Ian David Mays

Renewable Energy Systems Ltd. develops, designs, and constructs wind farms, renewable heat, and power installations. The firm offers solar farms, transmission lines, and energy storage services. It also provides demand side management, project development, measurement, engineering, construction, legal and commercial package, and asset management services. The company was founded in 1981 and is headquartered in Kings Langley, the United Kingdom.

Renewable Energy Systems Holdings Ltd. engages in the development, construction, and management of renewable energy projects and infrastructure. It also sells developed projects, and produces and sells of electricity from projects where ownership has been retained. The company was founded on September 26, 2003 and is headquartered in Kings Langley, the United kingdom.