901 articles
Supergrid
A supergrid is a long-distance electricity transmission network, mainly high-voltage direct current lines at 500 kV or more, connecting remote renewable generation to demand centers and interconnecting national grids.
Sushil K. Soonee
Sushil K. Soonee is an Indian power system engineer and founding CEO of POSOCO, now Grid India, credited with unifying India's regional grids into a National Grid by 2013.
Svenska kraftnät
Svenska kraftnät is the Swedish state authority and transmission system operator that owns and runs the national electricity grid and balances power supply, established in 1992.
Switchgear
Switchgear is the combination of disconnect switches, circuit breakers, fuses, and protective relays used to control, protect, and isolate electrical power circuits, often in substations.
Sylmar Converter Station
The Sylmar Converter Station is the southern terminal of the Pacific DC Intertie, an 846-mile HVDC link from Oregon, operated by LADWP in Sylmar, Los Angeles, since 1970.
Symmetrical components
Symmetrical components decompose unbalanced three-phase voltage or current phasors into positive-, negative-, and zero-sequence sets, a method presented by C. L. Fortescue in 1918 for unbalanced fault analysis.
Synchronized switching
Synchronized switching, also called controlled switching or point-on-wave switching, times a circuit breaker's poles to close or open at targeted phase angles, minimizing switching transients on the power grid.
Synchronous condenser
A synchronous condenser is a synchronous electrical machine with no prime mover that injects or absorbs reactive power and adds inertia to the power grid.
Synchrophasor measurement
Synchrophasor measurement is a power-system monitoring technique in which phasor measurement units estimate voltage and current magnitude and phase angle, synchronized to UTC, enabling direct comparison across substations.
T Plus (energy company)
T Plus, known as KES Holding until June 2015, is a Russian heat and electricity generating company built from Viktor Vekselberg's Renova assets and the country's largest centralized heat producer.
T. Louis Austin Jr.
T. Louis Austin Jr. was an American utility executive who led Texas Utilities Company and later served as president and CEO of Brown & Root from 1983 to 1990.
Taipower
Taipower (台湾电力公司), formally the Taiwan Power Company, is the state-owned integrated electric utility of Taiwan, founded in 1946 and headquartered in Taipei, responsible for power generation, transmission, distribution, and sales.
Taiwan Cogeneration
Taiwan Cogeneration Corporation (TCC; 台湾汽电共生) is a Taiwanese company that builds and operates cogeneration and gas-fired power plants, founded in 1992 by Taiwan Power Company.
Talcher converter station
The Talcher converter station in Odisha, India, is the eastern terminal of the Talcher–Kolar HVDC bipole, a ±500 kV, 2,000 MW link commissioned in 2003 and operated by POWERGRID.
Talen Energy
Talen Energy is an American independent power producer headquartered in Houston, Texas, that sells electricity into wholesale markets and is majority owner of the Susquehanna nuclear plant.
Tamil Nadu Electricity Board
The Tamil Nadu Electricity Board (TNEB) was the state-owned electricity utility of Tamil Nadu, India, formed in 1957 and known for achieving 100 percent village electrification.
Tamil Nadu Power Distribution
Tamil Nadu Power Distribution is the state-owned electricity distribution utility of Tamil Nadu, India, operated by TNPDCL, renamed from TANGEDCO on 27 June 2024 after the board's trifurcation.
Tampa Electric
Tampa Electric, commonly TECO, is an electric utility serving about 860,000 customers in West Central Florida; founded in 1899, it is a subsidiary of Canada's Emera Inc.
TANESCO
TANESCO, the Tanzania Electric Supply Company, is Tanzania's state-owned, vertically integrated electricity utility. Formed in 1964, it generates, transmits, and distributes power on the mainland and supplies bulk power to Zanzibar.
Tap changer
A tap changer is a transformer switching device that changes winding turns to regulate output voltage; on-load tap changers switch while energized, de-energized ones only when out of service.
TAQA Morocco
TAQA Morocco, formerly Jorf Lasfar Energy Company, is a Moroccan power producer operating the 2,056 MW Jorf Lasfar coal-fired plant, the largest in the MENA region.
Tata Power
Tata Power, formally The Tata Power Company Limited, is India's largest integrated private power utility, serving over 13 million customers and targeting net zero by 2045.
TAURON
TAURON, formally TAURON Polska Energia S.A., is a Polish state-controlled energy holding company headquartered in Katowice and listed on the Warsaw Stock Exchange since 2010. It leads Poland in distribution customers.
TCC Group Holdings
TCC Group Holdings, formerly Taiwan Cement Corporation and written 台泥集团 in Chinese, is a Taiwanese holding company in cement, renewable energy, storage, batteries, and EV charging.
Tenaska
Tenaska is a privately held American energy company headquartered in Omaha, Nebraska. Founded in 1987, it develops and operates power plants and markets natural gas and electricity nationwide.
TenneT
TenneT is a Dutch state-owned electricity transmission system operator that runs the national high-voltage grid of the Netherlands and one of four control zones in Germany.
Termoelectrica
Termoelectrica was the Romanian state-owned company for thermal electricity and heat generation, created in 2000 by splitting the national company CONEL; its viable assets became Electrocentrale Grup before its dissolution in 2013.
Testing transformer
A testing transformer is a specially designed step-up transformer that generates high alternating test voltages for dielectric testing of electrical equipment such as cables, switchgear, bushings, and insulators.
Texas Interconnection
The Texas Interconnection is one of the three major US power grids, covering most of Texas and run by ERCOT, which serves over 27 million customers almost independently.
TGK-1
TGK-1, or Territorial Generating Company No. 1, is a Russian power and heat generating company created in 2005, the largest electricity producer in Russia's Northwestern Federal District.