Big Six in the UK

Statistics report on the largest energy providers in the United Kingdom (UK)

Big Six in the UK

This report provides a range of statistics and information related to the activities of the Big Five (formerly Big Six) energy suppliers in the United Kingdom (UK), namely British Gas, EDF Energy, E.ON, Scottish Power, and SSE. The group supplies energy services to the majority of the market in the UK.
The term Big Six was regularly used until 2019. When E.ON acquired npower, the group has officially become a Big Five. In addition, SSE's retail business went to OVO Energy. However, for now, the reference to Big Six has been maintained here.

Table of contents

Overview

4
  • Premium Statistic Electricity production in the United Kingdom 2010-2021, by source
  • Premium Statistic Electricity capacity outlook in the United Kingdom 2021-2040, by source
  • Premium Statistic Market share of Big Six domestic electricity suppliers in GB Q1 2010-Q3 2023
  • Premium Statistic Complaints received by main energy firms in Great Britain Q1 2013-Q1 2023

Key figures

5
  • Premium Statistic Aggregate profits of large energy firms in Great Britain 2009-2020
  • Premium Statistic Energy generation profits in Great Britain 2021, by supplier
  • Premium Statistic Domestic supply profits of Big Six companies in Great Britain 2021
  • Premium Statistic Non-domestic energy supply profits in Great Britain 2021, by supplier
  • Premium Statistic Profit margin of large energy suppliers in Great Britain 2009-2020

Revenue

6
  • Premium Statistic Centrica's revenue 2007-2022
  • Basic Statistic ScottishPower's revenue 2012-2022
  • Premium Statistic Revenue of E.ON in the United Kingdom 2010-2020
  • Premium Statistic EDF Energy's revenue in the UK 2010-2022, by energy segment
  • Premium Statistic Annual revenue of SSE in the UK 2010-2023
  • Premium Statistic OVO Energy's revenue in the United Kingdom 2013-2022

Domestic supply profits

4
  • Premium Statistic Domestic energy supply profits of British Gas in Great Britain 2009-2021
  • Premium Statistic Domestic energy supply profits of ScottishPower in Great Britain 2010-2021
  • Premium Statistic Domestic energy supply profits of E.ON in Great Britain 2009-2020
  • Premium Statistic Domestic energy supply profits of EDF Energy in Great Britain 2009-2021

Energy generation profits

5
  • Premium Statistic British Gas' energy generation profits in Great Britain 2009-2021
  • Premium Statistic Energy generation profits of ScottishPower in Great Britain 2010-2021
  • Premium Statistic Energy generation profits of E.ON in Great Britain 2009-2020
  • Premium Statistic EDF Energy's energy generation profits in Great Britain 2009-2021
  • Basic Statistic Energy generation profits of SSE in Great Britain 2009-2021

Employment

4
  • Premium Statistic Centrica's employees 2022, by segment
  • Premium Statistic ScottishPower's employment figures 2013-2022
  • Premium Statistic E.ON's employment figures 2021-2022, by country
  • Premium Statistic SSE: employment figures 2011-2023

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