Market share of Big Six domestic electricity suppliers in GB Q1 2010-Q1 2023

Domestic electricity supply market shares of the Big Six energy companies in Great Britain from 1st quarter 2010 to 1st quarter 2023

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Release date

July 2023


United Kingdom (Great Britain)

Survey time period

Q1 2010 to Q1 2023

Supplementary notes

* OVO Energy acquired the retail business segment of SSE in January 2020 and has been a Big Six energy supplier since. The source no longer lists SSE market shares as a result.
** Npower was acquired by E.ON UK in 2019, and as of 2022 operates under the E.ON name.

According to the source, market shares are determined by the share of meter points on the electricity distribution networks, and are provided by electricity distribution network operators.

Figures have been rounded.

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