Greenbacker Renewable Energy 10-K 11 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 01, 2019
Document And Entity Information
Entity Registrant Name	Greenbacker Renewable Energy Co LLC
Entity Central Index Key	0001563922
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity a Well-known Seasoned Issuer	No
Entity a Voluntary Filer	No
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity's Reporting Status Current	Yes
Entity Shell Company	false
Entity Filer Category	Non-accelerated Filer
Entity Public Float	$ 0
Entity Common Stock, Shares Outstanding		40,502,073
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2018

CONSOLIDATED STATEMENTS OF ASSE

CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES - USD ($)		Dec. 31, 2018		Dec. 31, 2017
ASSETS
Investments in controlled/affiliated portfolios, at fair value (cost of $298,314,385 and $212,361,027, respectively)		$ 307,176,115		$ 218,386,174
Swap contracts, at fair value		435,603		156,068
Cash and cash equivalents		39,122,635		10,144,014
Shareholder receivable		469,245		225,509
Dividend receivable		488,000
Deferred tax assets, net of allowance		6,051,957		4,524,038
Other assets		201,074		74,242
Total assets		353,944,629		233,510,045
LIABILITIES
Swap contracts, at fair value		311,641
Payable for investments purchased		8,901		15,414,205
Term note payable, net of financing costs		29,527,046		12,910,364
Management fee payable		588,161		57,291
Accounts payable and accrued expenses		727,175		400,144
Shareholder distributions payable		1,260,754		711,306
Interest payable		3,507		112,245
Due to advisor		19,181		10,417
Payable for repurchases of common stock		1,249,808		969,448
Deferred sales commission payable		191,706		249,858
Total liabilities		33,887,880		30,835,278
Commitments and contingencies (See Note 2, Note 5 and Note 9)
MEMBERS' EQUITY (NET ASSETS)
Preferred stock, par value, $.001 per share, 50,000,000 authorized; none issued and outstanding
Common stock, par value, $.001 per share, 350,000,000 authorized; 37,003,502 and 23,189,229 shares issued and outstanding, respectively		37,004		23,189
Paid-in capital in excess of par value		321,741,819		200,510,790
Accumulated deficit		(19,870,206)		(10,216,279)
Accumulated net realized gain on investments		698,460		698,460
Accumulated unrealized appreciation (depreciation) on:
Investments, net of deferred taxes		15,737,151		10,356,379
Foreign currency translation		(208,579)		(90,083)
Swap contracts		123,962		156,068
Total common equityholders' equity		318,259,611		201,438,524
Special unitholder's equity		1,797,138		1,236,243
Total members' equity (net assets)		320,056,749		202,674,767
Total liabilities and equity (net assets)		353,944,629		233,510,045
Common Class A [Member]
Accumulated unrealized appreciation (depreciation) on:
Total common equityholders' equity		142,791,899	[1]	120,344,517	[2]
Common Class C [Member]
Accumulated unrealized appreciation (depreciation) on:
Total common equityholders' equity		18,546,310	[1]	12,053,349	[2]
Common Class I [Member]
Accumulated unrealized appreciation (depreciation) on:
Total common equityholders' equity		53,046,260	[1]	39,181,769	[2]
Common Class P-A [Member]
Accumulated unrealized appreciation (depreciation) on:
Total common equityholders' equity	[1],[3]	132,272
Common Class P-I [Member]
Accumulated unrealized appreciation (depreciation) on:
Total common equityholders' equity		$ 103,742,870	[1]	$ 29,858,889	[2]
[1]	The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2018, which were 15,338,291, 1,803,985, 5,386,556, 11,042, and 7,266,426, respectively.
[2]	The per share data for Class A, C, I and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2017, which were 12,384,101, 1,194,718, 3,529,998 and 1,792,632, respectively.
[3]	Class P-A shares were reinstated for sale as of April 16, 2018.

CONSOLIDATED STATEMENTS OF AS_2

CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES (Parenthetical) - USD ($)	Dec. 31, 2018		Dec. 31, 2017
Investments in controlled/affiliated portfolios at fair value, cost	$ 298,314,385		$ 212,361,027
Preferred stock, par value (in dollars per share)	$ 0.001		$ 0.001
Preferred stock, authorized	50,000,000		50,000,000
Preferred stock, issued
Preferred stock, outstanding
Common stock, par value (in dollars per share)	$ 0.001		$ 0.001
Common stock, authorized	350,000,000		350,000,000
Common stock, issued	37,003,502		23,189,229
Common stock, outstanding	37,003,502		23,189,229
Common Class A [Member]
Common stock, outstanding	16,714,738	[1]	13,857,830	[2]
Common Class C [Member]
Common stock, outstanding	2,222,478	[1]	1,431,999	[2]
Common Class I [Member]
Common stock, outstanding	6,209,416	[1]	4,511,832	[2]
Common Class P-A [Member]
Common stock, outstanding	15,478	[1],[3]
Common Class P-I [Member]
Common stock, outstanding	11,841,392	[1]	3,387,568
[1]	The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2018, which were 15,338,291, 1,803,985, 5,386,556, 11,042, and 7,266,426, respectively.
[2]	The per share data for Class A, C, I and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2017, which were 12,384,101, 1,194,718, 3,529,998 and 1,792,632, respectively.
[3]	Class P-A shares were reinstated for sale as of April 16, 2018 and first sold on August 6, 2018.

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investment income from controlled, affiliated investments:
Dividend Income	$ 18,503,814	$ 13,125,642	$ 6,267,442
Interest Income	263,791	107,547	1,914,865
Total investment income from controlled, affiliated investments	18,767,605	13,233,189	8,182,307
Investment income from non-controlled, non-affiliated investments:
Interest Income	779,825	149,932	53,718
Total investment income	19,547,430	13,383,121	8,236,025
Operating expenses:
Management fee expense	5,803,893	3,351,250	2,018,434
Audit and tax expense	913,509	685,570	546,564
Interest and financing expenses	1,948,682	847,948	385,693
General and administration expenses	375,159	421,673	417,247
Legal expenses	139,059	183,545	271,820
Directors fees and expenses	100,209	100,210	99,317
Insurance expense	95,780	64,411	73,717
Transfer agent expense	382,943
Organizational expenses			35,188
Incentive fees		139,692
Other expenses	106,881	129,780	92,247
Operating expenses before expense waiver and reimbursement	9,866,115	5,924,079	3,940,227
Expense reimbursement to advisor			636,926
Total expenses	9,866,115	5,924,079	4,577,153
Net investment income before taxes	9,681,315	7,459,042	3,658,872
Deferred tax (benefit) expense	1,458,669	2,619,076	(1,142,738)
Franchise tax expense	138,436	23,415	121,940
Net investment income	8,084,210	4,816,551	4,679,670
Net change in realized and unrealized gain (loss) on investments, foreign currency translation and deferred tax assets:
Net realized gain on investments		693,882	4,578
Net change in unrealized appreciation (depreciation) on:
Investments	2,955,079	5,929,033	(1,473,781)
Foreign currency translation	(118,496)	97,763	40,703
Swap contracts	(32,106)	65,371	90,697
Change in benefit from deferred taxes on unrealized appreciation (depreciation) on investments	2,986,588	963,720	4,386,656
Net increase in net assets resulting from operations	13,875,275	12,566,320	7,728,523
Net increase (decrease) in net assets resulting from operations attributed to special unitholder	(560,895)	(1,235,657)	285,673
Net increase in net assets resulting from operations attributed to common equityholders	$ 13,314,380	$ 11,330,663	$ 8,014,196
Common stock per share information - basic and diluted:
Net investment income (in dollars per share)	$ 0.27	$ 0.25	$ 0.43
Net increase in net assets resulting from operations attributed to common equityholders (in dollars per share)	$ 0.45	$ 0.60	$ 0.73
Weighted average common shares outstanding (in shares)	29,799,735	18,922,343	11,043,156

CONSOLIDATED STATEMENT OF NET A

CONSOLIDATED STATEMENT OF NET ASSETS - USD ($)	3 Months Ended							12 Months Ended
	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Common Equityholders [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		$ 23,189		$ 14,922		$ 6,722		$ 23,189	$ 14,922	$ 6,722
Balances at Beginning (in shares)		23,189,229		14,921,922		6,721,967		23,189,229	14,921,922	6,721,967
Proceeds from issuance of common stock, net								$ 13,627	$ 8,251	$ 8,127
Proceeds from issuance of common stock, net (in shares)								13,625,689	8,251,118	8,127,146
Issuance of common stock under distribution reinvestment plan								$ 694	$ 534	$ 359
Issuance of common stock under distribution reinvestment plan (in shares)								694,427	533,645	359,464
Repurchases of common stock								$ (506)	$ (518)	$ (286)
Repurchases of common stock (in shares)								(505,843)	(517,456)	(286,655)
Offering costs
Shareholder distributions
Net investment income
Net realized gain on investments
Net change in unrealized depreciation on investments
Net change in unrealized appreciation on foreign currency translation
Net change in unrealized appreciation on swaps
Change in benefit from deferred taxes on unrealized appreciation on investments
Balances at ending	$ 37,004		$ 23,189		$ 14,922		$ 6,722	$ 37,004	$ 23,189	$ 14,922
Balances at ending (in shares)	37,003,502		23,189,229		14,921,922		6,721,967	37,003,502	23,189,229	14,921,922
Paid-in capital in excess of par value [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		$ 200,510,790		$ 128,425,800		$ 57,713,925		$ 200,510,790	$ 128,425,800	$ 57,713,925
Proceeds from issuance of common stock, net								120,313,445	72,411,556	73,883,345
Issuance of common stock under distribution reinvestment plan								6,126,095	4,747,000	3,290,227
Repurchases of common stock								(4,473,965)	(4,147,180)	(2,637,515)
Offering costs								(734,546)	(926,386)	(3,824,182)
Shareholder distributions
Net investment income
Net realized gain on investments
Net change in unrealized depreciation on investments
Net change in unrealized appreciation on foreign currency translation
Net change in unrealized appreciation on swaps
Change in benefit from deferred taxes on unrealized appreciation on investments
Balances at ending	$ 321,741,820		$ 200,510,790		$ 128,425,800		$ 57,713,925	321,741,820	200,510,790	128,425,800
Accumulated deficit [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		(10,216,279)		(3,629,220)		(1,591,014)		(10,216,279)	(3,629,220)	(1,591,014)
Proceeds from issuance of common stock, net
Issuance of common stock under distribution reinvestment plan
Repurchases of common stock
Offering costs
Shareholder distributions								(17,738,137)	(11,403,610)	(6,717,876)
Net investment income								8,084,210	4,816,551	4,679,670
Net realized gain on investments
Net change in unrealized depreciation on investments
Net change in unrealized appreciation on foreign currency translation
Net change in unrealized appreciation on swaps
Change in benefit from deferred taxes on unrealized appreciation on investments
Balances at ending	(19,870,206)		(10,216,279)		(3,629,220)		(1,591,014)	(19,870,206)	(10,216,279)	(3,629,220)
Accumulated net realized gain on investments [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		698,460		4,578				698,460	4,578
Proceeds from issuance of common stock, net
Issuance of common stock under distribution reinvestment plan
Repurchases of common stock
Offering costs
Shareholder distributions
Net investment income
Net realized gain on investments									693,882	4,578
Net change in unrealized depreciation on investments
Net change in unrealized appreciation on foreign currency translation
Net change in unrealized appreciation on swaps
Change in benefit from deferred taxes on unrealized appreciation on investments
Balances at ending	698,460		698,460		4,578			698,460	698,460	4,578
Accumulated unrealized appreciation (depreciation) on investments, net of deferred taxes [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		10,356,379		4,699,283		1,500,735		10,356,379	4,699,283	1,500,735
Proceeds from issuance of common stock, net
Issuance of common stock under distribution reinvestment plan
Repurchases of common stock
Offering costs
Shareholder distributions
Net investment income
Net realized gain on investments
Net change in unrealized depreciation on investments								2,955,079	4,693,376	(1,188,108)
Net change in unrealized appreciation on foreign currency translation
Net change in unrealized appreciation on swaps
Change in benefit from deferred taxes on unrealized appreciation on investments								2,986,588	963,720	4,386,656
Balances at ending	16,298,046		10,356,379		4,699,283		1,500,735	16,298,046	10,356,379	4,699,283
Accumulated unrealized appreciation (depreciation) on foreign currency translation [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		(90,083)		(187,846)		(228,549)		(90,083)	(187,846)	(228,549)
Proceeds from issuance of common stock, net
Issuance of common stock under distribution reinvestment plan
Repurchases of common stock
Offering costs
Shareholder distributions
Net investment income
Net realized gain on investments
Net change in unrealized depreciation on investments
Net change in unrealized appreciation on foreign currency translation								(118,496)	97,763	40,703
Net change in unrealized appreciation on swaps
Change in benefit from deferred taxes on unrealized appreciation on investments
Balances at ending	(208,579)		(90,083)		(187,846)		(228,549)	(208,579)	(90,083)	(187,846)
Accumulated unrealized appreciation (depreciation) on swap contracts [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		156,068		90,697				156,068	90,697
Proceeds from issuance of common stock, net
Issuance of common stock under distribution reinvestment plan
Repurchases of common stock
Offering costs
Shareholder distributions
Net investment income
Net realized gain on investments
Net change in unrealized depreciation on investments
Net change in unrealized appreciation on foreign currency translation
Net change in unrealized appreciation on swaps								(32,107)	65,371	90,697
Change in benefit from deferred taxes on unrealized appreciation on investments
Balances at ending	123,961		156,068		90,697			123,961	156,068	90,697
Common equityholders equity [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		201,438,524		129,418,214		57,401,819		201,438,524	129,418,214	57,401,819
Proceeds from issuance of common stock, net								120,327,072	72,419,807	73,891,472
Issuance of common stock under distribution reinvestment plan								6,126,789	4,747,534	3,290,586
Repurchases of common stock								(4,474,471)	(4,147,698)	(2,637,801)
Offering costs								(734,546)	(926,386)	(3,824,182)
Shareholder distributions								(17,738,137)	(11,403,610)	(6,717,876)
Net investment income								8,084,210	4,816,551	4,679,670
Net realized gain on investments									693,882	4,578
Net change in unrealized depreciation on investments								2,955,079	4,693,376	(1,188,108)
Net change in unrealized appreciation on foreign currency translation								(118,496)	97,763	40,703
Net change in unrealized appreciation on swaps								(32,107)	65,371	90,697
Change in benefit from deferred taxes on unrealized appreciation on investments								2,986,588	963,720	4,386,656
Balances at ending	318,820,506		201,438,524		129,418,214		57,401,819	318,820,506	201,438,524	129,418,214
Special unitholder [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances at Beginning		1,236,243		586		286,259		1,236,243	586	286,259
Proceeds from issuance of common stock, net
Issuance of common stock under distribution reinvestment plan
Repurchases of common stock
Offering costs
Shareholder distributions
Net investment income
Net realized gain on investments
Net change in unrealized depreciation on investments									1,235,657	(285,673)
Net change in unrealized appreciation on foreign currency translation
Net change in unrealized appreciation on swaps
Change in benefit from deferred taxes on unrealized appreciation on investments
Balances at ending	1,236,243		1,236,243		586		286,259	1,236,243	1,236,243	586
Balances at Beginning		202,674,767		129,418,800		57,688,078		202,674,767	129,418,800	57,688,078
Proceeds from issuance of common stock, net								$ 120,327,072	$ 72,419,807	73,891,472
Proceeds from issuance of common stock, net (in shares)								14,320,115	8,733,897
Issuance of common stock under distribution reinvestment plan								$ 6,126,789	$ 4,747,534	3,290,586
Repurchases of common stock								$ (4,474,471)	$ (4,147,698)	(2,637,801)
Repurchases of common stock (in shares)								505,842	466,590
Offering costs								$ (734,546)	$ (926,386)	(3,824,182)
Shareholder distributions								(17,738,137)	(11,403,610)	(6,717,876)
Net investment income	(434,963)	3,271,370	229,297	1,450,378	1,497,148	23,132	253,576	8,084,210	4,816,551	4,679,670
Net realized gain on investments									693,882	4,578
Net change in unrealized depreciation on investments								2,955,079	5,929,033	(1,473,781)
Net change in unrealized appreciation on foreign currency translation								(118,496)	97,763	40,703
Net change in unrealized appreciation on swaps								(32,107)	65,371	90,697
Change in benefit from deferred taxes on unrealized appreciation on investments	1,877,386	$ (1,239,228)	1,198,186	$ (262,069)	671,401	$ 1,885,335	127,015	2,986,588	963,720	4,386,656
Balances at ending	$ 320,056,749		$ 202,674,767		$ 129,418,800		$ 57,688,078	$ 320,056,749	$ 202,674,767	$ 129,418,800

CONSOLIDATED STATEMENTS OF CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities:
Net increase in net assets from operations	$ 13,875,275	$ 12,566,320	$ 7,728,523
Adjustments to reconcile net increase in net assets from operations to net cash used in operating activities:
Amortization of deferred financing costs	222,394	164,725	95,339
Amortization and accretion of premium and discount	(88,432)
Purchase of investments	(90,485,953)	(117,538,601)	(65,451,172)
Proceeds from principal payments and sales of investments	4,621,231	20,996,206	354,137
Net realized (gain) on investments		(693,882)	(4,578)
Net change in unrealized (appreciation) depreciation on investments	(2,955,079)	(5,929,033)	1,473,781
Net change in unrealized (appreciation) depreciation on foreign currency translation	118,496	(97,763)	(40,703)
Net change in unrealized (appreciation) depreciation on swap contracts	32,106	(65,371)	(90,697)
(Increase) decrease in other assets:
Dividend receivable	(488,000)
Due from advisor, net			26,636
Deferred tax assets, net of allowance	(1,527,919)	1,655,356	(5,529,394)
Other assets	(126,832)	(9,198)	12,474
Increase (decrease) in other liabilities:
Payable for investments purchased	(15,405,304)	15,414,205
Due to advisor, net	8,764	(89,365)
Management fee payable	530,870	(175,565)	140,993
Accounts payable and accrued expenses	327,031	(23,495)	95,840
Interest payable	(108,738)	112,245
Directors fees payable			(23,750)
Net cash used in operating activities	(91,450,090)	(73,713,216)	(61,212,571)
Financing activities:
Borrowings on Credit facility and term note	30,665,460	15,800,000	14,300,000
Paydowns on Credit facility and term note	(13,655,794)	(6,324,760)	(10,119,442)
Payments of financing costs	(615,378)		(1,005,494)
Proceeds from issuance of shares of common stock, net	120,024,951	72,672,757	73,763,600
Distributions paid	(11,061,871)	(6,348,757)	(3,180,297)
Offering costs	(734,546)	(926,386)	(3,824,182)
Repurchases of common stock	(4,194,111)	(4,034,020)	(1,692,030)
Due to advisor re: Offering costs			99,782
Due to dealer manager re: Offering costs		(36,694)	36,694
Net cash provided by financing activities	120,428,711	70,802,140	68,378,631
Net increase (decrease) in cash and cash equivalents	28,978,621	(2,911,076)	7,166,060
Cash and cash equivalents, beginning of period	10,144,014	13,055,090	5,889,030
Cash and cash equivalents, end of period	39,122,635	10,144,014	13,055,090
Supplemental disclosure of cash flow information:
Shareholder distributions payable	1,260,754	711,306	403,983
Shareholder distributions reinvested in common stock	6,126,789	4,747,534	3,290,586
Payable for repurchases of common stock	1,249,808	969,448	945,770
Cash interest paid during the period	1,219,237	490,139	288,758
Non cash financing activities
Shareholder receivable from sale of common stock	469,245	225,509	521,954
Purchase of investments	8,091	15,414,205	26,335,478
Repayments of investments			26,335,478
Investments disposed of/received through in-kind transactions		$ 11,420,306

CONSOLIDATED SCHEDULES OF INVES

CONSOLIDATED SCHEDULES OF INVESTMENTS - USD ($)		Dec. 31, 2018	Dec. 31, 2017
Cost		$ 298,314,385	$ 212,361,027
Fair Value		$ 307,176,115	$ 218,386,174
Percentage of Net Assets	[1]	100.00%	100.00%
OTHER ASSETS IN EXCESS OF LIABILITIES, Fair Value		$ 12,880,634	$ (15,711,407)
OTHER ASSETS IN EXCESS OF LIABILITIES, Percentage of Net Assets		4.10%	(7.80%)
TOTAL NET ASSETS		$ 320,056,749	$ 202,674,767
Investments [Member]
Shares or Principal Amount		95.90%	107.80%
Cost		$ 298,314,385	$ 212,361,027
Fair Value		$ 307,176,115	$ 218,386,174
Percentage of Net Assets	[1]	95.90%	107.80%
Alternative Energy - Wind [Member]
Cost		$ 63,446,680	$ 62,846,681
Fair Value		$ 65,165,744	$ 66,702,849
Percentage of Net Assets		21.20%	30.50%
Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - California [Member]
Cost		$ 9,500,000	$ 9,500,000
Fair Value		$ 8,070,745	$ 9,506,752
Percentage of Net Assets		2.60%	4.30%
Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - Idaho [Member]
Cost		$ 7,320,000	$ 7,320,000
Fair Value		$ 6,385,631	$ 6,799,153
Percentage of Net Assets		2.10%	3.00%
Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - Montana [Member]
Cost		$ 21,709,487	$ 21,609,488
Fair Value		$ 21,956,868	$ 23,228,136
Percentage of Net Assets		7.10%	10.60%
Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - Vermont [Member]
Cost		$ 24,917,193	$ 24,417,193
Fair Value		$ 28,752,500	$ 27,168,808
Percentage of Net Assets		9.40%	12.60%
Pre-Operational Assets [Member]
Cost		$ 50,353,115
Fair Value		$ 50,235,080
Percentage of Net Assets		16.30%
Pre-Operational Assets [Member] | Colorado CSG Solar Portfolio [Member]
Cost		$ 27,333,205
Fair Value		$ 27,215,170
Percentage of Net Assets		8.90%
Pre-Operational Assets [Member] | Phoenix Solar Portfolio [Member]
Cost		$ 9,964,515
Fair Value		$ 9,964,515
Percentage of Net Assets		3.20%
Pre-Operational Assets [Member] | SE Solar Portfolio [Member]
Cost		$ 7,178,207
Fair Value		$ 7,178,207
Percentage of Net Assets		2.30%
Pre-Operational Assets [Member] | Turquoise Solar Portfolio [Member]
Cost		$ 5,877,188
Fair Value		$ 5,877,188
Percentage of Net Assets		1.90%
Other Investments [Member] | Other Investments [Member]
Cost		$ 1,279,273
Fair Value		$ 1,263,620
Percentage of Net Assets		0.40%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member]
Shares or Principal Amount		46.00%	54.50%
Cost		$ 144,732,656	$ 110,855,889
Fair Value		$ 147,571,531	$ 110,381,133
Percentage of Net Assets	[1]	46.00%	54.50%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | East To West Solar Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 37,079,887	$ 27,934,875
Fair Value		$ 33,665,088	$ 27,200,000
Percentage of Net Assets	[1]	10.50%	13.40%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Foresight Solar Portfolio [Member]
Cost		$ 13,650,000	$ 13,200,071
Fair Value		$ 14,357,201	$ 13,200,071
Percentage of Net Assets	[1]	4.50%	6.50%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Golden Horizons Solar Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 9,400,000	$ 9,450,000
Fair Value		$ 14,445,071	$ 9,482,075
Percentage of Net Assets	[1]	4.50%	4.70%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Green Maple Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 17,582,823	$ 13,075,000
Fair Value		$ 16,066,837	$ 11,956,821
Percentage of Net Assets	[1]	5.00%	5.90%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Magnolia Sun Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 10,775,000	$ 10,775,000
Fair Value		$ 8,258,786	$ 9,635,508
Percentage of Net Assets	[1]	2.60%	4.80%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Midway III Solar Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 11,552,904	$ 10,093,861
Fair Value		$ 13,265,608	$ 10,093,861
Percentage of Net Assets	[1]	4.10%	5.00%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Raleigh Portfolio [Member]
Cost		$ 20,822,198	$ 20,672,198
Fair Value		$ 21,358,997	$ 22,850,465
Percentage of Net Assets	[1]	6.70%	11.30%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Six States Solar Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 12,470,306	$ 4,770,306
Fair Value		$ 13,440,025	$ 4,756,893
Percentage of Net Assets	[1]	4.20%	2.30%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Sun Farm Portoflio [Member]
Shares or Principal Amount		100.00%
Cost		$ 10,514,960
Fair Value		$ 11,606,877
Percentage of Net Assets	[1]	3.60%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Commercial Solar [Member] | Sunny Mountain Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 884,578	$ 884,578
Fair Value		$ 1,107,041	$ 1,205,439
Percentage of Net Assets	[1]	0.30%	0.60%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Residential Solar [Member]
Shares or Principal Amount		13.20%	19.80%
Cost		$ 37,503,136	$ 37,503,136
Fair Value		$ 41,918,094	$ 40,124,684
Percentage of Net Assets	[1]	13.20%	19.80%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Residential Solar [Member] | Canadian Northern Lights Portfolio [Member]
Shares or Principal Amount	[2]	100.00%	100.00%
Cost	[2]	$ 1,603,136	$ 1,603,136
Fair Value	[2]	$ 2,081,554	$ 2,093,827
Percentage of Net Assets	[1],[2]	0.70%	1.10%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Residential Solar [Member] | Enfinity Colorado DHA Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 1,400,000	$ 1,400,000
Fair Value		$ 1,700,728	$ 1,671,317
Percentage of Net Assets	[1]	0.50%	0.80%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Residential Solar [Member] | Greenbacker Residential Solar Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 28,100,000	$ 28,100,000
Fair Value		$ 27,372,253	$ 28,373,526
Percentage of Net Assets	[1]	8.60%	14.00%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Residential Solar [Member] | Greenbacker Residential Solar Portfolio II [Member]
Cost		$ 6,400,000	$ 6,400,000
Fair Value		$ 10,763,559	$ 7,986,014
Percentage of Net Assets	[1]	3.40%	3.90%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Wind [Member]
Shares or Principal Amount		20.40%	33.00%
Cost		$ 63,446,680	$ 62,846,681
Fair Value		$ 65,165,744	$ 66,702,849
Percentage of Net Assets	[1]	20.40%	33.00%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Wind [Member] | Greenbacker Wind Portfolio - California [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 9,500,000	$ 9,500,000
Fair Value		$ 8,070,745	$ 9,506,752
Percentage of Net Assets	[1]	2.50%	4.70%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Wind [Member] | Greenbacker Wind Portfolio - Montana [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 21,709,487	$ 21,609,488
Fair Value		$ 21,956,868	$ 23,228,136
Percentage of Net Assets	[1]	6.90%	11.50%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Wind [Member] | Greenbacker Wind Portfolio - Vermont [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 24,917,193	$ 24,417,193
Fair Value		$ 28,752,500	$ 27,168,808
Percentage of Net Assets	[1]	9.00%	13.40%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - Idaho [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 7,320,000	$ 7,320,000
Fair Value		$ 6,385,631	$ 6,799,153
Percentage of Net Assets	[1]	2.00%	3.40%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Pre-Operational Assets [Member]
Shares or Principal Amount		15.60%
Cost		$ 50,353,115
Fair Value		$ 50,235,080
Percentage of Net Assets	[1]	15.60%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Pre-Operational Assets [Member] | Colorado CSG Solar Portfolio [Member]
Shares or Principal Amount		100.00%
Cost		$ 27,333,205
Fair Value		$ 27,215,170
Percentage of Net Assets	[1]	8.50%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Pre-Operational Assets [Member] | Phoenix Solar Portfolio [Member]
Shares or Principal Amount		100.00%
Cost		$ 9,964,515
Fair Value		$ 9,964,515
Percentage of Net Assets	[1]	3.10%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Pre-Operational Assets [Member] | SE Solar Portfolio [Member]
Shares or Principal Amount		100.00%
Cost		$ 7,178,207
Fair Value		$ 7,178,207
Percentage of Net Assets	[1]	2.20%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Pre-Operational Assets [Member] | Turquoise Solar Portfolio [Member]
Shares or Principal Amount		100.00%
Cost		$ 5,877,188
Fair Value		$ 5,877,188
Percentage of Net Assets	[1]	1.80%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Other Investments [Member]
Shares or Principal Amount		0.40%
Cost		$ 1,279,273
Fair Value		$ 1,263,620
Percentage of Net Assets	[1]	0.40%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Other Investments [Member] | Other Investments [Member]
Cost	[3]	$ 1,279,273
Fair Value	[3]	$ 1,263,620
Percentage of Net Assets	[1],[3]	0.40%
Limited Liability Company Member Interests in the United States - Not Readily Marketable [Member] | Energy Efficiency [Member] | GREC Energy Efficiency Portfolio [Member]
Shares or Principal Amount		100.00%	100.00%
Cost		$ 447,885	$ 482,450
Fair Value		$ 470,406	$ 504,637
Percentage of Net Assets	[1]	0.10%	0.20%
Energy Efficiency Secured Loans - Not Readily Marketable [Member] | Energy Efficiency [Member] | 10.25% Renew AEC One, LLC Due 2025-02-24 [Member]
Shares or Principal Amount		$ 551,640	$ 672,871
Cost		551,640	672,871
Fair Value		$ 551,640	$ 672,871
Percentage of Net Assets	[1]	0.20%	0.30%
Energy Efficiency [Member] | Energy Efficiency [Member]
Shares or Principal Amount		0.30%	0.50%
Cost		$ 999,525	$ 1,155,321
Fair Value		$ 1,022,046	$ 1,177,508
Percentage of Net Assets	[1]	0.30%	0.50%
[1]	Percentages are based on net assets of $320,056,749 as of December 31, 2018.
[2]	Portfolio is located outside of the United States of America.
[3]	Includes pre-acquisition and due diligence expenses.

