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.

The incumbent electricity retail company is EDF Energy.

[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.