SWEB Energy, formerly South Western Electricity Board (SWEB) was a British state-owned regional electricity company operating in South West England which was privatised by the Thatcher government.

[2] The total number of customers supplied by the board over its operational life was:[3][4]

[5] In 1995, SWEB Energy was bought by the American utility Southern Company.

Western Power itself (officially known as WPD South West) dealt with the local distribution, metering and substations, and the 'SWEB' brand name was continued as a retail energy utility.

In June 1999, SWEB was sold to French-owned EDF Energy.