901 articles
Essential Utilities
Essential Utilities, Inc. (NYSE: WTRG) is a Pennsylvania holding company providing regulated water, wastewater, and natural gas services to about 5.5 million people in nine states.
Ethiopian Electric Utility
Ethiopian Electric Utility (EEU; Amharic: የኢትዮጵያ ኤሌክትሪክ አገልግሎት) is Ethiopia's fully government-owned power distributor, created in 2013 when the state utility was split in two.
Eugene C. Sakshaug
Eugene C. Sakshaug (1923–2016) was an American electrical engineer who spent 32 years at General Electric developing surge arresters, and was elected to the National Academy of Engineering in 1986.
EuroAsia Interconnector
The EuroAsia Interconnector, renamed Great Sea Interconnector in 2023, is a planned HVDC submarine cable linking the power grids of Israel, Cyprus, and Greece through Crete.
Evergy
Evergy, Inc. is a regulated electric utility holding company serving about 1.7 million customers in Kansas and Missouri, formed in 2018 by the merger of Great Plains Energy and Westar Energy.
EWE (utility)
EWE AG is a German energy and telecommunications company headquartered in Oldenburg, Lower Saxony, serving northwestern Germany, Brandenburg, and Rügen with electricity, natural gas, and telecom services.
Exelon
Exelon Corporation is a Chicago-based American utility holding company formed in 2000, serving more than 10.7 million electric and gas customers through six regulated utilities.
F. Don Tan
F. Don Tan is a power electronics and energy systems engineer, elected to the National Academy of Engineering in 2025, who led space power conversion at Northrop Grumman.
Fast Load Control
Fast Load Control is a Massachusetts corporation in Providence, Rhode Island, holding inventor Robert H. Park's fast-valving patents, filed between 1972 and 1977, for turbine stability.
Fault current limiter
A fault current limiter (FCL) is an electrical device that stays invisible during normal operation and rapidly limits the surge of current during a short-circuit fault.
Fault level
Fault level is the prospective current that would flow into a short circuit at a point in a power system, expressed in kiloamperes or megavolt-amperes.
Fault passage indicator
A fault passage indicator (FPI), also called a faulted circuit indicator, is a device on medium-voltage distribution lines that detects fault current, helping crews localize the faulted section.
Federal National Grid Company
Federal National Grid Company is not identified as an entity in the sources; the documented restructuring is Nigeria's 2024 unbundling of the Transmission Company of Nigeria into NISO and a transmission provider.
Feeder terminal unit
A feeder terminal unit (FTU), in Chinese practice 馈线终端, is a remote terminal unit on distribution feeders that measures electrical conditions and switch status for a central control system.
FERC Order 2222
FERC Order 2222 is a 2020 Federal Energy Regulatory Commission rule requiring regional grid operators to open wholesale markets to aggregations of distributed energy resources such as batteries and solar.
Fingrid
Fingrid is Finland's state-majority-owned transmission system operator, founded in 1996, which operates the roughly 14,900-kilometer high-voltage main grid, maintains power system balance, and participates in ENTSO-E.
Flexible AC transmission system
A flexible AC transmission system (FACTS) is an AC transmission system with power electronic-based static controllers that enhance controllability and increase power transfer capability, a definition given by the IEEE.
FLISR
FLISR, or fault location, isolation, and service restoration, is a distribution automation function in which electric utilities automatically locate feeder faults, isolate the faulted section, and restore power to unfaulted sections within about a minute.
Fluvius
Fluvius, the operating name of Fluvius System Operator cvba, is the Belgian multi-utility network company that manages electricity, gas, and heat distribution in all 300 Flemish municipalities.
FortisAlberta
FortisAlberta is a regulated electricity distribution utility in Alberta, Canada, that owns the power lines serving more than 600,000 customers. It has been a subsidiary of Fortis Inc. since 2004.
FortisBC
FortisBC is the brand under which two regulated utilities deliver electricity and natural gas in British Columbia, serving more than 1.3 million customers as a subsidiary of Fortis Inc.
FortisOntario
FortisOntario is a Canadian electric utility headquartered in Fort Erie, Ontario, serving about 70,300 customers through three regulated utilities, as a subsidiary of Fortis Inc.
Frederick J. Ellert
Frederick J. Ellert was an American electrical engineer at General Electric who led the development of high-voltage direct current transmission and was elected to the National Academy of Engineering in 1987.
Frequency stability
Frequency stability is a power system's ability to maintain steady frequency after a severe generation-load imbalance, like losing a large generator, and restore it to nominal value.
Fulong converter station
Fulong converter station (复龙换流站), located at Fulong in Sichuan Province, China, is the sending-end (rectifier) station of the Xiangjiaba–Shanghai ±800 kV UHVDC link, commissioned in 2010.
Furnace transformer
A furnace transformer is a special-purpose power transformer delivering very high current at low secondary voltage to industrial melting furnaces, most commonly electric arc furnaces.
g³ (gas mixture)
g³, pronounced g-cubed, is a dielectric and arc-quenching gas mixture of carbon dioxide, oxygen, and fluoronitrile developed by GE Vernova and 3M to replace SF₆.
Gas-insulated line
A gas-insulated line (GIL) is a high-voltage power transmission system in which a conductor inside a compressed insulating gas carries large amounts of power underground or through tunnels.
General Electricity Company of Libya
The General Electricity Company of Libya (الشركة العامة للكهرباء, GECOL) is Libya's state-owned utility, created in 1984 to run electricity generation, transmission, distribution, and water desalination.
Generator circuit breaker
A generator circuit breaker (GCB) is a switching device between a power plant generator and its step-up transformer, rated above 1 kV and designed to interrupt very large, heavily asymmetrical fault currents.