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British energy price cap to rise 4% in October as fixed deals offer potential savings

Energy bills for millions of households are set to increase, but fixed-rate tariffs may allow consumers to reduce annual costs.

The short version

  • Great Britain's energy price cap will increase by 4% on 1 October, bringing typical annual default tariff bills to £1,723.
  • Households could save up to £173 annually compared to the October cap by switching to fixed-rate tariffs currently on the market.
  • Energy analysts project bills could rise by an additional 9% in January 2027, though official figures will not be confirmed until November.

Key facts

  • The energy price cap for Great Britain will rise by 4% on 1 October, increasing average annual default tariffs to £1,723 for 22 million households.[The Guardian]
  • The October cap increase follows a 13% rise in energy rates that took effect in July.[The Guardian]
  • Approximately 11 million households, or 35% of Great Britain's total, are on fixed-rate tariffs and will not be impacted by the October cap increase.[The Guardian]
  • The lowest fixed tariff currently available offers typical usage at £1,550 annually, which is £173 below the upcoming October cap.[The Guardian]
  • A temporary government VAT reduction on domestic electricity from 5% to 0% will run from 1 October through 31 March 2027, saving typical households £45 per year.[The Guardian]

What remains uncertain

  • Cornwall Insight forecasts a 9% rise in typical household bills in January 2027 to about £1,872 annually, but official caps for that period will not be finalized until November.[The Guardian]

Sources