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Copper indium selenide
Copper indium selenide (CuInSe₂, often abbreviated CIS) is a chalcopyrite compound semiconductor used as the light absorber in thin-film solar cells; alloyed with gallium it forms CIGS.
Copper indium selenide solar cell
A copper indium selenide solar cell (CIS) is a thin-film photovoltaic device using the chalcopyrite semiconductor CuInSe₂ as its absorber; the first cell was reported by Kazmerski in 1976.
Copper redox mediators in dye-sensitized solar cells
Copper redox mediators are copper complexes, typically Cu(I)/Cu(II) couples, that shuttle electrons between dye and electrode in dye-sensitized solar cells, achieving over 32% efficiency under indoor light.
Copper–chlorine cycle
The copper–chlorine cycle is a hybrid thermochemical cycle for splitting water into hydrogen, using heat with one electrochemical step and a maximum temperature of about 550 °C.
CopperString
CopperString is a Queensland transmission project connecting Mount Isa and the North West Minerals Province to the National Electricity Market near Woodstock, acquired by the state government in 2023.
Coral North
Coral North, also called Coral Norte, is a floating LNG project under construction in deep water off northern Mozambique, a replica of Coral South with production targeted for 2028.
Coral South FLNG Terminal
Coral South FLNG (Coral Sul FLNG) is a floating liquefied natural gas facility operated by Eni offshore Cabo Delgado, Mozambique, producing the country's first LNG in 2022.
Corbetti Geothermal Project
The Corbetti Geothermal Project is a planned geothermal power development in the Main Ethiopian Rift, about 250 km south of Addis Ababa, intended to deliver up to 150 MW.
Cordero Rojo Coal Mine
The Cordero Rojo Coal Mine is a surface thermal coal mine in Campbell County, Wyoming, about 22 miles south of Gillette, owned by the Navajo Transitional Energy Company.
Core analysis
Core analysis is the laboratory study of rock samples taken during or after drilling a well, measuring reservoir properties such as porosity, permeability, and fluid saturation.
Core catcher
A core catcher is a passive severe-accident device in a nuclear plant that catches molten corium after reactor pressure vessel failure and cools it, protecting the containment.
Core damage frequency
Core damage frequency (CDF) is a nuclear regulatory risk metric expressing the likelihood that an accident damages reactor fuel, derived from a Level 1 probabilistic risk assessment.
Core Laboratories
Core Laboratories is a Delaware-incorporated oilfield services company founded in Dallas in 1936 that measures reservoir rocks and fluids to help oil and gas producers enhance hydrocarbon recovery.
Core Lithium
Core Lithium Ltd is an Australian hard-rock lithium mining company that owns the Finniss Lithium Operation southwest of Darwin, restarted in 2026 after a 2024 suspension.
Corium (nuclear reactor)
Corium is the once-molten material formed during a nuclear reactor meltdown, a mixture of nuclear fuel, fission products, control rods, and structural materials, known from Chernobyl and Fukushima.
Corn ethanol
Corn ethanol is fuel ethanol produced from corn kernel starch, supplying nearly all US fuel ethanol, consuming about 40% of the corn crop, and blended into most gasoline.
Corn silage
Corn silage, also called maize silage, is the whole corn plant chopped and preserved by anaerobic fermentation in a silo, used chiefly as feed for dairy and beef cattle.
Corn stover
Corn stover is the cobs, leaves, husks, and stalks left after a corn harvest, the most abundant US agricultural residue and a leading cellulosic ethanol feedstock.
Corona loss
Corona loss is the power dissipated when air around a high-voltage conductor ionizes, an effect of voltage that matters mainly on lines of 345 kV and higher.
Corona ring
A corona ring is a circular conductive fitting, usually a metal toroid, attached to high-voltage equipment terminals to spread the electric field gradient and prevent corona discharge, reducing noise and radio interference.
Coronado Global Resources
Coronado Global Resources is a metallurgical coal producer and exporter with mining operations in Queensland, Australia and the Central Appalachian region of the United States, listed on the ASX.
Corporación Eléctrica Nacional
Corporación Eléctrica Nacional (CORPOELEC, Corpoelec) is Venezuela's state-owned electricity company, created in 2007 to consolidate the country's public and private utilities into a single national operator.
Corporate Green Power Programme
The Corporate Green Power Programme (CGPP) is a Malaysian government scheme, launched in 2022, under which companies sign virtual power purchase agreements with solar producers to claim renewable energy use.
Corporate Renewable Energy Supply Scheme
The Corporate Renewable Energy Supply Scheme (CRESS) is a Malaysian framework, launched in September 2024, letting corporate consumers in Peninsular Malaysia buy renewable electricity directly from developers via the national grid.
CorPower Ocean
CorPower Ocean is a Swedish wave energy company in Stockholm, founded in 2009, whose C4 point-absorber converter has delivered grid power off Aguçadoura, Portugal, since 2023 and earned the first DNV wave energy certification in 2026.
Corpus Christi LNG
Corpus Christi LNG is a liquefied natural gas export terminal on Corpus Christi Bay in Texas, owned by Cheniere Energy and first producing LNG in 2018.
Corpus Christi Pipeline
The Corpus Christi Pipeline is a Cheniere Energy natural gas pipeline running from near Sinton, Texas, to the Corpus Christi LNG export terminal, in service since 2018.
Corrib Oil and Gas Field
The Corrib gas field, discovered in 1996 about 83 kilometers off County Mayo, Ireland, began production in 2015 and is the country's only producing gas field, supplying 100% of domestic gas production.
Cortes La Muela I hydroelectric plant
Cortes La Muela I is an underground pumped-storage hydroelectric plant on the Júcar river in Valencia, Spain, pumping water about 500 meters up to a plateau reservoir for peak demand.
Corvus Energy
Corvus Energy is a Canadian-founded, Norwegian-owned company making lithium-ion battery systems for ships, ferries, offshore vessels, and ports. It supplied batteries for the MF Ampere, the world's first fully electric ferry.