Energy Bill Estimator
The Energy Bill Estimator gives you a 2026-rate annual energy cost projection for your home based on property type, bedrooms, occupants, insulation level and heating fuel. It uses Ofgem price-cap rates and government typical-usage figures so you can sanity-check what your supplier is charging or model the effect of switching heating type.
Energy Bill Estimator
Estimate your annual energy costs based on your property and household.
See 20 real-world examples
Each link below runs this calculator with real UK city and property inputs and publishes the exact computed savings, payback time, install cost and CO2 figures.
- Energy Bill Estimator for a 3-Bed Semi in Newcastle
- Energy Bill Estimator for a 3-Bed Semi in Stoke
- Energy Bill Estimator for a Typical Southampton Home
- Energy Bill Estimator for Edinburgh Homes
- Energy Bill Estimator for Your Bristol Home
- Energy Bill Estimator for Your Leeds Home
- Energy Bill Estimator for Your Leicester Home
- Energy Bill Estimator for Your Manchester Home
- Energy Bill Estimator for Your Nottingham Home
- Energy Bill Estimator for Your Plymouth Home
- Estimate Your Belfast Home Energy Bill
- Estimate Your Energy Bill in Sheffield
- Estimate Your Energy Bill in Swansea
- Estimate Your Energy Bills in Liverpool
- Estimate Your Glasgow Home Energy Bill
- What Is the Typical Energy Bill for a 3-Bed Semi in Birmingham?
- What's Your Energy Bill in Coventry?
- What's Your Estimated Energy Bill in Cardiff?
- Your Energy Bill Estimate for a 3-Bed Semi in London
- Your Estimated Energy Bills for a Brighton Home
How this calculator works
Gas demand is estimated from BEIS Typical Domestic Consumption Values (TDCVs) by property type, with multipliers for bedroom count and insulation quality. Electricity demand uses similar TDCV bases plus an occupant factor. Costs use the Ofgem price cap for 2026: 7.2p per kWh for gas, 24.5p per kWh for electricity, 31p per day gas standing charge and 60p per day electricity standing charge. Heat-pump cost is electricity demand divided by a coefficient of performance (COP) of 3.0.
Sources & references
Frequently asked questions
How accurate are the bill estimates?
Estimates are typically within ±20% of actual bills for owner-occupied homes. The biggest unknowns are individual usage habits — thermostat setting, occupancy patterns, and how often you boil the kettle. We use BEIS Typical Domestic Consumption Values as the demand baseline.
Where do the gas and electricity rates come from?
Rates are taken from the Ofgem default tariff price cap effective for 2026: 7.2p per kWh gas, 24.5p per kWh electricity, with regional standing charges averaged. We update the figures every cap review (quarterly).
Why is my actual bill higher than the estimate?
Common reasons: a higher thermostat setting, leakier home than the "average" insulation rating suggests, electric showers or tumble dryers, or a fixed tariff above the cap. Compare your meter readings against the kWh figures we estimate to localise the gap.
Are standing charges included?
Yes. We add the daily standing charge × 365 to both gas and electricity costs. The total comes to around £330 a year combined — this is unavoidable even at zero consumption.
How does heat pump running cost compare to gas?
A heat pump uses about one-third of the kWh that a gas boiler would (COP of 3), but each kWh of electricity costs about 3.4× more than gas. Net effect: 0.33 × 3.4 ≈ 1.12 — so running cost is broadly comparable, before factoring in lower standing charges if you ditch the gas connection.
Tool: Energy Bill Estimator. Last reviewed: . Figures based on Ofgem price cap, gov.uk grant guidance, and Energy Saving Trust advice. Verify scheme eligibility with your installer before commissioning work.