Greenbacker Renewable Energy 10-K 30 Mar 22 2021 FY Annual report Financial data

Cover

Cover - shares	12 Months Ended
	Dec. 31, 2021	Mar. 17, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	000-55610
Entity Registrant Name	GREENBACKER RENEWABLE ENERGY COMPANY LLC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	80-0872648
Entity Address, Address Line One	230 Park Avenue
Entity Address, Address Line Two	Suite 1560
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10169
City Area Code	646
Local Phone Number	720-9463
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	true
Entity Small Business	false
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		177,680,543
Entity Central Index Key	0001563922
Amendment Flag	false
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Audit Information [Abstract]
Auditor Name	KPMG LLP
Auditor Location	New York, NY
Auditor Firm ID	185

CONSOLIDATED STATEMENTS OF ASSE

CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES - USD ($)		Dec. 31, 2021		Dec. 31, 2020
ASSETS
Investments at Fair Value		$ 1,435,742,001		$ 659,982,724
Cash and cash equivalents		92,179,779		4,675,836
Restricted cash		29,683,613		0
Shareholder contribution receivable		2,052,750		6,418,454
Dividend receivable		10,481,202		7,181,629
Investment sales receivable		69,994		4,759,184
Return of capital receivable		654,622		2,159,762
Other assets	[1]	11,695,159		3,198,872
Total assets		1,582,559,120		688,376,461
LIABILITIES
Swap contracts, at fair value		7,501,983		9,750,909
Deferred tax liabilities, net of allowance		26,707,096		17,868,138
Payable for investments purchased		1,037,461		4,451,570
Term note payable, net of financing costs		79,413,622		86,501,654
Management fee payable		2,271,687		1,055,600
Performance participation fee payable		3,359,269		3,540,052
Accounts payable and accrued expenses		2,298,343		590,404
Due to Advisor		607,610		1,751
Shareholder distributions payable		7,930,813		2,984,521
Payable for repurchases of common stock		7,493,978		5,948,128
Deferred sales commission payable		4,626,626		131,875
Total liabilities		143,248,488		132,824,602
Commitments and contingencies (Note 10. Commitments and Contingencies)
MEMBERS’ EQUITY (NET ASSETS)
Preferred stock, par value, $.001 per share, 50,000,000 authorized; none issued and outstanding		0		0
Common stock, par value, $.001 per share, 350,000,000 authorized; 165,387,519 and 62,870,347 shares issued and outstanding, respectively		165,388		62,870
Paid-in capital in excess of par value		1,468,107,899		550,896,111
Accumulated (losses) gains	[2]	(28,962,655)		4,592,878
Total common members’ equity		1,439,310,632		555,551,859
Special unitholder’s equity		0		0
Total members’ equity (net assets)		1,439,310,632		555,551,859
Total liabilities and equity		1,582,559,120		688,376,461
Net assets		1,439,310,632	[3]	555,551,859	[4]
Investments in controlled/affiliated portfolios
ASSETS
Investments at Fair Value		1,335,063,419		611,482,307
Investments in non-controlled/non-affiliated portfolios
ASSETS
Investments at Fair Value		33,286,139		37,327,690
Investments in Money Market Funds
ASSETS
Investments at Fair Value		67,392,443		11,172,727
Class A Shares
MEMBERS’ EQUITY (NET ASSETS)
Net assets		137,994,947		144,978,110
Class C shares
MEMBERS’ EQUITY (NET ASSETS)
Net assets		22,290,310		22,836,128
Class I Shares
MEMBERS’ EQUITY (NET ASSETS)
Net assets		53,665,823		56,156,327
Class P-A shares
MEMBERS’ EQUITY (NET ASSETS)
Net assets		6,721,670		480,799
Class P-D Shares
MEMBERS’ EQUITY (NET ASSETS)
Net assets		1,747,603		0
Class P-I Shares
MEMBERS’ EQUITY (NET ASSETS)
Net assets		810,046,418		331,100,495
Class P-S Shares
MEMBERS’ EQUITY (NET ASSETS)
Net assets		404,803,246		0
Class P-T Shares
MEMBERS’ EQUITY (NET ASSETS)
Net assets		$ 2,040,615		$ 0
[1]	As of December 31, 2021, Other assets includes $5,000,000 of cash collateral associated with a derivative instrument.
[2]	Accumulated deficit, accumulated net realized gain on investments, and accumulated unrealized appreciation on investments, net of deferred taxes, foreign currency translation, and swap contracts are included in accumulated gains (losses).
[3]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within this Consolidated Schedules of Investments.
[4]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within the Consolidated Schedules of Investments.

CONSOLIDATED STATEMENTS OF AS_2

CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES (Parenthetical) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Investments at Cost	$ 1,292,072,217	$ 572,347,137
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	350,000,000	350,000,000
Common stock, shares, issued (in shares)	165,387,519	165,387,519
Common stock, shares, outstanding (in shares)	62,870,347	62,870,347
Cash collateral associated with derivative instrument included in other assets	$ 5,000,000
Class A Shares
Common stock, shares, outstanding (in shares)	16,580,558	16,844,129
Class C shares
Common stock, shares, outstanding (in shares)	2,741,963	2,734,661
Class I Shares
Common stock, shares, outstanding (in shares)	6,449,493	6,526,001
Class P-A Shares
Common stock, shares, outstanding (in shares)	783,593	55,264
Class P-D Shares
Common stock, shares, outstanding (in shares)	198,548	0
Class P-I Shares
Common stock, shares, outstanding (in shares)	92,069,013	36,710,292
Class P-S shares
Common stock, shares, outstanding (in shares)	46,324,757	0
Class P-T shares
Common stock, shares, outstanding (in shares)	239,594	0
Investments in Money Market Funds
Investments at Cost	$ 67,392,443	$ 11,172,727
Investments in controlled/affiliated portfolios
Investments at Cost	1,191,393,635	523,846,720
Investments in non-controlled/non-affiliated portfolios
Investments at Cost	$ 33,286,139	$ 37,327,690

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investment income from controlled, affiliated investments:
Dividend income		$ 28,631,462	$ 21,495,843	$ 17,160,351
Interest income		0	4,579	13,060
Total investment income from controlled, affiliated investments		28,631,462	21,500,422	17,173,411
Investment income from non-controlled, non-affiliated investments:
Interest income		3,919,675	2,929,480	1,589,294
Total investment income		32,551,137	24,429,902	18,762,705
Operating expenses:
Management fee expense		21,940,099	10,364,635	8,461,616
Audit and tax expense		1,812,189	1,534,984	1,156,874
Interest and financing expenses		2,988,749	3,019,833	2,812,802
General and administration expenses		658,439	335,912	239,202
Performance participation fee		4,672,078	4,571,927	0
Legal expenses		535,759	560,684	351,128
Directors fees and expenses		432,860	387,249	398,845
Insurance expense		295,958	159,237	161,610
Transfer agent expense		701,321	529,124	477,198
Other expenses	[1]	4,747,308	2,068,063	489,627
Operating expenses before performance participation fee waiver		38,784,760	23,531,648	14,548,902
Performance participation fee waiver		0	(747,602)	0
Total operating expenses, net of performance participation fee waiver		38,784,760	22,784,046	14,548,902
Net investment income before taxes		(6,233,623)	1,645,856	4,213,803
(Benefit from) income taxes		(9,050,004)	(7,161,831)	(3,188,431)
Franchise tax expense		160,572	0	125,143
Net investment income		2,655,809	8,807,687	7,277,091
Net change in realized and unrealized gain (loss) on investments, foreign currency translation and deferred tax assets:
Net realized gain (loss) on investments		(29,182)	7,830,550	12,915,738
Net change in unrealized appreciation (depreciation) on:
Investments		56,023,470	51,377,370	27,296,880
Foreign currency translation		10,727	92,019	7,589
Swap contracts		2,248,926	(4,872,567)	(5,002,305)
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts		(17,888,961)	(18,529,344)	(10,461,973)
Net increase in net assets resulting from operations		43,020,789	44,705,715	32,033,020
Net decrease in net assets attributed to special unitholder		0	(1,154,308)	(5,270,670)
Net increase in net assets attributed to common members		$ 43,020,789	$ 43,551,407	$ 26,762,350
Common stock per share information —basic and diluted:
Net investment income, basic (in dollars per share)		$ 0.02	$ 0.16	$ 0.17
Net investment income, diluted (in dollars per share)		0.02	0.16	0.17
Net increase in net assets attributed to common members (in dollars per share)		$ 0.34	$ 0.81	$ 0.61
Weighted average common shares outstanding, basic (in shares)		126,458,860	54,057,620	43,788,187
Weighted average common shares outstanding, diluted (in shares)		126,458,860	54,057,620	43,788,187
[1]	For the years ended December 31, 2021, 2020 and 2019, Other expenses includes $2,024,070, $1,702,655, and $229,731 of net realized losses on swap contracts, respectively.

CONSOLIDATED STATEMENTS OF OP_2

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Expense
Net realized gains (losses) on swap contracts	$ (2,024,070)	$ (1,702,655)	$ (229,731)

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	62,870,347	47,889,610
Beginning balance	$ 555,551,859	$ 415,637,460	$ 314,777,709
Proceeds from issuance of common stock, net (in shares)	103,638,424	16,168,757
Proceeds from issuance of common stock, net	$ 928,286,442	$ 144,795,253	97,341,397
Issuance of common stock under distribution reinvestment plan (in shares)	1,418,253	774,551
Issuance of common stock under distribution reinvestment plan	$ 12,290,976	$ 6,647,021	6,752,677
Repurchases of common stock	(22,204,454)	(17,141,202)	(8,522,390)
Offering costs	(1,058,658)	(1,750)	(690,848)
Shareholder distributions	(71,114,670)	(31,038,522)	(25,884,105)
Distributions to Special Unitholder		(8,052,116)	(170,000)
Net investment income	2,655,809	8,807,687	7,277,091
Net realized gain (loss) on investments	(29,182)	7,830,550	12,915,738
Net change in unrealized appreciation (depreciation) on investments	56,023,470	51,377,370	27,296,880
Net change in unrealized appreciation on foreign currency translation	10,727	92,019	7,589
Net change in unrealized appreciation (depreciation) on swap contracts	2,248,926	(4,872,567)	(5,002,305)
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts	$ (17,888,961)	$ (18,529,344)	$ (10,461,973)
Proceeds from shares transferred (in shares)	(1,308)	(271)
Deferred sales commissions	$ (5,461,652)
Ending balance (in shares)	165,387,519	62,870,347	47,889,610
Ending balance	$ 1,439,310,632	$ 555,551,859	$ 415,637,460
Common Members’ Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	555,551,859	408,739,652	312,980,571
Proceeds from issuance of common stock, net	928,286,442	144,795,253	97,341,397
Issuance of common stock under distribution reinvestment plan	12,290,976	6,647,021	6,752,677
Repurchases of common stock	(22,204,454)	(17,141,202)	(8,522,390)
Offering costs	(1,058,658)	(1,750)	(690,848)
Shareholder distributions	(71,114,670)	(31,038,522)	(25,884,105)
Net investment income	2,655,809	8,807,687	7,277,091
Net realized gain (loss) on investments	(29,182)	6,177,848	11,265,324
Net change in unrealized appreciation (depreciation) on investments	56,023,470	51,616,418	22,676,163
Net change in unrealized appreciation on foreign currency translation	10,727	92,019	7,589
Net change in unrealized appreciation (depreciation) on swap contracts	2,248,926	(4,613,221)	(4,001,844)
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts	(17,888,961)	(18,529,344)	(10,461,973)
Deferred sales commissions	(5,461,652)
Ending balance	$ 1,439,310,632	$ 555,551,859	$ 408,739,652
Common stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	62,870,347	47,889,610	37,003,502
Beginning balance	$ 62,870	$ 47,890	$ 37,004
Proceeds from issuance of common stock, net (in shares)	103,638,424	16,168,757	11,086,672
Proceeds from issuance of common stock, net	$ 103,638	$ 16,167	$ 11,087
Issuance of common stock under distribution reinvestment plan (in shares)	1,418,253	774,551	784,496
Issuance of common stock under distribution reinvestment plan	$ 1,418	$ 775	$ 784
Repurchases of common stock (in shares)	(2,538,197)	(1,962,300)	(985,060)
Repurchases of common stock	$ (2,538)	$ (1,962)	$ (985)
Proceeds from shares transferred (in shares)	(1,308)	(271)
Ending balance (in shares)	165,387,519	62,870,347	47,889,610
Ending balance	$ 165,388	$ 62,870	$ 47,890
Paid-in Capital in Excess of Par Value
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	550,896,111	416,611,769	321,741,819
Proceeds from issuance of common stock, net	928,182,804	144,779,086	97,330,310
Issuance of common stock under distribution reinvestment plan	12,289,558	6,646,246	6,751,893
Repurchases of common stock	(22,201,916)	(17,139,240)	(8,521,405)
Offering costs	(1,058,658)	(1,750)	(690,848)
Ending balance	1,468,107,899	550,896,111	416,611,769
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(60,708,055)	(38,477,220)	(19,870,206)
Shareholder distributions	(71,114,670)	(31,038,522)	(25,884,105)
Net investment income	2,655,809	8,807,687	7,277,091
Deferred sales commissions	(5,461,652)
Ending balance	(134,628,568)	(60,708,055)	(38,477,220)
Accumulated Net Realized Gain on Investments
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	18,141,632	11,963,784	698,460
Net realized gain (loss) on investments	(29,182)	6,177,848	11,265,324
Ending balance	18,112,450	18,141,632	11,963,784
Accumulated Unrealized Appreciation (Depreciation) on Investments, Net of Deferred Taxes
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	55,759,375	22,672,301	10,458,111
Net change in unrealized appreciation (depreciation) on investments	56,023,470	51,616,418	22,676,163
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts	(17,888,961)	(18,529,344)	(10,461,973)
Ending balance	93,893,884	55,759,375	22,672,301
Accumulated Unrealized Appreciation (Depreciation) on Foreign Currency Translation
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(108,971)	(200,990)	(208,579)
Net change in unrealized appreciation on foreign currency translation	10,727	92,019	7,589
Ending balance	(98,244)	(108,971)	(200,990)
Accumulated Unrealized Appreciation (Depreciation) on Swap Contracts
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(8,491,103)	(3,877,882)	123,962
Net change in unrealized appreciation (depreciation) on swap contracts	2,248,926	(4,613,221)	(4,001,844)
Ending balance	(6,242,177)	(8,491,103)	(3,877,882)
Special Unitholder
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	0	6,897,808	1,797,138
Distributions to Special Unitholder		(8,052,116)	(170,000)
Net realized gain (loss) on investments		1,652,702	1,650,414
Net change in unrealized appreciation (depreciation) on investments		(239,048)	4,620,717
Net change in unrealized appreciation (depreciation) on swap contracts		(259,346)	(1,000,461)
Ending balance	$ 0	$ 0	$ 6,897,808

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net increase in net assets from operations	$ 43,020,789	$ 44,705,715	$ 32,033,020
Adjustments to reconcile net increase in net assets from operations to net cash used in operating activities:
Amortization of deferred financing costs	905,959	576,464	226,742
Gross funding of new or existing investments	(1,113,729,511)	(395,034,767)	(353,585,860)
Return of capital	440,266,245	212,742,142	161,551,945
Proceeds from principal payments and sales of investments	9,928,720	67,958,438	64,254,366
Purchase of money market funds, net	(56,219,716)	(6,188,106)	29,337,280
Net realized (gain) loss on investments	29,182	(7,830,550)	(12,915,738)
Net change in unrealized appreciation on investments	(56,023,470)	(51,377,370)	(27,296,880)
Net change in unrealized appreciation on foreign currency translation	(10,727)	(92,019)	(7,589)
Net change in unrealized (appreciation) depreciation on swap contracts	(2,248,926)	4,872,567	5,002,305
Deferred tax expense	8,838,958	11,367,513	7,273,542
(Increase) decrease in other assets:
Receivable for investments sold	4,689,190	17,254,307	(22,013,491)
Receivable for return of capital	1,505,140	(2,159,762)	0
Dividend receivable	(3,299,573)	(6,560,783)	(132,846)
Other assets	(8,496,287)	(2,587,312)	(410,486)
Increase (decrease) in other liabilities:
Payable for investments purchased	(3,414,109)	(3,050,697)	7,493,366
Management fee payable	1,216,087	782,618	(315,179)
Performance participation fee payable	(180,783)	3,540,052	0
Accounts payable and accrued expenses	1,707,939	159,231	(299,509)
Net cash (used in) operating activities	(731,514,893)	(110,922,319)	(109,805,012)
Financing activities
Borrowings on credit facility and term note	0	34,736,220	55,580,682
Paydowns on credit facility and term note	(7,993,991)	(16,584,956)	(14,255,676)
Payments of financing costs	0	(1,116,629)	(2,192,009)
Proceeds from issuance of shares of common stock, net	933,869,472	139,553,538	97,025,448
Distributions paid	(55,097,266)	(23,795,124)	(18,607,250)
Offering costs	(452,799)	0	(710,029)
Deferred sales commission	(966,901)	0	0
Repurchases of common stock	(20,656,066)	(13,224,248)	(7,585,418)
Distribution to Special Unitholder	0	(8,052,116)	(170,000)
Net cash provided by financing activities	848,702,449	111,516,685	109,085,748
Net increase (decrease) in cash and cash equivalents	117,187,556	594,366	(719,264)
Cash, cash equivalents and restricted cash, beginning of period	4,675,836	4,081,470	4,800,734
Cash, cash equivalents and restricted cash, end of period	121,863,392	4,675,836	4,081,470
Reconciliation of cash, cash equivalents and restricted cash per the Consolidated Statements of Assets and Liabilities
Cash and cash equivalents	92,179,779	4,675,836	3,652,218
Restricted cash	29,683,613	0	429,252
Total cash, cash equivalents and restricted cash	121,863,392	4,675,836	4,081,470
Supplemental disclosure of cash flow information
Cash interest paid during the period	1,659,715	3,289,568	1,360,409
Shareholder contribution receivable from sale of common stock	2,052,750	6,418,454	650,000
Due to Advisor for offering costs	607,610	1,751	0
Deferred sales commission payable	$ 4,626,626	$ 131,875	$ 56,483

CONSOLIDATED SCHEDULES OF INVES

CONSOLIDATED SCHEDULES OF INVESTMENTS - USD ($)		Dec. 31, 2021		Dec. 31, 2020
Investments at Cost		$ 1,292,072,217		$ 572,347,137
Fair Value		1,435,742,001		659,982,724
Liabilities in excess of other assets other than investments		$ 3,568,631	[1]	$ (104,430,865)	[2]
Liabilities in excess of other assets other than investments (in percentage)		0.50%	[1],[3]	(18.90%)	[2],[4]
Total Net Assets		$ 1,439,310,632	[1]	$ 555,551,859	[2]
Fair value percentage of net assets		100.00%	[1],[3]	100.00%	[2],[4]
TOTAL INVESTMENTS
Investments at Cost		$ 1,292,072,217	[1]	$ 572,347,137	[2]
Fair Value		$ 1,435,742,001	[1]	$ 659,982,724	[2]
Fair value percentage of net assets		99.50%	[1],[3]	118.90%	[2],[4]
Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 1,191,393,635		$ 523,846,720
Fair Value		1,335,063,419		611,482,307
Total Investments in non-controlled/non-affiliated portfolios
Investments at Cost		33,286,139		37,327,690
Fair Value		33,286,139		37,327,690
Battery Storage
Investments at Cost		11,288,841		8,839,235
Fair Value		$ 10,747,811		$ 8,839,235
Fair value percentage of net assets		0.70%		1.30%
Battery Storage | Pacifica Portfolio
Investments at Cost		$ 11,288,841		$ 8,839,235
Fair Value		10,747,811		8,839,235
Biomass
Investments at Cost		24,533,222		23,236,352
Fair Value		$ 17,184,912		$ 23,236,352
Fair value percentage of net assets		1.20%		3.50%
Biomass | Eagle Valley Biomass Portfolio
Investments at Cost		$ 24,533,222		$ 23,236,352
Fair Value		17,184,912		23,236,352
Wind
Investments at Cost		321,509,864		139,769,540
Fair Value		$ 340,034,522		$ 154,968,628
Fair value percentage of net assets		23.70%		23.50%
Wind | Sego Lily - Wind Portfolio
Investments at Cost		$ 117,410,390
Fair Value		140,965,616
Wind | Greenbacker Wind Holding II
Investments at Cost		62,787,210		$ 33,834,320
Fair Value		62,272,198		35,839,967
Wind | Greenbacker Wind - HoldCo Portfolio
Investments at Cost		84,674,188		73,244,891
Fair Value		78,025,844		75,013,771
Wind | Other Wind Investments Portfolios
Investments at Cost		56,638,076		19,986,133
Fair Value		58,770,864		20,356,806
Wind | Greenbacker Wind Portfolio - Maine
Investments at Cost				12,704,196
Fair Value				23,758,084
Other Investments
Investments at Cost		35,034,396		23,669,446
Fair Value		$ 35,243,259		$ 23,291,114
Fair value percentage of net assets		2.50%		3.50%
Other Investments | Other Portfolios
Investments at Cost		$ 35,034,396		$ 23,669,446
Fair Value		35,243,259		23,291,114
Energy Efficiency
Investments at Cost		668,736		738,348
Fair Value		$ 685,784		$ 741,581
Fair value percentage of net assets		0.00%		0.10%
Energy Efficiency | Other Energy Efficiency Portfolios
Investments at Cost		$ 668,736		$ 738,348
Fair Value		685,784		741,581
Limited Liability Company Member Interests in the United States - Not readily marketable | Total Investments in controlled/affiliated Portfolios
Investments at Cost		1,191,393,635	[1]	523,846,720	[2]
Fair Value		$ 1,335,063,419	[1]	$ 611,482,307	[2]
Fair value percentage of net assets		92.50%	[1],[3]	110.20%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Battery Storage | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 11,288,841	[1],[5]	$ 8,839,235	[2]
Fair Value		$ 10,747,811	[1],[5]	$ 8,839,235	[2]
Fair value percentage of net assets		0.70%	[1],[3],[5]	1.60%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Battery Storage | Pacifica Portfolio | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)		100.00%	[1]	100.00%	[2],[6]
Investments at Cost		$ 11,288,841	[1]	$ 8,839,235	[2],[6]
Fair Value		$ 10,747,811	[1]	$ 8,839,235	[2],[6]
Fair value percentage of net assets		0.70%	[1],[3]	1.60%	[2],[4],[6]
Limited Liability Company Member Interests in the United States - Not readily marketable | Biomass | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 24,533,222	[1]	$ 23,236,352	[2]
Fair Value		$ 17,184,912	[1]	$ 23,236,352	[2]
Fair value percentage of net assets		1.20%	[1],[3]	4.20%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Biomass | Eagle Valley Biomass Portfolio | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)		100.00%	[1]	100.00%	[2]
Investments at Cost		$ 24,533,222	[1]	$ 23,236,352	[2]
Fair Value		$ 17,184,912	[1]	$ 23,236,352	[2]
Fair value percentage of net assets		1.20%	[1],[3]	4.20%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Commercial Solar | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 798,358,576	[1]	$ 327,593,799	[2]
Fair Value		$ 931,167,131	[1]	$ 400,405,397	[2]
Fair value percentage of net assets		64.60%	[1],[3]	72.00%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Commercial Solar | Celadon Portfolio | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)	[1],[5]	100.00%
Investments at Cost	[1],[5]	$ 165,129,450
Fair Value	[1],[5]	$ 187,410,880
Fair value percentage of net assets	[1],[3],[5]	13.00%
Limited Liability Company Member Interests in the United States - Not readily marketable | Commercial Solar | GEH Portfolio | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)		100.00%	[1],[5]	100.00%	[2]
Investments at Cost		$ 150,463,205	[1],[5]	$ 114,253,479	[2]
Fair Value		$ 157,925,117	[1],[5]	$ 124,637,707	[2]
Fair value percentage of net assets		11.00%	[1],[3],[5]	22.40%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Commercial Solar | Ponderosa Portfolio | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)	[1],[5]	100.00%
Investments at Cost	[1],[5]	$ 49,514,975
Fair Value	[1],[5]	$ 59,577,751
Fair value percentage of net assets	[1],[3],[5]	4.10%
Limited Liability Company Member Interests in the United States - Not readily marketable | Commercial Solar | Sego Lily - Solar Portfolio | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)		100.00%	[1],[5]	100.00%	[2],[6]
Investments at Cost		$ 107,621,275	[1],[5]	$ 29,178,404	[2],[6]
Fair Value		$ 122,272,431	[1],[5]	$ 62,135,652	[2],[6]
Fair value percentage of net assets		8.50%	[1],[3],[5]	11.20%	[2],[4],[6]
Limited Liability Company Member Interests in the United States - Not readily marketable | Commercial Solar | Trillium Portfolio | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 74,764,309	[1]	$ 83,219,738	[2],[6]
Fair Value		$ 101,432,185	[1]	$ 105,913,033	[2],[6]
Fair value percentage of net assets		7.00%	[1],[3]	19.10%	[2],[4],[6]
Limited Liability Company Member Interests in the United States - Not readily marketable | Commercial Solar | Other Commercial Solar Portfolios | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)		100.00%	[1],[5],[7]	100.00%	[2],[6],[8]
Investments at Cost		$ 250,865,362	[1],[5],[7]	$ 67,933,619	[2],[6],[8]
Fair Value		$ 302,548,767	[1],[5],[7]	$ 70,814,994	[2],[6],[8]
Fair value percentage of net assets		21.00%	[1],[3],[5],[7]	12.70%	[2],[4],[6],[8]
Limited Liability Company Member Interests in the United States - Not readily marketable | Commercial Solar | Magnolia Sun Portfolio | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)	[2]			100.00%
Investments at Cost	[2]			$ 33,008,559
Fair Value	[2]			$ 36,904,011
Fair value percentage of net assets	[2],[4]			6.60%
Limited Liability Company Member Interests in the United States - Not readily marketable | Wind
Fair value percentage of net assets	[2]			28.00%
Limited Liability Company Member Interests in the United States - Not readily marketable | Wind | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 321,509,864	[1]	$ 139,769,540	[2]
Fair Value		$ 340,034,522	[1]	$ 154,968,628	[2]
Fair value percentage of net assets		23.60%	[1],[3]	28.00%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Wind | Sego Lily - Wind Portfolio | Total Investments in controlled/affiliated Portfolios
Investments at Cost	[1]	$ 117,410,390
Fair Value	[1]	$ 140,965,616
Fair value percentage of net assets	[1],[3]	9.80%
Limited Liability Company Member Interests in the United States - Not readily marketable | Wind | Greenbacker Wind Holding II | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)		100.00%	[1]	100.00%	[2]
Investments at Cost		$ 62,787,210	[1]	$ 33,834,320	[2]
Fair Value		$ 62,272,198	[1]	$ 35,839,967	[2]
Fair value percentage of net assets		4.30%	[1],[3]	6.50%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Wind | Greenbacker Wind - HoldCo Portfolio | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)		100.00%	[1]	100.00%	[2]
Investments at Cost		$ 84,674,188	[1]	$ 73,244,891	[2]
Fair Value		$ 78,025,844	[1]	$ 75,013,771	[2]
Fair value percentage of net assets		5.40%	[1],[3]	13.50%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Wind | Other Wind Investments Portfolios | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)		100.00%	[1]	100.00%	[2]
Investments at Cost		$ 56,638,076	[1]	$ 19,986,133	[2]
Fair Value		$ 58,770,864	[1]	$ 20,356,806	[2]
Fair value percentage of net assets		4.10%	[1],[3]	3.70%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Wind | Greenbacker Wind Portfolio - Maine | Total Investments in controlled/affiliated Portfolios
Shares or Principal Amount (in percentage)	[2],[6]			100.00%
Investments at Cost	[2],[6]			$ 12,704,196
Fair Value	[2],[6]			$ 23,758,084
Fair value percentage of net assets	[2],[4],[6]			4.30%
Limited Liability Company Member Interests in the United States - Not readily marketable | Other Investments | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 35,034,396	[1]	$ 23,669,446	[2]
Fair Value		$ 35,243,259	[1]	$ 23,291,114	[2]
Fair value percentage of net assets		2.40%	[1],[3]	4.20%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Other Investments | Other Portfolios | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 35,034,396	[1],[9]	$ 23,669,446	[2],[10]
Fair Value		$ 35,243,259	[1],[9]	$ 23,291,114	[2],[10]
Fair value percentage of net assets		2.40%	[1],[3],[9]	4.20%	[2],[4],[10]
Limited Liability Company Member Interests in the United States - Not readily marketable | Energy Efficiency | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 668,736	[1]	$ 738,348	[2]
Fair Value		$ 685,784	[1]	$ 741,581	[2]
Fair value percentage of net assets		0.00%	[1],[3]	0.20%	[2],[4]
Limited Liability Company Member Interests in the United States - Not readily marketable | Energy Efficiency | Other Energy Efficiency Portfolios | Total Investments in controlled/affiliated Portfolios
Investments at Cost		$ 668,736	[1],[11]	$ 738,348	[2],[12]
Fair Value		$ 685,784	[1],[11]	$ 741,581	[2],[12]
Fair value percentage of net assets		0.00%	[1],[3],[11]	0.20%	[2],[4],[12]
Secured Loans - Not readily marketable | Total Investments in non-controlled/non-affiliated portfolios
Investments at Cost		$ 33,286,139	[1]	$ 37,327,690	[2]
Fair Value		$ 33,286,139	[1]	$ 37,327,690	[2]
Fair value percentage of net assets		2.20%	[1],[3]	6.70%	[2],[4]
Secured Loans - Not readily marketable | Chaberton Loan | Total Investments in non-controlled/non-affiliated portfolios
Interest	[1]	8.00%
Shares or Principal Amount	[1]	$ 2,247,962
Investments at Cost	[1]	2,247,962
Fair Value	[1]	$ 2,247,962
Fair value percentage of net assets	[1],[3]	0.20%
Secured Loans - Not readily marketable | Encore Loan | Total Investments in non-controlled/non-affiliated portfolios
Interest		10.00%	[1]	10.00%	[2]
Shares or Principal Amount		$ 3,058,527	[1]	$ 10,606,725	[2]
Investments at Cost		3,058,527	[1]	10,606,725	[2]
Fair Value		$ 3,058,527	[1]	$ 10,606,725	[2]
Fair value percentage of net assets		0.20%	[1],[3]	1.90%	[2],[4]
Secured Loans - Not readily marketable | Hudson Loan | Total Investments in non-controlled/non-affiliated portfolios
Interest		8.00%	[1]	8.00%	[2]
Shares or Principal Amount		$ 4,984,650	[1]	$ 6,021,402	[2]
Investments at Cost		4,984,650	[1]	6,021,402	[2]
Fair Value		$ 4,984,650	[1]	$ 6,021,402	[2]
Fair value percentage of net assets		0.30%	[1],[3]	1.10%	[2],[4]
Secured Loans - Not readily marketable | Hudson II Loan | Total Investments in non-controlled/non-affiliated portfolios
Interest		8.00%	[1]	8.00%	[2]
Shares or Principal Amount		$ 4,227,098	[1]	$ 3,923,873	[2]
Investments at Cost		4,227,098	[1]	3,923,873	[2]
Fair Value		$ 4,227,098	[1]	$ 3,923,873	[2]
Fair value percentage of net assets		0.30%	[1],[3]	0.70%	[2],[4]
Secured Loans - Not readily marketable | New Market Loan | Total Investments in non-controlled/non-affiliated portfolios
Interest		9.00%	[1]	9.00%	[2]
Shares or Principal Amount		$ 5,008,070	[1]	$ 5,007,350	[2]
Investments at Cost		5,008,070	[1]	5,007,350	[2]
Fair Value		$ 5,008,070	[1]	$ 5,007,350	[2]
Fair value percentage of net assets		0.30%	[1],[3]	0.90%	[2],[4]
Secured Loans - Not readily marketable | Shepherd's Run Loan | Total Investments in non-controlled/non-affiliated portfolios
Interest	[1]	8.00%
Shares or Principal Amount	[1]	$ 8,751,528
Investments at Cost	[1]	8,751,528
Fair Value	[1]	$ 8,751,528
Fair value percentage of net assets	[1],[3]	0.60%
Secured Loans - Not readily marketable | SE Solar Loan | Total Investments in non-controlled/non-affiliated portfolios
Interest		9.00%	[1]	9.00%	[2]
Shares or Principal Amount		$ 5,008,304	[1]	$ 5,005,244	[2]
Investments at Cost		5,008,304	[1]	5,005,244	[2]
Fair Value		$ 5,008,304	[1]	$ 5,005,244	[2]
Fair value percentage of net assets		0.30%	[1],[3]	0.90%	[2],[4]
Secured Loans - Not readily marketable | TUUSSO Loan | Total Investments in non-controlled/non-affiliated portfolios
Interest	[2]			8.00%
Shares or Principal Amount	[2]			$ 6,763,096
Investments at Cost	[2]			6,763,096
Fair Value	[2]			$ 6,763,096
Fair value percentage of net assets	[2],[4]			1.20%
Investments in Money Market Funds
Investments at Cost		$ 67,392,443	[1]	$ 11,172,727	[2]
Fair Value		$ 67,392,443	[1]	$ 11,172,727	[2]
Fair value percentage of net assets		4.80%	[1],[3]	2.00%	[2],[4]
Investments in Money Market Funds | Allspring Treasury Plus Money Market Fund - Institutional Class
Shares or Principal Amount	[1]	$ 16,823,110
Investments at Cost	[1]	16,823,110
Fair Value	[1]	$ 16,823,110
Fair value percentage of net assets	[1],[3]	1.20%
Investments in Money Market Funds | Fidelity Government Portfolio - Class I
Shares or Principal Amount		$ 16,873,111	[1]	$ 10,100,000	[2]
Investments at Cost		16,873,111	[1]	10,100,000	[2]
Fair Value		$ 16,873,111	[1]	$ 10,100,000	[2]
Fair value percentage of net assets		1.20%	[1],[3]	1.80%	[2],[4]
Investments in Money Market Funds | First American Government Obligations Fund - Class X
Shares or Principal Amount	[1]	$ 16,823,111
Investments at Cost	[1]	16,823,111
Fair Value	[1]	$ 16,823,111
Fair value percentage of net assets	[1],[3]	1.20%
Investments in Money Market Funds | First American Government Obligations Fund - Class Z
Shares or Principal Amount		$ 50,000	[1]	$ 1,072,720	[2]
Investments at Cost		50,000	[1]	1,072,720	[2]
Fair Value		$ 50,000	[1]	$ 1,072,720	[2]
Fair value percentage of net assets		0.00%	[1],[3]	0.20%	[2],[4]
Investments in Money Market Funds | JPMorgan US Government Money Market Fund - Class L
Shares or Principal Amount	[1]	$ 16,823,111
Investments at Cost	[1]	16,823,111
Fair Value	[1]	$ 16,823,111
Fair value percentage of net assets	[1],[3]	1.20%
Investments in Money Market Funds | Invesco Government & Agency Portfolio - Institutional Class
Shares or Principal Amount	[2]			$ 7
Investments at Cost	[2]			7
Fair Value	[2]			$ 7
Fair value percentage of net assets	[2],[4]			0.00%
[1]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within this Consolidated Schedules of Investments.
[2]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within the Consolidated Schedules of Investments.
[3]	Percentages are based on net assets of $1,439,310,632 as of December 31, 2021.
[4]	Percentages are based on net assets of $555,551,859 as of December 31, 2020.
[5]	Includes assets that have not reached COD.
[6]	Includes assets that have not reached COD.
[7]	Includes the Canadian Northern Lights assets, which are located outside of the United States of America and are a Capital Stock investment.
[8]	Includes the Canadian Northern Lights assets, which are located outside of the United States of America and are a Capital Stock investment.
[9]	Includes pre-acquisition and due diligence expenses
[10]	Includes pre-acquisition and due diligence expenses.
[11]	Includes capital leases and secured loans
[12]	Includes capital leases and secured loans.

