Soluna Holdings, Inc. builds, owns, and operates modular data centers that eliminate wasted energy and deliver revenue to renewable energy producers worldwide. It offers electronic gauging instruments for position, displacement, and vibration applications in the industrial manufacturing markets, as well as the research, design, and process development market. The company also provides engine vibration analysis systems for military and commercial aircraft; portable signal generator that delivers an electronic signal simulating other pieces of equipment or sensors for testing and calibrating electronic equipment; and products for the detection of defects in semiconductor and solar wafers. In addition, it engages in the cryptocurrency mining and the blockchain ecosystem business. The company serves the manufacturing, electronics, semiconductor, solar, aviation, automotive, and data storage industries. Soluna Holdings, Inc. was incorporated in 1961 and is headquartered in Albany, New York.