Twelve Regional Electricity Companies (RECs) were formed on March 31, 1990 as part of the restructuring of the electricity system in England and Wales. March 31 is the 90th day of the year in the Gregorian Calendar (91st in Leap years), with 275 days remaining. ... This article is about the year. ...

Prior to this date the Central Electricity Generating Board was responsible for the generation and transmission of electricity, while 12 Area Electricity Boards were responsible for distribution and supply to consumers. The Central Electricity Generating Board (CEGB) was the cornerstone of the British electricity industry for almost 50 years, from its nationalisation in 1947 to privatisation in the 1990s. ...

On March 31 the AEBs were changed to independent RECs. The CEGB was split into four companies, three generation companies and National Grid Company, operator of the National Grid. The National Grid Company was placed under the ownership of the RECs. On December 11 1990 the RECs were privatised. For the mapping grid, see the British national grid reference system. ... The National Grid is the high-voltage electric power transmission network in Great Britain, connecting power stations and major substations and ensuring that electricity generated anywhere in Great Britain can be used to satisfy demand elsewhere. ...

RECs

East Midlands Electricity

Formerly (pre-privatisation) East Midlands Electricity Board. Acquired by Powergen in 1998. Rebranded with MEB as Central Networks in April 2004.

Eastern Electricity

Acquired by Hanson plc in 1995. Demerged from Hanson as part of The Energy Group plc. Hanson plc is a British based international building materials company, headquartered in London. ... The Energy Group plc, a defunct British power generator and distributor, was originally a subsidiary of Hanson plc until its demerger in 1996. ...

London Electricity

Formerly London Electricity Board. Acquired by US based Entergy in 1996 for £1.3bn ($2.1bn). Acquired by EDF International in 1998, who merged it with SEEBOARD to form EDF Energy. Entergy Corporation (NYSE: ETR), based in New Orleans, Louisiana, is a Delaware chartered corporation engaged in electric power production, retail distribution operations, energy marketing and trading, and gas transportation. ... Électricité de France (EDF) is the main electricity generation and distribution company in France. ... EDF Energy logo EDF Energy is an energy company that provides gas and electricity to homes throughout the United Kingdom. ...

MANWEB

Formerly Merseyside and North Wales Electricity Board. Manweb plc was acquired by Scottish Power in 1995, now SP Manweb plc. ScottishPower Plc is an energy company headquartered in Glasgow, Scotland. ...

MEB

Formerly Midland Electricity Board. MEB or Midlands Electricity was subject of a takeover bid by Powergen in 1996, however this was blocked. The company eventually did acquire the company in January 2004. In April 2004 MEB and East Midlands Electricity rebranded as Central Networks.

Northern Electric

Formerly North Eastern Electricity Board. Today operated by CE Electric UK, a subsidiary of MidAmerican Energy Holdings Company. MidAmerican Energy Holdings Company is a holding company controlled by Berkshire Hathaway. ...

NORWEB

Formerly North Western Electricity Board.

SEEBOARD

Formerly South Eastern Electricity Board.

South Wales Electricity

Formerly South Wales Electricity Board. SWALEC

South Western Electricity

Formerly South Western Electricity Board, SWEB was acquired by London Electricity (owned by EDF) in 1999.

Southern Electric

Formerly Southern Electricity Board. SE

Yorkshire Electricity

Formerly Yorkshire Electricity Board.