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GaAs thin-film solar cell
A GaAs thin-film solar cell is a lightweight, flexible photovoltaic device whose few-micrometer gallium arsenide layer is separated from its wafer, usually by epitaxial lift-off, reaching 29.1% efficiency.
Gachsaran oil field
The Gachsaran oil field (گچساران) is a giant onshore oil and gas field in Khuzestan province, southwestern Iran, discovered in 1928 and developed into one of the country's most important oilfields.
Gadarwara Super Thermal Power Project
The Gadarwara Super Thermal Power Project is a coal-fired power station operated by NTPC in Narsinghpur district, Madhya Pradesh, India, with two 800 MW units.
Gadolinia fuel
Gadolinia fuel is uranium dioxide nuclear fuel with gadolinium oxide homogeneously mixed in as a burnable neutron absorber, holding down excess reactivity in light water reactors.
GAIL
GAIL (India) Limited, founded in 1984 as Gas Authority of India Limited, is a state-owned natural gas company in New Delhi that operates India's largest gas pipeline network.
Galilee Coal Mine
The Galilee Coal Mine is a proposed thermal coal mine in Queensland's Galilee Basin, developed by Clive Palmer's Waratah Coal and refused approval in 2023.
Gallatin Fossil Plant
Gallatin Fossil Plant, also called the Gallatin Steam Plant, is a coal-fired power station on the Cumberland River near Gallatin, Tennessee, operated by the Tennessee Valley Authority.
Galveston Bay Refinery
The Galveston Bay Refinery is a Marathon Petroleum refinery in Texas City, Texas, on Galveston Bay, opened in 1934 and refining 631,000 barrels of crude oil per day.
GameChange Solar
GameChange Solar is an American manufacturer of solar trackers and fixed-tilt racking systems, founded in 2012 and ranked second in global tracker shipments in 2025.
GAMMA 10 (tandem mirror)
GAMMA 10 is a tandem mirror plasma confinement device at the University of Tsukuba, Japan, the world's largest, operating since 1983 for controlled nuclear fusion research.
Gandhinagar Thermal Power Station
Gandhinagar Thermal Power Station (GTPS) is a coal-fired power plant in Gandhinagar, Gujarat, India, owned and operated by Gujarat State Electricity Corporation Ltd. with an installed capacity of 630 MW.
Ganesh Kailasam
Ganesh Kailasam is a chemical engineer and technology executive elected to the National Academy of Engineering in 2013 for developing high-performance polymer processes, later VP of Technology at OGCI Climate Investments.
GANEX process
The GANEX process (Grouped ActiNide Extraction) is a two-cycle solvent extraction method for reprocessing spent nuclear fuel, proposed by France's CEA in 2005, that recovers uranium, plutonium, and minor actinides together rather than separating pure plutonium.
Ganfeng Lithium
Ganfeng Lithium, formally Ganfeng Lithium Group Co., Ltd. (赣锋锂业), is a Chinese lithium producer founded in March 2000 and headquartered in Jiangxi Province, spanning refining, batteries, and recycling for customers including Tesla and BMW.
Gansu Chongxin power station
Gansu Chongxin power station (中电建崇信电厂) is a 1,320 MW coal-fired power station in Chongxin County, Pingliang, Gansu, China, owned by PowerChina and in commercial operation since 2010.
Gansu Wind Farm
The Gansu Wind Farm, formally the Jiuquan Wind Power Base, is a group of wind farms in Gansu Province, China, recognized as the world's highest-capacity wind farm.
Gansu Xigu power station
Gansu Xigu power station, also known as Lanzhou Xigu power station, is a coal-fired combined heat and power plant in Xigu District, Lanzhou, Gansu, with at least 990 MW capacity.
Gansu Zhengning power station
Gansu Zhengning power station (华能正宁发电厂), also known as the Huaneng Zhengning project, is a 2,000 MW coal-fired power station in Zhengning County, Gansu, China, fully operational since 2025.
Gao Te Electronics
Gao Te Electronics (高特电子) is a Hangzhou-based maker of battery management systems for energy storage, founded in 1998 and listed on ChiNext in June 2026.
Gaoshiti Gas Field
Gaoshiti Gas Field (高石梯气田) is a natural gas field in the central Sichuan Basin, China, producing from the Sinian Dengying Formation with breakthrough well Gaoshi-1 in 2011.
Garnet solid electrolyte
A garnet solid electrolyte is a ceramic lithium-ion conductor of the garnet mineral structure, most prominently LLZO, first reported in 2007 and valued for combining high lithium-ion conductivity with stability against lithium metal.
Garten Oil and Gas Field
Garten is an oil and gas field in the UK North Sea, discovered by Apache in 2018 and tied back to the Beryl Alpha platform.
Garyville Refinery
The Garyville Refinery is a Marathon Petroleum crude oil refinery in Garyville, Louisiana, along the Mississippi River, and the third-largest in the United States at 617,000 barrels per day.
Garzweiler surface mine
The Garzweiler surface mine (Tagebau Garzweiler) is a lignite opencast mine in the Rhenish mining district of North Rhine-Westphalia, Germany, operated by RWE, with extraction ending in 2030.
Gas absorption heat pump
A gas absorption heat pump is a gas-fired heat pump using an absorption cycle instead of an electric compressor, delivering more heat than the gas it burns.
Gas centrifuge
A gas centrifuge is a device that separates uranium isotopes by spinning UF6 gas at very high speed in a vertical rotor, and it is the only process used for commercial uranium enrichment worldwide since 2013.
Gas diffusion electrode
A gas diffusion electrode (GDE) is a porous composite electrode bringing gas, electrolyte, and catalyst into contact at three-phase interfaces, used in fuel cells and CO2 reduction.
Gas Distribution s.r.o.
Gas Distribution s.r.o. is a Czech natural gas distributor serving the South Bohemian Region and parts of the Vysočina Region, owned by GasNet in the ČEZ group.
Gas flare
A gas flare, also called a flare stack, is a device that burns waste gases at oil production sites, flaring about 151 billion cubic meters globally in 2022.
Gas holder
A gas holder, or gasometer, is a large container that stores town gas or natural gas at near atmospheric pressure, its volume changing as gas is added or withdrawn.