CONSOLIDATED SCHEDULES OF INV_2

CONSOLIDATED SCHEDULES OF INVESTMENTS (Interest Rate Swaps) - Interest Rate Swaps [Member] - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value	$ 123,962	$ 156,068
Upfront Premiums Paid (Received)
Fifth Third Financial Risk Solutions Due 07/09/2021 [Member]
Floating Rate Index	1-MO-USD-LIBOR	1-MO-USD-LIBOR
Fixed Pay Rate	1.11%	1.11%
Payment Frequency	Monthly	Monthly
Maturity Date	Jul. 9, 2021	Jul. 9, 2021
Notional Amount	$ 3,607,222	$ 3,893,889
Fair Value	107,431	108,518
Upfront Premiums Paid (Received)
Fifth Third Financial Risk Solutions Due 02/29/2032 [Member]
Floating Rate Index	1-MO-USD-LIBOR	1-MO-USD-LIBOR
Fixed Pay Rate	2.261%	2.261%
Payment Frequency	Monthly	Monthly
Maturity Date	Feb. 29, 2032	Feb. 29, 2032
Notional Amount	$ 20,668,547	$ 20,900,650
Fair Value	328,172	47,550
Upfront Premiums Paid (Received)
Fifth Third Financial Risk Solutions Due 12/31/2038 [Member]
Floating Rate Index	1-MO-USD-LIBOR
Fixed Pay Rate	2.648%
Payment Frequency	Monthly
Maturity Date	Dec. 31, 2038
Notional Amount	$ 29,624,945
Fair Value	(190,440)
Upfront Premiums Paid (Received)
Fifth Third Financial Risk Solutions Due 12/31/2038 [Member]
Floating Rate Index	1-MO-USD-LIBOR
Fixed Pay Rate	2.965%
Payment Frequency	Monthly
Maturity Date	Dec. 31, 2038
Notional Amount	$ 4,180,063
Fair Value	(121,201)
Upfront Premiums Paid (Received)

Organization and Operations of

Organization and Operations of the Company	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Operations of the Company	Note 1. Organization and Operations of the Company Greenbacker Renewable Energy Company LLC (the “LLC”), a Delaware limited liability company, formed in December 2012, is an externally managed energy company that acquires and manages income- generating renewable energy and energy efficiency projects, and other energy-related businesses, as well as finances the construction and/or operation of these and sustainable development projects and businesses. The LLC conducts substantially all of its operations through its wholly-owned subsidiary, Greenbacker Renewable Energy Corporation (“GREC”). GREC is a Maryland corporation formed in November 2011 and the LLC currently holds all of the outstanding shares of capital stock of GREC. GREC Entity HoldCo LLC (“GREC Holdco”), a wholly-owned subsidiary of GREC, was formed in Delaware, in June 2016. We are externally managed and advised by the advisor, a renewable energy, energy efficiency and sustainability related project acquisition, consulting and development company that is registered as an investment adviser under the Investment Advisers Act of 1940, as amended (“Advisers Act”). The LLC’s fiscal year end is December 31. The use of “we,” “us,” “our” and the “company” refers, collectively, to Greenbacker Renewable Energy Company LLC, Greenbacker Renewable Energy Corporation, and GREC Entity Holdco LLC. Pursuant to an initial Registration Statement on Form S-1 (File No. 333-178786-01), the company offered up to $1,500,000,000 in shares of limited liability company interests, or the shares, including up to $250,000,000 pursuant to a distribution reinvestment plan (“DRP”), through SC Distributors, LLC, the dealer manager. The offering pursuant to that initial Registration Statement terminated on February 7, 2017. Pursuant to a Registration Statement on Form S-1 (File No. 333-211571), the company is offering on a continuous basis up to $1,000,000,000 in shares of limited liability company interests, or the shares, including up to $200,000,000 of shares pursuant to the DRP, on a “best efforts” basis through the dealer manager, meaning it is not required to sell any specific number or dollar amount of shares. The company is publicly offering three classes of shares: Class A, C and I shares in any combination with a dollar value up to the maximum offering amount. In addition, the company is privately offering Class P-A and P-I shares. The share classes have different selling commissions, dealer manager fees and there is an ongoing distribution fee with respect to Class C shares. The company has adopted a DRP pursuant to which a shareholder owning publicly offered share classes may elect to have the full amount of cash distributions reinvested in additional shares. The company reserves the right to reallocate the offered shares within each offering between each and any share class and between its public offering and the DRP. Reference the LLC’s Prospectus Supplement No. 5 dated September 25, 2017 for additional information. On September 25, 2018 the company announced it will terminate its public offering of securities on or before April 30, 2019. While the company will only accept subscriptions for its’ public shares until the earlier of April 30, 2019 or the date when shares are no longer registered in an individual state under Blue Sky regulations, the dividend reinvestment plan and the share repurchase plan will continue to be available to investors. Each quarter, our advisor, utilizing the services of an independent valuation firm when necessary, reviews and approves the net asset value for each class of shares, subject to the oversight of the company’s board of directors. The company expects such determination will ordinarily be made within 30 days after each such completed fiscal quarter. To the extent that the net asset value per share on the most recent valuation date increases above or decreases below the net proceeds per share, the company will adjust the offering prices of all classes of shares. The adjustments to the per share offering prices, which will become effective five business days after such determination is published, will ensure that after the effective date of the new offering prices, the offering prices per share, after deduction of selling commissions, dealer manager fees and organization and offering expenses, are not above or below net asset value per share as of the most recent valuation date. The purchase price per share to be paid by each investor will be equal to the price that is in effect on the date such investor submits his or her completed subscription agreement. The company’s shares are offered in the primary offering at a price based on the most recent valuation, plus related selling commissions, dealer manager fees and organization and offering expenses. Five days after the completion of each quarter end valuation, shares will be offered pursuant to the DRP at a price equal to the current offering price per each class of shares, less the sales selling commissions and dealer manager fees associated with that class of shares in the primary offering. As of December 31, 2018, the company has made solar, wind and energy efficiency investments in 26 portfolios, 25 domiciled in the United States and one in Canada, as well as one energy efficiency secured loan in the United States (See Note 3). As of December 31, 2017, the company had made solar, wind and energy efficiency investments in 18 portfolios, 17 domiciled in the United States and one in Canada, as well as one energy efficiency secured loan in the United States.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Note 2. Significant Accounting Policies Basis of Presentation The company’s consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), which requires the use of estimates, assumptions and the exercise of subjective judgment as to future uncertainties. Actual results could differ from those estimates, assumptions, and judgments. Significant items subject to such estimates will include determining the fair value of investments, revenue recognition, income tax uncertainties, and other contingencies. The consolidated financial statements of the company include the accounts of the LLC and its consolidated subsidiaries, GREC, and GREC Holdco. All intercompany accounts and transactions have been eliminated. The company’s consolidated financial statements are prepared using the specialized accounting principles of Accounting Standards Codification Topic 946, Financial Services—Investment Companies (“ASC Topic 946”). In accordance with this specialized accounting guidance, the company recognizes and carries all of its investments at fair value with changes in fair value recognized in earnings. Additionally, the company will not apply the consolidation or equity method of accounting to its investments. The company carries its liabilities at amounts payable, net of unamortized premiums or discounts. The company does not currently plan to elect to carry its non-investment liabilities at fair value. Net assets are calculated as the carrying amounts of assets, including the fair value of investments, less the carrying amounts of its liabilities. The financial information associated with the December 31, 2018 consolidated financial statements has been prepared by management and, in the opinion of management, contains all adjustments and eliminations, consisting of only normal recurring adjustments, necessary for a fair presentation in accordance with GAAP. Cash and Cash Equivalents Cash consists of demand deposits at a financial institution. Such deposits may be in excess of the Federal Deposit Insurance Corporation insurance limits. The company has not experienced any losses in any such accounts. The company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Short-term investments that are cash equivalents, which are considered level 1 investments, are stated at cost, which approximates fair value. There are no restrictions on the use of the company’s cash as of December 31, 2018 and December 31, 2017. Foreign Currency Translation The accounting records of the company are maintained in U.S. Dollars. The fair value of investments and other assets and liabilities denominated in non-U.S. currencies are translated into U.S. Dollars using the exchange rate at the end of each reporting period. Amounts related to the purchases and sales of investments, investment income and expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. Net unrealized currency gains and losses arising from valuing foreign currency denominated assets and liabilities at the current exchange rate are reflected as part of net change in unrealized appreciation (depreciation) on translation of assets and liabilities denominated in foreign currencies in the consolidated statements of operations. Foreign security and currency translations may involve certain considerations and risks not typically associated with investing in U.S. companies and U.S. government securities. These risks include, but are not limited to, currency fluctuations and revaluations and future adverse political, social and economic developments, which could cause investments in foreign markets to be less liquid and prices more volatile than those of comparable U.S. companies or U.S. government securities. Valuation of Investments at Fair Value Accounting Standards Codification Topic 820, Fair Value Measurements and Disclosures (“ASC Topic 820”) defines fair value, establishes a framework for measuring fair value in accordance with GAAP and expands disclosures about fair value. The company recognizes and accounts for its investments at fair value. The fair value of the investments does not reflect transaction costs that may be incurred upon disposition of the investments. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is an exchange price notion under which fair value is the price in an orderly transaction between market participants to sell an asset or transfer a liability in the market in which the reporting entity would transact for the asset or liability. Pre-operational assets are held at cost until they operational. Therefore the fair value associated with these assets are essentially cost. The advisor has established procedures to estimate the fair value of its investments which the company’s board of directors has reviewed and approved. The company will use observable market data to estimate the fair value of investments to the extent that market data is available. In the absence of quoted market prices in active markets, or quoted market prices for similar assets in markets that are not active, the company will use the valuation methodologies described below with unobservable data based on the best available information in the circumstances, which incorporates the company’s assumptions about the factors that a market participant would use to value the asset. For investments for which quoted market prices are not available, which will comprise most of our investment portfolio, fair value will be estimated by using the income or market approach. The income approach is based on the assumption that value is created by the expectation of future benefits discounted to a current value and the fair value estimate is the amount an investor would be willing to pay to receive those future benefits. The market approach compares recent comparable transactions to the investment. Adjustments are made for any dissimilarity between the comparable transactions and the investments. These valuation methodologies involve a significant degree of judgment on the part of our advisor. In determining the appropriate fair value of an investment using these approaches, the most significant information and assumptions may include, as applicable: available current market data, including relevant and applicable comparable market transactions, applicable market yields and multiples, security covenants, call protection provisions, information rights, the nature and realizable value of any collateral, the investment’s ability to make payments, its earnings and discounted cash flows, the markets in which the project does business, comparisons of financial ratios of peer companies that are public, comparable merger and acquisition, the principal market and enterprise values, environmental factors, among other factors. The estimated fair values will not necessarily represent the amounts that may be ultimately realized due to the occurrence or nonoccurrence of future circumstances that cannot be reasonably determined. Because of the inherent uncertainty of the valuation of the investments, the estimate of fair values may differ significantly from the value that would have been used had a broader market for the investments existed. The authoritative accounting guidance prioritizes the use of market-based inputs over entity-specific inputs and establishes a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation. The three levels of valuation hierarchy are defined as follows: Level 1: Unadjusted quoted prices for identical assets or liabilities in active markets. Level 2: Other significant observable inputs that are sourced either directly or indirectly from publications or pricing services, including dealer or broker markets, for identical or comparable assets or liabilities. Generally, these inputs should be widely accepted and public, non-proprietary and sourced from an independent third party. Level 3: Inputs derived from a significant amount of unobservable market data and derived primarily through the use of internal valuation methodologies In all cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls will be determined based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of an input to the fair value measurement in its entirety requires judgment and considers factors specific to each investment. Calculation of Net Asset Value Net asset value by share class is calculated by subtracting total liabilities for each class from the total carrying amount of all assets for that class, which includes the fair value of investments. Net asset value per share is calculated by dividing net asset value for each class by the total number of outstanding common shares for that class on the reporting date. Earnings (Loss) per Share In accordance with the provisions of ASC Topic 260 — Earnings per Share (“ASC Topic 260”), basic earnings per share is computed by dividing earnings available to common equityholders by the weighted average number of shares outstanding during the period. Other potentially dilutive common shares, and the related impact to earnings, are considered when calculating earnings per share on a diluted basis. The following information sets forth the computation of the weighted average basic and diluted net increase in net assets attributed to common equityholders per share for the years ended December 31, 2018, 2017 and 2016. For the year ended December 31, 2018 For the year ended December 31, 2017 For the year ended December 31, 2016 Basic and diluted Net increase in net assets resulting from operations attributed to common equityholders $ 13,314,380 $ 11,330,663 $ 8,014,196 Weighted average common shares outstanding 29,799,735 18,922,343 11,043,156 Net increase in net assets resulting from operations attributed to common equityholders per share $ 0.45 $ 0.60 $ 0.73 Revenue Recognition Interest income is recorded on an accrual basis to the extent the company expects to collect such amounts. Interest receivable on loans and debt securities is not accrued for accounting purposes if there is reason to doubt an ability to collect such interest. Original issue discounts, market discounts or market premiums are accreted or amortized using the effective interest method as interest income. Prepayment premiums on loans and debt securities are recorded as interest income when received. Any application, origination or other fees earned by the company in arranging or issuing debt are amortized over the expected term of the loan. Loans are placed on non-accrual status when principal and interest are past due 90 days or more or when there is a reasonable doubt that principal or interest will be collected. Accrued interest is generally reversed when a loan is placed on non-accrual. Interest payments received on non-accrual loans may be recognized as income or applied to principal depending upon management’s judgment. Non-accrual loans are generally restored to accrual status when past due and principal and interest is paid and, in management’s judgment, is likely to remain current. Dividend income is recorded (1) on the ex-dividend date for publicly issued securities and (2) when received from private investments. The timing and amount of dividend income is determined on at least a quarterly basis by GREC. This process includes an analysis at the individual SPV level based on cash available from operations and working capital ratios needed for the SPVs daily operations. Dividend income from our privately held, equity investments are recognized when approved. Dividends received from the company’s private investments, which generally reflect net cash flow from operations, are declared, accrued and paid on a quarterly basis at a minimum. Net Realized Gains or Losses and Net Change in Unrealized Appreciation or Depreciation on Investments Realized gains or losses will be measured as the difference between the net proceeds from the sale, repayment, or disposal of an asset and the adjusted cost basis of the asset, without regard to unrealized appreciation or depreciation previously recognized. Net change in unrealized appreciation or depreciation will reflect the change in investment values during the reporting period, including any reversal of previously recorded unrealized appreciation or depreciation, when gains or losses are realized. Payment-in-Kind Interest For loans and debt securities with contractual payment-in-kind interest, any interest will be added to the principal balance of such investments and be recorded as income, if the valuation indicates that such interest is collectible. Distribution Policy Distributions to members, if any, will be authorized and declared by our board of directors quarterly in advance and paid monthly. From time to time, we may also pay interim special distributions in the form of cash or shares, with the approval of our board of directors. Distributions will be made on all classes of shares at the same time. The cash distributions with respect to the Class C shares will be lower than the cash distributions with respect to the company’s other publicly offered share classes because of the distribution fee associated with the Class C shares, which is allocated specifically to Class C net assets. Amounts distributed to each class are allocated amongst the holders of the shares in such class in proportion to their shares. Distributions declared by our board of directors are recognized as distribution liabilities on the ex-dividend date. Organization and Offering Costs Organization and offering costs (“O&O costs”), other than sales commissions and the dealer manager fee, are initially being paid by our advisor and/or dealer manager on behalf of the company. These O&O costs include all costs previously paid or to be paid by the company in connection with its formation and the offering of its shares pursuant to now terminated Registration Statement on Form S-1 (File No. 333-178786-01), the current Registration Statement on Form S-1 (File No. 333-211571) and a private placement memorandum, including legal, accounting, printing, mailing and filing fees, charges of the company’s escrow holder, transfer agent fees, due diligence expense reimbursements to participating broker-dealers included in detailed and itemized invoices and costs in connection with administrative oversight of the offering and marketing process, and preparing supplemental sales materials, holding educational conferences, and attending retail seminars conducted by broker-dealers. While the total O&O costs for each public offering shall be reasonable and shall in no event exceed an amount equal to 15% of the gross proceeds of such offering and the DRP, the company is targeting no more than 4.0% of the gross proceeds for O&O costs other than sales commissions and dealer manager fees in the current Registration Statement. The company is obligated to reimburse our advisor for O&O costs that it incurs on behalf of the company, in accordance with the advisory agreement, but only to the extent that the reimbursement would not cause the selling commissions, the dealer manager fee and the other organization and offering expenses borne by the company to exceed 15% of gross offering proceeds as of the date of reimbursement. Total O&O costs related to the terminated Registration Statement amounted to approximately $7,556,000 or 4.8% of gross offering proceeds raised pursuant to such Registration Statement. The costs incurred by our advisor and/or dealer manager are recognized as a liability of the company to the extent that the company is obligated to reimburse our advisor and/or dealer manager, subject to the 15% of gross offering proceeds limitation described above. When recognized by the company, organizational costs are expensed and offering costs, excluding selling commissions and dealer manager fees, are recognized as a reduction of the proceeds from the offering. The following table provides information in regard to the status of O&O costs (in 000’s) as of December 31, 2018 and 2017: December 31, 2018 December 31, 2017 Total O&O Costs Incurred by the Advisor and Dealer Manager $ 9,371 $ 8,671 Amounts previously reimbursed to the Advisor/Dealer Manager by the company 9,106 8,381 Amounts payable to Advisor/Dealer Manager by the company 19 10 Amounts of the contingent liability subject to payment by the company only upon adequate gross offering proceeds being raised 246 280 Financing Costs Financing costs related to debt liabilities incurred by the company, GREC or any wholly-owned holding company formed specifically to be a credit agreement counterparty are presented on the consolidated statements of assets and liabilities as a direct deduction from the carrying amount of that debt liability. Financing costs are deferred and amortized using the straight-line method over the life of the debt liability. Capital Gains Incentive Allocation and Distribution Pursuant to the terms of the LLC’s amended and restated limited liability company agreement, a capital gains incentive fee will be earned by an affiliate of our advisor on realized gains (net of realized and unrealized losses) since inception from the sale of investments from the company’s portfolio during operations prior to a liquidation of the company. While the terms of the advisory agreement neither include nor contemplate the inclusion of unrealized gains in the calculation of the capital gains incentive fee, the company will include unrealized gains in the calculation of the capital gains incentive distribution pursuant to an interpretation of an American Institute for Certified Public Accountants Technical Practice Aid for investment companies. This amount reflects the incentive distribution that would be payable if the company’s entire portfolio was liquidated at its fair value as of the consolidated statements of assets and liabilities date even though the advisor is not entitled to an incentive distribution with respect to unrealized gains unless and until such gains are realized. Thus, on each date that net asset value is calculated, the company calculates for the capital gains incentive distribution by calculating such distribution as if it were due and payable as of the end of such period and reflected as an allocation of equity between common equityholders and the Special Unitholder. As of December 31, 2018 and 2017, a capital gains incentive distribution allocation in the amounts of $1,797,138 and $1,236,243, respectively, was recorded in the consolidated statements of assets and liabilities as Special unitholder’s equity. Deferred Sales Commissions The company defers certain costs, principally sales commissions and related compensation, which are paid to the dealer manager and may be reallowed to financial advisors and broker/dealers in the future in connection with the sale of Class C shares sold with a reduced front-end load sales charge. The costs expected to be incurred at the time of the sale of Class C shares are recorded as a liability on the date of sale and are amortized on a straight-line basis over the period beginning at the time of sale and ending on the date which approximates an expected liquidity event for the company. As of December 31, 2018 and December 31, 2017, the company recorded a liability for deferred sales commissions in the amount of $191,706 and $249,858, respectively. Reclassifications Certain prior year amounts have been reclassified to conform with current year presentation. Derivative Instruments The company may utilize interest rate swaps to modify interest rate characteristics of existing debt obligations to manage interest rate exposure. These are recorded at fair value either as assets or liabilities in the accompanying consolidated statements of assets and liabilities with changes in the fair value of interest rate swaps during the period recognized as either an unrealized appreciation or depreciation in the accompanying consolidated statements of operations. The fair value of interest rate swap contracts open as of December 31, 2018 is included on the schedule of investments by contract. For the year ended December 31, 2018, the company’s average monthly notional exposure to interest rate swap contracts was $58,080,777. Consolidated Statements of Assets and Liabilities — Values of Derivatives at December 31, 2018 Asset Derivatives Liability Derivatives Risk Exposure Consolidated Statement of Assets and Liabilities Location Fair Value Consolidated Statement of Assets and Liabilities Location Fair Value Swaps Interest Rate Risk Swap contracts, at fair value $ 435,603 Swap contracts, at fair value $ 311,641 $ 435,603 $ 311,641 The effect of derivative instruments on the Consolidated Statements of Operations Risk Exposure Change in net unrealized depreciation on derivative transactions for the year ended December 31, 2018 Swaps Interest Rate Risk $ 32,106 $ 32,106 By using derivative instruments, the company is exposed to the counterparty’s credit risk — the risk that derivative counterparties may not perform in accordance with the contractual provisions offset by the value of any collateral received. The company’s exposure to credit risk associated with counterparty non-performance is limited to collateral posted and the unrealized gains inherent in such transactions that are recognized in the consolidated statement of assets and liabilities. The company minimizes counterparty credit risk through credit monitoring procedures and managing margin and collateral requirements, as appropriate. In regard to our investment in the Canadian Northern Lights Portfolio, we have foreign currency risk related to our revenue and operating expenses which are denominated in the Canadian Dollars as opposed to the U.S. Dollars. While we are currently of the opinion that the currency fluctuation between the Canadian and U.S. Dollar will not have a material impact on our operating results, we may in the future hedge this risk through the use of currency swap transactions or other financial instruments if the impact on our results of operations becomes material. Income Taxes The LLC intends to operate so that it will qualify to be treated as a partnership for U.S. federal income tax purposes under the Internal Revenue Code. As such, it will not be subject to any U.S. federal and state income taxes. In any year, it is possible that the LLC will not meet the qualifying income exception and will not qualify to be treated as a partnership. If the LLC does not meet the qualifying income exception, the members would then be treated as stockholders in a corporation and the company would become taxable as a corporation for U.S. federal income tax purposes under the Internal Revenue Code. The LLC would be required to pay income tax at corporate rates on its net taxable income. Distributions to members from the LLC would constitute dividend income taxable to such members, to the extent of the company’s earnings and profits and the payment of the distributions would not be deductible by the LLC. The LLC plans to conduct substantially all its operations through its wholly-owned subsidiary, GREC, which is a corporation that is subject to U.S. federal, state and local income taxes. Accordingly, most of its operations will be subject to U.S. federal, state and local income taxes. Income taxes are accounted for under the assets and liabilities method. Deferred tax assets and liabilities are recorded for the estimated future tax consequences attributable to differences between items that are recognized in the consolidated financial statements and tax returns in different years. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. For income tax benefits to be recognized including uncertain tax benefits, a tax position must be more-likely-than-not to be sustained upon examination by taxing authorities. The amount recognized is measured as the largest amount of the benefit that is more likely than not to be realized upon ultimate settlement. A valuation allowance is established against net deferred tax assets if, based on the weight of available evidence, it is more likely than not that some or all of the net deferred tax assets will not be realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. Interest and penalties associated with income taxes, if any, will be recognized in general and administrative expense. The company does not consolidate its investments for financial statements, rather it accounts for its investments at fair value under the specialized accounting of ASC Topic 946. The tax attributes of the individual investments will be considered and incorporated in the company’s fair value estimates for those investments. The amounts recognized in the consolidated financial statements for unrealized appreciation and depreciation will result in a difference between the consolidated financial statements and the cost basis of the assets for tax purposes. These differences will be recognized as deferred tax assets and liabilities. Generally, the entities that hold the company’s investments will be included in the consolidated tax return of GREC and the differences between the amounts recognized for financial statement purposes and the tax return will be recognized as additional deferred tax assets and liabilities. The company follows the authoritative guidance on accounting for uncertainty in income taxes and concluded it has no material uncertain tax positions to be recognized at this time. The company assessed its tax positions for all open tax years as of December 31, 2018 for all U.S. federal and state tax jurisdictions for the years 2014 through 2018. The results of this assessment are included in the company’s tax provision and deferred tax assets as of December 31, 2018. Recently Adopted Accounting Pronouncements In December 2016, the FASB issued ASU 2016-20, Technical Corrections and Improvements to Topic 606-Revenue from Contracts with Customers (ASU 2014-09). The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for the goods or services. The ASU will replace most of the existing revenue recognition guidance under US GAAP. The amendments in ASU 2014-09 are effective for public companies for interim and annual periods in fiscal years beginning after December 15, 2017, with early adoption permitted for interim and annual periods in fiscal years beginning after December 15, 2016. The Company adopted the standard on January 1, 2018 utilizing the cumulative effective transition method. The adoption of the standard did not have an impact on the Company’s consolidated financial statements and disclosures. See Revenue Recognition section for additional information on the Company’s revenue recognition accounting policies. Recently Issued Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 outlines a new model for accounting by lessees, whereby their rights and obligations under substantially all leases, existing and new, would be capitalized and recorded on the balance sheet. For lessors, however, the accounting remains largely unchanged from the current model, with the distinction between operating and financing leases retained, but updated to align with certain changes to the lessee model and the new revenue recognition standard. The new standard also replaces existing sale-leaseback guidance with a new model applicable to both lessees and lessors. Additionally, the new standard requires extensive quantitative and qualitative disclosures. ASU 2016-02, as amended by ASU 2017-13, is effective for U.S. GAAP public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years; for all other entities, the final lease standard will be effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early application will be permitted for all entities. The new standard must be adopted using a modified retrospective transition of the new guidance and provides for certain practical expedients. Transition will require application of the new model at the beginning of the earliest comparative period presented. The adoption of the standard will not have a material impact on the Company’s consolidated financial statements and disclosures. In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement”, which modifies the disclosure requirements on fair value measurements. The new guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 (fiscal 2020 for the Company). Upon the effective date, certain provisions are to be applied prospectively, while others are to be applied retrospectively to all periods presented. An entity is permitted to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. We are currently evaluating the impact of the amendments on our consolidated financial statement disclosures. Since the amendments impact only disclosure requirements, we do not expect the amendments to have an impact on our consolidated financial statements. In August 2018, the SEC issued a final rule to amend certain disclosure requirements that were redundant, duplicative, overlapping or superseded by other SEC disclosure requirements, US GAAP or IFRS. The amendments generally eliminated or otherwise reduced certain disclosure requirements of various SEC rules and regulations. However, in some cases, the amendments require additional information to be disclosed, including changes in stockholders’ equity in interim periods. The adoption of the requirement will not have a material impact on the Company’s consolidated financial statements and disclosures. The Company will be adopting the requirements during the first quarter of 2019.

Investments

Investments	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Investments	Note 3. Investments The composition of the company’s investments as of December 31, 2018, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio Commercial Solar: East to West Solar Portfolio $ 37,079,887 $ 33,665,088 10.9 % Foresight Solar Portfolio 13,650,000 14,357,201 4.7 Golden Horizons Solar Portfolio 9,400,000 14,445,071 4.7 Green Maple Portfolio 17,582,823 16,066,837 5.2 Magnolia Sun Portfolio 10,775,000 8,258,786 2.7 Midway III Solar Portfolio 11,552,904 13,265,608 4.3 Raleigh Portfolio 20,822,198 21,358,997 7.0 Six States Solar Portfolio 12,470,306 13,440,025 4.4 Sun Farm Portfolio 10,514,960 11,606,877 3.8 Sunny Mountain Portfolio 884,578 1,107,041 0.4 Subtotal $ 144,732,656 $ 147,571,531 48.1 % Residential Solar: Canadian Mountain Portfolio $ 1,603,136 $ 2,081,554 0.6 % Enfinity Colorado DHA Portfolio 1,400,000 1,700,728 0.6 Greenbacker Residential Solar Portfolio 28,100,000 27,372,253 8.9 Greenbacker Residential Solar Portfolio II 6,400,000 10,763,559 3.5 Subtotal $ 37,503,136 $ 41,918,094 13.6 % Wind: Greenbacker Wind Portfolio - California $ 9,500,000 $ 8,070,745 2.6 % Greenbacker Wind Portfolio - Idaho 7,320,000 6,385,631 2.1 Greenbacker Wind Portfolio - Montana 21,709,487 21,956,868 7.1 Greenbacker Wind Portfolio - Vermont 24,917,193 28,752,500 9.4 Subtotal $ 63,446,680 $ 65,165,744 21.2 % Pre-Operational Assets: Colorado CSG Solar Portfolio $ 27,333,205 $ 27,215,170 8.9 % Phoenix Solar Portfolio 9,964,515 9,964,515 3.2 SE Solar Portfolio 7,178,207 7,178,207 2.3 Turquoise Solar Portfolio 5,877,188 5,877,188 1.9 Subtotal $ 50,353,115 $ 50,235,080 16.3 % Other Investments: $ 1,279,273 $ 1,263,620 0.4 % Energy Efficiency: GREC Energy Efficiency Portfolio $ 447,885 $ 470,406 0.2 % Renew AEC One, LLC 551,640 551,640 0.2 Subtotal $ 999,525 $ 1,022,046 0.4 % Total $ 298,314,385 $ 307,176,115 100.0 % The composition of the company’s investments as of December 31, 2017, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio Commercial Solar: East to West Solar Portfolio $ 27,934,875 $ 27,200,000 12.4 % Foresight Solar Portfolio 13,200,071 13,200,071 6.0 Golden Horizons Solar Portfolio 9,450,000 9,482,075 4.3 Green Maple Portfolio 13,075,000 11,956,821 5.5 Magnolia Sun Portfolio 10,775,000 9,635,508 4.4 Midway III Solar Portfolio 10,093,861 10,093,861 4.6 Raleigh Portfolio 20,672,198 22,850,465 10.4 Six States Solar Portfolio 4,770,306 4,756,893 2.3 Sunny Mountain Portfolio 884,578 1,205,439 0.6 Subtotal $ 110,855,889 $ 110,381,133 50.5 % Residential Solar: Canadian Mountain Portfolio $ 1,603,136 $ 2,093,827 1.0 % Enfinity Colorado DHA Portfolio 1,400,000 1,671,317 0.8 Greenbacker Residential Solar Portfolio 28,100,000 28,373,526 13.0 Greenbacker Residential Solar Portfolio II 6,400,000 7,986,014 3.7 Subtotal $ 37,503,136 $ 40,124,684 18.5 % Wind: Greenbacker Wind Portfolio - California $ 9,500,000 $ 9,506,752 4.3 % Greenbacker Wind Portfolio - Idaho 7,320,000 6,799,153 3.0 Greenbacker Wind Portfolio - Montana 21,609,488 23,228,136 10.6 Greenbacker Wind Portfolio - Vermont 24,417,193 27,168,808 12.6 Subtotal $ 62,846,681 $ 66,702,849 30.5 % Energy Efficiency: GREC Energy Efficiency Portfolio $ 482,450 $ 504,637 0.2 % Renew AEC One, LLC 672,871 672,871 0.3 Subtotal $ 1,155,321 $ 1,177,508 0.5 % Total $ 212,361,027 $ 218,386,174 100.0 % The counterparty to all the energy efficiency investments held by the company as of December 31, 2018 and December 31, 2017 is a related party (See Note 5). The composition of the company’s investments as of December 31, 2018 by geographic region, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio United States: East Region $ 65,082,005 $ 67,541,264 22.0 % Mid-West Region 1,796,801 1,846,346 0.6 Mountain Region 69,619,383 69,553,178 22.6 South Region 98,476,770 95,332,608 31.0 West Region 61,736,290 70,821,165 23.1 Total United States $ 296,711,249 $ 305,094,561 99.3 % Canada: 1,603,136 2,081,554 0.7 Total $ 298,314,385 $ 307,176,115 100.0 % The composition of the company’s investments as of December 31, 2017 by geographic region, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio United States: East Region $ 59,828,924 61,876,000 28.3 % Mid-West Region 1,022,813 1,010,292 0.5 Mountain Region 40,588,577 42,220,262 19.3 South Region 57,033,202 57,716,376 26.4 West Region 52,284,375 53,469,417 24.5 Total United States $ 210,757,891 216,292,347 99.0 % Canada: 1,603,136 2,093,827 1.0 Total $ 212,361,027 218,386,174 100.0 % The composition of the company’s investments as of December 31, 2018 by industry, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio Commercial Solar $ 144,732,656 $ 147,571,531 48.1 % Residential Solar 37,503,136 41,918,094 13.6 Wind 63,446,680 65,165,744 21.2 Pre-Operational Assets 50,353,115 50,235,080 16.3 Other Investments 1,279,273 1,263,620 0.4 % Energy Efficiency 999,525 1,022,046 0.4 Total $ 298,314,385 $ 307,176,115 100.0 % The composition of the company’s investments as of December 31, 2017 by industry, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio Commercial Solar $ 110,855,889 $ 110,381,133 50.5 % Residential Solar 37,503,136 40,124,684 18.5 Wind 62,846,681 66,702,849 30.5 Energy Efficiency 1,155,321 1,177,508 0.5 Total $ 212,361,027 $ 218,386,174 100 % Investments held as of December 31, 2018 and 2017 are considered Control Investments, which are defined as investments in companies in which the company owns 25% or more of the voting securities of such company, have greater than 50% representation on such company’s board of directors, or investments in limited liability companies for which the company serves managing member.

