Supplier entries and exits in the domestic energy retail market (GB)


This chart shows the number of licenced suppliers that have started or stopped actively supplying customers in the GB domestic gas and electricity markets in each quarter in comparison to the total number of suppliers that continued to supply the market in the same period.

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Supplier entries and exits in the domestic energy retail market (GB)
Supplier entriesSupplier exitsContinuing active suppliers
2016 Q13040
2016 Q21043
2016 Q34044
2016 Q45-248
2017 Q12051
2017 Q26053
2017 Q37-159
2017 Q43065
2018 Q13-168
2018 Q21-170
2018 Q30-370
2018 Q40-567
2019 Q11-462
2019 Q25059
2019 Q31-464
2019 Q41-461
2020 Q11-258

More information


There had been a steady increase in the number of licensed suppliers becoming active in the domestic energy markets up to mid-2018. In the second half of 2018, no new domestic suppliers became active, while eight suppliers left the market. During 2019, eight suppliers entered and twelve suppliers exited the market. In the first quarter of 2020, one supplier entered (Omni) and two suppliers left the market.  

In January 2020, OVO completed the purchase of SSE, while keeping SSE as a separate white label brand. This is shown in the chart as one exit of a licensed supplier between January 2020 and March 2020. The other exit included in this period is Engie, as its domestic business was acquired by Octopus and became effective from February 2020.

Between January 2020 and March 2020 one supplier (GNergy) ceased to trade and we had to appoint a SoLR. During the same period a number of exits via trade sales also happened for which the migration of customers is still ongoing. These include: npower (acquired by E.ON) and iSupply (EDF). These exits will be reflected in subsequent updates. 


Relevance and further information

This chart helps understand the GB energy market dynamics by showing the number of entries and exits that underpins the evolution in the number of active licensed suppliers over time.

For a breakdown of how many active suppliers are supplying each fuel type please go to our chart Number of active suppliers by fuel type.


We calculate the number of entries, exits and total number of active licensed suppliers (i.e. those with customers) from the information that both network operators and suppliers provide to us. White label suppliers are not included in this number. White label suppliers are organisations without supply licenses that partner with an active licensed supplier to offer gas and electricity using their own brand.

Date correct
July 2020
Policy areas