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
2020 Q21-257

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 exited the market (SSE and Engie).  

In the second quarter of 2020, one supplier, Colorado, entered the market and two suppliers exited. One supplier (GNergy) ceased to trade and we appointed one SoLR (Bulb). During the same period, EDF completed the acquisition of iSupply via a market transaction that was initiated in March 2020.

E.ON acquired npower in January 2020, but the migration of customers is still ongoing and npower’s exit has not yet been recorded for the purpose of this indicator. In September and October 2020, more suppliers left the market. All 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
October 2020
Policy areas