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Britain's energy price cap to hit three-year high in October, Cornwall Insight says - Finance news and analysis from Global Banking & Finance Review
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Britain's energy price cap to hit three-year high in October, Cornwall Insight says

Published by Global Banking & Finance Review

Posted on August 19, 2026

2 min read

· Last updated: August 19, 2026

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Britain's Energy Price Cap to Reach Three-Year High in October, Analysts Say

Rising Energy Costs and Government Response

By Susanna Twidale

Forecasted Increase in Price Cap

LONDON, Aug 19 (Reuters) - Britain's domestic energy price cap is forecast to rise about 4% in October to a three-year high, analysts at Cornwall Insight said on Wednesday, with higher wholesale costs due to the Iran war expected to wipe out the government's tax cut on electricity bills.

  • The forecast comes after data on Wednesday showed a previous increase in energy bills pushed British inflation ​to a four-month high in July.

Government Measures and Limitations

  • New British Prime Minister Andy Burnham ​said a 5% tax on electricity bills would be removed from October 1 as part of efforts to ease ​cost-of-living pressures, but this does not apply to gas costs which are also included in the price cap.
Impact of Global Events on Wholesale Prices
  • "This increase is being driven by ongoing uncertainty over the U.S.-Iran conflict, with wholesale prices for the coming winter having risen to their highest level in almost four years," Cornwall Insight said.
  • Disruptions to shipping in the Middle East and liquefied natural gas exports from Qatar, one of the world's largest gas exporters, combined with increased demand for power across Europe due to heatwaves, have led to a surge in international gas prices.

Price Cap Projections and Support Schemes

  • Cornwall Insight forecasts energy regulator Ofgem's price cap will rise in October to £1,729 ($2,344) a year for typical use, up £66 from £1,663 in July.
  • A government spokesperson said tackling the cost of living remains a priority for the government which, in addition to the tax cut from October, shifted some levies to cut around £150 from an average bill in April and last year extended the scope of a scheme to support the most vulnerable households called the warm homes discount.

How the Price Cap is Set

  • Wholesale energy prices are the largest single factor contributing to British energy regulator Ofgem's domestic price cap, which is set on a quarterly basis using a formula that also reflects suppliers' network costs and environmental and social levies.
  • Ofgem is expected to publish the next price cap level by August 26.

($1 = 0.7376 pounds)

(Reporting by Susanna Twidale. Editing by Mark Potter)

Key Takeaways

  • Cornwall Insight projects the October Q4 2026 price cap to hit a three‑year high, up ~4 % from July levels, due to elevated wholesale energy prices amid US‑Iran tensions (source: Reuters summary).
  • The planned removal of VAT on electricity from October 1—intended to ease cost‑of‑living pressures—will be broadly neutralized by rising gas and wholesale costs, particularly as the cap includes both electricity and gas components (Reuters; MoneyWeek).
  • Analysts warn that despite VAT relief and prior levy shifts, households face continued pressure this winter, with Ofgem expected to announce the official cap by 26 August (MoneyWeek).

Frequently Asked Questions

Why is Britain's energy price cap increasing in October 2024?
The price cap is rising due to higher wholesale energy costs driven by uncertainty from the U.S.-Iran conflict and disruptions to global gas supplies.
How much is the new energy price cap expected to be?
Cornwall Insight forecasts the cap will rise to £1,729 per year for typical usage, up £66 from July's level.
Will the government's tax cut on electricity bills offset the price cap rise?
No, the higher wholesale costs are expected to wipe out the benefit of the government's 5% tax cut on electricity bills.
What factors does Ofgem consider when setting the energy price cap?
Ofgem sets the cap using wholesale energy prices, supplier network costs, and environmental and social levies.
When will Ofgem announce the next price cap level?
Ofgem is expected to publish the next price cap level by August 26.

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