Fair Value Measurements - Inves

Fair Value Measurements - Investment	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements - Investments	Note 4. Fair Value Measurements — Investments The following table presents fair value measurements of investments, by major class, as of December 31, 2018 according to the fair value hierarchy: Valuation Inputs Level 1 Level 2 Level 3 Fair Value Limited Liability Company Member Interests $ — $ — $ 304,542,921 $ 304,542,921 Capital Stock — — 2,081,554 2,081,554 Energy Efficiency Secured Loans — — 551,640 551,640 Total $ — $ — $ 307,176,115 $ 307,176,115 Other Financial Instruments* Unrealized appreciation on open interest rate swap contracts $ — $ 435,603 $ — $ 435,603 Unrealized depreciation on open interest rate swap contracts $ — $ (311,641 ) $ — $ (311,641 ) Total $ — $ 123,962 $ — $ 123,962 * Other financial instruments are derivatives, such as futures, forward currency contracts and swaps. These instruments are reflected at the unrealized appreciation (depreciation) on the instrument. The following table presents fair value measurements of investments, by major class, as of December 31, 2017 according to the fair value hierarchy: Valuation Inputs Level 1 Level 2 Level 3 Fair Value Limited Liability Company Member Interests $ — $ — $ 215,619,476 $ 215,619,476 Capital Stock — — 2,093,827 2,093,827 Energy Efficiency Secured Loans — — 672,871 672,871 Total $ — $ — $ 218,386,174 $ 218,386,174 Other Financial Instruments* Unrealized appreciation on open interest rate swap contracts $ — $ 156,068 $ — $ 156,068 Total $ — $ 156,068 $ — $ 156,068 * Other financial instruments are derivatives, such as futures, forward currency contracts and swaps. These instruments are reflected at the unrealized appreciation (depreciation) on the instrument. The following table provides a reconciliation of the beginning and ending balances for investments that use Level 3 inputs for the year ended December 31, 2018: Balance as of December 31, 2017 Net change in unrealized appreciation on investments Realized gain Translation of assets and liabilities denominated in foreign currencies Purchases and other adjustments to cost (1) Sales and Repayments of investments (2) Balance as of December 31, 2018 Limited Liability Company Member Interests $ 215,619,476 $ 2,848,856 $ — $ — $ 90,574,589 $ (4,500,000 ) $ 304,542,921 Capital Stock 2,093,827 106,223 — (118,496 ) — — 2,081,554 Energy Efficiency – Secured Loans 672,871 — — — — (121,231 ) 551,640 Total $ 218,386,174 $ 2,955,079 $ — $ (118,496 ) $ 90,574,589 $ (4,621,231 ) $ 307,176,115 (1) Includes purchases of new investments, capitalized deal costs, effects of purchase price adjustments, paid-in-kind interest, return of capital and additional investments in existing investments, if any. (2) Includes principal repayments on loans. The total change in unrealized appreciation included in the consolidated statements of operations within net change in unrealized appreciation on investments and foreign currency translation for the year ended December 31, 2018 attributable to Level 3 investments still held at December 31, 2018 was $2,836,583. Reclassifications impacting Level 3 of the fair value hierarchy are reported as transfers in or out of the Level 3 as of the beginning of the period which the reclassifications occur. There were no reclassifications attributable to Level 3 investments during the year ended December 31, 2018. The total net change in unrealized appreciation at fair value for the year ended 31, 2018 was $2,804,477. The following table provides a reconciliation of the beginning and ending balances for investments that use Level 3 inputs for the year ended December 31, 2017: Net change in unrealized Translation of assets and liabilities Purchases Sales and Balance as of appreciation denominated and other Repayments Balance as of December 31, on Realized in foreign adjustments of December 31, 2016 investments gain currencies to cost (1) investments (2) 2017 Limited Liability Company Member Interests $ 112,536,561 $ 5,748,138 $ 693,882 $ — $ 127,038,601 (30,397,706 ) 215,619,476 Capital Stock 1,815,169 180,895 — 97,763 — — 2,093,827 Energy Efficiency – Secured Loans 771,371 — — — — (98,500 ) 672,871 Total $ 115,123,101 $ 5,929,033 $ 693,882 $ 97,763 $ 127,038,601 $ (30,496,206 ) $ 218,386,174 (3) Includes purchases of new investments, capitalized deal costs, effects of purchase price adjustments, paid-in-kind interest, return of capital and additional investments in existing investments, if any. (4) Includes principal repayments on loans. The total change in unrealized appreciation included in the consolidated statements of operations within net change in unrealized appreciation on investments for the year ended December 31, 2017 attributable to Level 3 investments and foreign currency translation still held at December 31, 2017 was $6,026,796. Reclassifications impacting Level 3 of the fair value hierarchy are reported as transfers in or out of the Level 3 as of the beginning of the period which the reclassifications occur. There were no reclassifications attributable to Level 3 investments during the year ended December 31, 2017. The total net change in unrealized appreciation at fair value for the year ended December 31, 2017 was $6,092,167. The following table provides a reconciliation of the beginning and ending balances for investments that use Level 3 inputs for the year ended December 31, 2016: Translation Net change of assets and in unrealized liabilities Purchases Sales and Balance as of appreciation denominated and other Repayments Balance as of December 31, (depreciation) Realized in foreign adjustments of December 31, 2015 on investments gain currencies to cost (1) investments (2) Transfers in Transfers out 2016 Limited Liability Company Member Interests $ 48,708,304 $ (1,685,280 ) $ 4,578 $ — $ 39,115,694 $ (40,000 ) $ 26,433,265 $ — $ 112,536,561 Capital Stock 1,562,967 211,499 — 40,703 — — — — 1,815,169 Energy Efficiency – Secured Loans 1,183,295 — — — — (314,137 ) — (97,787 ) 771,371 Secured Loans – Other — — — — 26,335,478 — — (26,335,478 ) — Total $ 51,454,566 $ (1,473,781 ) $ 4,578 $ 40,703 $ 65,451,172 $ (354,137 ) $ 26,433,265 $ (26,433,265 ) $ 115,123,101 (1) Includes purchases of new investments, capitalized deal costs, effects of purchase price adjustments, paid-in-kind interest, return of capital and additional investments in existing investments, if any. (2) Includes principal repayments on loans. The total change in unrealized depreciation included in the consolidated statements of operations within net change in unrealized depreciation on investments for the year ended December 31, 2016 attributable to Level 3 investments still held at December 31, 2016 was $1,433,078. Reclassifications impacting Level 3 of the fair value hierarchy are reported as transfers in or out of the Level 3 as of the beginning of the period which the reclassifications occur. The total net change in unrealized depreciation at fair value for the year ended December 31, 2016 was $1,342,381. As of December 31, 2018, all of the company’s portfolio investments utilized Level 3 inputs. The following table presents the quantitative information about Level 3 fair value measurements of the company’s investments as of December 31, 2018: Fair Value Valuation Techniques Unobservable Inputs Rates/Assumptions Commercial Solar $ 147,571,531 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 7.75% - 8.50%, 0.50% annual degradation in production, 22.2 - 35 years Residential Solar $ 41,918,094 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 7.25% - 11%, 0.50% annual degradation in production, 12.2 - 33 years Wind $ 65,165,744 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 8.50%, no annual degradation in production, 24 - 27.7 years Pre-Operational Assets $ 51,498,700 Transaction cost Not Applicable Not Applicable Other Investments $ 1,263,620 Transaction cost Not Applicable Not Applicable Energy Efficiency $ 1,022,046 Income and collateral based approach Market yields and value of collateral 10.25% - 20.40% As of December 31, 2017, all of the company’s portfolio investments utilized Level 3 inputs. The following table presents the quantitative information about Level 3 fair value measurements of the company’s investments as of December 31, 2017: Fair Value Valuation Techniques Unobservable Inputs Rates/Assumptions Commercial Solar $ 87,087,201 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 7.25% - 9.25%, 0.50% annual degradation in production, 13.5 - 34.3 years Commercial Solar $ 23,293,932 Transaction cost Not Applicable Not Applicable Residential Solar $ 40,124,684 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 7.25% - 9.25%, 0.50% annual degradation in production, 13.5 - 34.3 years Wind $ 66,702,849 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 8.50%, no annual degradation in production, 27.9 - 29.0 years Energy Efficiency $ 1,177,508 Income and collateral based approach Market yields and value of collateral 10.25% - 20.40% GREC utilizes primarily proprietary discounted cash flow pricing models in the fair value measurement of the company’s investments. Significant unobservable inputs include discount rates and estimates related to the future production of electricity. Significant increases or decreases in discount rates used or actual kilowatt hour production can significantly increase or decrease the fair value measurement

Related Party Agreements And Tr

Related Party Agreements And Transactions Agreements	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Agreements And Transactions Agreements	Note 5. Related Party Agreements And Transactions Agreements The company has executed advisory and administration agreements with the advisor and Greenbacker Administration, LLC, our administrator, respectively, as well as a dealer manager agreement with the dealer manager, which entitles the advisor, certain affiliates of the advisor, and the dealer manager to specified fees upon the provision of certain services with regard to the offering of the company’s shares and the ongoing management of the company as well as reimbursement of O&O costs incurred by the advisor and the dealer manager on behalf of the company (as discussed in Note 2) and certain other operating costs incurred by the advisor on behalf of the company. The term “Special Unitholder” refers to GREC Advisors, LLC, a Delaware limited liability company, which is a subsidiary of our advisor and “special unit”, refers to the special unit of limited liability company interest in GREC entitling the Special Unitholder to an incentive allocation and distribution. In addition, the company and the advisor entered into an expense reimbursement agreement whereby the advisor agreed to reimburse the company for certain expenses above certain limits and be repaid when the company’s expenses are reduced below that threshold. The expense reimbursement agreement expired and was not renewed as of December 31, 2016. The fees and reimbursement obligations are as follows: Type of Compensation and Recipient Determination of Amount Selling Commissions — Dealer Manager Up to 7% of gross offering proceeds from the sale of Class A shares, up to 3% of gross offering proceeds from the sale of Class C shares, and up to 6% of gross offering proceeds from the sale of Class P-A shares. No selling commission will be paid with respect to Class I and Class P-I shares or for sales pursuant to the dividend reinvestment plan. All of its selling commissions are expected to be re-allowed to participating broker-dealers. Dealer Manager Fee — Dealer Manager Up to 2.75% of gross offering proceeds from the sale of Class A and C shares, and up to 1.75% of gross offering proceeds from the sale of Class I shares. No dealer manager fee will be paid for sales pursuant to the dividend reinvestment plan. The dealer manager may re-allow a portion of its dealer manager fee to selected broker-dealers. Distribution Fee — Dealer Manager With respect to Class C shares only, the company will pay the dealer manager a distribution fee that accrues daily in an amount equal to 1/365 th O&O costs — Advisor The company reimburses the advisor for the O&O costs (other than selling commissions and dealer manager fees) it has incurred on the company’s behalf only to the extent that the reimbursement would not cause the selling commissions, dealer manager fee and the other O&O costs borne by the company to exceed 15.0% of the gross offering proceeds as the amount of proceeds increases. While the company has targeted an offering expense ratio of 4.0% for O&O costs over the term of the current offering, 4.8% was charged on the offering that terminated as of February 7, 2017. Base Management Fees — Advisor The base management fee payable to GCM will be calculated at a monthly rate of 0.167% (2.00% annually) of our gross assets (including amounts borrowed). For services rendered under the advisory agreement, the base management fee will be payable monthly in arrears. The base management fee will be calculated based on the average of the values of our gross assets for each day of the prior month. Base management fees for any partial period will be appropriately pro-rated. The base management fee may be deferred or waived, in whole or part, at the election of the advisor. All or any part of the deferred base management fee not taken as to any period shall be deferred without interest and may be taken in any period prior to the occurrence of a liquidity event as the advisor shall determine in its sole discretion. Type of Compensation and Recipient Determination of Amount Incentive Allocation and Distribution — Special Unitholder The incentive distribution to which the Special Unitholder is be entitled to will be calculated and payable quarterly in arrears based on the pre-incentive distribution net investment income for the immediately preceding fiscal quarter. For this purpose, pre-incentive distribution net investment income means interest income, dividend and distribution income from equity investments (excluding that portion of distributions that are treated as return of capital) and any other income (including any other fees, such as commitment, origination, structuring, diligence and consulting fees or other fees that we receive, but excluding any fees for providing managerial assistance) accrued during the fiscal quarter, minus the operating expenses for the fiscal quarter (including the base management fee, expenses payable under the administration agreement with the company’s Administrator, and any interest expense and distributions paid on any issued and outstanding indebtedness and preferred units of limited liability company interest, but excluding the incentive distribution). Pre-incentive distribution net investment income does not include any realized capital gains, realized capital losses, unrealized capital appreciation or depreciation or any accrued income taxes and other taxes including, but not limited to, franchise, property, and sales taxes. Pre-incentive distribution net investment income, expressed as a rate of return on the value of the company’s average adjusted capital at the end of the immediately preceding fiscal quarter, will be compared to a “hurdle rate” of 1.75% per fiscal quarter (7.00% annualized). Adjusted capital shall mean: cumulative gross proceeds before sales and commission and dealer fees, generated from sales of the company’s shares and preferred units of limited liability company interests (including the DRP) reduced for distributions to members of proceeds from non-liquidation dispositions of asset and amount paid for share repurchases pursuant to the Share Repurchase Program. Average adjusted capital shall mean: the average value of the adjusted capital for the two most recently completed fiscal quarters. The Special Unitholder shall receive an incentive distribution with respect to the pre-incentive distribution net investment income in each fiscal quarter as follows: ● no incentive distribution in any fiscal quarter in which the pre-incentive distribution net investment income does not exceed the “hurdle rate” of 1.75%; ● 100% of the pre-incentive distribution net investment income with respect to that portion of such pre-incentive distribution net investment income, if any, that exceeds the hurdle but is less than 2.1875% in any fiscal quarter (8.75% annualized with a 7% annualized hurdle rate). The company refers to this portion of the pre-incentive distribution net investment income (which exceeds the hurdle but is less than 2.1875%) as the “catch-up.” The “catch- up” is meant to provide the advisor with 20% of the pre-incentive distribution net investment income as if a hurdle did not apply if the net investment income exceeds 2.1875% in any fiscal quarter; and Type of Compensation and Recipient Determination of Amount ● 20% of the amount of the pre-incentive distribution net investment income, if any, that exceeds 2.1875% in any fiscal quarter (8.75% annualized with a 7% annualized hurdle rate) is payable to the Special Unitholder (once the hurdle is reached and the catch-up is achieved, 20% of all pre-incentive distribution investment income thereafter is allocated to the Special Unitholder). Capital Gains Incentive Distribution — Special Unitholder The capital gains incentive distribution will be determined and payable to the Special Unitholder in arrears as of the end of each fiscal quarter (or upon termination of the advisory agreement, as of the termination date) to the Special Unitholder, and will equal 20.0% of the company’s realized capital gains, if any, on a cumulative basis from inception through the end of each fiscal quarter, computed net of all realized capital losses and unrealized capital depreciation on a cumulative basis, less the aggregate amount of any capital gain incentive distributions. Liquidation Incentive Distribution — Special Unitholder The liquidation incentive distribution payable to the Special Unitholder will equal 20.0% of the net proceeds from a liquidation of the company (other than in connection with a listing, as described below) in excess of adjusted capital, as measured immediately prior to liquidation. Adjusted capital shall mean: cumulative gross proceeds generated from sales of shares (including the DRP) reduced for distributions to members of proceeds from non-liquidation dispositions of our assets and amounts paid for share repurchases pursuant to the Share Repurchase Program. In the event of any liquidity event that involves a listing of the company’s shares, or a transaction in which the company’s members receive shares of a company that is listed, on a national securities exchange, the liquidation incentive distribution will equal 20% of the amount, if any, by which the company’s listing value following such liquidity event exceeds the adjusted capital, as calculated immediately prior to such listing (the “listing premium”). Any such listing premium and related liquidation incentive distribution will be determined and payable in arrears 30 days after the commencement of trading following such liquidity event. Operating Expense and Expense Assumption and Reimbursement Agreement The company will reimburse the advisor’s cost of providing administrative services, legal, accounting and printing. The company will not reimburse the advisor for the salaries and benefits to be paid to the named executive officers. For the year ended December 31, 2015, the advisor assumed operating expenses for the company in an amount sufficient to keep total annual operating expenses (exclusive of interest, taxes dividend expense, borrowing costs, organizational and extraordinary expenses) of the company (“Expenses”) at percentages of average net assets of such class for any calculation period no higher than 5.0% (the “Maximum Rates”). During the year ended December 31, 2016, Expenses as a percentage of net assets were less than the Maximum Rates allowing the advisor to be fully reimbursed for past assumed operating expenses. The expense reimbursement agreement expired and was not renewed as of December 31, 2016 as Expenses are expected to continue in an amount less than the Maximum Rates. The expense reimbursement agreement expired December 31, 2016. For the years ended December 31, 2016, the company recorded a charge of $636,926 in the statement of operations as reimbursement for assumption of past operating expenses. For the years ended December 31, 2018, 2017 and 2016, the advisor earned $5,803,893, $3,351,250 and $2,018,434, respectively, in management fees. The Consolidated Statements of Operations also reflect a $560,895 increase in incentive allocation for the year ended December 31, 2018 shown as a net decrease in net assets attributed to special unitholder. There was a capital gains incentive distribution fee of $139,692 earned in 2017 by the advisor and reflected as an incentive fee expense on the Consolidated Statements of Operations. The Consolidated Statements of Operation also reflect a $1,235,657 increase and $285,673 decrease in incentive allocation shown as a net decrease and net increase in net assets attributed to special unitholder for the years ended December 31, 2017 and December 31, 2016, respectively. As of December 31, 2018, due to advisor on the Consolidated Statements of Assets and Liabilities in the amount of $19,181 is solely comprised of a payable to the advisor for reimbursable Organization and Offering Costs. As of December 31, 2017, due to advisor on the consolidated statements of assets and liabilities in the amount of $10,417 is solely comprised of a payable to the advisor for reimbursable Organization and Offering Costs. For the years ended December 31, 2018, 2017 and 2016, the company paid $833,043, $827,709 and $1,332,908, respectively, in dealer manager fees and $2,438,486, $2,444,282 and $4,613,001, respectively, in selling commissions to the company’s dealer manager, SC Distributors. These fees and commissions were paid in connection with the sales of the company’s shares to investors and, as such, were recorded against the proceeds from the issuance of shares, prior the receipt by the company, and thus are not reflected in the company’s consolidated statements of operations. For the years ended December 31, 2018, 2017 and 2016, Greenbacker Administration, LLC invoiced the company $0, $115,849 and $203,381, respectively, for expenses, at cost, for services related to asset management, compliance and accounting services related to the company’s investments. For the year ended December 31, 2015 Greenbacker Administration, LLC did not invoice the company for expenses. Effective on April 1, 2017, these expenses were invoiced directly to the company’s investments. As of December 31, 2018 and 2017, respectively, the advisor owned 23,601 Class A shares. The affiliate of our advisor redeemed all of its shares during the year ended December 31, 2017 and no longer owns shares as of December 31, 2017. The company entered into secured loans to finance the purchase and installation of energy efficient lighting with LED Funding LLC and Renew AEC One LLC (“AEC Companies”). All of the loans with LED Funding LLC, an AEC Company, converted to an operating lease on the day the energy efficiency upgrades became operational. AEC Companies are considered related parties as the members of these entities own an indirect, non-controlling ownership interest in the company’s advisor. The loans outstanding between the AEC Companies and the company, and the subsequent operating leases, were negotiated at an arm’s length and contain standard terms and conditions that would be included in third party lending agreements including required security and collateral, interest rates based upon risk of the specific loan, and term of the loan. As of December 31, 2018, all loans and operating leases are considered current per their terms.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Borrowings	Note 6. Borrowings On January 5, 2018, the company, through GREC HoldCo, entered into a credit agreement by and among the Company, the Company’s wholly owned subsidiary, GREC, the lenders party thereto and Fifth Third Bank, as administrative agent, as sole lead arranger and sole lead bookrunner, as well as swap counterparty. The credit facility (the “Credit Facility”) consists of a loan of up to the lesser of $60,000,000 or a borrowing base amount based on various solar projects that act as collateral for the credit facility, of which approximately $25.7 million was drawn down at closing. The Credit Facility allows for additional drawdowns through December 31, 2018 and is scheduled to convert to a term loan with a maturity on January 5, 2024. As of December 31, 2018, the outstanding balance is approximately $30.7 million. Financing costs of $1,657,117 related to the Credit Facility, and the previous Facility 1 and Facility 2 Term Loans, have been capitalized and are being amortized over the current term of the Credit Facility. Interest on the Credit Facility, which bears interest at 2.125% in excess of one-month LIBOR, is payable on the last day of each month commencing January 31, 2018. Commitment fees on the average daily unused portion of the Credit Facility are payable at a rate per annum of 0.50% through December 31, 2018. While principal on the Credit Facility was scheduled to be payable commencing on January 31, 2019, at a fixed amount on the last day of each month based upon an amortization period equal to the weighted average power purchase agreement (“PPA”) term less one year, the principal payments have been deferred to the end of the Extension Agreement. Borrowings under the Credit Facility are secured by the assets, cash, agreements and equity interests in the Borrower and its subsidiaries. The company is a guarantor of the Borrower’s obligations under the Credit Facility. In regard to the Credit Facility, the company has entered into four separate interest rate swap agreements. The first swap (“Swap 1”), effective July 29, 2016, has an initial notional amount of $4,300,000 to swap the floating rate interest payments on the original Facility 1 Term Loan for a corresponding fixed payment. The fixed swap rate is 1.11%. The second swap (“Swap 2”), with a trade date of June 15, 2017 and an effective date of June 18, 2018 and an initial notional amount of $20,920,650, was used to swap the floating rate interest payments on an additional principal amount of the Credit Facility, for a corresponding fixed payment. The fixed swap rate is 2.261%. The third swap (“Swap 3”), with a trade date of January 11, 2018 and an effective date of December 31, 2018 and an initial notional amount of $29,624,945 was used to swap the floating rate interest payments on the remaining unhedged portion of the Credit Facility, as well as the estimated additional drawdowns, for a corresponding fixed payment. The fixed swap rate is 2.65%. The fourth swap (“Swap 4”), with a trade date of February 7, 2018 and an effective date of December 31, 2018 and an initial notional amount of $4,180,063 was used to swap the floating rate interest payments on the remaining unhedged portion of the Credit Facility, as well as the estimated additional drawdowns, for a corresponding fixed payment. The fixed swap rate is 2.97%. If an event of default shall occur and be continuing under the Credit Facility, the commitments under the Credit Facility may be terminated and the principal amount outstanding under the Credit Facility, together with all accrued unpaid interest and other amounts owing in respect thereof, may be declared immediately due and payable. On July 11, 2016, the company, through a wholly owned subsidiary, GREC HoldCo (the “Borrower”), entered into a Credit Agreement by and among the Borrower, the lenders party thereto and Fifth Third Bank, as administrative agent, as well as swap counterparty. The credit facility consisted of an initial term loan of $4,300,000 (the “Facility 1 Term Loan”) as well as a revolving credit facility in the aggregate principal amount of up to $33,250,000 (the “Revolver”). The amount outstanding on the Revolver, based upon the modified conversion date of September 9, 2017, was converted to an additional term loan facility in the amount of $10,000,000 (the “Facility 2 Term Loan”). The Facility 1 Term Loan and Facility 2 Term Loan in the amount of approximately $14,100,000 were repaid as part of the Credit Facility closing. The company’s outstanding debt as of December 31, 2018 and December 31, 2017 was as follows: December 31, 2018 December 31, 2017 Aggregate Principal Amount Available Principal Amount Outstanding Carrying Value Deferred Financing Costs Term Note Payable, Net of Financing Costs Aggregate Principal Amount Available Principal Amount Outstanding Carrying Value Deferred Financing Costs Term Note Payable, Net of Financing Costs Revolver $ 60,000,000 $ 30,665,460 $ 30,665,460 $ 1,138,414 $ 29,527,046 N/A N/A N/A N/A N/A Facility 1 Term Loan — — — — — — 3,893,889 3,893,889 745,430 3,148,459 Facility 2 Term Loan — — — — — — 9,761,905 9,761,905 — 9,761,905 Total $ 60,000,000 $ 30,665,460 $ 30,665,460 $ 1,138,414 $ 29,527,046 $ — $ 13,655,794 $ 13,655,794 $ 745,430 $ 12,910,364 The following table shows the components of interest expense, commitment fees related to the Revolving Facility, amortized deferred financing costs, weighted average stated interest rate and weighted average outstanding debt balance for the credit facility for the year ended December 31, 2018: For the year Ended December 31, 2018 Credit Facility commitment fee $ 42,615 Credit Facility Loan interest 1,219,237 Amortization of deferred financing costs 222,394 Other* 464,436 Total $ 1,948,682 Weighted average interest rate on credit facility 4.14 % Weighted average outstanding balance of credit facility $ 29,896,416 *Primarily includes financing costs of credit facility and swap interest hedged against the credit facility. The following table shows the components of interest expense, commitment fees related to the Revolving Facility, amortized deferred financing costs, weighted average stated interest rate and weighted average outstanding debt balance for the credit facility for the year ended December 31, 2017: For the year Ended December 31, 2017 Revolver interest $ 444,303 Revolver commitment fee 81,109 Credit Facility Loan interest 157,811 Amortization of deferred financing costs 164,725 Total 847,948 Weighted average interest rate on credit facility. 4.87 % Weighted average outstanding balance of credit facility $ 8,481,848 The following table shows the components of interest expense, commitment fees related to the Revolving Facility, amortized deferred financing costs, weighted average stated interest rate and weighted average outstanding debt balance for the credit facility for the period July 11, 2016 through December 31, 2016: For the Revolver interest $ 164,179 Revolver commitment fee 29,927 Facility 1 Term Loan interest 96,248 Amortization of deferred financing costs 95,339 Other* (90,697 ) Total 294,996 Weighted average interest rate on credit facility. 4.37 % Weighted average outstanding balance of credit facility $ 10,991,000 * Primarily includes financing costs of credit facility and swap interest hedged against the credit facility. The principal payments due on borrowings for each of the next five years ending December 31 and thereafter, are as follows: Year ending December 31: Principal Payments 2019 $ 2,519,220 2020 2,610,193 2021 2,570,228 2022 2,198,372 2023 2,209,630 Thereafter 18,557,817 Total $ 30,665,460

Members' Equity

Members' Equity	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Members' Equity	Note 7. Members’ Equity General Pursuant to the terms of the LLC Agreement, the LLC may issue up to 400,000,000 shares, of which 350,000,000 shares are designated as Class A, C, I, P-A and P-I shares (collectively, common shares), and 50,000,000 are designated as preferred shares and one special unit. Each class of common shares will have the same voting rights. The following are the current commissions and fees for each common share class in connection with the company’s continuous public offering pursuant to a Registration Statement on Form S-1 (File No. 333-211571) as well as the private offering of certain share classes. Class A: Each Class A share is subject to a selling commission of up to 7.00% per share and a dealer manager fee of up to 2.75% per share. No selling commissions or dealer manager fees are paid for sales pursuant to the dividend reinvestment plan. Class C: Each Class C share issued in the primary offering is subject to a selling commission of up to 3.00% per share and a dealer manager fee of up to 2.75% per share. In addition, with respect to Class C shares, the company pays the dealer manager a monthly distribution fee, or “distribution fee”, that accrues daily equal to 1/365 th Class I and Class P-I: No selling commission or distribution fee will be paid for sales of any Class I and Class P-I shares. Each Class I share is subject to a dealer manager fee of up to 1.75% per share. Class P-A: Class P-A shares were converted into Class P-I shares during the quarter ended June 30, 2017 and were not offered for sale for the period through April 15, 2018. Effective April 16, 2018, Class P-A shares were again offered with a selling commission of up to 6% and a dealer manager fee of up to 2.50%. The following table is a summary of the shares issued and repurchased during the period and outstanding as of December 31, 2018: Shares Outstanding as of December 31, 2017 Shares Issued During the Period Shares Repurchased During the Period Shares Outstanding as of December 31, 2018 Class A shares 13,857,830 3,279,887 (422,979 ) 16,714,738 Class C shares 1,431,999 798,080 (7,601 ) 2,222,478 Class I shares 4,511,832 1,757,365 (59,781 ) 6,209,416 Class P-A shares — 15,478 — 15,478 Class P-I Shares 3,387,568 8,469,305 (15,481 ) 11,841,392 Total 23,189,229 14,320,115 (505,842 ) 37,003,502 The following table is a summary of the shares issued and repurchased during the period and outstanding as of December 31, 2017: Shares Outstanding as of December 31, 2016 Shares Issued During the Period Shares Converted During the Period Shares Repurchased During the Period Shares Outstanding as of December 31, 2017 Class A shares 10,878,502 3,348,253 — (368,925 ) 13,857,830 Class C shares 1,041,836 396,204 — (6,041 ) 1,431,999 Class I shares 2,754,491 1,838,656 — (81,315 ) 4,511,832 Class P-A shares 47,774 3,092 (50,866 ) — — Class P-I Shares 199,319 3,147,692 50,866 (10,309 ) 3,387,568 Total 14,921,922 8,733,897 — (466,590 ) 23,189,229 The proceeds from shares sold and the value of shares issued through the reinvestment of distributions for each class of shares for the years ended December 31, 2018, 2017, 2016 were as follows: Class A Shares Class C Shares Class I Shares Class P-A Shares Class P-I Shares Total For the year ended December 31, 2018 Proceeds from Shares Sold $ 25,178,267 $ 6,378,209 $ 13,706,626 $ 135,375 $ 74,928,595 $ 120,327,072 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,815,909 $ 487,570 $ 1,823,310 $ — $ — $ 6,126,789 For the year ended December 31, 2017 Proceeds from Shares Sold $ 26,852,433 $ 3,102,082 $ 15,071,499 $ 27,075 $ 27,366,718 $ 72,419,807 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,127,873 $ 363,670 $ 1,255,991 $ — $ — $ 4,747,534 For the year ended December 31, 2016 Proceeds from Shares Sold $ 49,913,307 $ 6,957,212 $ 15,078,606 $ 419,175 $ 1,750,750 $ 74,119,050 Proceeds from Shares Issued through Reinvestment of Distributions $ 2,347,789 $ 257,384 $ 685,413 $ — $ — $ 3,290,586 As of December 31, 2018, 2017 and 2016, none of the LLC’s preferred shares were issued and outstanding. The LLC Agreement authorizes the board of directors, without approval of any of the members, to increase the number of shares the company is authorized to issue and to classify and reclassify any authorized but unissued class or series of shares into any other class or series of shares having such designations, preferences, right, power and duties as may be specified by the board of directors. The LLC Agreement also authorizes the board of directors, without approval of any of the members, to issue additional shares of any class or series for the consideration and on the terms and conditions established by the board of directors. In addition, the company may also issue additional limited liability company interests that have designations, preferences, right, powers and duties that are different from, and may be senior to, those applicable to the common shares. The Special Unitholder will hold the special unit in the company. Refer to Note 5 for the terms of the special unit. The proceeds related to the shareholder receivable amount of $469,245 presented on the consolidated statements of assets and liabilities as of December 31, 2018 were subsequently collected on January 2, 2019. Distribution Reinvestment Plan The company adopted a DRP through which the company’s Class A, C and I shareholders may elect to purchase additional shares with distributions from the company rather than receiving the cash distributions. The board of directors may reallocate the shares between the public offering and the DRP. Shares issued pursuant to the DRP will have the same voting rights as shares offered pursuant to the public offering. As of December 31, 2018 and 2017, $50,000,000 in shares were allocated for use in the DRP. During this offering, the purchase price of shares purchased through the DRP will be at a price equal to the then current net offering price per share. No dealer manager fees, selling commissions or other sales charges will be paid with respect to shares purchased pursuant to the DRP except for distribution fees on Class C shares issued under the DRP. At its discretion, the board of directors may amend, suspend, or terminate the DRP. A participant may terminate participation in the DRP by written notice to the plan administrator, received by the plan administrator at least 10 days prior to the distribution payment date. As of December 31, 2018 and 2017, 1,703,374 and 1,008,948 shares, respectively, were issued under the DRP. Share Repurchase Program During the quarter ended September 30, 2015, the company commenced a share repurchase program, or “share repurchase program”, pursuant to which quarterly share repurchases will be conducted, on up to approximately 5% of the weighted average number of outstanding shares in any 12-month period, to allow members who hold Class A, C, I, P-A (commencing as of April 16, 2018) or P-I shares (commencing as of October 1, 2017) to sell shares back to the company at a price equal to the then current offering price less the selling commissions and dealer manager fees associated with that class of shares. The company is not obligated to repurchase shares and the board of directors may terminate the share repurchase program at its sole discretion. The share repurchase program includes numerous restrictions that will limit a shareholder’s ability to sell shares. Unless the board of directors determines otherwise, the company limits the number of shares to be repurchased during any calendar year to the number of shares the company can repurchase with the proceeds received from the sale of shares under the DRP. At the sole discretion of the board of directors, the company may also use cash on hand, cash available from borrowings and cash from liquidation of investments to repurchase shares. In addition, the company plans to limit repurchases in each fiscal quarter to 1.25% of the weighted average number of shares outstanding in the prior four fiscal quarters. For the year ended December 31, 2018, the company repurchased 422,979 Class A shares, 7,601 Class C shares, 59,781 Class I shares and 15,481 Class P-I shares at a total purchase price of $3,743,387, $65,340, $528,898 and $136,845, respectively, pursuant to the company’s share repurchase program. For the year ended December 31, 2017, the company repurchased 368,925 Class A shares, 6,041 Class C shares, 81,315 Class I shares and 10,309 Class P-I shares at a total purchase price of $3,280,566, $53,073, $724,059 and $90,000, respectively, pursuant to the company’s share repurchase program. For the year ended December 31, 2016, the company repurchased 261,620 Class A shares and 25,035 Class I shares at a total purchase price of $2,407,717 and $230,084, respectively, including 98,786 shares from an affiliate of the advisor. We have received an order for our repurchase program from the SEC under Rule 102(a) of Regulation M under the Exchange Act. In addition, our repurchase program is substantially similar to repurchase programs for which the SEC has stated it will not recommend enforcement action under Rule 13e-4 and Regulation 14E under the Exchange Act.

