Retail market indicators

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.

There were 21 active suppliers in the domestic gas and electricity retail markets as of March 2025. This consisted of 18 suppliers active in both gas and electricity, 1 in gas and 2 in electricity, with no exits and entries in the during the first quarter of 2025. 

During 2024 the number of suppliers remained same at 21 due to no new entries and exits. In 2025, during the first quarter no exit-entries have been identified and therefore the total number of suppliers as of March 2025 remain at 21. 

In August 2025, gas prices fluctuated throughout the month primarily due to geopolitical developments. After an initial increase at the beginning of the month, gas prices fell in the following weeks and then slightly rose again in the second half of the month. Power prices fell at the start of the month, driven by increased renewable generation. Power prices then rose during the week commencing 11 August due to reduced wind generation, before falling again in the second half of the month as wind power increased.

For more detailed updates on wholesale prices see: Wholesale market indicators.

In August 2025, the number of new fixed tariffs on offer increased compared to July 2025. Around 80% of these offers were available to the whole market, rather than exclusive to specific customers, with the majority of prices lower than the price cap for 1 July to 30 September 2025. The average fixed tariff was priced at £1,635 in August 2025, £19 lower than in the previous month.

In August 2025, the average price of SVTs with large legacy suppliers for a typical dual fuel customer paying with direct debit remained constant at 1,719, which is aligned with the price cap for the period 1 July to 30 September 2025. The market cheapest tariff decreased from £1,531 in July 2025 to £1,490 in August 2025, and the cheapest tariff basket decreased from £1,594 in July 2025 to £1,551 in August 2025. See the methodology for information on how the cheapest tariff basket is calculated.

The update of all profit and average bill indicators based on Consolidated Segmental Statements (CSS) has been paused. Only three large domestic legacy suppliers (British Gas, EDF and Scottish Power) and one non-domestic supplier (SSE) had submitted a CSS under the regulation before consultation in 2023. This information was insufficient to generate market representative statistics. A review of the CSS obligation is now completed and will expand CSS reporting to most of the domestic and non-domestic market. This will apply to supplier financial accounts for 2023 onwards with publication 10 months after the company’s financial year end. We intend to resume the publication of these indicators as soon as new data becomes available. 

Read: Reviewing the Consolidated Segmental Statements – our decision for more information.

Read: Energy companies’ Consolidated Segmental Statements (CSS) for more details.

The Market Stabilisation Charge was a temporary measure in place from 14 April 2022 to 31 March 2024 which required all domestic suppliers acquiring a domestic customer to pay a charge to the losing supplier when wholesale prices fell considerably below the relevant wholesale price cap index. For more information about the MSC read: Market Stabilisation Charge dashboard.

In July 2025, the total number of switches saw over 50% increase in both fuels from June 2025 to July 2025. The number of electricity switches went from 182,340 in June 2025 to 273,909 in July 2025. Gas switches went from 133,296 in June 2025 to 210,455 in July 2025.

Suppliers’ Customer Credit Balances (CCBs) are an important aspect of the retail energy market, and this is reflected in licence obligations in relation to both consumer standards and supplier financial resilience.

The data below reflects Ofgem's chosen policy measure. This is for Fixed Direct Debit domestic customers.  This focuses the analysis on how households are impacted by CCBs. We have ‘netted off unbilled consumption’ meaning that energy you have paid for but not used does not feature. Finally, as Customer credit balances are seasonal (they rise in summer months and are then spent in colder winter months) we have included the yearly average to disaggregate the seasonal variation from its underlying trend.

These figures reflect households that are in credit, the values are true as of the last day of each calendar quarter (31^st March, 30^th June, 30^th September 31^st December).

Finally, the use of quartiles may be impacted as usage changes in the future, which would need to be reviewed and recognised.

This data is published by the end of March, June, September and December each year.  For further information see customer credit balances explanatory note.

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.