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Uech Oil and Gas Field
Uech is a mature offshore oil and gas field in Mexican waters of the Gulf of Mexico off Tabasco, operated by Pemex and discovered in 1986.
Ugutskoye Oil Field
The Ugutskoye Oil Field (Угутское месторождение) is an operating oil field in the Surgut district of Western Siberia, Russia, near the village of Ugut, operated by Rosneft subsidiary RN-Yuganskneftegaz since 1988.
UK miners' strike (1984–85)
The UK miners' strike of 1984–85 was a year-long national strike by coal miners, led by Arthur Scargill's NUM against pit closures, ending in defeat in March 1985.
UK Power Networks
UK Power Networks (UKPN) is a British electricity distribution network operator serving London, the South East, and East of England, created in 2010 and sold to ENGIE in 2026.
UK SAF Mandate
The UK SAF Mandate is a legal obligation on UK aviation fuel suppliers to include a rising share of sustainable aviation fuel, taking effect on 1 January 2025.
UK–Ireland Interconnector (gas pipeline)
The UK–Ireland Interconnector is a natural gas pipeline carrying gas from Moffat in southwest Scotland to Ireland, first completed in 1993 and supplying most of Ireland's gas.
Ukai Thermal Power Station
This coal-fired power station, operated by GSECL near the Ukai Dam in Gujarat, India, began operations in 1976 and is currently adding an 800 MW supercritical expansion.
Ukhaa Khudag Coal Mine
Ukhaa Khudag, also known as UHG, is an open-pit coking coal mine in Umnugobi, Mongolia, part of the Tavan Tolgoi deposit, operated by Energy Resources LLC since 2009.
Ukhta-Torzhok (Yamal) Gas Pipeline
The Ukhta-Torzhok (Yamal) Gas Pipeline (Ухта — Торжок) is a Russian trunk pipeline system carrying Yamal gas from Ukhta toward Torzhok, feeding northwestern Russia and exports like Nord Stream.
Ukhta-Yaroslavl Oil Pipeline
The Ukhta-Yaroslavl Oil Pipeline (Магистральный нефтепровод «Ухта – Ярославль») is a Transneft trunk pipeline, opened in 1974, that carries Timan-Pechora crude 1,135 km to Yaroslavl.
Ukpam Oil Field
The Ukpam Oil Field is an operating conventional oil field in Nigeria, discovered in 1989 and fully owned and operated by NNPC Ltd in concession OML 123.
Ukrenergo
Ukrenergo (НЕК «Укренерго») is Ukraine's sole state-owned electricity transmission system operator, established in 1998 to control and run the main power grid, which it synchronized with Continental Europe in 2023.
Ukrtransnafta
Ukrtransnafta is Ukraine's state-owned operator of the trunk oil pipeline system, created in 2001 as a wholly owned subsidiary of Naftogaz, moving crude to refineries and Europe.
UL 1741
UL 1741 is a UL safety and certification standard for inverters, converters, charge controllers, and interconnection equipment used with distributed energy resources, first published in 1999 and relied on by US utilities for grid interconnection approval.
UL 2799
UL 2799 is a UL Solutions standard for validating landfill waste diversion claims, underlying its Zero Waste to Landfill program with Silver, Gold, and Platinum tiers.
UL 9540A
UL 9540A is a binational American and Canadian test method that measures thermal runaway fire propagation in battery energy storage systems, producing data rather than pass/fail certification.
Ula oil field
Ula is an oil field in block 7/12 of the southern Norwegian North Sea, discovered in 1976 and producing since 1986 under Aker BP, serving as the processing hub for the Tambar, Blane, and Oda fields.
Ulaanbaatar-4 power station
Ulaanbaatar Thermal Power Plant No. 4, known as TPP-4 or CHP-4, is a coal-fired combined heat and power plant in Ulaanbaatar, Mongolia, commissioned in 1983 with Soviet assistance.
Ulan Complex Coal Mine
The Ulan Complex Coal Mine is a Glencore-owned coal mining operation near Ulan in central-west New South Wales, Australia, producing thermal coal mainly for export since the 1920s.
Ulan Mulun Coal Mine
Ulan Mulun Coal Mine (乌兰木伦煤矿) is an underground coal mine in Ejin Horo Banner, Ordos, Inner Mongolia, China, opened in 1992 and now producing 5.10 Mt of coal a year.
Ulba Metallurgical Plant
The Ulba Metallurgical Plant (Ульбинский металлургический завод) is a Kazakhstani metallurgical company in Ust-Kamenogorsk, founded in 1949 and owned by Kazatomprom, producing uranium fuel, beryllium, and tantalum.
Ule-Amuay Oil Pipeline
The Ule-Amuay Oil Pipeline (oleoducto Ulé-Amuay) is a 230-kilometer crude oil pipeline in western Venezuela, operated by PDVSA, carrying oil from Lake Maracaibo's Ulé tank farm to the Amuay refinery since 1948.
Ulsan LNG Terminal
The Ulsan LNG Terminal is an LNG import, storage, and regasification terminal at Ulsan New Port, South Korea, operated by Korea Energy Terminal and opened in November 2024.
Ulsan power station
Ulsan power station (울산화력발전소) is a group of electricity generating facilities in Ulsan, South Korea, including the former oil-fired Ulsan Thermal Power Plant and newer gas-fired combined-cycle capacity.
Ultium CAM
Ultium CAM is a joint venture of POSCO Future M and General Motors, formed in 2022, that produces cathode active material for GM's Ultium batteries at Bécancour, Quebec.
Ultium Cells Holdings LLC
Ultium Cells Holdings LLC is a Delaware holding company that wholly owns Ultium Cells LLC, the joint venture of General Motors and LG Energy Solution making electric vehicle battery cells.
Ultra-high-nickel cathodes
Ultra-high-nickel cathodes are layered lithium-ion battery cathode materials, such as NCM90 and NCM95, in which nickel accounts for at least 90 mol% of transition metals, delivering high capacity while reducing cobalt use.
Ultra-low emission retrofit (China)
An ultra-low emission retrofit in China upgrades coal-fired power units to meet emission limits as tight as gas turbines; over 95% of units completed it by 2023.
Ultra-low-sulfur diesel
Ultra-low-sulfur diesel (ULSD) is diesel fuel with sulfur limited to 15 ppm, required for US highway diesel since 2006's phase-in and for all highway use after 2010.
Ultra-low-temperature district heating
Ultra-low-temperature district heating (ULTDH) is district heating supplying buildings below 50 °C, cutting distribution losses and enabling low-grade heat sources, with booster heat pumps for hot water.