Capricorn Energy plc (formerly Cairn Energy plc) is a British oil and gas exploration and development company based in Edinburgh, Scotland. The company is listed on the London Stock Exchange.

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

Utility Warehouse is a multi-service provider based in London, England that uses multi-level marketing to obtain customers through independent distributors. It is a brand name of its parent company, Telecom Plus.

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.

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.

Nebraska Furniture Mart (branded as NFM since 2019) is a home furnishing store in North America that sells furniture, flooring, appliances, and electronics. It is the largest of its kind in North America.

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).

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.