CONSOLIDATED SCHEDULES OF INV_2

CONSOLIDATED SCHEDULES OF INVESTMENTS (Interest Rate Swaps) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Fixed Pay Rate	1.604%
Notional Amount	$ 284,692,696
Interest Rate Swap
Value	(7,501,983)	$ (9,750,909)
Upfront Premiums Paid (Received)	$ 5,000,000	$ 0
Fifth Third Financial Risk Solutions Due 02/29/2032 | Interest Rate Swap
Fixed Pay Rate	2.261%	2.261%
Notional Amount	$ 15,406,096	$ 17,197,263
Value	(767,195)	(1,588,956)
Upfront Premiums Paid (Received)	$ 0	$ 0
Fifth Third Financial Risk Solutions Due 12/31/2038 | Interest Rate Swap
Fixed Pay Rate	2.648%	2.648%
Notional Amount	$ 26,207,255	$ 25,672,154
Value	(1,899,786)	(3,388,560)
Upfront Premiums Paid (Received)	$ 0	$ 0
Fifth Third Financial Risk Solutions Due 12/31/2038 | Interest Rate Swap
Fixed Pay Rate	2.965%	2.965%
Notional Amount	$ 3,607,242	$ 3,707,924
Value	(378,543)	(614,732)
Upfront Premiums Paid (Received)	$ 0	$ 0
Fifth Third Financial Risk Solutions Due 12/31/2034 | Interest Rate Swap
Fixed Pay Rate	2.688%	2.688%
Notional Amount	$ 31,616,866	$ 34,695,980
Value	(2,294,124)	(4,143,159)
Upfront Premiums Paid (Received)	$ 0	$ 0
Fifth Third Financial Risk Solutions Due 6/30/2040 | Interest Rate Swap
Fixed Pay Rate	1.642%
Notional Amount	$ 5,314,050
Value	(106,475)
Upfront Premiums Paid (Received)	$ 0
Canadian Imperial Bank of Commerce Due 6/30/2044 | Interest Rate Swap
Fixed Pay Rate	1.604%
Notional Amount	$ 284,692,696
Value	(2,055,860)
Upfront Premiums Paid (Received)	$ 5,000,000
Fifth Third Financial Risk Solutions Due 07/09/2021 | Interest Rate Swap
Fixed Pay Rate		1.11%
Notional Amount		$ 3,033,889
Value		(15,502)
Upfront Premiums Paid (Received)		$ 0

Organization and Operations of

Organization and Operations of the Company	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Operations of the Company	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 other sustainable development projects and businesses. The LLC conducts substantially all 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 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. GREC Administration LLC and Danforth Shared Services LLC, both wholly owned subsidiaries of GREC, were formed in Delaware in January 2020 and May 2019, respectively. The use of “we,” “us,” “our” and the “Company” refer, collectively, to the LLC, GREC, GREC HoldCo, GREC Administration LLC and Danforth Shared Services LLC. We are externally managed and advised by our advisor, Greenbacker Capital Management LLC (the “Advisor” or “GCM”), 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. Pursuant to an initial Registration Statement filed in December 2011 (File No. 333-178786-01) and a second Registration Statement filed in February 2017 (File No. 333-211571), the LLC offered 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 LLC’s Distribution Reinvestment Plan (the “DRP”). Pursuant to the DRP, a shareholder owning publicly offered share classes may elect to have the full amount of cash distributions reinvested in additional shares. As of March 29, 2019, the LLC terminated its public offering of the shares as well as its privately offered Class P-A shares, which was subsequently reinstated as of October 18, 2020. While the LLC publicly offered three classes of shares: Classes A, C and I, as of December 31, 2021, the LLC was privately offering Classes P-A, P-I, P-D, P-T and P-S shares on a continuous basis. The publicly offered share classes had different selling commissions and dealer manager fees, and there is an ongoing distribution fee with respect to Class C shares. Following the termination of the LLC’s public offering of shares, the DRP continues to be available to existing investors who purchased shares as offered under the public offering. As of June 4, 2019, pursuant to our Registration Statement on Form S-3D (File No. 333-231960), we offered a maximum of $10,000,000 in shares to our existing shareholders pursuant to the DRP. As of November 30, 2020, pursuant to our Registration Statement on Form S-3D (File No. 333-251021), the LLC was offering up to an additional $20,000,000 in Class A, C and I shares to our existing shareholders pursuant to the DRP. As of February 1, 2021, the DRP was amended to include all of the LLC's privately offered share classes, and thus is available to all investors as is the LLC's Share Repurchase Program. As of March 17, 2022, the Company is closed to new equity capital and is no longer offering shares except pursuant to the DRP. As of December 31, 2021, the Company has made solar, wind, biomass, battery storage, and energy efficiency investments in 14 portfolios domiciled in the United States and in Canada, as well as seven secured loan investments in the United States (See Note 3. Investments). As of December 31, 2020, the Company had made solar, wind, biomass, battery storage, and energy efficiency investments in 13 portfolios domiciled in the United States and in Canada, as well as six secured loan investments in the United States. Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within the Consolidated Schedules of Investments.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Significant Accounting Policies	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, GREC HoldCo, and GREC Administration LLC and Danforth Shared Services LLC, both of which provide administrative services to the Company. 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 its investments , including investments in the underlying operating entities, at fair value with changes in fair value recognized in earnings. Additionally, the Company will not apply the 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, 2021 consolidated financial statements has been prepared by management and, in the opinion of management, contains all adjustments and eliminations necessary for a fair presentation in accordance with GAAP. Basis of Consolidation As provided under Regulation S-X and ASC Topic 946, the Company will generally not consolidate its investment in a company other than a wholly owned investment company or controlled operating company whose business consists of providing services to the Company. Accordingly, the Company consolidates in its consolidated financial statements the accounts of certain wholly owned subsidiaries that meet the criteria. All significant intercompany balances and transactions have been eliminated in consolidation. 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. As of December 31, 2021, the Company had $92,179,779 in cash presented on the Consolidated Statements of Assets and Liabilities. As of December 31, 2021, the Company did not hold any cash equivalents. Restricted Cash Restricted cash consists of cash accounts or letters of credit that are restricted for use on specific investments. As of December 31, 2021, restricted cash included $29,683,613 of collateral related to the ongoing construction of certain of the Company's pre-operational assets. 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 Foreign currency translation 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 to be 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 Measurement (“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 that the Company’s Board of Directors has reviewed and approved. To the extent that such market data is available, t he Company will use observable market data to estimate the fair value of investmen ts. 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 . These methodologies incorporate the Company’s assumptions about the factors that a market participant would use to value the asset. The Company considers investments in money market funds to be short-term investments. Short-term investments are stated at cost, which approximates fair value. For investments for which quoted market prices are not available, which comprise most of our investment portfolio, fair value is estimated by using the cost, income, or market approach. The income approach assumes that value is created by the expectation of future benefits, discounted by a risk premium, to calculate a current cash value. This estimate is the fair value: the amount an investor would be willing to pay to receive those future benefits. The market approach compares either recent comparable transactions to the investment or an offer to purchase an investment based upon a qualified bid: a signed term sheet and/or a signed purchase agreement. Adjustments to proposed prices are made to account for the probability of the deal closing, changes between proposed and executed terms, and any dissimilarity between the comparable transactions and their underlying investments. If multiple bids are qualified in the same valuation period, a blended market approach will be calculated. Prior to the second quarter of 2020, fair value for pre-operational assets was approximated using the cost approach. Beginning in the second quarter of 2020, our Advisor expanded the criteria whereby certain pre-operational assets are identified and qualified for the income approach, rather than the cost approach, for approximating fair value. Currently, we consider all owned assets that are fully construction ready with no impediments to begin construction and where the costs to complete such projects are well understood for the income approach. The fair value of such eligible projects is determined based upon a discounted cash flow methodology. If the portfolio has any significant portion of value that remains subject to negotiation or contract or if other significant risks to complete the project exist, the investment may be held at cost, as an approximation of fair value. These valuation methodologies involve a significant degree of judgment by management. In determining the appropriate fair value of an investment using these approaches, the most significant information and assumptions 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 mergers and acquisitions, the principal market and enterprise values and 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 non-occurrence 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 ("NAV") 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. For purposes of calculating our NAV, we carry all liabilities at cost. Earnings 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 members 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 members per share and net investment income per share for the years ended December 31, 2021, 2020 and 2019, respectively. For the year ended December 31, For the year ended December 31, For the year ended December 31, Basic and diluted Net investment income $ 2,655,809 $ 8,807,687 $ 7,277,091 Net increase in net assets attributed to common members $ 43,020,789 $ 43,551,407 $ 26,762,350 Net investment income per share $ 0.02 $ 0.16 $ 0.17 Net increase in net assets attributed to common members per share $ 0.34 $ 0.81 $ 0.61 Weighted average common shares outstanding 126,458,860 54,057,620 43,788,187 Revenue Recognition To the extent the Company expects to collect such amounts, interest income is recorded on an accrual basis. If there is reason to doubt an ability to collect such interest, interest receivable on loans and debt securities is not accrued for accounting purposes. 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 90 days or more past due, 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 regarding collectability. 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 when dividends are declared and determined that collection is probable. The timing and amount of dividend income is determined on at least a quarterly basis. This process includes an analysis at the individual project company level based on cash available from operations and working capital needed for the project company operations. Dividend income from our privately held, equity investments is recognized when approved. On a quarterly basis at a minimum, dividends received from the Company’s project companies, which generally reflect net cash flow from operations, are declared, accrued and paid. Net Realized Gains or Losses and Net Change in Unrealized Appreciation or Depreciation on Investments Without regard to unrealized appreciation or depreciation previously recognized, 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. 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 For loans and debt securities with contractual payment-in-kind interest, if the fair value of the investment indicates that such interest is collectible, any interest will be added to the principal balance of such investments and be recorded as income. 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 paid to the shareholder with respect to the Class C, P-S and P-T shares will be lower than the cash distributions with respect to the LLC's other share classes because of the distribution fee associated with the Class C, P-S and P-T shares, which is allocated specifically to these classes' 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, were initially paid by our Advisor and/or dealer manager on behalf of the Company in connection with its formation and the offering of its shares pursuant to now-terminated Registration Statements on Form S-1 (File No. 333-178786-01 and File No. 333-211571, respectively). The Company was obligated to reimburse our Advisor for O&O costs that it incurred on behalf of the Company, in accordance with the advisory agreement. However, with respect to the Company’s public offerings, the aggregate of selling commissions, dealer manager fees and the other O&O costs borne by the Company was not to exceed 15% of gross offering proceeds. Offering costs incurred by our Advisor in conjunction with the offering of shares of Class P-A, P-S, P-T and P-D under our private placement memoranda are subject to the reimbursement by the Company up to 0.50% (50 basis points) of gross offering proceeds for each such class of shares. 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. 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. As of December 31, 2021, $1,058,658 in O&O costs were incurred by our Advisor with respect to the Company’s continuous offering, of which $607,610 is a current payable and the remaining $0 is a contingent liability of the Company. As of December 31, 2020, $94,486 in O&O costs were incurred by our Advisor with respect to the Company’s continuous offering, of which $1,751 was a current payable and the remaining $92,735 was a contingent liability of the Company. The following table provides information in regard to the status of O&O costs related to the continuous offering as of December 31, 2021: December 31, 2021 Total O&O costs incurred by the Advisor and dealer manager $ 1,058,658 Amounts previously reimbursed to the Advisor/dealer manager by the Company 451,048 Amounts accrued and/or payable to Advisor by the Company 607,610 Amounts of the contingent liability subject to payment by the Company only upon adequate gross offering proceeds being raised $ — The following table provides information in regard to the status of O&O costs related to the terminated offering as of December 31, 2020: December 31, Total O&O costs incurred by the Advisor and dealer manager $ 94,486 Amounts previously reimbursed to the Advisor/dealer manager by the Company — Amounts accrued and/or payable to Advisor by the Company 1,751 Amounts of the contingent liability subject to payment by the Company only upon adequate gross offering proceeds being raised $ 92,735 Financing Costs Financing costs incurred by the Company for the issuance of debt liabilities are deferred and amortized using the straight-line method over the life of the debt liability. Financing costs related to debt liabilities incurred by the Company are presented on the Consolidated Statements of Assets and Liabilities as a direct deduction from the carrying amount of that debt liability. Return of Capital Receivable For operational assets, if the project company has inadequate cash to fund day-to-day expenses, the Company will loan funds to that project company through an investment. Once the project company has adequate cash, they will repay the loan by sending a return of capital distribution. As of December 31, 2021, and 2020, a return of capital receivable of $654,622 and $2,159,762, respectively, was recorded on the Consolidated Statements of Assets and Liabilities. Capital Gains Incentive Allocation and Distribution Pursuant to the terms of the LLC’s Third Amended and Restated Limited Liability Company Agreement, a capital gains incentive allocation was earned by GREC Advisors, LLC (the “Special Unitholder”), 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 LLC’s Third Amended and Restated Limited Liability Company Agreement did not contemplate the inclusion of unrealized gains in the calculation of the capital gains incentive allocation, the Company included unrealized gains in the calculation of the capital gains incentive distribution. This amount reflected the incentive distribution that would have been 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 Special Unitholder was not entitled to an incentive distribution with respect to unrealized gains unless and until such gains were realized. Thus, on each date that net asset value was calculated, the Company calculated the capital gains incentive distribution as if it were due and payable as of the end of such period and reflected as an allocation of equity between common members and the Special Unitholder. The capital gains incentive allocation was eliminated with the adoption of the Fourth Amended and Restated Limited Liability Company Agreement in August 2020 (as amended in November 2020, the “Operating Agreement”). A one-time distribution (settlement) in the amount of $4,749,000 was mutually agreed upon by the Company and the Special Unitholder. The remaining $4,193,559 was written off by reclassifying the Special Unitholder’s equity into common members' equity upon adoption of the Operating Agreement. The $(1,154,308) is presented on the Consolidated Statements of Operations as the Net decrease in net assets attributed to special unitholder for the year ended December 31, 2020. The Special unitholder’s equity on the Consolidated Statements of Assets and Liabilities as of December 31, 2020 is nil. Performance Participation Fee Under the Operating Agreement, the incentive fee payable by the Company was simplified to be structured with two components: the performance participation fee and the liquidation performance participation fee (each as defined in Note 5. Related Party Agreements and Transaction Agreements). The performance participation fee is based on the Company's total return amount during the relevant calculation period. The calculation of the performance participation fee is further detailed in Note 5. Related Party Agreements and Transaction Agreements. The performance participation fee is accounted for and classified as an operating expense and reflected as the performance participation fee on the Consolidated Statements of Operations. Under the new Operating Agreement, a performance participation fee payable of $3,359,269 and $3,540,052 was recorded as of December 31, 2021 and December 31, 2020, respectively, in the Consolidated Statements of Assets and Liabilities. The Performance Participation Fee recorded on the Consolidated Statements of Operations for the years ended December 31, 2021 and 2020 is $4,672,078 and $4,571,927, respectively. As disclosed in the 2020 Form 10-K, a result of the revisions to prior period financial statements discussed in Note 12. Revisions to Prior Period Financial Statements, there were a certain amount of proceeds paid under the Company’s share repurchase program that otherwise would not have been paid due to the misstatement historically impacting the Company’s share repurchase price. As a result, the Special Unitholder waived $(747,602) of performance participation fees for the year ended December 31, 2020, which is recorded as Performance participation fee waiver in the Consolidated Statements of Operations. 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 shares sold with a reduced front-end load sales charge and a trail fee. The costs expected to be incurred at the time of the sale of the Class C shares are recorded as a liability on the date of sale and represents the aggregate amount due for such costs over the period beginning at the time of sale and ending on the earlier date of (1) when the maximum amount of sales commission and related compensation is reached under regulatory regulations; (2) the date which approximates an expected liquidity event for the Company; or (3) the expected holding period of the investment. The costs expected to be incurred at the time of the sale of the Class P-T and Class P-S shares are recorded as a liability on the date of sale and represents the aggregate amount due for such costs over the period beginning at the time of sale and ending on the earlier date of (1) the date which approximates an expected liquidity event for the Company; or (2) the expected holding period of the investment. The estimated amount of the liability can be updated as management’s assumption surrounding an expected liquidity event changes or if the maximum of sales-related commissions and costs under regulatory regulations is attained. As of December 31, 2021, and 2020, the Company recorded a liability for deferred sales commissions in the amount of $4,626,626 and $131,875, respectively. Reclassifications Certain prior year amounts have been reclassified to conform with current year presentation. These reclassifications had no impact on prior periods’ results. Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within the Consolidated Schedules of Investments. 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. On the expiration, termination or settlement of a derivatives contract, the Company generally records a gain or loss. When there is a master netting agreement with a financial institution, any gain or loss on interest rate swaps with the same financial institution are netted for financial statement presentation. The fair value of interest rate swap contracts open as of December 31, 2021 is included on the Consolidated Schedule of Investments by contract. For the year ended December 31, 2021, the Company’s average monthly notional exposure to interest rate swap contracts was $109,591,475. Consolidated Statements of Assets and Liabilities – Fair Values of Derivatives at December 31, 2021 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 $ — Swap contracts, at fair value $ 7,501,983 $ — $ 7,501,983 Consolidated Statements of Assets and Liabilities – Fair Value of Derivatives at December 31, 2020 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 $ — Swap contracts, at fair value $ 9,750,909 $ — $ 9,750,909 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, Change in net unrealized depreciation on derivative transactions for the year ended December 31, Change in net unrealized depreciation on derivative transactions for the year ended December 31, Swaps Interest Rate Risk $ 2,248,926 $ (4,872,567) $ (5,002,305) $ 2,248,926 $ (4,872,567) $ (5,002,305) Risk Exposure Other expenses for the year ended December 31, Other expenses for the year ended December 31, Other expenses for the year ended December 31, Swaps Interest Rate Risk $ 2,024,070 $ 1,702,655 $ 229,731 $ 2,024,070 $ 1,702,655 $ 229,731 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 Statements of Assets and Liabilities. As appropriate, the Company minimizes counterparty credit risk through credit monitoring procedures and managing margin and collateral requirements. During December 2021, the Company entered into an agreement with Canadian Imperial Bank of Commerce for the purpose of hedging our investment in a pre-operating solar facility that the Company has contracted to acquire. The derivative instrument has a trade date of December 15, 2021, an effective date of March 31, 2024 and an initial notional amount of $284,692,696. The fixed rate is 1.604%. Per the terms of the agreement, the swap is contingent on the transaction closing. While the transaction has not yet closed, in order to lock in the terms, the Company made a payment for the amount of $5,000,000 to be maintained as cash collateral. As of December 31, 2021, this cash collateral is recorded in Other assets in the Consolidated Statements of Assets and Liabilities. Regarding our investment in the Canadian Northern Lights assets included in the Other Commercial Solar Portfolios, we have foreign currency risk related to our revenue and operating expenses, which are denominated in Canadian Dollars as opposed to U.S. Dollars. 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. To the extent of the Company’s earnings and profits, and the payment of the distributions would not be deductible by the LLC, distributions to members from the LLC would constitute dividend income taxable to such members. 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. As of December 31, 2021, including territories and provinces, the portfolio resides in 36 jurisdictions. 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

Investments

Investments	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Investments	Investments During the first quarter of 2021, the Company modified the presentation of the Consolidated Schedule of Investments to consolidate certain underlying portfolios. Certain portfolios that had been separately presented on the Consolidated Schedule of Investments are now aggregated with other portfolios in the same industry to be presented in a consolidated manner on the Consolidated Schedule of Investments. These consolidation efforts had no impact on the underlying portfolios or their individual cost or fair values, but rather represent the aggregation of several similar investments. Certain portfolios, including those determined to be individually significant, remain presented separately. Management believes that the consolidation of our portfolios results in a presentation that more accurately reflects the way in which we view our overall portfolio of investments and will enhance the information reported to the users of our financial statements. Management has recast the Schedule of Investments as of December 31, 2020 to conform with current year presentation based upon the methodology as outlined above. The composition of the Company’s investments as of December 31, 2021, at fair value, were as follows: Investments at Investments at Fair Value Battery Storage: Pacifica Portfolio $ 11,288,841 $ 10,747,811 0.7 % Subtotal $ 11,288,841 $ 10,747,811 0.7 % Biomass: Eagle Valley Biomass Portfolio $ 24,533,222 $ 17,184,912 1.2 % Subtotal $ 24,533,222 $ 17,184,912 1.2 % Commercial Solar: Celadon Portfolio $ 165,129,450 $ 187,410,880 13.1 % GEH Portfolio 150,463,205 157,925,117 11.0 % Ponderosa Portfolio 49,514,975 59,577,751 4.1 % Sego Lily - Solar Portfolio 107,621,275 122,272,431 8.5 % Trillium Portfolio 74,764,309 101,432,185 7.1 % Other Commercial Solar Portfolios 250,865,362 302,548,767 21.1 % Subtotal $ 798,358,576 $ 931,167,131 64.9 % Wind: Sego Lily - Wind Portfolio $ 117,410,390 $ 140,965,616 9.8 % Greenbacker Wind Holdings II Portfolio 62,787,210 62,272,198 4.3 % Greenbacker Wind - HoldCo Portfolio 84,674,188 78,025,844 5.4 % Other Wind Investments Portfolios 56,638,076 58,770,864 4.1 % Subtotal $ 321,509,864 $ 340,034,522 23.6 % Other Investments: Other Portfolios $ 35,034,396 $ 35,243,259 2.5 % Subtotal $ 35,034,396 $ 35,243,259 2.5 % Energy Efficiency: Other Energy Efficiency Portfolios $ 668,736 $ 685,784 0.1 % Subtotal $ 668,736 $ 685,784 0.1 % Secured Loans: Chaberton Loan $ 2,247,962 $ 2,247,962 0.2 % Encore Loan 3,058,527 3,058,527 0.2 % Hudson Loan 4,984,650 4,984,650 0.3 % Hudson II Loan 4,227,098 4,227,098 0.3 % New Market Loan 5,008,070 5,008,070 0.3 % Shepherd's Run Loan 8,751,528 8,751,528 0.6 % SE Solar Loan 5,008,304 5,008,304 0.3 % Subtotal $ 33,286,139 $ 33,286,139 2.2 % Investments in Money Market Funds: Allspring Treasury Plus Money Market Fund - Institutional Class $ 16,823,110 $ 16,823,110 1.2 % Fidelity Government Portfolio - Class I 16,873,111 16,873,111 1.2 % First American Government Obligations Fund - Class X 16,823,111 16,823,111 1.2 % First American Government Obligations Fund - Class Z 50,000 50,000 — % JPMorgan US Government Money Market Fund - Class L 16,823,111 16,823,111 1.2 % Subtotal $ 67,392,443 $ 67,392,443 4.8 % Total $ 1,292,072,217 $ 1,435,742,001 100.0 % The composition of the Company’s investments as of December 31, 2020, at fair value, were as follows: Investments at Investments at Fair Value Battery Storage: Pacifica Portfolio $ 8,839,235 $ 8,839,235 1.3 % Subtotal $ 8,839,235 $ 8,839,235 1.3 % Biomass: Eagle Valley Biomass Portfolio $ 23,236,352 $ 23,236,352 3.5 % Subtotal $ 23,236,352 $ 23,236,352 3.5 % Commercial Solar: GEH Portfolio $ 114,253,479 $ 124,637,707 18.9 % Magnolia Sun Portfolio 33,008,559 36,904,011 5.6 % Other Commercial Solar Portfolios 67,933,619 70,814,994 10.7 % Sego Lily - Solar Portfolio 29,178,404 62,135,652 9.4 % Trillium Portfolio 83,219,738 105,913,033 16.1 % Subtotal $ 327,593,799 $ 400,405,397 60.7 % Wind: Greenbacker Wind Holdings II Portfolio $ 33,834,320 $ 35,839,967 5.4 % Greenbacker Wind - HoldCo Portfolio 73,244,891 75,013,771 11.4 % Greenbacker Wind Portfolio - Maine 12,704,196 23,758,084 3.6 % Other Wind Investments Portfolios 19,986,133 20,356,806 3.1 % Subtotal $ 139,769,540 $ 154,968,628 23.5 % Other Investments: Other Portfolios $ 23,669,446 $ 23,291,114 3.5 % Subtotal $ 23,669,446 $ 23,291,114 3.5 % Energy Efficiency: Other Energy Efficiency Portfolios $ 738,348 $ 741,581 0.1 % Subtotal $ 738,348 $ 741,581 0.1 % Secured Loans: Encore Loan $ 10,606,725 $ 10,606,725 1.6 % Hudson Loan 6,021,402 6,021,402 0.9 % Hudson II Loan 3,923,873 3,923,873 0.6 % New Market Loan 5,007,350 5,007,350 0.8 % SE Solar Loan 5,005,244 5,005,244 0.8 % TUUSSO Loan $ 6,763,096 $ 6,763,096 1.0 % Subtotal $ 37,327,690 $ 37,327,690 5.7 % Investments Money Market Funds: Fidelity Government Portfolio - Class I $ 10,100,000 $ 10,100,000 1.5 % First American Government Obligation Fund - Class Z 1,072,720 1,072,720 0.2 % Invesco Government & Agency Portfolio - Institutional Class 7 7 — % Subtotal $ 11,172,727 $ 11,172,727 1.7 % Total $ 572,347,137 $ 659,982,724 100.0 % The counterparty to all the energy efficiency investments held by the Company as of December 31, 2021 and December 31, 2020 is a related party (See Note 5. Related Party Agreements and Transaction Agreements). The composition of the Company’s investments as of December 31, 2021 by geographic region, at fair value, were as follows: Investments at Investments at Fair Value United States: East Region $ 376,929,916 $ 444,160,983 30.9 % Mid - West Region 222,573,610 233,427,679 16.3 Mountain Region 268,907,355 286,693,236 20.0 South Region 105,516,478 111,030,877 7.7 West Region 249,149,279 291,286,897 20.3 Total United States $ 1,223,076,638 $ 1,366,599,672 95.2 % Canada: 1,603,136 1,749,886 0.1 Money Markets: 67,392,443 67,392,443 4.7 Total $ 1,292,072,217 $ 1,435,742,001 100.0 % The composition of the Company’s investments as of December 31, 2020 by geographic region, at fair value, were as follows: Investments at Investments at Fair Value United States: East Region $ 148,159,362 $ 168,616,615 25.5 % Mid - West Region 120,709,771 127,384,880 19.3 Mountain Region 113,435,944 153,512,583 23.3 South Region 83,302,384 85,763,612 13.0 West Region 93,963,813 111,842,679 16.9 Total United States $ 559,571,274 $ 647,120,369 98.0 % Canada: 1,603,136 1,689,628 0.3 Money Markets: 11,172,727 11,172,727 1.7 Total $ 572,347,137 $ 659,982,724 100.0 % The composition of the Company’s investments as of December 31, 2021 by industry, at fair value, were as follows: Investments at Investments at Fair Value Battery Storage (2) $ 11,288,841 $ 10,747,811 0.7 % Biomass 24,533,222 17,184,912 1.2 Commercial Solar (1) (2) 831,644,715 964,453,270 67.2 Wind 321,509,864 340,034,522 23.7 Other Investments 35,034,396 35,243,259 2.5 Energy Efficiency 668,736 685,784 — Money Market Funds 67,392,443 67,392,443 4.7 Total $ 1,292,072,217 $ 1,435,742,001 100.0 % (1) Includes loans in the amount of $33,286,139. (2) Includes assets that have not reached COD. The composition of the Company’s investments as of December 31, 2020 by industry, at fair value, were as follows: Investments at Investments at Fair Value Biomass $ 23,236,352 $ 23,236,352 3.5 % Commercial Solar (1) (2) 364,921,489 437,733,087 66.4 Battery Storage (2) 8,839,235 8,839,235 1.3 Wind (2) 139,769,540 154,968,628 23.5 Other Investments 23,669,446 23,291,114 3.5 Energy Efficiency 738,348 741,581 0.1 Money Market Funds 11,172,727 11,172,727 1.7 Total $ 572,347,137 $ 659,982,724 100.0 % (1) Includes loans in the amount of $37,327,690. (2) Includes assets that have not reached COD. Investments held as of December 31, 2021 and 2020 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 are investments in limited liability companies for which the Company serves as managing member.

