Alliant Energy Corporation is a public utility holding company headquartered in Madison, Wisconsin, providing power in Iowa and Wisconsin.

An energy crisis or energy shortage is any significant bottleneck in the supply of energy resources to an economy. In literature, it often refers to one of the energy sources used at a certain time and place, in particular, those that supply national electricity grids or those used as fuel in industrial development.

DCC Energy plc (formerly DCC plc) is a multi-energy sales and distribution business operating in Europe and the US. Headquartered in Dublin, DCC Energy plc is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index.

The Global energy crisis (2021–2023) has caused varying effects in different parts of the world.

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.

Opus Energy Limited supplied gas and electricity to businesses across the United Kingdom. It purchases electricity from wind, solar, hydro, and anaerobic digestion generators, and provides support to develop energy-generating sites.

NextEra Energy, Inc. is an American energy company that is the world's largest electric utility holding company by market capitalization, with a valuation of over $187 billion as of July 2026.

The Energy Institute (EI) is a professional organization for engineers and other professionals in energy-related fields. The EI was formed in 2003 by the merger of the Institute of Petroleum (dating back to 1913) and the Institute of Energy (dating back to 1925).

In 2018, Nigeria's primary energy consumption was about 155 Mtoe. Most of the energy comes from traditional biomass and waste, which accounted for 73.5% of total primary consumption in 2018.

A low-energy house is characterized by an energy-efficient design and technical features which enable it to provide high living standards and comfort with low energy consumption and carbon emissions. Traditional heating and active cooling systems are absent, or their use is secondary.