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Heilbronn power station
Heilbronn power station (German: Heizkraftwerk Heilbronn) is a coal-fired combined heat and power plant on the Neckar river in Heilbronn, Germany, operated by EnBW and first commissioned in 1923.
Heilongjiang Baoqing power station
Heilongjiang Baoqing power station (神华国能宝清发电厂), also known as Shenhua Baoqing, is a 1,200 MW coal-fired power station in Baoqing County, Heilongjiang, China, commissioned in 2020.
Heimifeng hydroelectric plant
Heimifeng hydroelectric plant (黑麋峰抽水蓄能电站) is a 1,200 MW pumped-storage power station near Changsha, Hunan, China, the first of its kind built in the province, fully operational since 2010.
Hejin power station
Hejin power station (河津电厂) is a coal-fired power station in Hejin, southwestern Shanxi, China, whose first two 350 MW units were financed with Japanese official development assistance.
Hekinan power station
Hekinan power station (碧南火力発電所, Hekinan Thermal Power Station) is a 4,100 MW coal-fired plant in Hekinan, Aichi Prefecture, Japan, operated by JERA and the largest in Japan.
Heliac
A heliac is a type of stellarator, a magnetic fusion confinement device in which the magnetic axis winds helically around the torus, shaped by coils rather than plasma current.
Helically Symmetric Experiment
The Helically Symmetric Experiment (HSX) is a stellarator fusion research device at the University of Wisconsin–Madison and the only stellarator in the world with a quasi-helically symmetric magnetic field configuration.
Helicity Injected Torus
The Helicity Injected Torus (HIT) is a series of plasma physics experiments at the University of Washington in Seattle that develop helicity injection current drive for magnetic confinement fusion.
Helin power station
Helin power station is a coal-fired power station in Horinger, Hohhot, Inner Mongolia, China, with two supercritical units of at least 1,200 megawatts commissioned in 2019.
Heliogen
Heliogen is an American renewable energy company founded in 2013 and based in Pasadena, California, that develops concentrated solar power systems delivering carbon-free industrial heat, steam, and green hydrogen.
Helion Polaris
Helion Polaris is the seventh-generation field-reversed configuration fusion prototype of Helion Energy in Everett, Washington, which in February 2026 demonstrated measurable deuterium-tritium fusion at 150 million degrees Celsius.
Helios Solar Power Station
The Helios Solar Power Station is a 100 MW parabolic trough solar thermal complex in Ciudad Real, Spain, built by Abengoa and inaugurated in 2012.
Heliosat method
The Heliosat method is a family of algorithms that estimate surface solar irradiance from images taken by geostationary satellites, principally Meteosat, introduced by Cano and colleagues in 1986.
Heliostat
A heliostat is a mirror that tracks the sun on two axes to reflect sunlight onto a fixed target, as in concentrating solar power towers.
Heliotron E
Heliotron E is a helical magnetic-confinement fusion experiment built by Kyoto University, which began operating in 1980 and achieved a record 2 percent plasma beta for helical systems.
Hellisheiði Power Station
Hellisheiði Power Station (Hellisheiðarvirkjun) is the largest geothermal power plant in Iceland, near Reykjavík, generating 303 MW and heating more than half the capital region, and hosts the Carbfix carbon capture project.
Hematite photoanodes
Hematite photoanodes are photoelectrodes made of hematite (α-Fe₂O₃), a stable, low-cost, n-type iron oxide semiconductor that absorbs sunlight and oxidizes water in photoelectrochemical water-splitting cells.
Hemispherical combustion chamber
A hemispherical combustion chamber, also called a Hemi-head, is a domed engine cylinder head chamber that allows large valves and short flame travel, used in Chrysler's Hemi V-8s from 1951.
Hemlock Semiconductor Operations
Hemlock Semiconductor Operations (HSC) is an American producer of hyper-pure polysilicon based in Hemlock, Michigan, founded in 1979 and supplying the semiconductor and solar energy industries.
Henan Jiaozuo power station
Henan Jiaozuo power station (河南焦作电厂) is a coal-fired power station in Jiaozuo, Henan, China, with a century-long history; its new site runs two 660 MW ultra-supercritical units, 1,320 MW total.
Henan Shenhuo Coal&Power
Henan Shenhuo Coal & Power (河南神火煤电) is a Chinese coal mining, power, and aluminum smelting company, listed in Shenzhen and headquartered in Yongcheng, Henan Province.
Henan Shenhuo power station
Henan Shenhuo power station is a captive coal-fired power station in Yongcheng, Henan, China, with a single 600 MW unit supplying the Shenhuo aluminum smelter.
Henan Tianguan Fuel Ethanol
Henan Tianguan Fuel Ethanol is a state-licensed fuel ethanol producer in Henan Province, China, one of four pilot companies approved in 2001 and among the country's largest.
Henan Xin'an power station
Henan Xin'an power station (洛阳新安电厂) is a coal-fired power station complex of at least 1,800 MW in Xin'an, Luoyang, Henan, China, built by Wanji Holding Group.
Henan Xinmi power station
Henan Xinmi power station (永泰新密发电厂), also called the Yuzhong Xinmi power plant, is a coal-fired power and heat station in Xinmi, Zhengzhou, Henan, with about 2,600 MW of capacity built in 2006 and 2012.
Henan Xinzhongyi power station
The Henan Xinzhongyi power station (河南投资集团中益发电厂) is a coal-fired power station in Fengquan, Xinxiang, Henan, China, operating two 660 MW ultra-supercritical units commissioned in 2015.
Henan Yulian power station
Henan Yulian power station is a coal-fired captive power station of at least 900 MW in Gongyi, Henan, China, supplying an aluminum complex and district heating.
Henan Yuneng Holdings
Henan Yuneng Holdings is a provincial state-owned energy company in Zhengzhou, Henan, that generates and sells electricity and heat from coal-fired plants and is expanding into wind and solar.
Hendrina power station
Hendrina power station is a coal-fired power station operated by Eskom at Hendrina, Mpumalanga, South Africa, the largest station designed by ESCOM when built and its oldest continuously operated plant.
Henglian Wucaiwan power station
Henglian Wucaiwan power station (新疆恒联五彩湾电厂) is a 1,320 MW coal-fired power station in Wucaiwan industrial park, Jimsar County, Xinjiang, China, owned by Xinjiang Henglian Energy and opened in 2017.