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Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Schedule of long-term debt instruments The following table presents the detail of long-term debt, net as recorded in the unaudited condensed consolidated balance sheets:
Three Months Ended
March 31, 2024
Weighted Average
Effective Interest
Rates		As of March 31, 2024Year Ended
December 31, 2023
Weighted Average
Effective Interest
Rates		As of December 31, 2023
Long-termCurrentLong-termCurrent
(in thousands, except interest rates)
SEI
0.25% convertible senior notes
0.71 %$575,000 $— 0.71 %$575,000 $— 
2.625% convertible senior notes
3.04 %600,000 — 3.03 %600,000 — 
Debt discount, net(17,870)— (19,174)— 
Deferred financing costs, net(695)— (748)— 
Sunnova Energy Corporation
Notes payable
19.38 %— 577 7.07 %— 3,084 
5.875% senior notes
6.55 %400,000 — 6.53 %400,000 — 
11.75% senior notes
12.29 %400,000 — 12.02 %400,000 — 
Debt discount, net(12,722)— (13,288)— 
Deferred financing costs, net(11,356)— (12,119)— 
EZOP
Revolving credit facility9.47 %390,171 — 8.72 %511,000 — 
Debt discount, net(261)— (302)— 
HELII
Solar asset-backed notes5.64 %190,508 9,111 5.64 %194,933 9,065 
Debt discount, net(23)— (24)— 
Deferred financing costs, net(2,771)— (2,926)— 
RAYSI
Solar asset-backed notes5.58 %103,686 6,450 5.55 %105,096 6,349 
Debt discount, net(696)— (753)— 
Deferred financing costs, net(2,888)— (3,004)— 
HELIII
Solar loan-backed notes4.46 %84,477 9,873 4.43 %86,232 9,983 
Debt discount, net(1,180)— (1,250)— 
Deferred financing costs, net(1,133)— (1,200)— 
TEPH
Revolving credit facility9.80 %1,024,850 — 10.03 %1,036,600 — 
Debt discount, net(1,015)— (1,168)— 
SOLI
Solar asset-backed notes3.93 %332,368 13,454 3.91 %335,874 12,965 
Debt discount, net(71)— (74)— 
Deferred financing costs, net(5,511)— (5,769)— 
HELIV
Solar loan-backed notes4.16 %95,837 10,700 4.16 %97,458 10,854 
Debt discount, net(382)— (417)— 
Deferred financing costs, net(1,798)— (1,955)— 
AP8
Revolving credit facility9.18 %— 215,000 9.42 %— 215,000 
SOLII
Solar asset-backed notes1.41 %219,974 6,697 3.90 %221,955 7,195 
Debt discount, net(54)— (56)— 
Deferred financing costs, net(3,790)— (3,948)— 
HELV
Solar loan-backed notes2.51 %132,508 13,286 2.49 %134,473 13,496 
Debt discount, net(504)— (540)— 
Deferred financing costs, net(1,956)— (2,094)— 
SOLIII
Solar asset-backed notes2.84 %253,438 14,533 2.81 %257,545 15,762 
Debt discount, net(98)— (102)— 
Deferred financing costs, net(4,679)— (4,871)— 
HELVI
Solar loan-backed notes2.10 %157,539 13,313 2.10 %159,901 13,521 
Debt discount, net(30)— (32)— 
Deferred financing costs, net(2,204)— (2,345)— 
HELVII
Solar loan-backed notes2.54 %122,132 10,060 2.53 %123,494 10,221 
Debt discount, net(29)— (31)— 
Deferred financing costs, net(1,697)— (1,797)— 
HELVIII
Solar loan-backed notes3.64 %240,479 19,681 3.62 %243,020 19,995 
Debt discount, net(4,130)— (4,355)— 
Deferred financing costs, net(3,220)— (3,395)— 
SOLIV
Solar asset-backed notes5.95 %322,526 8,574 5.90 %325,612 8,464 
Debt discount, net(8,998)— (9,440)— 
Deferred financing costs, net(6,443)— (6,759)— 
HELIX
Solar loan-backed notes5.67 %195,236 13,592 5.64 %196,174 15,246 
Debt discount, net(2,886)— (3,027)— 
Deferred financing costs, net(2,667)— (2,798)— 
HELX
Solar loan-backed notes7.55 %202,073 14,644 7.38 %200,842 19,996 
Debt discount, net(15,988)— (17,015)— 
Deferred financing costs, net(2,855)— (3,064)— 
IS
Revolving credit facility9.22 %34,100 — 8.90 %31,300 — 
SOLV
