Appliance electricity cost
How much does a portable electric heater cost to run?
This worked example uses 2,000 W, 4 hours on each use day and 120 use days per year. Change any of these inputs in the calculator.
Illustrative 25p/kWh electricityAbout £240/year
960 kWh/year · 8.00 kWh per use day
Electricity-price sensitivity
| Electricity price | Energy/use day | Annual energy | Annual cost |
|---|---|---|---|
| 15p/kWh | 8.00 kWh/day when used | 960 kWh/year | £144/yr |
| 25p/kWh | 8.00 kWh/day when used | 960 kWh/year | £240/yr |
| 35p/kWh | 8.00 kWh/day when used | 960 kWh/year | £336/yr |
Important assumption
A thermostatically controlled heater may not draw 2 kW continuously. This page shows a deliberately simple four-hour/day winter-use scenario.
This is a worked planning estimate, not a measurement of your appliance. A smart plug, energy monitor or manufacturer annual-kWh figure usually gives a better real-world input for cycling appliances.