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…

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.

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,…

The Barnes & Noble Nook (styled nook or NOOK) is a brand of e-readers developed by American book retailer Barnes & Noble, based on the Android platform. The original device was announced in the U.S. in October 2009, and was released the next month.

Geothermal energy in the United States was first used for electric power production in 1960. The Geysers in Sonoma and Lake counties, California was developed into what is now the largest geothermal steam electrical plant in the world, at 1,517 megawatts.

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…

Jacob Arabo (born Yakov Arabov; June 3, 1965) is an American jeweler and watchmaker who founded Jacob & Company in 1986 and grew it to become an international luxury brand. He began strictly as a jeweler with designs that appealed to celebrities who became regular customers.

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.