $ — $ 1,811 $ — $ 1,811 Accounts payable and other current liabilities $ 1,925 $ 1,279 $ 685 $ — $ 3,889 $ — $ 3,889 Other long-term liabilities — — — — — — — Total liabilities $ 1,925 $ 1,279 $ 685 $ — $ 3,889 $ — $ 3,889
Schedule of Notional Amounts of Outstanding Derivative Positions	As of June 30, 2015 and December 31, 2014 , notional amounts for derivative instruments consisted of the following: Notional Amount as of (In thousands) June 30, 2015 December 31, 2014 Derivatives designated as hedges: Interest rate swaps (USD) $ 48,206 $ 349,213 Derivatives not designated as hedges: Interest rate swaps (USD) 16,538 16,861 Foreign currency contracts (GBP) 112,206 58,710 Foreign currency contracts (CAD) 50,275 25,415 Commodity contracts (MWhs) 2,027 —
Gain (loss) of Derivative Instruments	Gains and losses on derivatives not designated as hedges for the three and six months ended June 30, 2015 and 2014 consisted of the following: Three Months Ended June 30, Six Months Ended June 30, (In thousands) Location of (Gain) Loss Recognized in Income 2015 2014 2015 2014 Interest rate swaps Interest expense, net $ (277 ) $ 153 $ (41 ) $ 723 Foreign currency contracts Loss on foreign currency exchange, net 2,763 902 2,860 902 Commodity contracts Operating revenues, net (6,021 ) — (1,762 ) —
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Gains/losses recognized related to interest rate swaps designated as cash flow hedges for the three and six months ended June 30, 2015 and 2014 consisted of the following: Three Months Ended June 30, Gain Recognized in Other Comprehensive Income (Effective Portion) Location of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) Amount of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) Amount of Loss Recognized in Income (Ineffective Portion and Amount Excluded from Effectiveness Testing) (In thousands) 2015 2014 2015 2014 2015 2014 Interest rate swaps $ (428 ) $ — Interest expense, net $ 350 $ — $ — $ — Six Months Ended June 30, Loss Recognized in Other Comprehensive Income (Effective Portion) Location of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) Amount of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion) Amount of Loss Recognized in Income (Ineffective Portion and Amount Excluded from Effectiveness Testing) (In thousands) 2015 2014 2015 2014 2015 2014 Interest rate swaps $ 1,820 $ — Interest expense, net $ 3,207 $ — $ — $ —

Fair Value of Financial Instr37

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Carrying Amount and Estimated Fair Value of Terra LLC Long-term Debt	The carrying amount and estimated fair value of the Company's long-term debt as of June 30, 2015 and December 31, 2014 is as follows: As of June 30, 2015 As of December 31, 2014 (In thousands) Carrying Amount Fair Value Carrying Amount Fair Value Long-term debt, including current portion $ 2,266,910 $ 2,311,441 $ 1,696,689 $ 1,704,706
Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table summarizes the financial instruments measured at fair value on a recurring basis classified in the fair value hierarchy (Level 1, 2 or 3) based on the inputs used for valuation in the accompanying unaudited consolidated balance sheet: (In thousands) As of June 30, 2015 As of December 31, 2014 Assets Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Foreign currency contracts $ — $ 1,990 $ — $ 1,990 $ — $ 1,811 $ — $ 1,811 Commodity contracts — 42,941 — 42,941 — — — — Total derivative assets $ — $ 44,931 $ — $ 44,931 $ — $ 1,811 $ — $ 1,811 Liabilities Interest rate swaps $ — $ 1,509 $ — $ 1,509 $ — $ 3,204 $ — $ 3,204 Foreign currency contracts — 4,194 — 4,194 — 685 — 685 Total derivative liabilities $ — $ 5,703 $ — $ 5,703 $ — $ 3,889 $ — $ 3,889

Stockholder's Equity (Tables)

Stockholder's Equity (Tables)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Schedule of Stockholders Equity	As of June 30, 2015 , the following shares of the Company were outstanding: Shares: Number Outstanding Shareholder(s) Class A common stock 79,904,190 * Class B common stock 60,364,154 SunEdison Class B1 common stock — Riverstone Total Shares 140,268,344

Stock-based Compensation (Table

Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	The following table presents information regarding outstanding RSAs as of June 30, 2015 , and changes during the six months ended June 30, 2015 : Number of RSAs Outstanding Weighted Average Grant Date Fair Value Per Share Balance at January 1, 2015 4,876,567 $ 1.12 Granted — — Forfeited (132,588 ) 0.68 Modified 66,294 35.05 Balance at June 30, 2015 4,810,273 $ 1.60
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	The following table presents information regarding outstanding RSUs as of June 30, 2015 , and changes during the six months ended June 30, 2015 : Number of RSUs Outstanding Weighted Average Grant Date Fair Value Per Share Balance at January 1, 2015 825,943 $ 27.37 Granted 1,180,000 34.37 Balance at June 30, 2015 2,005,943 $ 31.49
Schedule of Share-based Compensation, Stock Options, Activity	The following table presents information regarding outstanding options as of June 30, 2015 , and changes during the six months ended June 30, 2015 : Number of Options Outstanding Weighted Average Exercise Price Per Share Aggregate Intrinsic Value Balance at January 1, 2015 150,000 $ 29.31 Granted — — Balance at June 30, 2015 150,000 $ 29.31 $ 1,301 Options exercisable at June 30, 2015 37,500 $ 29.31 $ 325

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Basic and diluted earnings (loss) per share for the three and six months ended June 30, 2015 was calculated as follows: (In thousands, except per share amounts) Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 Basic and diluted earnings (loss) per share¹: Net income (loss) attributable to Class A common stockholders $ 17,435 $ (10,681 ) Less: earnings (loss) pertaining to acquired Call Right and operating projects (10,635 ) (10,635 ) Less: dividends paid on Class A shares and participating RSAs (20,082 ) (20,082 ) Undistributed earnings (loss) attributable to Class A shares $ (13,282 ) $ (41,398 ) Weighted-average basic and diluted Class A shares outstanding 57,961 53,874 Distributed earnings per share $ 0.33 $ 0.35 Undistributed loss per share (0.23 ) (0.76 ) Basic and diluted earnings (loss) per share $ 0.10 $ (0.41 ) ——— (1) The computations for diluted earnings (loss) per share for the three and six months ended June 30, 2015 excludes approximately 60,364,154 shares of Class B common stock, 2,445,464 of unvested RSAs, 2,005,943 RSUs and 150,000 options to purchase the Company's shares because the effect would have been anti-dilutive.

Non-controlling Interests (Tabl

Non-controlling Interests (Tables)	6 Months Ended
	Jun. 30, 2015
Noncontrolling Interest [Abstract]
Schedule of Noncontrolling Interest	The following table presents the non-controlling interest balances by entity, reported in stockholders’ equity in the unaudited consolidated balance sheets as of June 30, 2015 and December 31, 2014 : (In thousands) June 30, 2015 December 31, 2014 Non-controlling interests in Terra LLC¹: SunEdison $ 962,791 $ 722,342 Riverstone — 65,376 Total non-controlling interests in Terra LLC 962,791 787,718 Total non-controlling interests in renewable energy facilities 290,692 256,811 Total non-controlling interests $ 1,253,483 $ 1,044,529 ——— (1) Reflects an equity reallocation of $163.0 million due to a quarterly adjustment of capital balances to reflect respective ownership percentages as of the balance sheet date.
Redeemable Noncontrolling Interest	The following table presents the activity of the redeemable non-controlling interest balance reported on the unaudited consolidated balance sheets as of as of June 30, 2015 and December 31, 2014 : Redeemable Non-controlling Interests (In thousands) Capital Accumulated Deficit Total Balance at December 31, 2014 $ 24,338 $ — $ 24,338 Consolidation of redeemable non-controlling interests in acquired projects 1,708 — 1,708 Sale of membership interests in projects 11,842 — 11,842 Distributions (1,287 ) — (1,287 ) Net loss — 1,627 1,627 Balance at June 30, 2015 $ 36,601 $ 1,627 $ 38,228

