Night Storage Heaters Electricity Cost Calculator
Night storage heaters use electricity supplied at cheaper off-peak night time tariffs (Economy 7 and Economy 10). Storage heaters radiate heat stored during the night slowly releasing this heat the following day.
Storage heaters are rated in Watts (W) or Kilowatts (kW). Check what your heaters are rated at, then use our energy calculator to see how much each heater should cost to run per hour, day or week.
Storage Heater Running Costs
| Power Rating | Per Hour | Per Day* | Per Week |
|---|---|---|---|
| 400W | £0.11 400W |
£0.76 2.8kWh |
£5.30 19.6kWh |
| 800W | £0.22 800W |
£1.51 5.6kWh |
£10.60 39.2kWh |
| 1100W (1.1kW) | £0.30 1100W |
£2.08 7.7kWh |
£14.57 53.9kWh |
| 1400W (1.4kW) | £0.38 1400W |
£2.65 9.8kWh |
£18.54 68.6kWh |
| 1700W (1.7kW) | £0.46 1700W |
£3.22 11.9kWh |
£22.52 83.3kWh |
| 2500W (2.5kW) | £0.68 2500W |
£4.73 17.5kWh |
£33.11 122.5kWh |
| 3400W (3.4kW) | £0.92 3400W |
£6.43 23.8kWh |
£45.03 166.6kWh |
*based on 7 hrs a day at maximum input. Heaters with a thermostat will automatically turn off when required room temperature is reached.
Electricity costs are calculated using the UK: Price Cap (Apr 2025) electricity rate of £0.27 per kWh (incl. VAT).
More energy calculators...
← SWIPE →
See the most energy efficient...
← SWIPE →
Heater Prices
| Heater type: |
You can compare the running costs and prices of thousands of electrical products with Sust-it, simply choose from the options below:
Energy Efficient Electricals
Low Energy LED Bulb Prices
| Bulb type: |
Vacuum Cleaner Prices
| Cleaner type: |
Electric Shower Prices
| Shower power: |
Microwave Oven Prices
| Microwave power: |
Small Appliance Prices
| Product type: |
Vehicle Running Costs
| Fuel type: |
Air Conditioning Units are listed under Heating & Cooling - click here to view their power consumption.
