Capstone Green Energy Holdings, Inc. is a holding company. The Company manufacture and sell low-emission, oil-free microturbine-based energy technology. Its solutions are used in stationary distributed power generation and distribution network applications. Its microturbine systems are deployed in standalone power generation; combined heat and power cogeneration; and integrated combined heat and power configurations. The Company offers a range of scalable energy systems for commercial, industrial, and utility scale applications, with capacities from 65 kilowatts to multiple megawatts. It also provides ancillary products that enable the conversion of waste energy into usable forms. The Company manufacture and supply system controllers that support automated system operations, including electrical load management and protection against utility demand charges. The Company also delivers financial solutions through its Energy-as-a-Service (EaaS) platform.