500 W Panel Heater running cost β 1 h occasional use
A 500 W Panel Heater (500 W) running 1 hours/day uses 0.50 kWh and costs 13.1p/day at the Ofgem cap of 26.11p/kWh (1 July to 30 September 2026).
500 W Panel Heater β 1 h occasional use: 500 W Γ· 1000 Γ 1 h Γ 26.11p/kWh = 13.1p/day. Weekly (3 days): 39.2p. Annual: Β£20.37. Coverage: Small bedroom, bathroom, hallway (~8 mΒ²). Source: Energy Saving Trust (wattage, typical/indicative); Ofgem (OGL v3.0).
- Per hour
- 13.1p
- Per day (1 h)
- 13.1p
- Per week (3 days)
- 39.2p
- Per year
- Β£20.37
Heater specification
- Rated power
- 500 W (0.5 kWh/h)
- Coverage
- Small bedroom, bathroom, hallway (~8 mΒ²)
- Cost per kWh (Ofgem cap)
- 26.11p
- Cost per hour
- 13.1p
Energy Saving Trust β typical 500 W panel heater rating
How the cost is worked out
- Wattage: 500 W Panel Heater draws 500 W = 0.5 kWh per hour.
- Daily use: 0.5 kWh Γ 1 h = 0.50 kWh/day.
- Daily cost: 0.50 kWh Γ 26.11p = 13.1p.
- Weekly (3 days): 13.1p Γ 3 = 39.2p.
- Annual: 39.2p Γ 52 = Β£20.37.
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500 W wattage from Energy Saving Trust β Heating your home guide (typical appliance ratings) (typical/indicative). Unit rate 26.11p/kWh from Ofgem β Energy price cap unit rates and standing charges (1 July to 30 September 2026), OGL v3.0.