Electricity supply market shares by company: Domestic (GB)


Javascript is required to render chart Electricity supply market shares by company: Domestic (GB) .

Source: Ofgem analysis of electricity distribution network operator reports .

Information correct as of: December 2016

This chart shows the domestic electricity market shares for each of the six large suppliers, six medium sized suppliers and other suppliers (presented in aggregate as ‘others’).

Chart tip: To look at a specific data series or to switch a series view on and off, click on a title in the chart legend (e.g. British Gas).

Policy Areas:

  • Electricity - retail markets

Data Table

Electricity supply market shares by company: Domestic (GB)
British GasEDFE.ONRWE npowerScottish PowerSSECo-operative EnergyExtra EnergyFirst UtilityOVOUtilitaUtility WarehouseOthers
Q1 200424%14%21%15%11%14%1%
Q2 200424%14%21%15%12%15%0%
Q3 200424%14%21%15%12%15%0%
Q4 200423%13%21%15%13%15%0%
Q1 200522%13%21%15%13%15%0%
Q2 200522%13%21%15%13%16%1%
Q3 200522%13%20%15%13%16%1%
Q4 200522%13%20%15%13%16%1%
Q1 200622%13%20%15%13%16%0%
Q2 200622%14%20%15%13%16%0%
Q3 200622%14%20%15%12%17%0%
Q4 200622%14%19%16%12%17%0%
Q1 200722%14%19%16%12%18%0%
Q2 200722%14%19%16%12%18%0%
Q3 200722%13%18%16%12%18%0%
Q4 200722%13%18%15%12%18%0%
Q1 200822%13%18%15%12%19%0%
Q2 200822%13%18%15%12%19%0%
Q3 200822%13%18%15%12%19%0%
Q4 200822%13%18%15%12%19%0%
Q1 200922%13%18%15%12%20%0%
Q2 200923%13%18%15%12%20%0%
Q3 200923%13%18%15%12%20%0%
Q4 200923%13%18%14%12%20%0%
Q1 201024%13%17%14%12%20%1%
Q2 201024%13%17%14%12%20%1%
Q3 201024%13%17%14%12%20%1%
Q4 201025%13%17%14%11%20%1%
Q1 201125%13%17%14%11%20%1%
Q2 201125%13%17%14%11%20%1%
Q3 201125%13%17%14%11%19%1%
Q4 201125%13%17%14%11%19%1%
Q1 201225%13%17%14%11%19%1%
Q2 201225%13%17%14%11%19%1%
Q3 201225%13%17%14%11%19%1%
Q4 201225%13%17%14%12%18%0%0%1%0%0%0%0%
Q1 201325%13%17%13%12%18%0%0%1%1%0%0%1%
Q2 201325%13%17%13%12%18%0%0%1%1%0%0%1%
Q3 201325%13%16%13%12%18%0%0%1%0%0%0%1%
Q4 201324%13%16%12%12%18%1%0%1%0%0%1%1%
Q1 201424%13%16%12%12%17%1%0%1%1%0%2%1%
Q2 201424%13%16%12%11%17%1%0%2%1%0%2%1%
Q3 201424%13%16%11%11%17%1%0%2%1%0%2%1%
Q4 201424%13%16%11%11%17%1%0%3%1%1%2%2%
Q1 201524%13%16%11%11%16%1%1%3%2%1%2%2%
Q2 201524%12%16%11%11%16%1%1%3%2%1%2%2%
Q3 201524%12%16%11%11%16%1%1%3%2%1%2%2%
Q4 201523%12%15%10%11%16%1%1%3%2%1%2%3%
Q1 201623%12%15%10%11%15%1%1%3%2%1%2%3%
Q2 201623%12%15%10%11%15%1%1%3%2%1%2%4%
Q3 201623%12%14%10%11%15%1%1%3%2%1%2%4%
Q4 201623%12%14%10%11%15%1%1%3%2%2%2%4%

More information

At-a-glance summary

Between 2004 and Q4 2016, the combined market share for five of the large electricity suppliers (excluding British Gas) in the GB domestic market declined by fourteen percentage points, from 75% to 61%. Individual market shares fluctuated between 10% and 21%. 

In the same period, British Gas was the leading domestic electricity supplier in GB, with a market share ranging between 22% and 25%. 

Until 2012, other suppliers held a market share of below 2%. Since then, they have grown significantly and reached a 15% market share in Q4 2016. Six of these (Utility Warehouse, OVO, First Utility, Utilita, Extra Energy and Cooperative Energy) have increased their individual market shares above 1%, with First Utility reaching over 3%. In November 2016, Cooperative Energy acquired all the customers of GB Energy Supply. As a result, their market share increased by around 0.5 percentage points relative to Q3 2016. 

Relevance and further information

The evolution of market shares is a useful measure of trends in market concentration. They help us understand the impact between market shares and competitive dynamics, both for the six large suppliers and other suppliers, and which companies are winning or losing customers.


We calculate market shares from the number of meter points on the electricity distribution networks, as provided to us by electricity distribution network operators.

Date correct
December 2016
Policy area