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Alcohol fuel
Alcohol fuel, also known as alcohol as a fuel, is liquid alcohol, principally ethanol and to a lesser extent methanol, burned in internal combustion engines either neat or blended with gasoline.
Alcohol-to-jet synthetic paraffinic kerosene
Alcohol-to-jet synthetic paraffinic kerosene (ATJ-SPK) is a sustainable aviation fuel blendstock produced by chemically upgrading ethanol and isobutanol into jet fuel, certified since 2016 for blending up to 50% with conventional jet fuel.
Alden P. Yates
Alden P. Yates was an engineer and construction executive who served as president of Bechtel Group from 1983, succeeding George P. Shultz, and died in 1989.
Alderson Oil and Gas Field
Alderson Oil and Gas Field is an oil and gas field in southern Alberta, Canada, where a 1883 railway water-drilling crew accidentally discovered natural gas, possibly Canada's first.
Aleksandr Akimov (Александр Фёдорович Акимов)
Aleksandr Akimov (Александр Фёдорович Акимов) was a Soviet nuclear engineer who was shift chief of Chernobyl Unit 4 during the 1986 disaster and died of radiation sickness.
Alex Solar Complex
The Alex Solar Complex is a 278 MW photovoltaic power plant in Ceará, Brazil, the largest in the state when inaugurated by Elera Renováveis in 2021.
Alexander Apostolov (Александър Апостолов)
Alexander Apostolov (Александър Апостолов), born 1949 in Sofia, Bulgaria, is a Bulgarian-born American power systems engineer at OMICRON, elected to the US National Academy of Engineering in 2025 for leadership in digital protection and control.
Alexandre Edmond Becquerel
Alexandre Edmond Becquerel (1820–1891) was a French physicist who in 1839 discovered the photovoltaic effect, the basis of solar power, and made the first color photographs.
Alexandroupolis FSRU
The Alexandroupolis FSRU is a floating storage and regasification unit in the Thracian Sea off Alexandroupolis, Greece, which began commercial operation in October 2024 as the country's second LNG import terminal.
Alexandrovskoe-Anzhero-Sudzhensk Oil Pipeline
The Alexandrovskoe-Anzhero-Sudzhensk Oil Pipeline is an operating trunk crude oil pipeline in western Siberia, built from 1970 to 1972 as the first in world practice to use 1220 mm pipe.
ALFRED (reactor)
ALFRED, the Advanced Lead-cooled Fast Reactor European Demonstrator, is a planned 300 MWth lead-cooled fast reactor to be built at the RATEN ICN site in Mioveni, Romania.
Alfvén eigenmode control
Alfvén eigenmode control is the set of techniques used to reduce Alfvén eigenmodes, plasma waves in magnetic-confinement fusion devices that degrade fast-ion confinement and fusion gain.
Algenol
Algenol, later Algenol Biotech, was a Fort Myers, Florida biofuels company that developed a Direct to Ethanol process in which cyanobacteria in sealed saltwater photobioreactors produced ethanol without being harvested.
Algonquin Citygate
Algonquin Citygate is the natural gas pricing point for gas delivered off the Algonquin Gas Transmission pipeline to Boston utilities, and New England's principal wholesale gas benchmark.
Algonquin Power & Utilities
Algonquin Power & Utilities Corp. is a Canadian utility holding company, headquartered in Oakville, Ontario, that owns rate-regulated electric, gas, and water utilities serving about 1.3 million customers.
Alholmens Kraft power station
The Alholmens Kraft power station is a biomass-fired combined heat and power plant in Pietarsaari, Finland, whose AK2 unit is described as the world's largest biomass-fired power plant.
Aliağa LNG Terminal
The EgeGaz Aliağa LNG Terminal is an onshore LNG import and regasification terminal on Türkiye's Aegean coast at Aliağa, north of İzmir, operational since 2006.
Alif Oil Field
The Alif Oil Field is an onshore oil field in the Marib-Al Jawf Basin of Yemen, the country's first commercial oil discovery in 1984 and first producing field in 1986.
Alkaline battery
An alkaline battery is a non-rechargeable dry cell generating electricity from zinc oxidation and manganese dioxide reduction in a potassium hydroxide electrolyte, patented at Union Carbide in 1957.
Alkaline fuel cell
The alkaline fuel cell (AFC) is a fuel cell that converts hydrogen and oxygen into electricity using a potassium hydroxide electrolyte, and powered Apollo and Space Shuttle spacecraft.
Alkhobar power plant
The Alkhobar power plant is an oil-fired steam-turbine power and seawater desalination complex on Saudi Arabia's Gulf coast at Al-Khobar, Eastern Province, with a listed capacity of 818 MW.
All-inorganic perovskite solar cell
An all-inorganic perovskite solar cell is a photovoltaic device whose absorber is cesium lead halide such as CsPbI3, introduced in 2014 for better heat stability.
All-perovskite multi-junction solar cells
All-perovskite multi-junction solar cells are photovoltaic devices that stack perovskite absorbers with different bandgaps to split the solar spectrum, with two-terminal tandems reaching 30.1% efficiency.
All-perovskite tandem solar cell
An all-perovskite tandem solar cell is a photovoltaic device that stacks two perovskite absorbers of different bandgaps to beat single-junction efficiency limits, reaching a certified 30.1%.
Alliance Pipeline
The Alliance Pipeline is a high-pressure natural gas pipeline from Alberta and northeastern British Columbia to near Chicago, notable for carrying unprocessed, liquids-rich gas since 2000.
Alliance to Save Energy
The Alliance to Save Energy is a bipartisan, Washington, D.C.-based nonprofit coalition of business, government, environmental, and consumer leaders advocating federal energy efficiency policy since 1977.
Alliant Energy
Alliant Energy Corporation is a publicly traded utility holding company, listed on the Nasdaq as LNT, serving about 1 million electric and 435,000 gas customers in Iowa and Wisconsin.
Allkem
Allkem Limited was an Australian lithium mining and chemicals company formed in 2021 by the merger of Orocobre and Galaxy Resources, with assets in Argentina, Australia, and Japan.
Alloying anode
An alloying anode is a battery negative electrode of metals like silicon and tin that stores charge by forming alloys with lithium or sodium ions.
Almaraz nuclear power plant
The Almaraz nuclear power plant (Central Nuclear de Almaraz) is Spain's largest-capacity nuclear station, in Extremadura, operating since 1983 and supplying about 7 percent of Spanish electricity.