500 W Panel Heater running cost — 8 h all-day winter
A 500 W Panel Heater (500 W) running 8 hours/day uses 4.00 kWh and costs £1.04/day at the Ofgem cap of 26.11p/kWh (1 July to 30 September 2026).
500 W Panel Heater — 8 h all-day winter: 500 W ÷ 1000 × 8 h × 26.11p/kWh = £1.04/day. Weekly (7 days): £7.31. Annual: £380.16. Coverage: Small bedroom, bathroom, hallway (~8 m²). Source: Energy Saving Trust (wattage, typical/indicative); Ofgem (OGL v3.0).
- Per hour
- 13.1p
- Per day (8 h)
- £1.04
- Per week (7 days)
- £7.31
- Per year
- £380.16
Heater specification
- Rated power
- 500 W (0.5 kWh/h)
- Coverage
- Small bedroom, bathroom, hallway (~8 m²)
- Cost per kWh (Ofgem cap)
- 26.11p
- Cost per hour
- 13.1p
Energy Saving Trust — 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 × 8 h = 4.00 kWh/day.
- Daily cost: 4.00 kWh × 26.11p = £1.04.
- Weekly (7 days): £1.04 × 7 = £7.31.
- Annual: £7.31 × 52 = £380.16.
Reduce your heating costs
A professional boiler service, draught proofing, or loft insulation can cut your home heating bill significantly. GeraHome connects you with trusted, vetted heating engineers.
Find a heating engineerSame usage — other heater types
Track heating costs
Updated each time the Ofgem cap changes.
No spam. Unsubscribe anytime. A Gera Services product.
500 W wattage from Energy Saving Trust — Heating your home guide (typical appliance ratings) (typical/indicative). Unit rate 26.11p/kWh from Ofgem — Energy price cap unit rates and standing charges (1 July to 30 September 2026), OGL v3.0.