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Market shares of Big Six domestic electricity suppliers in Great Britain 2010-2021

Domestic electricity supply market shares of the Big Six energy companies in Great Britain from Q1 2010 to Q2 2021

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Release date

October 2021


United Kingdom (Great Britain)

Survey time period

Q1 2010 to Q2 2021

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 2021 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.

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Statistics on "ScottishPower"

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