2 kW Storage Heater (charge rate) running cost — 4 h evening warm-up
A 2 kW Storage Heater (charge rate) (2,000 W) running 4 hours/day uses 8.00 kWh and costs £2.09/day at the Ofgem cap of 26.11p/kWh (1 July to 30 September 2026).
2 kW Storage Heater (charge rate) — 4 h evening warm-up: 2,000 W ÷ 1000 × 4 h × 26.11p/kWh = £2.09/day. Weekly (7 days): £14.62. Annual: £760.32. Coverage: Charges overnight on Economy 7 — heats medium room during the day. Source: Energy Saving Trust (wattage, typical/indicative); Ofgem (OGL v3.0).
- Per hour
- 52.2p
- Per day (4 h)
- £2.09
- Per week (7 days)
- £14.62
- Per year
- £760.32
Heater specification
- Rated power
- 2,000 W (2.0 kWh/h)
- Coverage
- Charges overnight on Economy 7 — heats medium room during the day
- Cost per kWh (Ofgem cap)
- 26.11p
- Cost per hour
- 52.2p
Energy Saving Trust — typical 2 kW storage heater charge rate
How the cost is worked out
- Wattage: 2 kW Storage Heater (charge rate) draws 2,000 W = 2.0 kWh per hour.
- Daily use: 2.0 kWh × 4 h = 8.00 kWh/day.
- Daily cost: 8.00 kWh × 26.11p = £2.09.
- Weekly (7 days): £2.09 × 7 = £14.62.
- Annual: £14.62 × 52 = £760.32.
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2,000 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.