Fair Value Measurements _ Inves

Fair Value Measurements — Investments	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements — Investments	Fair Value Measurements — Investments The following table presents fair value measurements of investments, by major class, as of December 31, 2021, according to the fair value hierarchy: Valuation Inputs Level 1 Level 2 Level 3 Fair Value Limited Liability Company Member Interests $ — $ — $ 1,332,932,893 $ 1,332,932,893 Capital Stock — — 1,749,886 1,749,886 Energy Efficiency Secured Loans — — 380,640 380,640 Secured Loans - Other — — 33,286,139 33,286,139 Money Market Funds 67,392,443 — — 67,392,443 Total $ 67,392,443 $ — $ 1,368,349,558 $ 1,435,742,001 Other Financial Instruments* Open swap contracts - liabilities $ — $ (7,501,983) $ — $ (7,501,983) Total $ — $ (7,501,983) $ — $ (7,501,983) * 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, 2020, according to the fair value hierarchy: Valuation Inputs Level 1 Level 2 Level 3 Fair Value Limited Liability Company Member Interests $ — $ — $ 609,394,039 $ 609,394,039 Capital Stock — — 1,689,628 1,689,628 Energy Efficiency Secured Loans — — 398,640 398,640 Secured Loans - Other — — 37,327,690 37,327,690 Money Market Funds 11,172,727 — — 11,172,727 Total $ 11,172,727 $ — $ 648,809,997 $ 659,982,724 Other Financial Instruments* Open swap contracts - liabilities $ — $ (9,750,909) $ — $ (9,750,909) Total $ — $ (9,750,909) $ — $ (9,750,909) * 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, 2021: Balance as of December 31, Net change Translation Purchases Cost adjustments (1) Sales and repayments of investments (2) Net realized Balance as of December 31, Limited Liability Company Member Interests $ 609,394,039 $ 55,973,939 $ — $ 1,089,298,390 $ (440,266,245) $ 18,561,952 $ (29,182) $ 1,332,932,893 Capital Stock 1,689,628 49,531 10,727 — — — — 1,749,886 Energy Efficiency - Secured Loans 398,640 — — — — (18,000) — 380,640 Secured Loans - Other 37,327,690 — — 24,431,121 — (28,472,672) — 33,286,139 Total $ 648,809,997 $ 56,023,470 $ 10,727 $ 1,113,729,511 $ (440,266,245) $ (9,928,720) $ (29,182) $ 1,368,349,558 (1) Includes 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 (depreciation) on Investments and Foreign currency translation for the year ended December 31, 2021 attributable to Level 3 investments still held as of December 31, 2021 was $56,034,197. Reclassifications impacting Level 3 of the fair value hierarchy are reported as transfers in or out of Level 3 as of the beginning of the period in which the reclassifications occur. There were no reclassifications attributable to Level 3 investments during the year ended December 31, 2021. 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, 2020 : Balance as of December 31, Net change in unrealized appreciation on investments Translation of assets and liabilities denominated in foreign currencies Purchases Cost adjustments (1) Sales and repayments of investments (2) Net realized gain on investments Balance as of December 31, Limited Liability Company Member Interests $ 449,981,086 $ 51,391,716 $ — $ 380,144,045 $ (212,742,142) $ (67,211,216) $ 7,830,550 $ 609,394,039 Capital Stock 1,611,955 (14,346) 92,019 — — — — 1,689,628 Energy Efficiency - Secured Loans 479,140 — — — — (80,500) — 398,640 Secured Loans - Other 23,103,690 — — 14,890,722 — (666,722) — 37,327,690 Total $ 475,175,871 $ 51,377,370 $ 92,019 $ 395,034,767 $ (212,742,142) $ (67,958,438) $ 7,830,550 $ 648,809,997 (1) Includes 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 (depreciation) on Investments and Foreign currency translation for the year ended December 31, 2020 attributable to Level 3 investments still held as of December 31, 2020 was $62,789,888. Reclassifications impacting Level 3 of the fair value hierarchy are reported as transfers in or out of Level 3 as of the beginning of the period in which the reclassifications occur. There were no reclassifications attributable to Level 3 investments during the year ended December 31, 2020. 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, 2019 : Balance as of December 31, Net change in unrealized appreciation on investments Translation of assets and liabilities denominated in foreign currencies Purchases Cost adjustments (1) Sales and Repayments of investments (2) Net realized gain on investments Balance as of December 31, Limited Liability Company Member Interests $ 304,542,921 $ 27,774,068 $ — $ 314,175,394 $ (159,495,169) $ (49,931,866) $ 12,915,738 $ 449,981,086 Capital Stock 2,081,554 (477,188) 7,589 — — — — 1,611,955 Energy Efficiency - Secured Loans 551,640 — — — — (72,500) — 479,140 Secured Loans - Other — — — 39,410,466 (2,056,776) (14,250,000) — 23,103,690 Total $ 307,176,115 $ 27,296,880 $ 7,589 $ 353,585,860 $ (161,551,945) $ (64,254,366) $ 12,915,738 $ 475,175,871 (1) Includes 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 (depreciation) on Investments and Foreign currency translation for the year ended December 31, 2019 attributable to Level 3 investments still held as of December 31, 2019 was $27,304,469. Reclassifications impacting Level 3 of the fair value hierarchy are reported as transfers in or out of Level 3 as of the beginning of the period in which the reclassifications occur. There were no reclassifications attributable to Level 3 investments during the year ended December 31, 2019. As of December 31, 2021, most 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, 2021: Fair Value Valuation Techniques Unobservable Inputs Range of Inputs Battery Storage* $ 10,747,811 Income Approach and Transaction Cost Discount rate, kWh storage, potential leverage and estimated remaining useful life 9.37%, 2.16% annual degradation in production, 11 years Biomass $ 17,184,912 Income Approach Discount rate, kWh production, potential leverage and estimated remaining useful life 8.25%, No annual degradation in production, 12 years Commercial Solar* $ 931,167,131 Income Approach and Transaction Cost Discount rate, kWh production, potential leverage and estimated remaining useful life 3.50%–9.07% (7.63%), 0%–0.50% (0.50%) annual degradation in production, 9.2–39.0 (33.6) years Wind $ 340,034,522 Income Approach Discount rate, kWh production, potential leverage and estimated remaining useful life 7.75%–8.43% (7.81%), No annual degradation in production, 18.7–31.0 (26.4) years Other Investments $ 35,243,259 Transaction Cost Not Applicable Not Applicable Energy Efficiency $ 685,784 Income and Collateral-Based Approach Market yields and value of collateral 10.25%, No annual degradation in production, 3.2–4.0 (3.6) years Secured Loans $ 33,286,139 Yield Analysis Market yields 8.00%–10.00% (8.48%) * Includes assets that have not reached COD. As of December 31, 2020, most 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, 2020: Fair Value Valuation Techniques Unobservable Inputs Range of Inputs (weighted average) Battery Storage* $ 8,839,235 Transaction Cost Not Applicable Not Applicable Biomass $ 23,236,352 Transaction Cost Not Applicable Not Applicable Commercial Solar* $ 400,405,397 Income Approach Discount rate, kWh production, potential leverage and estimated remaining useful life 7.25%–8.59% (8.01%) 0.50% annual degradation in production 8.5–40.0 (33.7) years Wind* $ 154,968,628 Income Approach and Transaction Cost Discount rate, kWh production, potential leverage and estimated remaining useful life 7.75%–9.25% (8.42%) No annual degradation in production, 19.7–30.7 (24.4) years Other Investments $ 23,291,114 Transaction Cost Not Applicable Not Applicable Energy Efficiency $ 741,581 Income and Collateral-Based Approach Income-Based Approach and Market yields 10.25% No annual degradation in production 4.2–5.0 (4.6) years Secured Loans $ 37,327,690 Yield Analysis Market yields 8.00%–10.00% (8.84%) * Includes assets that have not reached COD. 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 Transaction Agreements	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Agreements and Transaction Agreements	Related Party Agreements and Transaction Agreements The Company has executed advisory and administration agreements with the Advisor and Greenbacker Administration, LLC, our administrator, respectively, which entitles the Advisor, and certain affiliates of the Advisor, to specified fees upon the provision of certain services with regard to the ongoing management of the Company as well as reimbursement of O&O costs incurred by the Advisor on behalf of the Company (as discussed in Note 2. Significant Accounting Policies) and certain other operating costs incurred by the Advisor on behalf of the Company. As the Company’s previous public offering was terminated on March 29, 2019, our former dealer manager will no longer receive any selling commissions or dealer manager fees. However, our former dealer manager will continue to receive distribution fees on Class C shares until the maximum amount of commissions and dealer manager fees permitted by applicable regulation is reached. 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 the LLC. This entitles the Special Unitholder to an incentive allocation and distribution. The commissions, fees and reimbursement obligations related to our terminated continuous public offering and ongoing private placement included Selling Commissions, Dealer Manager fees and Distribution fees payable to the former dealer manager for Class A, Class C, Class P-A and Class I shares ranging from 1.75% to 7% of gross offering proceeds from the sale of such shares. With respect to Class C shares only, the Company pays the former 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. The Company will stop paying distribution fees at the earlier of 1) a listing of the Class C shares on a national securities exchange; 2) total underwriting compensation in the offering equals 10% of the gross proceeds from the primary offering of Class C shares, following the completion of such offering; or 3) Class C shares are no longer outstanding. The dealer manager may re-allow all or a portion of the distribution fee to participating broker-dealers and servicing broker-dealers. The Company estimated the amount of distribution fees expected to be paid and recorded that liability at the time of sale. The liability is included in Deferred sales commission payable on the Consolidated Statements of Assets and Liabilities and fees recorded in Accumulated gains (losses) (specific to the Class C Shares) on the Consolidated Statements of Assets and Liabilities. The Company continues to assess the value of the liability on a regular basis. The Company also reimbursed the Advisor for the O&O costs (other than selling commissions and dealer manager fees) it had incurred on the Company’s behalf related to the now terminated Registration Statements, 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. Offering costs incurred by our Advisor in conjunction with the offering of shares of Class P-A, P-S, P-T and P-D under our private placement memoranda are subject to the reimbursement by the Company up to 0.50% (50 basis points) of gross offering proceeds for each such class of shares. The fees and reimbursement obligations related to our ongoing operation of the Company are as follows: Type of Compensation and Recipient Determination of Amount Base Management Fees — Advisor The base management fee payable to the Advisor will be calculated at a monthly rate of 0.167% (2.00% annually) of our gross assets (including amounts borrowed up to $50,000,000) until gross assets exceed $800,000,000. The base management fee monthly rate will decrease to 0.14583% (1.75% annually) for gross assets between $800,000,001 to $1,500,000,000 and 0.125% (1.50% annually) for gross assets greater than $1,500,000,000. For services rendered under the advisory agreement, the base management fee will be payable monthly in arrears, or more frequently as authorized under the advisory agreement. 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 prorated. The base management fee may be deferred or waived, in whole or in 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. On July 1, 2021, the Company entered into the Fourth Amended and Restated Advisory Agreement with the Advisor. Effective July 1, 2021, the base management fee payable to the Advisor is calculated at a monthly rate of 0.167% (2.00% annually) of the net assets until the net assets exceed $800,000,000. The base management fee monthly rate will decrease to 0.14583% (1.75% annually) for net assets between $800,000,001 to $1,500,000,000 and to 0.125% (1.50% annually) for net assets greater than $1,500,000,000. Incentive Allocation and Distribution — Special Unitholder (effective through March 31, 2020) Under the LLC's Third Amended and Restated Limited Liability Company Agreement dated June 27, 2014, the incentive allocation and distribution had three parts: Income Incentive Distribution, Capital Gains Incentive Distribution and the Liquidation Incentive Distribution. The features of this incentive fee structure were as follows: ● The Income Incentive Distribution provided for the Special Unitholder, as a member of the LLC, to receive, on a quarterly basis, a cash distribution equal to a percentage of the LLC’s net investment income (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) for each quarter, in excess of a specified hurdle rate. ● The Capital Gains Incentive Distribution provided for the Special Unitholder, as a member of the LLC, to receive, on a quarterly basis, a cash distribution equal to a percentage of the LLC’s realized capital gains (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) for each quarter. ● The Liquidation Incentive Distribution provided for the Special Unitholder to receive a cash distribution equal to a percentage of the difference between the net proceeds from the liquidation of the LLC or the exchange listing of its shares (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) and the LLC’s aggregate NAV immediately prior to the time of such liquidation or listing. Type of Compensation and Recipient Determination of Amount Performance Participation Fees (effective April 1, 2020 and thereafter) Under the Operating Agreement, the "Performance Participation Fee" which the Special Unitholder is entitled to is calculated and payable in arrears, for an amount equal to 12.5% of the total return generated by the LLC during the most recently completed fiscal quarter, subject to a hurdle amount of 1.50% (or 6% annualized) (the "Hurdle Amount"), a loss carryforward amount and a fee carryforward amount. The "Total Return Amount" is defined for each quarterly calculation period, as an amount equal to the sum of: • The aggregate amount of all cash distributions accrued or paid (without duplication) during such quarter on the shares outstanding at the end of such quarter, plus • The amount of the change in aggregate NAV of such shares since the beginning of such quarter, before giving effect to (x) changes in the aggregate NAV of such shares during such quarter resulting solely from the net proceeds of issuances and/or repurchase of shares by the LLC, and (y) the amount of any accrual of the Performance Participation Fee during such quarter. The calculation of the Total Return Amount for each period shall include any appreciation or depreciation in the NAV of the shares issued during such period, but exclude the proceeds from the initial issuance of such shares. The total NAV of the shares outstanding as of the last business day of a calendar quarter shall be the amount against which changes in the total NAV of the shares outstanding during the subsequent calendar quarter is measured. Furthermore, the "Loss Carryforward Amount" shall initially equal zero and cumulatively increase in any calendar quarter by the absolute value of any negative total return for such quarter and cumulatively decrease in any calendar quarter by the amount of any positive total return. The "Fee Carryforward Amount" shall also initially equal zero, and cumulatively increase in any calendar quarter by (i) the amount, if any, by which the Hurdle Amount (noted above) for such quarter exceeds any positive Total Return Amount for such quarter; and (ii) the amount, if any, by which the catch-up amount for such quarter exceeds excess profits for such quarter. The fee carryforward amount shall cumulatively decrease in any calendar quarter by the amount, if any, of the Fee Carryforward Amount paid to the Special Unitholder for such quarter. Neither the Loss Carryforward Amount nor the Fee Carryforward Amounts shall be less than zero at any given time. Type of Compensation and Recipient Determination of Amount The Special Unitholder shall receive the Performance Participation Fee as follows: ● if the Total Return Amount for the applicable period exceeds the sum of (x) the Hurdle Amount for such period and (y) the Loss Carryforward Amount for such Period (any such excess, “Excess Profits”), 100% of such Excess Profits until the total amount paid to the Special Unitholder equals 12.5% of the sum of (x) the Hurdle Amount for such period and (y) any amount paid to the Special Unitholder pursuant to this clause (the “Catch-Up Amount”); ● to the extent there are remaining Excess Profits after payment of the Catch-Up Amount, 100% of such remaining Excess Profits until such amount paid to the Special Unitholder equals the amount of the Fee Carryforward Amount for such period; and ● to the extent there are remaining Excess Profits after payment of the Catch-Up Amount and the Fee Carryforward Amount (as defined above), 12.5% of such remaining Excess Profits. The "Liquidation Performance Participation Fee" payable to the Special Unitholder will equal 20.0% of the net proceeds from a liquidation of the LLC in excess of adjusted capital, as measured immediately prior to liquidation. Adjusted capital shall mean the LLC NAV immediately prior to the time of a liquidation or a listing. In the event of any liquidity event that involves a listing of the LLC’s shares, or a transaction in which the LLC’s members receive shares of a company that is listed, on a national securities exchange, the Liquidation Performance Participation Fee will equal 20.0% of the amount, if any, by which the LLC’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 Performance Participation Fee will be determined and payable in arrears 30 days after the commencement of trading following such liquidity event. The amendments to the incentive fee structure pursuant to the Operating Agreement were applied retroactively as of April 1, 2020 and for all periods thereafter. For the years ended December 31, 2021, 2020 and 2019, the Advisor earned $21,940,099, $10,364,635 and $8,461,616, respectively, in management fees. As of December 31, 2021 and 2020, the Company owed $2,271,687 and $1,055,600, respectively, to the Advisor in management fees, which amounts are included in Management fee payable on the Consolidated Statements of Assets and Liabilities. The Consolidated Statements of Operations reflects $4,672,078 and $4,571,927 Performance Participation Fee for the years ended December 31, 2021 and 2020, respectively. There was no capital gains incentive distribution for the year ended December 31, 2021 as this no longer exists under the new Performance Participation Fees methodology discussed above. There was a capital gains incentive distribution of $8,052,116 and $170,000 earned in the years ended December 31, 2020 and 2019, respectively. The Consolidated Statements of Operations also reflects a $1,154,308 and $5,270,670 incentive allocation shown as a Net decrease in net assets attributed to special unitholder for the years ended December 31, 2020 and 2019, respectively. As of December 31, 2021, the Performance Participation Fee payable and due was $3,359,269, which is reflected as the Performance participation fee payable on the Consolidated Statements of Assets and Liabilities. As previously discussed, under the Operating Agreement the Performance Participation Fee payable and due for the year ended December 31, 2020 was $3,540,052. As disclosed in the 2020 Form 10-K, the revisions to prior period financial statements resulted in a certain amount of proceeds paid under the Company’s share repurchase program that otherwise would not have been paid due to the misstatement historically impacting the Company’s offering price. To remedy the effect of the overpayment, GREC Advisors, LLC waived $(747,602) of performance participation fee for the year ended December 31, 2020, shown as Performance participation fee waiver on the Consolidated Statements of Operations. As of December 31, 2020, the total net amount of $3,540,052 remained unpaid and is reflected as the Performance participation fee payable on the Consolidated Statements of Assets and Liabilities. As of December 31, 2021 and 2020, $607,610 and $1,751 were due to the Advisor for O&O costs related to the continuous private offering, and shown as Due to Advisor on the Consolidated Statements of Assets and Liabilities, respectively. In the years ended December 31, 2021 and 2020, no dealer manager fees or selling commissions were paid to the former dealer manager. For the year ended December 31, 2019, the Company paid $231,892 in dealer manager fees, and $594,247 in selling commissions to the Company’s former dealer manager. These fees and commissions were paid in connection with the sale of the Company’s shares to investors and were recorded against the proceeds from the issuance of shares prior to receipt by the Company, and therefore are not reflected in the Consolidated Statements of Operations. As of December 31, 2021 and 2020, the Advisor owned 23,601 Class A shares. As of December 31, 2021 and 2020, the Advisor owned 2,776 and nil Class P-D shares, respectively. 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 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. These investments have a cost of $668,736 and a fair value of $685,784 and are included in Other Energy Efficiency Portfolios in the Consolidated Schedules of Investments as of December 31, 2021. As of December 31, 2021, all loans and operating leases are considered current per their terms. On October 9, 2020, the Company made a $5,000,000 limited partner (“LP”) commitment to Greenbacker Development Opportunities Fund I, LP (“GDEV”), which was increased to $6,075,000 in the fourth quarter of 2020. In April 2021, the commitment to GDEV increased to $7,500,000. As the initial investor, the Company was awarded a 10% carried interest participation in Greenbacker Development Opportunities GP I, LLC, GDEV's general partner. GDEV is an affiliate of GREC as GDEV shares the same investment advisor as GREC. As of December 31, 2021, $7,242,495 of the commitment was funded. This investment's cost of $7,242,495 and fair value of $7,580,119, is included in Other Portfolios in the Consolidated Schedules of Investments. On December 22, 2020, the Company, through its wholly owned subsidiary, Citrine Solar LLC, entered into a third transaction with Greenbacker Renewable Opportunity Zone Fund LLC (“GROZ”) to sell Gliden Solar, LLC. The asset was sold for a purchase price of $12,752,215 based upon the fair value of the investment as determined by an independent third-party appraiser. The transaction resulted in a realized gain of $1,608,644 recorded in the Consolidated Statements of Operations for the year ended December 31, 2020. As of December 31, 2021 and December 31, 2020 the remaining balance of nil and $4,758,243 is included in Investment sales receivable in the Consolidated Statements of Assets and Liabilities. Further, net working capital adjustments resulted in an additional realized (loss) of $(34,290) recorded in the Consolidated Statements of Operations for the year ended December 31, 2021. The Company entered into a transaction with Greenbacker Renewable Opportunity Zone Fund LLC (“GROZ”) to sell the Sol Phoenix Solar LLC investment, included within the Phoenix Solar Portfolio, on September 30, 2019 for an initial sale price of $16,874,761, pending final adjustments. The sales price was adjusted during the fourth quarter of 2019 and increased to $17,175,554 as of December 31, 2019, and finalized in the second quarter of 2020 to total $18,060,275. The changes to the purchase price were based upon a final fair value determination of the investment as determined by an independent third-party appraiser. GROZ is an affiliate of GREC, as GROZ shares the same advisor as GREC. Since GROZ is an affiliate of the Company, the determination of the purchase price was based on the fair value of the investment as determined by an independent third-party appraiser, and the purchase was approved by a majority of the Company’s Board of Directors (including a majority of the independent directors) not otherwise interested in the transaction to be fair and reasonable to the Company. The transaction resulted in a realized gain of $7,636,438, of which $141,974 was recorded for the year ended December 31, 2020, in Net realized (loss)/gain on investments on the Consolidated Statements of Operations. GROZ paid an initial amount of $1,500,000 at closing, with an additional $8,184,393 paid by GROZ as of December 31, 2019. The remainder was paid in the year ended December 31, 2020. On December 10, 2019 the Company, through its wholly owned subsidiary, Citrine Solar LLC, entered into a second transaction with GROZ to sell the Fremont CO I, LLC asset. The asset was sold for a purchase price of $5,272,475, which increased to $5,335,009 in the second quarter of 2020, based upon the fair value of the investment as determined by an independent third-party appraiser. The transaction resulted in a realized gain of $794,967 in the year ending December 31, 2019, which was reduced by $(32,576) in the twelve months ending December 31, 2020 due to the final accounting of the sale process. As of December 31, 2019, a total of $2,531,000 was paid by GROZ. The remainder was paid in the year ended December 31, 2020.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Borrowings	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, sole lead bookrunner, and as swap counterparty. The credit facility (the “Credit Facility”) consisted 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 allowed for additional drawdowns through December 31, 2018 and converted to a term loan with a maturity on January 5, 2024. On June 20, 2019, the Company, through GREC HoldCo, entered into an Amended and Restated Credit Agreement with the lenders party thereto and Fifth Third Bank, as administrative agent, sole lead arranger, sole lead bookrunner and swap counterparty. The new Credit Facility (the “New Credit Facility”) consists of a loan of up to the lesser of $110,000,000 or a borrowing base amount based on various solar projects that act as collateral for the credit facility, of which approximately $58.3 million was drawn down at closing. In November 2020, the Company, through GREC HoldCo, entered into the Second Amended and Restated Credit Agreement, which amends the New Credit Facility to make available a non-revolving line of Credit Facility that will convert into a term loan facility and a letter of Credit Facility. The commitments of the lenders aggregate to $97,822,841 between existing term loans, future committed loans and letters of credit, of which approximately $90.7 million was drawn down at closing. The New Credit Facility allowed for additional drawdowns through November 25, 2021, and converted to a term loan with a maturity on June 20, 2025. The Company used the net proceeds of borrowings under the New Credit Facility for investment in additional alternative energy power generation assets that are anticipated to become projects and for other general corporate purposes. Loans made under the New Credit Facility bear interest at 1.75% in excess of the three-month LIBOR. Prior to the New Credit Facility converting to a term loan, quarterly commitment fees on the average daily unused portion of the Credit Facility were payable at a rate per annum of 0.50%. Borrowings under the New Credit Facility are back-leveraged and secured by all the assets of GREC HoldCo and the equity interests of each direct and indirect subsidiary of the Company. The LLC, GREC and each direct and indirect subsidiary of the Company are guarantors of the Company’s obligations under the New Credit Facility. GREC has pledged all the equity interests of the GREC HoldCo as collateral for the New Credit Facility. Regarding the Credit Facility, the Company has entered into five separate interest rate swap agreements as economic hedges. The first swap, with a trade date of June 15, 2017, an effective date of June 30, 2018 and an initial notional amount of $20,900,650, 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 2.26%. The second swap, with a trade date of January 11, 2018, 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 third swap, with a trade date of February 7, 2018, 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%. The fourth swap, with a trade date of January 2, 2019, an effective date of September 30, 2019 and an initial notional amount of $38,203,507, 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 2.69%. The fifth swap, with a trade date of February 19, 2021, an effective date of February 26, 2021 and an initial notional amount of $7,068,965, 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 1.64%. If an event of default shall occur and be continuing under the New Credit Facility, the commitments under the New Credit Facility may be terminated and the principal amount outstanding under the New Credit Facility, together with all accrued unpaid interest and other amounts owing in respect thereof, may be declared immediately due and payable. On December 6, 2019, the Company entered into a $15,000,000 revolving letter of credit facility agreement (“LC Facility”) with Fifth Third Bank. On January 30, 2020, the LC Facility was amended to include an equipment loan, and the amount of $5.6 million was drawn down under the equipment facility loan. On March 18, 2020, a repayment of $1.9 million was made, reducing the outstanding balance of the equipment loan facility. On June 9, 2020, a repayment of the remaining outstanding balance occurred. In October 2020, the LC Facility agreement was amended to increase the aggregate principal amount to $22,500,000. On April 1, 2021, the LC Facility agreement was amended to maintain cash collateral in an amount equal to 100% of the outstanding obligation and the letter of credit fee was reduced from 2.25% to 0.75%. On June 3, 2021, the LC Facility agreement was amended to extend the maturity date to September 4, 2021. On September 3, 2021, the LC Facility agreement was amended to extend the maturity date to September 4, 2022. On September 28, 2021, the LC Facility agreement was amended to increase the aggregate principal amount to $32,500,000. The Company’s borrowings as of December 31, 2021 and December 31, 2020 was as follows: December 31, 2021 December 31, 2020 Aggregate Principal Amount Carrying Value Deferred Term Note Aggregate Principal Carrying Value Deferred Term Note New Credit Facility $ 97,822,841 $ 82,151,509 $ 82,151,509 $ 2,737,887 $ 79,413,622 $ 97,822,841 $ 90,145,500 $ 90,145,500 $ 3,643,846 $ 86,501,654 LC Facility 32,500,000 — — — — 22,500,000 — — — — Total $ 130,322,841 $ 82,151,509 $ 82,151,509 $ 2,737,887 $ 79,413,622 $ 120,322,841 $ 90,145,500 $ 90,145,500 $ 3,643,846 $ 86,501,654 The following table shows the components of interest expense related to the Company's borrowings for the year ended December 31, 2021: For the year ended December 31, Credit Facility commitment fee $ 423,075 Credit Facility loan interest 1,659,715 Amortization of deferred financing costs 905,959 Other* — Total $ 2,988,749 Weighted average interest rate on Credit Facility 1.88 % Weighted average outstanding balance of Credit Facility $ 87,020,554 * Primarily includes financing costs of Credit Facility. The following table shows the components of interest expense related to the Company's borrowings for the year ended December 31, 2020: For the year ended December 31, Credit Facility commitment fee $ 361,373 Credit Facility loan interest 2,081,996 Amortization of deferred financing costs 576,464 Other* — Total $ 3,019,833 Weighted average interest rate on Credit Facility 2.61 % Weighted average outstanding balance of Credit Facility $ 74,831,946 * Primarily includes financing costs of credit facility. The following table shows the components of interest expense related to the Company's borrowings for the year ended December 31, 2019: For the year ended December 31, Credit Facility commitment fee $ 43,087 Credit Facility loan interest 1,360,409 Amortization of deferred financing costs 226,742 Other* 1,182,564 Total $ 2,812,802 Weighted average interest rate on Credit Facility 4.32 % Weighted average outstanding balance of Credit Facility $ 53,753,277 * Primarily includes financing costs of 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 2022 $ 7,954,526 2023 8,098,085 2024 8,245,188 2025 57,853,710 2026 — Thereafter — $ 82,151,509

