How much more you will pay for energy in the UK from October
The UK’s energy price will increase by 2% in October, as announced by energy regulator Ofgem on 27 August 2025.
The price cap sets a maximum rate per unit and a standing charge that energy companies are allowed to levy on customers for their energy use.
Note that those on fixed tariffs will not be affected by the increase to the energy price cap.
For the average household on a default tariff, this increase will lead to their energy bills rising by around £2.93.
Ofgem’s price cap for October is set at £1,755 based on what it describes as a typical household – a 2-3 bedroom house with two or three people. However, the extent to which different customers will be affected by the increase to the price cap depends greatly on the size of their home and its energy efficiency.
Average increase to energy bills
Online property platform Rightmove has published a comprehensive comparison of how much the average energy bill will increase for houses of a specific size and energy rating.
Smaller flats with an EPC (Energy Performance Certificate) rating of ‘A’ will only see an increase of £10 to their total bill, while the owner of a 5-bed detached house with an EPC rating of ‘G’ will be paying £210 more for energy thanks to the price cap increase.
| Property type | EPC rating A | EPC rating B | EPC rating C | EPC rating D | EPC rating E | EPC rating F | EPC rating G |
|---|---|---|---|---|---|---|---|
| 1-bed flat | £10 | £16 | £25 | £36 | £49 | £60 | £78 |
| 2-bed flat | £10 | £19 | £29 | £43 | £59 | £76 | £98 |
| 3-bed terraced house | £10 | £21 | £36 | £51 | £70 | £89 | £115 |
| 3-bed semi-detached house | £9 | £20 | £37 | £51 | £70 | £91 | £111 |
| 3-bed detached house | £9 | £23 | £40 | £56 | £76 | £97 | £129 |
| 4-bed semi-detached house | £12 | £25 | £46 | £65 | £91 | £128 | £158 |
| 4-bed detached house | £12 | £25 | £50 | £69 | £94 | £120 | £170 |
| 5-bed detached house | £15 | £39 | £66 | £92 | £123 | £158 | £210 |
The price cap is defined for the three-month period of October-December 2025, and the increase announced by Ofgem falls slightly below inflation.
When the price cap increase was announced Ofgem Director General of Markets Tim Jarvis said that the country will continue to see fluctuations in its energy prices until it is insulated from volatile international gas markets.
He said it was crucial that the United Kingdom works to diversify its energy mix to reduce the reliance on markets it does not control.
