Rezil Inc., together with its subsidiaries, supplies electricity to condominiums in Japan. It operates through Distributed Energy, Green Energy, and Energy DX segments. The company is involved in the installation of distributed power sources, including power receiving and transforming facilities solar power generation, storage batteries, and EV charging equipment in apartments and buildings; maintenance, renovation, inspection, and repair of installed electrical equipment; retail and agency sale of gas; cleaning and internet line services; and provision of electricity retail services centered on renewable energy. It also provides outsourcing services to businesses in the energy industry comprising business process as a service (BPaaS), a service that enables software to be integrated into business processes in SaaS; digital transformation support; back-office services, such as billing, collection agency work, inquiries, and call center work; and consulting services. In addition, the company engages in electrical safety and construction; and electric power wholesaling and retailing businesses. Rezil Inc. was founded in 1993 and is headquartered in Chiyoda, Japan.