Members' Equity

Members' Equity	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Members' Equity	Members’ Equity General Pursuant to the terms of the Operating Agreement, the LLC may issue up to 400,000,000 shares, of which 350,000,000 shares are currently designated as Class A, C, I, P-A, P-D, P-S, P-T 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. Refer to Note 5. Related Party Agreements and Transaction Agreements for the 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), which terminated on March 29, 2019, as well as the private offering of Class P-A. Class P-A shares were not offered for sale from March 29, 2019 through October 17, 2020, but were reinstated as of October 18, 2020, along with the commencement of three new share classes: P-D, P-T and P-S. The following table is a summary of the shares issued and repurchased during the period and outstanding as of December 31, 2021: Shares Outstanding as of December 31, 2020 Shares Sold During the Shares Issued Shares Repurchased Shares Transferred During the Period Shares Outstanding as of December 31, 2021 Class A shares 16,844,129 — 413,371 (661,926) (15,016) 16,580,558 Class C shares 2,734,661 — 93,130 (85,828) — 2,741,963 Class I shares 6,526,001 — 231,377 (296,575) (11,310) 6,449,493 Class P-A shares 55,264 711,897 16,432 — — 783,593 Class P-I shares 36,710,292 56,416,202 411,369 (1,493,868) 25,018 92,069,013 Class P-D shares — 197,405 1,143 — — 198,548 Class P-S shares — 46,075,796 248,961 — — 46,324,757 Class P-T shares — 237,124 2,470 — — 239,594 Total 62,870,347 103,638,424 1,418,253 (2,538,197) (1,308) 165,387,519 The following table is a summary of the shares issued and repurchased during the period and outstanding as of December 31, 2020: Shares Outstanding as of December 31, Shares Sold Shares Issued Shares Repurchased Shares Transferred During the Period Shares Outstanding as of December 31, Class A shares 17,210,016 12,964 436,348 (815,199) — 16,844,129 Class C shares 2,718,475 — 95,536 (66,086) (13,264) 2,734,661 Class I shares 6,693,658 5,783 242,963 (429,396) 12,993 6,526,001 Class P-A shares 18,109 37,155 — — — 55,264 Class P-I shares 21,249,352 16,112,855 (296) (651,619) — 36,710,292 Total 47,889,610 16,168,757 774,551 (1,962,300) (271) 62,870,347 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, 2021, 2020 and 2019 were as follows: Class A Class C Class I Class P-A Class P-I Class P-D Shares Class P-S Shares Class P-T Shares Total For the Year Ended December 31, 2021 Proceeds from Shares Sold $ — $ — $ — $ 6,210,692 $ 504,228,647 $ 1,774,641 $413,941,487 $ 2,130,975 $ 928,286,442 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,511,041 $ 768,984 $ 1,964,922 $ 142,773 $ 3,648,652 $ 10,264 $ 2,222,218 $ 22,122 $ 12,290,976 For the Year Ended December 31, 2020 Proceeds from Shares Sold $ 110,970 $ — $ 49,850 $ 323,750 $ 144,310,683 $ — $ — $ — $ 144,795,253 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,755,174 $ 802,289 $ 2,089,430 $ — $ 128 $ — $ — $ — $ 6,647,021 For the Year Ended December 31, 2019 Proceeds from Shares Sold $ 5,256,053 $ 3,651,717 $ 3,773,270 $ 22,875 $ 84,637,482 $ — $ — $ — $ 97,341,397 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,944,111 $ 733,788 $ 2,074,778 $ — $ — $ — $ — $ — $ 6,752,677 As of December 31, 2021, 2020 and 2019, none of the LLC’s preferred shares were issued and outstanding. The Operating Agreement authorizes the LLC's Board of Directors, without approval of any of the members, to increase the number of shares the LLC 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 LLC's Board of Directors. The Operating Agreement also authorizes the LLC's 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 LLC's 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. Related Party Agreements and Transaction Agreements for the terms of the special unit. 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 DRP was amended as of February 1, 2021 to include all share classes. Shares issued pursuant to the DRP will have the same voting rights as shares offered pursuant to the Company's prior public and current private offerings. As of November 30, 2020, pursuant to our Registration Statement on Form S-3D (File No. 333-251021), the Company is offering up to $20,000,000 in Class A, C and I shares to our existing shareholders pursuant to the DRP. Management plans to increase the size of the offering once the maximum offering amount is reached. No dealer manager fees, selling commissions or other sales charges will be paid with respect to shares issued pursuant to the DRP except for distribution fees on Class C, P-S and P-T shares. At its discretion, the Board of Directors may amend, suspend or terminate the DRP. The Board of Directors may also modify or waive the terms of the DRP with respect to certain or all shareholders, in its discretion, to be in the best interests of the Company. 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, 2021, the Company issued 2,438,154 Class A shares, 409,657 Class C shares, 1,152,785 Class I shares, 16,432 Class P-A shares, 411,369 Class P-I shares, 1,143 Class P-D shares, 248,961 Class P-S shares, and 2,470 Class P-T shares for a total of 4,680,971 shares issued under the DRP. As of December 31, 2020, the Company issued 2,024,783 Class A shares, 316,527 Class C shares, and 921,408 Class I shares, for a total of 3,262,718 shares issued under the DRP. Share Repurchase Program The Company offers a share repurchase program (“share repurchase program”) pursuant to which quarterly share repurchases will be conducted to allow members 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 share repurchase program includes numerous restrictions that will limit a shareholder’s ability to sell shares. At the sole discretion of the Board of Directors, the Company may also use cash on hand (including the proceeds from the issuance of new shares), cash available from borrowings and cash from liquidation of investments to repurchase shares. The shareholders’ right to purchase is subject to the availability of funds and the other provisions of the share repurchase program. Additionally, a member must hold his or her shares for a minimum of one year before he or she can participate in the share repurchase program, subject to any of the following special circumstances: (i) the written request of the estate, heir or beneficiary or a deceased shareholder; (ii) a qualifying disability of the shareholder for a non-temporary period of time provided that the condition causing the qualifying disability was not pre-existing on the date that the shareholder became a shareholder; (iii) a determination of incompetence of the shareholder by a state or federal court located in the United States; or (iv) as determined by the Board of Directors, in their discretion, to be in the interests of the Company. If a member has made more than one purchase of shares, the one-year holding period will be calculated separately with respect to each purchase. Through September 30, 2020, quarterly share repurchases were conducted to allow up to approximately 5% of the weighted average number of outstanding shares in any 12-month period to be repurchased by the Company. Effective September 1, 2020, the Company, through approval by its Board of Directors, adopted an amended share repurchase program, pursuant to which the Company will conduct quarterly share repurchases to allow members to sell all or a portion of their shares (of any class) back to the Company. The quarterly share repurchase limits for the Company’s new share repurchase program are set forth below. Quarter Ending Share Repurchase Limit(s) December 31, 2020 During such fiscal quarter, 1.875% of the weighted average number of shares outstanding in the prior four fiscal quarters March 31, 2021 During such fiscal quarter, 2.50% of the weighted average number of shares outstanding in the prior four fiscal quarters June 30, 2021 During such fiscal quarter, 3.75% of the weighted average number of shares outstanding in the prior four fiscal quarters September 30, 2021, and each quarter thereafter During any 12-month period, 20.00% of the weighted average number of outstanding shares During any fiscal quarter, 5.00% of the weighted average number of shares outstanding in the prior four fiscal quarters 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, 2021
Distributions Made to Members or Limited Partners [Abstract]
Distributions	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, P-I, P-D, P-T and P-S shares. 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 P-D P-T P-S 1-Nov-15 31-Jan-16 $ 0.00165 $ 0.00165 $ 0.00165 $ — $ — $ — $ — $ — 1-Feb-16 30-Apr-16 $ 0.00166 $ 0.00166 $ 0.00166 $ — $ — $ — $ — $ — 1-May-16 31-Jul-16 $ 0.00166 $ 0.00166 $ 0.00166 $ 0.00158 $ 0.00158 $ — $ — $ — 1-Aug-16 31-Oct-16 $ 0.00168 $ 0.00168 $ 0.00168 $ 0.00160 $ 0.00160 $ — $ — $ — 1-Nov-16 31-Jan-17 $ 0.00169 $ 0.00164 $ 0.00169 $ 0.00160 $ 0.00160 $ — $ — $ — 1-Feb-17 30-Apr-17 $ 0.00168 $ 0.00164 $ 0.00168 $ 0.00160 $ 0.00160 $ — $ — $ — 1-May-17 31-Jul-17 $ 0.00167 $ 0.00163 $ 0.00167 $ 0.00160 $ 0.00158 $ — $ — $ — 1-Aug-17 31-Oct-17 $ 0.00167 $ 0.00163 $ 0.00167 $ — $ 0.00159 $ — $ — $ — 1-Nov-17 31-Oct-18 $ 0.00167 $ 0.00163 $ 0.00167 $ — $ 0.00158 $ — $ — $ — 1-Nov-18 30-Apr-20 $ 0.00167 $ 0.00163 $ 0.00167 $ 0.00165 $ 0.00158 $ — $ — $ — 1-May-20 30-Nov-20 $ 0.00152 $ 0.00149 $ 0.00152 $ 0.00153 $ 0.00158 $ — $ — $ — 1-Dec-20 — $ 0.00152 $ 0.00149 $ 0.00152 $ 0.00152 $ 0.00158 $ 0.00158 $ 0.00158 $ 0.00158 The following table reflects the distributions declared during the year ended December 31, 2021: Pay Date Paid in Cash Values of Shares Issued under DRP Total February 1, 2021 $ 2,555,800 $ 538,241 $ 3,094,041 March 4, 2021 3,063,308 487,868 3,551,176 April 1, 2021 4,783,092 523,715 5,306,807 May 3, 2021 4,733,419 565,208 5,298,627 June 1, 2021 4,762,355 886,124 5,648,479 July 1, 2021 4,709,348 960,096 5,669,444 August 2, 2021 5,217,796 1,071,227 6,289,023 September 1, 2021 5,423,345 1,145,375 6,568,720 October 1, 2021 5,516,811 1,229,494 6,746,305 November 1, 2021 5,946,262 1,463,710 7,409,972 December 1, 2021 5,938,698 1,662,579 7,601,277 January 3, 2022 6,174,878 1,755,921 7,930,799 Total $ 58,825,112 $ 12,289,558 $ 71,114,670 The following table reflects the distributions declared during the year ended December 31, 2020: Pay Date Paid in Cash Value of Shares Issued under DRP Total February 3, 2020 $ 1,788,542 $ 603,697 $ 2,392,239 March 2, 2020 1,733,243 561,984 2,295,227 April 2, 2020 1,890,493 593,200 2,483,693 May 1, 2020 1,838,747 578,258 2,417,005 June 1, 2020 1,829,752 551,563 2,381,315 July 1, 2020 1,827,301 532,220 2,359,521 August 3, 2020 2,133,835 548,210 2,682,045 September 1, 2020 2,157,292 546,746 2,704,038 October 1, 2020 2,178,934 529,183 2,708,117 November 2, 2020 2,285,549 539,435 2,824,984 December 1, 2020 2,281,547 524,274 2,805,821 January 1, 2021 2,447,041 537,476 2,984,517 Total $ 24,392,276 $ 6,646,246 $ 31,038,522 The following table reflects the distributions declared during the year ended December 31, 2019: Pay Date Paid in Cash Value of Shares Issued under DRP Total February 1, 2019 $ 1,317,325 $ 583,571 $ 1,900,896 March 1, 2019 1,247,614 552,615 1,800,229 April 1, 2019 1,452,785 611,200 2,063,985 May 1, 2019 1,438,057 600,614 2,038,671 June 3, 2019 1,553,801 622,584 2,176,385 July 1, 2019 1,764,525 383,627 2,148,152 August 1, 2019 1,850,929 393,237 2,244,166 September 2, 2019 1,664,451 613,333 2,277,784 October 1, 2019 1,647,967 589,581 2,237,548 November 1, 2019 1,716,132 609,283 2,325,415 December 2, 2019 1,693,670 587,119 2,280,789 January 1, 2020 1,784,956 605,129 2,390,085 Total $ 19,132,212 $ 6,751,893 $ 25,884,105 All distributions paid for the year ended December 31, 2021 are expected to be reported as a return of capital to members for tax reporting purposes, and all distributions paid for the years ended December 31, 2020 and 2019 were reported as a return of capital to members for tax purposes. Cash distributions paid during the periods presented were funded from the following sources noted below: For the year ended December 31, For the year ended December 31, For the year ended December 31, Cash from operations $ — $ 1,645,856 $ 4,213,803 Offering proceeds 55,097,266 22,149,268 14,393,447 Total cash distributions $ 55,097,266 $ 23,795,124 $ 18,607,250 The Company expects to continue to fund distributions from a combination of cash from operations as well as other external financing sources. Due to the Company’s change in investment portfolio composition to include a greater percentage of pre-operational assets, a significant amount of distributions will continue to be funded from other external financing sources.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	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, 2021, 2020 and 2019 is composed of the following: Current Deferred Total Year Ended December 31, 2021 U.S. federal $ — $ 5,075,307 $ 5,075,307 State and local — 2,946,388 2,946,388 Foreign jurisdiction — — — Provision for income taxes $ — $ 8,021,695 $ 8,021,695 Change in valuation allowance — 817,262 817,262 Provision for income taxes, net $ — $ 8,838,957 $ 8,838,957 Current Deferred Total Year Ended December 31, 2020 U.S. federal $ — $ 9,454,902 $ 9,454,902 State and local — 2,716,238 2,716,238 Foreign jurisdiction — — — Provision for income taxes $ — $ 12,171,140 $ 12,171,140 Change in valuation allowance — (803,627) (803,627) Provision for income taxes, net $ — $ 11,367,513 $ 11,367,513 Current Deferred Total Year Ended December 31, 2019 U.S. federal $ — $ 5,658,918 $ 5,658,918 State and local — 382,931 382,931 Foreign jurisdiction — — — Provision for income taxes $ — $ 6,041,849 $ 6,041,849 Change in valuation allowance — 1,231,693 1,231,693 Provision for income taxes, net $ — $ 7,273,542 $ 7,273,542 The principal differences between our effective tax rate on operations and the U.S. federal statutory income tax rate are as follows: 2021 Percentage 2020 Percentage 2019 Percentage Taxes at statutory U.S. federal income tax rate $ 10,890,547 21.0 % $ 11,532,973 21.0 % $ 7,125,202 21.0 % Permanent differences (GREC LLC and other) 347,555 0.7 % (1,396,678) (2.5) % 1,387,056 4.1 % State income taxes, net of federal benefit 2,253,655 4.3 % 2,623,353 4.8 % 1,504,182 4.4 % Write off state credits 334,079 0.6 % 634,229 1.2 % — — % Rate changes — — % — — % (1,121,251) (3.3) % Return to provision and other adjustments (1,850,554) (3.6) % (257,314) (0.5) % (2,606,695) (7.7) % Federal tax credits (3,953,587) (7.6) % (965,423) (1.8) % (246,645) (0.7) % Change in valuation allowance 817,262 1.6 % (803,627) (1.5) % 1,231,693 3.6 % Actual provision for income taxes $ 8,838,957 17.0 % $ 11,367,513 20.7 % $ 7,273,542 21.4 % Deferred tax assets (liabilities) have been classified on the accompanying Consolidated Statements of Assets and Liabilities as of December 31, 2021 and 2020 as follows: 2021 2020 Amortization $ 42,799 $ 48,179 Disallowed interest 4,731,734 — Net operating losses 60,652,197 39,397,236 Federal and state tax credits 11,996,064 7,120,567 Unrealized gains (102,617,534) (63,739,027) Deferred tax liabilities $ (25,194,740) $ (17,173,045) Less: valuation allowance (1,512,356) (695,093) Deferred tax liabilities, net $ (26,707,096) $ (17,868,138) As of December 31, 2021, the Company has federal net operating loss carryforwards of approximately $228,673,606. Approximately $179,166,225 of the carryforward is indefinite lived with the remaining $49,507,381 expiring in 2034 through 2037. Federal tax credit carryforwards are approximately $11,996,064 and expire in 2035 through 2041. State net operating loss and credit carryforwards total approximately $234,637,050 and nil, respectively. Approximately $28,357,352 of the net operating loss carryforward is indefinite lived with the remaining $206,279,698 expiring in 2022 through 2041 with earlier years expirations reserved by a valuation allowance. As new tax legislation was enacted on December 22, 2017, commonly referred to as the Tax Cuts and Jobs Act (the “TCJA”), the Company recognized the effect of any material changes in the TCJA in the determination of deferred tax assets and liabilities for the year ending December 31, 2018. The major aspects of the TCJA that 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 in 2017; and 2) a deduction of interest expense up to only 30% (50% for 2019 and 2020) of “adjusted taxable income” (as defined in the TCJA) and the ability of post-2019 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 span 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, 2021 has applied a partial valuation allowance of $1,512,356 against the deferred tax assets that are not more likely than not to be utilized during their carryforward period. This represents an $817,262 net increase as compared to valuation allowances of $695,093 for the year ended December 31, 2020. The net increase is due to changes in forecasted taxable income and deferred tax liabilities reversing in the carryforward periods, offset in part by decreases due to previously reserved and expired state investment tax credits. The Company follows the authoritative guidance on accounting for uncertainty in income taxes and has concluded that it has no material uncertain tax positions to be recognized as of December 31, 2021. The Company assessed its tax positions and filings for all open tax years as of December 31, 2021 for all federal and state tax jurisdictions for the years 2014 through 2021. The results of this assessment are included in the Company’s tax provision and deferred tax assets as of December 31, 2021. The effective tax rate for the year ended December 31, 2021 is 17.0% . The primary items giving rise to the difference between the 21.0% statutory rate and the 17.0% effective tax rate are primarily state taxes, 2020 provision to return adjustments and federal tax credits. The effective tax rate for the year ended December 31, 2020 i s 20.7% . The primary items giving rise to the difference between the 21.0% s tatutory rate and the 20.7% effective tax are primarily state taxes, 2019 provision to return adjustments and federal tax credits. The effective tax rate for the year ended December 31, 2019 i s 21.4% . The primary items giving rise to the difference between the 21.0% s tatutory rate and the 21.4% effective tax are primarily state taxes, 2018 provision to return adjustments and federal tax credits.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings The Company may become involved in legal proceedings, administrative proceedings, claims and other litigation that arise in the ordinary course of business. Individuals and interest groups may sue to challenge the issuance of a permit for a renewable energy project or seek to enjoin construction of a wind energy project. In addition, we may be subject to legal proceedings or claims contesting the construction or operation of our renewable energy projects. In defending ourselves in these proceedings, we may incur significant expenses in legal fees and other related expenses, regardless of the outcome of such proceedings. Unfavorable outcomes or developments relating to these proceedings, such as judgments for monetary damages, injunctions or denial or revocation of permits, could have a material adverse effect on our business, financial condition and results of operations. In addition, settlement of claims could adversely affect our financial condition and results of operations. As of December 31, 2021, management is not aware of any legal proceedings that might have a significant adverse impact on the Company. Pledge of Collateral and Unsecured Guarantee of Loans to Subsidiaries Pursuant to various project loan agreements between the operating entities of the Company, subsidiary holding companies and various lenders, the operating entities and the subsidiary holding companies have pledged all solar operating assets as well as the membership interests in various operating subsidiaries as collateral for the term loans with maturity dates ranging from June 2022 through September 2049. Investment in To-Be-Constructed Assets and Membership Interest Purchase Commitments Pursuant to various engineering, procurement and construction contracts to which 42 entities of the Company are individually a party, the entities, and indirectly the Company, have committed an outstanding balance of approximately $540.2 million to complete construction of the facilities. Based upon current construction schedules, the expectation is that these commitments will be fulfilled in 2022 into 2024. In addition, pursuant to various membership interest purchase agreements to which the Company’s operating entities are individually a party, the operating entities, and indirectly the Company, have committed an outstanding balance of approximately $1,038.2 million to complete the closing pursuant to all conditions being met under the membership interest purchase agreements as of December 31, 2021. The Company plans to use debt and tax equity financing as well as cash on hand to fund such commitments. Unsecured Guarantee of Subsidiary Renewable Energy Credit (“REC”) Forward Contracts For the majority of the forward REC contracts currently effective as of December 31, 2021 where a subsidiary of the Company is the principal, the Company has provided an unsecured guarantee related to the delivery obligations. The amount of the unsecured guaranty related to REC delivery performance obligations is nil as of December 31, 2021. Pledge of Parent Company Guarantees Pursuant to various contracts in which the Company has provided a parent company guarantee, excluding those discussed above, the operating entities, and indirectly the Company, have committed an additional $114.4 million in unsecured guarantees in the event of a default at the underlying entity, as of December 31, 2021. See Note 2. Significant Accounting Policies and Note 5. Related Party Agreements and Transaction Agreements for an additional discussion of the Company’s commitments and contingencies.

Financial Highlights

Financial Highlights	12 Months Ended
	Dec. 31, 2021
Financial Highlights [Abstract]
Financial Highlights	Financial Highlights The following is a schedule of the financial highlights of the Company attributed to Class A, C, I, P-A, P-I, P-D, P-S, and P-T shares for the year ended December 31, 2021: For the year ended December 31, 2021 Class A Shares Class C Shares Class I Shares Class P-A Shares Class P-I Shares Class P-D Shares Class P-S Shares Class P-T Shares Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.61 $ 8.35 $ 8.61 $ 8.70 $ 9.02 $ 8.96 $ 8.84 $ 8.57 Net investment income 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 Net realized and unrealized gain on investments and swap contracts 0.46 0.46 0.46 0.46 0.46 0.46 0.46 0.46 Change in translation of assets and liabilities denominated in foreign currencies (3) — — — — — — — — (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (0.14) (0.14) (0.14) (0.14) (0.14) (0.14) (0.14) (0.14) Net increase in net assets attributed to common members 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 Shareholder distributions: Distributions from net investment income — — — — — — — — Distributions from offering proceeds (0.56) (0.54) (0.56) (0.56) (0.58) (0.53) (0.53) (0.53) Other (2) (0.07) (0.02) (0.07) 0.10 0.02 0.03 0.09 0.14 Net decrease in members’ equity attributed to common shares (0.63) (0.56) (0.63) (0.46) (0.56) (0.50) (0.44) (0.39) Net asset value for common shares at end of period $ 8.32 $ 8.13 $ 8.32 $ 8.58 $ 8.80 $ 8.80 $ 8.74 $ 8.52 Common members’ equity at end of period $ 137,994,947 $ 22,290,310 $ 53,665,823 $ 6,721,670 $ 810,046,418 $ 1,747,603 $ 404,803,246 $ 2,040,615 Common shares outstanding at end of period 16,580,558 2,741,963 6,449,493 783,593 92,069,013 198,548 46,324,757 239,594 Ratio/supplemental data for common shares (annualized) Total return attributed to common shares based on net asset value 3.29 % 4.03 % 3.29 % 5.18 % 4.13 % 3.81 % 4.98 % 5.48 % Ratio of net investment income to average net assets 0.25 % 0.26 % 0.25 % 0.23 % 0.24 % 0.22 % 0.24 % 0.24 % Ratio of operating expenses to average net assets 3.68 % 3.77 % 3.67 % 3.34 % 3.45 % 3.28 % 3.53 % 3.48 % Portfolio turnover rate 0.98 % 0.98 % 0.98 % 0.98 % 0.98 % 0.98 % 0.98 % 0.98 % (1) The per share data for Class A, C, I, P-A, P-I, P-D, P-S, and P-T shares were derived by using the weighted average shares outstanding during the year ended December 31, 2021, which were 16,741,429, 2,751,320, 6,552,391, 479,717, 67,370,914, 129,799, 32,304,342, and $128,948, 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) Amount is less than $0.01 per share. The following is a schedule of the financial highlights of the Company adjusted for the effect of the revisions discussed in Note 12 attributed to Class A, C, I, P-A and P-I shares for the year ended December 31, 2020. For the year ended December 31, 2020 Class A Class C Class I Class P-A Class P-I Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.40 $ 8.23 $ 8.40 $ 8.44 $ 8.73 Net investment income (2) 0.16 0.16 0.16 0.16 0.16 Net realized and unrealized gain on investments and swap contracts, net of incentive allocation to special unitholder 0.99 0.99 0.99 0.99 0.99 Change in translation of assets and liabilities denominated in foreign currencies (3) — — — — — (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (0.34) (0.34) (0.34) (0.34) (0.34) Net increase in net assets attributed to common members 0.81 0.81 0.81 0.81 0.81 Shareholder distributions: Distributions from net investment income (0.03) (0.03) (0.03) (0.03) (0.03) Distributions from offering proceeds (0.54) (0.53) (0.54) (0.54) (0.55) Offering costs and deferred sales commissions — (0.09) — — — Other (4) (0.03) (0.04) (0.03) 0.02 0.06 Net decrease in members’ equity attributed to common shares (0.60) (0.69) (0.60) (0.55) (0.52) Net asset value for common shares at end of period $ 8.61 $ 8.35 $ 8.61 $ 8.70 $ 9.02 Common members’ equity at end of period $ 144,978,110 $ 22,836,128 $ 56,156,327 $ 480,799 $ 331,100,495 Common shares outstanding at end of period 16,844,129 2,734,661 6,526,001 55,264 36,710,292 Ratio/supplemental data for common shares (annualized) Total return attributed to common shares based on net asset value 9.56 % 8.49 % 9.51 % 10.12 % 10.23 % Ratio of net investment income to average net assets 1.92 % 1.97 % 1.92 % 1.90 % 1.84 % Ratio of operating expenses to average net assets before performance participation fee waiver 5.12 % 5.26 % 5.13 % 5.06 % 4.91 % Ratio of operating expenses to average net assets after performance participation fee waiver 4.96 % 5.09 % 4.96 % 4.90 % 4.75 % Portfolio turnover rate 12.35 % 12.35 % 12.35 % 12.35 % 12.35 % (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, 2020, which were 17,188,603, 2,740,846, 6,672,886, 19,632, and 27,435,653, respectively. (2) Does not reflect any incentive fees that may be payable to the Special Unitholder. (3) Amount is less than $0.01 per share. (4) 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. The following is a schedule of the financial highlights of the Company attributed to Class A, C, I, P-A and P-I shares for the year ended December 31, 2019. For the year ended December 31, 2019 Class A Class C Class I Class P-A Class P-I Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.40 $ 8.21 $ 8.40 $ 8.40 $ 8.62 Net investment income (2) 0.17 0.17 0.17 0.17 0.17 Net realized and unrealized gain (loss) on investments and swap contracts, net of incentive allocation to special unitholder 0.68 0.68 0.68 0.68 0.68 Change in translation of assets and liabilities denominated in foreign currencies (3) — — — — — (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (0.24) (0.24) (0.24) (0.24) (0.24) Net increase in net assets attributed to common members 0.61 0.61 0.61 0.61 0.61 Shareholder distributions: Distributions from net investment income (0.10) (0.10) (0.10) (0.10) (0.10) Distributions from offering proceeds (0.51) (0.50) (0.51) (0.51) (0.48) Offering costs and deferred sales commissions (0.02) (0.05) (0.03) — — Other (4) 0.02 0.06 0.03 0.04 0.08 Net decrease in members’ equity attributed to common shares (0.61) (0.59) (0.61) (0.57) (0.50) Net asset value for common shares at end of period $ 8.40 $ 8.23 $ 8.40 $ 8.44 $ 8.73 Common members’ equity at end of period $ 144,540,863 $ 22,364,784 $ 56,217,673 $ 152,879 $ 185,463,453 Common shares outstanding at end of period 17,210,016 2,718,475 6,693,658 18,109 21,249,352 Ratio/supplemental data for common shares (annualized) Total return attributed to common shares based on net asset value 7.30 % 7.54 % 7.04 % 5.66 % 8.15 % Ratio of net investment income to average net assets 2.01 % 2.02 % 1.99 % 2.00 % 1.95 % Ratio of operating expenses to average net assets 4.01 % 4.04 % 3.98 % 3.99 % 3.90 % Portfolio turnover rate 14.04 % 14.04 % 14.04 % 14.04 % 14.04 % (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, 2019, which were 17,270,555, 2,645,713, 6,642,314 17,841, and 17,211,763, respectively. (2) Does not reflect any incentive fees that may be payable to the Special Unitholder. (3) Amount is less than $0.01 per share. (4) Represents the impact of the 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.

Revisions to Prior Period Finan

Revisions to Prior Period Financial Statements	12 Months Ended
	Dec. 31, 2021
Accounting Changes and Error Corrections [Abstract]
Revisions to Prior Period Financial Statements	Revisions to Prior Period Financial Statements As disclosed in the 2020 Form 10-K, during the year ended December 31, 2020, we identified errors related to deferred tax assets included in our consolidated financial statements for the quarterly period ending September 30, 2016 and each subsequent quarterly and annual period through the quarterly period ending June 30, 2020. We concluded that our previously issued consolidated financial statements were not materially misstated as a result of these errors, but the correction would be material to the current period Consolidated Statements of Operations. As such, we revised our previously reported quarterly and annual consolidated financial statements for the periods since September 30, 2016. The historical periods presented in this Annual Report on Form 10-K have been revised with corresponding adjustment to accumulated gains (losses) on the Consolidated Statements of Assets and Liabilities to correct for these errors. The errors resulted in an overstatement of our deferred tax assets, net of allowance, on the Consolidated Statements of Assets and Liabilities and also affected the (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts on the Consolidated Statements of Operations. These errors had no impact on our cash flows, and as such, did not impact our Consolidated Statements of Cash Flows. The following tables set forth the effect of the revisions on each of the individual affected line items in the consolidated financial statements: For the year ended December 31, 2019 As Previously Reported Adjustments As Revised Consolidated Statement of Operations data (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts $ (7,926,882) $ (2,535,091) $ (10,461,973) Net increase in net assets resulting from operations 34,568,111 (2,535,091) 32,033,020 Net increase in net assets attributed to common members 29,297,441 (2,535,091) 26,762,350 Common stock per share information - basic and diluted Net increase in net assets attributed to common members $ 0.67 $ (0.06) $ 0.61

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	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 and for the year ended December 31, 2021 other than that disclosed below. As of March 17, 2022, the Company closed to new equity capital and terminated its offering of shares except pursuant to the DRP. This close allows the Company to evaluate strategic directions for its portfolio. The Company also intends to use the period to solidify its portfolio, bringing more of its construction assets online and optimizing the financing of its portfolio.

