901 articles
Kerala State Electricity Board
The Kerala State Electricity Board (KSEB) is the government-owned power utility of Kerala, India, established in 1957 and restructured as Kerala State Electricity Board Limited in 2014.
Kingsport Power
Kingsport Power is an American Electric Power subsidiary that buys and distributes electricity to about 49,000 customers in Kingsport, Tennessee, where it operates as AEP Appalachian Power.
Kontek
Kontek is a 600 MW high-voltage direct current submarine and underground interconnector linking eastern Denmark's grid on Zealand with Germany, in operation since 1995 between Bjæverskov and Bentwisch.
Korea District Heating
Korea District Heating Corporation (KDHC), founded in 1985, is a South Korean public corporation supplying district heating, cooling, and electricity, serving about 1.9 million apartment households and listed on KOSPI.
Kuwait Ministry of Electricity and Water
The Kuwait Ministry of Electricity and Water (وزارة الكهرباء والماء) is the government body solely responsible for generating and distributing electricity and water in Kuwait.
Kyrgyzenergo
Kyrgyzenergo was the state-owned, vertically integrated electricity and heat monopoly of Kyrgyzstan until its restructuring in the early 2000s, which created the National Electric Grid of Kyrgyzstan and four regional distribution companies.
Landis+Gyr
Landis+Gyr Group AG is a Swiss energy technology company headquartered in Cham, Zug, founded in 1896, providing smart metering and grid edge solutions to over 2,000 utilities.
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.
Lightning arrester
A lightning arrester, also called a lightning diverter or surge arrester, is a device connected between a power conductor and earth that limits overvoltages by diverting surge current to ground and then restoring its high resistance.
Line-commutated converter
A line-commutated converter (LCC) is a power-electronic converter that changes power between AC and DC using thyristor valves, the conventional technology dominating long-distance bulk HVDC transmission.
Linos J. Jacovides
Linos J. Jacovides is an electrical engineer who led General Motors' Electrovair electric-vehicle program, headed Delphi Research Labs, and was elected to the National Academy of Engineering in 2011.
List of major power outages
The list of major power outages, also known as the list of blackouts, covers large blackouts from the 1965 Northeast blackout to the 2012 India blackout.
Litgrid
Litgrid AB is the electricity transmission system operator of Lithuania, which led the Baltic synchronisation with the Continental European grid, switched in February 2025 and completed in November 2025.
Load break switch
A load break switch (LBS), also called a switch-disconnector, is a switching device that interrupts load current but not faults, so it is often paired with fuses.
Load shedding
Load shedding is the deliberate, preplanned dropping of electrical load in stages, triggered by falling frequency, to keep a power system stable and prevent a total blackout.
Lombard Squires
Lombard "Lom" Squires (c. 1906) was an American DuPont chemical engineer who, as chief supervisor at Hanford's 200 Area from June 1944, helped engineer the bismuth phosphate process separating plutonium from irradiated fuel.
Long Island Power Authority
The Long Island Power Authority (LIPA) is a not-for-profit public utility created by New York in 1986 that owns the electric grid serving Long Island and the Rockaway Peninsula.
Los Angeles Department of Water & Power
The Los Angeles Department of Water and Power is the municipal utility of Los Angeles and the largest municipal water and power utility in the United States.
Louisville Gas and Electric Company
Louisville Gas and Electric Company (LG&E) is a regulated electric and gas utility headquartered in Louisville, Kentucky, incorporated in 1913 and owned by PPL Corporation since 2010.
Low-voltage direct current
Low-voltage direct current distributes electrical power as direct current at low voltages, typically 48 to 800 volts, avoiding repeated AC-to-DC conversions in buildings, data centers, telecommunications, and microgrids.
Lower Colorado River Authority
The Lower Colorado River Authority (LCRA) is a publicly owned Texas utility created in 1934 to manage the lower Colorado River and generate electric power for Central Texas.
LS Power Development
LS Power Development is a New York-based, family and employee-owned company that develops, acquires, and operates North American power generation and high-voltage transmission since its 1990 founding.
LUMA Energy
LUMA Energy is a consortium of ATCO and Quanta Services that has operated Puerto Rico's power grid since 2021 under a 15-year contract with PREPA.
Maasvlakte converter station
The Maasvlakte converter station is the Dutch terminal of the BritNed interconnector at Rotterdam, converting power between the Dutch grid and the subsea link to Great Britain.
Madhya Pradesh Power Generating Company Limited
Madhya Pradesh Power Generating Company Limited (MPPGCL) is a wholly owned Government of Madhya Pradesh company generating electricity through thermal and hydel power stations, headquartered at Jabalpur.
Maharashtra State Electricity Board
The Maharashtra State Electricity Board (MSEB; Marathi: महाराष्ट्र राज्य विद्युत मंडळ) was the state electricity board of Maharashtra, India, formed in 1960 and unbundled into four successor companies in 2005.
Maharashtra State Electricity Distribution Company Limited (महावितरण)
Maharashtra State Electricity Distribution Company Limited (MSEDCL, महावितरण, Mahavitaran) is the state-owned electricity distribution utility of Maharashtra, India, incorporated in 2005 and serving more than 35 million consumers.
Mains electricity
Mains electricity, also called mains power or household power, is the general-purpose alternating-current supply delivered by public utility networks to buildings through wall outlets, as distinct from battery power.
Mains electricity by country
Mains electricity by country covers the domestic voltage, frequency, and plug standards each country uses, with most supplying 220 to 240 volts and about 15 plug types worldwide.
Making capacity
Making capacity is the rated peak current, including DC offset, that a circuit breaker can close onto during a short circuit, roughly 2.5 times its breaking current.