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following table reflects summarized financial information concerning the Company’s reportable segments for the three and six months ended June 30, 2015 and 2014 : Three Months Three Months Ended June 30, 2015 Ended June 30, 2014 (In thousands) Solar Wind Corporate Total Solar Wind Corporate Total Operating revenues, net $ 95,468 $ 34,578 $ — $ 130,046 $ 22,378 $ — $ — $ 22,378 Depreciation, accretion and amortization 29,537 8,599 — 38,136 4,953 — — 4,953 Other operating costs and expenses 15,821 5,979 30,429 52,229 2,591 — 6,240 8,831 Interest expense, net 19,047 94 16,820 35,961 7,430 — 17,191 24,621 Other non-operating (income) expenses (12,718 ) (1,318 ) (12,592 ) (26,628 ) 3,985 — (1,961 ) 2,024 Income tax expense (benefit)¹ — — 1,214 1,214 — — (5,318 ) (5,318 ) Net income (loss) $ 43,781 $ 21,224 $ (35,871 ) $ 29,134 $ 3,419 $ — $ (16,152 ) $ (12,733 ) Six Months Six Months Ended June 30, 2015 Ended June 30, 2014 (In thousands) Solar Wind Corporate Total Solar Wind Corporate Total Operating revenues, net $ 143,838 $ 56,723 $ — $ 200,561 $ 30,770 $ — $ — $ 30,770 Depreciation, accretion and amortization 55,292 14,735 — 70,027 8,387 — — 8,387 Other operating costs and expenses 30,828 18,992 52,996 102,816 3,563 — 7,830 11,393 Interest expense, net 35,385 851 36,580 72,816 14,430 — 17,718 32,148 Other non-operating (income) expenses (12,292 ) 7,117 13,434 8,259 4,580 — (1,961 ) 2,619 Income tax expense (benefit)¹ — — 1,169 1,169 — — (6,875 ) (6,875 ) Net income (loss) $ 34,625 $ 15,028 $ (104,179 ) $ (54,526 ) $ (190 ) $ — $ (16,712 ) $ (16,902 ) Balance Sheet Total assets² $ 3,924,640 $ 954,988 $ 293,541 $ 5,173,169 $ 3,155,180 $ — $ 514,170 $ 3,669,350 ——— (1) Income tax benefit is not allocated to the Company's Solar and Wind segments. (2) Represents total assets as of June 30, 2015 and December 31, 2014 . Corporate assets include cash and cash equivalents; other current assets; corporate-level debt and related deferred financing costs, net and other assets.

Other Comprehensive Income (L43

Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the changes in each component of accumulated other comprehensive income (loss), net of tax, for the six months ended June 30, 2015 : (In thousands) Foreign Currency Translation Adjustments Hedging Activities Accumulated Other Comprehensive Income (Loss) Balance, December 31, 2014 $ (1,149 ) $ (488 ) $ (1,637 ) Net unrealized gains (losses) arising during the period 577 (1,820 ) (1,243 ) Reclassification of net realized losses into earnings: Interest expense, net — 3,207 3,207 Other comprehensive income $ 577 $ 1,387 $ 1,964 Accumulated other comprehensive (loss) income (572 ) 899 327 Other comprehensive income attributable to non-controlling interests 315 798 1,113 Balance, June 30, 2015 $ (887 ) $ 101 $ (786 )
Comprehensive Income (Loss)	The following tables present each component of other comprehensive income (loss) and the related tax effects for the three and six months ended June 30, 2015 and 2014 : Three Months Ended June 30, 2015 June 30, 2014 (In thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Foreign currency translation adjustments: Net unrealized gains arising during the period $ 3,852 $ — $ 3,852 $ 573 $ — $ 573 Hedging activities: Net unrealized gains arising during the period 428 — 428 — — — Reclassification of net realized losses into earnings 350 — 350 — — — Net change 778 — 778 — — — Other comprehensive income $ 4,630 $ — $ 4,630 $ 573 $ — $ 573 Less: other comprehensive income attributable to non-controlling interests, net of tax 2,807 — Other comprehensive income attributable to Class A stockholders $ 1,823 $ 573 Six Months Ended June 30, 2015 June 30, 2014 (In thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Foreign currency translation adjustments: Net unrealized gains arising during the period $ 577 $ — $ 577 $ 573 $ — $ 573 Hedging activities: Net unrealized losses arising during the period (1,820 ) — (1,820 ) — — — Reclassification of net realized losses into earnings 3,207 — 3,207 — — — Net change 1,387 — 1,387 — — — Other comprehensive income $ 1,964 $ — $ 1,964 $ 573 $ — $ 573 Less: other comprehensive income attributable to non-controlling interests, net of tax 1,113 — Other comprehensive income attributable to Class A stockholders $ 851 $ 573

Transactions Between Entities44

Transactions Between Entities Under Common Control - Recast of Statements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 390,632	$ 16,016	$ 390,632	$ 16,016	$ 468,554	$ 1,044
Accounts receivable, including consolidated variable interest entities of $36,228 and $16,921 in 2015 and 2014, respectively	96,938		96,938		32,036
Prepaid expenses and other current assets	31,061		31,061		22,637
Property and equipment, net	3,928,714		3,928,714		2,637,139
Deferred financing costs, net	52,985		52,985		42,741
Total assets	5,173,169	3,669,350	5,173,169	3,669,350	3,669,350
Current portion of long-term debt	322,115		322,115		97,412
Accounts payable, accrued expenses and other current liabilities	99,832		99,832		83,437
Due to SunEdison and affiliates, net	28,062		28,062		186,435
Deferred revenue (short-term)	13,014		13,014		24,264
Long-term debt and financing lease obligations, less current portion	1,944,795		1,944,795		1,599,277
Asset retirement obligations, including consolidated variable interest entities of $46,621 and $32,181 in 2015 and 2014, respectively	145,877		145,877		78,175
Deferred revenue, including consolidated variable interest entities of $63,231 and $51,943 in 2015 and 2014, respectively	76,814		76,814		52,214
Deferred income taxes	7,108		7,108		7,877
Total liabilities	2,642,715		2,642,715		2,129,091
Statement of Cash Flows [Abstract]
Depreciation, accretion and amortization	38,136	4,953	70,027	8,387
Deferred taxes			1,112	(6,680)
Accounts receivable			(54,889)	(14,174)
Prepaid expenses and other current assets			8,911	(9,526)
Accounts payable, accrued interest, and other current liabilities			11,273	14,335
Deferred revenue			14,323	22,349
Cash paid to SunEdison and third parties for renewable energy facility construction			(351,252)	(524,105)
Due to SunEdison and affiliates, net			(233,550)	3,313
Borrowings of project-level long-term debt			276,529	551,610
Principal payments on project-level long-term debt			(133,955)	(42,923)
Payment of deferred financing costs			(35,392)	(23,089)
Net increase in cash and cash equivalents			(77,526)	14,872
Effect of exchange rate changes on cash and cash equivalents			(396)	100
Cash and cash equivalents at end of period	390,632	16,016	390,632	16,016	468,554	$ 1,044
Income Statement [Abstract]
Operating revenues, net	130,046	22,378	200,561	30,770
Cost of operations	18,409	1,408	35,229	1,890
Cost of operations - affiliate	4,174	825	7,817	1,217
Depreciation, accretion and amortization	38,136	4,953	70,027	8,387
Interest expense, net	35,961	24,621	72,816	32,148
Net income (loss)	$ 29,134	(12,733)	$ (54,526)	(16,902)
Previously Reported
Statement of Financial Position [Abstract]
Cash and cash equivalents		16,016		16,016	468,554
Accounts receivable, including consolidated variable interest entities of $36,228 and $16,921 in 2015 and 2014, respectively					31,986
Prepaid expenses and other current assets					22,620
Property and equipment, net					2,554,904
Deferred financing costs, net					42,113
Current portion of long-term debt					84,104
Accounts payable, accrued expenses and other current liabilities					82,605
Due to SunEdison and affiliates, net					153,052
Deferred revenue (short-term)					21,989
Long-term debt and financing lease obligations, less current portion					1,568,517
Asset retirement obligations, including consolidated variable interest entities of $46,621 and $32,181 in 2015 and 2014, respectively					76,111
Deferred revenue, including consolidated variable interest entities of $63,231 and $51,943 in 2015 and 2014, respectively					52,081
Deferred income taxes					7,702
Statement of Cash Flows [Abstract]
Depreciation, accretion and amortization				8,001
Deferred taxes				(6,875)
Accounts receivable				(14,034)
Prepaid expenses and other current assets				(9,526)
Accounts payable, accrued interest, and other current liabilities				13,266
Deferred revenue				22,349
Cash paid to SunEdison and third parties for renewable energy facility construction				(485,756)
Due to SunEdison and affiliates, net				0
Borrowings of project-level long-term debt				518,737
Principal payments on project-level long-term debt				(42,923)
Payment of deferred financing costs				(22,421)
Net increase in cash and cash equivalents				14,872
Effect of exchange rate changes on cash and cash equivalents				100
Cash and cash equivalents at end of period		16,016		16,016	468,554
Income Statement [Abstract]
Operating revenues, net				30,077
Cost of operations				1,846
Cost of operations - affiliate				1,137
Depreciation, accretion and amortization				8,001
Interest expense, net				31,253
Acquired Call Right and Operating Projects
Statement of Financial Position [Abstract]
Cash and cash equivalents		0		0	0
Accounts receivable, including consolidated variable interest entities of $36,228 and $16,921 in 2015 and 2014, respectively					50
Prepaid expenses and other current assets					17
Property and equipment, net					82,235
Deferred financing costs, net					628
Total assets					82,930
Current portion of long-term debt					13,308
Accounts payable, accrued expenses and other current liabilities					832
Due to SunEdison and affiliates, net					33,383
Deferred revenue (short-term)					2,275
Long-term debt and financing lease obligations, less current portion					30,760
Asset retirement obligations, including consolidated variable interest entities of $46,621 and $32,181 in 2015 and 2014, respectively					2,064
Deferred revenue, including consolidated variable interest entities of $63,231 and $51,943 in 2015 and 2014, respectively					133
Deferred income taxes					175
Total liabilities					82,930
Statement of Cash Flows [Abstract]
Depreciation, accretion and amortization				386
Deferred taxes				195
Accounts receivable				(140)
Prepaid expenses and other current assets				0
Accounts payable, accrued interest, and other current liabilities				1,069
Deferred revenue				0
Cash paid to SunEdison and third parties for renewable energy facility construction				(38,349)
Due to SunEdison and affiliates, net				3,313
Borrowings of project-level long-term debt				32,873
Principal payments on project-level long-term debt				0
Payment of deferred financing costs				(668)
Net increase in cash and cash equivalents				0
Effect of exchange rate changes on cash and cash equivalents				0
Cash and cash equivalents at end of period		$ 0		0	$ 0
Income Statement [Abstract]
Operating revenues, net				693
Cost of operations				44
Cost of operations - affiliate				80
Depreciation, accretion and amortization				386
Interest expense, net				895
Net income (loss)				$ (712)