Distributions

Distributions	12 Months Ended
	Dec. 31, 2018
Distributions Made to Members or Limited Partners [Abstract]
Distributions	Note 8. Distributions On the last business day of each month, with the authorization of the company’s board of directors, the company declares distributions on each outstanding Class A, C, I, P-A and P-I share. These distributions are calculated based on shareholders of record for each day in amounts equal to that exhibited in the table below based upon distribution period and class of share. Class of Share Distribution Period A C I P-A P-I 1-Nov-15 31-Jan-16 $ 0.0016478 $ 0.0016478 $ 0.0016478 — — 1-Feb-16 30-Apr-16 $ 0.0016551 $ 0.0016551 $ 0.0016551 — — 1-May-16 31-Jul-16 $ 0.0016617 $ 0.0016617 $ 0.0016617 $ 0.0015826 $ 0.0015826 1-Aug-16 31-Oct-16 $ 0.0016766 $ 0.0016766 $ 0.0016766 $ 0.0015968 $ 0.0015968 1-Nov-16 31-Jan-17 $ 0.0016856 $ 0.0016402 $ 0.0016856 $ 0.0016036 $ 0.0016036 1-Feb-17 31-Apr-17 $ 0.0016807 $ 0.0016350 $ 0.0016807 $ 0.0015952 $ 0.0015952 1-May-17 31-Jul-17 $ 0.0016710 $ 0.0016273 $ 0.0016710 $ 0.0015952 $ 0.0015828 1-Aug-17 31-Oct-17 $ 0.0016690 $ 0.0016265 $ 0.0016690 — $ 0.0015901 1-Nov-17 31-Jan-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 — $ 0.0015828 1-Feb-18 30-Apr-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 — $ 0.0015828 1-May-18 31-Jul-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 $ — $ 0.0015828 1-Aug-18 31-Oct-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 $ 0.0016479 $ 0.0015828 1-Nov-18 31-Dec-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 $ 0.0016479 $ 0.0015828 The following table reflects the distributions declared during the year ended December 31, 2018. Pay Date Paid in Cash Value of Shares Issued under DRP Total February 1, 2018 $ 728,738 $ 464,821 $ 1,193,559 March 1, 2018 682,039 428,310 1,110,349 April 2, 2018 790,925 474,370 1,265,295 May 1, 2018 792,185 475,874 1,268,059 June 1, 2018 883,662 507,728 1,391,390 July 2, 2018 927,638 502,333 1,429,971 August 1, 2018 1,013,883 529,333 1,543,216 September 4, 2018 1,078,310 541,479 1,619,789 October 1, 2018 1,097,313 529,751 1,627,064 November 1, 2018 1,178,736 555,383 1,734,119 December 3, 2018 1,177,142 546,446 1,723,588 January 2, 2019 1,260,777 570,961 1,831,738 Total $ 11,611,348 $ 6,126,789 $ 17,738,137 The following table reflects the distributions declared during the year ended December 31, 2017. Pay Date Paid in Cash Value of Shares Issued under DRP Total February 1, 2017 $ 431,686 $ 349,842 $ 781,528 March 1, 2017 413,270 332,761 746,031 April 3, 2017 482,113 371,902 854,015 May 1, 2017 486,864 370,463 857,327 June 1, 2017 524,909 383,585 908,494 July 3, 2017 534,165 382,339 916,504 August 1, 2017 572,833 406,993 979,826 September 1, 2017 600,962 415,864 1,016,826 October 2, 2017 603,869 411,848 1,015,717 November 1, 2017 637,604 436,753 1,074,357 December 1, 2017 656,495 430,860 1,087,355 January 2, 2018 711,306 454,324 1,165,630 Total $ 6,656,076 $ 4,747,534 $ 11,403,610 The following table reflects the distributions declared during the year ended December 31, 2016. Pay Date Paid in Cash Value of Shares Issued under DRP Total February 1, 2016 $ 171,410 $ 185,680 $ 357,090 March 1, 2016 182,825 195,193 378,018 April 1, 2016 221,088 221,729 442,817 May 2, 2016 234,799 241,934 476,733 June 1, 2016 261,003 271,362 532,365 July 1, 2016 270,112 277,033 547,145 August 1, 2016 296,391 288,859 585,250 September 1, 2016 323,445 299,790 623,235 October 3, 2016 334,152 299,699 633,851 November 1, 2016 356,589 321,863 678,452 December 1, 2016 371,493 320,165 691,658 January 3, 2017 403,983 367,279 771,262 Total $ 3,427,290 $ 3,290,586 $ 6,717,876 All distributions paid for the year ended December 31, 2018 are expected to be reported as a return of capital to equityholders for tax reporting purposes and all distributions paid for the years ended December 31, 2017 and 2016 were reported as a return of capital to equityholders for tax purposes. Cash distributions paid during the periods presented were funded from the following sources noted below: For the year ended December 31, 2018 For the year ended December 31, 2017 For the year ended December 31, 2016 Cash from operations $ 11,611,348 $ 6,656,075 $ 3,180,297 Offering proceeds — — — Total cash distributions $ 11,611,348 $ 6,656,075 $ 3,180,297 The company expects to continue to fund distributions from a combination of cash from operations as well as offering proceeds until a minimum of $250,000,000 in net assets is reached, the portfolio is leveraged by at least 33% as well as being fully invested in operating assets.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 9. Income Taxes The LLC conducts most of its operations through GREC, its taxable wholly-owned subsidiary. The consolidated income tax provision for the years ended December 31, 2018, 2017 and 2016 is comprised of the following: Current Deferred Total Year ended December 31, 2018: US federal $ — $ (1,218,349 ) $ (1,218,349 ) State and local — (254,810 ) (254,810 ) Foreign jurisdiction — — — Tax (benefit)/expense $ — $ (1,473,159 ) $ (1,473,159 ) Change in valuation allowance — (54,758 ) (54,758 ) Tax (benefit)/expense, net $ — $ (1,527,917 ) $ (1,527,917 ) Current Deferred Total Year ended December 31, 2017: US federal $ — $ 1,289,202 $ 1,289,202 State and local — 273,787 273,787 Foreign jurisdiction — — — Tax (benefit)/expense $ — $ 1,562,989 $ 1,562,989 Change in valuation allowance — 92,366 92,366 Tax (benefit)/expense, net $ — $ 1,655,355 $ 1,655,355 Current Deferred Total Year ended December 31, 2016: US federal $ — $ (2,916,807 ) $ (2,916,807 ) State and local — (360,921 ) (360,921 ) Foreign jurisdiction — — — Tax (benefit)/expense $ — $ (3,277,728 ) $ (3,277,728 ) Change in valuation allowance. — (2,251,666 ) (2,251,666 ) Tax (benefit)/expense, net $ — $ (5,529,394 ) $ (5,529,394 ) The following table represents the components of the income tax expense and the proportionate ratio of each components as follows: 2018 Percentage 2017 Percentage 2016 Percentage Net increase (decrease) in net assets from operations before tax, based on ASC 946, at the federal income tax rate $ 2,523,711 (165.17 )% $ 2,793,488 168.75 % $ 869,681 (15.73 )% Reversal of Greenbacker Renewable Energy, LLC’s (income)/loss treated as a partnership for U.S. tax purposes, at federal income tax rate $ 283,062 (18.53 )% $ 337,284 20.38 % $ 42,047 (0.76 )% Adjustment for Greenbacker Renewable Energy Corporation’s consolidated book income/(loss), based on standard GAAP accounting, at federal income tax rate $ (3,769,926 ) 246.74 % $ (2,225,352 ) (134.43 )% $ (2,066,516 ) 37.37 % Federal tax credit $ (255,196 ) 16.70 % $ — — % $ (1,762,020 ) 31.87 % State tax credit $ — — % $ — — % $ (229,419 ) 4.15 % Increase in income taxes resulting from: State and local taxes, net of federal benefit $ (270,036 ) 17.67 % $ 261,224 15.78 % $ (132,613 ) 2.40 % Change in state rate $ 15,226 (1.00 )% $ 12,562 0.76 % $ 1,112 (0.02 )% Change in federal rate $ — — % $ 383,783 23.18 % $ — — % Permanent differences, at federal income tax rate $ — — % $ — — % $ — — % Change in valuation allowances $ (54,758 ) 3.59 % $ 92,366 5.58 % $ (2,251,666 ) 40.72 % Actual provision for income taxes $ (1,527,917 ) 100.00 % $ 1,655,355 100.00 % $ (5,529,394 ) 100.00 % Deferred tax assets have been classified on the accompanying consolidated statements of assets and liabilities as of December 31, 2018 and 2017 as follows: 2018 2017 Amortization 60,181 63,480 Net operating losses 21,289,433 12,669,763 Federal tax credits 5,756,076 5,493,745 Unrealized gains (20,786,706 ) (13,381,165 ) Deferred tax assets $ 6,318,984 $ 4,845,823 Less: valuation allowance (267,027 ) (321,785 ) Deferred tax assets, net $ 6,051,957 $ 4,524,038 As of December 31, 2018, the company has federal and state income tax net operating loss (“NOL”) and investment tax credit (“ITC”) carryforwards of which will expire on various dates through 2038 as follows: Expires Year Ending December 31, Federal NOL Amount Federal ITC Amount State ITC Amount State NOL Amount 2020 $ — $ — $ 802,822 $ — 2021 $ — $ — $ 422,885 $ — 2022 $ — $ — $ — $ 918,368 2023 $ — $ — $ — $ 2,454,562 2024 $ — $ — $ — $ 2,549,437 2025 $ — $ — $ — $ 673,181 2026 $ — $ — $ — $ 2,934,175 2027 $ — $ — $ — $ 4,162,481 2028 $ — $ — $ — $ — 2029 $ — $ — $ — $ — 2030 $ — $ — $ — $ 2,751,775 2031 $ — $ — $ — $ 5,377,684 2032 $ — $ — $ — $ 6,870,978 2033 $ — $ — $ — $ — 2034 $ 161,963 $ — $ — $ 156,188 2035 $ 6,693,198 $ 3,345,092 $ — $ 2,718,197 2036 $ 15,734,069 $ 1,955,780 $ — $ 5,911,423 2037 $ 26,927,165 $ — $ — $ 14,329,300 2038 $ — $ 255,196 $ — $ — Indefinite $ 29,662,690 $ — $ — $ — As new tax legislation was enacted on December 22, 2017, commonly referred to as the Tax Cuts and Jobs Act (the “Act”), the company recognized the effect of any material changes in the Act in the determination of deferred tax assets and liabilities for the year ending December 31, 2017. The major aspects of the Act which affected the company included 1) the reduction of the corporate tax rate to 21%, effective December 22, 2017, which caused the company to remeasure its deferred tax assets and liabilities to reflect the effects of tax rate change; and 2) a deduction of interest expense up to only 30% of “adjusted taxable income” (as defined in the Act) ) and the ability of post 2017 net operating losses (“NOLs”) to only offset up to 80% of taxable income, with the understanding that any unused NOL can be carried forward indefinitely, which caused the company to modify certain assumptions in regard to utilization of NOL and investment tax credits in determining any potential valuation allowance. While cost recovery was modified to allow companies to expense 100% of investments in depreciable property, the company expects to continue to depreciate renewable energy assets over a five-year life using accelerated methodology. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax assets, projected future taxable income, and tax planning strategies in making this assessment. Based upon projections for future taxable income over the periods in which the deferred tax assets would be deductible, management as of December 31, 2018 has applied a partial valuation allowance of $267,027 against the deferred tax asset amounts the company will not be able to fully realize, as compared with $321,785 for the year ended December 31, 2017. The company follows the authoritative guidance on accounting for uncertainty in income taxes and concluded it has no material uncertain tax positions to be recognized as of December 31, 2018. The company assessed its tax positions and filings for all open tax years as of December 31, 2018 for all federal and state tax jurisdictions for the years 2014 through 2018. The results of this assessment are included in the company’s tax provision and deferred tax assets as of December 31, 2018.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 10. Commitments and Contingencies Legal proceedings: Pledge of collateral and unsecured guarantee of loans to subsidiaries: Unsecured guarantee of subsidiary renewable energy credit (“REC”) forward contracts See Note 1 — Organization and Operations of the Company and Note 5 — Related Party Agreements and Transactions Agreements for an additional discussion of the company’s commitments and contingencies.

Financial Highlights

Financial Highlights	12 Months Ended
	Dec. 31, 2018
Financial Highlights
Financial Highlights	Note 11. Financial Highlights The following is a schedule of financial highlights of the company attributed to Class A, C, I, P-A and P-I shares for the year ended December 31, 2018. For the year ended December 31, 2018 Class A Shares Class C Shares Class I Shares Class P-A Shares (5) Class P-I Shares Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.68 $ 8.42 $ 8.68 $ 8.75 $ 8.81 Net investment income (3) 0.28 0.28 0.28 0.07 0.28 Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder 0.12 0.12 0.12 (0.05 ) 0.12 Change in translation of assets and liabilities denominated in foreign currencies (4) — — — — — Change in benefit from deferred taxes on unrealized depreciation on investments 0.08 0.08 0.08 0.12 0.08 Net increase in net assets attributed to common equityholders 0.48 0.48 0.48 0.14 0.48 Shareholder distributions: Distributions from net investment income (0.33 ) (0.33 ) (0.33 ) (0.08 ) (0.30 ) Distributions from offering proceeds (0.28 ) (0.26 ) (0.28 ) (0.14 ) (0.28 ) Offering costs and deferred sales commissions (0.03 ) (0.08 ) (0.04 ) (0.14 ) — Other (2) 0.02 0.11 0.03 0.02 0.05 Net decrease in members’ equity attributed to common shares (0.62 ) (0.56 ) (0.62 ) (0.34 ) (0.53 ) Net asset value for common shares at end of period $ 8.54 $ 8.34 $ 8.54 $ 8.55 $ 8.76 Common shareholders’ equity at end of period $ 142,791,899 $ 18,546,310 $ 53,046,260 $ 132,272 $ 103,742,870 Common shares outstanding at end of period 16,714,738 2,222,478 6,209,416 15,478 11,841,392 Ratio/Supplemental data for common shares (annualized): Total return attributed to common shares based on net asset value 5.45 % 6.19 % 5.44 % 1.06 % 6.16 % Ratio of net investment income to average net assets 3.24 % 3.26 % 3.20 % 1.97 % 2.86 % Ratio of operating expenses to average net assets 3.87 % 3.95 % 3.86 % 3.48 % 3.69 % Portfolio turnover rate 0.05 % 0.05 % 0.05 % 0.05 % 0.05 % (1) The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2018, which were 15,338,291, 1,803,985, 5,386,556, 11,042, and 7,266,426, respectively. (2) Represents the impact of different share amounts used in calculating certain per share data based on weighted average shares outstanding during the period and the impact of shares at a price other than the net asset value. (3) Does not reflect any incentive fees that may be payable to the Special Unitholder. (4) Amount is less than $0.01 per share. (5) Class P-A shares were reinstated for sale as of April 16, 2018 and first sold on August 6, 2018. The following is a schedule of financial highlights of the company attributed to Class A, C, I and P-I shares for the year ended December 31, 2017. For the year ended December 31, 2017 Class A Shares Class C Shares Class I Shares Class P-I Shares Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.69 $ 8.44 $ 8.69 $ 8.67 Net investment income (3) 0.25 0.25 0.25 0.25 Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder 0.35 0.35 0.35 0.35 Change in translation of assets and liabilities denominated in foreign currencies (4) 0.01 0.01 0.01 0.01 Change in benefit from deferred taxes on unrealized depreciation on investments 0.05 0.05 0.05 0.05 Net increase in net assets attributed to common equityholders 0.66 0.66 0.66 0.66 Shareholder distributions: Distributions from net investment income (0.39 ) (0.39 ) (0.39 ) (0.39 ) Distributions from offering proceeds (0.22 ) (0.22 ) (0.21 ) (0.19 ) Offering costs and deferred sales commissions.. (0.04 ) (0.15 ) (0.08 ) — Other (2) (0.02 ) 0.08 0.01 0.06 Net decrease in members’ equity attributed to common shares (0.01 ) (0.02 ) (0.01 ) 0.14 Net asset value for common shares at end of period $ 8.68 $ 8.42 $ 8.68 $ 8.81 Common shareholders’ equity at end of period.. $ 120,344,517 $ 12,053,349 $ 39,181,769 $ 29,858,889 Common shares outstanding at end of period 13,857,830 1,431,999 4,511,832 3,387,568 Ratio/Supplemental data for common shares (annualized): Total return attributed to common shares based on net asset value 6.90 % 6.77 % 6.90 % 8.65 % Ratio of net investment income to average net assets 2.96 % 3.04 % 2.96 % 2.92 % Ratio of operating expenses to average net assets. 3.64 % 3.74 % 3.64 % 3.59 % Portfolio turnover rate 19.15 % 19.15 % 19.15 % 19.15 % Â (1) The per share data for Class A, C, I and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2017, which were 12,384,101, 1,194,718, 3,529,998 and 1,792,632, respectively. (2) Represents the impact of different share amounts used in calculating certain per share data based on weighted average shares outstanding during the period and the impact of shares at a price other than the net asset value. (3) Does not reflect any incentive fees that may be payable to the Special Unitholder. The following is a schedule of financial highlights of the company attributed to Class A, C, I, P-A and P-I shares for the year ended December 31, 2016. For the year ended December 31, 2016 Class A Shares Class C Shares Class I Shares Class P-A Shares Class P-I Shares Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.54 $ 8.54 $ 8.54 $ 8.54 $ 8.54 Net investment income (3) 0.43 0.43 0.43 0.19 0.19 Net unrealized appreciation (depreciation) on investments,net of incentive allocation to special unitholder (0.10 ) (0.10 ) (0.10 ) (0.05 ) (0.05 ) Change in translation of assets and liabilities denominated in foreign currencies — — — — — Change in benefit from deferred taxes on unrealized appreciation on investments 0.40 0.40 0.40 0.18 0.17 Net increase in net assets attributed to common equityholders 0.73 0.73 0.73 0.32 0.31 Shareholder distributions:Distributions from net investment income (0.33 ) (0.33 ) (0.33 ) (0.15 ) (0.14 ) Distributions from offering proceeds (0.27 ) (0.27 ) (0.27 ) (0.11 ) (0.11 ) Offering costs and deferred sales commissions — (0.22 ) — — — Other (2) 0.02 (0.01 ) 0.02 0.07 0.07 Net increase in members’ equity attributed to common shares 0.15 (0.10 ) 0.15 0.13 0.13 Net asset value for common shares at end of period $ 8.69 $ 8.44 $ 8.69 $ 8.67 $ 8.67 Common shareholders’ equity at end of period $ 94,541,760 $ 8,796,002 $ 23,938,449 $ 414,145 $ 1,727,858 Common shares outstanding at end of period 10,878,502 1,041,836 2,754,491 47,774 199,319 Ratio/Supplemental data for common shares: Total return, net of expense reimbursement to/from advisor, attributed to common shares based on net asset value 8.79 % 5.65 % 8.79 % 4.59 % 4.49 % Ratio of net investment income, net of expense reimbursement to/from advisor, to average net assets 4.95 % 4.98 % 4.93 % 4.81 % 4.48 % Ratio of operating expenses, net of expense reimbursement to/from advisor, to average net assets 4.65 % 4.68 % 4.63 % 4.53 % 4.21 % Total return, excluding expense reimbursement to/from advisor, attributed to common shares based on net asset value 9.34 % 6.13 % 9.31 % 5.03 % 4.78 % Ratio of net investment income, excluding expense reimbursement to/from advisor, to average net assets 5.61 % 5.65 % 5.58 % 5.45 % 5.08 % Ratio of operating expenses, excluding expense reimbursement to/from advisor, to average net assets 3.99 % 4.02 % 3.97 % 3.88 % 3.61 % Portfolio turnover rate 0.43 % 0.43 % 0.43 % 0.43 % 0.43 % Â (1) The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2016, which were 8,330,061, 690,825, 1,962,616, 30,286 and 82,013, respectively. (2) Represents the impact of different share amounts used in calculating certain per share data based on weighted average shares outstanding during the period and organizational costs, which are not included in operating expenses nor subject to the expense reimbursement agreement, and the impact of shares at a price other than the net asset value. (3) Does not reflect any incentive fees that may be payable to the Special Unitholder.

Selected Quarterly Data - Unaud

Selected Quarterly Data - Unaudited	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Data - Unaudited	Note 12. Selected Quarterly Data — Unaudited Presented in the following tables is a summary of the unaudited quarterly financial information for the years ended December 31, 2018, 2017, 2016, 2015 and 2014. The company believes that all necessary adjustments, consisting only of normal recurring adjustments, have been included in the amounts stated below to present fairly, and in accordance with GAAP, the selected quarterly information. For the quarter ended December 31, 2018 September 30, 2018 June 30, 2018 March 31, 2018 Total Investment income $ 4,540,427 $ 5,103,336 $ 4,984,874 $ 4,918,793 Net investment income $ (434,963 ) $ 1,988,378 $ 3,259,425 $ 3,271,370 Net gain (loss) on investments and foreign currency translation $ (1,693,642) $ (296,054) $ 2,341,771 $ 2,452,402 Change in (benefit) expense from deferred taxes on unrealized appreciation on investments $ 1,877,386 $ 2,275,076 $ 73,354 $ (1,239,228 ) Net increase (decrease) in net assets resulting from operations $ (251,219 ) $ 3,967,400 $ 5,674,550 $ 4,484,544 Net investment income (loss) per share - basic and diluted $ (0.01 ) $ 0.06 $ 0.12 $ 0.13 Net increase (decrease) in net assets resulting from operations per share - basic and diluted $ (0.01 ) $ 0.12 $ 0.21 $ 0.19 Net asset value per share at period end (Class A) $ 8.54 $ 8.69 $ 8.72 $ 8.70 Net asset value per share at period end (Class C) $ 8.34 $ 8.48 $ 8.50 $ 8.45 Net asset value per share at period end (Class I) $ 8.54 $ 8.69 $ 8.72 $ 8.70 Net asset value per share at period end (Class P-A) $ 8.55 $ 8.71 $ — $ — Net asset value per share at period end (Class P-I) $ 8.76 $ 8.89 $ 8.90 $ 8.84 For the quarter ended December 31, 2017 September 30, June 30, March 31, 2017 Total investment income $ 4,416,117 $ 3,663,635 $ 2,936,470 $ 2,366,899 Net investment income $ 229,297 $ 1,149,977 $ 1,986,899 $ 1,450,378 Net gain (loss) on investments and foreign currency translation $ 3,738,403 $ 1,579,619 $ 1,576,272 $ (108,245 ) Change in benefit (expense) from deferred taxes on unrealized appreciation on investments $ 1,198,186 $ 680,969 $ (653,366 ) $ (262,069 ) Net increase in net assets resulting from operations. $ 5,165,886 $ 3,410,565 $ 2,909,805 $ 1,080,064 Net investment income per share – basic and diluted. $ (0.01 ) $ 0.06 $ 0.11 $ 0.09 Net increase in net assets resulting from operations per share – basic and diluted. $ 0.22 $ 0.16 $ 0.15 $ 0.07 Net asset value per share at period end (Class A). $ 8.68 $ 8.64 $ 8.63 $ 8.64 Net asset value per share at period end (Class C). $ 8.42 $ 8.42 $ 8.41 $ 8.40 Net asset value per share at period end (Class I) $ 8.68 $ 8.64 $ 8.63 $ 8.64 Net asset value per share at period end (Class P-I). $ 8.81 $ 8.75 $ 8.73 $ 8.69 For the quarter ended December 31, September 30, 2016 June 30, 2016 March 31, 2016 Total investment income $ 2,848,655 $ 3,085,513 $ 1,645,291 $ 656,566 Net investment income $ 1,497,148 $ 1,730,438 $ 1,519,649 $ 23,132 Net gain (loss) on investments and foreign currency translation $ (1,706,876 ) $ 1,143,849 $ (231,426 ) $ (634,047 ) Change in benefit (expense) from deferred taxes on unrealized appreciation on investments $ 671,401 $ (8,372 ) $ 1,838,292 $ 1,885,335 Net increase in net assets resulting from operations $ 461,673 $ 2,865,915 $ 3,126,515 $ 1,274,420 Net investment income per share – basic and diluted $ 0.11 $ 0.14 $ 0.15 $ 0.00 Net increase in net assets resulting from operations per share – basic and diluted. $ 0.03 $ 0.24 $ 0.30 $ 0.16 Net asset value per share at period end (Class A) $ 8.69 $ 8.74 $ 8.69 $ 8.56 Net asset value per share at period end (Class C) $ 8.44 $ 8.49 $ 8.43 $ 8.56 Net asset value per share at period end (Class I) $ 8.69 $ 8.74 $ 8.69 $ 8.56 Net asset value per share at period end (Class P-A) $ 8.67 $ 8.74 $ — $ — Net asset value per share at period end (Class P-I) $ 8.67 $ 8.74 $ — $ — For the quarter ended December 31, September 30, June 30, March 31, 2015 Total investment income $ 421,488 $ 740,773 $ 633,646 $ 58,215 Net investment income (loss) $ 253,576 $ 270,523 $ 333,917 $ (118,483 ) Net gain (loss) on investments and foreign currency translation $ 666,498 $ 376,473 $ (46,396 ) $ 385,490 Change in benefit from deferred taxes on unrealized appreciation on investments $ 127,015 $ — $ — $ — Net increase in net assets resulting from operations $ 1,047,089 $ 646,996 $ 287,521 $ 267,007 Net investment income (loss) per share – basic and diluted $ 0.09 $ 0.07 $ 0.14 $ (0.08 ) Net increase in net assets resulting from operations per share – basic and diluted $ 0.20 $ 0.17 $ 0.12 $ 0.18 Net asset value per share at period end $ 8.54 $ 8.52 $ 8.50 $ 8.50 For the quarter ended December 31, September 30, 2014 (1) June 30, (1)(2) Total investment income $ 37,907 $ 304 $ 80 Net investment loss $ (106,838 ) $ (35,547 ) $ (53,464 ) Net gain (loss) on investments and foreign currency translation $ (32,636 ) $ 81,865 $ — Net increase (decrease) in net assets resulting from operations $ (139,474 ) $ 46,318 $ (53,464 ) Net investment loss per share – basic and diluted. $ (0.13 ) $ (0.10 ) $ (0.19 ) Net increase (decrease) in net assets resulting from operations per share – basic and diluted $ (0.16 ) $ 0.09 $ (0.19 ) Net asset value per share at period end $ 8.50 $ 8.50 $ 8.50 (1) As the company had no substantive operations prior to April 25, 2014, the first quarter of 2014 has been omitted. (2) The selected financial information for the June 30, 2014 quarter consists of the company’s commencement of operations (April 25, 2014 through June 30, 2014).

