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Practical guides to the numbers on your electricity bill: why bills jump, what your appliances really cost to run, how to read a meter, and why the same electricity costs three times more in one European country than in another. Every figure traces back to the WattIndex data pages and calculators.

Electric heater, washing machine and oven in a bright modern home interior8 November 2026

What Uses the Most Electricity in a Home?

Heating, hot water and a few big appliances drive most of a home electricity bill. See the ranking by wattage and annual kWh, and what each costs to run.

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Person at a kitchen table reading a paper electricity bill with a concerned expression7 November 2026

Why Is My Electricity Bill So High? 9 Causes and How to Check Each One

A high electricity bill usually has a simple cause. Work through 9 checks, from usage spikes and estimated readings to price rises, and find yours.

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WattIndex

WattIndex tracks European electricity prices from Eurostat retail data. Household prices H1 2026, band DC, all taxes and levies included (nrg_pc_204). Business prices H1 2026, band IC, excluding VAT and other recoverable taxes (nrg_pc_205).

Source: Eurostat (ec.europa.eu/eurostat), datasets nrg_pc_204 and nrg_pc_205, © European Union, CC BY 4.0. United Kingdom panel: Ofgem price cap, October to December 2026.

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© 2026 WattIndex Household prices: Eurostat H1 2026 Covering 39 European countries