Transactions Between Entities45

Transactions Between Entities Under Common Control - Summary of Acquisitions (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)power_plantMW	Jun. 30, 2014USD ($)
Business Acquisition [Line Items]
Nameplate Capacity (MW) | MW	313
Number of Sites | power_plant	68
Initial Cash Paid	$ 233,550	$ (3,313)
Estimated Cash Due to SunEdison	75,889
Debt Transferred	$ 283,564
U.S. | Distributed Generation
Business Acquisition [Line Items]
Nameplate Capacity (MW) | MW	51.7
Number of Sites | power_plant	46
Initial Cash Paid	$ 76,371
Estimated Cash Due to SunEdison	10,815
Debt Transferred	$ 4,460
U.S. | Utility
Business Acquisition [Line Items]
Nameplate Capacity (MW) | MW	47
Number of Sites | power_plant	8
Initial Cash Paid	$ 15,396
Estimated Cash Due to SunEdison	55,150
Debt Transferred	$ 60,903
U.K. | Utility
Business Acquisition [Line Items]
Nameplate Capacity (MW) | MW	214.3
Number of Sites | power_plant	14
Initial Cash Paid	$ 141,783
Estimated Cash Due to SunEdison	9,924
Debt Transferred	$ 218,201

Transactions Between Entities46

Transactions Between Entities Under Common Control - Narrative (Details) - Jun. 30, 2015 $ in Millions	USD ($)power_plantMW
Acquisition of Call Right Projects [Line Items]
Number of Sites | power_plant	68
Nameplate capacity (MW) | MW	313
Affiliated Entity
Acquisition of Call Right Projects [Line Items]
Initial Cash Paid	$ 181.2
Distributions	14.6
Affiliated Entity | Facilities Not Yet Achieved Commercial Operations
Acquisition of Call Right Projects [Line Items]
Initial Cash Paid	$ 52.4

Transactions Between Entities47

Transactions Between Entities Under Common Control - Summary of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Operating revenues, net	$ 130,046	$ 22,378	$ 200,561	$ 30,770
Operating expenses	90,365	13,784	172,843	19,780
Operating income	39,681	8,594	27,718	10,990
Interest expense, net	35,961	24,621	72,816	32,148
Other income	(9,333)	(26,645)	(81,075)	(34,767)
Net income (loss)	$ 29,134	$ (12,733)	(54,526)	$ (16,902)
Call Right Projects
Business Acquisition [Line Items]
Operating revenues, net			14,324
Operating expenses			7,610
Operating income			6,714
Interest expense, net			3,496
Other income			10,315
Net income (loss)			$ 13,533

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) CAD in Millions

Jun. 30, 2015CADMW

Jun. 26, 2015USD ($)MW

Dec. 31, 2015USD ($)power_plantMW

Jun. 30, 2015USD ($)

Jun. 30, 2014USD ($)

Jun. 30, 2015USD ($)power_plant

Jun. 30, 2014USD ($)

Dec. 31, 2014

Jul. 20, 2015USD ($)

Jul. 01, 2015USD ($)

Jun. 30, 2015USD ($)MW

Jan. 29, 2015USD ($)MW

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

313

313

Operating revenues, net

$ 130,046,000

$ 22,378,000

$ 200,561,000

$ 30,770,000

Net income (loss)

$ 29,134,000

$ (12,733,000)

(54,526,000)

(16,902,000)

Acquisition costs including amounts for affiliates

$ 21,000,000

$ 1,200,000

Weighted average | Revenue contracts

Business Acquisition [Line Items]

Weighted Average Amortization Period

19 years

21 years

Minimum | Revenue contracts

Business Acquisition [Line Items]

Estimated useful lives of intangible assets (in years)

1 year

Maximum | Revenue contracts

Business Acquisition [Line Items]

Estimated useful lives of intangible assets (in years)

24 years

First Wind

Business Acquisition [Line Items]

Purchase price, net of acquired cash

$ 810,436,000

$ 810,400,000

Adjustment to fixed assets

$ 18,900,000

Adjustment to intangibles

10,500,000

Adjust to debt

12,400,000

Adjustment to noncontrolling interest

$ 21,100,000

First Wind | Energy Equipment

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

521.1

First Wind | Wind Power Systems

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

500

First Wind | Renewable energy facilities

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

21.1

Northern Lights

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

25.7

25.7

Purchase price, net of acquired cash

CAD 125.4

$ 101,133,000

Northern Lights | Weighted average | Revenue contracts

Business Acquisition [Line Items]

Weighted Average Amortization Period

18 years

Other Solar Generation Facilities

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

37.6

37.6

Purchase price, net of acquired cash

$ 90,900,000

Number of power plants | power_plant

66

Debt assumed

$ 15,900,000

Other Solar Generation Facilities | Weighted average | Revenue contracts

Business Acquisition [Line Items]

Weighted Average Amortization Period

15 years

Acquired Projects

Business Acquisition [Line Items]

Operating revenues, net

$ 60,700,000

Net income (loss)

$ 20,100,000

Atlantic Power

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

521

Purchase price for acquisition

$ 347,200,000

Atlantic Power | Weighted average | Revenue contracts

Business Acquisition [Line Items]

Weighted Average Amortization Period

18 years

Atlantic Power | Maximum | Revenue contracts | TerraForm Private Warehouse

Business Acquisition [Line Items]

