A Renewable Portfolio Standard (RPS) is a regulation that requires the increased production of energy from renewable energy sources, such as wind, solar, biomass, and geothermal, which have been adopted in 38 of 50 U.S. states and the District of Columbia. The United States federal RPS is called the Renewable…

Carbon emission trading (also called carbon market, emission trading scheme (ETS) or cap and trade) is a type of emissions trading scheme designed for carbon dioxide (CO2) and other greenhouse gases (GHGs). A form of carbon pricing, its purpose is to limit climate change by creating a market with limited allowances…

Since about 2001 the term nuclear renaissance has been used to refer to a possible nuclear power industry revival, driven by rising fossil fuel prices and new concerns about meeting greenhouse gas emission limits. The term emerged in a context brought about by a worldwide slowdown in the rollout of new nuclear…

Altenergy Power System better known as APsystems (formerly APS) is a global technology company that operates in the renewable energy space. APsystems is a provider of multi-platform module-level power electronics (MLPE) solutions for the solar photovoltaic (PV) industry.

This is a list of notable photovoltaics (PV) companies. Grid-connected solar photovoltaics (PV) is the fastest growing energy technology in the world, growing from a cumulative installed capacity of 7.7 GW in 2007, to 320 GW in 2016.

Husk Power, founded in 2008, is a company based in Fort Collins, Colorado, US, that provides clean energy to unserved and underserved (off-grid or weak grid) communities in sub-Saharan Africa and South Asia. It has three customers: 1) communities that access power through solar mini-grids/micro-grids, 2) businesses…

Founded in 1981 Isofoton was a Spanish leading manufacturer of photovoltaic cells and modules that had its HQ in Málaga and a distribution network present in over 60 countries. It started as a spin-off of the pioneering research programme of the Institute of Solar Energy of the Technical University of Madrid (IES-UPM)…

GoodLeap, formerly Loanpal, is a U.S.-based financing company headquartered in Roseville, CA that provides financing options for residential solar energy and other sustainable home improvements. It has facilitated over $30 billion in loans to more than 1 million homeowners across 50 states as of 2025.

Grupo Opaia SA is a holding company operating under Angolan law based in Luanda, Angola, running projects in civil construction services, solar energy technology, drinking water systems, hotel service and tourism, agriculture, finance and more. It was founded by the Angolan Agostinho Kapaia, from Huambo, in 2002.

The Limitation of the Vend was a historic price fixing cartel of coal mine owners of north east England. Its principal customers were ships' captains who purchased cargoes of coal and aimed to resell them in other parts of England; but above all in London which, by becoming the planet's first large mineral-fuelled…