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 | 11.20p 400W |
£0.78 2.8kWh |
£5.49 19.6kWh |
800W | 22.40p 800W |
£1.57 5.6kWh |
£10.98 39.2kWh |
1100W (1.1kW) | 30.80p 1100W |
£2.16 7.7kWh |
£15.09 53.9kWh |
1400W (1.4kW) | 39.20p 1400W |
£2.74 9.8kWh |
£19.21 68.6kWh |
1700W (1.7kW) | 47.60p 1700W |
£3.33 11.9kWh |
£23.32 83.3kWh |
2500W (2.5kW) | 70.00p 2500W |
£4.90 17.5kWh |
£34.30 122.5kWh |
3400W (3.4kW) | 95.20p 3400W |
£6.66 23.8kWh |
£46.65 166.6kWh |
*based on 7 hrs a day at maximum input using the UK: Price Cap (April 2022) electricity rate of 28.00 pence per kWh. Heaters with a thermostat will automatically turn off when required room temperature is reached.
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