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Power purchase agreement
A power purchase agreement (PPA) is a long-term contract in which a buyer purchases electricity from a producer at an agreed price, typically for 10 to 25 years.
Power quality monitor
A power quality monitor is an instrument that analyzes voltage and current signals to detect, record, and quantify disturbances such as sags, swells, harmonics, flicker, and transients.
Power station
A power station, also called a power plant, is an industrial facility that generates electricity by driving a generator with a turbine turned by steam, water, or gas.
Power Supply Adjustor (Arizona)
The Power Supply Adjustor is a pass-through charge on Arizona Public Service electric bills that recovers fuel and purchased power costs, with rates reviewed yearly by the Arizona Corporation Commission.
Power synchronization control
Power synchronization control is a grid-forming control method for voltage-source converters that synchronizes to the AC grid through a power loop instead of a phase-locked loop.
Power system stabilizer
A power system stabilizer (PSS) is a supplementary controller on a synchronous generator's excitation system that damps low-frequency electromechanical rotor oscillations by modulating field voltage, extending power transfer capability.
Power system state estimation
Power system state estimation is a computational method that estimates voltage magnitudes and phase angles at every bus of an electric network from redundant, noisy power and voltage measurements.
Power transformer
A power transformer transfers energy between AC circuits at different voltage levels, stepping voltage up for transmission and down for distribution in the power grid.
Power usage effectiveness
Power usage effectiveness (PUE) is a data center efficiency metric, defined in 2007 as total facility energy divided by IT equipment energy, with a theoretical floor of 1.0.
Power-flow study
A power-flow study, or load-flow study, computes voltages, currents, and power flows in an electrical network, checking that delivery stays within voltage and thermal limits.
Power-from-shore
Power-from-shore is the supply of onshore grid electricity to offshore oil and gas installations via subsea cables, replacing gas turbines; it is Norway's most important measure for cutting petroleum emissions.
Power-line communication
Power-line communication, also known as power-line networking or broadband over powerline, carries data signals over existing electrical power lines for smart grids, smart metering, home automation, and in-home networking.
Power-to-gas
Power-to-gas (PtG) is an energy conversion technology that uses electrolysis to turn electricity into hydrogen or synthetic methane, linking the power grid with the gas grid for seasonal storage of renewables.
Power-to-X
Power-to-X (PtX, P2X) is a family of energy conversion technologies that use electricity, typically from renewable sources, to produce fuels and chemicals such as hydrogen, methane, and methanol.
PowerBuoy
PowerBuoy is a wave energy converter made by Ocean Power Technologies: a floating buoy whose motion drives a generator, first grid-connected in the US in 2010.
PowerChina New Energy Group (中电建新能源集团股份有限公司)
PowerChina New Energy Group, also known as POWERCHINA Renewable Energy Co., Ltd., is a Chinese company developing and operating wind and solar power projects across China for the PowerChina group.
PowerCo
PowerCo SE is Volkswagen Group's wholly owned battery company, producing Unified battery cells for electric vehicles, with gigafactories in Salzgitter, Valencia, and St. Thomas, Canada.
PowerCON
PowerCON is a family of locking three-conductor AC mains connectors made by Neutrik, introduced in 1996 and now standard on professional moving-head light systems and other AV equipment.
Powerfield
PowerField is a Dutch solar energy company founded by Jean-Louis Bertholet that develops solar parks, battery storage, and EV charging stations via its PowerGo subsidiary.
Powering Past Coal Alliance
The Powering Past Coal Alliance is a coalition, launched by Canada and the UK in Bonn in 2017, committed to phasing out unabated coal power by 2030 in OECD countries.
PowerSouth Energy Cooperative
PowerSouth Energy Cooperative is a generation and transmission electric cooperative headquartered in Andalusia, Alabama. Founded in 1941, it wholesales power to 18 cooperatives and four municipal systems.
Powerton Generating Station
Powerton Generating Station is a coal-fired power plant in Pekin, Illinois, owned by NRG Energy, with about 1,538 MW of capacity from two units opened in 1972 and 1975.
Powin Energy
Powin Energy, later Powin, LLC, was an Oregon-based maker of utility-scale battery energy storage systems founded in 1989, which entered Chapter 11 bankruptcy with liquidation confirmed in December 2025.
Poza Rica Oil and Gas Field
The Poza Rica oil and gas field is a giant petroleum field in Veracruz, Mexico, discovered by Shell in 1930 and Mexico's main oil source for three decades.
PPL Corporation
PPL Corporation, originally Pennsylvania Power & Light, is an Allentown, Pennsylvania energy holding company formed in 1920 that delivers electricity in four states and gas in two.
Prabumulih Oil and Gas Field
The Prabumulih oil and gas field is a producing hydrocarbon field complex in and around Prabumulih, South Sumatra, Indonesia, with a stated capacity of 15,000 BOPD of oil and 200 MMSCFD of gas.
Pradhan Mantri Surya Ghar Muft Bijli Yojana
Pradhan Mantri Surya Ghar Muft Bijli Yojana is India's rooftop solar subsidy scheme, launched in February 2024 to give households up to 300 free electricity units monthly.
Pradhan Mantri Ujjwala Yojana (प्रधानमंत्री उज्ज्वला योजना)
Pradhan Mantri Ujjwala Yojana, also known as Ujjwala Yojana, is an Indian government scheme launched in May 2016 that gives deposit-free LPG connections to poor households' women.
Prai (TNB) power station
Prai (TNB) power station is a 1,071 MW combined-cycle gas turbine plant in Prai, Penang, Malaysia, owned by Tenaga Nasional Berhad and fully commissioned in 2016.
Prairie Island nuclear power plant
The Prairie Island nuclear power plant is a two-unit nuclear station in Welch, Minnesota, on the Mississippi River, owned by Xcel Energy and operating since 1973.