Whole-home electricity estimator
Add up what everything in your home costs to run, and see how much of your electricity bill it explains. The list starts with a common household: change it to yours.
A month of running costs
£39.47 a month
150 kWh a month, £473.67 a year, before standing charges.
Optional: to see how much of your bill these appliances explain.
| Period | Cost | Energy | CO2e |
|---|---|---|---|
| A day, on average | £1.30 | 4.93 kWh | 1.1 kg |
| A month | £39.47 | 150 kWh | 32.6 kg |
| A year | £473.67 | 1,800 kWh | 391 kg |
Where a year’s cost goes
- Fridge freezer£124.49
- Electric oven£108.08
- Kettle£72.05
- LED or LCD TV£44.06
- LED downlight × 8£39.96
- Laptop£25.11
- Wi-Fi router£23.06
- Washing machine£20.84
- Microwave oven£16.01
How we calculated this
Each appliance runs at its typical power, with the use you set. Anything rated in kWh a year, like a fridge, uses its label figure. Open an appliance for its sources, or to set its wattage exactly.
The starting household is our assumption of a common one, not a measured average: change it to yours. A month is a twelfth of a 365-day year.
Electricity costs 26.32p/kWh. That is the published figure for the United Kingdom, 1 Oct – 31 Dec 2026, from Ofgem. Average for England, Scotland and Wales, paying by Direct Debit. No VAT on electricity from 1 October 2026 to 31 March 2027.
Standing charges are left out: you pay them whether or not the appliance runs.
Emissions use 0.217 kg CO2e per kWh, the lifecycle intensity of electricity generated in the United Kingdom in 2025, from Ember, via Our World in Data. Lifecycle means building the power stations and supplying their fuel are counted too. It is the grid’s average, not the particular power station an extra appliance brings on.
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