Soluna Holdings, Inc. together with its subsidiaries, engages in the mining of cryptocurrency through data centres. It operates through two segments, Cryptocurrency Mining and Data Centre Hosting. The company also operates in the blockchain business. In addition, the company develops and builds modular data centres that use for cryptocurrency mining. Further, it provides data centre hosting services, including electrical power and network connectivity to cryptocurrency mining customers. The company provide up to 187 MW of sustainable energy, executed in two phases, which allocated to support computing tasks in AI and Bitcoin mining. Soluna Holdings, Inc. was formerly known as Mechanical Technology Inc and as changed to Soluna Holdings, Inc. Soluna Holdings, Inc. was incorporated in 1961 and is headquartered in Albany, New York.