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Large Helical Device
The Large Helical Device (LHD; 大型ヘリカル装置) was a superconducting stellarator fusion experiment in Toki, Japan, operating from 1998 to 2025 and achieving plasma temperatures of 120 million degrees.
Large Scale Solar 5 (Malaysia)
Large Scale Solar 5 (LSS5), formally LSS PETRA, is the fifth competitive bidding round for utility-scale solar plants in Peninsular Malaysia, launched in 2024 with a 2,000 MW quota.
Large Scale Solar 6 (Malaysia)
Large Scale Solar 6 (LSS6) is Malaysia's sixth competitive solar bidding round, announced in 2026, offering 2,650 MW of solar capacity, half paired with battery storage.
Las Pailas Geothermal Power Station
Las Pailas Geothermal Power Station (Complejo Geotérmico Las Pailas) is a geothermal power complex on Rincón de la Vieja volcano in Guanacaste, Costa Rica, owned by ICE.
LaSalle nuclear power plant
The LaSalle nuclear power plant in Brookfield Township, LaSalle County, Illinois, is a two-unit boiling water reactor station generating up to 2,320 MW, operated by Constellation Energy.
Laser doping
Laser doping is a semiconductor fabrication technique in which a pulsed laser locally melts silicon so dopants diffuse in, chiefly forming selective emitters under metal contacts in solar cells.
Laser enrichment
Laser enrichment is a family of uranium isotope separation methods using tunable lasers to selectively excite uranium-235 atoms or molecules, with AVLIS, MLIS, and SILEX the main approaches.
Laser ignition
Laser ignition is a combustion-ignition method in which a focused pulsed laser beam creates a plasma spark in a fuel–air mixture, replacing the spark plug in engines and combustors.
Laser Mégajoule
Laser Mégajoule (LMJ) is France's large inertial confinement fusion laser facility at CEA Cesta near Bordeaux, inaugurated in 2014 to help certify the nuclear deterrent without underground testing.
Lashburn East Waseca Oil Pool
The Lashburn East Waseca Sand Pool is a designated heavy oil pool near Lashburn and Waseca, Saskatchewan, producing from the Waseca Formation and developed with steam injection since 2014.
LATP (solid electrolyte)
LATP, short for lithium aluminum titanium phosphate, is a NASICON-type ceramic solid electrolyte for lithium batteries, prized for its conductivity, air stability, and low cost.
Latrobe Valley
The Latrobe Valley is a brown coal region in Gippsland, eastern Victoria, Australia, whose open-cut mines and power stations have supplied most of the state's electricity for roughly a century.
Lattice physics calculation
A lattice physics calculation is a neutron transport and fuel depletion computation on a 2D fuel assembly slice, producing few-group cross sections for full-core reactor simulation.
Lattice tower
A lattice tower is a tall, free-standing steel truss framework used chiefly to support overhead power lines and telecommunications antennas, its open lattice letting wind pass through.
Laúca hydroelectric plant
The Laúca hydroelectric plant is a 2,070 MW hydropower complex on the Kwanza River in Angola, the country's largest, supplying about 40 percent of its electricity.
Lauderdale power station
Lauderdale power station is a Florida Power & Light generating site in Fort Lauderdale, Florida, hosting FPL's first plant since 1927 and the Dania Beach Clean Energy Center.
Lawe-Lawe Oil Pipeline
The Lawe-Lawe oil pipeline is a crude oil pipeline and terminal system at Lawe-Lawe, East Kalimantan, Indonesia, supplying the Balikpapan Refinery as part of Pertamina's refinery expansion.
Lawrence B. Curtis
Lawrence B. "Buck" Curtis was an American petroleum engineer at Conoco, widely credited as the father of the tension-leg platform and elected to the National Academy of Engineering in 1988.
Lawrenceburg power station
The Lawrenceburg power station is a 1,232 MW natural gas-fired combined cycle power plant in Lawrenceburg, Indiana, on the Ohio River, operating since 2004 and selling into the PJM wholesale market.
Laxiwa hydroelectric plant
Laxiwa hydroelectric plant (拉西瓦水电站) is a 4,200 MW hydroelectric station on the Yellow River in Qinghai Province, China, first generating power in 2009 behind a 250 m arch dam.
Layang Oil and Gas Field
The Layang Oil and Gas Field is an operating oil and gas field in Block SK10, offshore Sarawak, Malaysia, producing natural gas since 2017 and crude oil since 2019.
Layered double hydroxide electrocatalysts
Layered double hydroxide electrocatalysts are catalysts made from layered double hydroxides, two-dimensional anionic clays, used in water splitting, especially the oxygen evolution reaction for hydrogen production.
Layyah power station
Layyah power station, also written Al Layyah power plant (محطة كهرباء اللية), is a gas-fired power and water desalination station in Sharjah, UAE, owned by SEWA.
Le Havre FSRU
The Le Havre FSRU was France's first floating LNG import terminal, a moored ship injecting gas into the French grid from late 2023 to January 2026.
Lead telluride thermoelectrics
Lead telluride thermoelectrics are materials based on PbTe, a narrow-bandgap semiconductor that converts heat to electricity, used in spacecraft generators since the early space program.
Lead-carbon battery
A lead-carbon battery (LCB) is a lead-acid battery with carbon materials added to the negative electrode, retarding sulfation and extending cycle life in hybrid vehicles and renewable energy storage.
Lead-cooled fast reactor
A lead-cooled fast reactor is a nuclear fission reactor cooled by molten lead or lead-bismuth eutectic in a fast neutron spectrum, one of six Generation IV systems.
Lead-free perovskite solar cell
A lead-free perovskite solar cell is a photovoltaic device using tin, germanium, bismuth, or antimony instead of toxic lead, with tin cells reaching about 18% efficiency.
Lead-free tin halide perovskite solar cells
Lead-free tin halide perovskite solar cells replace lead with tin in the perovskite absorber, reaching efficiencies approaching 18% since the first cell was demonstrated in 2014.
Lead-tin halide perovskite
A lead-tin halide perovskite is a mixed-cation perovskite semiconductor with a narrow bandgap around 1.2 to 1.3 eV, used as the bottom absorber in all-perovskite tandem solar cells.