Weighted Average Amortization Period

7 years

Invenergy | Subsequent Event

Business Acquisition [Line Items]

Aggregate principal amount

$ 1,160,000,000

Invenergy | Scenario, Forecast

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

930

Number of power plants | power_plant

2

Debt assumed

$ 818,000,000

Consideration transferred

2,000,000,000

Aggregate principal amount

$ 860,000,000

Noncontrolling ownership

9.90%

Invenergy | Acquired Portfolio | Scenario, Forecast

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

265

Invenergy | Warehouse Portfolio | Scenario, Forecast

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

665

Invenergy | Weighted average | Revenue contracts | Scenario, Forecast

Business Acquisition [Line Items]

Weighted Average Amortization Period

19 years

Vivint Solar | Scenario, Forecast | Subsequent Event

Business Acquisition [Line Items]

Nameplate capacity (MW) | MW

523

Purchase price for acquisition

$ 922,000,000

Consideration transferred

$ 2,200,000,000

Aggregate principal amount

$ 960,000,000

Acquisitions - Pro Forma table

Acquisitions - Pro Forma table (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Business Combinations [Abstract]
Operating revenues	$ 217,276	$ 95,076
Net loss (income)	$ 32,684	$ 13,298

Acquisitions - Acquisition Pric

Acquisitions - Acquisition Price Allocation table (Details) $ in Thousands, CAD in Millions	Jun. 30, 2015CAD	Jun. 30, 2015USD ($)	Jan. 29, 2015USD ($)
First Wind
Business Acquisition [Line Items]
Accounts receivable		$ 8,667
Property and equipment		784,178
Intangible assets		115,200
Deferred income taxes		0
Restricted cash		6,630
Other assets		68,330
Total assets acquired		983,005
Accounts payable, accrued expenses and other current liabilities		10,012
Long-term debt, including current portion		47,400
Deferred income taxes		0
Asset retirement obligations		15,418
Total liabilities assumed		72,830
Non-controlling interest		99,739
Purchase price, net of cash acquired		810,436	$ 810,400
Northern Lights
Business Acquisition [Line Items]
Accounts receivable		1,284
Property and equipment		75,218
Intangible assets		25,865
Deferred income taxes		0
Restricted cash		0
Other assets		24
Total assets acquired		102,391
Accounts payable, accrued expenses and other current liabilities		440
Long-term debt, including current portion		0
Deferred income taxes		0
Asset retirement obligations		818
Total liabilities assumed		1,258
Non-controlling interest		0
Purchase price, net of cash acquired	CAD 125.4	101,133
2015 Preliminary Other Acquisitions
Business Acquisition [Line Items]
Accounts receivable		2,959
Property and equipment		80,939
Intangible assets		31,577
Deferred income taxes		0
Restricted cash		827
Other assets		331
Total assets acquired		116,633
Accounts payable, accrued expenses and other current liabilities		739
Long-term debt, including current portion		15,893
Deferred income taxes		0
Asset retirement obligations		5,332
Total liabilities assumed		21,964
Non-controlling interest		3,762
Purchase price, net of cash acquired		90,907
Capital Dynamics
Business Acquisition [Line Items]
Accounts receivable		2,603
Property and equipment		219,981
Intangible assets		71,453
Deferred income taxes		26,578
Restricted cash		15
Other assets		3,990
Total assets acquired		324,620
Accounts payable, accrued expenses and other current liabilities		1,194
Long-term debt, including current portion		0
Deferred income taxes		32,476
Asset retirement obligations		13,073
Total liabilities assumed		46,743
Non-controlling interest		20,496
Purchase price, net of cash acquired		257,381
2014 Preliminary Other Acquisitions
Business Acquisition [Line Items]
Accounts receivable		4,092
Property and equipment		42,001
Intangible assets		16,604
Deferred income taxes		0
Restricted cash		3,019
Other assets		121
Total assets acquired		65,837
Accounts payable, accrued expenses and other current liabilities		1,781
Long-term debt, including current portion		24,546
Deferred income taxes		0
Asset retirement obligations		3,269
Total liabilities assumed		29,596
Non-controlling interest		2,850
Purchase price, net of cash acquired		33,391
Mt. Signal
Business Acquisition [Line Items]
Accounts receivable		11,687
Property and equipment		649,570
Intangible assets		119,767
Deferred income taxes		0
Restricted cash		22,165
Other assets		12,621
Total assets acquired		815,810
Accounts payable, accrued expenses and other current liabilities		22,725
Long-term debt, including current portion		413,464
Deferred income taxes		0
Asset retirement obligations		4,656
Total liabilities assumed		440,845
Non-controlling interest		83,310
Purchase price, net of cash acquired		291,655
2014 Finalized Other Acquisitions
Business Acquisition [Line Items]
Accounts receivable		5,400
Property and equipment		211,796
Intangible assets		107,676
Deferred income taxes		0
Restricted cash		11,700
Other assets		4,495
Total assets acquired		341,067
Accounts payable, accrued expenses and other current liabilities		1,540
Long-term debt, including current portion		111,610
Deferred income taxes		927
Asset retirement obligations		14,105
Total liabilities assumed		128,182
Non-controlling interest		1,400
Purchase price, net of cash acquired		$ 211,485

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Property, Plant and Equipment, Net, by Type [Abstract]
Total property and equipment	$ 3,928,714		$ 3,928,714		$ 2,637,139
Depreciation, accretion and amortization	32,700	$ 4,600	57,800	$ 7,700
Capitalized interest costs and amortization of deferred financing costs	4,100	$ 6,100	4,800	$ 8,200
Renewable energy facilities
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment - gross	3,842,300		3,842,300		2,241,728
Less accumulated depreciation - renewable energy facilities	(111,667)		(111,667)		(52,981)
Total property and equipment	3,730,633		3,730,633		2,188,747
Construction in progress - renewable energy facilities
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment - gross	198,081		198,081		$ 448,392
Construction in progress	$ 198,100		$ 198,100

Intangibles (Details)

Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Amortization of intangible assets			$ 5,023	$ 771
Depreciation, accretion and amortization	$ 38,136	$ 4,953	70,027	8,387
Revenue contracts
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross Carrying Amount	531,115		531,115		$ 371,765
Accumulated Amortization	(13,647)		(13,647)		(6,169)
Accumulated Currency Translation Adjustment			(1,780)		(3,923)
Net Book Value	515,688		515,688		$ 361,673
Amortization of intangible assets	8,800	$ 800	14,100	$ 800
Amortization of intangibles recorded as a reduction of revenue	5,400		5,000
Depreciation, accretion and amortization	$ 3,400		$ 9,100
Revenue contracts | Weighted average
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Weighted Average Amortization Period			19 years		21 years
Revenue contracts | Minimum
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Estimated useful lives of intangible assets (in years)			1 year
Revenue contracts | Maximum
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Estimated useful lives of intangible assets (in years)			24 years

Variable Interest Entities (Det

Variable Interest Entities (Details) - Consolidated variable interest entities where Terra LLC is primary beneficiary $ in Thousands	Jun. 30, 2015USD ($)entity	Dec. 31, 2014USD ($)entity
Variable Interest Entity [Line Items]
Number of variable interest entities of which the company is the primary beneficiary of | entity	12	9
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Current assets	$ 77,088	$ 69,955
Noncurrent assets	1,923,042	1,756,276
Total assets	2,000,130	1,826,231
Current liabilities	116,953	64,324
Noncurrent liabilities	739,135	707,989
Total liabilities	$ 856,088	$ 772,313