COVID-19 Impact

COVID-19 Impact	12 Months Ended
	Dec. 31, 2021
Unusual or Infrequent Items, or Both [Abstract]
COVID-19 Impact	COVID-19 Impact In March of 2020, the United States declared a National Emergency concerning the COVID-19 outbreak. This came after the World Health Organization declared the virus a global pandemic on March 11, 2020. Since the outbreak of COVID-19 in the United States, the Company has generally been able to conduct its business despite the turmoil in markets and the shuttering of many businesses across the country. We have and will continue to assess the current and future business risks related to COVID-19 as new information becomes available, including any potential performance risk of our PPA and construction counterparties. As of the date of the filing, we are not aware of any material impact to our financial results.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
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, GREC HoldCo, and GREC Administration LLC and Danforth Shared Services LLC, both of which provide administrative services to the Company. 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 its investments , including investments in the underlying operating entities, at fair value with changes in fair value recognized in earnings. Additionally, the Company will not apply the 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, 2021 consolidated financial statements has been prepared by management and, in the opinion of management, contains all adjustments and eliminations necessary for a fair presentation in accordance with GAAP.
Basis of Consolidation	Basis of Consolidation As provided under Regulation S-X and ASC Topic 946, the Company will generally not consolidate its investment in a company other than a wholly owned investment company or controlled operating company whose business consists of providing services to the Company. Accordingly, the Company consolidates in its consolidated financial statements the accounts of certain wholly owned subsidiaries that meet the criteria. All significant intercompany balances and transactions have been eliminated in consolidation.
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. As of December 31, 2021, the Company had $92,179,779 in cash presented on the Consolidated Statements of Assets and Liabilities. As of December 31, 2021, the Company did not hold any cash equivalents.
Restricted Cash	Restricted Cash Restricted cash consists of cash accounts or letters of credit that are restricted for use on specific investments. As of December 31, 2021, restricted cash included $29,683,613 of collateral related to the ongoing construction of certain of the Company's pre-operational assets.
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 Foreign currency translation 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 to be 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 Measurement (“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 that the Company’s Board of Directors has reviewed and approved. To the extent that such market data is available, t he Company will use observable market data to estimate the fair value of investmen ts. 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 . These methodologies incorporate the Company’s assumptions about the factors that a market participant would use to value the asset. The Company considers investments in money market funds to be short-term investments. Short-term investments are stated at cost, which approximates fair value. For investments for which quoted market prices are not available, which comprise most of our investment portfolio, fair value is estimated by using the cost, income, or market approach. The income approach assumes that value is created by the expectation of future benefits, discounted by a risk premium, to calculate a current cash value. This estimate is the fair value: the amount an investor would be willing to pay to receive those future benefits. The market approach compares either recent comparable transactions to the investment or an offer to purchase an investment based upon a qualified bid: a signed term sheet and/or a signed purchase agreement. Adjustments to proposed prices are made to account for the probability of the deal closing, changes between proposed and executed terms, and any dissimilarity between the comparable transactions and their underlying investments. If multiple bids are qualified in the same valuation period, a blended market approach will be calculated. Prior to the second quarter of 2020, fair value for pre-operational assets was approximated using the cost approach. Beginning in the second quarter of 2020, our Advisor expanded the criteria whereby certain pre-operational assets are identified and qualified for the income approach, rather than the cost approach, for approximating fair value. Currently, we consider all owned assets that are fully construction ready with no impediments to begin construction and where the costs to complete such projects are well understood for the income approach. The fair value of such eligible projects is determined based upon a discounted cash flow methodology. If the portfolio has any significant portion of value that remains subject to negotiation or contract or if other significant risks to complete the project exist, the investment may be held at cost, as an approximation of fair value. These valuation methodologies involve a significant degree of judgment by management. In determining the appropriate fair value of an investment using these approaches, the most significant information and assumptions 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 mergers and acquisitions, the principal market and enterprise values and 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 non-occurrence 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 ("NAV") 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. For purposes of calculating our NAV, we carry all liabilities at cost.
Earnings per Share	Earnings 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 members 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.
Revenue Recognition	Revenue Recognition To the extent the Company expects to collect such amounts, interest income is recorded on an accrual basis. If there is reason to doubt an ability to collect such interest, interest receivable on loans and debt securities is not accrued for accounting purposes. 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 90 days or more past due, 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 regarding collectability. 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 when dividends are declared and determined that collection is probable. The timing and amount of dividend income is determined on at least a quarterly basis. This process includes an analysis at the individual project company level based on cash available from operations and working capital needed for the project company operations. Dividend income from our privately held, equity investments is recognized when approved. On a quarterly basis at a minimum, dividends received from the Company’s project companies, which generally reflect net cash flow from operations, are declared, accrued and paid.
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 Without regard to unrealized appreciation or depreciation previously recognized, 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. 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	Payment-in-Kind For loans and debt securities with contractual payment-in-kind interest, if the fair value of the investment indicates that such interest is collectible, any interest will be added to the principal balance of such investments and be recorded as income.
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
Organization and Offering Costs	Organization and Offering Costs Organization and offering costs (“O&O costs”), other than sales commissions and the dealer manager fee, were initially paid by our Advisor and/or dealer manager on behalf of the Company in connection with its formation and the offering of its shares pursuant to now-terminated Registration Statements on Form S-1 (File No. 333-178786-01 and File No. 333-211571, respectively). The Company was obligated to reimburse our Advisor for O&O costs that it incurred on behalf of the Company, in accordance with the advisory agreement. However, with respect to the Company’s public offerings, the aggregate of selling commissions, dealer manager fees and the other O&O costs borne by the Company was not to exceed 15% of gross offering proceeds. Offering costs incurred by our Advisor in conjunction with the offering of shares of Class P-A, P-S, P-T and P-D under our private placement memoranda are subject to the reimbursement by the Company up to 0.50% (50 basis points) of gross offering proceeds for each such class of shares.
Financing Costs	Financing Costs Financing costs incurred by the Company for the issuance of debt liabilities are deferred and amortized using the straight-line method over the life of the debt liability. Financing costs related to debt liabilities incurred by the Company are presented on the Consolidated Statements of Assets and Liabilities as a direct deduction from the carrying amount of that debt liability.
Return of Capital Receivable	Return of Capital ReceivableFor operational assets, if the project company has inadequate cash to fund day-to-day expenses, the Company will loan funds to that project company through an investment. Once the project company has adequate cash, they will repay the loan by sending a return of capital distribution.
Capital Gains Incentive Allocation and Distribution	Capital Gains Incentive Allocation and Distribution Pursuant to the terms of the LLC’s Third Amended and Restated Limited Liability Company Agreement, a capital gains incentive allocation was earned by GREC Advisors, LLC (the “Special Unitholder”), 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 LLC’s Third Amended and Restated Limited Liability Company Agreement did not contemplate the inclusion of unrealized gains in the calculation of the capital gains incentive allocation, the Company included unrealized gains in the calculation of the capital gains incentive distribution. This amount reflected the incentive distribution that would have been 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 Special Unitholder was not entitled to an incentive distribution with respect to unrealized gains unless and until such gains were realized. Thus, on each date that net asset value was calculated, the Company calculated the capital gains incentive distribution as if it were due and payable as of the end of such period and reflected as an allocation of equity between common members and the Special Unitholder. The capital gains incentive allocation was eliminated with the adoption of the Fourth Amended and Restated Limited Liability Company Agreement in August 2020 (as amended in November 2020, the “Operating Agreement”). A one-time distribution (settlement) in the amount of $4,749,000 was mutually agreed upon by the Company and the Special Unitholder. The remaining $4,193,559 was written off by reclassifying the Special Unitholder’s equity into common members' equity upon adoption of the Operating Agreement. The $(1,154,308) is presented on the Consolidated Statements of Operations as the Net decrease in net assets attributed to special unitholder for the year ended December 31, 2020. The Special unitholder’s equity on the Consolidated Statements of Assets and Liabilities as of December 31, 2020 is nil.
Performance Participation Fee	Performance Participation Fee Under the Operating Agreement, the incentive fee payable by the Company was simplified to be structured with two components: the performance participation fee and the liquidation performance participation fee (each as defined in Note 5. Related Party Agreements and Transaction Agreements). The performance participation fee is based on the Company's total return amount during the relevant calculation period. The calculation of the performance participation fee is further detailed in Note 5. Related Party Agreements and Transaction Agreements. The performance participation fee is accounted for and classified as an operating expense and reflected as the performance participation fee on the Consolidated Statements of Operations. Under the new Operating Agreement, a performance participation fee payable of $3,359,269 and $3,540,052 was recorded as of December 31, 2021 and December 31, 2020, respectively, in the Consolidated Statements of Assets and Liabilities. The Performance Participation Fee recorded on the Consolidated Statements of Operations for the years ended December 31, 2021 and 2020 is $4,672,078 and $4,571,927, respectively. As disclosed in the 2020 Form 10-K, a result of the revisions to prior period financial statements discussed in Note 12. Revisions to Prior Period Financial Statements, there were a certain amount of proceeds paid under the Company’s share repurchase program that otherwise would not have been paid due to the misstatement historically impacting the Company’s share repurchase price. As a result, the Special Unitholder waived $(747,602) of performance participation fees for the year ended December 31, 2020, which is recorded as Performance participation fee waiver in the Consolidated Statements of Operations.
Deferred Sales Commissions	Deferred Sales CommissionsThe 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 shares sold with a reduced front-end load sales charge and a trail fee. The costs expected to be incurred at the time of the sale of the Class C shares are recorded as a liability on the date of sale and represents the aggregate amount due for such costs over the period beginning at the time of sale and ending on the earlier date of (1) when the maximum amount of sales commission and related compensation is reached under regulatory regulations; (2) the date which approximates an expected liquidity event for the Company; or (3) the expected holding period of the investment. The costs expected to be incurred at the time of the sale of the Class P-T and Class P-S shares are recorded as a liability on the date of sale and represents the aggregate amount due for such costs over the period beginning at the time of sale and ending on the earlier date of (1) the date which approximates an expected liquidity event for the Company; or (2) the expected holding period of the investment. The estimated amount of the liability can be updated as management’s assumption surrounding an expected liquidity event changes or if the maximum of sales-related commissions and costs under regulatory regulations is attained.
Reclassifications	Reclassifications Certain prior year amounts have been reclassified to conform with current year presentation. These reclassifications had no impact on prior periods’ results. Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within the Consolidated Schedules of Investments.
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. On the expiration, termination or settlement of a derivatives contract, the Company generally records a gain or loss. When there is a master netting agreement with a financial institution, any gain or loss on interest rate swaps with the same financial institution are netted for financial statement presentation. 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 Statements of Assets and Liabilities. As appropriate, the Company minimizes counterparty credit risk through credit monitoring procedures and managing margin and collateral requirements. During December 2021, the Company entered into an agreement with Canadian Imperial Bank of Commerce for the purpose of hedging our investment in a pre-operating solar facility that the Company has contracted to acquire. The derivative instrument has a trade date of December 15, 2021, an effective date of March 31, 2024 and an initial notional amount of $284,692,696. The fixed rate is 1.604%. Per the terms of the agreement, the swap is contingent on the transaction closing. While the transaction has not yet closed, in order to lock in the terms, the Company made a payment for the amount of $5,000,000 to be maintained as cash collateral. As of December 31, 2021, this cash collateral is recorded in Other assets in the Consolidated Statements of Assets and Liabilities. Regarding our investment in the Canadian Northern Lights assets included in the Other Commercial Solar Portfolios, we have foreign currency risk related to our revenue and operating expenses, which are denominated in Canadian Dollars as opposed to U.S. Dollars.
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. To the extent of the Company’s earnings and profits, and the payment of the distributions would not be deductible by the LLC, distributions to members from the LLC would constitute dividend income taxable to such members. 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. As of December 31, 2021, including territories and provinces, the portfolio resides in 36 jurisdictions. 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 has 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, 2021 for all U.S. federal and state tax jurisdictions for the years 2014 through 2021 . The results of this assessment are included in the Company’s tax provision and deferred tax assets as of December 31, 2021.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements 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. Beginning on January 1, 2020, we have adopted ASU 2018-13 in our consolidated financial statements and disclosures. In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting,” which provides companies with optional financial reporting alternatives to reduce the cost and complexity associated with the accounting for contracts and hedging relationships affected by reference rate reform. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022. An entity may elect to apply the amendments for contracts as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020. As of December 31, 2021, we have not elected to apply the optional amendments and are currently evaluating the impact of the ASU and the effect on our consolidated financial statements.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following information sets forth the computation of the weighted average basic and diluted net increase in net assets attributed to common members per share and net investment income per share for the years ended December 31, 2021, 2020 and 2019, respectively. For the year ended December 31, For the year ended December 31, For the year ended December 31, Basic and diluted Net investment income $ 2,655,809 $ 8,807,687 $ 7,277,091 Net increase in net assets attributed to common members $ 43,020,789 $ 43,551,407 $ 26,762,350 Net investment income per share $ 0.02 $ 0.16 $ 0.17 Net increase in net assets attributed to common members per share $ 0.34 $ 0.81 $ 0.61 Weighted average common shares outstanding 126,458,860 54,057,620 43,788,187
Schedule of Organization and Offering Costs	The following table provides information in regard to the status of O&O costs related to the continuous offering as of December 31, 2021: December 31, 2021 Total O&O costs incurred by the Advisor and dealer manager $ 1,058,658 Amounts previously reimbursed to the Advisor/dealer manager by the Company 451,048 Amounts accrued and/or payable to Advisor by the Company 607,610 Amounts of the contingent liability subject to payment by the Company only upon adequate gross offering proceeds being raised $ — The following table provides information in regard to the status of O&O costs related to the terminated offering as of December 31, 2020: December 31, Total O&O costs incurred by the Advisor and dealer manager $ 94,486 Amounts previously reimbursed to the Advisor/dealer manager by the Company — Amounts accrued and/or payable to Advisor by the Company 1,751 Amounts of the contingent liability subject to payment by the Company only upon adequate gross offering proceeds being raised $ 92,735 Type of Compensation and Recipient Determination of Amount Base Management Fees — Advisor The base management fee payable to the Advisor will be calculated at a monthly rate of 0.167% (2.00% annually) of our gross assets (including amounts borrowed up to $50,000,000) until gross assets exceed $800,000,000. The base management fee monthly rate will decrease to 0.14583% (1.75% annually) for gross assets between $800,000,001 to $1,500,000,000 and 0.125% (1.50% annually) for gross assets greater than $1,500,000,000. For services rendered under the advisory agreement, the base management fee will be payable monthly in arrears, or more frequently as authorized under the advisory agreement. 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 prorated. The base management fee may be deferred or waived, in whole or in 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. On July 1, 2021, the Company entered into the Fourth Amended and Restated Advisory Agreement with the Advisor. Effective July 1, 2021, the base management fee payable to the Advisor is calculated at a monthly rate of 0.167% (2.00% annually) of the net assets until the net assets exceed $800,000,000. The base management fee monthly rate will decrease to 0.14583% (1.75% annually) for net assets between $800,000,001 to $1,500,000,000 and to 0.125% (1.50% annually) for net assets greater than $1,500,000,000. Incentive Allocation and Distribution — Special Unitholder (effective through March 31, 2020) Under the LLC's Third Amended and Restated Limited Liability Company Agreement dated June 27, 2014, the incentive allocation and distribution had three parts: Income Incentive Distribution, Capital Gains Incentive Distribution and the Liquidation Incentive Distribution. The features of this incentive fee structure were as follows: ● The Income Incentive Distribution provided for the Special Unitholder, as a member of the LLC, to receive, on a quarterly basis, a cash distribution equal to a percentage of the LLC’s net investment income (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) for each quarter, in excess of a specified hurdle rate. ● The Capital Gains Incentive Distribution provided for the Special Unitholder, as a member of the LLC, to receive, on a quarterly basis, a cash distribution equal to a percentage of the LLC’s realized capital gains (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) for each quarter. ● The Liquidation Incentive Distribution provided for the Special Unitholder to receive a cash distribution equal to a percentage of the difference between the net proceeds from the liquidation of the LLC or the exchange listing of its shares (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) and the LLC’s aggregate NAV immediately prior to the time of such liquidation or listing. Type of Compensation and Recipient Determination of Amount Performance Participation Fees (effective April 1, 2020 and thereafter) Under the Operating Agreement, the "Performance Participation Fee" which the Special Unitholder is entitled to is calculated and payable in arrears, for an amount equal to 12.5% of the total return generated by the LLC during the most recently completed fiscal quarter, subject to a hurdle amount of 1.50% (or 6% annualized) (the "Hurdle Amount"), a loss carryforward amount and a fee carryforward amount. The "Total Return Amount" is defined for each quarterly calculation period, as an amount equal to the sum of: • The aggregate amount of all cash distributions accrued or paid (without duplication) during such quarter on the shares outstanding at the end of such quarter, plus • The amount of the change in aggregate NAV of such shares since the beginning of such quarter, before giving effect to (x) changes in the aggregate NAV of such shares during such quarter resulting solely from the net proceeds of issuances and/or repurchase of shares by the LLC, and (y) the amount of any accrual of the Performance Participation Fee during such quarter. The calculation of the Total Return Amount for each period shall include any appreciation or depreciation in the NAV of the shares issued during such period, but exclude the proceeds from the initial issuance of such shares. The total NAV of the shares outstanding as of the last business day of a calendar quarter shall be the amount against which changes in the total NAV of the shares outstanding during the subsequent calendar quarter is measured. Furthermore, the "Loss Carryforward Amount" shall initially equal zero and cumulatively increase in any calendar quarter by the absolute value of any negative total return for such quarter and cumulatively decrease in any calendar quarter by the amount of any positive total return. The "Fee Carryforward Amount" shall also initially equal zero, and cumulatively increase in any calendar quarter by (i) the amount, if any, by which the Hurdle Amount (noted above) for such quarter exceeds any positive Total Return Amount for such quarter; and (ii) the amount, if any, by which the catch-up amount for such quarter exceeds excess profits for such quarter. The fee carryforward amount shall cumulatively decrease in any calendar quarter by the amount, if any, of the Fee Carryforward Amount paid to the Special Unitholder for such quarter. Neither the Loss Carryforward Amount nor the Fee Carryforward Amounts shall be less than zero at any given time. Type of Compensation and Recipient Determination of Amount The Special Unitholder shall receive the Performance Participation Fee as follows: ● if the Total Return Amount for the applicable period exceeds the sum of (x) the Hurdle Amount for such period and (y) the Loss Carryforward Amount for such Period (any such excess, “Excess Profits”), 100% of such Excess Profits until the total amount paid to the Special Unitholder equals 12.5% of the sum of (x) the Hurdle Amount for such period and (y) any amount paid to the Special Unitholder pursuant to this clause (the “Catch-Up Amount”); ● to the extent there are remaining Excess Profits after payment of the Catch-Up Amount, 100% of such remaining Excess Profits until such amount paid to the Special Unitholder equals the amount of the Fee Carryforward Amount for such period; and ● to the extent there are remaining Excess Profits after payment of the Catch-Up Amount and the Fee Carryforward Amount (as defined above), 12.5% of such remaining Excess Profits. The "Liquidation Performance Participation Fee" payable to the Special Unitholder will equal 20.0% of the net proceeds from a liquidation of the LLC in excess of adjusted capital, as measured immediately prior to liquidation. Adjusted capital shall mean the LLC NAV immediately prior to the time of a liquidation or a listing. In the event of any liquidity event that involves a listing of the LLC’s shares, or a transaction in which the LLC’s members receive shares of a company that is listed, on a national securities exchange, the Liquidation Performance Participation Fee will equal 20.0% of the amount, if any, by which the LLC’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 Performance Participation Fee will be determined and payable in arrears 30 days after the commencement of trading following such liquidity event. The amendments to the incentive fee structure pursuant to the Operating Agreement were applied retroactively as of April 1, 2020 and for all periods thereafter.
Schedule of Fair Values of Derivatives	Consolidated Statements of Assets and Liabilities – Fair Values of Derivatives at December 31, 2021 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 $ — Swap contracts, at fair value $ 7,501,983 $ — $ 7,501,983 Consolidated Statements of Assets and Liabilities – Fair Value of Derivatives at December 31, 2020 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 $ — Swap contracts, at fair value $ 9,750,909 $ — $ 9,750,909
Schedule of Effect of Derivative Instruments on the Consolidated Statement 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, Change in net unrealized depreciation on derivative transactions for the year ended December 31, Change in net unrealized depreciation on derivative transactions for the year ended December 31, Swaps Interest Rate Risk $ 2,248,926 $ (4,872,567) $ (5,002,305) $ 2,248,926 $ (4,872,567) $ (5,002,305) Risk Exposure Other expenses for the year ended December 31, Other expenses for the year ended December 31, Other expenses for the year ended December 31, Swaps Interest Rate Risk $ 2,024,070 $ 1,702,655 $ 229,731 $ 2,024,070 $ 1,702,655 $ 229,731

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of Investment Composition	The composition of the Company’s investments as of December 31, 2021, at fair value, were as follows: Investments at Investments at Fair Value Battery Storage: Pacifica Portfolio $ 11,288,841 $ 10,747,811 0.7 % Subtotal $ 11,288,841 $ 10,747,811 0.7 % Biomass: Eagle Valley Biomass Portfolio $ 24,533,222 $ 17,184,912 1.2 % Subtotal $ 24,533,222 $ 17,184,912 1.2 % Commercial Solar: Celadon Portfolio $ 165,129,450 $ 187,410,880 13.1 % GEH Portfolio 150,463,205 157,925,117 11.0 % Ponderosa Portfolio 49,514,975 59,577,751 4.1 % Sego Lily - Solar Portfolio 107,621,275 122,272,431 8.5 % Trillium Portfolio 74,764,309 101,432,185 7.1 % Other Commercial Solar Portfolios 250,865,362 302,548,767 21.1 % Subtotal $ 798,358,576 $ 931,167,131 64.9 % Wind: Sego Lily - Wind Portfolio $ 117,410,390 $ 140,965,616 9.8 % Greenbacker Wind Holdings II Portfolio 62,787,210 62,272,198 4.3 % Greenbacker Wind - HoldCo Portfolio 84,674,188 78,025,844 5.4 % Other Wind Investments Portfolios 56,638,076 58,770,864 4.1 % Subtotal $ 321,509,864 $ 340,034,522 23.6 % Other Investments: Other Portfolios $ 35,034,396 $ 35,243,259 2.5 % Subtotal $ 35,034,396 $ 35,243,259 2.5 % Energy Efficiency: Other Energy Efficiency Portfolios $ 668,736 $ 685,784 0.1 % Subtotal $ 668,736 $ 685,784 0.1 % Secured Loans: Chaberton Loan $ 2,247,962 $ 2,247,962 0.2 % Encore Loan 3,058,527 3,058,527 0.2 % Hudson Loan 4,984,650 4,984,650 0.3 % Hudson II Loan 4,227,098 4,227,098 0.3 % New Market Loan 5,008,070 5,008,070 0.3 % Shepherd's Run Loan 8,751,528 8,751,528 0.6 % SE Solar Loan 5,008,304 5,008,304 0.3 % Subtotal $ 33,286,139 $ 33,286,139 2.2 % Investments in Money Market Funds: Allspring Treasury Plus Money Market Fund - Institutional Class $ 16,823,110 $ 16,823,110 1.2 % Fidelity Government Portfolio - Class I 16,873,111 16,873,111 1.2 % First American Government Obligations Fund - Class X 16,823,111 16,823,111 1.2 % First American Government Obligations Fund - Class Z 50,000 50,000 — % JPMorgan US Government Money Market Fund - Class L 16,823,111 16,823,111 1.2 % Subtotal $ 67,392,443 $ 67,392,443 4.8 % Total $ 1,292,072,217 $ 1,435,742,001 100.0 % The composition of the Company’s investments as of December 31, 2020, at fair value, were as follows: Investments at Investments at Fair Value Battery Storage: Pacifica Portfolio $ 8,839,235 $ 8,839,235 1.3 % Subtotal $ 8,839,235 $ 8,839,235 1.3 % Biomass: Eagle Valley Biomass Portfolio $ 23,236,352 $ 23,236,352 3.5 % Subtotal $ 23,236,352 $ 23,236,352 3.5 % Commercial Solar: GEH Portfolio $ 114,253,479 $ 124,637,707 18.9 % Magnolia Sun Portfolio 33,008,559 36,904,011 5.6 % Other Commercial Solar Portfolios 67,933,619 70,814,994 10.7 % Sego Lily - Solar Portfolio 29,178,404 62,135,652 9.4 % Trillium Portfolio 83,219,738 105,913,033 16.1 % Subtotal $ 327,593,799 $ 400,405,397 60.7 % Wind: Greenbacker Wind Holdings II Portfolio $ 33,834,320 $ 35,839,967 5.4 % Greenbacker Wind - HoldCo Portfolio 73,244,891 75,013,771 11.4 % Greenbacker Wind Portfolio - Maine 12,704,196 23,758,084 3.6 % Other Wind Investments Portfolios 19,986,133 20,356,806 3.1 % Subtotal $ 139,769,540 $ 154,968,628 23.5 % Other Investments: Other Portfolios $ 23,669,446 $ 23,291,114 3.5 % Subtotal $ 23,669,446 $ 23,291,114 3.5 % Energy Efficiency: Other Energy Efficiency Portfolios $ 738,348 $ 741,581 0.1 % Subtotal $ 738,348 $ 741,581 0.1 % Secured Loans: Encore Loan $ 10,606,725 $ 10,606,725 1.6 % Hudson Loan 6,021,402 6,021,402 0.9 % Hudson II Loan 3,923,873 3,923,873 0.6 % New Market Loan 5,007,350 5,007,350 0.8 % SE Solar Loan 5,005,244 5,005,244 0.8 % TUUSSO Loan $ 6,763,096 $ 6,763,096 1.0 % Subtotal $ 37,327,690 $ 37,327,690 5.7 % Investments Money Market Funds: Fidelity Government Portfolio - Class I $ 10,100,000 $ 10,100,000 1.5 % First American Government Obligation Fund - Class Z 1,072,720 1,072,720 0.2 % Invesco Government & Agency Portfolio - Institutional Class 7 7 — % Subtotal $ 11,172,727 $ 11,172,727 1.7 % Total $ 572,347,137 $ 659,982,724 100.0 %
Investments by Geographic Areas	The composition of the Company’s investments as of December 31, 2021 by geographic region, at fair value, were as follows: Investments at Investments at Fair Value United States: East Region $ 376,929,916 $ 444,160,983 30.9 % Mid - West Region 222,573,610 233,427,679 16.3 Mountain Region 268,907,355 286,693,236 20.0 South Region 105,516,478 111,030,877 7.7 West Region 249,149,279 291,286,897 20.3 Total United States $ 1,223,076,638 $ 1,366,599,672 95.2 % Canada: 1,603,136 1,749,886 0.1 Money Markets: 67,392,443 67,392,443 4.7 Total $ 1,292,072,217 $ 1,435,742,001 100.0 % The composition of the Company’s investments as of December 31, 2020 by geographic region, at fair value, were as follows: Investments at Investments at Fair Value United States: East Region $ 148,159,362 $ 168,616,615 25.5 % Mid - West Region 120,709,771 127,384,880 19.3 Mountain Region 113,435,944 153,512,583 23.3 South Region 83,302,384 85,763,612 13.0 West Region 93,963,813 111,842,679 16.9 Total United States $ 559,571,274 $ 647,120,369 98.0 % Canada: 1,603,136 1,689,628 0.3 Money Markets: 11,172,727 11,172,727 1.7 Total $ 572,347,137 $ 659,982,724 100.0 %
Schedule of Investments by Industry	The composition of the Company’s investments as of December 31, 2021 by industry, at fair value, were as follows: Investments at Investments at Fair Value Battery Storage (2) $ 11,288,841 $ 10,747,811 0.7 % Biomass 24,533,222 17,184,912 1.2 Commercial Solar (1) (2) 831,644,715 964,453,270 67.2 Wind 321,509,864 340,034,522 23.7 Other Investments 35,034,396 35,243,259 2.5 Energy Efficiency 668,736 685,784 — Money Market Funds 67,392,443 67,392,443 4.7 Total $ 1,292,072,217 $ 1,435,742,001 100.0 % (1) Includes loans in the amount of $33,286,139. (2) Includes assets that have not reached COD. The composition of the Company’s investments as of December 31, 2020 by industry, at fair value, were as follows: Investments at Investments at Fair Value Biomass $ 23,236,352 $ 23,236,352 3.5 % Commercial Solar (1) (2) 364,921,489 437,733,087 66.4 Battery Storage (2) 8,839,235 8,839,235 1.3 Wind (2) 139,769,540 154,968,628 23.5 Other Investments 23,669,446 23,291,114 3.5 Energy Efficiency 738,348 741,581 0.1 Money Market Funds 11,172,727 11,172,727 1.7 Total $ 572,347,137 $ 659,982,724 100.0 % (1) Includes loans in the amount of $37,327,690. (2) Includes assets that have not reached COD.

Fair Value Measurements _ Inv_2

Fair Value Measurements — Investments (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021, according to the fair value hierarchy: Valuation Inputs Level 1 Level 2 Level 3 Fair Value Limited Liability Company Member Interests $ — $ — $ 1,332,932,893 $ 1,332,932,893 Capital Stock — — 1,749,886 1,749,886 Energy Efficiency Secured Loans — — 380,640 380,640 Secured Loans - Other — — 33,286,139 33,286,139 Money Market Funds 67,392,443 — — 67,392,443 Total $ 67,392,443 $ — $ 1,368,349,558 $ 1,435,742,001 Other Financial Instruments* Open swap contracts - liabilities $ — $ (7,501,983) $ — $ (7,501,983) Total $ — $ (7,501,983) $ — $ (7,501,983) * 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, 2020, according to the fair value hierarchy: Valuation Inputs Level 1 Level 2 Level 3 Fair Value Limited Liability Company Member Interests $ — $ — $ 609,394,039 $ 609,394,039 Capital Stock — — 1,689,628 1,689,628 Energy Efficiency Secured Loans — — 398,640 398,640 Secured Loans - Other — — 37,327,690 37,327,690 Money Market Funds 11,172,727 — — 11,172,727 Total $ 11,172,727 $ — $ 648,809,997 $ 659,982,724 Other Financial Instruments* Open swap contracts - liabilities $ — $ (9,750,909) $ — $ (9,750,909) Total $ — $ (9,750,909) $ — $ (9,750,909) * 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 Measurement Inputs and Valuation Techniques	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, 2021: Balance as of December 31, Net change Translation Purchases Cost adjustments (1) Sales and repayments of investments (2) Net realized Balance as of December 31, Limited Liability Company Member Interests $ 609,394,039 $ 55,973,939 $ — $ 1,089,298,390 $ (440,266,245) $ 18,561,952 $ (29,182) $ 1,332,932,893 Capital Stock 1,689,628 49,531 10,727 — — — — 1,749,886 Energy Efficiency - Secured Loans 398,640 — — — — (18,000) — 380,640 Secured Loans - Other 37,327,690 — — 24,431,121 — (28,472,672) — 33,286,139 Total $ 648,809,997 $ 56,023,470 $ 10,727 $ 1,113,729,511 $ (440,266,245) $ (9,928,720) $ (29,182) $ 1,368,349,558 (1) Includes 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, 2020 : Balance as of December 31, Net change in unrealized appreciation on investments Translation of assets and liabilities denominated in foreign currencies Purchases Cost adjustments (1) Sales and repayments of investments (2) Net realized gain on investments Balance as of December 31, Limited Liability Company Member Interests $ 449,981,086 $ 51,391,716 $ — $ 380,144,045 $ (212,742,142) $ (67,211,216) $ 7,830,550 $ 609,394,039 Capital Stock 1,611,955 (14,346) 92,019 — — — — 1,689,628 Energy Efficiency - Secured Loans 479,140 — — — — (80,500) — 398,640 Secured Loans - Other 23,103,690 — — 14,890,722 — (666,722) — 37,327,690 Total $ 475,175,871 $ 51,377,370 $ 92,019 $ 395,034,767 $ (212,742,142) $ (67,958,438) $ 7,830,550 $ 648,809,997 (1) Includes 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, 2019 : Balance as of December 31, Net change in unrealized appreciation on investments Translation of assets and liabilities denominated in foreign currencies Purchases Cost adjustments (1) Sales and Repayments of investments (2) Net realized gain on investments Balance as of December 31, Limited Liability Company Member Interests $ 304,542,921 $ 27,774,068 $ — $ 314,175,394 $ (159,495,169) $ (49,931,866) $ 12,915,738 $ 449,981,086 Capital Stock 2,081,554 (477,188) 7,589 — — — — 1,611,955 Energy Efficiency - Secured Loans 551,640 — — — — (72,500) — 479,140 Secured Loans - Other — — — 39,410,466 (2,056,776) (14,250,000) — 23,103,690 Total $ 307,176,115 $ 27,296,880 $ 7,589 $ 353,585,860 $ (161,551,945) $ (64,254,366) $ 12,915,738 $ 475,175,871 (1) Includes 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, 2021, most 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, 2021: Fair Value Valuation Techniques Unobservable Inputs Range of Inputs Battery Storage* $ 10,747,811 Income Approach and Transaction Cost Discount rate, kWh storage, potential leverage and estimated remaining useful life 9.37%, 2.16% annual degradation in production, 11 years Biomass $ 17,184,912 Income Approach Discount rate, kWh production, potential leverage and estimated remaining useful life 8.25%, No annual degradation in production, 12 years Commercial Solar* $ 931,167,131 Income Approach and Transaction Cost Discount rate, kWh production, potential leverage and estimated remaining useful life 3.50%–9.07% (7.63%), 0%–0.50% (0.50%) annual degradation in production, 9.2–39.0 (33.6) years Wind $ 340,034,522 Income Approach Discount rate, kWh production, potential leverage and estimated remaining useful life 7.75%–8.43% (7.81%), No annual degradation in production, 18.7–31.0 (26.4) years Other Investments $ 35,243,259 Transaction Cost Not Applicable Not Applicable Energy Efficiency $ 685,784 Income and Collateral-Based Approach Market yields and value of collateral 10.25%, No annual degradation in production, 3.2–4.0 (3.6) years Secured Loans $ 33,286,139 Yield Analysis Market yields 8.00%–10.00% (8.48%) * Includes assets that have not reached COD. As of December 31, 2020, most 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, 2020: Fair Value Valuation Techniques Unobservable Inputs Range of Inputs (weighted average) Battery Storage* $ 8,839,235 Transaction Cost Not Applicable Not Applicable Biomass $ 23,236,352 Transaction Cost Not Applicable Not Applicable Commercial Solar* $ 400,405,397 Income Approach Discount rate, kWh production, potential leverage and estimated remaining useful life 7.25%–8.59% (8.01%) 0.50% annual degradation in production 8.5–40.0 (33.7) years Wind* $ 154,968,628 Income Approach and Transaction Cost Discount rate, kWh production, potential leverage and estimated remaining useful life 7.75%–9.25% (8.42%) No annual degradation in production, 19.7–30.7 (24.4) years Other Investments $ 23,291,114 Transaction Cost Not Applicable Not Applicable Energy Efficiency $ 741,581 Income and Collateral-Based Approach Income-Based Approach and Market yields 10.25% No annual degradation in production 4.2–5.0 (4.6) years Secured Loans $ 37,327,690 Yield Analysis Market yields 8.00%–10.00% (8.84%) * Includes assets that have not reached COD.

Related Party Agreements and _2

Related Party Agreements and Transaction Agreements (Tables)	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table provides information in regard to the status of O&O costs related to the continuous offering as of December 31, 2021: December 31, 2021 Total O&O costs incurred by the Advisor and dealer manager $ 1,058,658 Amounts previously reimbursed to the Advisor/dealer manager by the Company 451,048 Amounts accrued and/or payable to Advisor by the Company 607,610 Amounts of the contingent liability subject to payment by the Company only upon adequate gross offering proceeds being raised $ — The following table provides information in regard to the status of O&O costs related to the terminated offering as of December 31, 2020: December 31, Total O&O costs incurred by the Advisor and dealer manager $ 94,486 Amounts previously reimbursed to the Advisor/dealer manager by the Company — Amounts accrued and/or payable to Advisor by the Company 1,751 Amounts of the contingent liability subject to payment by the Company only upon adequate gross offering proceeds being raised $ 92,735 Type of Compensation and Recipient Determination of Amount Base Management Fees — Advisor The base management fee payable to the Advisor will be calculated at a monthly rate of 0.167% (2.00% annually) of our gross assets (including amounts borrowed up to $50,000,000) until gross assets exceed $800,000,000. The base management fee monthly rate will decrease to 0.14583% (1.75% annually) for gross assets between $800,000,001 to $1,500,000,000 and 0.125% (1.50% annually) for gross assets greater than $1,500,000,000. For services rendered under the advisory agreement, the base management fee will be payable monthly in arrears, or more frequently as authorized under the advisory agreement. 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 prorated. The base management fee may be deferred or waived, in whole or in 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. On July 1, 2021, the Company entered into the Fourth Amended and Restated Advisory Agreement with the Advisor. Effective July 1, 2021, the base management fee payable to the Advisor is calculated at a monthly rate of 0.167% (2.00% annually) of the net assets until the net assets exceed $800,000,000. The base management fee monthly rate will decrease to 0.14583% (1.75% annually) for net assets between $800,000,001 to $1,500,000,000 and to 0.125% (1.50% annually) for net assets greater than $1,500,000,000. Incentive Allocation and Distribution — Special Unitholder (effective through March 31, 2020) Under the LLC's Third Amended and Restated Limited Liability Company Agreement dated June 27, 2014, the incentive allocation and distribution had three parts: Income Incentive Distribution, Capital Gains Incentive Distribution and the Liquidation Incentive Distribution. The features of this incentive fee structure were as follows: ● The Income Incentive Distribution provided for the Special Unitholder, as a member of the LLC, to receive, on a quarterly basis, a cash distribution equal to a percentage of the LLC’s net investment income (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) for each quarter, in excess of a specified hurdle rate. ● The Capital Gains Incentive Distribution provided for the Special Unitholder, as a member of the LLC, to receive, on a quarterly basis, a cash distribution equal to a percentage of the LLC’s realized capital gains (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) for each quarter. ● The Liquidation Incentive Distribution provided for the Special Unitholder to receive a cash distribution equal to a percentage of the difference between the net proceeds from the liquidation of the LLC or the exchange listing of its shares (as calculated in accordance with the LLC's Third Amended and Restated Limited Liability Company Agreement) and the LLC’s aggregate NAV immediately prior to the time of such liquidation or listing. Type of Compensation and Recipient Determination of Amount Performance Participation Fees (effective April 1, 2020 and thereafter) Under the Operating Agreement, the "Performance Participation Fee" which the Special Unitholder is entitled to is calculated and payable in arrears, for an amount equal to 12.5% of the total return generated by the LLC during the most recently completed fiscal quarter, subject to a hurdle amount of 1.50% (or 6% annualized) (the "Hurdle Amount"), a loss carryforward amount and a fee carryforward amount. The "Total Return Amount" is defined for each quarterly calculation period, as an amount equal to the sum of: • The aggregate amount of all cash distributions accrued or paid (without duplication) during such quarter on the shares outstanding at the end of such quarter, plus • The amount of the change in aggregate NAV of such shares since the beginning of such quarter, before giving effect to (x) changes in the aggregate NAV of such shares during such quarter resulting solely from the net proceeds of issuances and/or repurchase of shares by the LLC, and (y) the amount of any accrual of the Performance Participation Fee during such quarter. The calculation of the Total Return Amount for each period shall include any appreciation or depreciation in the NAV of the shares issued during such period, but exclude the proceeds from the initial issuance of such shares. The total NAV of the shares outstanding as of the last business day of a calendar quarter shall be the amount against which changes in the total NAV of the shares outstanding during the subsequent calendar quarter is measured. Furthermore, the "Loss Carryforward Amount" shall initially equal zero and cumulatively increase in any calendar quarter by the absolute value of any negative total return for such quarter and cumulatively decrease in any calendar quarter by the amount of any positive total return. The "Fee Carryforward Amount" shall also initially equal zero, and cumulatively increase in any calendar quarter by (i) the amount, if any, by which the Hurdle Amount (noted above) for such quarter exceeds any positive Total Return Amount for such quarter; and (ii) the amount, if any, by which the catch-up amount for such quarter exceeds excess profits for such quarter. The fee carryforward amount shall cumulatively decrease in any calendar quarter by the amount, if any, of the Fee Carryforward Amount paid to the Special Unitholder for such quarter. Neither the Loss Carryforward Amount nor the Fee Carryforward Amounts shall be less than zero at any given time. Type of Compensation and Recipient Determination of Amount The Special Unitholder shall receive the Performance Participation Fee as follows: ● if the Total Return Amount for the applicable period exceeds the sum of (x) the Hurdle Amount for such period and (y) the Loss Carryforward Amount for such Period (any such excess, “Excess Profits”), 100% of such Excess Profits until the total amount paid to the Special Unitholder equals 12.5% of the sum of (x) the Hurdle Amount for such period and (y) any amount paid to the Special Unitholder pursuant to this clause (the “Catch-Up Amount”); ● to the extent there are remaining Excess Profits after payment of the Catch-Up Amount, 100% of such remaining Excess Profits until such amount paid to the Special Unitholder equals the amount of the Fee Carryforward Amount for such period; and ● to the extent there are remaining Excess Profits after payment of the Catch-Up Amount and the Fee Carryforward Amount (as defined above), 12.5% of such remaining Excess Profits. The "Liquidation Performance Participation Fee" payable to the Special Unitholder will equal 20.0% of the net proceeds from a liquidation of the LLC in excess of adjusted capital, as measured immediately prior to liquidation. Adjusted capital shall mean the LLC NAV immediately prior to the time of a liquidation or a listing. In the event of any liquidity event that involves a listing of the LLC’s shares, or a transaction in which the LLC’s members receive shares of a company that is listed, on a national securities exchange, the Liquidation Performance Participation Fee will equal 20.0% of the amount, if any, by which the LLC’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 Performance Participation Fee will be determined and payable in arrears 30 days after the commencement of trading following such liquidity event. The amendments to the incentive fee structure pursuant to the Operating Agreement were applied retroactively as of April 1, 2020 and for all periods thereafter.

