Nature of Operations (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) site	Dec. 31, 2024 USD ($)	Sep. 12, 2025 USD ($)	Jul. 22, 2025 MW	Jul. 22, 2024 MW	Jun. 30, 2024 MW	Dec. 31, 2023	Jun. 02, 2023	Jan. 01, 2023	Dec. 31, 2021 MW
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of operating sites | site	4
Net (loss) income	$ (56,991)	$ (58,300)
Net cash for operating activities	(9,149)	(5,069)
Total debt outstanding	26,757	21,505
Termination liability	19,300	20,000
Net proceeds from financing activities	119,392	18,318
Cash on hand	76,423	$ 7,843
Line of credit facility, maximum borrowing capacity	100,000
2026 SEPA Shares
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Authorized share repurchase	18,800
Kentucky
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Operating site power generation (in MW) | MW						50				25
Texas
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Operating site power generation (in MW) | MW				35	48					100
Generate Credit Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total debt outstanding	17,000
Tranche A-1 | Generate Credit Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total debt outstanding	$ 5,500
Tranche A-3 | Generate Credit Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total debt outstanding			$ 11,500
DVSL ComputeCo, LLC
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equity interest ownership percentage	15.00%
Debt instrument percentage							67.80%		14.60%
Soluna DV Compute Co LLC
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equity interest ownership percentage	51.00%							51.00%
Soluna Digital Inc
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equity interest ownership percentage	0.00%
Soluna Digital Inc | Investor Class B Membership Interests
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equity interest ownership percentage	0.00%
Soluna Digital Inc | Class A Membership Interests
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equity interest ownership percentage	100.00%
KKSL JVCo | Investor Class B Membership Interests
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Debt instrument percentage	20.00%
KKSL JVCo | Soluna Digital Inc | Investor Class B Membership Interests
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Debt instrument percentage	100.00%
Soluna Holdings, Inc
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Equity interest ownership percentage	100.00%