Soluna Holdings, Inc. through its subsidiaries engages in the design, manufacture, and sale of test and measurement instruments and systems that use an array of technologies to solve complex, real world applications in numerous industries including manufacturing, electronics, semiconductor, solar, commercial and military aviation, automotive, and data storage. It also develops cryptocurrency mining facilities powered by renewable energy that integrate with the blockchain network. The firm operates through the following segments: Test and Management Instrumentation and Cryptocurrency. The Test and Measurement Instrumentation segment designs, manufactures, markets, and services computer-based balancing systems for aircraft engines, high performance test and measurement instruments and systems, and wafer characterization tools for the semiconductor and solar industries. The Cryptocurrency segment is focused on cryptocurrency and the blockchain ecosystem. The company was founded in 1961 and is headquartered in Albany, NY.