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Supercritical water gasification of biomass
Supercritical water gasification (SCWG) of biomass is a thermochemical process that gasifies wet biomass in water above its critical point into hydrogen-rich gas, pioneered at MIT in 1978.
Supercritical water reactor
The supercritical water reactor (SCWR) is a Generation IV nuclear reactor concept whose water coolant operates above 374 °C and 22.1 MPa, reaching about 45% thermal efficiency.
Supergrid
A supergrid is a long-distance electricity transmission network, mainly high-voltage direct current lines at 500 kV or more, connecting remote renewable generation to demand centers and interconnecting national grids.
Superionic conductor
A superionic conductor is a solid material in which one ionic species moves with liquid-like mobility through a rigid crystal, giving exceptionally high ionic conductivity and use in solid-state batteries.
Superionic thermoelectrics
Superionic thermoelectrics are thermoelectric materials where a liquid-like sublattice of mobile copper or silver ions suppresses heat flow while a rigid framework carries current, as in Cu2Se.
Superior Energy Performance
Superior Energy Performance (SEP) was a US Department of Energy certification program verifying energy performance improvements in industrial facilities, requiring ISO 50001 conformance and concluding in 2025.
Superior refinery (Cenovus)
The Superior Refinery is an oil refinery in Superior, Wisconsin, the state's only refinery. Built in 1950, it processes 49,000 barrels per day for Cenovus Energy.
SuperOx
SuperOx (ЗАО «СуперОкс») is a Russian manufacturer of second-generation high-temperature superconducting wire, founded in Moscow in 2006, which supplies HTS tape to fusion projects including Commonwealth Fusion Systems.
Superphénix
Superphénix was a 1,200 MWe sodium-cooled fast breeder reactor at Creys-Malville, France, the world's first commercial-scale fast breeder, which operated from 1985 until its shutdown in 1998.
Superstrate configuration
The superstrate configuration is a thin-film solar cell architecture in which light enters through the transparent glass support, contrasting with the substrate configuration that allows opaque supports.
Suqian power station
Suqian power station, also known as Suqian Guodian power station, is a coal-fired combined heat and power plant in Suqian, Jiangsu, China, with at least 1,370 MW.
Sur de Texas-Tuxpan Gas Pipeline
The Sur de Texas-Tuxpan Gas Pipeline (Gasoducto Sur de Texas-Tuxpan) is an offshore natural gas pipeline in the Gulf of Mexico running from near Brownsville, Texas, to Tuxpan, Mexico.
Sur Independent power plant
The Sur Independent power plant is a 2,000 MW gas-fired combined cycle power station in Sur, Oman, owned by Phoenix Power and the largest in the Sultanate.
Suralaya Power Station
Suralaya Power Station (PLTU Suralaya) is a coal-fired power station of at least 6,025 MW in Cilegon, Banten, Indonesia, one of the country's largest and a backbone of the Java-Bali grid.
Surat Basin
The Surat Basin is a large intracratonic sedimentary basin covering about 300,000 km² of southern Queensland and northern New South Wales, and is Queensland's principal coal seam gas province.
Suratgarh Super Thermal Power Station
Suratgarh Super Thermal Power Station (SSTPS) is a coal-fired power station at Suratgarh, Rajasthan, India, owned by Rajasthan Rajya Vidyut Utpadan Nigam with 2,820 MW planned capacity.
Surface condenser
A surface condenser is a water-cooled shell-and-tube heat exchanger that condenses a steam turbine's exhaust steam, creating vacuum that sets turbine power output; the standard type in power stations.
Surface mining
Surface mining extracts ore or coal at or close to the earth's surface by removing the overlying soil and rock, in contrast to underground mining through shafts and tunnels.
Surface passivation of perovskite solar cells
Surface passivation of perovskite solar cells is the treatment of the perovskite layer's surface to neutralize charge-trapping defects, driving efficiencies from 3.8% in 2009 past 26%.
Surface rocksalt reconstruction in Ni-rich cathodes
Surface rocksalt reconstruction is the degradation of Ni-rich layered lithium-ion cathode surfaces, which transform from layered to spinel to inert rock-salt phases, accelerated by high nickel content, state of charge, and temperature.
Surgut GRES-1 power station
Surgut GRES-1 (Сургутская ГРЭС-1) is a large gas-fired power station in Surgut, Western Siberia, the region's first large power station, supplying electricity and heat since 1972 with a capacity of 3333 MW.
Surgut GRES-2 power station
Surgut GRES-2 (Сургутская ГРЭС-2) is a gas-fired thermal power station in Surgut, Russia, opened in 1985 and owned by PJSC Unipro. It is among the largest thermal power plants in the world.
Surgut-Gorky-Polotsk Oil Pipeline
The Surgut-Gorky-Polotsk oil pipeline is a 3,250 km trunk crude pipeline from Surgut in Western Siberia to Polotsk, Belarus, built between 1977 and 1981 and owned by Transneft.
Surgutneftegaz
Surgutneftegaz (ПАО «Сургутнефтегаз») is a Russian oil and gas company headquartered in Surgut, led by Vladimir Bogdanov since 1984 and producing 53.7 million tonnes of oil in 2024.
Suriname Block 58
Suriname Block 58 is an offshore oil block off Suriname, hosting the GranMorgu project, the country's first offshore oil development, with first oil expected in 2028.
Surmont oil sands project
The Surmont oil sands project is a steam-assisted gravity drainage bitumen operation near Fort McMurray, Alberta, developed in phases from 1997 and wholly owned by ConocoPhillips since 2023.
Surry Power Station
Surry Power Station is a two-unit nuclear power plant on the James River in Surry County, Virginia, operated by Dominion Energy and providing about 15 percent of its Virginia customers' electricity.
Sururu Oil and Gas Field
Sururu is a pre-salt oil field in the Santos Basin, offshore Brazil, part of the Iara cluster, producing through the P-68 floating vessel since November 2019.
Sushil K. Soonee
Sushil K. Soonee is an Indian power system engineer and founding CEO of POSOCO, now Grid India, credited with unifying India's regional grids into a National Grid by 2013.
Susquehanna nuclear power plant
The Susquehanna Steam Electric Station is a two-unit nuclear power plant in Salem Township, Pennsylvania, with General Electric boiling water reactors in commercial operation since 1983.