Long-term Debt - Debt Schedule

Long-term Debt - Debt Schedule table (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 11, 2015	Jan. 28, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Effective interest	6.00%
Total principal due for long-term debt and financing lease obligations	$ 2,269,505			$ 1,695,216
Less current maturities	(322,115)			(97,412)
Net unamortized (discount) premium	(2,595)			1,473
Long-term debt and financing lease obligations, less current portion	$ 1,944,795			1,599,277
Permanent Financing
Debt Instrument [Line Items]
Effective interest	5.90%
Total principal due for long-term debt and financing lease obligations	$ 833,848			824,166
Debt at variable rate	33.00%
Debt at fixed rate	67.00%
Permanent Financing | Senior Notes due 2023
Debt Instrument [Line Items]
Stated interest rate (in percent)	5.90%	5.875%	5.875%
Total principal due for long-term debt and financing lease obligations	$ 950,000			0
Permanent Financing | Permanent Financing
Debt Instrument [Line Items]
Fixed effective interest rate	5.30%
Total principal due for long-term debt and financing lease obligations	$ 0		$ 573,500	573,500
Construction financing
Debt Instrument [Line Items]
Effective interest	3.20%
Total principal due for long-term debt and financing lease obligations	$ 346,220			171,383
Financing lease obligations
Debt Instrument [Line Items]
Effective interest	6.30%
Total principal due for long-term debt and financing lease obligations	$ 139,437			$ 126,167

Long-term Debt - Narrative (Det

Long-term Debt - Narrative (Details) CAD in Millions

Jul. 17, 2015USD ($)

Jun. 30, 2015CAD

Jun. 11, 2015USD ($)

May. 22, 2015USD ($)

Jan. 29, 2015USD ($)

Jan. 28, 2015USD ($)

Jun. 30, 2015USD ($)

Jun. 30, 2014USD ($)

Dec. 31, 2015USD ($)

Jul. 20, 2015USD ($)

Jul. 13, 2015USD ($)

Jul. 01, 2015USD ($)

Jun. 30, 2015USD ($)

May. 01, 2015USD ($)

Mar. 31, 2015USD ($)

Dec. 31, 2014USD ($)

Debt Instrument [Line Items]

Total principal due for long-term debt and financing lease obligations

$ 2,269,505,000

$ 1,695,216,000

Gain on extinguishment of debt

$ 8,652,000

$ 1,945,000

Subsequent Event | Invenergy

Debt Instrument [Line Items]

Aggregate principal amount

$ 1,160,000,000

Terminated line of credit

$ 300,000,000

Duke Operating

Debt Instrument [Line Items]

Gain on extinguishment of debt

$ (11,400,000)

Extinguishment of obligation

$ 31,500,000

Bull Hill Financing Due 2023

Debt Instrument [Line Items]

Amount of financing obligation

47,400,000

Scenario, Forecast | Invenergy

Debt Instrument [Line Items]

Aggregate principal amount

$ 860,000,000

Scenario, Forecast | Subsequent Event | Vivint Solar

Debt Instrument [Line Items]

Aggregate principal amount

$ 960,000,000

Line of Credit

Debt Instrument [Line Items]

Bridge facility

$ 515,000,000

Line of Credit

Debt Instrument [Line Items]

Gain on extinguishment of debt

1,300,000

Secured Debt

Debt Instrument [Line Items]

Gain on extinguishment of debt

12,000,000

Secured Debt | First Wind

Debt Instrument [Line Items]

Gain on extinguishment of debt

$ 6,400,000

Line of Credit | Revolving Credit Facility

Debt Instrument [Line Items]

Aggregate principal amount

$ 550,000,000

$ 650,000,000

Ability to increase commitments

$ 725,000,000

$ 100,000,000

Required prepayment percentage of disallowed indebtedness

100.00%

Percentage of borrower's domestic entities' equity as collateral

100.00%

Percentage of borrower's foreign entities' equity as collateral

65.00%

Line of Credit | Revolving Credit Facility | Subsequent Event

Debt Instrument [Line Items]

Aggregate principal amount

$ 725,000,000

Ability to increase commitments

$ 75,000,000

Line of Credit | Revolving Credit Facility | Eurodollar

Debt Instrument [Line Items]

Basis spread on variable rate (in percent)

2.50%

Line of Credit | Revolving Credit Facility | Base Rate

Debt Instrument [Line Items]

Basis spread on variable rate (in percent)

1.50%

Line of Credit | Revolving Credit Facility | Scenario, Forecast | Eurodollar | Minimum

Debt Instrument [Line Items]

Basis spread on variable rate (in percent)

2.25%

Line of Credit | Revolving Credit Facility | Scenario, Forecast | Eurodollar | Maximum

Debt Instrument [Line Items]

Basis spread on variable rate (in percent)

2.75%

Line of Credit | Revolving Credit Facility | Scenario, Forecast | Base Rate | Minimum

Debt Instrument [Line Items]

Basis spread on variable rate (in percent)

1.25%

Line of Credit | Revolving Credit Facility | Scenario, Forecast | Base Rate | Maximum

Debt Instrument [Line Items]

Basis spread on variable rate (in percent)

1.75%

Secured Debt

Debt Instrument [Line Items]

Total principal due for long-term debt and financing lease obligations

833,848,000

824,166,000

Secured Debt | Senior Notes due 2023

Debt Instrument [Line Items]

Total principal due for long-term debt and financing lease obligations

$ 950,000,000

0

Face amount of debt instrument

$ 150,000,000

$ 800,000,000

Stated interest rate (in percent)

5.90%

5.875%

5.875%

5.90%

Proceeds from debt issuance as a percentage of face value

101.50%

99.214%

Secured Debt | SunE Perpetual Lindsay Due in 2015

Debt Instrument [Line Items]

Long-term debt, amount outstanding

CAD 47.7

$ 38,600,000

Secured Debt | 6.125% Senior Notes Due 2025 | Subsequent Event

Debt Instrument [Line Items]

Face amount of debt instrument

$ 300,000,000

Stated interest rate (in percent)

6.125%

Proceeds from debt issuance as a percentage of face value

100.00%

Secured Debt | Secured Debt

Debt Instrument [Line Items]

Total principal due for long-term debt and financing lease obligations

$ 573,500,000

$ 0

$ 573,500,000

Long-term Debt - Debt Maturitie

Long-term Debt - Debt Maturities table (Details) - Credit Facility [Domain] $ in Thousands, £ in Millions	Jun. 30, 2015USD ($)	Jun. 30, 2015GBP (£)	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Remainder of 2015	$ 98,159
2,016	310,066
2,017	37,864
2,018	39,374
2,019	50,229
Thereafter	1,733,813
Total	2,269,505		$ 1,695,216
Secured Debt
Debt Instrument [Line Items]
Total	833,848		$ 824,166
Secured Debt | United States (US) Call Right Projects
Debt Instrument [Line Items]
Long-term debt, amount outstanding	65,400
Secured Debt | Fairwinds and Crundale and Call Right Projects
Debt Instrument [Line Items]
Long-term debt, amount outstanding	$ 271,300	£ 172.6

Income Taxes - Effective tax ra

Income Taxes - Effective tax rate table (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income/(Loss) before income tax expense (benefit)	$ 30,348	$ (18,051)	$ (53,357)	$ (23,777)
Income tax expense (benefit)	$ 1,214	$ (5,318)	$ 1,169	$ (6,875)
Effective tax rate	4.00%	29.50%	2.20%	28.90%

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - Jun. 30, 2015	Total
Income Taxes [Line Items]
Ownership percentage of Terra LLC	57.00%
Statutory tax rate percentage	35.00%
SunEdison
Income Taxes [Line Items]
Ownership percentage by other entities	43.00%