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Borrowings	The Company’s borrowings as of December 31, 2021 and December 31, 2020 was as follows: December 31, 2021 December 31, 2020 Aggregate Principal Amount Carrying Value Deferred Term Note Aggregate Principal Carrying Value Deferred Term Note New Credit Facility $ 97,822,841 $ 82,151,509 $ 82,151,509 $ 2,737,887 $ 79,413,622 $ 97,822,841 $ 90,145,500 $ 90,145,500 $ 3,643,846 $ 86,501,654 LC Facility 32,500,000 — — — — 22,500,000 — — — — Total $ 130,322,841 $ 82,151,509 $ 82,151,509 $ 2,737,887 $ 79,413,622 $ 120,322,841 $ 90,145,500 $ 90,145,500 $ 3,643,846 $ 86,501,654
Schedule of Line of Credit Facilities	The following table shows the components of interest expense related to the Company's borrowings for the year ended December 31, 2021: For the year ended December 31, Credit Facility commitment fee $ 423,075 Credit Facility loan interest 1,659,715 Amortization of deferred financing costs 905,959 Other* — Total $ 2,988,749 Weighted average interest rate on Credit Facility 1.88 % Weighted average outstanding balance of Credit Facility $ 87,020,554 * Primarily includes financing costs of Credit Facility. The following table shows the components of interest expense related to the Company's borrowings for the year ended December 31, 2020: For the year ended December 31, Credit Facility commitment fee $ 361,373 Credit Facility loan interest 2,081,996 Amortization of deferred financing costs 576,464 Other* — Total $ 3,019,833 Weighted average interest rate on Credit Facility 2.61 % Weighted average outstanding balance of Credit Facility $ 74,831,946 * Primarily includes financing costs of credit facility. The following table shows the components of interest expense related to the Company's borrowings for the year ended December 31, 2019: For the year ended December 31, Credit Facility commitment fee $ 43,087 Credit Facility loan interest 1,360,409 Amortization of deferred financing costs 226,742 Other* 1,182,564 Total $ 2,812,802 Weighted average interest rate on Credit Facility 4.32 % Weighted average outstanding balance of Credit Facility $ 53,753,277 * Primarily includes financing costs of credit facility.
Schedule of Maturities of Long-term Debt	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 2022 $ 7,954,526 2023 8,098,085 2024 8,245,188 2025 57,853,710 2026 — Thereafter — $ 82,151,509

Members' Equity (Tables)

Members' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021: Shares Outstanding as of December 31, 2020 Shares Sold During the Shares Issued Shares Repurchased Shares Transferred During the Period Shares Outstanding as of December 31, 2021 Class A shares 16,844,129 — 413,371 (661,926) (15,016) 16,580,558 Class C shares 2,734,661 — 93,130 (85,828) — 2,741,963 Class I shares 6,526,001 — 231,377 (296,575) (11,310) 6,449,493 Class P-A shares 55,264 711,897 16,432 — — 783,593 Class P-I shares 36,710,292 56,416,202 411,369 (1,493,868) 25,018 92,069,013 Class P-D shares — 197,405 1,143 — — 198,548 Class P-S shares — 46,075,796 248,961 — — 46,324,757 Class P-T shares — 237,124 2,470 — — 239,594 Total 62,870,347 103,638,424 1,418,253 (2,538,197) (1,308) 165,387,519 The following table is a summary of the shares issued and repurchased during the period and outstanding as of December 31, 2020: Shares Outstanding as of December 31, Shares Sold Shares Issued Shares Repurchased Shares Transferred During the Period Shares Outstanding as of December 31, Class A shares 17,210,016 12,964 436,348 (815,199) — 16,844,129 Class C shares 2,718,475 — 95,536 (66,086) (13,264) 2,734,661 Class I shares 6,693,658 5,783 242,963 (429,396) 12,993 6,526,001 Class P-A shares 18,109 37,155 — — — 55,264 Class P-I shares 21,249,352 16,112,855 (296) (651,619) — 36,710,292 Total 47,889,610 16,168,757 774,551 (1,962,300) (271) 62,870,347
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, 2021, 2020 and 2019 were as follows: Class A Class C Class I Class P-A Class P-I Class P-D Shares Class P-S Shares Class P-T Shares Total For the Year Ended December 31, 2021 Proceeds from Shares Sold $ — $ — $ — $ 6,210,692 $ 504,228,647 $ 1,774,641 $413,941,487 $ 2,130,975 $ 928,286,442 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,511,041 $ 768,984 $ 1,964,922 $ 142,773 $ 3,648,652 $ 10,264 $ 2,222,218 $ 22,122 $ 12,290,976 For the Year Ended December 31, 2020 Proceeds from Shares Sold $ 110,970 $ — $ 49,850 $ 323,750 $ 144,310,683 $ — $ — $ — $ 144,795,253 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,755,174 $ 802,289 $ 2,089,430 $ — $ 128 $ — $ — $ — $ 6,647,021 For the Year Ended December 31, 2019 Proceeds from Shares Sold $ 5,256,053 $ 3,651,717 $ 3,773,270 $ 22,875 $ 84,637,482 $ — $ — $ — $ 97,341,397 Proceeds from Shares Issued through Reinvestment of Distributions $ 3,944,111 $ 733,788 $ 2,074,778 $ — $ — $ — $ — $ — $ 6,752,677
Schedule of Repurchase Agreements	The quarterly share repurchase limits for the Company’s new share repurchase program are set forth below. Quarter Ending Share Repurchase Limit(s) December 31, 2020 During such fiscal quarter, 1.875% of the weighted average number of shares outstanding in the prior four fiscal quarters March 31, 2021 During such fiscal quarter, 2.50% of the weighted average number of shares outstanding in the prior four fiscal quarters June 30, 2021 During such fiscal quarter, 3.75% of the weighted average number of shares outstanding in the prior four fiscal quarters September 30, 2021, and each quarter thereafter During any 12-month period, 20.00% of the weighted average number of outstanding shares During any fiscal quarter, 5.00% of the weighted average number of shares outstanding in the prior four fiscal quarters

Distributions (Tables)

Distributions (Tables)	12 Months Ended
	Dec. 31, 2021
Distributions Made to Members or Limited Partners [Abstract]
Schedule of Distributions	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 P-D P-T P-S 1-Nov-15 31-Jan-16 $ 0.00165 $ 0.00165 $ 0.00165 $ — $ — $ — $ — $ — 1-Feb-16 30-Apr-16 $ 0.00166 $ 0.00166 $ 0.00166 $ — $ — $ — $ — $ — 1-May-16 31-Jul-16 $ 0.00166 $ 0.00166 $ 0.00166 $ 0.00158 $ 0.00158 $ — $ — $ — 1-Aug-16 31-Oct-16 $ 0.00168 $ 0.00168 $ 0.00168 $ 0.00160 $ 0.00160 $ — $ — $ — 1-Nov-16 31-Jan-17 $ 0.00169 $ 0.00164 $ 0.00169 $ 0.00160 $ 0.00160 $ — $ — $ — 1-Feb-17 30-Apr-17 $ 0.00168 $ 0.00164 $ 0.00168 $ 0.00160 $ 0.00160 $ — $ — $ — 1-May-17 31-Jul-17 $ 0.00167 $ 0.00163 $ 0.00167 $ 0.00160 $ 0.00158 $ — $ — $ — 1-Aug-17 31-Oct-17 $ 0.00167 $ 0.00163 $ 0.00167 $ — $ 0.00159 $ — $ — $ — 1-Nov-17 31-Oct-18 $ 0.00167 $ 0.00163 $ 0.00167 $ — $ 0.00158 $ — $ — $ — 1-Nov-18 30-Apr-20 $ 0.00167 $ 0.00163 $ 0.00167 $ 0.00165 $ 0.00158 $ — $ — $ — 1-May-20 30-Nov-20 $ 0.00152 $ 0.00149 $ 0.00152 $ 0.00153 $ 0.00158 $ — $ — $ — 1-Dec-20 — $ 0.00152 $ 0.00149 $ 0.00152 $ 0.00152 $ 0.00158 $ 0.00158 $ 0.00158 $ 0.00158
Schedule of Dividends Declared	The following table reflects the distributions declared during the year ended December 31, 2021: Pay Date Paid in Cash Values of Shares Issued under DRP Total February 1, 2021 $ 2,555,800 $ 538,241 $ 3,094,041 March 4, 2021 3,063,308 487,868 3,551,176 April 1, 2021 4,783,092 523,715 5,306,807 May 3, 2021 4,733,419 565,208 5,298,627 June 1, 2021 4,762,355 886,124 5,648,479 July 1, 2021 4,709,348 960,096 5,669,444 August 2, 2021 5,217,796 1,071,227 6,289,023 September 1, 2021 5,423,345 1,145,375 6,568,720 October 1, 2021 5,516,811 1,229,494 6,746,305 November 1, 2021 5,946,262 1,463,710 7,409,972 December 1, 2021 5,938,698 1,662,579 7,601,277 January 3, 2022 6,174,878 1,755,921 7,930,799 Total $ 58,825,112 $ 12,289,558 $ 71,114,670 The following table reflects the distributions declared during the year ended December 31, 2020: Pay Date Paid in Cash Value of Shares Issued under DRP Total February 3, 2020 $ 1,788,542 $ 603,697 $ 2,392,239 March 2, 2020 1,733,243 561,984 2,295,227 April 2, 2020 1,890,493 593,200 2,483,693 May 1, 2020 1,838,747 578,258 2,417,005 June 1, 2020 1,829,752 551,563 2,381,315 July 1, 2020 1,827,301 532,220 2,359,521 August 3, 2020 2,133,835 548,210 2,682,045 September 1, 2020 2,157,292 546,746 2,704,038 October 1, 2020 2,178,934 529,183 2,708,117 November 2, 2020 2,285,549 539,435 2,824,984 December 1, 2020 2,281,547 524,274 2,805,821 January 1, 2021 2,447,041 537,476 2,984,517 Total $ 24,392,276 $ 6,646,246 $ 31,038,522 The following table reflects the distributions declared during the year ended December 31, 2019: Pay Date Paid in Cash Value of Shares Issued under DRP Total February 1, 2019 $ 1,317,325 $ 583,571 $ 1,900,896 March 1, 2019 1,247,614 552,615 1,800,229 April 1, 2019 1,452,785 611,200 2,063,985 May 1, 2019 1,438,057 600,614 2,038,671 June 3, 2019 1,553,801 622,584 2,176,385 July 1, 2019 1,764,525 383,627 2,148,152 August 1, 2019 1,850,929 393,237 2,244,166 September 2, 2019 1,664,451 613,333 2,277,784 October 1, 2019 1,647,967 589,581 2,237,548 November 1, 2019 1,716,132 609,283 2,325,415 December 2, 2019 1,693,670 587,119 2,280,789 January 1, 2020 1,784,956 605,129 2,390,085 Total $ 19,132,212 $ 6,751,893 $ 25,884,105
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, For the year ended December 31, For the year ended December 31, Cash from operations $ — $ 1,645,856 $ 4,213,803 Offering proceeds 55,097,266 22,149,268 14,393,447 Total cash distributions $ 55,097,266 $ 23,795,124 $ 18,607,250

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Provision	The consolidated income tax provision for the years ended December 31, 2021, 2020 and 2019 is composed of the following: Current Deferred Total Year Ended December 31, 2021 U.S. federal $ — $ 5,075,307 $ 5,075,307 State and local — 2,946,388 2,946,388 Foreign jurisdiction — — — Provision for income taxes $ — $ 8,021,695 $ 8,021,695 Change in valuation allowance — 817,262 817,262 Provision for income taxes, net $ — $ 8,838,957 $ 8,838,957 Current Deferred Total Year Ended December 31, 2020 U.S. federal $ — $ 9,454,902 $ 9,454,902 State and local — 2,716,238 2,716,238 Foreign jurisdiction — — — Provision for income taxes $ — $ 12,171,140 $ 12,171,140 Change in valuation allowance — (803,627) (803,627) Provision for income taxes, net $ — $ 11,367,513 $ 11,367,513 Current Deferred Total Year Ended December 31, 2019 U.S. federal $ — $ 5,658,918 $ 5,658,918 State and local — 382,931 382,931 Foreign jurisdiction — — — Provision for income taxes $ — $ 6,041,849 $ 6,041,849 Change in valuation allowance — 1,231,693 1,231,693 Provision for income taxes, net $ — $ 7,273,542 $ 7,273,542
Schedule of Effective Income Tax Rate Reconciliation	The principal differences between our effective tax rate on operations and the U.S. federal statutory income tax rate are as follows: 2021 Percentage 2020 Percentage 2019 Percentage Taxes at statutory U.S. federal income tax rate $ 10,890,547 21.0 % $ 11,532,973 21.0 % $ 7,125,202 21.0 % Permanent differences (GREC LLC and other) 347,555 0.7 % (1,396,678) (2.5) % 1,387,056 4.1 % State income taxes, net of federal benefit 2,253,655 4.3 % 2,623,353 4.8 % 1,504,182 4.4 % Write off state credits 334,079 0.6 % 634,229 1.2 % — — % Rate changes — — % — — % (1,121,251) (3.3) % Return to provision and other adjustments (1,850,554) (3.6) % (257,314) (0.5) % (2,606,695) (7.7) % Federal tax credits (3,953,587) (7.6) % (965,423) (1.8) % (246,645) (0.7) % Change in valuation allowance 817,262 1.6 % (803,627) (1.5) % 1,231,693 3.6 % Actual provision for income taxes $ 8,838,957 17.0 % $ 11,367,513 20.7 % $ 7,273,542 21.4 %
Schedule of Deferred Tax Assets and Liabilities	Deferred tax assets (liabilities) have been classified on the accompanying Consolidated Statements of Assets and Liabilities as of December 31, 2021 and 2020 as follows: 2021 2020 Amortization $ 42,799 $ 48,179 Disallowed interest 4,731,734 — Net operating losses 60,652,197 39,397,236 Federal and state tax credits 11,996,064 7,120,567 Unrealized gains (102,617,534) (63,739,027) Deferred tax liabilities $ (25,194,740) $ (17,173,045) Less: valuation allowance (1,512,356) (695,093) Deferred tax liabilities, net $ (26,707,096) $ (17,868,138)

Financial Highlights (Tables)

Financial Highlights (Tables)	12 Months Ended
	Dec. 31, 2021
Financial Highlights [Abstract]
Schedule of Financial Highlights	The following is a schedule of the financial highlights of the Company attributed to Class A, C, I, P-A, P-I, P-D, P-S, and P-T shares for the year ended December 31, 2021: For the year ended December 31, 2021 Class A Shares Class C Shares Class I Shares Class P-A Shares Class P-I Shares Class P-D Shares Class P-S Shares Class P-T Shares Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.61 $ 8.35 $ 8.61 $ 8.70 $ 9.02 $ 8.96 $ 8.84 $ 8.57 Net investment income 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 Net realized and unrealized gain on investments and swap contracts 0.46 0.46 0.46 0.46 0.46 0.46 0.46 0.46 Change in translation of assets and liabilities denominated in foreign currencies (3) — — — — — — — — (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (0.14) (0.14) (0.14) (0.14) (0.14) (0.14) (0.14) (0.14) Net increase in net assets attributed to common members 0.34 0.34 0.34 0.34 0.34 0.34 0.34 0.34 Shareholder distributions: Distributions from net investment income — — — — — — — — Distributions from offering proceeds (0.56) (0.54) (0.56) (0.56) (0.58) (0.53) (0.53) (0.53) Other (2) (0.07) (0.02) (0.07) 0.10 0.02 0.03 0.09 0.14 Net decrease in members’ equity attributed to common shares (0.63) (0.56) (0.63) (0.46) (0.56) (0.50) (0.44) (0.39) Net asset value for common shares at end of period $ 8.32 $ 8.13 $ 8.32 $ 8.58 $ 8.80 $ 8.80 $ 8.74 $ 8.52 Common members’ equity at end of period $ 137,994,947 $ 22,290,310 $ 53,665,823 $ 6,721,670 $ 810,046,418 $ 1,747,603 $ 404,803,246 $ 2,040,615 Common shares outstanding at end of period 16,580,558 2,741,963 6,449,493 783,593 92,069,013 198,548 46,324,757 239,594 Ratio/supplemental data for common shares (annualized) Total return attributed to common shares based on net asset value 3.29 % 4.03 % 3.29 % 5.18 % 4.13 % 3.81 % 4.98 % 5.48 % Ratio of net investment income to average net assets 0.25 % 0.26 % 0.25 % 0.23 % 0.24 % 0.22 % 0.24 % 0.24 % Ratio of operating expenses to average net assets 3.68 % 3.77 % 3.67 % 3.34 % 3.45 % 3.28 % 3.53 % 3.48 % Portfolio turnover rate 0.98 % 0.98 % 0.98 % 0.98 % 0.98 % 0.98 % 0.98 % 0.98 % (1) The per share data for Class A, C, I, P-A, P-I, P-D, P-S, and P-T shares were derived by using the weighted average shares outstanding during the year ended December 31, 2021, which were 16,741,429, 2,751,320, 6,552,391, 479,717, 67,370,914, 129,799, 32,304,342, and $128,948, 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) Amount is less than $0.01 per share. The following is a schedule of the financial highlights of the Company adjusted for the effect of the revisions discussed in Note 12 attributed to Class A, C, I, P-A and P-I shares for the year ended December 31, 2020. For the year ended December 31, 2020 Class A Class C Class I Class P-A Class P-I Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.40 $ 8.23 $ 8.40 $ 8.44 $ 8.73 Net investment income (2) 0.16 0.16 0.16 0.16 0.16 Net realized and unrealized gain on investments and swap contracts, net of incentive allocation to special unitholder 0.99 0.99 0.99 0.99 0.99 Change in translation of assets and liabilities denominated in foreign currencies (3) — — — — — (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (0.34) (0.34) (0.34) (0.34) (0.34) Net increase in net assets attributed to common members 0.81 0.81 0.81 0.81 0.81 Shareholder distributions: Distributions from net investment income (0.03) (0.03) (0.03) (0.03) (0.03) Distributions from offering proceeds (0.54) (0.53) (0.54) (0.54) (0.55) Offering costs and deferred sales commissions — (0.09) — — — Other (4) (0.03) (0.04) (0.03) 0.02 0.06 Net decrease in members’ equity attributed to common shares (0.60) (0.69) (0.60) (0.55) (0.52) Net asset value for common shares at end of period $ 8.61 $ 8.35 $ 8.61 $ 8.70 $ 9.02 Common members’ equity at end of period $ 144,978,110 $ 22,836,128 $ 56,156,327 $ 480,799 $ 331,100,495 Common shares outstanding at end of period 16,844,129 2,734,661 6,526,001 55,264 36,710,292 Ratio/supplemental data for common shares (annualized) Total return attributed to common shares based on net asset value 9.56 % 8.49 % 9.51 % 10.12 % 10.23 % Ratio of net investment income to average net assets 1.92 % 1.97 % 1.92 % 1.90 % 1.84 % Ratio of operating expenses to average net assets before performance participation fee waiver 5.12 % 5.26 % 5.13 % 5.06 % 4.91 % Ratio of operating expenses to average net assets after performance participation fee waiver 4.96 % 5.09 % 4.96 % 4.90 % 4.75 % Portfolio turnover rate 12.35 % 12.35 % 12.35 % 12.35 % 12.35 % (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, 2020, which were 17,188,603, 2,740,846, 6,672,886, 19,632, and 27,435,653, respectively. (2) Does not reflect any incentive fees that may be payable to the Special Unitholder. (3) Amount is less than $0.01 per share. (4) 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. The following is a schedule of the financial highlights of the Company attributed to Class A, C, I, P-A and P-I shares for the year ended December 31, 2019. For the year ended December 31, 2019 Class A Class C Class I Class P-A Class P-I Per share data attributed to common shares (1) Net Asset Value at beginning of period $ 8.40 $ 8.21 $ 8.40 $ 8.40 $ 8.62 Net investment income (2) 0.17 0.17 0.17 0.17 0.17 Net realized and unrealized gain (loss) on investments and swap contracts, net of incentive allocation to special unitholder 0.68 0.68 0.68 0.68 0.68 Change in translation of assets and liabilities denominated in foreign currencies (3) — — — — — (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (0.24) (0.24) (0.24) (0.24) (0.24) Net increase in net assets attributed to common members 0.61 0.61 0.61 0.61 0.61 Shareholder distributions: Distributions from net investment income (0.10) (0.10) (0.10) (0.10) (0.10) Distributions from offering proceeds (0.51) (0.50) (0.51) (0.51) (0.48) Offering costs and deferred sales commissions (0.02) (0.05) (0.03) — — Other (4) 0.02 0.06 0.03 0.04 0.08 Net decrease in members’ equity attributed to common shares (0.61) (0.59) (0.61) (0.57) (0.50) Net asset value for common shares at end of period $ 8.40 $ 8.23 $ 8.40 $ 8.44 $ 8.73 Common members’ equity at end of period $ 144,540,863 $ 22,364,784 $ 56,217,673 $ 152,879 $ 185,463,453 Common shares outstanding at end of period 17,210,016 2,718,475 6,693,658 18,109 21,249,352 Ratio/supplemental data for common shares (annualized) Total return attributed to common shares based on net asset value 7.30 % 7.54 % 7.04 % 5.66 % 8.15 % Ratio of net investment income to average net assets 2.01 % 2.02 % 1.99 % 2.00 % 1.95 % Ratio of operating expenses to average net assets 4.01 % 4.04 % 3.98 % 3.99 % 3.90 % Portfolio turnover rate 14.04 % 14.04 % 14.04 % 14.04 % 14.04 % (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, 2019, which were 17,270,555, 2,645,713, 6,642,314 17,841, and 17,211,763, respectively. (2) Does not reflect any incentive fees that may be payable to the Special Unitholder. (3) Amount is less than $0.01 per share. (4) Represents the impact of the 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.

Revisions to Prior Period Fin_2

Revisions to Prior Period Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Changes and Error Corrections [Abstract]
Schedule of Error Corrections and Prior Period Adjustments	The following tables set forth the effect of the revisions on each of the individual affected line items in the consolidated financial statements: For the year ended December 31, 2019 As Previously Reported Adjustments As Revised Consolidated Statement of Operations data (Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts $ (7,926,882) $ (2,535,091) $ (10,461,973) Net increase in net assets resulting from operations 34,568,111 (2,535,091) 32,033,020 Net increase in net assets attributed to common members 29,297,441 (2,535,091) 26,762,350 Common stock per share information - basic and diluted Net increase in net assets attributed to common members $ 0.67 $ (0.06) $ 0.61

Organization and Operations o_2

Organization and Operations of the Company - Narrative (Details)	Dec. 31, 2021portfolioinvestment	Dec. 31, 2020portfolioinvestment	Nov. 30, 2020USD ($)	Jun. 04, 2019USD ($)	Feb. 28, 2017USD ($)
Organization and Operations of the Company (Textual)
Number of portfolios | portfolio	14	13
Maximum | Limited Liability Company
Organization and Operations of the Company (Textual)
Dollar value of shares offering					$ 1,000,000,000
UNITED STATES
Organization and Operations of the Company (Textual)
Number of secured loans | investment	7	6
Distribution Reinvestment Plan
Organization and Operations of the Company (Textual)
Offering a maximum shares of common stock			$ 20,000,000	$ 10,000,000
Distribution Reinvestment Plan | Maximum
Organization and Operations of the Company (Textual)
Dollar value of shares offering					$ 200,000,000

Significant Accounting Polici_4

Significant Accounting Policies - Narrative (Details)	1 Months Ended	12 Months Ended
	Nov. 30, 2020USD ($)	Dec. 31, 2021USD ($)jurisdiction	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Related Party Transaction [Line Items]
Cash		$ 92,179,779
Restricted cash		29,683,613	$ 0
Amounts accrued and/or payable to Advisor by the Company		607,610	1,751
Return of capital receivable		654,622	2,159,762
Net increase (decrease) in net assets attributed to special unitholder		0	(1,154,308)	$ (5,270,670)
Special unitholder’s equity		0	0
Performance participation fee payable		3,359,269	3,540,052
Performance participation fee		4,672,078	4,571,927	0
Performance participation fee waiver		0	(747,602)	$ 0
Deferred sales commission payable		4,626,626	131,875
Average notional amount		109,591,475
Initial notional amount		$ 284,692,696
Fixed swap rate (percentage)		1.604%
Cash collateral associated with derivative instrument included in other assets		$ 5,000,000
Number of states portfolio resides in | jurisdiction		36
Restricted Cash Related To Construction Of Pre-Operational Assets
Related Party Transaction [Line Items]
Restricted cash		$ 29,683,613
Greenbacker Capital Management LLC
Related Party Transaction [Line Items]
Amounts accrued and/or payable to Advisor by the Company		$ 607,610	1,751
Greenbacker Capital Management LLC | Public Offering
Related Party Transaction [Line Items]
Limit of offering costs reimbursement to advisor (percentage)		15.00%
Greenbacker Capital Management LLC | Private Offering
Related Party Transaction [Line Items]
Percentage of reimbursement out of gross offering proceeds		0.50%
Advisor and Dealer Manager
Related Party Transaction [Line Items]
Organization and offering costs incurred by Advisor		$ 1,058,658	94,486
Amounts of the contingent liability		$ 0	92,735
Special Unitholder
Related Party Transaction [Line Items]
Incentive fee payable, one-time settlement	$ 4,749,000
Incentive fee payable, write-offs	$ 4,193,559
Net increase (decrease) in net assets attributed to special unitholder			(1,154,308)
Special unitholder’s equity			0
Performance participation fee waiver			$ (747,602)

Significant Accounting Polici_5

Significant Accounting Policies - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basic and diluted
Net investment income	$ 2,655,809	$ 8,807,687	$ 7,277,091
Net increase in net assets attributed to common members	$ 43,020,789	$ 43,551,407	$ 26,762,350
Net investment income per share (in dollars per share)	$ 0.02	$ 0.16	$ 0.17
Net increase in net assets attributed to common members (in dollars per share)	$ 0.34	$ 0.81	$ 0.61
Weighted average common shares outstanding, basic (in shares)	126,458,860	54,057,620	43,788,187
Weighted average common shares outstanding, diluted (in shares)	126,458,860	54,057,620	43,788,187

Significant Accounting Polici_6

Significant Accounting Policies - Schedule of Organization and Offering Costs (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Amounts accrued and/or payable to Advisor by the Company	$ 607,610	$ 1,751
Advisor
Related Party Transaction [Line Items]
Amounts accrued and/or payable to Advisor by the Company	607,610	1,751
Advisor and Dealer Manager
Related Party Transaction [Line Items]
Total O&O costs incurred by the Advisor and dealer manager	1,058,658	94,486
Amounts previously reimbursed to the Advisor/dealer manager by the Company	451,048	0
Amounts of the contingent liability subject to payment by the Company only upon adequate gross offering proceeds being raised	$ 0	$ 92,735

Significant Accounting Polici_7

Significant Accounting Policies - Schedule of Fair Values of Derivatives (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Asset Derivatives	$ 0	$ 0
Liability Derivatives	7,501,983	9,750,909
Interest Rate Risk | Swaps
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Asset Derivatives	0	0
Liability Derivatives	$ 7,501,983	$ 9,750,909

Significant Accounting Polici_8

Significant Accounting Policies - Schedule of Effect of Derivative Instruments on the Consolidated Statement of Operations (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Change in net unrealized depreciation on derivative transactions	$ 2,248,926	$ (4,872,567)	$ (5,002,305)
Other expenses	2,024,070	1,702,655	229,731
Interest Rate Risk | Swaps
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Change in net unrealized depreciation on derivative transactions	2,248,926	(4,872,567)	(5,002,305)
Other expenses	$ 2,024,070	$ 1,702,655	$ 229,731

