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Greater Nile Oil Pipeline
The Greater Nile Oil Pipeline is a 1,610 km crude oil pipeline in Sudan running from the Heglig oil fields to the Bashayer terminal on the Red Sea.
Greater Sunrise
Greater Sunrise is an undeveloped gas and condensate field in the Timor Sea, discovered by Woodside in 1974, held undeveloped for decades by maritime boundary disputes between Australia and Timor-Leste.
Greater Tortue Ahmeyim FLNG Terminal
The Greater Tortue Ahmeyim FLNG Terminal is a floating liquefied natural gas facility moored offshore on the maritime border between Mauritania and Senegal, which made both countries LNG exporters in 2025.
Green Button
Green Button is an industry-led data standard, launched in 2012, that gives utility customers secure access to their own electricity, natural gas, and water usage data.
Green electricity certificate (China)
A green electricity certificate (GEC, 绿证) is China's official electronic certificate for renewable electricity, one per 1,000 kWh, piloted in 2017 and extended to all renewable projects in 2023.
Green Energy Open Access (India)
Green Energy Open Access is an Indian regulatory framework, created by 2022 rules, letting consumers buy renewable power directly from generators instead of distribution licensees.
Green Factory (certification)
Green Factory (绿色工厂) certification is a voluntary Chinese government designation for manufacturing plants meeting standards for low energy use and clean production, run by MIIT since 2016.
Green Flexibility
Green Flexibility is a German developer, owner, and operator of grid-scale battery storage systems, founded in Bavaria in 2023 by former executives of the home-storage company sonnen.
Green Genius
Green Genius, formerly Modus Energy International B.V., is a Lithuanian renewable energy developer and independent power producer that develops solar, wind, biomethane, and battery storage assets across Lithuania, Latvia, Poland, and Italy.
Green hydrogen
Green hydrogen is hydrogen made by splitting water with renewable electricity from solar or wind, producing no CO2 and supplying less than 1% of global hydrogen.
Green Hydrogen Systems
Green Hydrogen Systems A/S was a Danish manufacturer of modular pressurised alkaline electrolysers for green hydrogen from renewable electricity, founded in Kolding, Denmark, in 2007 and bankrupt by 2025.
Green Innovation Fund
The Green Innovation Fund (グリーンイノベーション基金事業) is a Japanese research funding program run by NEDO supporting decarbonization projects for up to 10 years, including hydrogen-based steelmaking.
Green Mark (building certification)
Green Mark is Singapore's green building rating system, launched by the Building and Construction Authority in January 2005 and the first green building rating system designed for the tropical climate.
Green Plains Inc.
Green Plains Inc. is an American renewable fuels and agricultural technology company based in Omaha, Nebraska. Founded in 2004, it produces ethanol, animal feed, and renewable corn oil from corn.
Green steel
Green steel is steel made with much lower greenhouse gas emissions than coal-based steelmaking, using electric arc furnaces or hydrogen-based direct reduction of iron ore.
Green-e
Green-e is a voluntary certification program administered by the non-profit Center for Resource Solutions, launched in 1997 as the first independent certification program for renewable electricity in North America.
Green-solvent processing of perovskite solar cells
Green-solvent processing of perovskite solar cells is the fabrication of these devices using low-toxicity solvents such as ethanol and GVL instead of hazardous DMF and NMP.
Greene County Steam Plant
The Greene County Steam Plant, also called Plant Greene County, is an Alabama Power generating station near Demopolis, Alabama, on the Black Warrior River, opened in 1965.
Greenergy
Greenergy is a British fuel supply and renewable fuels company founded in 1992, supplying over 15 billion liters of fuel annually across the UK, Ireland, Canada, and France.
Greenfield Energy Centre
Greenfield Energy Centre is a 1,005 MW natural gas-fired combined cycle power plant in Courtright, Ontario, near Sarnia, built by Calpine and Mitsui for $600 million and one of Canada's largest gas-fired stations.
Greenhills Coal Mine
Greenhills is an open-pit metallurgical coal mine near Elkford in the Elk Valley of southeastern British Columbia, producing about 6 Mt of steelmaking coal a year.
GreenPro Ecolabel
GreenPro is India's Type 1 ecolabel for products, administered by the Confederation of Indian Industry since 2015, certifying life-cycle environmental performance across 63 product categories.
Greensville County power station
The Greensville County power station is a 1,588 MW natural gas-fired combined-cycle power station owned by Dominion Energy near Emporia, Virginia, that entered commercial operation in December 2018.
Greenvolt
Greenvolt is a Lisbon-based renewable energy group working in biomass, wind, solar, and storage; it listed on Euronext Lisbon in 2021 and has been wholly owned by KKR since late 2024.
Greenvolt Power
Greenvolt Power is the Portugal-based battery energy storage and renewables development arm of Greenvolt Group, owned by KKR since 2024; it inaugurated one of Poland's largest battery systems in July 2026.
Greenwood Coal Mine
Greenwood Coal Mine is an anthracite coal strip mine in the Panther Valley of eastern Pennsylvania near Tamaqua, mined since the 1800s and now operated as Lehigh Anthracite.
Gregory S. Vassell
Gregory S. Vassell (1921–2016) was an American power systems engineer who planned American Electric Power's 765-kV transmission network and joined the National Academy of Engineering in 1980.
Greifswald nuclear power plant
The Greifswald nuclear power plant (Kernkraftwerk Greifswald), also called Lubmin, was an East German plant of Soviet WWER-440 reactors on the Baltic coast, shut down in 1990.
Gremikhinskoye Oil Field
The Gremikhinskoye oil field (Гремихинское месторождение) is an oil field in Udmurtia, Russia, operated by Udmurtneft and known for its high-viscosity oil, discovered in 1964.
Grenergy Renovables
Grenergy Renovables is a Spanish independent power producer, founded in 2007 and headquartered in Madrid, that develops solar and battery storage projects in Europe, Latin America, and the United States.