Big Six in the UK

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Statista dossier on the Big Six energy suppliers in the United Kingdom (UK)

This dossier provides a range of statistics and information related to the activities of the so-called 'Big Six' energy suppliers in the United Kingdom (UK). British Gas, EDF Energy, E.ON, npower, Scottish Power, and SSE make up the Big Six, supplying energy services to the considerable majority of the market in the UK.

Table of contents

  • 1. Overview
    • Electricity production volume in the United Kingdom (UK) 2015-2019, by source

    • Fuels used in the generation of electricity in the United Kingdom (UK) 1998-2019

    • Electricity generating capacities installed in the United Kingdom (UK) 2017-2018

    • Total electricity generation capacity in the United Kingdom (UK) 2018-2035, by source

  • 2. Financials
    • Aggregate profits of the Big Six in the United Kingdom (UK) 2009-2018

    • Most profitable Big Six company by energy generation in the UK 2018

    • Most profitable Big Six company by non-domestic supply in the UK 2018

    • Most profitable Big Six by domestic supply in the UK 2018

    • Big six profit margin for supply in the United Kingdom (UK) 2009-2018

  • 3. Non-domestic energy supply profits
    • British Gas non-domestic energy supply profits in the United Kingdom (UK) 2009-2018

    • Non-domestic energy supply profits of E.ON 2009-2018

    • Non-domestic energy supply profits of EDF Energy 2009-2018

    • Non-domestic energy supply profits of RWE npower 2009-2018

    • Non-domestic energy supply profits of ScottishPower 2009-2018

    • Non-domestic energy supply profits of SSE in the United Kingdom 2009-2018

  • 4. Domestic energy supply profits
    • Domestic energy supply profits of British Gas in the United Kingdom (UK) 2009-2018

    • Domestic energy supply profits of E.ON in the United Kingdom (UK) 2009-2018

    • Domestic energy supply profits of EDF Energy in the United Kingdom (UK) 2009-2018

    • Domestic energy supply profits of RWE npower in the United Kingdom (UK) 2009-2018

    • Domestic energy supply profits of ScottishPower in the UK 2009-2018

    • Domestic energy supply profits of SSE in the United Kingdom (UK) 2009-2018

  • 5. Energy generation profits
    • Energy generation profits of British Gas in the United Kingdom (UK) 2009-2018

    • Energy generation profits of E.ON in the United Kingdom (UK) 2009-2018

    • Energy generation profits of EDF Energy in the United Kingdom (UK) 2009-2018

    • Energy generation profits of RWE npower in the United Kingdom (UK) 2009-2018

    • Energy generation profits of ScottishPower 2009-2018

    • Energy generation profits of SSE in the United Kingdom (UK) 2009-2018

  • 6. Complaint data
    • Complaints received by 'Big Six' UK energy suppliers per 100,000 customers 2013-2019

    • Complaints resolved by 'Big Six' UK energy companies by end of work day 2019

    • Complaints resolved within eight weeks by the 'Big Six' UK energy companies 2019

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