Variable renewable energy (VRE) or intermittent renewable energy sources (IRES) are renewable energy sources that are not dispatchable (adjustable on demand) due to their fluctuating nature, such as wind power and solar power, as opposed to controllable renewable energy sources, such as dammed hydroelectricity or…

California produces more renewable energy than any other state in the United States except Texas. In 2018, California ranked first in the nation as a producer of electricity from solar, geothermal, and biomass resources and fourth in the nation in conventional hydroelectric power generation.

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.

Canada has access to all main sources of energy including oil and gas, coal, hydropower, biomass, solar, geothermal, wind, marine and nuclear. It is the world's second largest producer of uranium, third largest producer of hydro-electricity, fifth largest natural gas producer, and the fifth largest producer of crude…

Berkshire Hathaway Energy (BHE) is an American energy holding company and a wholly owned subsidiary of Berkshire Hathaway. The company is headquartered in Des Moines, Iowa.

While being a major oil producing country, the United Arab Emirates (UAE) has taken steps to introduce solar power on a large scale. However, solar power still accounts for a small share of energy production in the country.

EDF Energy is a British integrated energy company, wholly owned by the French state-owned EDF (Électricité de France), with operations spanning electricity generation and the sale of natural gas and electricity to homes and businesses throughout the United Kingdom. It employs 11,717 people, and handles 5.22 million…

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…

Ophir Energy plc was an oil and gas exploration and production company based in London. It owned both operating and non-operating assets in Africa, Asia, and Mexico.

Bristol Energy was a municipally owned energy supply company, founded in September 2015 by Bristol City Council. Its business accounts were sold to Yü Energy in August 2020, and in the following month its residential accounts were sold to Together Energy.