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Electric Heating · Ofgem 1 July to 30 September 2026

1 kW Panel Heater running cost — 12 h cold snap

A 1 kW Panel Heater (1,000 W) running 12 hours/day uses 12.00 kWh and costs £3.13/day at the Ofgem cap of 26.11p/kWh (1 July to 30 September 2026).

1 kW Panel Heater — 12 h cold snap: 1,000 W ÷ 1000 × 12 h × 26.11p/kWh = £3.13/day. Weekly (7 days): £21.93. Annual: £1140.48. Coverage: Small-medium room (~12 m²). Source: Energy Saving Trust (wattage, typical/indicative); Ofgem (OGL v3.0).

Per hour
26.1p
Per day (12 h)
£3.13
Per week (7 days)
£21.93
Per year
£1140.48

Heater specification

Rated power
1,000 W (1.0 kWh/h)
Coverage
Small-medium room (~12 m²)
Cost per kWh (Ofgem cap)
26.11p
Cost per hour
26.1p

Energy Saving Trust — typical 1 kW panel heater rating

How the cost is worked out

  1. Wattage: 1 kW Panel Heater draws 1,000 W = 1.0 kWh per hour.
  2. Daily use: 1.0 kWh × 12 h = 12.00 kWh/day.
  3. Daily cost: 12.00 kWh × 26.11p = £3.13.
  4. Weekly (7 days): £3.13 × 7 = £21.93.
  5. Annual: £21.93 × 52 = £1140.48.

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Same usage — other heater types

500 W Panel Heater: £1.57/day2 kW Panel Heater: £6.27/day2 kW Oil-Filled Radiator: £6.27/day3 kW Convector Heater: £9.40/day2 kW Storage Heater (charge rate): £6.27/day1 kW Infrared Panel Heater: £3.13/day2 kW Portable Fan Heater: £6.27/day

Track heating costs

Updated each time the Ofgem cap changes.

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1,000 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.