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Photon recycling in lead iodide perovskite solar cells
Photon recycling in lead iodide perovskite solar cells is the repeated reabsorption and reemission of photons within the absorber, first demonstrated directly in 2016, enabling long energy-transport distances.
Photon recycling in perovskite solar cells
Photon recycling in perovskite solar cells is the process by which photons from radiative recombination are reabsorbed within the perovskite, extending carrier diffusion length and raising open-circuit voltage.
Photoreforming
Photoreforming is a solar-driven photocatalytic process that couples oxidation of organic substrates such as biomass, plastic waste, or wastewater with water reduction, producing hydrogen gas and value-added carbon products instead of oxygen.
Photovoltaic backsheet
A photovoltaic backsheet is the polymer layer laminated to the rear of a solar module, providing electrical insulation and a weather barrier for the module's 25 to 30 year service life.
Photovoltaic encapsulant
A photovoltaic encapsulant is the polymer sheet, typically EVA, that embeds solar cells between glass and backsheet, transmitting light, cushioning cells, and insulating the circuit.
Photovoltaic glazing
Photovoltaic glazing is building glazing with integrated solar cells or films that generates electricity while serving as a window or facade element, a form of building-integrated photovoltaics used in near-zero-energy building design.
Photovoltaic module electroluminescence inspection
Photovoltaic module electroluminescence inspection is a non-destructive diagnostic method in which biased solar cells emit near-infrared light, recorded by a camera so defects appear dark.
Photovoltaic module flash test
A photovoltaic module flash test is an indoor measurement using a solar simulator's short light pulse to record a module's I-V curve under standard test conditions, giving maximum power, voltage, current, and fill factor.
Photovoltaic module recycling
Photovoltaic module recycling is the collection and processing of end-of-life solar panels to recover glass, aluminum, copper, silicon, and silver, and to manage toxic lead and cadmium.
Photovoltaic power station
A photovoltaic power station, also called a solar farm or solar power plant, is a large array of solar panels feeding electricity directly into the grid.
Photovoltaic system
A photovoltaic (PV) system is an assembly of solar cells, modules, inverters, and wiring that converts sunlight directly into electricity, with arrays sized for any electrical demand.
Photovoltaics
Photovoltaics (PV) is the conversion of sunlight into electricity using semiconductor solar cells wired into panels; solar PV is now among the cheapest sources of new power.
Photowatt
Photowatt was a French photovoltaic manufacturer founded in 1979 in Bourgoin-Jallieu, among the world's leading panel makers in the early 2000s, and France's last cell producer before closing in 2025.
Phulbari Coal Mine
The Phulbari Coal Mine is a proposed open-pit coal and power project at Phulbari in north-west Bangladesh, developed by GCM Resources and halted since 2006 by mass protest.
Phylion Battery (星恒电源)
Phylion Battery (星恒电源) is a Chinese lithium battery manufacturer founded in December 2003 in Suzhou, known for manganese-based batteries for electric two-wheelers with over 33 million packs sold.
Pichilingue LNG Terminal
The Pichilingue LNG Terminal, also called the La Paz Terminal, is a small LNG import terminal near La Paz, Mexico, opened by New Fortress Energy in July 2021.
Pickering nuclear power plant
The Pickering Nuclear Generating Station is an eight-reactor CANDU plant in Pickering, Ontario, on Lake Ontario, Ontario's first commercial nuclear plant; its B units began refurbishment in September 2026.
Piedmont Natural Gas
Piedmont Natural Gas is a Charlotte, North Carolina-based gas utility serving more than 1.1 million customers in the Carolinas and Tennessee, acquired by Duke Energy in 2016.
Piedra Del Aguila hydroelectric plant
The Piedra del Aguila hydroelectric plant is a 1,400 MW dam and power station on the Limay River in Neuquén and Río Negro, Argentina, operating since 1993.
Pierce Oil and Gas Field
The Pierce Oil and Gas Field is an oil and gas field in the UK Central North Sea, discovered in 1975 and producing first oil in 1999.
Pierre Bornard
Pierre Bornard is a French electric power engineer who was deputy chief executive of RTE, chaired the ENTSO-E board, and joined the US National Academy of Engineering in 2024.
Pierre M. Ailleret
Pierre M. Ailleret (1900–1996) was a French electrical engineer who directed the interconnection of France's regional power grids and helped shape Électricité de France after 1946.
Pigging
Pigging, or pipeline pigging, is the practice of cleaning and inspecting oil and natural gas pipelines by pushing a device called a pig through with line pressure.
Pike Solar Project
The Pike Solar Project is a 175 MW utility-scale solar plant near Fountain, Colorado, which entered commercial operation in December 2023 and powers about 46,300 homes.
Pikka
Pikka is an oil field and production unit on Alaska's North Slope, developed in the Nanushuk formation by Santos and Repsol, with first oil reached in May 2026.
Pilgrim nuclear power plant
The Pilgrim nuclear power plant in Plymouth, Massachusetts, was the state's only nuclear plant, operating a boiling water reactor from 1972 until its permanent shutdown in May 2019.
Piltun-Astokhskoye Oil and Gas Field
Piltun-Astokhskoye (Пильтун-Астохское) is an offshore oil and gas field in the Sea of Okhotsk off Sakhalin Island, discovered in 1986 and producing Russia's first offshore oil in 1999.
Pinch analysis
Pinch analysis is a thermodynamics-based process integration method that sets minimum energy targets for heating and cooling, then guides heat exchanger network design; case studies report 20 to 40 percent savings.
Pine Creek Oil and Gas Field
The Pine Creek Oil and Gas Field is an operating sour gas field in west-central Alberta, Canada, opened in 1957 and producing from Devonian, Jurassic, and Cretaceous reservoirs.
Pingdingshan Luyang power station
Pingdingshan Luyang power station, also known as Pingdingshan Second Power Plant, is a two-unit ultra-supercritical coal-fired power station in Lushan County, Pingdingshan, Henan, China, commissioned in 2010.