Investments - Schedule of Inves

Investments - Schedule of Investment Composition (Details) - USD ($)		Dec. 31, 2021		Dec. 31, 2020
Investment Holdings [Line Items]
Investments at Cost		$ 1,292,072,217		$ 572,347,137
Investments at Fair Value		$ 1,435,742,001		$ 659,982,724
Fair Value Percentage of Total Portfolio		100.00%		100.00%
Money Market Funds
Investment Holdings [Line Items]
Investments at Cost		$ 67,392,443	[1]	$ 11,172,727	[2]
Investments at Fair Value		$ 67,392,443	[1]	$ 11,172,727	[2]
Fair Value Percentage of Total Portfolio		4.80%		1.70%
Money Market Funds | Allspring Treasury Plus Money Market Fund - Institutional Class
Investment Holdings [Line Items]
Investments at Cost	[1]	$ 16,823,110
Investments at Fair Value	[1]	$ 16,823,110
Fair Value Percentage of Total Portfolio		1.20%
Money Market Funds | Fidelity Government Portfolio - Class I
Investment Holdings [Line Items]
Investments at Cost		$ 16,873,111	[1]	$ 10,100,000	[2]
Investments at Fair Value		$ 16,873,111	[1]	$ 10,100,000	[2]
Fair Value Percentage of Total Portfolio		1.20%		1.50%
Money Market Funds | First American Government Obligations Fund - Class X
Investment Holdings [Line Items]
Investments at Cost	[1]	$ 16,823,111
Investments at Fair Value	[1]	$ 16,823,111
Fair Value Percentage of Total Portfolio		1.20%
Money Market Funds | First American Government Obligations Fund - Class Z
Investment Holdings [Line Items]
Investments at Cost		$ 50,000	[1]	$ 1,072,720	[2]
Investments at Fair Value		$ 50,000	[1]	$ 1,072,720	[2]
Fair Value Percentage of Total Portfolio		0.00%		0.20%
Money Market Funds | JPMorgan US Government Money Market Fund - Class L
Investment Holdings [Line Items]
Investments at Cost	[1]	$ 16,823,111
Investments at Fair Value	[1]	$ 16,823,111
Fair Value Percentage of Total Portfolio		1.20%
Money Market Funds | Invesco Government & Agency Portfolio - Institutional Class
Investment Holdings [Line Items]
Investments at Cost	[2]			$ 7
Investments at Fair Value	[2]			$ 7
Fair Value Percentage of Total Portfolio				0.00%
Battery Storage
Investment Holdings [Line Items]
Investments at Cost		$ 11,288,841		$ 8,839,235
Investments at Fair Value		$ 10,747,811		$ 8,839,235
Fair Value Percentage of Total Portfolio		0.70%		1.30%
Battery Storage | Pacifica Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 11,288,841		$ 8,839,235
Investments at Fair Value		$ 10,747,811		$ 8,839,235
Fair Value Percentage of Total Portfolio		0.70%		1.30%
Biomass
Investment Holdings [Line Items]
Investments at Cost		$ 24,533,222		$ 23,236,352
Investments at Fair Value		$ 17,184,912		$ 23,236,352
Fair Value Percentage of Total Portfolio		1.20%		3.50%
Biomass | Eagle Valley Biomass Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 24,533,222		$ 23,236,352
Investments at Fair Value		$ 17,184,912		$ 23,236,352
Fair Value Percentage of Total Portfolio		1.20%		3.50%
Commercial Solar
Investment Holdings [Line Items]
Investments at Cost		$ 798,358,576		$ 327,593,799
Investments at Fair Value		$ 931,167,131		$ 400,405,397
Fair Value Percentage of Total Portfolio		64.90%		60.70%
Commercial Solar | Celadon Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 165,129,450
Investments at Fair Value		$ 187,410,880
Fair Value Percentage of Total Portfolio		13.10%
Commercial Solar | GEH Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 150,463,205		$ 114,253,479
Investments at Fair Value		$ 157,925,117		$ 124,637,707
Fair Value Percentage of Total Portfolio		11.00%		18.90%
Commercial Solar | Ponderosa Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 49,514,975
Investments at Fair Value		$ 59,577,751
Fair Value Percentage of Total Portfolio		4.10%
Commercial Solar | Sego Lily - Solar Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 107,621,275		$ 29,178,404
Investments at Fair Value		$ 122,272,431		$ 62,135,652
Fair Value Percentage of Total Portfolio		8.50%		9.40%
Commercial Solar | Trillium Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 74,764,309		$ 83,219,738
Investments at Fair Value		$ 101,432,185		$ 105,913,033
Fair Value Percentage of Total Portfolio		7.10%		16.10%
Commercial Solar | Other Commercial Solar Portfolios
Investment Holdings [Line Items]
Investments at Cost		$ 250,865,362		$ 67,933,619
Investments at Fair Value		$ 302,548,767		$ 70,814,994
Fair Value Percentage of Total Portfolio		21.10%		10.70%
Commercial Solar | Magnolia Sun Portfolio
Investment Holdings [Line Items]
Investments at Cost				$ 33,008,559
Investments at Fair Value				$ 36,904,011
Fair Value Percentage of Total Portfolio				5.60%
Wind
Investment Holdings [Line Items]
Investments at Cost		$ 321,509,864		$ 139,769,540
Investments at Fair Value		$ 340,034,522		$ 154,968,628
Fair Value Percentage of Total Portfolio		23.60%		23.50%
Wind | Sego Lily - Wind Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 117,410,390
Investments at Fair Value		$ 140,965,616
Fair Value Percentage of Total Portfolio		9.80%
Wind | Greenbacker Wind Holdings II Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 62,787,210		$ 33,834,320
Investments at Fair Value		$ 62,272,198		$ 35,839,967
Fair Value Percentage of Total Portfolio		4.30%		5.40%
Wind | Greenbacker Wind - HoldCo Portfolio
Investment Holdings [Line Items]
Investments at Cost		$ 84,674,188		$ 73,244,891
Investments at Fair Value		$ 78,025,844		$ 75,013,771
Fair Value Percentage of Total Portfolio		5.40%		11.40%
Wind | Other Wind Investments Portfolios
Investment Holdings [Line Items]
Investments at Cost		$ 56,638,076		$ 19,986,133
Investments at Fair Value		$ 58,770,864		$ 20,356,806
Fair Value Percentage of Total Portfolio		4.10%		3.10%
Wind | Greenbacker Wind Portfolio - Maine
Investment Holdings [Line Items]
Investments at Cost				$ 12,704,196
Investments at Fair Value				$ 23,758,084
Fair Value Percentage of Total Portfolio				3.60%
Other Investments
Investment Holdings [Line Items]
Investments at Cost		$ 35,034,396		$ 23,669,446
Investments at Fair Value		$ 35,243,259		$ 23,291,114
Fair Value Percentage of Total Portfolio		2.50%		3.50%
Other Investments | Other Portfolios
Investment Holdings [Line Items]
Investments at Cost		$ 35,034,396		$ 23,669,446
Investments at Fair Value		$ 35,243,259		$ 23,291,114
Fair Value Percentage of Total Portfolio		2.50%		3.50%
Energy Efficiency
Investment Holdings [Line Items]
Investments at Cost		$ 668,736		$ 738,348
Investments at Fair Value		$ 685,784		$ 741,581
Fair Value Percentage of Total Portfolio		0.10%		0.10%
Energy Efficiency | Other Energy Efficiency Portfolios
Investment Holdings [Line Items]
Investments at Cost		$ 668,736		$ 738,348
Investments at Fair Value		$ 685,784		$ 741,581
Fair Value Percentage of Total Portfolio		0.10%		0.10%
Secured Loans:
Investment Holdings [Line Items]
Investments at Cost		$ 33,286,139		$ 37,327,690
Investments at Fair Value		$ 33,286,139		$ 37,327,690
Fair Value Percentage of Total Portfolio		2.20%		5.70%
Secured Loans: | Chaberton Loan
Investment Holdings [Line Items]
Investments at Cost		$ 2,247,962
Investments at Fair Value		$ 2,247,962
Fair Value Percentage of Total Portfolio		0.20%
Secured Loans: | Encore Loan
Investment Holdings [Line Items]
Investments at Cost		$ 3,058,527		$ 10,606,725
Investments at Fair Value		$ 3,058,527		$ 10,606,725
Fair Value Percentage of Total Portfolio		0.20%		1.60%
Secured Loans: | Hudson Loan
Investment Holdings [Line Items]
Investments at Cost		$ 4,984,650		$ 6,021,402
Investments at Fair Value		$ 4,984,650		$ 6,021,402
Fair Value Percentage of Total Portfolio		0.30%		0.90%
Secured Loans: | Hudson II Loan
Investment Holdings [Line Items]
Investments at Cost		$ 4,227,098		$ 3,923,873
Investments at Fair Value		$ 4,227,098		$ 3,923,873
Fair Value Percentage of Total Portfolio		0.30%		0.60%
Secured Loans: | New Market Loan
Investment Holdings [Line Items]
Investments at Cost		$ 5,008,070		$ 5,007,350
Investments at Fair Value		$ 5,008,070		$ 5,007,350
Fair Value Percentage of Total Portfolio		0.30%		0.80%
Secured Loans: | Shepherd's Run Loan
Investment Holdings [Line Items]
Investments at Cost		$ 8,751,528
Investments at Fair Value		$ 8,751,528
Fair Value Percentage of Total Portfolio		0.60%
Secured Loans: | SE Solar Loan
Investment Holdings [Line Items]
Investments at Cost		$ 5,008,304		$ 5,005,244
Investments at Fair Value		$ 5,008,304		$ 5,005,244
Fair Value Percentage of Total Portfolio		0.30%		0.80%
Secured Loans: | TUUSSO Loan
Investment Holdings [Line Items]
Investments at Cost				$ 6,763,096
Investments at Fair Value				$ 6,763,096
Fair Value Percentage of Total Portfolio				1.00%
[1]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within this Consolidated Schedules of Investments.
[2]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within the Consolidated Schedules of Investments.

Investments - Investments by Ge

Investments - Investments by Geographic Areas (Details) - USD ($)	Dec. 31, 2021		Dec. 31, 2020
Investment Holdings [Line Items]
Investments at Cost	$ 1,292,072,217		$ 572,347,137
Investments at Fair Value	$ 1,435,742,001		$ 659,982,724
Fair Value Percentage of Total Portfolio	100.00%	[1],[2]	100.00%	[3],[4]
Investments in Money Market Funds
Investment Holdings [Line Items]
Investments at Cost	$ 67,392,443		$ 11,172,727
Investments at Fair Value	$ 67,392,443		$ 11,172,727
Fair Value Percentage of Total Portfolio	4.70%		1.70%
United States:
Investment Holdings [Line Items]
Investments at Cost	$ 1,223,076,638		$ 559,571,274
Investments at Fair Value	$ 1,366,599,672		$ 647,120,369
Fair Value Percentage of Total Portfolio	95.20%		98.00%
Canada:
Investment Holdings [Line Items]
Investments at Cost	$ 1,603,136		$ 1,603,136
Investments at Fair Value	$ 1,749,886		$ 1,689,628
Fair Value Percentage of Total Portfolio	0.10%		0.30%
East Region
Investment Holdings [Line Items]
Investments at Cost	$ 376,929,916		$ 148,159,362
Investments at Fair Value	$ 444,160,983		$ 168,616,615
Fair Value Percentage of Total Portfolio	30.90%		25.50%
Mid - West Region
Investment Holdings [Line Items]
Investments at Cost	$ 222,573,610		$ 120,709,771
Investments at Fair Value	$ 233,427,679		$ 127,384,880
Fair Value Percentage of Total Portfolio	16.30%		19.30%
Mountain Region
Investment Holdings [Line Items]
Investments at Cost	$ 268,907,355		$ 113,435,944
Investments at Fair Value	$ 286,693,236		$ 153,512,583
Fair Value Percentage of Total Portfolio	20.00%		23.30%
South Region
Investment Holdings [Line Items]
Investments at Cost	$ 105,516,478		$ 83,302,384
Investments at Fair Value	$ 111,030,877		$ 85,763,612
Fair Value Percentage of Total Portfolio	7.70%		13.00%
West Region
Investment Holdings [Line Items]
Investments at Cost	$ 249,149,279		$ 93,963,813
Investments at Fair Value	$ 291,286,897		$ 111,842,679
Fair Value Percentage of Total Portfolio	20.30%		16.90%
[1]	Percentages are based on net assets of $1,439,310,632 as of December 31, 2021.
[2]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within this Consolidated Schedules of Investments.
[3]	Percentages are based on net assets of $555,551,859 as of December 31, 2020.
[4]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within the Consolidated Schedules of Investments.

Investments - Schedule of Inv_2

Investments - Schedule of Investments by Industry (Details) - USD ($)	Dec. 31, 2021		Dec. 31, 2020
Investment Holdings [Line Items]
Investments at Cost	$ 1,292,072,217		$ 572,347,137
Investments at Fair Value	$ 1,435,742,001		$ 659,982,724
Fair Value Percentage of Total Portfolio	100.00%	[1],[2]	100.00%	[3],[4]
Battery Storage
Investment Holdings [Line Items]
Investments at Cost	$ 11,288,841		$ 8,839,235
Investments at Fair Value	$ 10,747,811		$ 8,839,235
Fair Value Percentage of Total Portfolio	0.70%		1.30%
Biomass
Investment Holdings [Line Items]
Investments at Cost	$ 24,533,222		$ 23,236,352
Investments at Fair Value	$ 17,184,912		$ 23,236,352
Fair Value Percentage of Total Portfolio	1.20%		3.50%
Commercial Solar
Investment Holdings [Line Items]
Investments at Cost	$ 798,358,576		$ 327,593,799
Investments at Cost, includes loans	831,644,715		364,921,489
Investments at Fair Value	931,167,131		400,405,397
Investments at fair value, includes loans	$ 964,453,270		$ 437,733,087
Fair Value Percentage of Total Portfolio	67.20%		66.40%
Wind
Investment Holdings [Line Items]
Investments at Cost	$ 321,509,864		$ 139,769,540
Investments at Fair Value	$ 340,034,522		$ 154,968,628
Fair Value Percentage of Total Portfolio	23.70%		23.50%
Other Investments
Investment Holdings [Line Items]
Investments at Cost	$ 35,034,396		$ 23,669,446
Investments at Fair Value	$ 35,243,259		$ 23,291,114
Fair Value Percentage of Total Portfolio	2.50%		3.50%
Energy Efficiency
Investment Holdings [Line Items]
Investments at Cost	$ 668,736		$ 738,348
Investments at Fair Value	$ 685,784		$ 741,581
Fair Value Percentage of Total Portfolio	0.00%		0.10%
Money Market Funds
Investment Holdings [Line Items]
Investments at Cost	$ 67,392,443		$ 11,172,727
Investments at Fair Value	$ 67,392,443		$ 11,172,727
Fair Value Percentage of Total Portfolio	4.70%		1.70%
[1]	Percentages are based on net assets of $1,439,310,632 as of December 31, 2021.
[2]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within this Consolidated Schedules of Investments.
[3]	Percentages are based on net assets of $555,551,859 as of December 31, 2020.
[4]	Refer to Note 3. Investments for discussion on the consolidation of certain underlying portfolios within the Consolidated Schedules of Investments.

Investments - Narrative (Detail

Investments - Narrative (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Commercial Solar
Summary of Investment Holdings [Line Items]
Loans included	$ 33,286,139	$ 37,327,690

Fair Value Measurements _ Inv_3

Fair Value Measurements — Investments - Schedule of Fair Value Measurements of Investments, by Major Class (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 1,435,742,001	$ 659,982,724
Financial liabilities fair value disclosure	(7,501,983)	(9,750,909)
Capital Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	1,749,886	1,689,628
Energy Efficiency Secured Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	380,640	398,640
Secured Loans - Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	33,286,139	37,327,690
Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	67,392,443	11,172,727
Open swap contracts - liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities fair value disclosure	(7,501,983)	(9,750,909)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	67,392,443	11,172,727
Financial liabilities fair value disclosure	0	0
Level 1 | Capital Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Level 1 | Energy Efficiency Secured Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Level 1 | Secured Loans - Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Level 1 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	67,392,443	11,172,727
Level 1 | Open swap contracts - liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities fair value disclosure	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Financial liabilities fair value disclosure	(7,501,983)	(9,750,909)
Level 2 | Capital Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Level 2 | Energy Efficiency Secured Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Level 2 | Secured Loans - Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Level 2 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Level 2 | Open swap contracts - liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities fair value disclosure	(7,501,983)	(9,750,909)
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	1,368,349,558	648,809,997	$ 475,175,871	$ 307,176,115
Financial liabilities fair value disclosure	0	0
Level 3 | Capital Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	1,749,886	1,689,628
Level 3 | Energy Efficiency Secured Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	380,640	398,640
Level 3 | Secured Loans - Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	33,286,139	37,327,690
Level 3 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Level 3 | Open swap contracts - liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities fair value disclosure	0	0
Limited Liability Company Member Interests
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	1,332,932,893	609,394,039
Limited Liability Company Member Interests | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Limited Liability Company Member Interests | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	0	0
Limited Liability Company Member Interests | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 1,332,932,893	$ 609,394,039	$ 449,981,086	$ 304,542,921

Fair Value Measurements _ Inv_4

Fair Value Measurements — Investments - Fair Value Measurement Inputs and Valuation Techniques (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 659,982,724
Ending balance	1,435,742,001	$ 659,982,724
Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	648,809,997	475,175,871	$ 307,176,115
Net change in unrealized appreciation on investments	56,023,470	51,377,370	27,296,880
Translation of assets and liabilities denominated in foreign currencies	10,727	92,019	7,589
Purchases	1,113,729,511	395,034,767	353,585,860
Cost adjustments	(440,266,245)	(212,742,142)	(161,551,945)
Sales and repayments of investments	(9,928,720)	(67,958,438)	(64,254,366)
Net realized gain (loss) on investments	(29,182)	7,830,550	12,915,738
Ending balance	1,368,349,558	648,809,997	475,175,871
Energy Efficiency - Secured Loans | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	398,640	479,140	551,640
Net change in unrealized appreciation on investments	0	0	0
Translation of assets and liabilities denominated in foreign currencies	0	0	0
Purchases	0	0	0
Cost adjustments	0	0	0
Sales and repayments of investments	(18,000)	(80,500)	(72,500)
Net realized gain (loss) on investments	0	0	0
Ending balance	380,640	398,640	479,140
Secured Loans - Other | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	37,327,690	23,103,690	0
Net change in unrealized appreciation on investments	0	0	0
Translation of assets and liabilities denominated in foreign currencies	0	0	0
Purchases	24,431,121	14,890,722	39,410,466
Cost adjustments	0	0	(2,056,776)
Sales and repayments of investments	(28,472,672)	(666,722)	(14,250,000)
Net realized gain (loss) on investments	0	0	0
Ending balance	33,286,139	37,327,690	23,103,690
Capital Stock | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,689,628	1,611,955	2,081,554
Net change in unrealized appreciation on investments	49,531	(14,346)	(477,188)
Translation of assets and liabilities denominated in foreign currencies	10,727	92,019	7,589
Purchases	0	0	0
Cost adjustments	0	0	0
Sales and repayments of investments	0	0	0
Net realized gain (loss) on investments	0	0	0
Ending balance	1,749,886	1,689,628	1,611,955
Limited Liability Company Member Interests
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	609,394,039
Ending balance	1,332,932,893	609,394,039
Limited Liability Company Member Interests | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	609,394,039	449,981,086	304,542,921
Net change in unrealized appreciation on investments	55,973,939	51,391,716	27,774,068
Translation of assets and liabilities denominated in foreign currencies	0	0	0
Purchases	1,089,298,390	380,144,045	314,175,394
Cost adjustments	(440,266,245)	(212,742,142)	(159,495,169)
Sales and repayments of investments	18,561,952	(67,211,216)	(49,931,866)
Net realized gain (loss) on investments	(29,182)	7,830,550	12,915,738
Ending balance	$ 1,332,932,893	$ 609,394,039	$ 449,981,086

Fair Value Measurements _ Inv_5

Fair Value Measurements — Investments - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net change in unrealized appreciation on investments and foreign currency translation	$ 56,034,197	$ 62,789,888	$ 27,304,469

Fair Value Measurements _ Inv_6

Fair Value Measurements — Investments - Schedule of Quantitative Information about Level 3 Fair Value Measurements (Details)	Dec. 31, 2021USD ($)year	Dec. 31, 2020USD ($)year	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 1,435,742,001	$ 659,982,724
Battery Storage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	10,747,811	8,839,235
Biomass
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	17,184,912	23,236,352
Wind
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	340,034,522	154,968,628
Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	35,243,259	23,291,114
Energy Efficiency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	685,784	741,581
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	1,368,349,558	648,809,997	$ 475,175,871	$ 307,176,115
Level 3 | Battery Storage
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 10,747,811	8,839,235
Level 3 | Battery Storage | Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0937
Level 3 | Battery Storage | Degradation In Production
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0216
Level 3 | Battery Storage | Useful Life
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	11
Level 3 | Biomass
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 17,184,912	23,236,352
Level 3 | Biomass | Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0825
Level 3 | Biomass | Degradation In Production
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0
Level 3 | Biomass | Useful Life
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	12
Level 3 | Commercial Solar
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 931,167,131	$ 400,405,397
Level 3 | Commercial Solar | Discount Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0350	0.0725
Level 3 | Commercial Solar | Discount Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0907	0.0859
Level 3 | Commercial Solar | Discount Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0763	0.0801
Level 3 | Commercial Solar | Degradation In Production
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input		0.0050
Level 3 | Commercial Solar | Degradation In Production | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0
Level 3 | Commercial Solar | Degradation In Production | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0050
Level 3 | Commercial Solar | Degradation In Production | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0050
Level 3 | Commercial Solar | Useful Life | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	9.2	8.5
Level 3 | Commercial Solar | Useful Life | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	39	40
Level 3 | Commercial Solar | Useful Life | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	33.6	33.7
Level 3 | Wind
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 340,034,522	$ 154,968,628
Level 3 | Wind | Discount Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0775	0.0775
Level 3 | Wind | Discount Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0843	0.0925
Level 3 | Wind | Discount Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0781	0.0842
Level 3 | Wind | Degradation In Production
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0	0
Level 3 | Wind | Useful Life | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	18.7	19.7
Level 3 | Wind | Useful Life | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	31	30.7
Level 3 | Wind | Useful Life | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	26.4	24.4
Level 3 | Other Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 35,243,259	$ 23,291,114
Level 3 | Energy Efficiency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 685,784	$ 741,581
Level 3 | Energy Efficiency | Degradation In Production
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0	0
Level 3 | Energy Efficiency | Useful Life | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	3.2	4.2
Level 3 | Energy Efficiency | Useful Life | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	4	5
Level 3 | Energy Efficiency | Useful Life | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input | year	3.6	4.6
Level 3 | Energy Efficiency | Market Yields
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.1025	0.1025
Level 3 | Secured Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments at Fair Value	$ 33,286,139	$ 37,327,690
Level 3 | Secured Loans | Market Yields | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0800	0.0800
Level 3 | Secured Loans | Market Yields | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.1000	0.1000
Level 3 | Secured Loans | Market Yields | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, measurement input	0.0848	0.0884

Related Party Agreements and _3

Related Party Agreements and Transaction Agreements - Narrative (Details)	Dec. 22, 2020USD ($)	Oct. 09, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 10, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2021USD ($)shares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)	Dec. 31, 2020USD ($)shares	Dec. 31, 2021USD ($)shares	Apr. 01, 2021USD ($)	Apr. 01, 2020
Related Party Agreements and Transactions Agreements
Management fees								$ 21,940,099	$ 10,364,635	$ 8,461,616
Management fee payable								2,271,687	1,055,600		$ 1,055,600	$ 2,271,687
Performance participation fee								4,672,078	4,571,927	0
Capital gain incentive distribution								0	8,052,116	170,000
Net increase (decrease) in net assets attributed to special unitholder								0	(1,154,308)	(5,270,670)
Performance participation fee payable								3,359,269	3,540,052		3,540,052	3,359,269
Performance participation fee waiver								0	(747,602)	0
Amounts accrued and/or payable to Advisor by the Company								607,610	1,751		1,751	607,610
Investments at Cost								1,292,072,217	572,347,137		572,347,137	1,292,072,217
Investments at Fair Value								1,435,742,001	659,982,724		659,982,724	1,435,742,001
Realized Investment Gains (Losses)								(29,182)	7,830,550	12,915,738
SC Distributors, LLC
Related Party Agreements and Transactions Agreements
Net increase (decrease) in net assets attributed to special unitholder									1,154,308	5,270,670
Payment for dealer manager fees								0	0	231,892
Sales commissions and fees								0	0	594,247
Greenbacker Capital Management LLC
Related Party Agreements and Transactions Agreements
Management fees								21,940,099	10,364,635	8,461,616
Management fee payable								2,271,687	1,055,600		1,055,600	2,271,687
Amounts accrued and/or payable to Advisor by the Company								$ 607,610	1,751		1,751	$ 607,610
Limited partner commitment		$ 5,000,000
Greenbacker Capital Management LLC | Fee Arrangement, Scenario One
Related Party Agreements and Transactions Agreements
Base management fees payable, monthly rate (percentage)								0.167%				0.167%
Base management fees payable, annual rate (percentage)								2.00%				2.00%
Base management fee, maximum								$ 50,000,000				$ 50,000,000
Asset, gross, including borrowing								$ 800,000,000				$ 800,000,000
Greenbacker Capital Management LLC | Fee Arrangement, Scenario Two
Related Party Agreements and Transactions Agreements
Base management fees payable, monthly rate (percentage)								0.14583%				0.14583%
Base management fees payable, annual rate (percentage)								1.75%				1.75%
Asset, gross, including borrowing								$ 1,500,000,000				$ 1,500,000,000
Greenbacker Capital Management LLC | Fee Arrangement, Scenario Three
Related Party Agreements and Transactions Agreements
Base management fees payable, monthly rate (percentage)								0.125%				0.125%
Base management fees payable, annual rate (percentage)								1.50%				1.50%
Greenbacker Capital Management LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								15.00%
Greenbacker Capital Management LLC | Private Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								0.50%
Special Unitholder
Related Party Agreements and Transactions Agreements
Percentage of performance participation fee												0.125
Hurdle rate, quarterly (percentage)														0.0150
Hurdle rate, annualized (percentage)														0.06
Loss carry forward initial amount												$ 0
Fee carryforward initial amount												$ 0
Performance participation fee, percentage of excess profits												1
Percentage of sum of hurdle amount and catch-up amount												0.125
Percentage of liquidation performance participation fee												0.200
Liquidation performance participation fee payable, term (in days)												30 days
Net increase (decrease) in net assets attributed to special unitholder									(1,154,308)
Performance participation fee waiver									(747,602)
AEC Companies
Related Party Agreements and Transactions Agreements
Investments at Cost								$ 668,736				$ 668,736
Investments at Fair Value								685,784				685,784
Greenbacker Development Opportunities Fund I, LP
Related Party Agreements and Transactions Agreements
Investments at Cost								7,242,495				7,242,495
Investments at Fair Value								7,580,119				7,580,119
Limited partner commitment									6,075,000		6,075,000		$ 7,500,000
Funded commitment								7,242,495				7,242,495
Greenbacker Development Opportunities Fund I, LP | Greenbacker Development Opportunities GP I, LLC
Related Party Agreements and Transactions Agreements
Interest in general partner economics (percentage)		10.00%
Greenbacker Renewable Opportunity Zone Fund LLC | Sell Gliden Solar, LLC
Related Party Agreements and Transactions Agreements
Related party transaction, amounts of transaction	$ 12,752,215
Realized Investment Gains (Losses)	$ 1,608,644							(34,290)
Receivable and included Investment sales								0	4,758,243		4,758,243	0
Greenbacker Renewable Opportunity Zone Fund LLC | Sell Sol Phoenix Solar LLC
Related Party Agreements and Transactions Agreements
Related party transaction, amounts of transaction			$ 17,175,554		$ 16,874,761	$ 18,060,275
Realized Investment Gains (Losses)									141,974		$ 7,636,438
Proceeds from sale of investment projects					$ 1,500,000		$ 8,184,393
Greenbacker Renewable Opportunity Zone Fund LLC | Sell Fremont CO I, LLC
Related Party Agreements and Transactions Agreements
Related party transaction, amounts of transaction				$ 5,272,475		$ 5,335,009
Realized Investment Gains (Losses)									$ (32,576)	794,967
Proceeds from sale of investment projects										$ 2,531,000
Minimum | Greenbacker Capital Management LLC | Fee Arrangement, Scenario Two
Related Party Agreements and Transactions Agreements
Asset, gross, including borrowing								800,000,001				800,000,001
Minimum | Special Unitholder
Related Party Agreements and Transactions Agreements
Loss carry forward initial amount												0
Fee carryforward initial amount												0
Maximum | Greenbacker Capital Management LLC | Fee Arrangement, Scenario Two
Related Party Agreements and Transactions Agreements
Asset, gross, including borrowing								$ 1,500,000,000				$ 1,500,000,000
Class A Shares | Greenbacker Capital Management LLC
Related Party Agreements and Transactions Agreements
Common unit, issued (in shares) | shares								23,601	23,601		23,601	23,601
Class A Shares | Minimum | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								1.75%
Class A Shares | Maximum | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								7.00%
Class C shares | SC Distributors, LLC
Related Party Agreements and Transactions Agreements
Percentage of distribution fee								0.000022				0.000022
Class C shares | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of underwriting compensation								0.10				0.10
Class C shares | Minimum | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								1.75%
Class C shares | Maximum | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								7.00%
Class P-A Shares | Minimum | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								1.75%
Class P-A Shares | Maximum | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								7.00%
Class I Shares | Minimum | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								1.75%
Class I Shares | Maximum | SC Distributors, LLC | Terminated Registration Statements Offering
Related Party Agreements and Transactions Agreements
Percentage of reimbursement out of gross offering proceeds								7.00%
Class P-D shares | Greenbacker Capital Management LLC
Related Party Agreements and Transactions Agreements
Common unit, issued (in shares) | shares								2,776	0		0	2,776

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($)

Apr. 01, 2021

Mar. 31, 2021

Mar. 18, 2020

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Sep. 28, 2021

Feb. 26, 2021

Nov. 30, 2020

Oct. 31, 2020

Jan. 30, 2020

Dec. 06, 2019

Sep. 30, 2019

Jun. 20, 2019

Dec. 31, 2018

Jun. 30, 2018

Jan. 05, 2018

Debt Instrument [Line Items]

Credit facility, drawn down amount

$ 79,413,622

$ 86,501,654

Aggregate principal amount available

$ 130,322,841

120,322,841

Fixed swap rate (percentage)

1.604%

Repayments of lines of credit

$ 7,993,991

16,584,956

$ 14,255,676

New Credit Facility

Debt Instrument [Line Items]

Credit facility, drawn down amount

79,413,622

86,501,654

Aggregate principal amount available

97,822,841

97,822,841

$ 97,822,841

Revolving Credit Facility

Debt Instrument [Line Items]

Credit facility, drawn down amount

0

0

Aggregate principal amount available

$ 32,500,000

$ 22,500,000

$ 32,500,000

Previous Credit Facility | New Credit Facility | GREC Entity Holdco LLC

Debt Instrument [Line Items]

Line of credit facility, maximum borrowing capacity

$ 60,000,000

Credit facility, drawn down amount

$ 25,700,000

New Credit Facility (the "Credit Facility")

Debt Instrument [Line Items]

Commitment fees rate (percentage)

0.50%

New Credit Facility (the "Credit Facility") | New Credit Facility | GREC Entity Holdco LLC

Debt Instrument [Line Items]

Line of credit facility, maximum borrowing capacity

$ 110,000,000

Credit facility, drawn down amount

$ 90,700,000

$ 58,300,000

New Credit Facility (the "Credit Facility") | New Credit Facility | London Interbank Offered Rate (LIBOR)

Debt Instrument [Line Items]

Margin for LIBOR rate (percentage)

1.75%

Loans Payable | New Credit Facility | Interest Rate Swap | GREC Entity Holdco LLC

Debt Instrument [Line Items]

Derivative, amount of hedged item

$ 20,900,650

Fixed swap rate (percentage)

2.26%

Facility 2 Term Loan | New Credit Facility | Interest Rate Swap | GREC Entity Holdco LLC

Debt Instrument [Line Items]

Derivative, amount of hedged item

$ 29,624,945

Fixed swap rate (percentage)

2.65%

Facility 3 Term Loan | New Credit Facility | Interest Rate Swap | GREC Entity Holdco LLC

Debt Instrument [Line Items]

Derivative, amount of hedged item

$ 4,180,063

Fixed swap rate (percentage)

2.97%

Facility 4 Term Loan | New Credit Facility | Interest Rate Swap | GREC Entity Holdco LLC

Debt Instrument [Line Items]

Derivative, amount of hedged item

$ 38,203,507

Fixed swap rate (percentage)

2.69%

Facility 5 Term Loan | New Credit Facility | Interest Rate Swap | GREC Entity Holdco LLC

Debt Instrument [Line Items]

Derivative, amount of hedged item

$ 7,068,965

Fixed swap rate (percentage)

1.64%

LC Facility | Revolving Credit Facility

Debt Instrument [Line Items]

Line of credit facility, maximum borrowing capacity

$ 22,500,000

$ 15,000,000

Credit facility, drawn down amount

$ 5,600,000

Repayments of lines of credit

$ 1,900,000

Collateral, percentage of outstanding obligation

100.00%

Line of credit, fees (percentage)

0.75%

2.25%

Borrowings - Schedule of Borrow

Borrowings - Schedule of Borrowings (Details) - USD ($)	Dec. 31, 2021	Sep. 28, 2021	Dec. 31, 2020	Nov. 30, 2020
Debt Instrument [Line Items]
Aggregate Principal Amount Available	$ 130,322,841		$ 120,322,841
Principal Amount Outstanding	82,151,509		90,145,500
Carrying Value	82,151,509		90,145,500
Deferred Financing Costs	2,737,887		3,643,846
Term note payable, net of financing costs	79,413,622		86,501,654
New Credit Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Available	97,822,841		97,822,841	$ 97,822,841
Principal Amount Outstanding	82,151,509		90,145,500
Carrying Value	82,151,509		90,145,500
Deferred Financing Costs	2,737,887		3,643,846
Term note payable, net of financing costs	79,413,622		86,501,654
LC Facility
Debt Instrument [Line Items]
Aggregate Principal Amount Available	32,500,000	$ 32,500,000	22,500,000
Principal Amount Outstanding	0		0
Carrying Value	0		0
Deferred Financing Costs	0		0
Term note payable, net of financing costs	$ 0		$ 0