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 13. Subsequent Events The company’s management has evaluated subsequent events through the date of issuance of the consolidated financial statements. There have been no subsequent events that occurred during such period that would require disclosure in the consolidated financial statements or would be required to be recognized in the consolidated financial statements as of the year ended December 31, 2018.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The company’s consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), which requires the use of estimates, assumptions and the exercise of subjective judgment as to future uncertainties. Actual results could differ from those estimates, assumptions, and judgments. Significant items subject to such estimates will include determining the fair value of investments, revenue recognition, income tax uncertainties, and other contingencies. The consolidated financial statements of the company include the accounts of the LLC and its consolidated subsidiaries, GREC, and GREC Holdco. All intercompany accounts and transactions have been eliminated. The company’s consolidated financial statements are prepared using the specialized accounting principles of Accounting Standards Codification Topic 946, Financial Services—Investment Companies (“ASC Topic 946”). In accordance with this specialized accounting guidance, the company recognizes and carries all of its investments at fair value with changes in fair value recognized in earnings. Additionally, the company will not apply the consolidation or equity method of accounting to its investments. The company carries its liabilities at amounts payable, net of unamortized premiums or discounts. The company does not currently plan to elect to carry its non-investment liabilities at fair value. Net assets are calculated as the carrying amounts of assets, including the fair value of investments, less the carrying amounts of its liabilities. The financial information associated with the December 31, 2018 consolidated financial statements has been prepared by management and, in the opinion of management, contains all adjustments and eliminations, consisting of only normal recurring adjustments, necessary for a fair presentation in accordance with GAAP.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash consists of demand deposits at a financial institution. Such deposits may be in excess of the Federal Deposit Insurance Corporation insurance limits. The company has not experienced any losses in any such accounts. The company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Short-term investments that are cash equivalents, which are considered level 1 investments, are stated at cost, which approximates fair value. There are no restrictions on the use of the company’s cash as of December 31, 2018 and December 31, 2017.
Foreign Currency Translation	Foreign Currency Translation The accounting records of the company are maintained in U.S. Dollars. The fair value of investments and other assets and liabilities denominated in non-U.S. currencies are translated into U.S. Dollars using the exchange rate at the end of each reporting period. Amounts related to the purchases and sales of investments, investment income and expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. Net unrealized currency gains and losses arising from valuing foreign currency denominated assets and liabilities at the current exchange rate are reflected as part of net change in unrealized appreciation (depreciation) on translation of assets and liabilities denominated in foreign currencies in the consolidated statements of operations. Foreign security and currency translations may involve certain considerations and risks not typically associated with investing in U.S. companies and U.S. government securities. These risks include, but are not limited to, currency fluctuations and revaluations and future adverse political, social and economic developments, which could cause investments in foreign markets to be less liquid and prices more volatile than those of comparable U.S. companies or U.S. government securities.
Valuation of Investments at Fair Value	Valuation of Investments at Fair Value Accounting Standards Codification Topic 820, Fair Value Measurements and Disclosures (“ASC Topic 820”) defines fair value, establishes a framework for measuring fair value in accordance with GAAP and expands disclosures about fair value. The company recognizes and accounts for its investments at fair value. The fair value of the investments does not reflect transaction costs that may be incurred upon disposition of the investments. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value is an exchange price notion under which fair value is the price in an orderly transaction between market participants to sell an asset or transfer a liability in the market in which the reporting entity would transact for the asset or liability. The advisor has established procedures to estimate the fair value of its investments which the company’s board of directors has reviewed and approved. The company will use observable market data to estimate the fair value of investments to the extent that market data is available. In the absence of quoted market prices in active markets, or quoted market prices for similar assets in markets that are not active, the company will use the valuation methodologies described below with unobservable data based on the best available information in the circumstances, which incorporates the company’s assumptions about the factors that a market participant would use to value the asset. For investments for which quoted market prices are not available, which will comprise most of our investment portfolio, fair value will be estimated by using the income or market approach. The income approach is based on the assumption that value is created by the expectation of future benefits discounted to a current value and the fair value estimate is the amount an investor would be willing to pay to receive those future benefits. The market approach compares recent comparable transactions to the investment. Adjustments are made for any dissimilarity between the comparable transactions and the investments. These valuation methodologies involve a significant degree of judgment on the part of our advisor. In determining the appropriate fair value of an investment using these approaches, the most significant information and assumptions may include, as applicable: available current market data, including relevant and applicable comparable market transactions, applicable market yields and multiples, security covenants, call protection provisions, information rights, the nature and realizable value of any collateral, the investment’s ability to make payments, its earnings and discounted cash flows, the markets in which the project does business, comparisons of financial ratios of peer companies that are public, comparable merger and acquisition, the principal market and enterprise values, environmental factors, among other factors. The estimated fair values will not necessarily represent the amounts that may be ultimately realized due to the occurrence or nonoccurrence of future circumstances that cannot be reasonably determined. Because of the inherent uncertainty of the valuation of the investments, the estimate of fair values may differ significantly from the value that would have been used had a broader market for the investments existed. The authoritative accounting guidance prioritizes the use of market-based inputs over entity-specific inputs and establishes a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation. The three levels of valuation hierarchy are defined as follows: Level 1: Unadjusted quoted prices for identical assets or liabilities in active markets. Level 2: Other significant observable inputs that are sourced either directly or indirectly from publications or pricing services, including dealer or broker markets, for identical or comparable assets or liabilities. Generally, these inputs should be widely accepted and public, non-proprietary and sourced from an independent third party. Level 3: Inputs derived from a significant amount of unobservable market data and derived primarily through the use of internal valuation methodologies. In all cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls will be determined based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of an input to the fair value measurement in its entirety requires judgment and considers factors specific to each investment.
Calculation of Net Asset Value	Calculation of Net Asset Value Net asset value by share class is calculated by subtracting total liabilities for each class from the total carrying amount of all assets for that class, which includes the fair value of investments. Net asset value per share is calculated by dividing net asset value for each class by the total number of outstanding common shares for that class on the reporting date.
Earnings (Loss) per Share	Earnings (Loss) per Share In accordance with the provisions of ASC Topic 260 — Earnings per Share (“ASC Topic 260”), basic earnings per share is computed by dividing earnings available to common equityholders by the weighted average number of shares outstanding during the period. Other potentially dilutive common shares, and the related impact to earnings, are considered when calculating earnings per share on a diluted basis. The following information sets forth the computation of the weighted average basic and diluted net increase in net assets attributed to common equityholders per share for the years ended December 31, 2018, 2017 and 2016. For the year ended December 31, 2018 For the year ended December 31, 2017 For the year ended December 31, 2016 Basic and diluted Net increase in net assets resulting from operations attributed to common equityholders $ 13,314,380 $ 11,330,663 $ 8,014,196 Weighted average common shares outstanding 29,799,735 18,922,343 11,043,156 Net increase in net assets resulting from operations attributed to common equityholders per share $ 0.45 $ 0.60 $ 0.73
Revenue Recognition	Revenue Recognition Interest income is recorded on an accrual basis to the extent the company expects to collect such amounts. Interest receivable on loans and debt securities is not accrued for accounting purposes if there is reason to doubt an ability to collect such interest. Original issue discounts, market discounts or market premiums are accreted or amortized using the effective interest method as interest income. Prepayment premiums on loans and debt securities are recorded as interest income when received. Any application, origination or other fees earned by the company in arranging or issuing debt are amortized over the expected term of the loan. Loans are placed on non-accrual status when principal and interest are past due 90 days or more or when there is a reasonable doubt that principal or interest will be collected. Accrued interest is generally reversed when a loan is placed on non-accrual. Interest payments received on non-accrual loans may be recognized as income or applied to principal depending upon management’s judgment. Non-accrual loans are generally restored to accrual status when past due and principal and interest is paid and, in management’s judgment, is likely to remain current. Dividend income is recorded (1) on the ex-dividend date for publicly issued securities and (2) when received from private investments. The timing and amount of dividend income is determined on at least a quarterly basis by GREC. This process includes an analysis at the individual SPV level based on cash available from operations and working capital ratios needed for the SPVs daily operations. Dividend income from our privately held, equity investments are recognized when approved. Dividends received from the company’s private investments, which generally reflect net cash flow from operations, are declared, accrued and paid on a quarterly basis at a minimum.
Net Realized Gains or Losses and Net Change in Unrealized Appreciation or Depreciation on Investments	Net Realized Gains or Losses and Net Change in Unrealized Appreciation or Depreciation on Investments Realized gains or losses will be measured as the difference between the net proceeds from the sale, repayment, or disposal of an asset and the adjusted cost basis of the asset, without regard to unrealized appreciation or depreciation previously recognized. Net change in unrealized appreciation or depreciation will reflect the change in investment values during the reporting period, including any reversal of previously recorded unrealized appreciation or depreciation, when gains or losses are realized.
Payment-in-Kind Interest	Payment-in-Kind Interest For loans and debt securities with contractual payment-in-kind interest, any interest will be added to the principal balance of such investments and be recorded as income, if the valuation indicates that such interest is collectible.
Distribution Policy	Distribution Policy Distributions to members, if any, will be authorized and declared by our board of directors quarterly in advance and paid monthly. From time to time, we may also pay interim special distributions in the form of cash or shares, with the approval of our board of directors. Distributions will be made on all classes of shares at the same time. The cash distributions with respect to the Class C shares will be lower than the cash distributions with respect to the company’s other publicly offered share classes because of the distribution fee associated with the Class C shares, which is allocated specifically to Class C net assets. Amounts distributed to each class are allocated amongst the holders of the shares in such class in proportion to their shares. Distributions declared by our board of directors are recognized as distribution liabilities on the ex-dividend date.
Organization and Offering Costs	Organization and Offering Costs Organization and offering costs (“O&O costs”), other than sales commissions and the dealer manager fee, are initially being paid by our advisor and/or dealer manager on behalf of the company. These O&O costs include all costs previously paid or to be paid by the company in connection with its formation and the offering of its shares pursuant to now terminated Registration Statement on Form S-1 (File No. 333-178786-01), the current Registration Statement on Form S-1 (File No. 333-211571) and a private placement memorandum, including legal, accounting, printing, mailing and filing fees, charges of the company’s escrow holder, transfer agent fees, due diligence expense reimbursements to participating broker-dealers included in detailed and itemized invoices and costs in connection with administrative oversight of the offering and marketing process, and preparing supplemental sales materials, holding educational conferences, and attending retail seminars conducted by broker-dealers. While the total O&O costs for each public offering shall be reasonable and shall in no event exceed an amount equal to 15% of the gross proceeds of such offering and the DRP, the company is targeting no more than 4.0% of the gross proceeds for O&O costs other than sales commissions and dealer manager fees in the current Registration Statement. The company is obligated to reimburse our advisor for O&O costs that it incurs on behalf of the company, in accordance with the advisory agreement, but only to the extent that the reimbursement would not cause the selling commissions, the dealer manager fee and the other organization and offering expenses borne by the company to exceed 15% of gross offering proceeds as of the date of reimbursement. Total O&O costs related to the terminated Registration Statement amounted to approximately $7,556,000 or 4.8% of gross offering proceeds raised pursuant to such Registration Statement. The costs incurred by our advisor and/or dealer manager are recognized as a liability of the company to the extent that the company is obligated to reimburse our advisor and/or dealer manager, subject to the 15% of gross offering proceeds limitation described above. When recognized by the company, organizational costs are expensed and offering costs, excluding selling commissions and dealer manager fees, are recognized as a reduction of the proceeds from the offering. The following table provides information in regard to the status of O&O costs (in 000’s) as of December 31, 2018 and 2017: December 31, December 31, Total O&O Costs Incurred by the Advisor and Dealer Manager $ 9,371 $ 8,671 Amounts previously reimbursed to the Advisor/Dealer Manager by the company 9,106 8,381 Amounts payable to Advisor/Dealer Manager by the company 19 10 Amounts of the contingent liability subject to payment by the company only upon adequate gross offering proceeds being raised 246 280
Financing Costs	Financing Costs Financing costs related to debt liabilities incurred by the company, GREC or any wholly-owned holding company formed specifically to be a credit agreement counterparty are presented on the consolidated statements of assets and liabilities as a direct deduction from the carrying amount of that debt liability. Financing costs are deferred and amortized using the straight-line method over the life of the debt liability.
Capital Gains Incentive Allocation and Distribution	Capital Gains Incentive Allocation and Distribution Pursuant to the terms of the LLC’s amended and restated limited liability company agreement, a capital gains incentive fee will be earned by an affiliate of our advisor on realized gains (net of realized and unrealized losses) since inception from the sale of investments from the company’s portfolio during operations prior to a liquidation of the company. While the terms of the advisory agreement neither include nor contemplate the inclusion of unrealized gains in the calculation of the capital gains incentive fee, the company will include unrealized gains in the calculation of the capital gains incentive distribution pursuant to an interpretation of an American Institute for Certified Public Accountants Technical Practice Aid for investment companies. This amount reflects the incentive distribution that would be payable if the company’s entire portfolio was liquidated at its fair value as of the consolidated statements of assets and liabilities date even though the advisor is not entitled to an incentive distribution with respect to unrealized gains unless and until such gains are realized. Thus, on each date that net asset value is calculated, the company calculates for the capital gains incentive distribution by calculating such distribution as if it were due and payable as of the end of such period and reflected as an allocation of equity between common equityholders and the Special Unitholder. As of December 31, 2018 and 2017, a capital gains incentive distribution allocation in the amounts of $1,797,138 and $1,236,243, respectively, was recorded in the consolidated statements of assets and liabilities as Special unitholder’s equity.
Deferred Sales Commissions	Deferred Sales Commissions The company defers certain costs, principally sales commissions and related compensation, which are paid to the dealer manager and may be reallowed to financial advisors and broker/dealers in the future in connection with the sale of Class C shares sold with a reduced front-end load sales charge. The costs expected to be incurred at the time of the sale of Class C shares are recorded as a liability on the date of sale and are amortized on a straight-line basis over the period beginning at the time of sale and ending on the date which approximates an expected liquidity event for the company. As of December 31, 2018 and December 31, 2017, the company recorded a liability for deferred sales commissions in the amount of $191,706 and $249,858, respectively.
Reclassifications	Reclassifications Certain prior year amounts have been reclassified to conform with current year presentation.
Derivative Instruments	Derivative Instruments The company may utilize interest rate swaps to modify interest rate characteristics of existing debt obligations to manage interest rate exposure. These are recorded at fair value either as assets or liabilities in the accompanying consolidated statements of assets and liabilities with changes in the fair value of interest rate swaps during the period recognized as either an unrealized appreciation or depreciation in the accompanying consolidated statements of operations. The fair value of interest rate swap contracts open as of December 31, 2018 is included on the schedule of investments by contract. For the year ended December 31, 2018, the company’s average monthly notional exposure to interest rate swap contracts was $58,080,777. Consolidated Statements of Assets and Liabilities — Values of Derivatives at December 31, 2018 Asset Derivatives Liability Derivatives Risk Exposure Consolidated Statement of Assets and Liabilities Location Fair Value Consolidated Statement of Assets and Liabilities Location Fair Value Swaps Interest Rate Risk Swap contracts, at fair value $ 435,603 Swap contracts, at fair value $ 311,641 $ 435,603 $ 311,641 The effect of derivative instruments on the Consolidated Statements of Operations Risk Exposure Change in net unrealized depreciation on derivative transactions for the year ended December 31, 2018 Swaps Interest Rate Risk $ 32,106 $ 32,106 By using derivative instruments, the company is exposed to the counterparty’s credit risk — the risk that derivative counterparties may not perform in accordance with the contractual provisions offset by the value of any collateral received. The company’s exposure to credit risk associated with counterparty non-performance is limited to collateral posted and the unrealized gains inherent in such transactions that are recognized in the consolidated statement of assets and liabilities. The company minimizes counterparty credit risk through credit monitoring procedures and managing margin and collateral requirements, as appropriate. In regard to our investment in the Canadian Northern Lights Portfolio, we have foreign currency risk related to our revenue and operating expenses which are denominated in the Canadian Dollars as opposed to the U.S. Dollars. While we are currently of the opinion that the currency fluctuation between the Canadian and U.S. Dollar will not have a material impact on our operating results, we may in the future hedge this risk through the use of currency swap transactions or other financial instruments if the impact on our results of operations becomes material.
Income Taxes	Income Taxes The LLC intends to operate so that it will qualify to be treated as a partnership for U.S. federal income tax purposes under the Internal Revenue Code. As such, it will not be subject to any U.S. federal and state income taxes. In any year, it is possible that the LLC will not meet the qualifying income exception and will not qualify to be treated as a partnership. If the LLC does not meet the qualifying income exception, the members would then be treated as stockholders in a corporation and the company would become taxable as a corporation for U.S. federal income tax purposes under the Internal Revenue Code. The LLC would be required to pay income tax at corporate rates on its net taxable income. Distributions to members from the LLC would constitute dividend income taxable to such members, to the extent of the company’s earnings and profits and the payment of the distributions would not be deductible by the LLC. The LLC plans to conduct substantially all its operations through its wholly-owned subsidiary, GREC, which is a corporation that is subject to U.S. federal, state and local income taxes. Accordingly, most of its operations will be subject to U.S. federal, state and local income taxes. Income taxes are accounted for under the assets and liabilities method. Deferred tax assets and liabilities are recorded for the estimated future tax consequences attributable to differences between items that are recognized in the consolidated financial statements and tax returns in different years. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. For income tax benefits to be recognized including uncertain tax benefits, a tax position must be more-likely-than-not to be sustained upon examination by taxing authorities. The amount recognized is measured as the largest amount of the benefit that is more likely than not to be realized upon ultimate settlement. A valuation allowance is established against net deferred tax assets if, based on the weight of available evidence, it is more likely than not that some or all of the net deferred tax assets will not be realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. Interest and penalties associated with income taxes, if any, will be recognized in general and administrative expense. The company does not consolidate its investments for financial statements, rather it accounts for its investments at fair value under the specialized accounting of ASC Topic 946. The tax attributes of the individual investments will be considered and incorporated in the company’s fair value estimates for those investments. The amounts recognized in the consolidated financial statements for unrealized appreciation and depreciation will result in a difference between the consolidated financial statements and the cost basis of the assets for tax purposes. These differences will be recognized as deferred tax assets and liabilities. Generally, the entities that hold the company’s investments will be included in the consolidated tax return of GREC and the differences between the amounts recognized for financial statement purposes and the tax return will be recognized as additional deferred tax assets and liabilities. The company follows the authoritative guidance on accounting for uncertainty in income taxes and concluded it has no material uncertain tax positions to be recognized at this time. The company assessed its tax positions for all open tax years as of December 31, 2018 for all U.S. federal and state tax jurisdictions for the years 2014 through 2018. The results of this assessment are included in the company’s tax provision and deferred tax assets as of December 31, 2018.
Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In December 2016, the FASB issued ASU 2016-20, Technical Corrections and Improvements to Topic 606-Revenue from Contracts with Customers (ASU 2014-09). The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for the goods or services. The ASU will replace most of the existing revenue recognition guidance under US GAAP. The amendments in ASU 2014-09 are effective for public companies for interim and annual periods in fiscal years beginning after December 15, 2017, with early adoption permitted for interim and annual periods in fiscal years beginning after December 15, 2016. The Company adopted the standard on January 1, 2018 utilizing the cumulative effective transition method. The adoption of the standard did not have an impact on the Company’s consolidated financial statements and disclosures. See Revenue Recognition section for additional information on the Company’s revenue recognition accounting policies. Recently Issued Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”). ASU 2016-02 outlines a new model for accounting by lessees, whereby their rights and obligations under substantially all leases, existing and new, would be capitalized and recorded on the balance sheet. For lessors, however, the accounting remains largely unchanged from the current model, with the distinction between operating and financing leases retained, but updated to align with certain changes to the lessee model and the new revenue recognition standard. The new standard also replaces existing sale-leaseback guidance with a new model applicable to both lessees and lessors. Additionally, the new standard requires extensive quantitative and qualitative disclosures. ASU 2016-02, as amended by ASU 2017-13, is effective for U.S. GAAP public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years; for all other entities, the final lease standard will be effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early application will be permitted for all entities. The new standard must be adopted using a modified retrospective transition of the new guidance and provides for certain practical expedients. Transition will require application of the new model at the beginning of the earliest comparative period presented. The adoption of the standard will not have a material impact on the Company’s consolidated financial statements and disclosures. In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement”, which modifies the disclosure requirements on fair value measurements. The new guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 (fiscal 2020 for the Company). Upon the effective date, certain provisions are to be applied prospectively, while others are to be applied retrospectively to all periods presented. An entity is permitted to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. We are currently evaluating the impact of the amendments on our consolidated financial statement disclosures. Since the amendments impact only disclosure requirements, we do not expect the amendments to have an impact on our consolidated financial statements. In August 2018, the SEC issued a final rule to amend certain disclosure requirements that were redundant, duplicative, overlapping or superseded by other SEC disclosure requirements, US GAAP or IFRS. The amendments generally eliminated or otherwise reduced certain disclosure requirements of various SEC rules and regulations. However, in some cases, the amendments require additional information to be disclosed, including changes in stockholders’ equity in interim periods. The adoption of the requirement will not have a material impact on the Company’s consolidated financial statements and disclosures. The Company will be adopting the requirements during the first quarter of 2019.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Schedule of earnings (loss) per share	The following information sets forth the computation of the weighted average basic and diluted net increase in net assets attributed to common equityholders per share for the years ended December 31, 2018, 2017 and 2016. For the year ended December 31, 2018 For the year ended December 31, 2017 For the year ended December 31, 2016 Basic and diluted Net increase in net assets resulting from operations attributed to common equityholders $ 13,314,380 $ 11,330,663 $ 8,014,196 Weighted average common shares outstanding 29,799,735 18,922,343 11,043,156 Net increase in net assets resulting from operations attributed to common equityholders per share $ 0.45 $ 0.60 $ 0.73
Schedule of status of O&O costs	The following table provides information in regard to the status of O&O costs (in 000’s) as of December 31, 2018 and 2017: December 31, December 31, Total O&O Costs Incurred by the Advisor and Dealer Manager $ 9,371 $ 8,671 Amounts previously reimbursed to the Advisor/Dealer Manager by the company 9,106 8,381 Amounts payable to Advisor/Dealer Manager by the company 19 10 Amounts of the contingent liability subject to payment by the company only upon adequate gross offering proceeds being raised 246 280
Schedule of consolidated statements of assets and liabilities - values of derivatives	Consolidated Statements of Assets and Liabilities — Values of Derivatives at December 31, 2018 Asset Derivatives Liability Derivatives Risk Exposure Consolidated Statement of Assets and Liabilities Location Fair Value Consolidated Statement of Assets and Liabilities Location Fair Value Swaps Interest Rate Risk Swap contracts, at fair value $ 435,603 Swap contracts, at fair value $ 311,641 $ 435,603 $ 311,641
Schedule of effect of derivative instruments on the consolidated statements of operations	The effect of derivative instruments on the Consolidated Statements of Operations Risk Exposure Change in net unrealized depreciation on derivative transactions for the year ended December 31, 2018 Swaps Interest Rate Risk $ 32,106 $ 32,106

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of composition of company's investments	The composition of the company’s investments as of December 31, 2018, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio Commercial Solar: East to West Solar Portfolio $ 37,079,887 $ 33,665,088 10.9 % Foresight Solar Portfolio 13,650,000 14,357,201 4.7 Golden Horizons Solar Portfolio 9,400,000 14,445,071 4.7 Green Maple Portfolio 17,582,823 16,066,837 5.2 Magnolia Sun Portfolio 10,775,000 8,258,786 2.7 Midway III Solar Portfolio 11,552,904 13,265,608 4.3 Raleigh Portfolio 20,822,198 21,358,997 7.0 Six States Solar Portfolio 12,470,306 13,440,025 4.4 Sun Farm Portfolio 10,514,960 11,606,877 3.8 Sunny Mountain Portfolio 884,578 1,107,041 0.4 Subtotal $ 144,732,656 $ 147,571,531 48.1 % Residential Solar: Canadian Mountain Portfolio $ 1,603,136 $ 2,081,554 0.6 % Enfinity Colorado DHA Portfolio 1,400,000 1,700,728 0.6 Greenbacker Residential Solar Portfolio 28,100,000 27,372,253 8.9 Greenbacker Residential Solar Portfolio II 6,400,000 10,763,559 3.5 Subtotal $ 37,503,136 $ 41,918,094 13.6 % Wind: Greenbacker Wind Portfolio - California $ 9,500,000 $ 8,070,745 2.6 % Greenbacker Wind Portfolio - Idaho 7,320,000 6,385,631 2.1 Greenbacker Wind Portfolio - Montana 21,709,487 21,956,868 7.1 Greenbacker Wind Portfolio - Vermont 24,917,193 28,752,500 9.4 Subtotal $ 63,446,680 $ 65,165,744 21.2 % Pre-Operational Assets: Colorado CSG Solar Portfolio $ 27,333,205 $ 27,215,170 8.9 % Phoenix Solar Portfolio 9,964,515 9,964,515 3.2 SE Solar Portfolio 7,178,207 7,178,207 2.3 Turquoise Solar Portfolio 5,877,188 5,877,188 1.9 Subtotal $ 50,353,115 $ 50,235,080 16.3 % Other Investments: $ 1,279,273 $ 1,263,620 0.4 % Energy Efficiency: GREC Energy Efficiency Portfolio $ 447,885 $ 470,406 0.2 % Renew AEC One, LLC 551,640 551,640 0.2 Subtotal $ 999,525 $ 1,022,046 0.4 % Total $ 298,314,385 $ 307,176,115 100.0 % The composition of the company’s investments as of December 31, 2017, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio Commercial Solar: East to West Solar Portfolio $ 27,934,875 $ 27,200,000 12.4 % Foresight Solar Portfolio 13,200,071 13,200,071 6.0 Golden Horizons Solar Portfolio 9,450,000 9,482,075 4.3 Green Maple Portfolio 13,075,000 11,956,821 5.5 Magnolia Sun Portfolio 10,775,000 9,635,508 4.4 Midway III Solar Portfolio 10,093,861 10,093,861 4.6 Raleigh Portfolio 20,672,198 22,850,465 10.4 Six States Solar Portfolio 4,770,306 4,756,893 2.3 Sunny Mountain Portfolio 884,578 1,205,439 0.6 Subtotal $ 110,855,889 $ 110,381,133 50.5 % Residential Solar: Canadian Mountain Portfolio $ 1,603,136 $ 2,093,827 1.0 % Enfinity Colorado DHA Portfolio 1,400,000 1,671,317 0.8 Greenbacker Residential Solar Portfolio 28,100,000 28,373,526 13.0 Greenbacker Residential Solar Portfolio II 6,400,000 7,986,014 3.7 Subtotal $ 37,503,136 $ 40,124,684 18.5 % Wind: Greenbacker Wind Portfolio - California $ 9,500,000 $ 9,506,752 4.3 % Greenbacker Wind Portfolio - Idaho 7,320,000 6,799,153 3.0 Greenbacker Wind Portfolio - Montana 21,609,488 23,228,136 10.6 Greenbacker Wind Portfolio - Vermont 24,417,193 27,168,808 12.6 Subtotal $ 62,846,681 $ 66,702,849 30.5 % Energy Efficiency: GREC Energy Efficiency Portfolio $ 482,450 $ 504,637 0.2 % Renew AEC One, LLC 672,871 672,871 0.3 Subtotal $ 1,155,321 $ 1,177,508 0.5 % Total $ 212,361,027 $ 218,386,174 100.0 %
Schedule of investments by geographic region	The composition of the company’s investments as of December 31, 2018 by geographic region, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio United States: East Region $ 65,082,005 $ 67,541,264 22.0 % Mid-West Region 1,796,801 1,846,346 0.6 Mountain Region 69,619,383 69,553,178 22.6 South Region 98,476,770 95,332,608 31.0 West Region 61,736,290 70,821,165 23.1 Total United States $ 296,711,249 $ 305,094,561 99.3 % Canada: 1,603,136 2,081,554 0.7 Total $ 298,314,385 $ 307,176,115 100.0 % The composition of the company’s investments as of December 31, 2017 by geographic region, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio United States: East Region $ 59,828,924 61,876,000 28.3 % Mid-West Region 1,022,813 1,010,292 0.5 Mountain Region 40,588,577 42,220,262 19.3 South Region 57,033,202 57,716,376 26.4 West Region 52,284,375 53,469,417 24.5 Total United States $ 210,757,891 216,292,347 99.0 % Canada: 1,603,136 2,093,827 1.0 Total $ 212,361,027 218,386,174 100.0 %
Schedule of investments by industry	The composition of the company’s investments as of December 31, 2018 by industry, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio Commercial Solar $ 144,732,656 $ 147,571,531 48.1 % Residential Solar 37,503,136 41,918,094 13.6 Wind 63,446,680 65,165,744 21.2 Pre-Operational Assets 50,353,115 50,235,080 16.3 Other Investments 1,279,273 1,263,620 0.4 % Energy Efficiency 999,525 1,022,046 0.4 Total $ 298,314,385 $ 307,176,115 100.0 % The composition of the company’s investments as of December 31, 2017 by industry, at fair value, were as follows: Investments at Cost Investments at Fair Value Fair Value Percentage of Total Portfolio Commercial Solar $ 110,855,889 $ 110,381,133 50.5 % Residential Solar 37,503,136 40,124,684 18.5 Wind 62,846,681 66,702,849 30.5 Energy Efficiency 1,155,321 1,177,508 0.5 Total $ 212,361,027 $ 218,386,174 100 %

Fair Value Measurements - Inv_2

Fair Value Measurements - Investment (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of fair value measurements of investments, by major class	The following table presents fair value measurements of investments, by major class, as of December 31, 2018 according to the fair value hierarchy: Valuation Inputs Level 1 Level 2 Level 3 Fair Value Limited Liability Company Member Interests $ — $ — $ 304,542,921 $ 304,542,921 Capital Stock — — 2,081,554 2,081,554 Energy Efficiency Secured Loans — — 551,640 551,640 Total $ — $ — $ 307,176,115 $ 307,176,115 Other Financial Instruments* Unrealized appreciation on open interest rate swap contracts $ — $ 435,603 $ — $ 435,603 Unrealized depreciation on open interest rate swap contracts $ — $ (311,641 ) $ — $ (311,641 ) Total $ — $ 123,962 $ — $ 123,962 * Other financial instruments are derivatives, such as futures, forward currency contracts and swaps. These instruments are reflected at the unrealized appreciation (depreciation) on the instrument. The following table presents fair value measurements of investments, by major class, as of December 31, 2017 according to the fair value hierarchy: Valuation Inputs Level 1 Level 2 Level 3 Fair Value Limited Liability Company Member Interests $ — $ — $ 215,619,476 $ 215,619,476 Capital Stock — — 2,093,827 2,093,827 Energy Efficiency Secured Loans — — 672,871 672,871 Total $ — $ — $ 218,386,174 $ 218,386,174 Other Financial Instruments* Unrealized appreciation on open interest rate swap contracts $ — $ 156,068 $ — $ 156,068 Total $ — $ 156,068 $ — $ 156,068 * Other financial instruments are derivatives, such as futures, forward currency contracts and swaps. These instruments are reflected at the unrealized appreciation (depreciation) on the instrument.
Schedule of reconciliation of beginning and ending balances for investments and secured borrowings	The following table provides a reconciliation of the beginning and ending balances for investments that use Level 3 inputs for the year ended December 31, 2018: Balance as of December 31, 2017 Net change in unrealized appreciation on investments Realized gain Translation of assets and liabilities denominated in foreign currencies Purchases and other adjustments to cost (1) Sales and Repayments of investments (2) Balance as of December 31, 2018 Limited Liability Company Member Interests $ 215,619,476 $ 2,848,856 $ — $ — $ 90,574,589 $ (4,500,000 ) $ 304,542,921 Capital Stock 2,093,827 106,223 — (118,496 ) — — 2,081,554 Energy Efficiency – Secured Loans 672,871 — — — — (121,231 ) 551,640 Total $ 218,386,174 $ 2,955,079 $ — $ (118,496 ) $ 90,574,589 $ (4,621,231 ) $ 307,176,115 (1) Includes purchases of new investments, capitalized deal costs, effects of purchase price adjustments, paid-in-kind interest, return of capital and additional investments in existing investments, if any. (2) Includes principal repayments on loans. The following table provides a reconciliation of the beginning and ending balances for investments that use Level 3 inputs for the year ended December 31, 2017: Net change in unrealized Translation of assets and liabilities Purchases Sales and Balance as of appreciation denominated and other Repayments Balance as of December 31, on Realized in foreign adjustments of December 31, 2016 investments gain currencies to cost (1) investments (2) 2017 Limited Liability Company Member Interests $ 112,536,561 $ 5,748,138 $ 693,882 $ — $ 127,038,601 (30,397,706 ) 215,619,476 Capital Stock 1,815,169 180,895 — 97,763 — — 2,093,827 Energy Efficiency – Secured Loans 771,371 — — — — (98,500 ) 672,871 Total $ 115,123,101 $ 5,929,033 $ 693,882 $ 97,763 $ 127,038,601 $ (30,496,206 ) $ 218,386,174 (3) Includes purchases of new investments, capitalized deal costs, effects of purchase price adjustments, paid-in-kind interest, return of capital and additional investments in existing investments, if any. (4) Includes principal repayments on loans. The following table provides a reconciliation of the beginning and ending balances for investments that use Level 3 inputs for the year ended December 31, 2016: Translation Net change of assets and in unrealized liabilities Purchases Sales and Balance as of appreciation denominated and other Repayments Balance as of December 31, (depreciation) Realized in foreign adjustments of December 31, 2015 on investments gain currencies to cost (1) investments (2) Transfers in Transfers out 2016 Limited Liability Company Member Interests $ 48,708,304 $ (1,685,280 ) $ 4,578 $ — $ 39,115,694 $ (40,000 ) $ 26,433,265 $ — $ 112,536,561 Capital Stock 1,562,967 211,499 — 40,703 — — — — 1,815,169 Energy Efficiency – Secured Loans 1,183,295 — — — — (314,137 ) — (97,787 ) 771,371 Secured Loans – Other — — — — 26,335,478 — — (26,335,478 ) — Total $ 51,454,566 $ (1,473,781 ) $ 4,578 $ 40,703 $ 65,451,172 $ (354,137 ) $ 26,433,265 $ (26,433,265 ) $ 115,123,101 (1) Includes purchases of new investments, capitalized deal costs, effects of purchase price adjustments, paid-in-kind interest, return of capital and additional investments in existing investments, if any. (2) Includes principal repayments on loans.
Schedule of quantitative information about level 3 fair value measurements	As of December 31, 2018, all of the company’s portfolio investments utilized Level 3 inputs. The following table presents the quantitative information about Level 3 fair value measurements of the company’s investments as of December 31, 2018: Fair Value Valuation Techniques Unobservable Inputs Rates/Assumptions Commercial Solar $ 147,571,531 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 7.75% - 8.50%, 0.50% annual degradation in production, 22.2 - 35 years Residential Solar $ 41,918,094 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 7.25% - 11%, 0.50% annual degradation in production, 12.2 - 33 years Wind $ 65,165,744 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 8.50%, no annual degradation in production, 24 - 27.7 years Pre-Operational Assets $ 51,498,700 Transaction cost Not Applicable Not Applicable Other Investments $ 1,263,620 Transaction cost Not Applicable Not Applicable Energy Efficiency $ 1,022,046 Income and collateral based approach Market yields and value of collateral 10.25% - 20.40% As of December 31, 2017, all of the company’s portfolio investments utilized Level 3 inputs. The following table presents the quantitative information about Level 3 fair value measurements of the company’s investments as of December 31, 2017: Fair Value Valuation Techniques Unobservable Inputs Rates/Assumptions Commercial Solar $ 87,087,201 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 7.25% - 9.25%, 0.50% annual degradation in production, 13.5 - 34.3 years Commercial Solar $ 23,293,932 Transaction cost Not Applicable Not Applicable Residential Solar $ 40,124,684 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 7.25% - 9.25%, 0.50% annual degradation in production, 13.5 - 34.3 years Wind $ 66,702,849 Income approach Discount rate, future kWh Production, potential leverage and estimated remaining useful life 8.50%, no annual degradation in production, 27.9 - 29.0 years Energy Efficiency $ 1,177,508 Income and collateral based approach Market yields and value of collateral 10.25% - 20.40%

