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.

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.

Fusion power is a potential method of electric power generation from heat released by nuclear fusion reactions. In fusion, two light atomic nuclei combine to form a heavier nucleus and release energy.

A.G. Barr p.l.c., commonly known as Barr's, is a soft drink and energy drink manufacturer based in Cumbernauld, Scotland. It is widely known for manufacturing the drink Irn-Bru.

Mulalo Doyoyo (13 August 1970 – 11 March 2024) was a South African engineer, inventor, and professor. Doyoyo was a researcher in applied mechanics, ultralight materials, green building, renewable energy, and other fields of engineering.

BayWa AG (until 1972: Bayerische Warenvermittlung landwirtschaftlicher Genossenschaften AG) is an internationally active group headquartered in Munich, Germany. Originally founded to support domestic agriculture, the company expanded its activities to the construction and energy sectors.

There are currently many research groups active in the field of photovoltaics in universities and research institutions around the world. This research can be categorized into three areas: making current technology solar cells cheaper and/or more efficient to effectively compete with other energy sources; developing…

SSE plc (formerly Scottish and Southern Energy plc) is a British multinational electricity company headquartered in Perth, Scotland. It is listed on the London Stock Exchange, and is a constituent of the FTSE 100 Index.

The Carbon Trust is a consultancy established in March 2001, with offices across the world. Its aim is to accelerate the pace of private and public sectors decarbonisation and increase energy efficiency in organisations worldwide.