Soluna Holdings, Inc. designs, develops, and operates digital infrastructure that transforms surplus renewable energy into global computing resources. The Company operates through four segments, which include Cryptocurrency Mining, Data Center Hosting, Wind Energy Generation, and High-Performance Computing. The Cryptocurrency Mining segment offers bitcoin mining activities by Dorothy and Project Kati. The Data Center Hosting segment offers hosting services provided to third-party Bitcoin mining customers at the data centers. The Wind Energy Generation segment sells power generated from owned wind turbines and sells renewable energy credits. The High-Performance Computing Services segment offers sales or lease of HPC assets such as Project Ada, which leases graphics processing units (GPUs), or from HPC/AI data centers to be leased to third-party HPC/AI customers. It utilizes two distinct data centers that are designed to serve different computing markets.