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.

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.

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.

Aggreko is a global supplier of mobile and modular power, temperature control equipment and energy services, headquartered in Glasgow, United Kingdom. The business was founded in 1962 and previously listed on the London Stock Exchange from 1997 to 2021.

Vitol (pronounced Vee-Tol) is a Swiss-based Dutch multinational energy and commodity trading company that was founded in Rotterdam in 1966 by Henk Viëtor. Vitol has over 40 offices worldwide, with its largest operations in Geneva, Houston, London, and Singapore.

A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair of redox reactions. Fuel cells are different from most batteries in requiring a continuous source of fuel and oxygen (usually from air) to sustain…

Axpo Holding AG is a Swiss energy company headquartered in Baden, in the Canton of Aargau, and the parent company of the Axpo Group. Established in 2001 through the reorganisation of the former Nordostschweizerische Kraftwerke AG (NOK), it is wholly owned by the cantons of northeastern Switzerland and their cantonal…

A solar cell, also known as a photovoltaic cell (PV cell), is an electronic device that converts the energy of light directly into electricity by using the photovoltaic effect. It is a type of photoelectric cell, a device whose electrical characteristics (such as current, voltage, or resistance) vary when it is…

Leadership in Energy and Environmental Design (LEED) is a green building certification program used worldwide. Developed by the non-profit U.S. Green Building Council (USGBC), it includes a set of rating systems for the design, construction, operation, and maintenance of green buildings, homes, and neighborhoods,…

Although Alberta has a presence in many industries such as agriculture, forestry, education, tourism, finance, and manufacturing, the politics and culture of the province have been closely tied to the production of fossil energy since the 1940s. Alberta—with an estimated 1.4 billion cubic metres of unconventional oil…