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Ignalina Nuclear Power Plant
The Ignalina Nuclear Power Plant (Ignalinos atominė elektrinė) was a Lithuanian nuclear power plant near Visaginas with two RBMK-1500 reactors, closed in 2004 and 2009 under EU accession commitments.
Ignition system
An ignition system is the assembly of components that initiates combustion in an internal combustion engine, using a high-voltage spark in petrol engines and compression ignition in diesels.
Ignition timing
Ignition timing is the crankshaft angle at which the spark plug fires in a spark-ignition engine, expressed in degrees before or after top dead center.
IGNITOR
IGNITOR is a compact, high-magnetic-field tokamak designed by MIT's Bruno Coppi to reach ignition in deuterium-tritium plasma without external heating, built as an Italian-Russian project.
Igor Sechin (Игорь Иванович Сечин)
Igor Sechin, Igor Ivanovich Sechin, is a Russian oil executive and Putin ally who has led the state oil company Rosneft since 2012; the US sanctioned him in 2014.
Igrim-Serov-Nizhny Tagil Gas Pipeline
The Igrim-Serov-Nizhny Tagil Gas Pipeline is a 525 km Gazprom pipeline running from the Igrim gas fields in Western Siberia to the industrial Urals, commissioned in 1966.
IHS Markit
IHS Markit was a London-based provider of information and analytics for the energy, financial services, and transportation industries, formed in 2016 and absorbed into S&P Global in 2022.
III-V multijunction solar cell
A III-V multijunction solar cell stacks semiconductor junctions, typically gallium indium phosphide and gallium arsenide, that split the solar spectrum to reach record efficiencies. It powers most satellites.
III-V/Si solar cell
A III-V/Si solar cell is a tandem photovoltaic device stacking a III-V semiconductor top cell, such as GaAs, on silicon to convert more sunlight than either material alone.
Ikata Nuclear Power Plant
The Ikata Nuclear Power Plant (伊方発電所) is a nuclear power station on the Sadamisaki Peninsula in Ehime Prefecture, Japan, owned by Shikoku Electric Power and opened in 1977.
Ilha Solteira hydroelectric plant
Ilha Solteira hydroelectric plant (Usina Hidrelétrica Ilha Solteira) is a Brazilian plant on the Paraná River with 3,444 MW from 20 Francis turbines, operating since 1973.
Ilijan power station
The Ilijan power station is a 1,271 MW natural gas-fired combined cycle plant in Batangas City, Philippines, operating since 2002 and described as the country's largest.
Illinois Commerce Commission
The Illinois Commerce Commission is the public utility regulator of Illinois, created in 1921 to set rates and ensure reliable, low-cost service from the state's utilities.
Illinois Power Agency
The Illinois Power Agency is an Illinois state agency that procures electricity and renewable energy credits for utilities like ComEd and administers the Illinois Renewable Portfolio Standard.
Illinois Zero Emission Credit program
The Illinois Zero Emission Credit program is a state program created by the 2016 Future Energy Jobs Act in which utilities buy credits supporting nuclear plants.
Ilo power station
The Ilo power station is a group of thermal power plants at the port of Ilo in southern Peru, originally built to supply SPCC's copper operations.
Imilorskoye Oil Field
The Imilorskoye oil field, formally the A. Usoltsev Field since 2022, is a large oil field in western Siberia operated by LUKOIL, with recoverable reserves of more than 100 million tonnes.
Impala South-East Oil Field
Impala South-East Oil Field, or Impala South East, is an offshore oil field in Block 3/05, about 37 km off Angola, discovered in 1985 and producing since 1988.
Impedance-based fault detection
Impedance-based fault detection, known in practice as distance protection, is a power system protection method that infers a fault's presence, direction, and location from apparent impedance at the relay.
Impedance-based fault location
Impedance-based fault location is the technique of finding where a short-circuit fault lies on a power line by converting measured voltage and current at the line terminals into a distance.
Imperial Oil
Imperial Oil is a Canadian integrated oil company founded in 1880 in London, Ontario, majority-owned by Exxon Mobil and marketing under the Esso and Mobil brands.
Impunzi Complex
The Impunzi Complex, also written iMpunzi, is a coal mining complex in the Witbank coalfield of Mpumalanga, South Africa, managed by Glencore and held with African Rainbow Minerals, producing export thermal coal near eMalahleni.
In Amenas-Haoudh El Hamra Oil Pipeline
The In Amenas-Haoudh El Hamra Oil Pipeline is a 630 km, 30-inch crude oil pipeline in Algeria, operated by Sonatrach as OH1 and commissioned in 1982.
In Salah Gas Pipeline
The In Salah Gas Pipeline is a 520 km natural gas pipeline in Algeria, carrying gas from the In Salah fields to the Hassi R'Mel hub since 2004.
In situ transesterification
In situ transesterification, also called direct transesterification, is a biodiesel production method that converts lipid-bearing biomass such as wet microalgae directly to fatty acid alkyl esters, skipping the separate oil-extraction step.
In-core neutron detector
An in-core neutron detector is a radiation sensor placed inside a nuclear reactor core to measure local neutron flux and verify the reactor's three-dimensional power distribution.
In-line inspection (pipelines)
In-line inspection, also known as smart pigging, inspects a pipeline from the inside using an instrumented tool, or smart pig, that travels with the product flow to detect flaws.
In-situ recovery
In-situ recovery, also called in-situ leaching, is a uranium mining method that dissolves ore underground with chemically treated solution and pumps the uranium to the surface without excavation.
In-vessel retention
In-vessel retention, also called in-vessel melt retention, is a severe accident management strategy that keeps molten reactor core material inside the vessel by cooling it externally with water.
Inaglinsky Coal Mine 1
Inaglinsky Coal Mine 1 (Shakhta Inaglinskaya-1, Шахта Инаглинская-1) is an underground coking coal mine near Neryungri in Yakutia, Russia, commissioned by Kolmar in 2020 with a capacity of 6 million tonnes a year.