Ecotricity is a British energy company based in Stroud, Gloucestershire, specialising in selling green energy to consumers that it primarily generates from its 87.2-megawatt wind power portfolio. It is built on the principle of heavily reinvesting its profit in building more of its own green energy generation.

Green Energy (UK) Ltd, operating as 100Green, is a British independent-energy company based in Ware, Hertfordshire. It was established in 2001 by CEO Douglas Stewart.

Mark Group Limited is a UK based energy advice and installation company, who focus upon energy efficiency. Mark Group went into administration on 7 October 2015.

Bloom Energy Corporation (formerly, Ion America Corp.) is an American public company that designs and manufactures solid oxide fuel cells (SOFCs) which independently produce electricity onsite for power generation in data centers, manufacturing, and other commercial sectors. It was founded in 2001 and headquartered in…

Beijing WeLion New Energy Technology Co., Ltd., known simply as WeLion New Energy or WeLion (Mandarin: 卫蓝; pinyin: Wèilán), is a Chinese battery manufacturer specializing in semi-solid and solid state batteries for use in electric vehicles and energy storage systems. The company is headquartered in the Beijing's…

Climate change mitigation, also called decarbonisation, is an action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include conserving energy and replacing fossil fuels with clean energy sources.

Domestic housing in the United Kingdom presents a possible opportunity for achieving the 20% overall cut in UK greenhouse gas emissions targeted by the Government for 2010. However, the process of achieving that drop is proving problematic given the very wide range of age and condition of the UK housing stock.

Engie SA (stylised in all caps as ENGIE) is a French multinational electric utility company, headquartered in La Défense, Courbevoie. Its activities cover electricity generation and distribution, natural gas, nuclear power, renewable energy, district energy, and the petroleum industry.

The electricity sector in New Zealand uses almost entirely renewable energy, such as hydropower, geothermal power and increasingly wind energy. In the fourth quarter of 2025, the country generated 96.4% of its electricity from renewable sources.

Ashden is a London-based charity that works in the field of sustainable energy and development. Its work includes the annual Ashden Awards, advocacy and research in the field of sustainable energy, and mentoring and practical support for award winners.