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…

This page provides lists of best-selling books and book series to date and in any language. "Best-selling" refers to the estimated number of copies sold of each book, rather than the number of books printed or currently owned.

The Abu Dhabi National Oil Company (Arabic: شركة بترول أبو ظبي الوطنية), known by its acronym ADNOC, is the state-owned oil company of Abu Dhabi, United Arab Emirates. It is the world's 12th largest oil company by production.

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.

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…

California produces more renewable energy than any other state in the United States except Texas. In 2018, California ranked first in the nation as a producer of electricity from solar, geothermal, and biomass resources and fourth in the nation in conventional hydroelectric power generation.

Takealot (officially Takealot Group) is a South African e-commerce company founded in 2011, and owned by major mass media corporation, Naspers. Headquartered in Cape Town's Foreshore area, the company operates numerous divisions, including takealot.com, South Africa's largest online retailer.

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…

E.ON UK is a British energy company and one of the largest suppliers of energy in the UK, following its acquisition of Npower. It is a subsidiary of E.ON of Germany and one of the Big Six energy suppliers.