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Casing cementing
Casing cementing is the process of pumping cement slurry down a well's steel casing and up the annulus, bonding the casing to the formation and sealing fluid zones.
Casing while drilling
Casing while drilling, also called casing drilling, is a well-construction technique in which the steel casing serves as the drillstring, drilling and casing the well in one operation.
Casper refinery
The Casper refinery is an oil refinery in Casper, Wyoming, owned and operated by HF Sinclair, with a crude capacity of 30,000 barrels per day.
Caspian Pipeline Consortium
The Caspian Pipeline Consortium (CPC) is a joint-stock company that operates a 1,511-kilometer oil pipeline from Kazakhstan's Tengiz field to a terminal near Novorossiysk on the Black Sea.
Castaic Power Plant
The Castaic Power Plant, also called Castaic Powerplant, is a 1,275-megawatt pumped-storage hydroelectric plant on the California Aqueduct about 40 miles northwest of Los Angeles.
Castilla Oil Field
Castilla Oil Field (Campo Castilla) is a giant heavy-oil field in the Llanos Basin of eastern Colombia, discovered in 1969 and Ecopetrol's main producing field at close to 100 thousand barrels per day.
Castle Peak power station
Castle Peak power station is a coal-fired power station at Tap Shek Kok near Tuen Mun, Hong Kong, opened in 1982 and operated by CLP, now phasing out coal.
Castleton Commodities
Castleton Commodities International is a privately held American energy merchant based in Stamford, Connecticut, founded in 1997 and known for buying Morgan Stanley's physical oil business in 2015.
CASTOR (tokamak)
CASTOR (Czech Academy of Sciences TORus) was a small tokamak with a circular plasma cross-section operated in Prague from 1977 to 2006, formerly TM-1-MH and later renamed GOLEM.
Castrol
Castrol is a British lubricants brand founded in 1899 by Charles Wakefield, named for the castor oil in its early motor oils, and owned by bp since 2000.
Catalytic cracking
Catalytic cracking is a petroleum refining process that uses acid catalysts to break large hydrocarbon molecules into gasoline, light fuel oil, and petrochemical feedstocks like propylene.
Catalytic dehydrogenation of LOHC
Catalytic dehydrogenation of liquid organic hydrogen carriers (LOHCs) is the endothermic, catalyst-driven step that releases hydrogen from the loaded carrier so it can be reloaded and reused.
Catalytic polysulfide conversion in lithium-sulfur batteries
Catalytic polysulfide conversion in lithium-sulfur batteries is the acceleration by catalysts of redox reactions converting soluble lithium polysulfides to solid lithium sulfide, suppressing the shuttle effect.
Catawba Nuclear Station
Catawba Nuclear Station is a two-unit nuclear power plant on Lake Wylie in York County, South Carolina, operated by Duke Energy and generating 2,310 megawatts.
Catcher Oil and Gas Field
Catcher is a producing oil field in the UK Central North Sea about 170 km southeast of Aberdeen, developed with the Varadero and Burgman fields through the BW Catcher FPSO.
Cathedral Energy Services
Cathedral Energy Services was a Calgary, Alberta oilfield services company providing directional drilling and MWD services in Canada and the United States, renamed ACT Energy Technologies in July 2024.
Cathode electrolyte interphase
The cathode electrolyte interphase (CEI) is a thin film of electrolyte decomposition products that forms on the cathode of a lithium battery during operation, analogous to the anode-side SEI.
Cathode recycling
Cathode recycling is the recovery of cathode material or its metals from spent lithium-ion batteries, via pyrometallurgy, hydrometallurgy, and direct recycling that preserves the cathode structure.
Cattenom nuclear power plant
The Cattenom nuclear power plant (centrale nucléaire de Cattenom) is a French nuclear plant on the river Moselle near Thionville, with four 1,300 MWe reactors run by EDF.
Caval Ridge Coal Mine
Caval Ridge Coal Mine is an open-cut metallurgical coal mine in Queensland's Bowen Basin, 17 km south of Moranbah, owned by the BHP Mitsubishi Alliance and opened in 2014.
Çayırhan Coal Mine
The Çayırhan Coal Mine (Çayırhan Linyit İşletmesi) is an underground lignite mine in Nallıhan, Ankara Province, Turkey, about 125 km north-west of Ankara, feeding the adjacent 620 MW thermal power plant.
Cayuga Generating Station
Cayuga Generating Station is a Duke Energy Indiana power plant in Cayuga, Indiana, on the Wabash River, with about 1,185 MW from coal-fired and gas units.
CCC Norte-III power station
CCC Norte-III, also written Norte III, is a 907 MW gas-fired combined cycle power plant in Ciudad Juárez, Chihuahua, Mexico, near the US border, supplying more than 500,000 homes and businesses since 2020.
CCC Salamanca power station
The CCC Salamanca power station (Central Ciclo Combinado Salamanca) is a 927 MW gas-fired combined cycle plant in Salamanca, Guanajuato, Mexico, owned by CFE and opened in 2025.
CCL Stage 3 Project
The CCL Stage 3 Project, or Corpus Christi Liquefaction Stage 3, is an expansion of the Corpus Christi LNG terminal in Texas, built by Bechtel for Cheniere Energy with seven trains exceeding 10 mtpa.
CCU Coal and Construction
CCU Coal and Construction is a privately held American surface coal mining and heavy construction company in Coshocton, Ohio, formed by Charles C. Ungurean in 2018.
CCU Patterson Strip Mine
The CCU Patterson Strip Mine is a small surface bituminous coal mine in Harrison County, Ohio, operated by CCU Coal and Construction LLC and abandoned in 2024.
CCU Tuscarawas Strip Mine
CCU Tuscarawas Strip is an active surface bituminous coal mine near Stone Creek in Tuscarawas County, Ohio, producing coal since 1989 and peaking at 987,444 short tons in 2010.
CECONY
CECONY, formally the Consolidated Edison Company of New York, is a regulated utility delivering electricity, natural gas, and steam in New York City and Westchester County.
Cedar Bayou power station
Cedar Bayou power station is a natural gas-fired generating complex in Baytown, Texas, owned by NRG Energy since 2006 and selling power into the ERCOT grid.