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Related Party Transactions (Details Narrative) - USD ($) |  |  | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 29, 2021 | Dec. 18, 2013 | Sep. 30, 2025 | Dec. 31, 2024 | Oct. 08, 2025 | Oct. 10, 2023 | May 26, 2023
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Stock based awards |  |  | $ 110,000 | $ 178,000 |  |  |
Other assets |  |  | 1,090,000 | 2,724,000 |  |  |
Harmattan Energy Limited [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Equity investment |  |  | $ 0 | 0 |  |  |
Chief Executive Officer [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Description of director owns |  |  | (i) 90% of the equity of Soluna Technologies Investment I, LLC, which owns 57.9% of HEL and (ii) 100% of the equity of MJT Park Investors, Inc., which owns 3.1% of HEL, in each case, on a fully diluted basis. Mr. Toporek does not own directly, or indirectly, any equity interest in Tera Joule, LLC, which owns 9.2% of HEL; however, as a result of his 100% ownership of Brookstone IAC, Inc., which is the manager of Tera Joule, LLC, he has dispositive power over the equity interests that Tera Joule owns in HEL. |  |  |  |
Interest expense |  |  | $ 0 | 0 |  |  |
Matthew E. Lipman [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Description of director owns |  |  | Tera Joule, LLC, which owns 9.2% of HEL; however, as a result of his position as a director and officer of Brookstone IAC, Inc., which is the manager of Tera Joule, LLC, he has dispositive power over the equity interests that Tera Joule owns in HEL. As a result, the approximate dollar value of the amount of Mr. Toporek’s and Mr. Lipman’s interest in the Company’s transactions with HEL for the year ended December 31, 2024 was $0 and $0, respectively. |  |  |  |
John Belizaire and John Bottomley [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Description of director owns |  |  | In addition, Mr. Belizaire is the beneficial owner of 1,317,567 shares of common stock of HEL and 102,380 Class Seed Preferred shares, which are convertible into 86,763 shares of common stock of HEL. These interests give Mr. Belizaire an ownership of 10.54% in HEL. Mr. Belizaire also owns an interest in HEL indirectly through his 5.0139% interest in Tera Joule, LLC’s 965,945 Class Seed Preferred shares, which are convertible into 818,596 shares of common stock of HEL. Mr. Bottomley is the beneficial owner of 96,189, or approximately 0.72%, of the outstanding shares of common stock of HEL. |  |  |  |
Shares converted |  |  | 1,317,567 |  |  |  |
John Belizaire and John Bottomley [Member] | Class Seed Preferred Share [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Shares converted |  |  | 102,380 |  |  |  |
Merger Agreement [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Issuance of granted shares |  |  |  |  |  |  | 59,400
Notes Receivable [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Notes receviable |  |  | $ 13,000 | 82,000 |  |  |
Other assets |  |  | 97,000 | 96,000 |  |  |
MEOH Power, Inc. [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Company paid |  | $ 380,000 |  |  |  |  |
Share price |  | $ 0.07 |  |  |  |  |
Promissory note available to convert |  |  | $ 399,000 | $ 385,000 |  |  |
Soluna Computing Inc [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Payment of related party | $ 725,000 |  |  |  |  |  |
SCI US Holdings LLC [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Number of shares issued |  |  |  |  |  | 39,600 | 19,800
Issuance of granted shares |  |  |  |  |  |  | 59,400
SCI US Holdings LLC [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Number of shares issued |  |  |  |  | 17,820 |  |
Issuance of granted shares |  |  |  |  | 41,580 |  |
Harmattan Energy Ltd [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Shares converted |  |  | 86,763 |  |  |  |
Investment percentage |  |  | 1.79% | 1.79% |  |  |
Harmattan Energy Ltd [Member] | Common Stock [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Shares converted |  |  | 818,596 |  |  |  |
Tera Joule, LLC [Memebr] | Class Seed Preferred Share [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Shares converted |  |  | 965,945 |  |  |  |

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