UK Electricity kWh Cost Calculator (Ofgem Price Cap £)
Calculate daily, monthly and annual £ GBP UK electricity kWh running costs for Electric Kettle (3kW) and home appliances under the Ofgem Price Cap.
Quick UK Appliance Presets
Understanding the Ofgem Energy Price Cap & UK Standing Charges
Domestic electricity bills in Great Britain comprise a per-unit rate measured in pence per kWh plus a fixed daily standing charge calibrated to your DNO licence region (London, North West, Scotland, Yorkshire, etc.). While the default 24.5p/kWh example reflects typical standard variable Direct Debit rates under the Ofgem Price Cap, Economy 7 night rates, Octopus Agile half-hourly prices and prepayment meters alter hourly costs substantially.
High-Draw Appliances During Grid Stress & Winter Peaks
During tight NESO grid reserve winter evenings (16:00–19:00 GMT), delaying 9.5 kW electric showers, immersion heaters and tumble dryers trims household peak demand and lowers tariff spend on smart time-of-use plans. Estimate off-grid battery autonomy using our Home Backup & Generator Calculator.