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of outstanding debt	The company’s outstanding debt as of December 31, 2018 and December 31, 2017 was as follows: December 31, 2018 December 31, 2017 Aggregate Principal Amount Available Principal Amount Outstanding Carrying Value Deferred Financing Costs Term Note Payable, Net of Financing Costs Aggregate Principal Amount Available Principal Amount Outstanding Carrying Value Deferred Financing Costs Term Note Payable, Net of Financing Costs Revolver $ 60,000,000 $ 30,665,460 $ 30,665,460 $ 1,138,414 $ 29,527,046 N/A N/A N/A N/A N/A Facility 1 Term Loan — — — — — — 3,893,889 3,893,889 745,430 3,148,459 Facility 2 Term Loan — — — — — — 9,761,905 9,761,905 — 9,761,905 Total $ 60,000,000 $ 30,665,460 $ 30,665,460 $ 1,138,414 $ 29,527,046 $ — $ 13,655,794 $ 13,655,794 $ 745,430 $ 12,910,364
Schedule of weighted average outstanding debt balance for credit facility	The following table shows the components of interest expense, commitment fees related to the Revolving Facility, amortized deferred financing costs, weighted average stated interest rate and weighted average outstanding debt balance for the credit facility for the year ended December 31, 2018: For the year Ended December 31, 2018 Credit Facility commitment fee $ 42,615 Credit Facility Loan interest 1,219,237 Amortization of deferred financing costs 222,394 Other* 464,436 Total $ 1,948,682 Weighted average interest rate on credit facility 4.14 % Weighted average outstanding balance of credit facility $ 29,896,416 *Primarily includes financing costs of credit facility and swap interest hedged against the credit facility. The following table shows the components of interest expense, commitment fees related to the Revolving Facility, amortized deferred financing costs, weighted average stated interest rate and weighted average outstanding debt balance for the credit facility for the year ended December 31, 2017: For the year Ended December 31, 2017 Revolver interest $ 444,303 Revolver commitment fee 81,109 Credit Facility Loan interest 157,811 Amortization of deferred financing costs 164,725 Total 847,948 Weighted average interest rate on credit facility. 4.87 % Weighted average outstanding balance of credit facility $ 8,481,848 The following table shows the components of interest expense, commitment fees related to the Revolving Facility, amortized deferred financing costs, weighted average stated interest rate and weighted average outstanding debt balance for the credit facility for the period July 11, 2016 through December 31, 2016: For the Revolver interest $ 164,179 Revolver commitment fee 29,927 Facility 1 Term Loan interest 96,248 Amortization of deferred financing costs 95,339 Other* (90,697 ) Total 294,996 Weighted average interest rate on credit facility. 4.37 % Weighted average outstanding balance of credit facility $ 10,991,000 * Primarily includes financing costs of credit facility and swap interest hedged against the credit facility.
Schedule of principal payments due on borrowings	The principal payments due on borrowings for each of the next five years ending December 31 and thereafter, are as follows: Year ending December 31: Principal Payments 2019 $ 2,519,220 2020 2,610,193 2021 2,570,228 2022 2,198,372 2023 2,209,630 Thereafter 18,557,817 Total $ 30,665,460

Members' Equity (Tables)

Members' Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Schedule of shares issued and outstanding	The following table is a summary of the shares issued and repurchased during the period and outstanding as of December 31, 2018: Shares Outstanding as of December 31, 2017 Shares Issued During the Period Shares Repurchased During the Period Shares Outstanding as of December 31, 2018 Class A shares 13,857,830 3,279,887 (422,979 ) 16,714,738 Class C shares 1,431,999 798,080 (7,601 ) 2,222,478 Class I shares 4,511,832 1,757,365 (59,781 ) 6,209,416 Class P-A shares — 15,478 — 15,478 Class P-I Shares 3,387,568 8,469,305 (15,481 ) 11,841,392 Total 23,189,229 14,320,115 (505,842 ) 37,003,502 The following table is a summary of the shares issued and repurchased during the period and outstanding as of December 31, 2017: Shares Outstanding as of December 31, 2016 Shares Issued During the Period Shares Converted During the Period Shares Repurchased During the Period Shares Outstanding as of December 31, 2017 Class A shares 10,878,502 3,348,253 — (368,925 ) 13,857,830 Class C shares 1,041,836 396,204 — (6,041 ) 1,431,999 Class I shares 2,754,491 1,838,656 — (81,315 ) 4,511,832 Class P-A shares 47,774 3,092 (50,866 ) — — Class P-I Shares 199,319 3,147,692 50,866 (10,309 ) 3,387,568 Total 14,921,922 8,733,897 — (466,590 ) 23,189,229
Schedule of reinvestment of distributions	The proceeds from shares sold and the value of shares issued through the reinvestment of distributions for each class of shares for the years ended December 31, 2018, 2017, 2016 were as follows: Class A Shares Class C Shares Class I Shares Class P-A Shares Class P-I Shares Total For the year ended December 31, 2018 Proceeds from Shares Sold $ 25,178,267 $ 6,378,209 $ 13,706,626 $ 135,375 $ 74,928,595 $ 120,327,072 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,815,909 $ 487,570 $ 1,823,310 $ — $ — $ 6,126,789 For the year ended December 31, 2017 Proceeds from Shares Sold $ 26,852,433 $ 3,102,082 $ 15,071,499 $ 27,075 $ 27,366,718 $ 72,419,807 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,127,873 $ 363,670 $ 1,255,991 $ — $ — $ 4,747,534 For the year ended December 31, 2016 Proceeds from Shares Sold $ 49,913,307 $ 6,957,212 $ 15,078,606 $ 419,175 $ 1,750,750 $ 74,119,050 Proceeds from Shares Issued through Reinvestment of Distributions $ 2,347,789 $ 257,384 $ 685,413 $ — $ — $ 3,290,586

Distributions (Tables)

Distributions (Tables)	12 Months Ended
	Dec. 31, 2018
Distributions Made to Members or Limited Partners [Abstract]
Schedule of the company declares distributions on each outstanding class A, C, I, P-A and P-I share	These distributions are calculated based on shareholders of record for each day in amounts equal to that exhibited in the table below based upon distribution period and class of share. Class of Share Distribution Period A C I P-A P-I 1-Nov-15 31-Jan-16 $ 0.0016478 $ 0.0016478 $ 0.0016478 — — 1-Feb-16 30-Apr-16 $ 0.0016551 $ 0.0016551 $ 0.0016551 — — 1-May-16 31-Jul-16 $ 0.0016617 $ 0.0016617 $ 0.0016617 $ 0.0015826 $ 0.0015826 1-Aug-16 31-Oct-16 $ 0.0016766 $ 0.0016766 $ 0.0016766 $ 0.0015968 $ 0.0015968 1-Nov-16 31-Jan-17 $ 0.0016856 $ 0.0016402 $ 0.0016856 $ 0.0016036 $ 0.0016036 1-Feb-17 31-Apr-17 $ 0.0016807 $ 0.0016350 $ 0.0016807 $ 0.0015952 $ 0.0015952 1-May-17 31-Jul-17 $ 0.0016710 $ 0.0016273 $ 0.0016710 $ 0.0015952 $ 0.0015828 1-Aug-17 31-Oct-17 $ 0.0016690 $ 0.0016265 $ 0.0016690 — $ 0.0015901 1-Nov-17 31-Jan-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 — $ 0.0015828 1-Feb-18 30-Apr-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 — $ 0.0015828 1-May-18 31-Jul-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 $ — $ 0.0015828 1-Aug-18 31-Oct-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 $ 0.0016479 $ 0.0015828 1-Nov-18 31-Dec-18 $ 0.0016690 $ 0.0016265 $ 0.0016690 $ 0.0016479 $ 0.0015828
Schedule of distributions declared	The following table reflects the distributions declared during the year ended December 31, 2018. Pay Date Paid in Cash Value of Shares Issued under DRP Total February 1, 2018 $ 728,738 $ 464,821 $ 1,193,559 March 1, 2018 682,039 428,310 1,110,349 April 2, 2018 790,925 474,370 1,265,295 May 1, 2018 792,185 475,874 1,268,059 June 1, 2018 883,662 507,728 1,391,390 July 2, 2018 927,638 502,333 1,429,971 August 1, 2018 1,013,883 529,333 1,543,216 September 4, 2018 1,078,310 541,479 1,619,789 October 1, 2018 1,097,313 529,751 1,627,064 November 1, 2018 1,178,736 555,383 1,734,119 December 3, 2018 1,177,142 546,446 1,723,588 January 2, 2019 1,260,777 570,961 1,831,738 Total $ 11,611,348 $ 6,126,789 $ 17,738,137 The following table reflects the distributions declared during the year ended December 31, 2017. Pay Date Paid in Cash Value of Shares Issued under DRP Total February 1, 2017 $ 431,686 $ 349,842 $ 781,528 March 1, 2017 413,270 332,761 746,031 April 3, 2017 482,113 371,902 854,015 May 1, 2017 486,864 370,463 857,327 June 1, 2017 524,909 383,585 908,494 July 3, 2017 534,165 382,339 916,504 August 1, 2017 572,833 406,993 979,826 September 1, 2017 600,962 415,864 1,016,826 October 2, 2017 603,869 411,848 1,015,717 November 1, 2017 637,604 436,753 1,074,357 December 1, 2017 656,495 430,860 1,087,355 January 2, 2018 711,306 454,324 1,165,630 Total $ 6,656,076 $ 4,747,534 $ 11,403,610 The following table reflects the distributions declared during the year ended December 31, 2016. Pay Date Paid in Cash Value of Shares Issued under DRP Total February 1, 2016 $ 171,410 $ 185,680 $ 357,090 March 1, 2016 182,825 195,193 378,018 April 1, 2016 221,088 221,729 442,817 May 2, 2016 234,799 241,934 476,733 June 1, 2016 261,003 271,362 532,365 July 1, 2016 270,112 277,033 547,145 August 1, 2016 296,391 288,859 585,250 September 1, 2016 323,445 299,790 623,235 October 3, 2016 334,152 299,699 633,851 November 1, 2016 356,589 321,863 678,452 December 1, 2016 371,493 320,165 691,658 January 3, 2017 403,983 367,279 771,262 Total $ 3,427,290 $ 3,290,586 $ 6,717,876
Schedule of cash distributions paid	Cash distributions paid during the periods presented were funded from the following sources noted below: For the year ended December 31, 2018 For the year ended December 31, 2017 For the year ended December 31, 2016 Cash from operations $ 11,611,348 $ 6,656,075 $ 3,180,297 Offering proceeds — — — Total cash distributions $ 11,611,348 $ 6,656,075 $ 3,180,297

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of income tax provision	The LLC conducts most of its operations through GREC, its taxable wholly-owned subsidiary. The consolidated income tax provision for the years ended December 31, 2018, 2017 and 2016 is comprised of the following: Current Deferred Total Year ended December 31, 2018: US federal $ — $ (1,218,349 ) $ (1,218,349 ) State and local — (254,810 ) (254,810 ) Foreign jurisdiction — — — Tax (benefit)/expense $ — $ (1,473,159 ) $ (1,473,159 ) Change in valuation allowance — (54,758 ) (54,758 ) Tax (benefit)/expense, net $ — $ (1,527,917 ) $ (1,527,917 ) Current Deferred Total Year ended December 31, 2017: US federal $ — $ 1,289,202 $ 1,289,202 State and local — 273,787 273,787 Foreign jurisdiction — — — Tax (benefit)/expense $ — $ 1,562,989 $ 1,562,989 Change in valuation allowance — 92,366 92,366 Tax (benefit)/expense, net $ — $ 1,655,355 $ 1,655,355 Current Deferred Total Year ended December 31, 2016: US federal $ — $ (2,916,807 ) $ (2,916,807 ) State and local — (360,921 ) (360,921 ) Foreign jurisdiction — — — Tax (benefit)/expense $ — $ (3,277,728 ) $ (3,277,728 ) Change in valuation allowance. — (2,251,666 ) (2,251,666 ) Tax (benefit)/expense, net $ — $ (5,529,394 ) $ (5,529,394 )
Schedule of reconciliation between the federal statutory rate and the effective tax rate	The following table represents the components of the income tax expense and the proportionate ratio of each components as follows: 2018 Percentage 2017 Percentage 2016 Percentage Net increase (decrease) in net assets from operations before tax, based on ASC 946, at the federal income tax rate $ 2,523,711 (165.17 )% $ 2,793,488 168.75 % $ 869,681 (15.73 )% Reversal of Greenbacker Renewable Energy, LLC’s (income)/loss treated as a partnership for U.S. tax purposes, at federal income tax rate $ 283,062 (18.53 )% $ 337,284 20.38 % $ 42,047 (0.76 )% Adjustment for Greenbacker Renewable Energy Corporation’s consolidated book income/(loss), based on standard GAAP accounting, at federal income tax rate $ (3,769,926 ) 246.74 % $ (2,225,352 ) (134.43 )% $ (2,066,516 ) 37.37 % Federal tax credit $ (255,196 ) 16.70 % $ — — % $ (1,762,020 ) 31.87 % State tax credit $ — — % $ — — % $ (229,419 ) 4.15 % Increase in income taxes resulting from: State and local taxes, net of federal benefit $ (270,036 ) 17.67 % $ 261,224 15.78 % $ (132,613 ) 2.40 % Change in state rate $ 15,226 (1.00 )% $ 12,562 0.76 % $ 1,112 (0.02 )% Change in federal rate $ — — % $ 383,783 23.18 % $ — — % Permanent differences, at federal income tax rate $ — — % $ — — % $ — — % Change in valuation allowances $ (54,758 ) 3.59 % $ 92,366 5.58 % $ (2,251,666 ) 40.72 % Actual provision for income taxes $ (1,527,917 ) 100.00 % $ 1,655,355 100.00 % $ (5,529,394 ) 100.00 %
Schedule of deferred tax assets	Deferred tax assets have been classified on the accompanying consolidated statements of assets and liabilities as of December 31, 2018 and 2017 as follows: 2018 2017 Amortization 60,181 63,480 Net operating losses 21,289,433 12,669,763 Federal tax credits 5,756,076 5,493,745 Unrealized gains (20,786,706 ) (13,381,165 ) Deferred tax assets $ 6,318,984 $ 4,845,823 Less: valuation allowance (267,027 ) (321,785 ) Deferred tax assets, net $ 6,051,957 $ 4,524,038
Schedule of tax carryforwards	As of December 31, 2018, the company has federal and state income tax net operating loss (“NOL”) and investment tax credit (“ITC”) carryforwards of which will expire on various dates through 2038 as follows: Expires Year Ending December 31, Federal NOL Amount Federal ITC Amount State ITC Amount State NOL Amount 2020 $ — $ — $ 802,822 $ — 2021 $ — $ — $ 422,885 $ — 2022 $ — $ — $ — $ 918,368 2023 $ — $ — $ — $ 2,454,562 2024 $ — $ — $ — $ 2,549,437 2025 $ — $ — $ — $ 673,181 2026 $ — $ — $ — $ 2,934,175 2027 $ — $ — $ — $ 4,162,481 2028 $ — $ — $ — $ — 2029 $ — $ — $ — $ — 2030 $ — $ — $ — $ 2,751,775 2031 $ — $ — $ — $ 5,377,684 2032 $ — $ — $ — $ 6,870,978 2033 $ — $ — $ — $ — 2034 $ 161,963 $ — $ — $ 156,188 2035 $ 6,693,198 $ 3,345,092 $ — $ 2,718,197 2036 $ 15,734,069 $ 1,955,780 $ — $ 5,911,423 2037 $ 26,927,165 $ — $ — $ 14,329,300 2038 $ — $ 255,196 $ — $ — Indefinite $ 29,662,690 $ — $ — $ —

Financial Highlights (Tables)

Financial Highlights (Tables)	12 Months Ended
	Dec. 31, 2018
Financial Highlights
Schedule of financial highlights	The following is a schedule of financial highlights of the company attributed to Class A, C, I, P-A and P-I shares for the year ended December 31, 2018. For the year ended December 31, 2018 Class A Shares Class C Shares Class I Shares Class P-A Shares (5) Class P-I Shares Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.68 $ 8.42 $ 8.68 $ 8.75 $ 8.81 Net investment income (3) 0.28 0.28 0.28 0.07 0.28 Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder 0.12 0.12 0.12 (0.05 ) 0.12 Change in translation of assets and liabilities denominated in foreign currencies (4) — — — — — Change in benefit from deferred taxes on unrealized depreciation on investments 0.08 0.08 0.08 0.12 0.08 Net increase in net assets attributed to common equityholders 0.48 0.48 0.48 0.14 0.48 Shareholder distributions: Distributions from net investment income (0.33 ) (0.33 ) (0.33 ) (0.08 ) (0.30 ) Distributions from offering proceeds (0.28 ) (0.26 ) (0.28 ) (0.14 ) (0.28 ) Offering costs and deferred sales commissions (0.03 ) (0.08 ) (0.04 ) (0.14 ) — Other (2) 0.02 0.11 0.03 0.02 0.05 Net decrease in members’ equity attributed to common shares (0.62 ) (0.56 ) (0.62 ) (0.34 ) (0.53 ) Net asset value for common shares at end of period $ 8.54 $ 8.34 $ 8.54 $ 8.55 $ 8.76 Common shareholders’ equity at end of period $ 142,791,899 $ 18,546,310 $ 53,046,260 $ 132,272 $ 103,742,870 Common shares outstanding at end of period 16,714,738 2,222,478 6,209,416 15,478 11,841,392 Ratio/Supplemental data for common shares (annualized): Total return attributed to common shares based on net asset value 5.45 % 6.19 % 5.44 % 1.06 % 6.16 % Ratio of net investment income to average net assets 3.24 % 3.26 % 3.20 % 1.97 % 2.86 % Ratio of operating expenses to average net assets 3.87 % 3.95 % 3.86 % 3.48 % 3.69 % Portfolio turnover rate 0.05 % 0.05 % 0.05 % 0.05 % 0.05 % (1) The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2018, which were 15,338,291, 1,803,985, 5,386,556, 11,042, and 7,266,426, respectively. (2) Represents the impact of different share amounts used in calculating certain per share data based on weighted average shares outstanding during the period and the impact of shares at a price other than the net asset value. (3) Does not reflect any incentive fees that may be payable to the Special Unitholder. (4) Amount is less than $0.01 per share. (5) Class P-A shares were reinstated for sale as of April 16, 2018 and first sold on August 6, 2018. The following is a schedule of financial highlights of the company attributed to Class A, C, I and P-I shares for the year ended December 31, 2017. For the year ended December 31, 2017 Class A Shares Class C Shares Class I Shares Class P-I Shares Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.69 $ 8.44 $ 8.69 $ 8.67 Net investment income (3) 0.25 0.25 0.25 0.25 Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder 0.35 0.35 0.35 0.35 Change in translation of assets and liabilities denominated in foreign currencies (4) 0.01 0.01 0.01 0.01 Change in benefit from deferred taxes on unrealized depreciation on investments 0.05 0.05 0.05 0.05 Net increase in net assets attributed to common equityholders 0.66 0.66 0.66 0.66 Shareholder distributions: Distributions from net investment income (0.39 ) (0.39 ) (0.39 ) (0.39 ) Distributions from offering proceeds (0.22 ) (0.22 ) (0.21 ) (0.19 ) Offering costs and deferred sales commissions.. (0.04 ) (0.15 ) (0.08 ) — Other (2) (0.02 ) 0.08 0.01 0.06 Net decrease in members’ equity attributed to common shares (0.01 ) (0.02 ) (0.01 ) 0.14 Net asset value for common shares at end of period $ 8.68 $ 8.42 $ 8.68 $ 8.81 Common shareholders’ equity at end of period.. $ 120,344,517 $ 12,053,349 $ 39,181,769 $ 29,858,889 Common shares outstanding at end of period 13,857,830 1,431,999 4,511,832 3,387,568 Ratio/Supplemental data for common shares (annualized): Total return attributed to common shares based on net asset value 6.90 % 6.77 % 6.90 % 8.65 % Ratio of net investment income to average net assets 2.96 % 3.04 % 2.96 % 2.92 % Ratio of operating expenses to average net assets. 3.64 % 3.74 % 3.64 % 3.59 % Portfolio turnover rate 19.15 % 19.15 % 19.15 % 19.15 % Â (1) The per share data for Class A, C, I and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2017, which were 12,384,101, 1,194,718, 3,529,998 and 1,792,632, respectively. (2) Represents the impact of different share amounts used in calculating certain per share data based on weighted average shares outstanding during the period and the impact of shares at a price other than the net asset value. (3) Does not reflect any incentive fees that may be payable to the Special Unitholder. The following is a schedule of financial highlights of the company attributed to Class A, C, I, P-A and P-I shares for the year ended December 31, 2016. For the year ended December 31, 2016 Class A Shares Class C Shares Class I Shares Class P-A Shares Class P-I Shares Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.54 $ 8.54 $ 8.54 $ 8.54 $ 8.54 Net investment income (3) 0.43 0.43 0.43 0.19 0.19 Net unrealized appreciation (depreciation) on investments,net of incentive allocation to special unitholder (0.10 ) (0.10 ) (0.10 ) (0.05 ) (0.05 ) Change in translation of assets and liabilities denominated in foreign currencies — — — — — Change in benefit from deferred taxes on unrealized appreciation on investments 0.40 0.40 0.40 0.18 0.17 Net increase in net assets attributed to common equityholders 0.73 0.73 0.73 0.32 0.31 Shareholder distributions:Distributions from net investment income (0.33 ) (0.33 ) (0.33 ) (0.15 ) (0.14 ) Distributions from offering proceeds (0.27 ) (0.27 ) (0.27 ) (0.11 ) (0.11 ) Offering costs and deferred sales commissions — (0.22 ) — — — Other (2) 0.02 (0.01 ) 0.02 0.07 0.07 Net increase in members’ equity attributed to common shares 0.15 (0.10 ) 0.15 0.13 0.13 Net asset value for common shares at end of period $ 8.69 $ 8.44 $ 8.69 $ 8.67 $ 8.67 Common shareholders’ equity at end of period $ 94,541,760 $ 8,796,002 $ 23,938,449 $ 414,145 $ 1,727,858 Common shares outstanding at end of period 10,878,502 1,041,836 2,754,491 47,774 199,319 Ratio/Supplemental data for common shares: Total return, net of expense reimbursement to/from advisor, attributed to common shares based on net asset value 8.79 % 5.65 % 8.79 % 4.59 % 4.49 % Ratio of net investment income, net of expense reimbursement to/from advisor, to average net assets 4.95 % 4.98 % 4.93 % 4.81 % 4.48 % Ratio of operating expenses, net of expense reimbursement to/from advisor, to average net assets 4.65 % 4.68 % 4.63 % 4.53 % 4.21 % Total return, excluding expense reimbursement to/from advisor, attributed to common shares based on net asset value 9.34 % 6.13 % 9.31 % 5.03 % 4.78 % Ratio of net investment income, excluding expense reimbursement to/from advisor, to average net assets 5.61 % 5.65 % 5.58 % 5.45 % 5.08 % Ratio of operating expenses, excluding expense reimbursement to/from advisor, to average net assets 3.99 % 4.02 % 3.97 % 3.88 % 3.61 % Portfolio turnover rate 0.43 % 0.43 % 0.43 % 0.43 % 0.43 % Â (1) The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2016, which were 8,330,061, 690,825, 1,962,616, 30,286 and 82,013, respectively. (2) Represents the impact of different share amounts used in calculating certain per share data based on weighted average shares outstanding during the period and organizational costs, which are not included in operating expenses nor subject to the expense reimbursement agreement, and the impact of shares at a price other than the net asset value. (3) Does not reflect any incentive fees that may be payable to the Special Unitholder.

Selected Quarterly Data - Una_2

Selected Quarterly Data - Unaudited (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of unaudited quarterly financial information	Presented in the following tables is a summary of the unaudited quarterly financial information for the years ended December 31, 2018, 2017, 2016, 2015 and 2014. The company believes that all necessary adjustments, consisting only of normal recurring adjustments, have been included in the amounts stated below to present fairly, and in accordance with GAAP, the selected quarterly information. For the quarter ended December 31, 2018 September 30, 2018 June 30, 2018 March 31, 2018 Total Investment income $ 4,540,427 $ 5,103,336 $ 4,984,874 $ 4,918,793 Net investment income $ (434,963 ) $ 1,988,378 $ 3,259,425 $ 3,271,370 Net gain (loss) on investments and foreign currency translation $ (1,693,642) $ (296,054) $ 2,341,771 $ 2,452,402 Change in (benefit) expense from deferred taxes on unrealized appreciation on investments $ 1,877,386 $ 2,275,076 $ 73,354 $ (1,239,228 ) Net increase (decrease) in net assets resulting from operations $ (251,219 ) $ 3,967,400 $ 5,674,550 $ 4,484,544 Net investment income (loss) per share - basic and diluted $ (0.01 ) $ 0.06 $ 0.12 $ 0.13 Net increase (decrease) in net assets resulting from operations per share - basic and diluted $ (0.01 ) $ 0.12 $ 0.21 $ 0.19 Net asset value per share at period end (Class A) $ 8.54 $ 8.69 $ 8.72 $ 8.70 Net asset value per share at period end (Class C) $ 8.34 $ 8.48 $ 8.50 $ 8.45 Net asset value per share at period end (Class I) $ 8.54 $ 8.69 $ 8.72 $ 8.70 Net asset value per share at period end (Class P-A) $ 8.55 $ 8.71 $ — $ — Net asset value per share at period end (Class P-I) $ 8.76 $ 8.89 $ 8.90 $ 8.84 For the quarter ended December 31, 2017 September 30, June 30, March 31, 2017 Total investment income $ 4,416,117 $ 3,663,635 $ 2,936,470 $ 2,366,899 Net investment income $ 229,297 $ 1,149,977 $ 1,986,899 $ 1,450,378 Net gain (loss) on investments and foreign currency translation $ 3,738,403 $ 1,579,619 $ 1,576,272 $ (108,245 ) Change in benefit (expense) from deferred taxes on unrealized appreciation on investments $ 1,198,186 $ 680,969 $ (653,366 ) $ (262,069 ) Net increase in net assets resulting from operations. $ 5,165,886 $ 3,410,565 $ 2,909,805 $ 1,080,064 Net investment income per share – basic and diluted. $ (0.01 ) $ 0.06 $ 0.11 $ 0.09 Net increase in net assets resulting from operations per share – basic and diluted. $ 0.22 $ 0.16 $ 0.15 $ 0.07 Net asset value per share at period end (Class A). $ 8.68 $ 8.64 $ 8.63 $ 8.64 Net asset value per share at period end (Class C). $ 8.42 $ 8.42 $ 8.41 $ 8.40 Net asset value per share at period end (Class I) $ 8.68 $ 8.64 $ 8.63 $ 8.64 Net asset value per share at period end (Class P-I). $ 8.81 $ 8.75 $ 8.73 $ 8.69 For the quarter ended December 31, September 30, 2016 June 30, 2016 March 31, 2016 Total investment income $ 2,848,655 $ 3,085,513 $ 1,645,291 $ 656,566 Net investment income $ 1,497,148 $ 1,730,438 $ 1,519,649 $ 23,132 Net gain (loss) on investments and foreign currency translation $ (1,706,876 ) $ 1,143,849 $ (231,426 ) $ (634,047 ) Change in benefit (expense) from deferred taxes on unrealized appreciation on investments $ 671,401 $ (8,372 ) $ 1,838,292 $ 1,885,335 Net increase in net assets resulting from operations $ 461,673 $ 2,865,915 $ 3,126,515 $ 1,274,420 Net investment income per share – basic and diluted $ 0.11 $ 0.14 $ 0.15 $ 0.00 Net increase in net assets resulting from operations per share – basic and diluted. $ 0.03 $ 0.24 $ 0.30 $ 0.16 Net asset value per share at period end (Class A) $ 8.69 $ 8.74 $ 8.69 $ 8.56 Net asset value per share at period end (Class C) $ 8.44 $ 8.49 $ 8.43 $ 8.56 Net asset value per share at period end (Class I) $ 8.69 $ 8.74 $ 8.69 $ 8.56 Net asset value per share at period end (Class P-A) $ 8.67 $ 8.74 $ — $ — Net asset value per share at period end (Class P-I) $ 8.67 $ 8.74 $ — $ — For the quarter ended December 31, September 30, June 30, March 31, 2015 Total investment income $ 421,488 $ 740,773 $ 633,646 $ 58,215 Net investment income (loss) $ 253,576 $ 270,523 $ 333,917 $ (118,483 ) Net gain (loss) on investments and foreign currency translation $ 666,498 $ 376,473 $ (46,396 ) $ 385,490 Change in benefit from deferred taxes on unrealized appreciation on investments $ 127,015 $ — $ — $ — Net increase in net assets resulting from operations $ 1,047,089 $ 646,996 $ 287,521 $ 267,007 Net investment income (loss) per share – basic and diluted $ 0.09 $ 0.07 $ 0.14 $ (0.08 ) Net increase in net assets resulting from operations per share – basic and diluted $ 0.20 $ 0.17 $ 0.12 $ 0.18 Net asset value per share at period end $ 8.54 $ 8.52 $ 8.50 $ 8.50 For the quarter ended December 31, September 30, 2014 (1) June 30, (1)(2) Total investment income $ 37,907 $ 304 $ 80 Net investment loss $ (106,838 ) $ (35,547 ) $ (53,464 ) Net gain (loss) on investments and foreign currency translation $ (32,636 ) $ 81,865 $ — Net increase (decrease) in net assets resulting from operations $ (139,474 ) $ 46,318 $ (53,464 ) Net investment loss per share – basic and diluted. $ (0.13 ) $ (0.10 ) $ (0.19 ) Net increase (decrease) in net assets resulting from operations per share – basic and diluted $ (0.16 ) $ 0.09 $ (0.19 ) Net asset value per share at period end $ 8.50 $ 8.50 $ 8.50 (1) As the company had no substantive operations prior to April 25, 2014, the first quarter of 2014 has been omitted. (2) The selected financial information for the June 30, 2014 quarter consists of the company’s commencement of operations (April 25, 2014 through June 30, 2014).

