Retail market indicators

Retail highlights January 2023

In our monitoring of the retail energy market for gas and electricity, we collect and analyse a vast range of data. Our retail market indicators give a snapshot of this monitoring. They draw from a comprehensive framework which underpins our ongoing monitoring, including our annual update on the retail energy markets in Great Britain. You can view these updates in the related publications section below. 

These market indicators and data are not intended for use or to be relied on for any commercial purposes. View copyright and disclaimer

If you have feedback on the indicators, please contact us.

Market structure

In Q3 2022 the number of active licensed suppliers dropped by one to 23. This was due to one exit and no entries.

The combined market share of the large legacy suppliers fell by 1% to 71% in gas and remained at 72% in electricity. Other large, medium and small suppliers accounted for the remaining 29% and 28% market shares respectively, including Octopus with a share of 11%.

For our classification of suppliers by size see the ‘information tab’ of the market share indicators.

Prices and profits

In December 2022 the wholesale market continued to experience significant price volatility.

After the entry into effect of the Government’s Energy Price Guarantee (EPG) on 1st October, suppliers are expected to change their tariff prices in compliance with the EPG. While variable tariffs have generally remained on offer with prices adjusted towards the EPG levels, suppliers have withdrawn fixed tariffs from sale to new customers and adjusted prices only for existing (but not for sale) fixed tariffs. As a result, there is no available update on the average price of fixed tariffs in the market this month.

The average price of SVTs with large legacy suppliers for a typical dual fuel customer paying with direct debit remained at £2,500, coinciding with the Energy Price Guarantee. The cheapest tariff in the market remained at £2,375 in November 2022. The cheapest tariff basket was also unchanged at £2,482. As a result, the differential between the average price of SVTs for the large legacy suppliers and the cheapest tariff basket was unchanged at £18.

With SVTs generally representing the cheapest tariffs in the current market crisis conditions, most customers have tended to move to or remain on these tariffs after fixed deals came to an end. As of October 2022, the proportion of domestic customer accounts on default tariffs with large and medium suppliers, not paying via the prepayment payment method, was 77% in electricity and 78% in gas, an increase of around eleven percentage points compared to the last update in April 2022 (these figures exclude Bulb’s customer accounts as they’ve always offered only one variable tariff). 

From 14 April 2022, we have required suppliers to pay a Market Stabilisation Charge when acquiring new customers. The market stabilisation charge only applies in certain market conditions (that would otherwise create risks to market stability), which we assess on a weekly basis. You can find out if the Market Stabilisation Charge has been triggered, and if so what the level of the charge is here: Market Stabilisation Charge dashboard.


Switching has been falling significantly since the end of 2021, while showing monthly fluctuations.

In November 2022, the total number of switches was up 26% relative to October 2022, and 24% below the level observed in November 2021. The number of electricity switches increased from 64,903 to 78,972, while gas switches also increased from 37,121 to 49,144.

The proportion of net gains switching away from the large legacy supplier was around 27%, compared to 5% in November 2021, mainly reflecting customers’ movements towards other large and medium suppliers. 

After the entry into effect of the new switching arrangements on 18 July 2022, average switching times have started to show substantial reductions. The electricity average switching time was down to 8 and 7 days in August and September 2022, respectively, compared to the typical 15-17 days observed in previous years. The equivalent indicator for gas is temporarily unavailable, due to Xoserve stopping the relevant data provision of gas switching times in August 2022.

Methodology and sources

We have selected this range of indicators to support general understanding of the market, including how they contribute to the key priorities outlined in our strategic narrative. We also aim to provide a picture of the market where it is not produced elsewhere, or where there is scope for us to set a clear methodology for the data.

Our data comes from sources that are either publicly available, provided by third parties or from responses to Ofgem information requests. Specific sources and relevant dates are listed with each indicator. We are grateful to third parties for allowing us to reproduce their data. 

Most of these indicators will be updated quarterly while still allowing access to historic information. Updates will depend on the availability of data for an indicator. 

We will review the indicators periodically to ensure they continue to help promote transparency and understanding of the retail energy market and as additional sources of information become available.