Borrowings - Schedule of Line o

Borrowings - Schedule of Line of Credit Facilities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Credit Facility commitment fee	$ 423,075	$ 361,373	$ 43,087
Credit Facility loan interest	1,659,715	2,081,996	1,360,409
Amortization of deferred financing costs	905,959	576,464	226,742
Other	0	0	1,182,564
Total	$ 2,988,749	$ 3,019,833	$ 2,812,802
Weighted average interest rate on Credit Facility	1.88%	2.61%	4.32%
Weighted average outstanding balance of Credit Facility	$ 87,020,554	$ 74,831,946	$ 53,753,277

Borrowings - Schedule of Maturi

Borrowings - Schedule of Maturities of Long-term Debt (Details)	Dec. 31, 2021USD ($)
Maturities of Long-term Debt [Abstract]
2022	$ 7,954,526
2023	8,098,085
2024	8,245,188
2025	57,853,710
2026	0
Thereafter	0
Long-term debt	$ 82,151,509

Members' Equity - Narrative (De

Members' Equity - Narrative (Details)	3 Months Ended				12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020shares	Dec. 31, 2021shares	Nov. 30, 2020USD ($)	Sep. 30, 2020	Dec. 31, 2019shares	Jun. 04, 2019USD ($)
Distribution Made to Limited Partner [Line Items]
Total shares authorized (in shares)					400,000,000
Common stock of class A, C, I, P-A, P-D, P-S, P-T and P-I, shares authorized (in shares)				350,000,000	350,000,000
Preferred stock, shares authorized (in shares)				50,000,000	50,000,000
Preferred stock, shares issued (in shares)				0	0			0
Preferred stock, shares outstanding (in shares)				0	0			0
Repurchase limit under share repurchase program (in percentage)							5.00%
Stock repurchase limit, percentage of weighted average number of shares of prior fiscal quarters	0.0500	0.0375	0.0250	0.01875
Stock repurchase limit, percentage of weighted average number of shares during any 12-month period	0.2000
Distribution Reinvestment Plan
Distribution Made to Limited Partner [Line Items]
Offering a maximum shares of common stock | $						$ 20,000,000			$ 10,000,000
Minimum written notice period for termination (in days)					10 days
Shares issued (in shares)				3,262,718	4,680,971
Distribution Reinvestment Plan | Class A Shares
Distribution Made to Limited Partner [Line Items]
Shares issued (in shares)				2,024,783	2,438,154
Distribution Reinvestment Plan | Class C shares
Distribution Made to Limited Partner [Line Items]
Shares issued (in shares)				316,527	409,657
Distribution Reinvestment Plan | Class I Shares
Distribution Made to Limited Partner [Line Items]
Shares issued (in shares)				921,408	1,152,785
Distribution Reinvestment Plan | Class P-A shares
Distribution Made to Limited Partner [Line Items]
Shares issued (in shares)					16,432
Distribution Reinvestment Plan | Class P-I Shares
Distribution Made to Limited Partner [Line Items]
Shares issued (in shares)					411,369
Distribution Reinvestment Plan | Class P-D shares
Distribution Made to Limited Partner [Line Items]
Shares issued (in shares)					1,143
Distribution Reinvestment Plan | Class P-S shares
Distribution Made to Limited Partner [Line Items]
Shares issued (in shares)					248,961
Distribution Reinvestment Plan | Class P-T shares
Distribution Made to Limited Partner [Line Items]
Shares issued (in shares)					2,470

Members' Equity - Schedule of S

Members' Equity - Schedule of Shares Issued and Outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	62,870,347	47,889,610
Shares sold during the period (in shares)	103,638,424	16,168,757
Shares issued through reinvestment of distributions during the period (in shares)	1,418,253	774,551
Shares repurchased during the period (in shares)	(2,538,197)	(1,962,300)
Shares transferred during the period (in shares)	(1,308)	(271)
Ending balance (in shares)	165,387,519	62,870,347
Class A Shares
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	16,844,129	17,210,016
Shares sold during the period (in shares)	0	12,964
Shares issued through reinvestment of distributions during the period (in shares)	413,371	436,348
Shares repurchased during the period (in shares)	(661,926)	(815,199)
Shares transferred during the period (in shares)	(15,016)	0
Ending balance (in shares)	16,580,558	16,844,129
Class C shares
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	2,734,661	2,718,475
Shares sold during the period (in shares)	0	0
Shares issued through reinvestment of distributions during the period (in shares)	93,130	95,536
Shares repurchased during the period (in shares)	(85,828)	(66,086)
Shares transferred during the period (in shares)	0	(13,264)
Ending balance (in shares)	2,741,963	2,734,661
Class I Shares
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	6,526,001	6,693,658
Shares sold during the period (in shares)	0	5,783
Shares issued through reinvestment of distributions during the period (in shares)	231,377	242,963
Shares repurchased during the period (in shares)	(296,575)	(429,396)
Shares transferred during the period (in shares)	(11,310)	12,993
Ending balance (in shares)	6,449,493	6,526,001
Class P-A shares
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	55,264	18,109
Shares sold during the period (in shares)	711,897	37,155
Shares issued through reinvestment of distributions during the period (in shares)	16,432	0
Shares repurchased during the period (in shares)	0	0
Shares transferred during the period (in shares)	0	0
Ending balance (in shares)	783,593	55,264
Class P-I Shares
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	36,710,292	21,249,352
Shares sold during the period (in shares)	56,416,202	16,112,855
Shares issued through reinvestment of distributions during the period (in shares)	411,369	(296)
Shares repurchased during the period (in shares)	(1,493,868)	(651,619)
Shares transferred during the period (in shares)	25,018	0
Ending balance (in shares)	92,069,013	36,710,292
Class P-D shares
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	0
Shares sold during the period (in shares)	197,405
Shares issued through reinvestment of distributions during the period (in shares)	1,143
Shares repurchased during the period (in shares)	0
Shares transferred during the period (in shares)	0
Ending balance (in shares)	198,548	0
Class P-S shares
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	0
Shares sold during the period (in shares)	46,075,796
Shares issued through reinvestment of distributions during the period (in shares)	248,961
Shares repurchased during the period (in shares)	0
Shares transferred during the period (in shares)	0
Ending balance (in shares)	46,324,757	0
Class P-T shares
Increase (Decrease) In Shares Outstanding [Roll Forward]
Beginning balance (in shares)	0
Shares sold during the period (in shares)	237,124
Shares issued through reinvestment of distributions during the period (in shares)	2,470
Shares repurchased during the period (in shares)	0
Shares transferred during the period (in shares)	0
Ending balance (in shares)	239,594	0

Members' Equity - Schedule of R

Members' Equity - Schedule of Reinvestment of Distributions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	$ 928,286,442	$ 144,795,253	$ 97,341,397
Proceeds from Shares Issued through Reinvestment of Distributions	12,290,976	6,647,021	6,752,677
Class A Shares
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	0	110,970	5,256,053
Proceeds from Shares Issued through Reinvestment of Distributions	3,511,041	3,755,174	3,944,111
Class C shares
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	0	0	3,651,717
Proceeds from Shares Issued through Reinvestment of Distributions	768,984	802,289	733,788
Class I Shares
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	0	49,850	3,773,270
Proceeds from Shares Issued through Reinvestment of Distributions	1,964,922	2,089,430	2,074,778
Class P-A shares
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	6,210,692	323,750	22,875
Proceeds from Shares Issued through Reinvestment of Distributions	142,773	0	0
Class P-I Shares
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	504,228,647	144,310,683	84,637,482
Proceeds from Shares Issued through Reinvestment of Distributions	3,648,652	128	0
Class P-D shares
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	1,774,641	0	0
Proceeds from Shares Issued through Reinvestment of Distributions	10,264	0	0
Class P-S shares
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	413,941,487	0	0
Proceeds from Shares Issued through Reinvestment of Distributions	2,222,218	0	0
Class P-T shares
Distribution Made to Limited Partner [Line Items]
Proceeds from Shares Sold	2,130,975	0	0
Proceeds from Shares Issued through Reinvestment of Distributions	$ 22,122	$ 0	$ 0

Distributions - Schedule of Dis

Distributions - Schedule of Distributions (Details) - $ / shares	3 Months Ended								7 Months Ended	12 Months Ended	16 Months Ended	18 Months Ended
	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Nov. 30, 2020	Oct. 31, 2018	Mar. 30, 2022	Apr. 30, 2020
Class A Shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)	$ 0.00167	$ 0.00167	$ 0.00168	$ 0.00169	$ 0.00168	$ 0.00166	$ 0.00166	$ 0.00165	$ 0.00152	$ 0.00167		$ 0.00167
Class A Shares | Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)											$ 0.00152
Class C Shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)	0.00163	0.00163	0.00164	0.00164	0.00168	0.00166	0.00166	0.00165	0.00149	0.00163		0.00163
Class C Shares | Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)											0.00149
Class I Shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)	0.00167	0.00167	0.00168	0.00169	0.00168	0.00166	0.00166	0.00165	0.00152	0.00167		0.00167
Class I Shares | Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)											0.00152
Class P-A shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)	0	0.00160	0.00160	0.00160	0.00160	0.00158	0	0	0.00153	0		0.00165
Class P-A shares | Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)											0.00152
Class P-I Shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)	0.00159	0.00158	0.00160	0.00160	0.00160	0.00158	0	0	0.00158	0.00158		0.00158
Class P-I Shares | Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)											0.00158
Class P-D shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)	0	0	0	0	0	0	0	0	0	0		0
Class P-D shares | Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)											0.00158
Class P-T shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)	0	0	0	0	0	0	0	0	0	0		0
Class P-T shares | Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)											0.00158
Class P-S shares
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0		$ 0
Class P-S shares | Subsequent Event
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Distributions paid (in dollars per share)											$ 0.00158

Distributions - Dividends Decla

Distributions - Dividends Declared (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	$ 58,825,112	$ 24,392,276	$ 19,132,212
Values of Shares Issued under DRP	12,289,558	6,646,246	6,751,893
Total	71,114,670	31,038,522	25,884,105
Pay Date #1
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	2,555,800
Values of Shares Issued under DRP	538,241
Total	3,094,041
Pay Date #2
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	3,063,308
Values of Shares Issued under DRP	487,868
Total	3,551,176
Pay Date #3
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	4,783,092
Values of Shares Issued under DRP	523,715
Total	5,306,807
Pay Date #4
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	4,733,419
Values of Shares Issued under DRP	565,208
Total	5,298,627
Pay Date #5
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	4,762,355
Values of Shares Issued under DRP	886,124
Total	5,648,479
Pay Date #6
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	4,709,348
Values of Shares Issued under DRP	960,096
Total	5,669,444
Pay Date #7
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	5,217,796
Values of Shares Issued under DRP	1,071,227
Total	6,289,023
Pay Date #8
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	5,423,345
Values of Shares Issued under DRP	1,145,375
Total	6,568,720
Pay Date #9
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	5,516,811
Values of Shares Issued under DRP	1,229,494
Total	6,746,305
Pay Date #10
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	5,946,262
Values of Shares Issued under DRP	1,463,710
Total	7,409,972
Pay Date #11
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	5,938,698
Values of Shares Issued under DRP	1,662,579
Total	7,601,277
Pay Date #12
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash	6,174,878
Values of Shares Issued under DRP	1,755,921
Total	$ 7,930,799
Pay Date #13
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		1,788,542
Values of Shares Issued under DRP		603,697
Total		2,392,239
Pay Date #14
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		1,733,243
Values of Shares Issued under DRP		561,984
Total		2,295,227
Pay Date #15
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		1,890,493
Values of Shares Issued under DRP		593,200
Total		2,483,693
Pay Date #16
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		1,838,747
Values of Shares Issued under DRP		578,258
Total		2,417,005
Pay Date #17
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		1,829,752
Values of Shares Issued under DRP		551,563
Total		2,381,315
Pay Date #18
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		1,827,301
Values of Shares Issued under DRP		532,220
Total		2,359,521
Pay Date #19
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		2,133,835
Values of Shares Issued under DRP		548,210
Total		2,682,045
Pay Date #20
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		2,157,292
Values of Shares Issued under DRP		546,746
Total		2,704,038
Pay Date #21
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		2,178,934
Values of Shares Issued under DRP		529,183
Total		2,708,117
Pay Date #22
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		2,285,549
Values of Shares Issued under DRP		539,435
Total		2,824,984
Pay Date #23
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		2,281,547
Values of Shares Issued under DRP		524,274
Total		2,805,821
Pay Date #24
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash		2,447,041
Values of Shares Issued under DRP		537,476
Total		$ 2,984,517
Pay Date #25
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,317,325
Values of Shares Issued under DRP			583,571
Total			1,900,896
Pay Date #26
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,247,614
Values of Shares Issued under DRP			552,615
Total			1,800,229
Pay Date #27
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,452,785
Values of Shares Issued under DRP			611,200
Total			2,063,985
Pay Date #28
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,438,057
Values of Shares Issued under DRP			600,614
Total			2,038,671
Pay Date #29
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,553,801
Values of Shares Issued under DRP			622,584
Total			2,176,385
Pay Date #30
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,764,525
Values of Shares Issued under DRP			383,627
Total			2,148,152
Pay Date #31
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,850,929
Values of Shares Issued under DRP			393,237
Total			2,244,166
Pay Date #32
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,664,451
Values of Shares Issued under DRP			613,333
Total			2,277,784
Pay Date #33
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,647,967
Values of Shares Issued under DRP			589,581
Total			2,237,548
Pay Date #34
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,716,132
Values of Shares Issued under DRP			609,283
Total			2,325,415
Pay Date #35
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,693,670
Values of Shares Issued under DRP			587,119
Total			2,280,789
Pay Date #36
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Paid in Cash			1,784,956
Values of Shares Issued under DRP			605,129
Total			$ 2,390,085

Distributions - Schedule of Cas

Distributions - Schedule of Cash Distributions Paid (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Distributions Made to Members or Limited Partners [Abstract]
Cash from operations	$ 0	$ 1,645,856	$ 4,213,803
Offering proceeds	55,097,266	22,149,268	14,393,447
Total cash distributions	$ 55,097,266	$ 23,795,124	$ 18,607,250

Income Taxes - Schedule of Comp

Income Taxes - Schedule of Components of Income Tax Provision (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
Current, US federal	$ 0	$ 0	$ 0
Current, State and local	0	0	0
Current, Foreign jurisdiction	0	0	0
Current, Provision for income taxes	0	0	0
Current, Change in valuation allowance	0	0	0
Current, Provision for income taxes, net	0	0	0
Deferred
Deferred, US federal	5,075,307	9,454,902	5,658,918
Deferred, State and local	2,946,388	2,716,238	382,931
Deferred, Foreign jurisdiction	0	0	0
Deferred, Provision for income taxes	8,021,695	12,171,140	6,041,849
Deferred, Change in valuation allowance	817,262	(803,627)	1,231,693
Deferred, Provision for income taxes, net	8,838,957	11,367,513	7,273,542
Total
U.S. federal	5,075,307	9,454,902	5,658,918
State and local	2,946,388	2,716,238	382,931
Foreign jurisdiction	0	0	0
Provision for income taxes	8,021,695	12,171,140	6,041,849
Change in valuation allowance	817,262	(803,627)	1,231,693
Provision for income taxes, net	$ 8,838,957	$ 11,367,513	$ 7,273,542

Income Taxes - Schedule of Effe

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Taxes at statutory U.S. federal income tax rate	$ 10,890,547	$ 11,532,973	$ 7,125,202
Permanent differences (GREC LLC and other)	347,555	(1,396,678)	1,387,056
State income taxes, net of federal benefit	2,253,655	2,623,353	1,504,182
Write off state credits	334,079	634,229	0
Rate changes	0	0	(1,121,251)
Return to provision and other adjustments	(1,850,554)	(257,314)	(2,606,695)
Federal tax credits	(3,953,587)	(965,423)	(246,645)
Change in valuation allowance	817,262	(803,627)	1,231,693
Provision for income taxes, net	$ 8,838,957	$ 11,367,513	$ 7,273,542
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Taxes at statutory U.S. federal income tax rate (percentage)	21.00%	21.00%	21.00%
Permanent differences (GREC LLC and other) (percentage)	0.70%	(2.50%)	4.10%
State income taxes, net of federal benefit (percentage)	4.30%	4.80%	4.40%
Write off state credits (percentage)	0.60%	1.20%	0.00%
Rate changes (percentage)	0.00%	0.00%	(3.30%)
Return to provision and other adjustments (percentage)	(3.60%)	(0.50%)	(7.70%)
Federal tax credits (percentage)	(7.60%)	(1.80%)	(0.70%)
Change in valuation allowance (percentage)	1.60%	(1.50%)	3.60%
Actual provision for income taxes (percentage)	17.00%	20.70%	21.40%

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Amortization	$ 42,799	$ 48,179
Disallowed interest	4,731,734	0
Net operating losses	60,652,197	39,397,236
Federal and state tax credits	11,996,064	7,120,567
Unrealized gains	(102,617,534)	(63,739,027)
Deferred tax liabilities	(25,194,740)	(17,173,045)
Less: valuation allowance	(1,512,356)	(695,093)
Deferred tax liabilities, net	$ (26,707,096)	$ (17,868,138)

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Deferred tax assets, valuation allowance	$ 1,512,356	$ 695,093
Valuation allowance increase amount	$ 817,262
Actual provision for income taxes	17.00%	20.70%	21.40%
Domestic Tax Authority | Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 228,673,606
Tax credit carryforward	11,996,064
Domestic Tax Authority | Internal Revenue Service (IRS) | Operating Loss Carryforwards Expiration Year, Unlimited
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	179,166,225
Domestic Tax Authority | Internal Revenue Service (IRS) | Operating Loss Carryforwards Expiration Year, Expire in 2034 Through 2037
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	49,507,381
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	234,637,050
Tax credit carryforward	0
State and Local Jurisdiction | Operating Loss Carryforwards Expiration Year, Unlimited
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	28,357,352
State and Local Jurisdiction | Operating Loss Carryforwards Expiration Year, Expire in 2022 Through 2041
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 206,279,698

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details)	Dec. 31, 2021USD ($)entity
Other Commitments [Line Items]
Number of entities participating in funding commitment | entity	42
Performance Guarantee | Renewable Energy Credit Forward Contract
Other Commitments [Line Items]
Guarantor obligations	$ 0
Parent Company Guarantee
Other Commitments [Line Items]
Guarantor obligations	114,400,000
42 Operating Entities
Other Commitments [Line Items]
Investment outstanding balance	540,200,000
Operating Entities Individually A Party
Other Commitments [Line Items]
Investment outstanding balance	$ 1,038,200,000

Financial Highlights - Schedule

Financial Highlights - Schedule of Financial Highlights (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Roll Forward]
Net increase in net assets attributed to common members (in dollars per share)	$ 0.34	$ 0.81	$ 0.61
Common members’ equity at end of period	$ 1,439,310,632	$ 555,551,859	$ 415,637,460	$ 314,777,709
Common shares outstanding at end of period (in shares)	165,387,519	62,870,347	47,889,610
Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 1,439,310,632	$ 555,551,859	$ 408,739,652	$ 312,980,571
Class A Shares
Earnings Per Share [Roll Forward]
Net Asset Value at beginning of period (in dollars per share)	$ 8.61	$ 8.40	$ 8.40
Net investment income (in dollars per share)	0.02	0.16	0.17
Net realized and unrealized gain on investments and swap contracts (in dollars per share)	0.46	0.99	0.68
Change in translation of assets and liabilities denominated in foreign currencies (in dollars per share)	0	0	0
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (in dollars per share)	(0.14)	(0.34)	(0.24)
Distributions from net investment income (in dollars per share)	0	(0.03)	(0.10)
Distributions from offering proceeds (in dollars per share)	(0.56)	(0.54)	(0.51)
Offering costs and deferred sales commissions		0	(0.02)
Other (in dollars per share)	(0.07)	(0.03)	0.02
Net decrease in members' equity attributed to common shares (in dollars per share)	(0.63)	(0.60)	(0.61)
Net Asset Value at end of period (in dollars per share)	$ 8.32	$ 8.61	$ 8.40
Common shares outstanding at end of period (in shares)	16,580,558	16,844,129	17,210,016
Ratio/supplemental data for common shares (annualized)
Total return attributed to common shares based on net asset value (percentage)	3.29%	9.56%	7.30%
Ratio of net investment income to average net assets (percentage)	0.25%	1.92%	2.01%
Ratio of operating expense to average net assets (percentage)	3.68%	5.12%	4.01%
Ratio of operating expenses to average net assets after performance fee waiver (percentage)		4.96%
Portfolio turnover rate (percentage)	0.98%	12.35%	14.04%
Class A Shares | Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 137,994,947	$ 144,978,110	$ 144,540,863
Class C Shares
Earnings Per Share [Roll Forward]
Net Asset Value at beginning of period (in dollars per share)	$ 8.35	$ 8.23	$ 8.21
Net investment income (in dollars per share)	0.02	0.16	0.17
Net realized and unrealized gain on investments and swap contracts (in dollars per share)	0.46	0.99	0.68
Change in translation of assets and liabilities denominated in foreign currencies (in dollars per share)	0	0	0
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (in dollars per share)	(0.14)	(0.34)	(0.24)
Distributions from net investment income (in dollars per share)	0	(0.03)	(0.10)
Distributions from offering proceeds (in dollars per share)	(0.54)	(0.53)	(0.50)
Offering costs and deferred sales commissions		(0.09)	(0.05)
Other (in dollars per share)	(0.02)	(0.04)	0.06
Net decrease in members' equity attributed to common shares (in dollars per share)	(0.56)	(0.69)	(0.59)
Net Asset Value at end of period (in dollars per share)	$ 8.13	$ 8.35	$ 8.23
Common shares outstanding at end of period (in shares)	2,741,963	2,734,661	2,718,475
Ratio/supplemental data for common shares (annualized)
Total return attributed to common shares based on net asset value (percentage)	4.03%	8.49%	7.54%
Ratio of net investment income to average net assets (percentage)	0.26%	1.97%	2.02%
Ratio of operating expense to average net assets (percentage)	3.77%	5.26%	4.04%
Ratio of operating expenses to average net assets after performance fee waiver (percentage)		5.09%
Portfolio turnover rate (percentage)	0.98%	12.35%	14.04%
Class C Shares | Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 22,290,310	$ 22,836,128	$ 22,364,784
Class I Shares
Earnings Per Share [Roll Forward]
Net Asset Value at beginning of period (in dollars per share)	$ 8.61	$ 8.40	$ 8.40
Net investment income (in dollars per share)	0.02	0.16	0.17
Net realized and unrealized gain on investments and swap contracts (in dollars per share)	0.46	0.99	0.68
Change in translation of assets and liabilities denominated in foreign currencies (in dollars per share)	0	0	0
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (in dollars per share)	(0.14)	(0.34)	(0.24)
Distributions from net investment income (in dollars per share)	0	(0.03)	(0.10)
Distributions from offering proceeds (in dollars per share)	(0.56)	(0.54)	(0.51)
Offering costs and deferred sales commissions		0	(0.03)
Other (in dollars per share)	(0.07)	(0.03)	0.03
Net decrease in members' equity attributed to common shares (in dollars per share)	(0.63)	(0.60)	(0.61)
Net Asset Value at end of period (in dollars per share)	$ 8.32	$ 8.61	$ 8.40
Common shares outstanding at end of period (in shares)	6,449,493	6,526,001	6,693,658
Ratio/supplemental data for common shares (annualized)
Total return attributed to common shares based on net asset value (percentage)	3.29%	9.51%	7.04%
Ratio of net investment income to average net assets (percentage)	0.25%	1.92%	1.99%
Ratio of operating expense to average net assets (percentage)	3.67%	5.13%	3.98%
Ratio of operating expenses to average net assets after performance fee waiver (percentage)		4.96%
Portfolio turnover rate (percentage)	0.98%	12.35%	14.04%
Class I Shares | Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 53,665,823	$ 56,156,327	$ 56,217,673
Class P-A shares
Earnings Per Share [Roll Forward]
Net Asset Value at beginning of period (in dollars per share)	$ 8.70	$ 8.44	$ 8.40
Net investment income (in dollars per share)	0.02	0.16	0.17
Net realized and unrealized gain on investments and swap contracts (in dollars per share)	0.46	0.99	0.68
Change in translation of assets and liabilities denominated in foreign currencies (in dollars per share)	0	0	0
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (in dollars per share)	(0.14)	(0.34)	(0.24)
Distributions from net investment income (in dollars per share)	0	(0.03)	(0.10)
Distributions from offering proceeds (in dollars per share)	(0.56)	(0.54)	(0.51)
Offering costs and deferred sales commissions		0	0
Other (in dollars per share)	0.10	0.02	0.04
Net decrease in members' equity attributed to common shares (in dollars per share)	(0.46)	(0.55)	(0.57)
Net Asset Value at end of period (in dollars per share)	$ 8.58	$ 8.70	$ 8.44
Common shares outstanding at end of period (in shares)	783,593	55,264	18,109
Ratio/supplemental data for common shares (annualized)
Total return attributed to common shares based on net asset value (percentage)	5.18%	10.12%	5.66%
Ratio of net investment income to average net assets (percentage)	0.23%	1.90%	2.00%
Ratio of operating expense to average net assets (percentage)	3.34%	5.06%	3.99%
Ratio of operating expenses to average net assets after performance fee waiver (percentage)		4.90%
Portfolio turnover rate (percentage)	0.98%	12.35%	14.04%
Class P-A shares | Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 6,721,670	$ 480,799	$ 152,879
Class P-I Shares
Earnings Per Share [Roll Forward]
Net Asset Value at beginning of period (in dollars per share)	$ 9.02	$ 8.73	$ 8.62
Net investment income (in dollars per share)	0.02	0.16	0.17
Net realized and unrealized gain on investments and swap contracts (in dollars per share)	0.46	0.99	0.68
Change in translation of assets and liabilities denominated in foreign currencies (in dollars per share)	0	0	0
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (in dollars per share)	(0.14)	(0.34)	(0.24)
Distributions from net investment income (in dollars per share)	0	(0.03)	(0.10)
Distributions from offering proceeds (in dollars per share)	(0.58)	(0.55)	(0.48)
Offering costs and deferred sales commissions		0	0
Other (in dollars per share)	0.02	0.06	0.08
Net decrease in members' equity attributed to common shares (in dollars per share)	(0.56)	(0.52)	(0.50)
Net Asset Value at end of period (in dollars per share)	$ 8.80	$ 9.02	$ 8.73
Common shares outstanding at end of period (in shares)	92,069,013	36,710,292	21,249,352
Ratio/supplemental data for common shares (annualized)
Total return attributed to common shares based on net asset value (percentage)	4.13%	10.23%	8.15%
Ratio of net investment income to average net assets (percentage)	0.24%	1.84%	1.95%
Ratio of operating expense to average net assets (percentage)	3.45%	4.91%	3.90%
Ratio of operating expenses to average net assets after performance fee waiver (percentage)		4.75%
Portfolio turnover rate (percentage)	0.98%	12.35%	14.04%
Class P-I Shares | Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 810,046,418	$ 331,100,495	$ 185,463,453
Class P-D shares
Earnings Per Share [Roll Forward]
Net Asset Value at beginning of period (in dollars per share)	$ 8.96
Net investment income (in dollars per share)	0.02
Net realized and unrealized gain on investments and swap contracts (in dollars per share)	0.46
Change in translation of assets and liabilities denominated in foreign currencies (in dollars per share)	0
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (in dollars per share)	(0.14)
Distributions from net investment income (in dollars per share)	0
Distributions from offering proceeds (in dollars per share)	(0.53)
Other (in dollars per share)	0.03
Net decrease in members' equity attributed to common shares (in dollars per share)	(0.50)
Net Asset Value at end of period (in dollars per share)	$ 8.80	$ 8.96
Common shares outstanding at end of period (in shares)	198,548	0
Ratio/supplemental data for common shares (annualized)
Total return attributed to common shares based on net asset value (percentage)	3.81%
Ratio of net investment income to average net assets (percentage)	0.22%
Ratio of operating expense to average net assets (percentage)	3.28%
Portfolio turnover rate (percentage)	0.98%
Class P-D shares | Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 1,747,603
Class P-S shares
Earnings Per Share [Roll Forward]
Net Asset Value at beginning of period (in dollars per share)	$ 8.84
Net investment income (in dollars per share)	0.02
Net realized and unrealized gain on investments and swap contracts (in dollars per share)	0.46
Change in translation of assets and liabilities denominated in foreign currencies (in dollars per share)	0
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (in dollars per share)	(0.14)
Distributions from net investment income (in dollars per share)	0
Distributions from offering proceeds (in dollars per share)	(0.53)
Other (in dollars per share)	0.09
Net decrease in members' equity attributed to common shares (in dollars per share)	(0.44)
Net Asset Value at end of period (in dollars per share)	$ 8.74	$ 8.84
Common shares outstanding at end of period (in shares)	46,324,757	0
Ratio/supplemental data for common shares (annualized)
Total return attributed to common shares based on net asset value (percentage)	4.98%
Ratio of net investment income to average net assets (percentage)	0.24%
Ratio of operating expense to average net assets (percentage)	3.53%
Portfolio turnover rate (percentage)	0.98%
Class P-S shares | Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 404,803,246
Class P-T shares
Earnings Per Share [Roll Forward]
Net Asset Value at beginning of period (in dollars per share)	$ 8.57
Net investment income (in dollars per share)	0.02
Net realized and unrealized gain on investments and swap contracts (in dollars per share)	0.46
Change in translation of assets and liabilities denominated in foreign currencies (in dollars per share)	0
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts (in dollars per share)	(0.14)
Distributions from net investment income (in dollars per share)	0
Distributions from offering proceeds (in dollars per share)	(0.53)
Other (in dollars per share)	0.14
Net decrease in members' equity attributed to common shares (in dollars per share)	(0.39)
Net Asset Value at end of period (in dollars per share)	$ 8.52	$ 8.57
Common shares outstanding at end of period (in shares)	239,594	0
Ratio/supplemental data for common shares (annualized)
Total return attributed to common shares based on net asset value (percentage)	5.48%
Ratio of net investment income to average net assets (percentage)	0.24%
Ratio of operating expense to average net assets (percentage)	3.48%
Portfolio turnover rate (percentage)	0.98%
Class P-T shares | Shares
Earnings Per Share [Roll Forward]
Common members’ equity at end of period	$ 2,040,615

Financial Highlights - Narrativ

Financial Highlights - Narrative (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	126,458,860	54,057,620	43,788,187
Weighted average common shares outstanding, diluted (in shares)	126,458,860	54,057,620	43,788,187
Class A Shares
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	16,741,429	17,188,603	17,270,555
Weighted average common shares outstanding, diluted (in shares)	16,741,429	17,188,603	17,270,555
Class C Shares
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	2,751,320	2,740,846	2,645,713
Weighted average common shares outstanding, diluted (in shares)	2,751,320	2,740,846	2,645,713
Class I Shares
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	6,552,391	6,672,886	6,642,314
Weighted average common shares outstanding, diluted (in shares)	6,552,391	6,672,886	6,642,314
Class P-A shares
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	479,717	19,632	17,841
Weighted average common shares outstanding, diluted (in shares)	479,717	19,632	17,841
Class P-I Shares
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	67,370,914	27,435,653	17,211,763
Weighted average common shares outstanding, diluted (in shares)	67,370,914	27,435,653	17,211,763
Class P-D shares
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	129,799
Weighted average common shares outstanding, diluted (in shares)	129,799
Class P-S shares
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	32,304,342
Weighted average common shares outstanding, diluted (in shares)	32,304,342
Class P-T shares
Financial Highlights [Line Items]
Weighted average common shares outstanding, basic (in shares)	128,948
Weighted average common shares outstanding, diluted (in shares)	128,948

Revisions to Prior Period Fin_3

Revisions to Prior Period Financial Statements - Schedule of the Effect of Revisions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts	$ (17,888,961)	$ (18,529,344)	$ (10,461,973)
Net increase in net assets resulting from operations			32,033,020
Net increase in net assets attributed to common members			$ 26,762,350
Net increase in net assets attributed to common members (in dollars per share)	$ 0.34	$ 0.81	$ 0.61
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts			$ (7,926,882)
Net increase in net assets resulting from operations			34,568,111
Net increase in net assets attributed to common members			$ 29,297,441
Net increase in net assets attributed to common members (in dollars per share)			$ 0.67
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
(Provision for) income taxes on realized and unrealized gain (loss) on investments, foreign currency translation and swap contracts			$ (2,535,091)
Net increase in net assets resulting from operations			(2,535,091)
Net increase in net assets attributed to common members			$ (2,535,091)
Net increase in net assets attributed to common members (in dollars per share)			$ (0.06)