Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. A PSH system stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher…

Xcel Energy Inc. is a U.S. regulated electric utility and natural gas delivery company based in Minneapolis, Minnesota, serving approximately 3.9 million electricity customers and 2.2 million natural gas customers across parts of eight states as of mid-2025.

The American Clean Energy and Security Act of 2009 (ACES) was an energy bill in the 111th United States Congress (H.R. 2454) that would have established a variant of an emissions trading plan similar to the European Union Emission Trading Scheme. The bill was approved by the House of Representatives on June 26, 2009,…

New energy vehicles have gradually become more popular in South Africa, with sales increasing significantly in recent years. The country has a thriving automotive industry, and its public charging infrastructure continues to expand, including fast chargers and those dedicated to electric trucks.

Eversource Energy is a publicly traded, Fortune 500 energy company headquartered in Springfield, Massachusetts with additional corporate offices in Hartford, Connecticut, and Boston, Massachusetts, with several regulated subsidiaries offering retail electricity, natural gas service and water service to approximately 4…

Engie Energy International, formerly International Power, is a multinational electricity generation company headquartered in Newcastle upon Tyne, and a wholly owned subsidiary of the French company Engie (formerly GDF Suez). The company was formed as International Power in 2000 by the demerger of National Power.

Energy switching services are companies that have come to exist since the EU began deregulating the gas and electricity markets, to open them to competition, in 1996. Progress has been uneven across member countries, but in the UK there is now open competition among suppliers.

The Long Depression was a worldwide price and economic recession, beginning in 1873 and lasting until either March 1879, or the year 1899, depending on the metrics used. It was most severe in Europe and North America, which had been experiencing strong economic growth fueled by the Second Industrial Revolution.

NV Energy is a investor-owned public utility which generates, transmits and distributes electric service in northern and southern Nevada, including the Las Vegas Valley, and provides natural gas service in the Reno – Sparks metropolitan area of northern Nevada. Based in Las Vegas, Nevada, it serves about 1.

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…