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Peninsular Gas Utilization Pipeline
The Peninsular Gas Utilization (PGU) pipeline is Peninsular Malaysia's high-pressure natural gas transmission network, operated by PETRONAS Gas Berhad since 1983, supplying power plants and industry.
Penly nuclear power plant
The Penly nuclear power plant is a French nuclear station on the Channel coast in Normandy, operated by EDF, with two 1,300 MWe reactors commissioned between 1990 and 1992.
Pennington Oil and Gas Field
Pennington Oil and Gas Field is an oil and gas field in the Niger Delta of Nigeria, discovered by well Pennington-1 in 1964 and currently operated by NNPC Ltd.
Pennsylvania Public Utility Commission
The Pennsylvania Public Utility Commission (PUC) is the Pennsylvania state agency that regulates rates and service for nearly 7,000 public utilities, from electricity to water.
Pennzoil
Pennzoil is an American brand of motor oil and automotive lubricants, first registered as a trademark in 1916 and now one of the best-known motor oil brands in North America, owned by Shell since 2002.
Pentose fermentation
Pentose fermentation is the microbial conversion of five-carbon sugars, chiefly xylose and arabinose, into ethanol, allowing lignocellulosic biomass to be used for fuel alcohol production.
Penuelas LNG Terminal
The Peñuelas LNG Terminal is a liquefied natural gas import and regasification terminal in Peñuelas, Puerto Rico, opened in 2000 and owned and operated by EcoEléctrica.
Peoples Natural Gas
Peoples Natural Gas is a rate-regulated natural gas utility serving about 700,000 customers in Pittsburgh and 18 counties of southwestern Pennsylvania, a subsidiary of Essential Utilities since 2020.
Pepco Holdings
Pepco Holdings was an American utility holding company in Washington, D.C., parent of Pepco, Delmarva Power, and Atlantic City Electric, acquired by Exelon in 2016.
Per Gunnar Engström
Per Gunnar Engström (1923–2015) was a Swedish electrical engineer at ASEA who led HVDC transmission development and was elected to the US National Academy of Engineering in 1992.
PERC (solar cell)
PERC, or Passivated Emitter and Rear Cell, is a silicon solar cell architecture invented by Martin Green's team at UNSW in 1983, dominant from 2018 until TOPCon displaced it from 2025.
Perdido (oil field)
Perdido is a deepwater oil and gas development in the Gulf of Mexico operated by Shell, which began production in 2010 through the world's deepest spar platform.
Perdido Development
The Perdido Development is a Shell-operated deepwater oil and gas complex in the US Gulf of Mexico using the world's deepest spar platform, with first production in 2010.
Peregrino Oil and Gas Field
The Peregrino Oil and Gas Field is a heavy-oil field in Brazil's Campos Basin, 85 kilometers offshore Rio de Janeiro, producing around 110,000 barrels daily since 2011.
Perenco
Perenco is a family-owned, independent oil and gas company founded in 1992 by Hubert Perrodo, operating mature and marginal fields in 14 countries rather than pursuing greenfield exploration.
Perfluorosulfonic acid membrane
A perfluorosulfonic acid membrane is a fully fluorinated proton-conducting polymer, best known as Nafion, developed by DuPont in the 1960s and standard in PEM fuel cells and electrolyzers.
Performance assessment (nuclear waste)
A performance assessment (PA) in radioactive waste disposal is a quantitative evaluation of potential radionuclide releases from a disposal facility and the resulting radiological doses to people.
Performance Based Regulation
Performance based regulation, or performance-based ratemaking, is utility regulation that ties revenues and earnings to achieved outcomes instead of recovered costs, using mechanisms like revenue decoupling and multiyear rate plans.
Performance ratio
The performance ratio (PR) is a dimensionless metric for photovoltaic systems, comparing actual delivered energy to ideal output under standard test conditions; typical values run 75 to 90 percent.
Performance-based rate
A performance-based rate is a solar incentive paying per kilowatt-hour of measured production over several years, used by the California Solar Initiative and Austin Energy, unlike up-front rebates.
Perito Moreno Gas Pipeline
The Perito Moreno Gas Pipeline (Gasoducto Perito Francisco Pascasio Moreno, GPM) is a natural gas pipeline in Argentina, built and inaugurated in 2023 as the Gasoducto Presidente Néstor Kirchner.
Perla Oil and Gas Field
Perla is a giant natural gas and condensate field in shallow waters of the Gulf of Venezuela, discovered by Repsol and Eni in 2009 and producing since July 2015.
Perm GRES power station
The Perm GRES power station (Пермская ГРЭС) is a gas-fired thermal power station at Dobryanka in Perm Krai, Russia, and the largest electricity supplier in Perm Territory.
Permanent magnet synchronous motor
A permanent magnet synchronous motor (PMSM) is an AC motor with permanent-magnet rotors that runs at synchronous speed, up to 10 percentage points more efficient than induction motors and dominant in electric vehicles.
Permian Express Oil Pipeline
The Permian Express Oil Pipeline is a crude oil pipeline system carrying Permian Basin crude from West Texas to Gulf Coast terminals and to Cushing, Oklahoma.
Permian Highway Pipeline
The Permian Highway Pipeline is a natural gas pipeline in Texas, carrying Permian Basin gas from the Waha hub to Katy since entering service in January 2021.
Permian Resources
Permian Resources is an independent oil and gas exploration and production company headquartered in Midland, Texas, formed in 2022 and focused on the Delaware Basin of the Permian Basin.
PERN (company)
PERN S.A. is a Polish state-controlled oil and fuel logistics company headquartered in Płock, whose 2,558 km of pipelines supply refiners in Poland and Germany.
Peroá Gas Field
The Peroá Gas Field is an offshore natural gas field in the Espírito Santo Basin, Brazil, about 52 kilometers off Linhares, producing from a fixed platform since 2006.
Perovskite encapsulation
Perovskite encapsulation is the sealing of perovskite solar cells in barrier materials, usually glass with a polymer layer and edge seal, to protect them from moisture and heat.