Extraenergy is a United Kingdom oil and gas corporation headquartered in London, England and was formed on 28 September 2021 with the registration number #13646624.

Extra Energy's downstream operations manufacture and sell products such as fuels, lubricants, additives, and petrochemicals including distribution of natural oil and gas.

In 2018, Extra Energy produced an average of 791,000 barrels of net oil-equivalent per day in United Kingdom.

Extra Energy's alternative energy operations include geothermal solar, wind, biofuel, fuel cells, and hydrogen In 2021 it significally increased its use of biofuel from dairy farms, like biomethane. Core has claimed to be one of the world's largest producer of geothermal energy.The company's primary geothermal operations were located in Southeast Asia, but these assets were sold in 2017.

Extra Energy is regulated by FCA under the registration number #13646624.