Organization and Operations o_2

Organization and Operations of the Company (Details Narrative) - Maximum [Member] - USD ($)	Dec. 31, 2018	Jul. 25, 2013
Distribution Reinvestment Plan [Member]
Dollar value of shares offering	$ 200,000,000	$ 250,000,000
Limited Liability Company [Member]
Dollar value of shares offering	$ 1,000,000,000	$ 1,500,000,000

Significant Accounting Polici_4

Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic and diluted
Net increase in net assets resulting from operations attributed to common equityholders	$ 13,314,380	$ 11,330,663	$ 8,014,196
Weighted average common shares outstanding (in shares)	29,799,735	18,922,343	11,043,156
Net increase in net assets resulting from operations attributed to common equityholders per share	$ 0.45	$ 0.60	$ 0.73

Significant Accounting Polici_5

Significant Accounting Policies (Details 1) - Advisor And Dealer Manager [Member] - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Total O&O Costs Incurred by the Advisor and Dealer Manager	$ 9,371	$ 8,671
Amounts previously reimbursed to the Advisor/Dealer Manager by the company	9,106	8,381
Amounts payable to Advisor/Dealer Manager by the company	19	10
Amounts of the contingent liability subject to payment by the company only upon adequate gross offering proceeds being raised	$ 246	$ 280

Significant Accounting Polici_6

Significant Accounting Policies (Details 2) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Asset Derivatives	$ 435,603	$ 156,068
Liability Derivatives	311,641
Interest Rate Risk [Member] | Swap Contracts [Member]
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Asset Derivatives	435,603
Liability Derivatives	$ 311,641

Significant Accounting Polici_7

Significant Accounting Policies (Details 3) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in net unrealized depreciation on derivative transactions	$ (32,106)	$ 65,371	$ 90,697
Interest Rate Risk [Member] | Swap Contracts [Member]
Change in net unrealized depreciation on derivative transactions	$ 32,106

Significant Accounting Polici_8

Significant Accounting Policies (Details Narrative) - USD ($)	Feb. 07, 2017	Dec. 31, 2018	Dec. 31, 2017
Capital gains incentive distribution allocation		$ 1,797,138	$ 1,236,243
Deferred sales commissions		191,706	$ 249,858
Interest Rate Swaps [Member]
Average notional amount		$ 58,080,777
Greenbacker Capital Management LLC [Member]
Limit of offering costs reimbursement to advisor		15.00%
Target offering expense ratio		4.00%
Percentage of reimbursement out of gross offering proceeds		15.00%
Organization and offering costs due to termination of registration statement		$ 7,556,000
Percentage of organization and offering costs due to termination of registration statement	4.80%	4.80%

Investments (Details)

Investments (Details) - USD ($)		Dec. 31, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
Investments at Cost		$ 298,314,385	$ 212,361,027
Investments at Fair Value		$ 307,176,115	$ 218,386,174
Fair Value Percentage of Total Portfolio	[1]	100.00%	100.00%
Commercial Solar [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 144,732,656	$ 110,855,889
Investments at Fair Value		$ 147,571,531	$ 110,381,133
Fair Value Percentage of Total Portfolio		48.10%	50.50%
Commercial Solar [Member] | East To West Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 37,079,887	$ 27,934,875
Investments at Fair Value		$ 33,665,088	$ 27,200,000
Fair Value Percentage of Total Portfolio		10.90%	12.40%
Commercial Solar [Member] | Raleigh Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 20,822,198	$ 20,672,198
Investments at Fair Value		$ 21,358,997	$ 22,850,465
Fair Value Percentage of Total Portfolio		7.00%	10.40%
Commercial Solar [Member] | Foresight Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 13,650,000	$ 13,200,071
Investments at Fair Value		$ 14,357,201	$ 13,200,071
Fair Value Percentage of Total Portfolio		4.70%	6.00%
Commercial Solar [Member] | Green Maple Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 17,582,823	$ 13,075,000
Investments at Fair Value		$ 16,066,837	$ 11,956,821
Fair Value Percentage of Total Portfolio		5.20%	5.50%
Commercial Solar [Member] | Golden Horizons Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 9,400,000	$ 9,450,000
Investments at Fair Value		$ 14,445,071	$ 9,482,075
Fair Value Percentage of Total Portfolio		4.70%	4.30%
Commercial Solar [Member] | Magnolia Sun Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 10,775,000	$ 10,775,000
Investments at Fair Value		$ 8,258,786	$ 9,635,508
Fair Value Percentage of Total Portfolio		2.70%	4.40%
Commercial Solar [Member] | Midway III Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 11,552,904	$ 10,093,861
Investments at Fair Value		$ 13,265,608	$ 10,093,861
Fair Value Percentage of Total Portfolio		4.30%	4.60%
Commercial Solar [Member] | Six States Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 12,470,306	$ 4,770,306
Investments at Fair Value		$ 13,440,025	$ 4,756,893
Fair Value Percentage of Total Portfolio		4.40%	2.30%
Commercial Solar [Member] | Sunny Mountain Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 884,578	$ 884,578
Investments at Fair Value		$ 1,107,041	$ 1,205,439
Fair Value Percentage of Total Portfolio		0.40%	0.60%
Commercial Solar [Member] | Sun Farm Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 10,514,960
Investments at Fair Value		$ 11,606,877
Fair Value Percentage of Total Portfolio		3.80%
Residential Solar [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 37,503,136	$ 37,503,136
Investments at Fair Value		$ 41,918,094	$ 40,124,684
Fair Value Percentage of Total Portfolio		13.60%	18.50%
Residential Solar [Member] | Canadian Mountain Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 1,603,136	$ 1,603,136
Investments at Fair Value		$ 2,081,554	$ 2,093,827
Fair Value Percentage of Total Portfolio		0.60%	1.00%
Residential Solar [Member] | Enfinity Colorado DHA Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 1,400,000	$ 1,400,000
Investments at Fair Value		$ 1,700,728	$ 1,671,317
Fair Value Percentage of Total Portfolio		0.60%	0.80%
Residential Solar [Member] | Greenbacker Residential Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 28,100,000	$ 28,100,000
Investments at Fair Value		$ 27,372,253	$ 28,373,526
Fair Value Percentage of Total Portfolio		8.90%	13.00%
Residential Solar [Member] | Greenbacker Residential Solar Portfolio II [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 6,400,000	$ 6,400,000
Investments at Fair Value		$ 10,763,559	$ 7,986,014
Fair Value Percentage of Total Portfolio		3.50%	3.70%
Alternative Energy - Wind [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 63,446,680	$ 62,846,681
Investments at Fair Value		$ 65,165,744	$ 66,702,849
Fair Value Percentage of Total Portfolio		21.20%	30.50%
Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - California [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 9,500,000	$ 9,500,000
Investments at Fair Value		$ 8,070,745	$ 9,506,752
Fair Value Percentage of Total Portfolio		2.60%	4.30%
Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - Idaho [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 7,320,000	$ 7,320,000
Investments at Fair Value		$ 6,385,631	$ 6,799,153
Fair Value Percentage of Total Portfolio		2.10%	3.00%
Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - Montana [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 21,709,487	$ 21,609,488
Investments at Fair Value		$ 21,956,868	$ 23,228,136
Fair Value Percentage of Total Portfolio		7.10%	10.60%
Alternative Energy - Wind [Member] | Greenbacker Wind Portfolio - Vermont [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 24,917,193	$ 24,417,193
Investments at Fair Value		$ 28,752,500	$ 27,168,808
Fair Value Percentage of Total Portfolio		9.40%	12.60%
Energy Efficiency [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 999,525	$ 1,155,321
Investments at Fair Value		$ 1,022,046	$ 1,177,508
Fair Value Percentage of Total Portfolio		0.40%	0.50%
Energy Efficiency [Member] | GREC Energy Efficiency Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 447,885	$ 482,450
Investments at Fair Value		$ 470,406	$ 504,637
Fair Value Percentage of Total Portfolio		0.20%	0.20%
Energy Efficiency [Member] | 10.25% Renew AEC One, LLC Due 2025-02-24 [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 551,640	$ 672,871
Investments at Fair Value		$ 551,640	$ 672,871
Fair Value Percentage of Total Portfolio		0.20%	0.30%
Pre-Operational Assets [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 50,353,115
Investments at Fair Value		$ 50,235,080
Fair Value Percentage of Total Portfolio		16.30%
Pre-Operational Assets [Member] | Colorado CSG Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 27,333,205
Investments at Fair Value		$ 27,215,170
Fair Value Percentage of Total Portfolio		8.90%
Pre-Operational Assets [Member] | Phoenix Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 9,964,515
Investments at Fair Value		$ 9,964,515
Fair Value Percentage of Total Portfolio		3.20%
Pre-Operational Assets [Member] | SE Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 7,178,207
Investments at Fair Value		$ 7,178,207
Fair Value Percentage of Total Portfolio		2.30%
Pre-Operational Assets [Member] | Turquoise Solar Portfolio [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 5,877,188
Investments at Fair Value		$ 5,877,188
Fair Value Percentage of Total Portfolio		1.90%
Other Investments [Member] | Other Investments [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 1,279,273
Investments at Fair Value		$ 1,263,620
Fair Value Percentage of Total Portfolio		0.40%
[1]	Percentages are based on net assets of $320,056,749 as of December 31, 2018.

Investments (Details 1)

Investments (Details 1) - USD ($)		Dec. 31, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
Investments at Cost		$ 298,314,385	$ 212,361,027
Investments at Fair Value		$ 307,176,115	$ 218,386,174
Fair Value Percentage of Total Portfolio	[1]	100.00%	100.00%
Total United States [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 296,711,249	$ 210,757,891
Investments at Fair Value		$ 305,094,561	$ 216,292,347
Fair Value Percentage of Total Portfolio		99.30%	99.00%
Canada [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 1,603,136	$ 1,603,136
Investments at Fair Value		$ 2,081,554	$ 2,093,827
Fair Value Percentage of Total Portfolio		0.70%	1.00%
East Region [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 65,082,005	$ 59,828,924
Investments at Fair Value		$ 67,541,264	$ 61,876,000
Fair Value Percentage of Total Portfolio		22.00%	28.30%
Mid-West Region [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 1,796,801	$ 1,022,813
Investments at Fair Value		$ 1,846,346	$ 1,010,292
Fair Value Percentage of Total Portfolio		0.60%	0.50%
Mountain Region [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 69,619,383	$ 40,588,577
Investments at Fair Value		$ 69,553,178	$ 42,220,262
Fair Value Percentage of Total Portfolio		22.60%	19.30%
South Region [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 98,476,770	$ 57,033,202
Investments at Fair Value		$ 95,332,608	$ 57,716,376
Fair Value Percentage of Total Portfolio		31.00%	26.40%
West Region [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 61,736,290	$ 52,284,375
Investments at Fair Value		$ 70,821,165	$ 53,469,417
Fair Value Percentage of Total Portfolio		23.10%	24.50%
[1]	Percentages are based on net assets of $320,056,749 as of December 31, 2018.

Investments (Details 2)

Investments (Details 2) - USD ($)		Dec. 31, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
Investments at Cost		$ 298,314,385	$ 212,361,027
Investments at Fair Value		$ 307,176,115	$ 218,386,174
Fair Value Percentage of Total Portfolio	[1]	100.00%	100.00%
Commercial Solar [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 144,732,656	$ 110,855,889
Investments at Fair Value		$ 147,571,531	$ 110,381,133
Fair Value Percentage of Total Portfolio		48.10%	50.50%
Residential Solar [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 37,503,136	$ 37,503,136
Investments at Fair Value		$ 41,918,094	$ 40,124,684
Fair Value Percentage of Total Portfolio		13.60%	18.50%
Alternative Energy - Wind [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 63,446,680	$ 62,846,681
Investments at Fair Value		$ 65,165,744	$ 66,702,849
Fair Value Percentage of Total Portfolio		21.20%	30.50%
Other Investments [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 1,279,273
Investments at Fair Value		$ 1,263,620
Fair Value Percentage of Total Portfolio		0.40%
Energy Efficiency [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 999,525	$ 1,155,321
Investments at Fair Value		$ 1,022,046	$ 1,177,508
Fair Value Percentage of Total Portfolio		0.40%	0.50%
Pre-Operational Assets [Member]
Investment Holdings [Line Items]
Investments at Cost		$ 50,353,115
Investments at Fair Value		$ 50,235,080
Fair Value Percentage of Total Portfolio		16.30%
[1]	Percentages are based on net assets of $320,056,749 as of December 31, 2018.

Investments (Details Narrative)

Investments (Details Narrative)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Description of control investment	The company owns 25% or more of the voting securities of such company, have greater than 50% representation on such company’s board of directors, or investments in limited liability companies for which the company serves managing member.	The company owns 25% or more of the voting securities of such company, have greater than 50% representation on such company’s board of directors, or investments in limited liability companies for which the company serves managing member.

Fair Value Measurements - Inv_3

Fair Value Measurements - Investments (Details) - USD ($)		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value		$ 307,176,115	$ 218,386,174
Financial instruments of fair value	[1]	123,962	156,068
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments of fair value	[1]	435,603	156,068
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments of fair value	[1]	(311,641)
10.25% Renew AEC One, LLC Due 2025-02-24 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value		551,640	672,871
Capital Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value		2,081,554	2,093,827
Limited Liability Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value		304,542,921	215,619,476
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value
Financial instruments of fair value	[1]
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments of fair value	[1]
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments of fair value	[1]
Fair Value, Inputs, Level 1 [Member] | 10.25% Renew AEC One, LLC Due 2025-02-24 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value
Fair Value, Inputs, Level 1 [Member] | Capital Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value
Fair Value, Inputs, Level 1 [Member] | Limited Liability Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value
Financial instruments of fair value	[1]	123,962	156,068
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments of fair value	[1]	435,603	156,068
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments of fair value	[1]	(311,641)
Fair Value, Inputs, Level 2 [Member] | 10.25% Renew AEC One, LLC Due 2025-02-24 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value
Fair Value, Inputs, Level 2 [Member] | Capital Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value
Fair Value, Inputs, Level 2 [Member] | Limited Liability Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value		307,176,115	218,386,174	$ 115,123,101
Financial instruments of fair value	[1]
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments of fair value	[1]
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments of fair value	[1]
Fair Value, Inputs, Level 3 [Member] | 10.25% Renew AEC One, LLC Due 2025-02-24 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value		551,640	672,871	771,371
Fair Value, Inputs, Level 3 [Member] | Capital Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value		2,081,554	2,093,827	1,815,169
Fair Value, Inputs, Level 3 [Member] | Limited Liability Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value		$ 304,542,921	$ 215,619,476	$ 112,536,561
[1]	Other financial instruments are derivatives, such as futures, forward currency contracts and swaps. These instruments are reflected at the unrealized appreciation (depreciation) on the instrument.

Fair Value Measurements - Inv_4

Fair Value Measurements - Investments (Details 1) - USD ($)		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value		$ 218,386,174
Net change in unrealized appreciation (depreciation) on investments		2,955,079	$ 5,929,033	$ (1,473,781)
Translation of assets and liabilities denominated in foreign currencies		(118,496)	97,763	40,703
Sales and Repayments of investments				26,335,478
Investments at fair value		307,176,115	218,386,174
10.25% Renew AEC One, LLC Due 2025-02-24 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value		672,871
Investments at fair value		551,640	672,871
Capital Stock [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value		2,093,827
Investments at fair value		2,081,554	2,093,827
Limited Liability Company [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value		215,619,476
Investments at fair value		304,542,921	215,619,476
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value		218,386,174	115,123,101
Net change in unrealized appreciation (depreciation) on investments		2,955,079	6,026,796	1,433,078
Translation of assets and liabilities denominated in foreign currencies		(118,496)	97,763	40,703
Purchases and other adjustments to cost	[1]	90,574,589	127,038,601	65,451,172
Sales and Repayments of investments	[2]	(4,621,231)	(30,496,206)	(354,137)
Transfer in				26,433,265
Transfers out				(26,433,265)
Investments at fair value		307,176,115	218,386,174	115,123,101
Fair Value, Inputs, Level 3 [Member] | 10.25% Renew AEC One, LLC Due 2025-02-24 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value		672,871	771,371
Net change in unrealized appreciation (depreciation) on investments
Realized gain
Translation of assets and liabilities denominated in foreign currencies
Purchases and other adjustments to cost	[1]
Sales and Repayments of investments	[2]	(121,231)	(98,500)	(314,137)
Transfer in
Transfers out				(97,787)
Investments at fair value		551,640	672,871	771,371
Fair Value, Inputs, Level 3 [Member] | Secured Loan Other [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value
Net change in unrealized appreciation (depreciation) on investments
Realized gain
Translation of assets and liabilities denominated in foreign currencies
Purchases and other adjustments to cost	[1]			26,335,478
Sales and Repayments of investments	[2]
Transfer in
Transfers out				(26,335,478)
Investments at fair value
Fair Value, Inputs, Level 3 [Member] | Capital Stock [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value		2,093,827	1,815,169
Net change in unrealized appreciation (depreciation) on investments		106,223	180,895	211,499
Realized gain
Translation of assets and liabilities denominated in foreign currencies		(118,496)	97,763	40,703
Purchases and other adjustments to cost	[1]
Sales and Repayments of investments	[2]
Transfer in
Transfers out
Investments at fair value		2,081,554	2,093,827	1,815,169
Fair Value, Inputs, Level 3 [Member] | Limited Liability Company [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value		215,619,476	112,536,561
Net change in unrealized appreciation (depreciation) on investments		2,848,856	5,748,138	(1,685,280)
Realized gain			693,882	4,578
Translation of assets and liabilities denominated in foreign currencies
Purchases and other adjustments to cost	[1]	90,574,589	127,038,601	39,115,694
Sales and Repayments of investments	[2]	(4,500,000)	(30,397,706)	(40,000)
Transfer in				26,433,265
Transfers out
Investments at fair value		$ 304,542,921	$ 215,619,476	$ 112,536,561
[1]	Includes purchases of new investments, capitalized deal costs, effects of purchase price adjustments, paid-in-kind interest, return of capital and additional investments in existing investments, if any.
[2]	Includes principal repayments on loans.

Fair Value Measurements - Inv_5

Fair Value Measurements - Investments (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments at Fair Value	$ 307,176,115	$ 218,386,174
Fair Value, Inputs, Level 3 [Member]
Investments at Fair Value	307,176,115	218,386,174	$ 115,123,101
Fair Value, Inputs, Level 3 [Member] | Pre-Operational Assets [Member]
Investments at Fair Value	$ 51,498,700
Valuation Techniques	Transaction cost
Fair Value, Inputs, Level 3 [Member] | Other Investments [Member]
Investments at Fair Value	$ 1,263,620
Valuation Techniques	Transaction cost
Fair Value, Inputs, Level 3 [Member] | Energy Efficiency [Member]
Investments at Fair Value	$ 1,022,046	$ 1,177,508
Valuation Techniques	Income and collateral based approach	Income and collateral based approach
Unobservable Inputs	Market yields and value of collateral	Market yields and value of collateral
Fair Value, Inputs, Level 3 [Member] | Energy Efficiency [Member] | Minimum [Member]
Measurement Input	10.25%	10.25%
Fair Value, Inputs, Level 3 [Member] | Energy Efficiency [Member] | Maximum [Member]
Measurement Input	20.40%	20.40%
Fair Value, Inputs, Level 3 [Member] | Commercial Solar [Member]
Investments at Fair Value	$ 147,571,531	$ 87,087,201
Valuation Techniques	Income approach	Income approach
Unobservable Inputs	Discount rate, future kWh Production, potential leverage and estimated remaining useful life	Discount rate, future kWh Production, potential leverage and estimated remaining useful life
Fair value Assumption	0.50%	0.50%
Fair Value, Inputs, Level 3 [Member] | Commercial Solar [Member] | Minimum [Member]
Measurement Input	7.75%	7.25%
Expected term	22 years 2 months 12 days	13 years 6 months
Fair Value, Inputs, Level 3 [Member] | Commercial Solar [Member] | Maximum [Member]
Measurement Input	8.50%	9.25%
Expected term	35 years	34 years 3 months 18 days
Fair Value, Inputs, Level 3 [Member] | Residential Solar [Member]
Investments at Fair Value	$ 41,918,094	$ 40,124,684
Valuation Techniques	Income approach	Income approach
Unobservable Inputs	Discount rate, future kWh Production, potential leverage and estimated remaining useful life	Discount rate, future kWh Production, potential leverage and estimated remaining useful life
Fair value Assumption	0.50%	0.50%
Fair Value, Inputs, Level 3 [Member] | Residential Solar [Member] | Minimum [Member]
Measurement Input	7.25%	7.25%
Expected term	12 years 2 months 12 days	13 years 6 months
Fair Value, Inputs, Level 3 [Member] | Residential Solar [Member] | Maximum [Member]
Measurement Input	11.00%	9.25%
Expected term	33 years	34 years 3 months 18 days
Fair Value, Inputs, Level 3 [Member] | Alternative Energy - Wind [Member]
Investments at Fair Value	$ 65,165,744	$ 66,702,849
Valuation Techniques	Income approach	Income approach
Unobservable Inputs	Discount rate, future kWh Production, potential leverage and estimated remaining useful life	Discount rate, future kWh Production, potential leverage and estimated remaining useful life
Measurement Input	8.50%	8.50%
Fair Value, Inputs, Level 3 [Member] | Alternative Energy - Wind [Member] | Minimum [Member]
Measurement Input	8.50%
Expected term	24 years	27 years 10 months 24 days
Fair Value, Inputs, Level 3 [Member] | Alternative Energy - Wind [Member] | Maximum [Member]
Expected term	27 years 8 months 12 days	29 years
Fair Value, Inputs, Level 3 [Member] | Commercial Solar [Member]
Investments at Fair Value		$ 23,293,932
Valuation Techniques		Transaction cost

Fair Value Measurements - Inv_6

Fair Value Measurements - Investments (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net change in unrealized appreciation (depreciation) on investments	$ 2,955,079	$ 5,929,033	$ (1,473,781)
Unrealized gain (loss) on foreign currency transaction	(118,496)	97,763	40,703
Fair Value, Inputs, Level 3 [Member]
Net change in unrealized appreciation (depreciation) on investments	2,955,079	6,026,796	1,433,078
Fair value of unrealized depreciation	$ 2,804,477	$ 6,092,167	$ 1,342,381

Related Party Agreements And _2

Related Party Agreements And Transactions Agreements (Details Narrative) - USD ($)	Feb. 07, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Management fees		$ 5,803,893	$ 3,351,250	$ 2,018,434
Incentive allocation		560,895	139,692
Increase (decrease) in incentive allocation expense			1,235,657	(285,673)
Payment for dealer manager fees		833,043	827,709	1,332,908
Asset management and accounting services costs		$ 2,438,486	2,444,282	4,613,001
Special unitholder [Member]
Hurdle rate, quarterly		1.75%
Hurdle rate, annualized		7.00%
Percentage of capital gains incentive distribution		20.00%
Percentage of liquidation incentive distribution		20.00%
Liquidation arrears period		30 days
Due to advisor		$ 19,181	10,417
SC Distributors, LLC [Member] | Common Class A [Member] | Maximum [Member]
Percentage of selling commision		7.00%
Percentage of dealer manager fees		2.75%
SC Distributors, LLC [Member] | Common Class C [Member]
Description of distribution fee		With respect to Class C shares only, the company will pay the dealer manager a distribution fee that accrues daily in an amount equal to 1/365th of 0.80% of the amount of the net asset value for the Class C shares for such day on a continuous basis from year to year.
SC Distributors, LLC [Member] | Common Class C [Member] | Maximum [Member]
Percentage of selling commision		3.00%
Percentage of dealer manager fees		2.75%
SC Distributors, LLC [Member] | Common Class I [Member] | Maximum [Member]
Percentage of dealer manager fees		1.75%
SC Distributors, LLC [Member] | Common Class P-A [Member] | Maximum [Member]
Percentage of selling commision		6.00%
Percentage of dealer manager fees		2.50%
Greenbacker Capital Management LLC [Member]
Limit of offering costs reimbursement to advisor		15.00%
Target offering expense ratio		4.00%
Percentage of organization and offering costs due to termination of registration statement	4.80%	4.80%
Percentage of reimbursement out of gross offering proceeds		15.00%
Base management fees payable, monthly rate		0.167%
Base management fees payable, annual rate		2.00%
Percentage of operating expense		5.00%
Operating expense, reimbursement period		30 days
Past operating expenses assumed by the adviser				636,926
Asset management and accounting services costs		$ 0	$ 115,849	$ 203,381
Greenbacker Capital Management LLC [Member] | Common Class A [Member]
Shares issued		23,601	23,601
Special unitholder [Member] | Investment Income Exceeds 2.1875% Quarterly [Member]
Hurdle rate, quarterly		8.75%
Hurdle rate, annualized		7.00%
Percentage of incentive distribution		20.00%
Special unitholder [Member] | Investment Income Exceeds The Hurdle Rate Less Than 2.1875% Quarterly [Member]
Hurdle rate, quarterly		8.75%
Hurdle rate, annualized		7.00%
Percentage of incentive distribution		100.00%

Borrowings (Details)

Borrowings (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Financing Costs	$ 615,378		$ 1,005,494
Credit Agreement [Member] | GREC Holdco [Member]
Aggregate Principal Amount Available	60,000,000
Principal Amount Outstanding	30,665,460	13,655,794
Carrying Value	30,665,460	13,655,794
Deferred Financing Costs	1,138,414	745,430
Term Note Payable, Net of Financing Costs	29,527,046	12,910,364
Credit Agreement [Member] | GREC Holdco [Member] | Revolver [Member]
Aggregate Principal Amount Available	60,000,000
Principal Amount Outstanding	30,665,460
Carrying Value	30,665,460
Deferred Financing Costs	1,138,414
Term Note Payable, Net of Financing Costs	29,527,046
Credit Agreement [Member] | GREC Holdco [Member] | Facility 1 Term Loan [Member]
Aggregate Principal Amount Available
Principal Amount Outstanding		3,893,889
Carrying Value		3,893,889
Deferred Financing Costs		745,430
Term Note Payable, Net of Financing Costs		3,148,459
Credit Agreement [Member] | GREC Holdco [Member] | Facility 2 Term Loan [Member]
Aggregate Principal Amount Available
Principal Amount Outstanding		9,761,905
Carrying Value		9,761,905
Deferred Financing Costs
Term Note Payable, Net of Financing Costs		$ 9,761,905

Borrowings (Details 1)

Borrowings (Details 1) - USD ($)		6 Months Ended	12 Months Ended
		Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Revolver interest		$ 164,179	$ 1,219,237	$ 444,303
Commitment fee		29,927	42,615	81,109
Facility 1 Term Loan interest		96,248		157,811
Amortization of deferred financing costs		95,339	222,394	164,725
Other	[1]	(90,697)	464,436
Total		$ 294,996	$ 1,948,682	$ 847,948
Weighted average interest rate on credit facility		4.37%	4.14%	4.87%
Weighted average outstanding balance of credit facility		$ 10,991,000	$ 29,896,416	$ 8,481,848
[1]	Primarily includes financing costs of credit facility and swap interest hedged against the credit facility.

Borrowings (Details 2)

Borrowings (Details 2) - Credit Agreement [Member] - GREC Holdco [Member]	Dec. 31, 2018USD ($)
Year ending December 31:
2019	$ 2,519,220
2020	2,610,193
2021	2,570,228
2022	2,198,372
2023	2,209,630
Thereafter	18,557,817
Total	$ 30,665,460

Borrowings (Details Narrtive)

Borrowings (Details Narrtive) - GREC Holdco [Member] - USD ($)	Jun. 18, 2018	Jan. 05, 2018	Dec. 31, 2018	Jul. 29, 2016	Jul. 11, 2016
Credit Agreement [Member] | Facility 1 Term Loan [Member]
Current borrowing capacity					$ 4,300,000
Outstanding borrowing capacity					14,100,000
Credit Agreement [Member] | Revolver [Member]
Maximum borrowing capacity					33,250,000
Credit Agreement [Member] | Facility 2 Term Loan [Member]
Outstanding borrowing capacity					$ 10,000,000
Credit Agreement [Member] | New Credit Facility (the "Credit Facility") [Member]
Maximum borrowing capacity		$ 60,000,000
Description of interest rate terms			One-month LIBOR
Commitment fees rate			0.50%
Collateral amount		$ 25,700,000	$ 30,700,000
Credit facility maturity date		Jan. 5, 2024
Financing costs			1,657,117
Interest Rate Swap Agreement[Member] | Facility 1 Term Loan [Member] | Interest Rate Swaps [Member]
Interest swap				$ 4,300,000
Fixed swap rate				1.11%
Interest Rate Swap Agreement[Member] | Facility 2 Term Loan [Member] | Interest Rate Swaps [Member]
Description of interest rate terms	Floating rate interest payments
Interest swap	$ 20,920,650
Fixed swap rate	2.261%
Interest Rate Swap Agreement[Member] | Facility 3 Term Loan [Member] | Interest Rate Swaps [Member]
Interest swap			$ 29,624,945
Fixed swap rate			2.65%
Interest Rate Swap Agreement[Member] | Facility 4 Term Loan [Member] | Interest Rate Swaps [Member]
Interest swap			$ 4,180,063
Fixed swap rate			2.97%

Members' Equity (Details)

Members' Equity (Details) - shares	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Common Stock, Number of Shares [Roll Forward]
Shares Outstanding, Beginning	23,189,229		14,921,922
Shares Issued During the Period	14,320,115		8,733,897
Shares Converted During the Period
Shares Repurchased During the Period	(505,842)		(466,590)
Shares Outstanding, Ending	37,003,502		23,189,229		14,921,922
Common Class A [Member]
Common Stock, Number of Shares [Roll Forward]
Shares Outstanding, Beginning	13,857,830	[1]	10,878,502	[2]
Shares Issued During the Period	3,279,887		3,348,253
Shares Converted During the Period
Shares Repurchased During the Period	(422,979)		(368,925)		(261,620)
Shares Outstanding, Ending	16,714,738	[3]	13,857,830	[1]	10,878,502	[2]
Common Class C [Member]
Common Stock, Number of Shares [Roll Forward]
Shares Outstanding, Beginning	1,431,999	[1]	1,041,836	[2]
Shares Issued During the Period	798,080		396,204
Shares Converted During the Period
Shares Repurchased During the Period	(7,601)		(6,041)
Shares Outstanding, Ending	2,222,478	[3]	1,431,999	[1]	1,041,836	[2]
Common Class I [Member]
Common Stock, Number of Shares [Roll Forward]
Shares Outstanding, Beginning	4,511,832	[1]	2,754,491	[2]
Shares Issued During the Period	1,757,365		1,838,656
Shares Converted During the Period
Shares Repurchased During the Period	(59,781)		(81,315)		(25,035)
Shares Outstanding, Ending	6,209,416	[3]	4,511,832	[1]	2,754,491	[2]
Common Class P-A [Member]
Common Stock, Number of Shares [Roll Forward]
Shares Outstanding, Beginning			47,774	[2]
Shares Issued During the Period	15,478		3,092
Shares Converted During the Period			(50,866)
Shares Repurchased During the Period
Shares Outstanding, Ending	15,478	[3],[4]			47,774	[2]
Common Class P-I [Member]
Common Stock, Number of Shares [Roll Forward]
Shares Outstanding, Beginning	3,387,568		199,319	[2]
Shares Issued During the Period	8,469,305		3,147,692
Shares Converted During the Period			50,866
Shares Repurchased During the Period	(15,481)		(10,309)
Shares Outstanding, Ending	11,841,392	[3]	3,387,568		199,319	[2]
[1]	The per share data for Class A, C, I and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2017, which were 12,384,101, 1,194,718, 3,529,998 and 1,792,632, respectively.
[2]	The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2016, which were 8,330,061, 690,825, 1,962,616, 30,286 and 82,013, respectively.
[3]	The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2018, which were 15,338,291, 1,803,985, 5,386,556, 11,042, and 7,266,426, respectively.
[4]	Class P-A shares were reinstated for sale as of April 16, 2018 and first sold on August 6, 2018.

