Data
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- GB electricity bill breakdown by component (CSV) — annual cost of wholesale power, network charges, subsidies, levies, VAT and supplier margin for a 3100 kWh household, financial years FY 15-16 to 26 FYTD. Total bill in the last complete financial year (FY 25-26): £952.86.
- Wholesale electricity and gas prices (CSV) — daily GB day-ahead power prices (LCCC IMRP and Elexon APX) and gas prices (ONS SAP, EEX, Smart Energy), nominal and inflation-adjusted. Updated every weekday morning.
- 2030 household bill forecast (CSV) — component-by-component projection to 2030 in real 2025 prices. £966 in 2025 to £1049 in 2030.
Sources
Wholesale power: Low Carbon Contracts Company Intermittent Market Reference Price and Elexon day-ahead APX. Gas: ONS System Average Price, EEX, and Smart Energy. Network and policy costs are derived from Ofgem price cap models, RIIO determinations, NESO balancing cost data and LCCC and Ofgem scheme accounts. Inflation adjustment uses ONS CPI.
Figures are recompiled by Ben James; errors are his own. Please cite as: Ben James, GB Electricity Bills, https://www.electricitybills.uk.