Energy bill calculator
A year's gas and electricity at the price cap for your region, your use and the way you pay.
Uses Ofgem's price cap for 1 October to 31 December 2026. Prices checked 13 November 2026.
Result
At the price cap for October to December 2026, this home would pay £1,724 a year for gas and electricity.
a year, to the nearest pound
| A month, on average | £143.63 |
|---|
- Electricity you use £658.00 (38%)
- Electricity standing charge £200.13 (12%)
- Gas you use £757.15 (44%)
- Gas standing charge £108.33 (6%)
| July to September 2026 | £1,664 |
|---|---|
| Now: October to December 2026 | £1,724 |
Compared with July to September 2026, that is £59.77 a year more.
Ofgem says there is no VAT on electricity from 1 October 2026 to 31 March 2027, so costs cannot be compared directly with earlier periods.
Show the workings
| Step | Sum | Answer |
|---|---|---|
| Electricity you use | 2,500 kWh × 26.32p | £658.00 |
| Electricity standing charge | 365 days × 54.83p | £200.13 |
| Gas you use | 9,500 kWh × 7.97p | £757.15 |
| Gas standing charge | 365 days × 29.68p | £108.33 |
| Total for the year | £658.00 + £200.13 + £757.15 + £108.33 | £1,724 |
What this leaves out or assumes
- Prices stay the same all year. The price cap changes every three months, so your real bill will differ.
- You are on a standard variable tariff priced at the cap. A fixed deal has its own prices.
- Gas prices include VAT. Ofgem's cap prices are the most a supplier can charge.
Where the figures come from
- Electricity unit rate, price cap, Great Britain average, Direct Debit: 26.32p per kWh. Source: Ofgem: Energy price cap unit rates and standing charges. Checked 13 November 2026.
- Electricity standing charge, price cap, Great Britain average, Direct Debit: 54.83p a day. Source: Ofgem: Energy price cap unit rates and standing charges. Checked 13 November 2026.
- Gas unit rate, price cap, Great Britain average, Direct Debit: 7.97p per kWh. Source: Ofgem: Energy price cap unit rates and standing charges. Checked 13 November 2026.
- Gas standing charge, price cap, Great Britain average, Direct Debit: 29.68p a day. Source: Ofgem: Energy price cap unit rates and standing charges. Checked 13 November 2026.
- Typical yearly electricity use, medium user: 2,500 kWh a year. Source: Ofgem: Review of typical domestic consumption values, decision (Table 1). Checked 13 November 2026.
- Typical yearly gas use, medium user: 9,500 kWh a year. Source: Ofgem: Review of typical domestic consumption values, decision (Table 1). Checked 13 November 2026.
Typical bills at the current cap
These use Ofgem's typical yearly figures for low, medium and high use, at the average price for Great Britain when paying by Direct Debit.
| Use | Electricity | Gas | Gas and electricity | Electricity only |
|---|---|---|---|---|
| Low | 1,600 kWh | 6,000 kWh | £1,208 | £621.25 |
| Medium | 2,500 kWh | 9,500 kWh | £1,724 | £858.13 |
| High | 3,800 kWh | 14,000 kWh | £2,424 | £1,200 |
Typical use: Ofgem: Review of typical domestic consumption values, decision (Table 1). Prices: Ofgem: Energy price cap unit rates and standing charges.
Ofgem gives the cap as £1,723 a year for a typical home. Our sum for medium use is within a pound of that. The small gap is because the prices Ofgem publishes are rounded to two decimal places.
What the price cap limits
The cap limits two prices: what you pay for each kWh of gas and electricity, and the daily standing charge. It does not limit your total bill. Use more and you pay more.
It applies if you are on a standard variable tariff. Ofgem sets it every three months, and it is different in each region and for each way of paying. See the prices for every region.
Ofgem says there is no VAT on electricity from 1 October 2026 to 31 March 2027, so costs cannot be compared directly with earlier periods.
Finding your yearly use
Look for your yearly use in kWh on a bill, a yearly statement or in your supplier's app. Use those figures if you have them: they will give a much closer answer than the typical ones.