Members' Equity (Details 1)

Members' Equity (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Proceeds from Shares Sold	$ 120,327,072	$ 72,419,807	$ 74,119,050
Proceeds from Shares Issued through Reinvestment of Distributions	6,126,789	4,747,534	3,290,586
Common Class A [Member]
Proceeds from Shares Sold	25,178,267	26,852,433	49,913,307
Proceeds from Shares Issued through Reinvestment of Distributions	3,815,909	3,127,873	2,347,789
Common Class C [Member]
Proceeds from Shares Sold	6,378,209	3,102,082	6,957,212
Proceeds from Shares Issued through Reinvestment of Distributions	487,570	363,670	257,384
Common Class I [Member]
Proceeds from Shares Sold	13,706,626	15,071,499	15,078,606
Proceeds from Shares Issued through Reinvestment of Distributions	1,823,310	1,255,991	685,413
Common Class P-A [Member]
Proceeds from Shares Sold	135,375	27,075	419,175
Proceeds from Shares Issued through Reinvestment of Distributions
Common Class P-I [Member]
Proceeds from Shares Sold	74,928,595	27,366,718	1,750,750
Proceeds from Shares Issued through Reinvestment of Distributions

Members' Equity (Details Narrat

Members' Equity (Details Narrative) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Total number of shares authorized		400,000,000
Common stock of class A, C, I, P-A and P-I, shares authorized		350,000,000	350,000,000
Preferred stock, shares authorized		50,000,000	50,000,000
Description of share repurchase program	Quarterly share repurchases will be conducted, on up to approximately 5% of the weighted average number of outstanding shares in any 12-month period, to allow members who hold Class A, C, I, P-A (commencing as of April 16, 2018) or P-I shares (commencing as of October 1, 2017) to sell shares back to the company at a price equal to the then current offering price less the selling commissions and dealer manager fees associated with that class of shares.
Share repurchase program repurchase limit		5.00%
Share repurchase program repurchase limit in the prior four fiscal quarters		1.25%
Share repurchased		505,842	466,590
Total purchase price		$ 4,474,471	$ 4,147,698	$ 2,637,801
Shareholder receivable		$ 469,245	$ 225,509
Distribution Reinvestment Plan [Member]
Shares allocated for use in the DRP		50,000,000	50,000,000
Shares issued under the DRP		1,703,374	1,008,948
Minimum written notice period for termination		10 days
Common Class A [Member]
Share repurchased		422,979	368,925	261,620
Total purchase price		$ 3,743,387	$ 3,280,566	$ 2,407,717
Common Class C [Member]
Share repurchased		7,601	6,041
Total purchase price		$ 65,340	$ 53,073
Common Class I [Member]
Share repurchased		59,781	81,315	25,035
Total purchase price		$ 528,898	$ 724,059	$ 230,084
Common Class P-I [Member]
Share repurchased		15,481	10,309
Total purchase price		$ 136,845	$ 90,000
Common Class P-A [Member]
Share repurchased
SC Distributors, LLC [Member] | Common Class A [Member] | Maximum [Member]
Percentage of selling commision		7.00%
Percentage of dealer manager fees		2.75%
SC Distributors, LLC [Member] | Common Class C [Member]
Description of distribution fee		With respect to Class C shares only, the company will pay the dealer manager a distribution fee that accrues daily in an amount equal to 1/365th of 0.80% of the amount of the net asset value for the Class C shares for such day on a continuous basis from year to year.
SC Distributors, LLC [Member] | Common Class C [Member] | Maximum [Member]
Percentage of selling commision		3.00%
Percentage of dealer manager fees		2.75%
SC Distributors, LLC [Member] | Common Class I [Member] | Maximum [Member]
Percentage of dealer manager fees		1.75%
SC Distributors, LLC [Member] | Common Class P-A [Member] | Maximum [Member]
Percentage of selling commision		6.00%
Percentage of dealer manager fees		2.50%
Greenbacker Capital Management LLC [Member]
Total purchase price				$ 98,786

Distributions (Details)

Distributions (Details) - $ / shares	2 Months Ended	3 Months Ended
	Dec. 31, 2018	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016
Common Class A [Member]
Cash distributions announced per unit and per day	$ 0.0016690	$ 0.0016690	$ 0.0016690	$ 0.0016690	$ 0.0016690	$ 0.0016690	$ 0.0016710	$ 0.0016807	$ 0.0016856	$ 0.0016766	$ 0.0016617	$ 0.0016551	$ 0.0016478
Common Class C [Member]
Cash distributions announced per unit and per day	0.0016265	0.0016265	0.0016265	0.0016265	0.0016265	0.0016265	0.0016273	0.0016350	0.0016402	0.0016766	0.0016617	0.0016551	0.0016478
Common Class I [Member]
Cash distributions announced per unit and per day	0.0016690	0.0016690	0.0016690	0.0016690	0.0016690	0.0016690	0.0016710	0.0016807	0.0016856	0.0016766	0.0016617	0.0016551	0.0016478
Common Class P-A [Member]
Cash distributions announced per unit and per day	0.0016479	0.0016479					0.0015952	0.0015952	0.0016036	0.0015968	0.0015826
Common Class P-I [Member]
Cash distributions announced per unit and per day	$ 0.0015828	$ 0.0015828	$ 0.0015828	$ 0.0015828	$ 0.0015828	$ 0.0015901	$ 0.0015828	$ 0.0015952	$ 0.0016036	$ 0.0015968	$ 0.0015826

Distributions (Details 1)

Distributions (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	$ 11,611,348	$ 6,656,076	$ 3,427,290
Value of Shares Issued under DRP	6,126,789	4,747,534	3,290,586
Total	17,738,137	11,403,610	6,717,876
February 1, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	728,738
Value of Shares Issued under DRP	464,821
Total	1,193,559
March 1, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	682,039
Value of Shares Issued under DRP	428,310
Total	1,110,349
April 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	790,925
Value of Shares Issued under DRP	474,370
Total	1,265,295
May 1, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	792,185
Value of Shares Issued under DRP	475,874
Total	1,268,059
June 1, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	883,662
Value of Shares Issued under DRP	507,728
Total	1,391,390
July 2, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	927,638
Value of Shares Issued under DRP	502,333
Total	1,429,971
August 1, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	1,013,883
Value of Shares Issued under DRP	529,333
Total	1,543,216
September 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	1,078,310
Value of Shares Issued under DRP	541,479
Total	1,619,789
October 2, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	1,097,313
Value of Shares Issued under DRP	529,751
Total	1,627,064
November 1, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	1,178,736
Value of Shares Issued under DRP	555,383
Total	1,734,119
December 3, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	1,177,142
Value of Shares Issued under DRP	546,446
Total	1,723,588
January 2, 2019 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	1,260,777
Value of Shares Issued under DRP	570,961
Total	$ 1,831,738
February 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		431,686
Value of Shares Issued under DRP		349,842
Total		781,528
March 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		413,270
Value of Shares Issued under DRP		332,761
Total		746,031
April 2, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		482,113
Value of Shares Issued under DRP		371,902
Total		854,015
May 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		486,864
Value of Shares Issued under DRP		370,463
Total		857,327
June 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		524,909
Value of Shares Issued under DRP		383,585
Total		908,494
July 3, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		534,165
Value of Shares Issued under DRP		382,339
Total		916,504
August 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		572,833
Value of Shares Issued under DRP		406,993
Total		979,826
September 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		600,962
Value of Shares Issued under DRP		415,864
Total		1,016,826
October 2, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		603,869
Value of Shares Issued under DRP		411,848
Total		1,015,717
November 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		637,604
Value of Shares Issued under DRP		436,753
Total		1,074,357
December 1, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		656,495
Value of Shares Issued under DRP		430,860
Total		1,087,355
January 2, 2018 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		711,306
Value of Shares Issued under DRP		454,324
Total		$ 1,165,630
February 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			171,410
Value of Shares Issued under DRP			185,680
Total			357,090
March 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			182,825
Value of Shares Issued under DRP			195,193
Total			378,018
April 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			221,088
Value of Shares Issued under DRP			221,729
Total			442,817
May 2, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			234,799
Value of Shares Issued under DRP			241,934
Total			476,733
June 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			261,003
Value of Shares Issued under DRP			271,362
Total			532,365
July 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			270,112
Value of Shares Issued under DRP			277,033
Total			547,145
August 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			296,391
Value of Shares Issued under DRP			288,859
Total			585,250
September 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			323,445
Value of Shares Issued under DRP			299,790
Total			623,235
October 3, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			334,152
Value of Shares Issued under DRP			299,699
Total			633,851
November 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			356,589
Value of Shares Issued under DRP			321,863
Total			678,452
December 1, 2016 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			371,493
Value of Shares Issued under DRP			320,165
Total			691,658
January 3, 2017 [Member]
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			403,983
Value of Shares Issued under DRP			367,279
Total			$ 771,262

Distributions (Details 2)

Distributions (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Distributions Made to Members or Limited Partners [Abstract]
Cash from operations	$ 11,611,348	$ 6,656,075	$ 3,180,297
Offering proceeds
Total Cash Distributions	$ 11,611,348	$ 6,656,075	$ 3,180,297

Distributions (Details Narrativ

Distributions (Details Narrative)	Dec. 31, 2018USD ($)
Distributions Made to Members or Limited Partners [Abstract]
Fund distributions	$ 250,000,000
Portfolio leveraged (in percent)	33.00%

Income Taxes (Details)

Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current
US federal
State and local
Foreign jurisdiction
Current tax (benefit)/expense
Change in valuation allowance
Current tax (benefit)/expense, net
Deferred
US federal	(1,218,349)	1,289,202	(2,916,807)
State and local	(254,810)	273,787	(360,921)
Foreign jurisdiction
Deferred tax (benefit)/expense	(1,473,159)	1,562,989	(3,277,728)
Change in valuation allowance	(54,758)	92,366	(2,251,666)
Deferred tax (benefit)/expense, net	(1,527,917)	1,655,355	(5,529,394)
Total
US federal	(1,218,349)	1,289,202	(2,916,807)
State and local	(254,810)	273,787	(360,921)
Foreign jurisdiction
Tax (benefit)/expense	(1,473,159)	1,562,989	(3,277,728)
Change in valuation allowance	(54,758)	92,366	(2,251,666)
Tax (benefit)/expense, net	$ (1,527,917)	$ 1,655,355	$ (5,529,394)

Income Taxes (Details 1)

Income Taxes (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Net increase (decrease) in net assets from operations before tax, based on ASC 946, at the federal income tax rate	$ 2,523,711	$ 2,793,488	$ 869,681
Reversal of Greenbacker Renewable Energy, LLC's (income)/loss treated as a partnership for U.S tax purposes, at federal income tax rate	283,062	337,284	42,047
Adjustment for Greenbacker Renewable Energy Corporation's consolidated book income/(loss), based on standard GAAP accounting, at federal income tax rate	(3,769,926)	(2,225,352)	(2,066,516)
Federal tax credit	(255,196)		(1,762,020)
State tax credit			(229,419)
Increase in income taxes resulting from:
State and local taxes, net of federal benefit	(270,036)	261,224	(132,613)
Change in state rate	15,226	12,562	1,112
Change in federal rate		383,783
Permanent differences, at federal income tax rate
Change in valuation allowance	(54,758)	92,366	(2,251,666)
Actual provision for income taxes	$ (1,527,917)	$ 1,655,355	$ (5,529,394)
Net increase (decrease) in net assets from operations before tax, based on ASC 946, at the federal income tax rate	(165.17%)	168.75%	(15.73%)
Reversal of Greenbacker Renewable Energy, LLC's (income)/loss treated as a partnership for U.S tax purposes, at federal income tax rate	(18.53%)	20.38%	(0.76%)
Adjustment for Greenbacker Renewable Energy Corporation's consolidated book income/(loss), based on standard GAAP accounting, at federal income tax rate	246.74%	(134.43%)	37.37%
Federal tax credit	16.70%		31.87%
State tax credit			4.15%
Increase in income taxes resulting from:
State and local taxes, net of federal benefit	17.67%	15.78%	2.40%
Change in state rate	(1.00%)	0.76%	(0.02%)
Change in federal rate		23.18%
Permanent differences, at federal income tax rate
Change in valuation allowances	3.59%	5.58%	40.72%
Actual provision for income taxes	100.00%	100.00%	100.00%

Income Taxes (Details 2)

Income Taxes (Details 2) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Amortization	$ 60,181	$ 63,480
Net operating losses	21,289,433	12,669,763
Federal tax credits	5,756,076	5,493,745
Unrealized gains	(20,786,706)	(13,381,165)
Deferred tax assets	6,318,984	4,845,823
Less: valuation allowance	(267,027)	(321,785)
Deferred tax assets, net	$ 6,051,957	$ 4,524,038

Income Taxes (Details 3)

Income Taxes (Details 3)	Dec. 31, 2018USD ($)
2020 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount	802,822
State NOL Amount
2021 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount	422,885
State NOL Amount
2022 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	918,368
2023 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	2,454,562
2024 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	2,549,437
2025 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	673,181
2026 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	2,934,175
2027 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	4,162,481
2028 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount
2029 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount
2030 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	2,751,775
2031 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	5,377,684
2032 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount	6,870,978
2033 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount
State ITC Amount
State NOL Amount
2034 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount	161,963
Federal ITC Amount
State ITC Amount
State NOL Amount	156,188
2035 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount	6,693,198
Federal ITC Amount	3,345,092
State ITC Amount
State NOL Amount	2,718,197
2036 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount	15,734,069
Federal ITC Amount	1,955,780
State ITC Amount
State NOL Amount	5,911,423
2037 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount	26,927,165
Federal ITC Amount
State ITC Amount
State NOL Amount	14,329,300
2038 [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount
Federal ITC Amount	255,196
State ITC Amount
State NOL Amount
Indefinite [Member]
Operating Loss Carryforwards [Line Items]
Federal NOL Amount	29,662,690
Federal ITC Amount
State ITC Amount
State NOL Amount

Income Taxes (Details Narrative

Income Taxes (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Deferred tax assets valuation allowance	$ 267,027	$ 321,785
Corporate tax rate	35.00%
Revised federal income tax rate	21.00%
Percentage of adjusted taxable income	30.00%
Percentage of investments in depreciable property	100.00%
Percentage of post 2017 net operating losses on taxable income	80.00%

Commitments and Contingencies (

Commitments and Contingencies (Details Narrative)	Dec. 31, 2018USD ($)
Renewable Energy Credit [Member]
Other Commitments [Line Items]
Term loans	$ 185,950
GREC Holdco [Member]
Other Commitments [Line Items]
Term loans	$ 81,989,766

Financial Highlights (Details)

Financial Highlights (Details) - USD ($)	2 Months Ended		3 Months Ended																										12 Months Ended
	Jun. 30, 2014	[1],[2]	Dec. 31, 2018		Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018		Dec. 31, 2017		Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017		Dec. 31, 2016		Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016		Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	[1]	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Per share data attributed to common shares:
Net investment income (in dollars per share)	$ (0.19)		$ (0.01)		$ 0.06	$ 0.12	$ 0.13		$ (0.01)		$ 0.06	$ 0.11	$ 0.09		$ 0.11		$ 0.14	$ 0.15	$ 0		$ 0.09		$ 0.07	$ 0.14	$ (0.08)	$ (0.13)	$ (0.10)		$ 0.27		$ 0.25		$ 0.43
Common shareholders' equity at end of period			$ 318,259,611						$ 201,438,524																				$ 318,259,611		$ 201,438,524
Common shares outstanding at end of period			37,003,502						23,189,229						14,921,922														37,003,502		23,189,229		14,921,922
Common Class A [Member]
Per share data attributed to common shares:
Net Asset Value at beginning of period							8.68	[3]					8.69	[4]					8.54	[5]									$ 8.68	[3]	$ 8.69	[4]	$ 8.54	[5]
Net investment income (in dollars per share)																													0.28	[3],[6]	0.25	[4],[7]	0.43	[5],[7]
Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder																													0.12	[3]	0.35	[4]	(0.10)	[5]
Change in translation of assets and liabilities denominated in foreign currencies																														[3],[6]	0.01	[4]		[5]
Change in benefit from deferred taxes on unrealized depreciation (appreciation) on investments																													0.08	[3]	0.05	[4]	0.40	[5]
Net increase in net assets attributed to common equityholders																													0.48	[3]	0.66	[4]	0.73	[5]
Shareholder distributions:Distributions from net investment income																													(0.33)	[4]	(0.39)	[4]	(0.33)	[5]
Distributions from offering proceeds																													(0.28)	[4]	(0.22)	[4]	(0.27)	[5]
Offering costs and deferred sales commissions																													(0.03)	[3]	(0.04)	[4]		[5]
Other																													0.02	[3],[6]	(0.02)	[4],[8]	0.02	[5],[9]
Net increase (decrease) in members' equity attributed to common shares																													(0.62)	[3]	(0.01)	[4]	0.15	[5]
Net asset value for common shares at end of period			$ 8.54	[3]					$ 8.68	[3]					$ 8.69	[4]					8.54	[5]							$ 8.54	[3]	$ 8.68	[3]	$ 8.69	[4]
Common shareholders' equity at end of period			$ 142,791,899	[3]					$ 120,344,517	[4]					$ 94,541,760	[5]													$ 142,791,899	[3]	$ 120,344,517	[4]	$ 94,541,760	[5]
Common shares outstanding at end of period			16,714,738	[3]					13,857,830	[4]					10,878,502	[5]													16,714,738	[3]	13,857,830	[4]	10,878,502	[5]
Ratio/Supplemental data for common shares (annualized):
Total return, net of expense reimbursement to/from advisor, attributed to common shares based on net asset value																													5.45%		6.90%		8.79%
Ratio of net investment income, net of expense reimbursement to/from advisor, to average net assets																													3.24%		2.96%		4.95%
Ratio of operating expenses, net of expense reimbursement to/from advisor, to average net assets																													3.87%		3.64%		4.65%
Total return, excluding expense reimbursement to/from advisor, attributed to common shares based on net asset value																																	9.34%
Ratio of net investment income, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	5.61%
Ratio of operating expenses, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	3.99%
Portfolio turnover rate																													0.05%		19.15%		0.43%
Common Class C [Member]
Per share data attributed to common shares:
Net Asset Value at beginning of period							8.42	[3]					8.44	[4]					8.54	[5]									$ 8.42	[3]	$ 8.44	[4]	$ 8.54	[5]
Net investment income (in dollars per share)																													0.28	[3],[6]	0.25	[4],[7]	0.43	[5],[7]
Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder																													0.12	[3]	0.35	[4]	(0.10)	[5]
Change in translation of assets and liabilities denominated in foreign currencies																														[3],[6]	0.01	[4]		[5]
Change in benefit from deferred taxes on unrealized depreciation (appreciation) on investments																													0.08	[3]	0.05	[4]	0.40	[5]
Net increase in net assets attributed to common equityholders																													0.48	[3]	0.66	[4]	0.73	[5]
Shareholder distributions:Distributions from net investment income																													(0.33)	[4]	(0.39)	[4]	(0.33)	[5]
Distributions from offering proceeds																													(0.26)	[4]	(0.22)	[4]	(0.27)	[5]
Offering costs and deferred sales commissions																													(0.08)	[3]	(0.15)	[4]	(0.22)	[5]
Other																													0.11	[4],[6]	0.08	[4],[8]	(0.01)	[5],[9]
Net increase (decrease) in members' equity attributed to common shares																													(0.56)	[4]	(0.02)	[4]	(0.10)	[5]
Net asset value for common shares at end of period			$ 8.34	[4]					$ 8.42	[3]					$ 8.44	[4]					8.54	[5]							$ 8.34	[4]	$ 8.42	[3]	$ 8.44	[4]
Common shareholders' equity at end of period			$ 18,546,310	[3]					$ 12,053,349	[4]					$ 8,796,002	[5]													$ 18,546,310	[3]	$ 12,053,349	[4]	$ 8,796,002	[5]
Common shares outstanding at end of period			2,222,478	[3]					1,431,999	[4]					1,041,836	[5]													2,222,478	[3]	1,431,999	[4]	1,041,836	[5]
Ratio/Supplemental data for common shares (annualized):
Total return, net of expense reimbursement to/from advisor, attributed to common shares based on net asset value																													6.19%		6.77%		5.65%
Ratio of net investment income, net of expense reimbursement to/from advisor, to average net assets																													3.26%		3.04%		4.98%
Ratio of operating expenses, net of expense reimbursement to/from advisor, to average net assets																													3.95%		3.74%		4.68%
Total return, excluding expense reimbursement to/from advisor, attributed to common shares based on net asset value																																	6.13%
Ratio of net investment income, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	5.65%
Ratio of operating expenses, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	4.02%
Portfolio turnover rate																													0.05%		19.15%		0.43%
Common Class I [Member]
Per share data attributed to common shares:
Net Asset Value at beginning of period							8.68	[3]					8.69	[4]					8.54	[5]									$ 8.68	[3]	$ 8.69	[4]	$ 8.54	[5]
Net investment income (in dollars per share)																													0.28	[3],[6]	0.25	[4],[7]	0.43	[5],[7]
Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder																													0.12	[3]	0.35	[4]	(0.10)	[5]
Change in translation of assets and liabilities denominated in foreign currencies																														[3],[6]	0.01	[4]		[5]
Change in benefit from deferred taxes on unrealized depreciation (appreciation) on investments																													0.08	[3]	0.05	[4]	0.40	[5]
Net increase in net assets attributed to common equityholders																													0.48	[3]	0.66	[4]	0.73	[5]
Shareholder distributions:Distributions from net investment income																													(0.33)	[4]	(0.39)	[4]	(0.33)	[5]
Distributions from offering proceeds																													(0.28)	[4]	(0.21)	[4]	(0.27)	[5]
Offering costs and deferred sales commissions																													(0.04)	[3]	(0.08)	[4]		[5]
Other																													0.03	[3],[6]	0.01	[4],[8]	0.02	[5],[9]
Net increase (decrease) in members' equity attributed to common shares																													(0.62)	[3]	(0.01)	[4]	0.15	[5]
Net asset value for common shares at end of period			$ 8.54	[3]					$ 8.68	[3]					$ 8.69	[4]					8.54	[5]							$ 8.54	[3]	$ 8.68	[3]	$ 8.69	[4]
Common shareholders' equity at end of period			$ 53,046,260	[3]					$ 39,181,769	[4]					$ 23,938,449	[5]													$ 53,046,260	[3]	$ 39,181,769	[4]	$ 23,938,449	[5]
Common shares outstanding at end of period			6,209,416	[3]					4,511,832	[4]					2,754,491	[5]													6,209,416	[3]	4,511,832	[4]	2,754,491	[5]
Ratio/Supplemental data for common shares (annualized):
Total return, net of expense reimbursement to/from advisor, attributed to common shares based on net asset value																													5.44%		6.90%		8.79%
Ratio of net investment income, net of expense reimbursement to/from advisor, to average net assets																													3.20%		2.96%		4.93%
Ratio of operating expenses, net of expense reimbursement to/from advisor, to average net assets																													3.86%		3.64%		4.63%
Total return, excluding expense reimbursement to/from advisor, attributed to common shares based on net asset value																																	9.31%
Ratio of net investment income, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	5.58%
Ratio of operating expenses, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	3.97%
Portfolio turnover rate																													0.05%		19.15%		0.43%
Common Class P-A [Member]
Per share data attributed to common shares:
Net Asset Value at beginning of period							8.75	[3],[10]					8.67						8.54	[5]									$ 8.75	[3],[10]	$ 8.67		$ 8.54	[5]
Net investment income (in dollars per share)																													0.07	[3],[10]			0.19	[5],[7]
Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder																													(0.05)	[3],[10]			(0.05)	[5]
Change in translation of assets and liabilities denominated in foreign currencies																														[3],[10]				[5]
Change in benefit from deferred taxes on unrealized depreciation (appreciation) on investments																													0.12	[3],[10]			0.18	[5]
Net increase in net assets attributed to common equityholders																													0.14	[3],[10]			0.32	[5]
Shareholder distributions:Distributions from net investment income																													(0.08)	[3],[10]			(0.15)	[5]
Distributions from offering proceeds																													(0.14)	[3],[10]			(0.11)	[5]
Offering costs and deferred sales commissions																													(0.14)	[3],[10]				[5]
Other																													0.02	[3],[10]			0.07	[5],[9]
Net increase (decrease) in members' equity attributed to common shares																													(0.34)	[3],[10]			0.13	[5]
Net asset value for common shares at end of period			$ 8.55	[3],[10]					$ 8.75	[3],[10]					$ 8.67						8.54	[5]							$ 8.55	[3],[10]	$ 8.75	[3],[10]	$ 8.67
Common shareholders' equity at end of period			$ 132,272	[3],[11]											$ 414,145	[5]													$ 132,272	[3],[11]			$ 414,145	[5]
Common shares outstanding at end of period			15,478	[3],[10]											47,774	[5]													15,478	[3],[10]			47,774	[5]
Ratio/Supplemental data for common shares (annualized):
Total return, net of expense reimbursement to/from advisor, attributed to common shares based on net asset value																													0.43%	[3],[10]			4.59%
Ratio of net investment income, net of expense reimbursement to/from advisor, to average net assets																													1.97%	[4],[10]			4.81%
Ratio of operating expenses, net of expense reimbursement to/from advisor, to average net assets																													3.48%	[4],[10]			4.53%
Total return, excluding expense reimbursement to/from advisor, attributed to common shares based on net asset value																																	5.03%
Ratio of net investment income, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	5.45%
Ratio of operating expenses, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	3.88%
Portfolio turnover rate																													0.05%	[10]			0.43%
Common Class P-I [Member]
Per share data attributed to common shares:
Net Asset Value at beginning of period							$ 8.81	[3]					$ 8.67	[4]					$ 8.54	[5]									$ 8.81	[3]	$ 8.67	[4]	$ 8.54	[5]
Net investment income (in dollars per share)																													0.28	[3],[6]	0.25	[4],[7]	0.19	[5],[7]
Net realized and unrealized gain/(loss) on investments, net of incentive allocation to special unitholder																													0.12	[3]	0.35	[4]	(0.05)	[5]
Change in translation of assets and liabilities denominated in foreign currencies																														[3],[6]	0.01	[4]		[5]
Change in benefit from deferred taxes on unrealized depreciation (appreciation) on investments																													0.08	[3]	0.05	[4]	0.17	[5]
Net increase in net assets attributed to common equityholders																													0.48	[3]	0.66	[4]	0.31	[5]
Shareholder distributions:Distributions from net investment income																													(0.30)	[4]	(0.39)	[4]	(0.14)	[5]
Distributions from offering proceeds																													(0.28)	[4]	(0.19)	[4]	(0.11)	[5]
Offering costs and deferred sales commissions																														[3]		[4]		[5]
Other																													0.05	[3],[6]	0.06	[4],[8]	0.07	[5],[9]
Net increase (decrease) in members' equity attributed to common shares																													(0.53)	[3]	0.14	[4]	0.13	[5]
Net asset value for common shares at end of period			$ 8.76	[3]					$ 8.81	[3]					$ 8.67	[4]					$ 8.54	[5]							$ 8.76	[3]	$ 8.81	[3]	$ 8.67	[4]
Common shareholders' equity at end of period			$ 103,742,870	[3]					$ 29,858,889	[4]					$ 1,727,858	[5]													$ 103,742,870	[3]	$ 29,858,889	[4]	$ 1,727,858	[5]
Common shares outstanding at end of period			11,841,392	[3]					3,387,568						199,319	[5]													11,841,392	[3]	3,387,568		199,319	[5]
Ratio/Supplemental data for common shares (annualized):
Total return, net of expense reimbursement to/from advisor, attributed to common shares based on net asset value																													6.16%		8.65%		4.49%
Ratio of net investment income, net of expense reimbursement to/from advisor, to average net assets																													2.86%		2.92%		4.48%
Ratio of operating expenses, net of expense reimbursement to/from advisor, to average net assets																													3.69%		3.59%		4.21%
Total return, excluding expense reimbursement to/from advisor, attributed to common shares based on net asset value																																	4.78%
Ratio of net investment income, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	5.08%
Ratio of operating expenses, excluding expense reimbursement to/from advisor, to average net assets (4)(5)																																	3.61%
Portfolio turnover rate																													0.05%		19.15%		0.43%
[1]	As the company had no substantive operations prior to April 25, 2014, the first quarter of 2014 has been omitted.
[2]	The selected financial information for the June 30, 2014 quarter consists of the company's commencement of operations (April 25, 2014 through June 30, 2014).
[3]	The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2018, which were 15,338,291, 1,803,985, 5,386,556, 11,042, and 7,266,426, respectively.
[4]	The per share data for Class A, C, I and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2017, which were 12,384,101, 1,194,718, 3,529,998 and 1,792,632, respectively.
[5]	The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2016, which were 8,330,061, 690,825, 1,962,616, 30,286 and 82,013, respectively.
[6]	Amount is less than $0.01 per share.
[7]	Does not reflect any incentive fees that may be payable to the Special Unitholder.
[8]	Represents the impact of different share amounts used in calculating certain per share data based on weighted average shares outstanding during the period and the impact of shares at a price other than the net asset value.
[9]	Represents the impact of different share amounts used in calculating certain per share data based on weighted average shares outstanding during the period and organizational costs, which are not included in operating expenses nor subject to the expense reimbursement agreement, and the impact of shares at a price other than the net asset value.
[10]	Class P-A shares were reinstated for sale as of April 16, 2018 and first sold on August 6, 2018.
[11]	Class P-A shares were reinstated for sale as of April 16, 2018.

Financial Highlights (Details N

Financial Highlights (Details Narrative) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Weighted average common shares outstanding	29,799,735	18,922,343	11,043,156
Common Class A [Member]
Weighted average common shares outstanding	15,338,291	12,384,101	8,330,061
Common Class C [Member]
Weighted average common shares outstanding	1,803,985	1,194,718	690,825
Common Class I [Member]
Weighted average common shares outstanding	5,386,556	3,529,998	1,962,616
Common Class P-A [Member]
Weighted average common shares outstanding	11,042		30,286
Common Class P-I [Member]
Weighted average common shares outstanding	7,266,426	1,792,632	82,013

Selected Quarterly Data - Una_3

Selected Quarterly Data - Unaudited (Details) - USD ($)	2 Months Ended		3 Months Ended																			12 Months Ended
	Jun. 30, 2014	[1],[2]	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	[1]	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Total investment income	$ 80		$ 4,540,427	$ 5,103,336	$ 4,984,874	$ 4,918,793	$ 4,416,117	$ 3,663,635	$ 2,936,470	$ 2,366,899	$ 2,848,655	$ 3,085,513	$ 1,645,291	$ 656,566	$ 421,488	$ 740,773	$ 633,646	$ 58,215	$ 37,907	$ 304		$ 19,547,430		$ 13,383,121		$ 8,236,025
Net investment income (loss)	(53,464)		(434,963)	1,988,378	3,259,425	3,271,370	229,297	1,149,977	1,986,899	1,450,378	1,497,148	1,730,438	1,519,649	23,132	253,576	270,523	333,917	(118,483)	(106,838)	(35,547)		8,084,210		4,816,551		4,679,670
Net gain (loss) on investments and foreign currency translation			(1,693,642)	(296,054)	2,341,771	2,452,402	3,738,403	1,579,619	1,576,272	(108,245)	(1,706,876)	1,143,849	(231,426)	(634,047)	666,498	376,473	(46,396)	385,490	(32,636)	81,865
Change in benefit (expense) from deferred taxes on unrealized appreciation on investments			1,877,386	2,275,076	73,354	(1,239,228)	1,198,186	680,969	(653,366)	(262,069)	671,401	(8,372)	1,838,292	1,885,335	127,015							2,986,588		963,720		4,386,656
Net increase (decrease) in net assets resulting from operations	$ (53,464)		$ (251,219)	$ 3,967,400	$ 5,674,550	$ 4,484,544	$ 5,165,886	$ 3,410,565	$ 2,909,805	$ 1,080,064	$ 461,673	$ 2,865,915	$ 3,126,515	$ 1,274,420	$ 1,047,089	$ 646,996	$ 287,521	$ 267,007	$ (139,474)	$ 46,318		$ 13,875,275		$ 12,566,320		$ 7,728,523
Net investment income (loss) per share - basic and diluted (in dollars per share)	$ (0.19)		$ (0.01)	$ 0.06	$ 0.12	$ 0.13	$ (0.01)	$ 0.06	$ 0.11	$ 0.09	$ 0.11	$ 0.14	$ 0.15	$ 0	$ 0.09	$ 0.07	$ 0.14	$ (0.08)	$ (0.13)	$ (0.10)		$ 0.27		$ 0.25		$ 0.43
Net increase (decrease) in net assets resulting from operations per share - basic and diluted (in dollars per share)	(0.19)		(0.01)	0.12	0.21	0.19	0.22	0.16	0.15	0.07	0.03	0.24	0.3	0.16	0.20	0.17	0.12	0.18	(0.16)	0.09
Net asset value per share at period end (in dollars per share)	$ 8.50														$ 8.54	$ 8.52	$ 8.50	$ 8.50	$ 8.50	$ 8.50
Common Class A [Member]
Net investment income (loss) per share - basic and diluted (in dollars per share)																						0.28	[3],[4]	0.25	[5],[6]	0.43	[5],[7]
Net asset value per share at period end (in dollars per share)			8.54	8.69	8.72	8.70	8.68	8.64	8.63	8.64	8.69	8.74	8.69	8.56								8.54		8.68		8.69
Common Class C [Member]
Net investment income (loss) per share - basic and diluted (in dollars per share)																						0.28	[3],[4]	0.25	[5],[6]	0.43	[5],[7]
Net asset value per share at period end (in dollars per share)			8.34	8.48	8.50	8.45	8.42	8.42	8.41	8.40	8.44	8.49	8.43	8.56								8.34		8.42		8.44
Common Class I [Member]
Net investment income (loss) per share - basic and diluted (in dollars per share)																						0.28	[3],[4]	0.25	[5],[6]	0.43	[5],[7]
Net asset value per share at period end (in dollars per share)			8.54	8.69	8.72	8.70	8.68	8.64	8.63	8.64	8.69	8.74	8.69	8.56								8.54		8.68		8.69
Common Class P-A [Member]
Net investment income (loss) per share - basic and diluted (in dollars per share)																						0.07	[4],[8]			0.19	[5],[7]
Net asset value per share at period end (in dollars per share)			8.55	8.71							8.67	8.74										8.55				8.67
Common Class P-I [Member]
Net investment income (loss) per share - basic and diluted (in dollars per share)																						0.28	[3],[4]	0.25	[5],[6]	0.19	[5],[7]
Net asset value per share at period end (in dollars per share)			$ 8.76	$ 8.89	$ 8.9	$ 8.84	$ 8.81	$ 8.75	$ 8.73	$ 8.69	$ 8.67	$ 8.74										$ 8.76		$ 8.81		$ 8.67
[1]	As the company had no substantive operations prior to April 25, 2014, the first quarter of 2014 has been omitted.
[2]	The selected financial information for the June 30, 2014 quarter consists of the company's commencement of operations (April 25, 2014 through June 30, 2014).
[3]	Amount is less than $0.01 per share.
[4]	The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2018, which were 15,338,291, 1,803,985, 5,386,556, 11,042, and 7,266,426, respectively.
[5]	Does not reflect any incentive fees that may be payable to the Special Unitholder.
[6]	The per share data for Class A, C, I and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2017, which were 12,384,101, 1,194,718, 3,529,998 and 1,792,632, respectively.
[7]	The per share data for Class A, C, I, P-A and P-I Shares were derived by using the weighted average shares outstanding during the year ended December 31, 2016, which were 8,330,061, 690,825, 1,962,616, 30,286 and 82,013, respectively.
[8]	Class P-A shares were reinstated for sale as of April 16, 2018 and first sold on August 6, 2018.