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Enel Green Power
Enel Green Power is the renewable power generation business of Italy's Enel Group. Founded in 2008, it operates more than 1,400 wind, solar, hydroelectric, and geothermal plants in 19 countries.
Enel Green Power North America
Enel Green Power North America (EGPNA) is a renewable energy subsidiary of the Italian utility Enel, operating wind, solar, geothermal, and storage plants across the United States and Canada.
ENEOS Group
ENEOS Group (ENEOSグループ) is a Japanese energy and materials corporate group built from the mergers of Nippon Oil, Nippon Mining, and TonenGeneral, renamed from JXTG Holdings in 2020.
ENEOS Oita Refinery
The ENEOS Oita Refinery (大分製油所) is an oil refinery in Oita City, Japan, operated by ENEOS and the only refinery in Kyushu, with a capacity of 136,000 barrels per day.
Energa
Energa is a Polish state-controlled energy group headquartered in Gdańsk that generates, distributes, and sells electricity, serving about 3.4 million customers; Orlen holds 80.01% since 2020.
Energean
Energean is a London-based oil and gas exploration and production company, founded in 2007, whose Karish fields offshore Israel supply roughly 40% of the country's gas demand.
Energetický a průmyslový holding
Energetický a průmyslový holding (EPH) is a Prague-based Czech energy group founded in 2009 and controlled by Daniel Křetínský, with power, heat, and gas operations across Central and Western Europe.
Energia (Энергия) (rocket)
Energia (Энергия) was a Soviet super heavy-lift launch vehicle, designated 11K25, that flew twice from Baikonur in 1987 and 1988 as the launcher for the Buran shuttle.
Energía Argentina
Energía Argentina (ENARSA) is an Argentine state-owned energy company created by law in 2004, covering hydrocarbons, gas transport, and electricity, now undergoing total privatization ordered in 2025.
Energiateollisuus
Energiateollisuus (Finnish Energy) is a Finnish trade and employers' association for the energy sector, formed in 2004, that negotiates collective agreements and advocates member companies.
Energiewende
The Energiewende, German for "energy transition," is Germany's policy of shifting from nuclear and fossil fuels to renewables, targeting 80 percent renewable electricity by 2030.
Energinet
Energinet is the Danish transmission system operator, an independent public enterprise created in 2005 that owns and runs Denmark's electricity and gas grids and their interconnections.
Energistyrelsen
Energistyrelsen, in English the Danish Energy Agency (DEA), is the Danish government agency responsible for energy production, supply, and consumption and carbon emission reduction, established in 1976 under the Ministry of Climate, Energy and Utilities.
Energizer
Energizer, also known as Energizer Holdings, is an American consumer products company selling household, rechargeable, and hearing aid batteries worldwide under the Energizer, Eveready, Rayovac, and Varta brands.
Energoatom
Energoatom, formally the National Nuclear Energy Generating Company, is Ukraine's state-owned nuclear power operator, running 15 reactors and nominally the Zaporizhzhia plant, occupied by Russia since March 2022.
Energy Act 2023
The Energy Act 2023 is a United Kingdom law covering energy production, security, and market regulation, receiving Royal Assent on 26 October 2023 as the largest energy legislation in UK history.
Energy Act of 2020
The Energy Act of 2020 is a US federal statute, signed December 27, 2020, that authorizes Department of Energy research and demonstration programs across energy efficiency, nuclear, renewables, and storage.
Energy adaptive clustering
Energy adaptive clustering is a family of clustering protocols for wireless sensor networks in which nodes use residual energy to rotate the cluster-head role and extend system lifetime.
Energy as a service
Energy as a service (EaaS) is a business model in which a provider bundles on-site generation, storage, and electricity supply, with customers paying for reliable, cheaper energy.
Energy attribute certificate
An energy attribute certificate (EAC) is a contractual instrument tracking attributes like source and emissions of a unit of energy generation, including renewable energy certificates and guarantees of origin.
Energy audit
An energy audit is a systematic analysis of energy use in a building or facility, producing a ranked report of efficiency measures with estimated savings and costs.
Energy burden
Energy burden is the share of a household's gross income spent on energy costs, the standard US benchmark for targeting programs like LIHEAP and weatherization.
Energy Community
The Energy Community is an international organization established by a treaty signed in Athens in 2005, extending the EU's internal energy market rules to nine neighboring countries.
Energy conservation
Energy conservation, also called energy saving, means reducing energy use through actions like turning off lights; in physics, it is the law that energy only changes form, never destroyed.
Energy Conservation Building Code
The Energy Conservation Building Code (ECBC) is India's national building energy code for commercial buildings, launched in May 2007 by the Ministry of Power through the Bureau of Energy Efficiency.
Energy conversion efficiency
Energy conversion efficiency is the ratio of useful energy output to energy input, usually a percentage, applying to power plants, solar cells, motors, and vehicles.
Energy crisis
An energy crisis, also called an energy shortage, is a widespread disruption in energy supply or a steep rise in its price, recurring since the 1970s oil shocks.
Energy detection
Energy detection is a signal-detection method used for spectrum sensing in cognitive radio, measuring received signal energy over an interval and comparing it with a threshold.
Energy development
Energy development, also called sources of energy, is the effort to produce and expand access to energy services, including electricity, clean cooking, and low-carbon sources.
Energy Development Oman
Energy Development Oman (EDO) is Oman's wholly state-owned energy holding company, established by royal decree in 2020, holding a 60 percent stake in Petroleum Development Oman and owning the green hydrogen body Hydrom.