Repsol S.A. (Spanish pronunciation: [reβˈsol]) is a Spanish multinational energy and petrochemical company based in Madrid. It is engaged in worldwide upstream and downstream activities.

Scottish Power Limited, trading as ScottishPower, is a British vertically integrated energy company headquartered in Glasgow, Scotland. It is a subsidiary of Spanish utility firm Iberdrola.

RenewableUK, formerly known as the British Wind Energy Association (BWEA), is the trade association for wind power, wave power and tidal power industries in the United Kingdom.

Tesla, Inc. is an electric vehicle manufacturer and clean energy company founded in San Carlos, California in 2003 by American entrepreneurs Martin Eberhard and Marc Tarpenning.

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China is the largest market in the world for both photovoltaics (PV) and solar thermal energy. Its PV capacity crossed 1,000 gigawatts (one terawatt, 1 TW) in May 2025.

Wind power is the use of wind energy to generate useful work. Historically, wind power was used by sails, windmills and windpumps, but today it is mostly used to generate electricity.

Utility Warehouse is a multi-service provider based in London, England that uses multi-level marketing to obtain customers through independent distributors. It is a brand name of its parent company, Telecom Plus.

Builders Warehouse (commonly referred to as Builders in South Africa), is a South African construction equipment and home improvement retail chain. Founded in 2003, it is owned by South African retail holding company Massmart.

Water heating is a heat transfer process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include cooking, cleaning, bathing, and space heating.