Solar asset-backed notes6.82 %310,531 7,890 6.93 %312,844 7,775 
Debt discount, net(14,632)— (15,491)— 
Deferred financing costs, net(6,310)— (6,682)— 
HELXI
Solar loan-backed notes6.48 %245,454 29,504 6.29 %247,251 31,240 
Debt discount, net(11,557)— (12,007)— 
Deferred financing costs, net(4,891)— (5,195)— 
HELXII
Solar loan-backed notes6.98 %209,739 25,375 6.71 %210,263 26,661 
Debt discount, net(12,401)— (13,065)— 
Deferred financing costs, net(4,153)— (4,135)— 
AP9
Revolving credit facility
18.73 %16,035 — 19.30 %12,118 — 
Debt discount, net(494)— (572)— 
HESI
Solar loan-backed notes4.04 %211,331 26,988 10.94 %213,432 26,625 
Debt discount, net(7,337)— (7,616)— 
Deferred financing costs, net(6,740)— (7,058)— 
SOLVI
Solar asset-backed notes6.31 %221,811 4,188 — — 
Debt discount, net(12,194)— — — 
Deferred financing costs, net(5,091)— — — 
HELXIII
Solar loan-backed notes5.93 %202,235 20,006 — — 
Debt discount, net(7,412)— — — 
Deferred financing costs, net(4,490)— — — 
Total$7,273,736 $493,496 $7,030,756 $483,497 
Schedule of carrying values and estimated fair values of debt instruments
Fair Values of Long-Term Debt.    The fair values of our long-term debt and the corresponding carrying amounts are as
follows:

As of March 31, 2024As of December 31, 2023
Carrying
Value		Estimated
Fair Value		Carrying
Value		Estimated
Fair Value
(in thousands)
SEI 0.25% convertible senior notes
$575,000 $525,613 $575,000 $528,927 
SEI 2.625% convertible senior notes
600,000 573,142 600,000 582,463 
Sunnova Energy Corporation notes payable
577 577 3,084 3,084 
Sunnova Energy Corporation 5.875% senior notes
400,000 365,469 400,000 369,522 
Sunnova Energy Corporation 11.75% senior notes
400,000 405,000 400,000 411,996 
EZOP revolving credit facility390,171 390,171 511,000 511,000 
HELII solar asset-backed notes199,619 190,852 203,998 198,590 
RAYSI solar asset-backed notes110,136 99,097 111,445 102,480 
HELIII solar loan-backed notes94,350 84,768 96,215 87,982 
TEPH revolving credit facility1,024,850 1,024,850 1,036,600 1,036,600 
SOLI solar asset-backed notes345,822 302,703 348,839 310,928 
HELIV solar loan-backed notes106,537 94,302 108,312 96,603 
AP8 revolving credit facility215,000 215,000 215,000 215,000 
SOLII solar asset-backed notes226,671 187,047 229,150 192,589 
HELV solar loan-backed notes145,794 129,066 147,969 132,533 
SOLIII solar asset-backed notes267,971 225,794 273,307 235,318 
HELVI solar loan-backed notes170,852 149,053 173,422 153,836 
HELVII solar loan-backed notes132,192 117,336 133,715 120,413 
HELVIII solar loan-backed notes260,160 235,016 263,015 241,599 
SOLIV solar asset-backed notes331,100 315,978 334,076 325,816 
HELIX solar loan-backed notes208,828 196,646 211,420 203,375 
HELX solar loan-backed notes216,717 214,023 220,838 221,655 
IS revolving credit facility34,100 34,100 31,300 31,300 
SOLV solar asset-backed notes318,421 308,776 320,619 317,481 
HELXI solar loan-backed notes274,958 267,125 278,491 275,323 
HELXII solar loan-backed notes235,114 234,834 236,924 242,091 
AP9 revolving credit facility
16,035 16,035 12,118 12,118 
HESI solar loan-backed notes
238,319 241,742 240,057 249,318 
SOLVI solar asset-backed notes225,999 227,628 — — 
HELXIII solar loan-backed notes222,241 222,698 — — 
Total (1)$7,987,534 $7,594,441 $7,715,914 $7,409,940 

(1) Amounts exclude the net deferred financing costs (classified as debt) and net debt discounts of $220.3 million and $201.7 million as of March 31, 2024 and December 31, 2023, respectively.