UK Energy Bill Calculator 2026 — Electricity & Gas Cost Estimator | Compare Tariffs
Free UK energy bill calculator. Estimate monthly and annual electricity and gas costs based on usage (kWh), tariff rates, and standing charges. Plan household energy spending and compare supplier tariffs.
By the GlobalCalqulate team, founded by Pavan Kusunuri · About our editorial standards
Energy Usage
Electricity Tariff
Gas Tariff
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✓ Reviewed and updated for accuracy using current official rates and widely accepted formulas.
Frequently Asked Questions
Clear answers to common questions to help you use this calculator confidently.
How is my UK energy bill calculated?
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How is my UK energy bill calculated?
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UK energy bills = (kWh usage × unit rate) + standing charge. Suppliers charge a fixed daily standing charge plus variable per-unit rates for electricity and gas. This calculator factors in both to estimate your total monthly and annual costs.
What are typical UK electricity and gas rates in 2026?
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What are typical UK electricity and gas rates in 2026?
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Rates vary by supplier and region (Ofgem price cap). As of 2026, electricity averages around 24p/kWh and gas around 6p/kWh, but rates change quarterly. Check your latest bill to enter accurate rates into this calculator.
Does this calculator include Ofgem price cap regulations?
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Does this calculator include Ofgem price cap regulations?
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This calculator estimates bills based on rates you enter. Ofgem sets price caps that suppliers must follow, which change quarterly. Enter your supplier's current rates to see realistic estimates under price cap regulations.
How can I reduce my energy bills in the UK?
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How can I reduce my energy bills in the UK?
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Reduce usage through insulation, LED bulbs, and efficient appliances. Compare suppliers annually—switching can save £100-300/year. Use this calculator to test different usage scenarios and budget accordingly.
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