Derivatives - Fair Value of Der

Derivatives - Fair Value of Derivatives table (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Assets	$ 45,716	$ 1,811
Derivative asset, offset	(785)	0
Derivative Asset	44,931	1,811
Liabilities	6,488	3,889
Derivative liability, offset	(785)	0
Derivative Liability	5,703	3,889
Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Assets	10,907	0
Derivative asset, offset	(339)	0
Derivative Asset	10,568	0
Other assets
Derivatives, Fair Value [Line Items]
Assets	34,809	1,811
Derivative asset, offset	(446)	0
Derivative Asset	34,363	1,811
Accounts payable and other current liabilities
Derivatives, Fair Value [Line Items]
Liabilities	1,564	3,889
Derivative liability, offset	(339)	0
Derivative Liability	1,225	3,889
Other long-term liabilities
Derivatives, Fair Value [Line Items]
Liabilities	4,924	0
Derivative liability, offset	(446)	0
Derivative Liability	4,478	0
Interest rate swaps | Hedging Contracts
Derivatives, Fair Value [Line Items]
Assets	269	0
Liabilities	807	1,925
Interest rate swaps | Hedging Contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Assets	0	0
Interest rate swaps | Hedging Contracts | Other assets
Derivatives, Fair Value [Line Items]
Assets	269	0
Interest rate swaps | Hedging Contracts | Accounts payable and other current liabilities
Derivatives, Fair Value [Line Items]
Liabilities	807	1,925
Interest rate swaps | Hedging Contracts | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Liabilities	0	0
Interest rate swaps | Derivatives Not Designated as Hedges
Derivatives, Fair Value [Line Items]
Assets	0	0
Liabilities	971	1,279
Interest rate swaps | Derivatives Not Designated as Hedges | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Assets	0	0
Interest rate swaps | Derivatives Not Designated as Hedges | Other assets
Derivatives, Fair Value [Line Items]
Assets	0	0
Interest rate swaps | Derivatives Not Designated as Hedges | Accounts payable and other current liabilities
Derivatives, Fair Value [Line Items]
Liabilities	0	1,279
Interest rate swaps | Derivatives Not Designated as Hedges | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Liabilities	971	0
Foreign Currency Contracts | Derivatives Not Designated as Hedges
Derivatives, Fair Value [Line Items]
Assets	2,506	1,811
Liabilities	4,710	685
Foreign Currency Contracts | Derivatives Not Designated as Hedges | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Assets	1,607	0
Foreign Currency Contracts | Derivatives Not Designated as Hedges | Other assets
Derivatives, Fair Value [Line Items]
Assets	899	1,811
Foreign Currency Contracts | Derivatives Not Designated as Hedges | Accounts payable and other current liabilities
Derivatives, Fair Value [Line Items]
Liabilities	757	685
Foreign Currency Contracts | Derivatives Not Designated as Hedges | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Liabilities	3,953	0
Commodity contracts | Derivatives Not Designated as Hedges
Derivatives, Fair Value [Line Items]
Assets	42,941	0
Liabilities	0	0
Commodity contracts | Derivatives Not Designated as Hedges | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Assets	9,300	0
Commodity contracts | Derivatives Not Designated as Hedges | Other assets
Derivatives, Fair Value [Line Items]
Assets	33,641	0
Commodity contracts | Derivatives Not Designated as Hedges | Accounts payable and other current liabilities
Derivatives, Fair Value [Line Items]
Liabilities	0	0
Commodity contracts | Derivatives Not Designated as Hedges | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Liabilities	$ 0	$ 0

Derivatives - Notional table (D

Derivatives - Notional table (Details) £ in Thousands, MWh in Thousands, CAD in Thousands, $ in Thousands	Jun. 30, 2015CADMWh	Jun. 30, 2015USD ($)MWh	Jun. 30, 2015GBP (£)MWh	Dec. 31, 2014CADMWh	Dec. 31, 2014USD ($)MWh	Dec. 31, 2014GBP (£)MWh
Interest rate swaps | Hedging Contracts
Derivative [Line Items]
Notional amount		$ 48,206			$ 349,213
Interest rate swaps | Derivatives not designated as hedges
Derivative [Line Items]
Notional amount		$ 16,538			$ 16,861
Foreign Currency Contracts | Derivatives not designated as hedges
Derivative [Line Items]
Notional amount	CAD 50,275		£ 112,206	CAD 25,415		£ 58,710
Commodity contracts | Derivatives not designated as hedges
Derivative [Line Items]
Nonmonetary notional amount | MWh	2,027	2,027	2,027	0	0	0

Derivatives - Gain_Loss table (

Derivatives - Gain/Loss table (Details) - Derivatives not designated as hedges - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest expense, net | Interest rate swaps
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (277)	$ 153	$ (41)	$ 723
Loss on foreign currency exchange, net | Foreign Currency Contracts
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	2,763	902	2,860	902
Operating revenues, net | Commodity contracts
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (6,021)	$ 0	$ (1,762)	$ 0

Derivatives - Interest Rate Swa

Derivatives - Interest Rate Swaps Designated as Cash Flow Hedges table (Details) - Interest expense, net - Interest rate swaps - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative [Line Items]
Gain Recognized in Other Comprehensive Income (Effective Portion)	$ (428)	$ 0	$ 1,820	$ 0
Amount of Loss Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion)	350	0	3,207	0
Amount of Loss Recognized in Income (Ineffective Portion and Amount Excluded from Effectiveness Testing)	$ 0	$ 0	$ 0	$ 0

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Letter of Credit | Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Collateral already posted	$ 18	$ 0
Secured Debt | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount expected to be reclassified into earnings	$ 0.8

Fair Value of Financial Instr64

Fair Value of Financial Instruments - Debt and Levels 1-3 tables (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Long-term debt, including current portion
Carrying Amount	$ 2,266,910	$ 1,696,689
Assets and Liabilities
Assets	45,716	1,811
Liabilities	6,488	3,889
Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	44,931	1,811
Liabilities	5,703	3,889
Interest rate swaps | Fair Value, Measurements, Recurring
Assets and Liabilities
Liabilities	1,509	3,204
Foreign Currency Contracts | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	1,990	1,811
Liabilities	4,194	685
Commodity contracts | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	42,941	0
Level 1 | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	0	0
Liabilities	0	0
Level 1 | Interest rate swaps | Fair Value, Measurements, Recurring
Assets and Liabilities
Liabilities	0	0
Level 1 | Foreign Currency Contracts | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	0	0
Liabilities	0	0
Level 1 | Commodity contracts | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	0	0
Level 2
Long-term debt, including current portion
Fair Value	2,311,441	1,704,706
Level 2 | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	44,931	1,811
Liabilities	5,703	3,889
Level 2 | Interest rate swaps | Fair Value, Measurements, Recurring
Assets and Liabilities
Liabilities	1,509	3,204
Level 2 | Foreign Currency Contracts | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	1,990	1,811
Liabilities	4,194	685
Level 2 | Commodity contracts | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	42,941	0
Level 3 | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	0	0
Liabilities	0	0
Level 3 | Interest rate swaps | Fair Value, Measurements, Recurring
Assets and Liabilities
Liabilities	0	0
Level 3 | Foreign Currency Contracts | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	0	0
Liabilities	0	0
Level 3 | Commodity contracts | Fair Value, Measurements, Recurring
Assets and Liabilities
Assets	$ 0	$ 0

Stockholder's Equity - Narrativ

Stockholder's Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 24, 2015	Jan. 22, 2015	Jun. 30, 2015	Jun. 30, 2014	May. 07, 2015
Class of Stock [Line Items]
Proceeds from issuance of Class A common stock			$ 921,610	$ 0
Ownership percentage by parent			57.00%
SunEdison
Class of Stock [Line Items]
Ownership percentage by other entities			43.00%
Class A Common Stock
Class of Stock [Line Items]
New issuances of common stock (in shares)	18,112,500	13,800,000
Proceeds from issuance of Class A common stock	$ 667,600	$ 390,600
Dividends payable per share					$ 0.325
Dividends payable (annualized basis) per share					$ 1.30
Class A Common Stock | Over-Allotment Option
Class of Stock [Line Items]
New issuances of common stock (in shares)	2,362,500	1,800,000
Class B common stock
Class of Stock [Line Items]
Payments for repurchase of common stock	$ 87,100	$ 50,900
Units repurchased (in shares)	2,362,500	1,800,000

Stockholder's Equity - Shares O

Stockholder's Equity - Shares Outstanding Table (Details) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Class of Stock [Line Items]
Common stock outstanding (shares)	140,268,344	140,268,344
Restricted Stock Award
Class of Stock [Line Items]
Shares excluded from calculation (shares)	2,445,464	2,445,464
Class A Common Stock
Class of Stock [Line Items]
Common stock outstanding (shares)	79,904,000	79,904,000	42,218,000
Class B common stock
Class of Stock [Line Items]
Common stock outstanding (shares)	60,364,000	60,364,000	64,526,000
Class B1 common stock
Class of Stock [Line Items]
Common stock outstanding (shares)	0	0	5,840,000
Multiple Shareholders | Class A Common Stock
Class of Stock [Line Items]
Common stock outstanding (shares)	79,904,190	79,904,190
SunEdison | Class B common stock
Class of Stock [Line Items]
Common stock outstanding (shares)	60,364,154	60,364,154
Riverstone | Class B1 common stock
Class of Stock [Line Items]
Common stock outstanding (shares)	0	0

