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Envision AESC
Envision AESC is a Yokohama-based maker of lithium-ion battery cells for electric vehicles, founded by Nissan and NEC in 2007 and sold to Envision Group in 2019.
Envision Energy
Envision Energy (远景能源) is a Chinese green technology company headquartered in Shanghai, founded in 2007 by Zhang Lei and ranked second among global wind turbine suppliers in 2024.
Envision Group (远景科技)
Envision Group (远景科技) is a Chinese green-technology company founded by Zhang Lei in Jiangyin, spanning wind turbines, batteries, green hydrogen, and software through subsidiaries including Envision Energy and Envision AESC.
Enviva
Enviva is an American company headquartered in Bethesda, Maryland, and the world's largest industrial producer of wood pellets, a biomass fuel burned in power stations.
Enzymatic hydrolysis
Enzymatic hydrolysis is the enzyme-driven breakdown of cellulose in plant biomass into soluble sugars, under mild conditions, and serves as the central conversion step in biochemical cellulosic ethanol production.
Enzymatic transesterification
Enzymatic transesterification is the lipase-catalyzed conversion of oils and fats into biodiesel, offering mild conditions and direct use of waste oils, but limited by high enzyme cost and slower reactions.
Eolian (company)
Eolian is a United States standalone grid-scale battery storage developer and operator founded in 2020 by Aaron Zubaty, operating over 300 MW of batteries in the Texas ERCOT market.
Eos Energy Enterprises
Eos Energy Enterprises is an American company making zinc-based batteries for 3 to 12-hour utility and commercial energy storage, headquartered in Edison, New Jersey, and trading as NASDAQ: EOSE.
EPB (Chattanooga)
EPB, formally the Electric Power Board of Chattanooga, is a municipally owned utility providing electric power and fiber internet, known as America's first "Gig City."
EPCOR
EPCOR is a Canadian utility company, created by the City of Edmonton in 1995, that builds and operates electricity, gas, and water networks across Canada and the United States.
EPIC NGL Pipeline
The EPIC NGL Pipeline, formally the EPIC Y-Grade Pipeline, is a natural gas liquids pipeline in Texas running from the Permian Basin and Eagle Ford to the Gulf Coast.
EPR (nuclear reactor)
The EPR, or European Pressurized Reactor, is a 1,600 MWe generation III+ pressurized water reactor developed by France and Germany; four are operating as of 2025.
Epu Oil and Gas Field
The Epu Oil and Gas Field is an onshore field in OML 28 in Nigeria's Niger Delta, operated by Shell with first oil targeted for 2027.
Equinor
Equinor, until May 2018 named Statoil, is a Norwegian state-majority-owned energy company headquartered in Stavanger, producing oil and gas on the Norwegian continental shelf and building offshore wind.
Equipotential bonding
Equipotential bonding is the electrical interconnection of conductive parts of an installation to the earthing system so no dangerous voltage difference appears between touchable surfaces during faults.
Equivalent salt deposit density
Equivalent salt deposit density (ESDD) is an insulator pollution measure: the sodium chloride mass giving the same conductivity as the deposit, per unit surface area, in mg/cm².
Eraring power station
Eraring power station is a black coal-fired power station on Lake Macquarie in New South Wales, Australia. It supplies about 25% of the state's electricity.
Erawan Oil and Gas Field
The Erawan gas field (แหล่งเอราวัณ) is an offshore natural gas field in the Pattani Trough of the Gulf of Thailand, discovered in 1972 and producing Thailand's first petroleum in 1981.
Erawan-Rayon Gas Pipeline 1
The Erawan-Rayon Gas Pipeline 1 is a 415 km, 34-inch offshore gas pipeline carrying natural gas from the Erawan field in the Gulf of Thailand to Rayong, commissioned in 1981.
Erawan-Rayon Gas Pipeline 2
Erawan-Rayon Gas Pipeline 2 is a 36-inch offshore gas pipeline owned by PTT, running from the Erawan field in the Gulf of Thailand to Rayong, in service since 1996–1997.
Erawan-Rayon Gas Pipeline 3
The Erawan-Rayon Gas Pipeline 3 is a 414 km natural gas pipeline in Thailand, owned by PTT, carrying gas from the Erawan field in the Gulf of Thailand to Rayong.
Eren Holding
Eren Holding is a Turkish family-owned conglomerate headquartered in Istanbul, created in 1997 and employing about 14,000 people, whose ZETES coal plant in Zonguldak supplies about 6% of Türkiye's electricity.
Erha/Erha North Oil and Gas Field
The Erha/Erha North oil and gas field is a deepwater field offshore Nigeria in the Gulf of Guinea, operated by Esso, a subsidiary of ExxonMobil, producing since 2006.
Erneuerbare-Energien-Gesetz
The Erneuerbare-Energien-Gesetz (EEG) is Germany's Renewable Energy Sources Act, first enacted in 2000, which supports wind, solar, biomass, and other renewable electricity through feed-in tariffs and auctions.
Erroll Brown Davis Jr.
Erroll Brown Davis Jr. was an American electrical engineer and executive who led Alliant Energy and served as the first African American chancellor of the University System of Georgia.
Erskine Oil and Gas Field
Erskine is a high-pressure, high-temperature gas condensate field in the UK Central North Sea about 150 miles north-east of Aberdeen, the first HPHT field developed on the UK Continental Shelf.
Ertan hydroelectric plant
The Ertan hydroelectric plant (雅砻江二滩水电站) is a 3,300 MW hydroelectric station on the Yalong River in Sichuan, China, once the country's largest before Three Gorges.
Esah Oil and Gas Field
The Esah Oil and Gas Field is an offshore Mexican oil field in the Sonda de Campeche, discovered by Pemex's Esah-1 well in 2015, with 2P reserves of 43 million barrels.
ESB Group
ESB Group, also known as the Electricity Supply Board (Bord Soláthair an Leictreachais), is Ireland's state-owned electricity utility. Established in 1927, it operates generation, networks, and supply across Ireland and Great Britain.
Escobar FSRU
Escobar FSRU, also known as GNL Escobar, is Argentina's LNG import terminal, a floating storage and regasification unit opened in 2011 on the Paraná River near Buenos Aires.