SUNation Energy Inc. engages in the design, installation, and maintenance of photovoltaic solar energy systems and battery storage systems in the United States. The company's brand portfolio includes SUNation, SUNation Energy, Hawaii Energy Connection, E-Gear, Sungevity, and Horizon Solar Power. It also develops and offers energy control devices for solar systems that are paired with batteries. In addition, the company provides energy and grid services. It serves residential homeowners, commercial owners, municipal customers, energy services companies, and utilities. SUNation Energy Inc. was founded in 1969 and is based in Ronkonkoma, New York.