Stock-based Compensation - Narr

Stock-based Compensation - Narrative (Details) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Millions	Total	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price ($ per share)	$ 37.98	$ 37.98
Unrecognized compensation expense on options	$ 0.3	$ 0.3
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance	1,620,398	1,620,398
Employee Stock Option and Restricted Stock | General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 2.3	$ 7.5
Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	0.1	2.6
Unrecognized compensation cost	0.9	$ 0.9
Period for unrecognized compensation cost recognition		2 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	2.1	$ 4
Unrecognized compensation cost	20	$ 20
Period for unrecognized compensation cost recognition		5 years
Restricted Stock Units (RSUs) | SunEdison
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1.7	$ 1.9
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 0.1	$ 0.2
Period for unrecognized compensation cost recognition		3 years

Stock-based Compensation - Tabl

Stock-based Compensation - Tables (Details) - Jun. 30, 2015 - USD ($) $ / shares in Units, $ in Thousands	Total
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance number of option shares	150,000
Beginning balance weighted average grant date fair value per option	$ 29.31
Number of options granted	0
Weighted average grant date fair value per share for options granted	$ 0
Aggregate intrinsic value for options	$ 1,301
Ending balance number of option shares	150,000
Ending balance weighted average grant date fair value per option	$ 29.31
Number of options exercisable	37,500
Weighted average grant date fair value per share for options exercisable	$ 29.31
Aggregate intrinsic value for options exercisable	$ 325
Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance number of shares	4,876,567
Beginning balance weighted average grant date fair value per share	$ 1.12
Restricted stock granted (in shares)	0
Weighted average grant date fair value per share for shares granted	$ 0
Shares forfeited	(132,588)
Weighted average grant date fair value per share for shares forfeited	$ 0.68
Shares modified	66,294
Weighted average grant date fair value per share for shares modified	$ 35.05
Ending balance number of shares	4,810,273
Ending balance weighted average grant date fair value per share	$ 1.60
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance number of shares	825,943
Beginning balance weighted average grant date fair value per share	$ 27.37
Restricted stock granted (in shares)	1,180,000
Weighted average grant date fair value per share for shares granted	$ 34.37
Ending balance number of shares	2,005,943
Ending balance weighted average grant date fair value per share	$ 31.49

Earnings (Loss) Per Share (Deta

Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss) attributable to Class A common stockholders	$ 17,435	$ 0	$ (10,681)	$ 0
Less: earnings (loss) pertaining to acquired Call Right and operating projects	(10,635)		(10,635)
Less: dividends paid on Class A shares and participating RSAs	(20,082)		(20,082)
Undistributed earnings (loss) attributable to Class A shares	$ (13,282)		$ (41,398)
Weighted-average basic and diluted Class A shares outstanding (in shares)	57,961,000		53,874,000
Distributed earnings per share ($ per share)	$ 0.33		$ 0.35
Undistributed loss per share ($ per share)	(0.23)		(0.76)
Basic and diluted earnings (loss) per share ($ per share)	$ 0.10		$ (0.41)
Class B common stock
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]
Shares excluded from calculation (shares)	60,364,154		60,364,154
Restricted Stock Award
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]
Shares excluded from calculation (shares)	2,445,464		2,445,464
Restricted Stock Units (RSUs)
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]
Shares excluded from calculation (shares)	2,005,943		2,005,943
Equity Option
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract]
Shares excluded from calculation (shares)	150,000		150,000

Non-controlling Interests (Deta

Non-controlling Interests (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Noncontrolling Interest [Line Items]
Non-controlling interests	$ 1,253,483		$ 1,253,483		$ 1,044,529
Equity reallocation			163,046
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at December 31, 2014			24,338
Consolidation of redeemable non-controlling interests			1,708
Sale of membership interests in projects			11,842
Distributions			(1,287)
Less: Net income attributable to redeemable non-controlling interests	1,796	$ 0	1,627	$ 0
Balance at June 30, 2015	38,228		38,228
Capital
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at December 31, 2014			24,338
Consolidation of redeemable non-controlling interests			1,708
Sale of membership interests in projects			11,842
Distributions			(1,287)
Less: Net income attributable to redeemable non-controlling interests			0
Balance at June 30, 2015	36,601		36,601
Accumulated Other Comprehensive Income (Loss)
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at December 31, 2014			0
Consolidation of redeemable non-controlling interests			0
Sale of membership interests in projects			0
Distributions			0
Less: Net income attributable to redeemable non-controlling interests			1,627
Balance at June 30, 2015	1,627		1,627
SunEdison | Terra LLC | Investor
Noncontrolling Interest [Line Items]
Non-controlling interests	962,791		962,791		722,342
Riverstone | Terra LLC | Investor
Noncontrolling Interest [Line Items]
Non-controlling interests	0		0		65,376
Terra LLC | Terra LLC
Noncontrolling Interest [Line Items]
Non-controlling interests	962,791		962,791		787,718
Miscellaneous Projects | Miscellaneous Projects
Noncontrolling Interest [Line Items]
Non-controlling interests	$ 290,692		$ 290,692		$ 256,811

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	Mar. 30, 2015power_plant	Jun. 30, 2015USD ($)power_plantMW	May. 19, 2015USD ($)MW	Mar. 05, 2015MW
Loss Contingencies [Line Items]
Outstanding letters of credit | $		$ 175.7
Nameplate capacity (MW)		313
United Kingdom | Norrington
Loss Contingencies [Line Items]
Nameplate capacity (MW)				11.2
Affiliated Entity | Membership Interest Purchase and Sale Agreement
Loss Contingencies [Line Items]
Number of facilities/membership interest agreements | power_plant	2	2
Payment Guarantee
Loss Contingencies [Line Items]
Guarantee | $			$ 195
Payment Guarantee | Hydro-electric
Loss Contingencies [Line Items]
Nameplate capacity (MW)			19
Payment Guarantee | Wind Power Systems
Loss Contingencies [Line Items]
Nameplate capacity (MW)			185

Related Parties (Details)

