901 articles
Autotransformer
An autotransformer, also called an autoformer, is a transformer with a single winding per phase, part shared by primary and secondary, offering copper savings but no electrical isolation.
Avangrid
Avangrid is an American energy company, wholly owned by Spain's Iberdrola since 2024, running electric and gas utilities in New York and New England plus renewable generation.
AzerEnerji
AzerEnerji, formally Azerenergy OJSC, is Azerbaijan's state-owned electricity company and transmission system operator, producing about 90 percent of the country's power from plants it owns.
B.Grimm Power
B.Grimm Power is a Thailand-based energy company founded in 1993, the power generation arm of the B.Grimm group and one of Thailand's largest private power producers.
Back flashover
Back flashover is a flashover of a transmission line insulator from the tower side to the phase conductor, caused by a lightning stroke to the tower or shield wire raising the tower's potential.
Back-to-back converter
A back-to-back converter is an HVDC arrangement in which a rectifier and inverter share one station, connecting AC grids that are not synchronized, with no transmission line between them.
Bahman Hoveida
Bahman Hoveida is a power-systems engineer and entrepreneur who founded Open Systems International, a grid-control software supplier for electric utilities, acquired by Emerson Electric in 2021.
Baixas converter station
The Baixas converter station is an HVDC converter station near Perpignan, France, the French end of the underground France–Spain interconnection, built by INELFE and opened in 2015.
Ball and socket coupling
A ball and socket coupling is the standardized joint connecting string insulator units to each other and to fittings on high-voltage overhead power lines, standardized in IEC 60120.
Baltimore Gas and Electric
Baltimore Gas and Electric (BGE) is a regulated electric and gas utility based in Baltimore, Maryland, serving about 1.3 million electric customers as an Exelon subsidiary.
Bangalore Electricity Supply Company
Bangalore Electricity Supply Company Limited (BESCOM) is a wholly owned Government of Karnataka electricity distribution company serving Bengaluru and eight surrounding districts, formed in 2002.
Bangladesh Power Development Board
The Bangladesh Power Development Board (BPDB; Bengali: বাংলাদেশ বিদ্যুৎ উন্নয়ন বোর্ড) is Bangladesh's state-owned power utility, created in 1972 and now the country's single buyer of electricity.
Banpu Power
Banpu Power was a Thai power generating company, established in 1996 as a Banpu subsidiary, listed on the Stock Exchange of Thailand in 2016, and amalgamated with Banpu in 2026.
Basic insulation level
The basic insulation level (BIL), formally the basic lightning impulse insulation level, is the peak lightning impulse voltage that power equipment insulation must withstand without breakdown.
Basin Electric Power Cooperative
Basin Electric Power Cooperative is a not-for-profit electric generation and transmission cooperative based in Bismarck, North Dakota, founded in 1961 to supply wholesale power to rural cooperatives.
BC Hydro
BC Hydro, formally the British Columbia Hydro and Power Authority, is a provincial Crown corporation that generates and distributes electricity for most of British Columbia, serving over five million people.
Beijing Jingneng Power
Beijing Jingneng Power (京能电力) is a Chinese coal-fired power generation and heating company listed on the Shanghai Stock Exchange under code 600578, tracing to the century-old Shijingshan Power Plant.
Berkshire Hathaway Energy
Berkshire Hathaway Energy is an Iowa-based holding company, wholly owned by Berkshire Hathaway since 2024, whose subsidiaries run regulated electric and gas utilities and pipelines.
Berkshire Transformer Consultants
Berkshire Transformer Consultants was the worldwide transformer-consulting practice of William J. McNutt, a General Electric engineer and IEEE Life Fellow elected to the National Academy of Engineering in 2000.
Big Rivers Electric
Big Rivers Electric (BREC) is a member-owned, not-for-profit generation and transmission cooperative headquartered in Owensboro, Kentucky, wholesaling power to three member cooperatives serving over 120,000 customers across 22 western Kentucky counties.
Black start
Black start is the procedure for restoring a power grid after a total or partial blackout, using generators that start without external power, energize transmission lines, and restart larger plants.
Bonneville Power Administration
The Bonneville Power Administration is a nonprofit federal power marketing administration in the Department of Energy, created in 1937 to market power from Bonneville Dam in the Pacific Northwest.
Booster transformer
A booster transformer, also called a buck-and-boost transformer, is a transformer whose secondary is connected in series with a power line to boost or buck the voltage.
Breaker failure protection
Breaker failure protection, designated ANSI/IEEE device 50BF, detects when a circuit breaker fails to interrupt fault current after a trip command and then trips adjacent breakers to isolate the fault.
BritNed
BritNed is a 1,000 MW high-voltage direct current electricity interconnector between the Isle of Grain in Kent, Great Britain, and Maasvlakte in Rotterdam, the Netherlands, in operation since 2011.
Brownout (electricity)
A brownout is a sustained drop in supply voltage below its normal level without a full outage, named for dimmed lights, caused by grid stress or deliberate utility reductions to prevent blackout.
BS 1363
BS 1363, defining the type G plug, is the British Standard for the UK's 13 A fused plug and shuttered socket-outlet system, introduced in 1947 and used in Britain, Ireland, Hong Kong, Malaysia, and Singapore.
Buckeye Power
Buckeye Power, Inc. is Ohio's not-for-profit generation and transmission electric cooperative, formed in 1959 and owned by the member cooperatives it supplies, serving nearly 400,000 homes and businesses, chiefly through the coal-fired Cardinal Power Plant.
Bundesnetzagentur
The Bundesnetzagentur, abbreviated BNetzA, is Germany's federal regulatory authority for electricity, gas, telecommunications, post, and railways. It is headquartered in Bonn and was created in 1998.
Bundled conductors
Bundled conductors are phases of overhead transmission lines made of several subconductors spaced apart and acting as one, common on extra-high-voltage lines to reduce corona, power loss, and audible noise.