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AnswerHow much does it cost to run a 1500W electric radiator?
A 1500W electric radiator costs about £1.84 a day to run for 5 hours (roughly £55/month) at 24.5p per kWh.
Running cost = power (kW) × hours × unit price. A thermostat and timer cut this a lot, and oil-filled models cycle off once warm.
| 5 hours/day | £1.84 |
|---|---|
| Per month | £55 |
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2026 figures · BTU uses standard UK heat-loss methodology; running costs use the Ofgem price cap · always confirm with a professional.