UK Energy Bill Calculators

Calculators

• Wholesale Electricity Cost Calculator
  Estimate how much of a Great Britain household electricity bill comes from wholesale energy costs.

Guides

• How to Calculate the Wholesale Share of an Electricity Bill
• How to Convert £/MWh to p/kWh
• How Wholesale Electricity Costs Affect UK Bills: Price Cap Explained
• Ofgem Wholesale Cost Allowance Explained
• UK Electricity Bill Components Explained: Standing Charge, Unit Rate, and VAT

Frequently Asked Questions

Is a wholesale spot price enough?

No. It is a starting point, but household procurement costs can also reflect losses, demand shape, hedging, imbalance, and transactions.

Why can current price-cap rates differ?

Rates can vary by region, payment method, meter type, tariff, and cap period. Actual bills also depend on consumption.

How often should source data be checked?

At least every price-cap quarter and whenever Ofgem publishes a new workbook or methodology.