0000064463 2024-04-18 2024-04-18 0000064463 SLNH:CommonStockParValue0.001PerShareMember 2024-04-18 2024-04-18 0000064463 SLNH:Sec9.0SeriesCumulativePerpetualPreferredStockParCalue0.001PerShareMember 2024-04-18 2024-04-18 iso4217:USD shares iso4217:USD shares false 0000064463 8-K 2024-04-18 SOLUNA HOLDINGS, INC. NV 001-40261 14-1462255 325 Washington Avenue Extension Albany NY 12205 (516) 216-9257 false false false false Common stock, par value $0.001 per share SLNH NASDAQ 9.0% Series A Cumulative Perpetual Preferred Stock, par calue $0.001 per share SLNHP NASDAQ false