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Nuna field
Nuna is an oil field on Alaska's North Slope operated by ConocoPhillips, which achieved first oil in 2024 with an expected peak of 20,000 barrels per day.
Nunzio J. Palladino
Nunzio Joe Palladino was an American nuclear engineer who led the Nautilus and Shippingport reactor core designs and chaired the Nuclear Regulatory Commission from 1981 to 1986.
Nuozhadu hydroelectric plant
The Nuozhadu hydroelectric plant (糯扎渡水电站) is a 5,850 MW hydropower station on the upper Mekong in Yunnan, China, whose dam is the largest of its kind in Asia.
NUREG-1150
NUREG-1150 is a 1990 US Nuclear Regulatory Commission report, Severe Accident Risks, that quantified severe accident risks at five representative nuclear power plants using probabilistic risk assessment.
Nurek hydroelectric plant
The Nurek hydroelectric plant (Нурекская ГЭС) is a 3,000 MW power station on the Vakhsh River in Tajikistan, home to the world's tallest embankment dam at 300 meters.
Nusantara Regas Satu Terminal
Nusantara Regas Satu Terminal is a floating storage and regasification terminal in Jakarta Bay, Indonesia, built around a converted LNG carrier and operating since 2012 as the country's first LNG receiving terminal.
NuScale Power
NuScale Power is an Oregon-based company that makes small modular reactors; in 2020 its design became the first SMR approved by the U.S. Nuclear Regulatory Commission.
NuStar Energy
NuStar Energy was an American midstream energy partnership headquartered in San Antonio, Texas, operating about 9,490 miles of pipeline for petroleum products, renewable fuels, and ammonia.
Nuvve Holding Corp.
Nuvve Holding Corp. is a San Diego, California green energy technology company whose vehicle-to-grid platform lets electric vehicle batteries store and resell energy to the grid.
Nuward
Nuward, short for Nuclear Forward, is a French small modular reactor project led by EDF with the CEA and Framatome, unveiled in 2019 and redesigned in 2024.
NX Horizon
NX Horizon is a horizontal single-axis solar tracker made by Nextpower, formerly Nextracker, for utility-scale solar plants, with rows that rotate independently on their own motors.
NY-Sun
NY-Sun is New York State's incentive program for solar installations, launched in 2012 and administered by NYSERDA, which pays installers cash incentives based on system size and location.
Nyagan GRES power station
Nyagan GRES (Няганская ГРЭС) is a gas-fired combined-cycle power station near Nyagan in Western Siberia, Russia, built by Fortum and inaugurated in 2013 with a capacity of 1,250 MW.
NYC Local Law 97
NYC Local Law 97 (LL97) is a 2019 New York City law imposing annual greenhouse gas emissions limits on buildings over 25,000 square feet, beginning in 2024.
Nysted Wind Farm
Nysted Wind Farm, also called Nysted Havmøllepark or Rødsand I, is a Danish offshore wind farm of 72 turbines with 165.6 MW capacity, commissioned in 2003.
Oak Creek Power Plant
The Oak Creek Power Plant is a coal-fired power station in Oak Creek, Wisconsin, 20 miles south of Milwaukee, forming Wisconsin's largest coal-fired plant with the Elm Road Generating Station.
Oak Grove Plant
Oak Grove Plant, formally the Oak Grove Steam Electric Station, is a two-unit, lignite-fired power plant in Robertson County, Texas, owned and operated by Luminant, a subsidiary of Vistra Corp.
Oak Hill Solar Facility
The Oak Hill Solar Facility is a pair of community solar farms with battery storage in Duanesburg, New York, developed by Eden Renewables and owned by PureSky Energy.
Oak Ridge National Laboratory
Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee, is the U.S. Department of Energy's largest science and energy laboratory, founded in 1943 as part of the Manhattan Project.
Oak Ridge Solar Farm
Oak Ridge Solar Farm is a 200 MW utility-scale solar power plant in northeastern Louisiana, developed by AES Clean Energy and opened in December 2023 as Louisiana's largest.
Oaky Creek Coal Mine
Oaky Creek Coal is an underground metallurgical coal mine in Queensland's Bowen Basin, operated by Glencore and the first in Australia to fully automate its longwall.
Oando
Oando PLC is a Nigerian integrated energy group headquartered in Lagos, listed in Nigeria and Johannesburg, and operator of core Niger Delta oil and gas joint venture assets since 2024.
Oasis Petroleum
Oasis Petroleum was an independent oil and gas exploration and production company founded in 2007 and headquartered in Houston, Texas, focused on the Williston Basin of North Dakota and Montana.
Obaiyed gas field
The Obaiyed gas field is a tight gas and condensate field in the Shushan Basin of Egypt's northern Western Desert, discovered by Shell in 1992 and producing since 1999.
Obaiyed-Amreya Northern Gas Pipeline
The Obaiyed-Amreya Northern Gas Pipeline, also called the Northern Gas Pipeline, carries natural gas about 400 km across Egypt to the national grid near Alexandria.
Oben-Geregu Gas Pipeline
The Oben-Geregu Gas Pipeline is a natural gas pipeline in Nigeria, completed in 2011, carrying gas from Edo State to the Geregu power plants in Kogi State.
Obiafu gas field
Obiafu is an operating oil and gas field in Rivers State, Nigeria, forming with adjacent Obrikom the Obiafu-Obrikom (OB-OB) gas complex that supplies Nigeria LNG.
Obigbo North gas field
Obigbo North is an operating onshore oil and gas field in Rivers State, Nigeria, north-east of Port Harcourt in OML 17, operated by TNOG Oil and Gas.
Obra Thermal Power Station
Obra Thermal Power Station is a coal-fired power station at Obra in Sonbhadra district, Uttar Pradesh, India, owned by UPRVUNL and expanded with two 660 MW supercritical units completed in 2024 and 2025.
Obrigheim Nuclear Power Plant
The Obrigheim Nuclear Power Plant (Kernkraftwerk Obrigheim, KWO) was a pressurized water reactor in Obrigheim, Germany, the country's first commercially used one, operating from 1968 to 2005.