Energy Bill Calculator
Our energy bill calculator estimates your annual gas and electricity costs based on your household size, home type, and usage pattern — using the current Ofgem Q3 2026 price cap rates. It also shows how your usage compares to national averages and identifies the potential saving from reducing consumption.
Energy Bill Calculator
Estimate your annual energy bill based on the current Ofgem price cap unit rates.
Current Ofgem Energy Prices Q3 2026
Ofgem sets a price cap each quarter limiting the unit rates and standing charges suppliers can charge on default tariffs. For Q3 2026 (July–September 2026), the capped rates are: electricity unit rate 26.11p per kWh; gas unit rate 7.33p per kWh; electricity standing charge 57.19p per day; gas standing charge 29.04p per day. The typical annual bill for a medium household is approximately £1,862 under these rates — a significant increase from the Q2 2026 level of £1,641. Use our Home Energy Savings Calculator to model the annual saving from efficiency improvements, and our Budget Planner to incorporate your energy bill as part of your monthly financial picture.
Frequently Asked Questions
The Ofgem typical annual bill figure is based on a medium household using 2,700 kWh of electricity and 11,500 kWh of gas per year. At Q3 2026 rates, this produces an annual bill of approximately £1,862. Actual bills vary significantly by home size, insulation, and occupancy.
The unit rate is what you pay per kWh of energy used. The standing charge is a daily fixed fee for being connected to the network — approximately £314 per year combined for electricity and gas at current rates, regardless of how much energy you use.
Fixed tariffs lock in your unit rate for typically 12–24 months, protecting against price cap increases. If you believe the price cap will rise in future quarters, fixing provides cost certainty. If the cap is expected to fall, staying on the variable cap may be cheaper.
No — the price cap limits the per-unit rate suppliers can charge, not the total annual bill. Higher consumption always leads to higher bills, regardless of the cap.
ECO4 funds insulation and heating upgrades for low-income and vulnerable households. The Great British Insulation Scheme provides support for cavity and loft insulation. Eligibility and funding change regularly — check gov.uk for current schemes.
Enter your annual electricity and gas consumption in kilowatt hours (kWh). Your energy supplier’s annual statement shows consumption; smart meter apps typically show daily or monthly figures that can be annualised. Average UK household consumption is approximately 2,700 kWh electricity and 11,500 kWh gas, but this varies significantly with property size, insulation level, heating system, and occupancy. The calculator applies current Ofgem price cap unit rates and standing charges. If you are on a fixed-rate tariff, your unit rate may differ from the cap — use your actual tariff rate from your bill or supplier app. The cap protects variable tariff customers; fixed tariff customers agreed their rate separately and it may be above or below the cap depending on when they fixed.
Important Information
This calculator is provided for general information and planning purposes only. It does not constitute financial or tax advice and should not be relied upon as such. Figures are indicative estimates based on simplified, publicly available criteria and stated assumptions. Actual results depend on your full circumstances. See our Disclaimer for further information.