901 articles
National Grid Electricity Distribution
National Grid Electricity Distribution (NGED) is the regional electricity distribution arm of National Grid plc and the largest electricity distribution network operator in the United Kingdom.
National Grid Electricity Transmission
National Grid Electricity Transmission (NGET) is a subsidiary of the National Grid group that owns and maintains the high-voltage electricity transmission network in England and Wales.
Naturgy
Naturgy, formerly Gas Natural Fenosa, is a Spanish utility supplying gas and electricity in Spain and Latin America, tracing its origins to 1843 in Barcelona.
Nebraska Public Power District
Nebraska Public Power District is a publicly owned, not-for-profit electric utility headquartered in Columbus, Nebraska, serving about 530,000 people across 84 of the state's 93 counties.
Negative-sequence current
Negative-sequence current is the symmetrical component, from Fortescue's 1918 method, that appears when three-phase currents or voltages are unbalanced, producing counter-rotating fields, rotor heating, and vibration in machines.
NEMA connector
A NEMA connector, or NEMA plug, is a North American plug or receptacle built to standards set by the National Electrical Manufacturers Association, with over 70 defined types.
Neoenergia
Neoenergia S.A. is a Brazilian integrated electricity company controlled by Spain's Iberdrola, founded in 1997 and the largest power distributor in Brazil, serving more than 40 million people.
Net load
Net load, also called net demand or residual load, is total electricity demand minus wind and solar output, and its volatility shapes how much flexibility a grid needs.
Net metering
Net metering, also called net energy metering, is a utility billing program that lets rooftop solar owners offset billed electricity with power they export to the grid.
Network Development Plan (Germany)
The Network Development Plan (Netzentwicklungsplan, NEP) is Germany's central plan for expanding its electricity transmission grid, drafted by the transmission system operators and confirmed by the Federal Network Agency.
Neutral-point-clamped converter
A neutral-point-clamped (NPC) converter is a multilevel power converter topology, introduced in 1981 by Nabae, Takahashi, and Akagi, that produces three voltage levels per phase and is widely used in medium-voltage drives.
New Brunswick Power Holding
New Brunswick Power Holding Corporation, known commercially as NB Power, is the New Brunswick Crown corporation and vertically integrated electric utility serving more than 350,000 customers.
New York City blackout of 1977
The New York City blackout of 1977 was a 25-hour power outage on July 13 and 14, 1977, that plunged the city into darkness and widespread looting.
New York Independent System Operator
The New York Independent System Operator (NYISO) is a not-for-profit corporation that has operated New York State's bulk power grid and wholesale energy markets since December 1999.
New York Power Authority
The New York Power Authority (NYPA) is the largest state public power organization in the United States, created in 1931 and selling electricity mostly at wholesale.
New-type power system
A new-type power system (新型电力系统) is the electricity system model China set out to build so its grid can run securely with high shares of wind and solar power.
Newfoundland Power
Newfoundland Power is the regulated electric utility distributing electricity on the island portion of Newfoundland and Labrador, serving over 276,000 customers and owned by Fortis Inc.
Nexans
Nexans is a French multinational manufacturer of cable systems for power transmission and distribution, operating in 39 countries with €6.1 billion in sales in 2025.
Niagara Mohawk (NIMO)
Niagara Mohawk (NIMO) is Niagara Mohawk Power Corporation, a regulated electric utility in upstate New York with about 3.2 million customers, owned by National Grid since 2002.
Niger Delta Power Holding
Niger Delta Power Holding Company is a Nigerian power company owned by the federal, state, and local governments, incorporated in 2005 to build the National Integrated Power Project.
Nikola Tesla (Никола Тесла)
Nikola Tesla (Никола Тесла), also known as Nicholas Tesla, was a Serbian American inventor and electrical engineer whose patents established the polyphase alternating current system used worldwide.
NIPSCO
NIPSCO, or Northern Indiana Public Service Company, is a regulated utility headquartered in Merrillville, Indiana, serving about 900,000 gas and 500,000 electric customers across northern Indiana.
NiSource Inc.
NiSource Inc. is an American energy holding company headquartered in Merrillville, Indiana, whose regulated natural gas and electric utilities, including NIPSCO, serve about 3.7 million customers in six states.
Non-intrusive load monitoring
Non-intrusive load monitoring, also called energy disaggregation, estimates the power consumed by individual appliances from a single metering point, avoiding the wiring and submeters intrusive monitoring requires.
Nord Pool
Nord Pool is a European power exchange headquartered at Lysaker, Norway, that operates day-ahead and intraday wholesale electricity markets in 15 countries, describing itself as the world's first power exchange and majority owned by Euronext.
NordBalt
NordBalt is a 700 MW high-voltage direct current submarine electricity interconnector linking Klaipėda in Lithuania and Nybro in Sweden, owned by Litgrid and Svenska kraftnät and in service since 2016.
North American Electric Reliability Corporation
The North American Electric Reliability Corporation (NERC) sets and enforces mandatory reliability standards for the North American bulk power grid, which serves nearly 400 million people.
North Sea Link
North Sea Link is a 1,400 MW submarine electricity interconnector running 720 km between Kvilldal in Norway and Blyth in England, at completion the world's longest subsea power cable.
North-West Power Generation
North-West Power Generation Company Limited (NWPGCL) is a state-owned electricity generation company in Bangladesh, wholly owned by the Bangladesh Power Development Board and incorporated in 2007.
Northeast blackout of 1965
The Northeast blackout of 1965 was a cascading power failure that began in Ontario on November 9 and left about 30 million people without power for up to 13 hours.