Related Parties (Details) $ / shares in Units, $ in Thousands	Jun. 15, 2015USD ($)	Mar. 30, 2015USD ($)power_plantMW	Jan. 09, 2015USD ($)MW	Jul. 23, 2014USD ($)	Jul. 31, 2015USD ($)MW	Jun. 30, 2015USD ($)$ / sharesMW	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)power_plant$ / sharesMW	Jun. 30, 2014USD ($)	Jun. 11, 2015USD ($)	Jan. 28, 2015USD ($)	Dec. 31, 2014USD ($)
Related Party Transaction [Line Items]
Cost of operations - affiliate						$ 4,174	$ 825	$ 7,817	$ 1,217
Due from SunEdison and affiliates, net						28,062		28,062
Due to SunEdison and affiliates, net						$ 28,062		28,062				$ 186,435
Dividends								$ 33,910	0
Quarterly Distribution Rights, Level Two, Percentage						85.00%		85.00%
Quarterly Distribution Rights, Level Three						75.00%		75.00%
Quarterly Distribution Rights, Level One ($ per share) | $ / shares						$ 0.3386		$ 0.3386
Quarterly Distribution Rights, Level Two ($ per share) | $ / shares						0.3950		0.3950
Quarterly Distribution Rights, Level Three ($ per share) | $ / shares						$ 0.4514		$ 0.4514
Quarterly Distribution Rights, Level Four, Percentage						50.00%		50.00%
Nameplate capacity (MW) | MW						313		313
Senior Notes due 2023 | Secured Debt
Related Party Transaction [Line Items]
Face amount of debt instrument										$ 150,000	$ 800,000
Stated interest rate (in percent)						5.90%		5.90%		5.875%	5.875%
Incentive Distribution Rights
Related Party Transaction [Line Items]
Quarterly Distribution Rights, Level One, Percentage						15.00%		15.00%
Quarterly Distribution Rights, Level Two, Percentage						25.00%		25.00%
Quarterly Distribution Rights, Level Three						50.00%		50.00%
Quarterly Distribution Rights, Minimum Quarterly Distribution ($ per share) | $ / shares								$ 0.2257
Minimum Quarterly Distribution
Related Party Transaction [Line Items]
Quarterly Distribution Rights, Level One, Percentage						150.00%		150.00%
Quarterly Distribution Rights, Level Two, Percentage						175.00%		175.00%
Quarterly Distribution Rights, Level Three						200.00%		200.00%
SunEdison
Related Party Transaction [Line Items]
Incentives - affiliate						$ 300	400	$ 500	500
Dividends	$ 16,800
SunEdison | Management Services Agreement
Related Party Transaction [Line Items]
Management fee due to SunEdison in 2015-2017 (in percent of Terra LLC's cash available for distribution)						2.50%		2.50%
Management fee due to SunEdison in 2015 not to exceed						$ 4,000		$ 4,000
Management fee due to SunEdison in 2016 not to exceed						7,000		7,000
Management fee due to SunEdison in 2017 not to exceed						9,000		9,000
Payments for related party transactions						1,300		2,000
SunEdison | Corporate Overhead Allocation
Related Party Transaction [Line Items]
General and administrative - affiliate						$ 17,900	$ 2,100	24,800	$ 4,000
SunEdison | Interest Expense Paid by Parent
Related Party Transaction [Line Items]
Interest on loan to be paid by SunEdison not to exceed				$ 48,000
Equity contribution								$ 4,000
Holders of Incentive Distribution Rights
Related Party Transaction [Line Items]
Quarterly Distribution Rights, Level Two, Percentage						15.00%		15.00%
Quarterly Distribution Rights, Level Three						25.00%		25.00%
Quarterly Distribution Rights, Level Four, Percentage						50.00%		50.00%
Affiliated Entity
Related Party Transaction [Line Items]
Deposit								$ 181,200
Affiliated Entity | Membership Interest Purchase and Sale Agreement
Related Party Transaction [Line Items]
Number of facilities/membership interest agreements | power_plant		2						2
Deposit		$ 378,200
Affiliated Entity | Membership Interest Purchase and Sale Agreement | Subsequent Event
Related Party Transaction [Line Items]
Deposit					$ 202,000
Affiliated Entity | Membership Interest Purchase and Sale Agreement | Maine
Related Party Transaction [Line Items]
Nameplate capacity (MW) | MW		147.6
Affiliated Entity | Membership Interest Purchase and Sale Agreement | Texas
Related Party Transaction [Line Items]
Nameplate capacity (MW) | MW		200
Affiliated Entity | Membership Interest Purchase and Sale Agreement | Texas | Subsequent Event
Related Party Transaction [Line Items]
Nameplate capacity (MW) | MW					300
Affiliated Entity | Project Support Agreement | SunEdison
Related Party Transaction [Line Items]
Nameplate capacity (MW) | MW			41.7
Affiliated Entity | Project Support Agreement | Chile | SunEdison
Related Party Transaction [Line Items]
Deposit			$ 18,000
SunEdison | Incentive Distribution Rights
Related Party Transaction [Line Items]
Quarterly Distribution Right Held, Percentage						100.00%		100.00%

Segment Reporting - Income stat

Segment Reporting - Income statement summary table (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)reportable_segment	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment			2
Segment Reporting Information, Profit (Loss) [Abstract]
Operating revenues, net	$ 130,046	$ 22,378	$ 200,561	$ 30,770
Depreciation, accretion and amortization	38,136	4,953	70,027	8,387
Other operating costs and expenses	52,229	8,831	102,816	11,393
Interest expense, net	35,961	24,621	72,816	32,148
Other non-operating (income) expenses	(26,628)	2,024	8,259	2,619
Income tax provision (benefit)	1,214	(5,318)	1,169	(6,875)
Net income (loss)	29,134	(12,733)	(54,526)	(16,902)
Balance Sheet
Total assets	5,173,169	3,669,350	5,173,169	3,669,350	$ 3,669,350
Corporate
Segment Reporting Information, Profit (Loss) [Abstract]
Operating revenues, net	0	0	0	0
Depreciation, accretion and amortization	0	0	0	0
Other operating costs and expenses	30,429	6,240	52,996	7,830
Interest expense, net	16,820	17,191	36,580	17,718
Other non-operating (income) expenses	(12,592)	(1,961)	13,434	(1,961)
Income tax provision (benefit)	1,214	(5,318)	1,169	(6,875)
Net income (loss)	(35,871)	(16,152)	(104,179)	(16,712)
Balance Sheet
Total assets	293,541	514,170	293,541	514,170
Segments | Solar Energy
Segment Reporting Information, Profit (Loss) [Abstract]
Operating revenues, net	95,468	22,378	143,838	30,770
Depreciation, accretion and amortization	29,537	4,953	55,292	8,387
Other operating costs and expenses	15,821	2,591	30,828	3,563
Interest expense, net	19,047	7,430	35,385	14,430
Other non-operating (income) expenses	(12,718)	3,985	(12,292)	4,580
Income tax provision (benefit)	0	0	0	0
Net income (loss)	43,781	3,419	34,625	(190)
Balance Sheet
Total assets	3,924,640	3,155,180	3,924,640	3,155,180
Segments | Wind
Segment Reporting Information, Profit (Loss) [Abstract]
Operating revenues, net	34,578	0	56,723	0
Depreciation, accretion and amortization	8,599	0	14,735	0
Other operating costs and expenses	5,979	0	18,992	0
Interest expense, net	94	0	851	0
Other non-operating (income) expenses	(1,318)	0	7,117	0
Income tax provision (benefit)	0	0	0	0
Net income (loss)	21,224	0	15,028	0
Balance Sheet
Total assets	$ 954,988	$ 0	$ 954,988	$ 0

Other Comprehensive Income (L74

Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, December 31, 2014			$ (1,637)
Net unrealized gains (losses) arising during the period			(1,243)
Interest expense, net			3,207
Other comprehensive income, net of tax	$ 4,630	$ 573	1,964	$ 573
Accumulated other comprehensive (loss) income	327		327
Less: other comprehensive income attributable to non-controlling interests, net of tax	2,807	0	1,113	0
Balance, June 30, 2015	(786)		(786)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments, before tax	3,852	573	577	573
Foreign currency translation adjustments, tax effect	0	0	0	0
Foreign currency translation adjustments, net of tax	3,852	573	577	573
Unrealized loss on hedging instruments, before tax	428	0	(1,820)	0
Unrealized loss on hedging instruments, tax effect	0	0	0	0
Unrealized loss on hedging instruments, net of tax	428	0	(1,820)	0
Reclassification, before tax	350	0	3,207	0
Reclassification, tax	0	0	0	0
Reclassification, after tax	350	0	3,207	0
Net change, before tax	778	0	1,387	0
Net change, tax	0	0	0	0
Net change, after tax	778	0	1,387	0
Other comprehensive loss, before tax	4,630	573	1,964	573
Other comprehensive loss, tax effect	0	0	0	0
Other comprehensive loss, net of tax	4,630	573	1,964	573
Less: other comprehensive income attributable to non-controlling interests, net of tax	2,807	0	1,113	0
Other comprehensive income attributable to Class A stockholders	1,823	$ 573	851	$ 573
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, December 31, 2014			(1,149)
Net unrealized gains (losses) arising during the period			577
Interest expense, net			0
Other comprehensive income, net of tax			577
Accumulated other comprehensive (loss) income	(572)		(572)
Less: other comprehensive income attributable to non-controlling interests, net of tax			315
Balance, June 30, 2015	(887)		(887)
Other comprehensive income (loss), net of tax:
Other comprehensive loss, net of tax			577
Less: other comprehensive income attributable to non-controlling interests, net of tax			315
Hedging Activities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, December 31, 2014			(488)
Net unrealized gains (losses) arising during the period			(1,820)
Interest expense, net			3,207
Other comprehensive income, net of tax			1,387
Accumulated other comprehensive (loss) income	899		899
Less: other comprehensive income attributable to non-controlling interests, net of tax			798
Balance, June 30, 2015	$ 101		101
Other comprehensive income (loss), net of tax:
Other comprehensive loss, net of tax			1,387
Less: other comprehensive income attributable to non-controlling interests, net of tax			$ 798