Enter how much electricity and gas you use in a year and this estimates the annual bill under the current price cap, split into electricity, gas and standing charges. The defaults are Ofgem typical usage at the July to September 2026 cap; change them to match your own figures.
The defaults are the Ofgem July to September 2026 price cap rates and Ofgem's typical annual usage (2,700 kWh electricity and 11,500 kWh gas). Your own bill depends on your actual usage and tariff, so change the usage figures to match your meter readings and the rates to match your latest bill. The cap sets the rates, not a ceiling on your total: use more than typical and you pay more, use less and you pay less.
For the mechanism behind these numbers see how the energy price cap works. To estimate a single fuel over any period rather than a full year, use the energy bill estimator, and for the fixed daily part see standing charges explained.
Common questions
How is the price cap bill worked out?
For each fuel you multiply the units used by the unit rate, then add the daily standing charge across every day of the year. Add electricity and gas together for the total. The defaults here use Ofgem typical usage at the July to September 2026 cap rates.
Why is my bill different from the cap figure?
The headline cap figure quoted in the news is for a household using a typical amount of energy. The cap limits the unit rate and standing charge, not your total, so if you use more or less than typical your bill moves accordingly. Enter your own usage above for a figure that fits your home.
Does this include VAT?
Yes. The default cap rates already include VAT at the reduced 5% rate for domestic energy, so the total shown is what you would pay.