Energy Price Cap Set to Rise Again in October 2026 — What Suppliers Are Predicting

Households are being warned to prepare for another increase to the energy price cap this autumn, with major suppliers now forecasting the October-to-December level will land around £1,747 for a typical dual-fuel household paying by Direct Debit.

Where the cap stands now

The current cap, covering 1 July to 30 September 2026, was set by Ofgem at £1,663 for a typical household under its updated consumption assumptions — a 13% jump from the previous quarter. On a standard variable Direct Debit tariff, that works out at roughly 26.11p per kWh for electricity and 7.33p per kWh for gas, plus daily standing charges of 57.19p and 29.04p respectively.

What's predicted for October

Ofgem will formally announce the October-to-December cap by 26 August 2026, but supplier forecasts are already circulating. Both E.ON Next and Sainsbury's Energy are currently predicting a level of around £1,747 — an increase of roughly £84 on the current quarter, driven primarily by wholesale gas and electricity costs, which remain the biggest single factor in how the cap is calculated, alongside network charges and policy costs.

It's worth being clear about what the cap actually caps: it's a limit on the unit rate and standing charge you're charged on a standard variable tariff, not a cap on your total bill. If you use more energy, you pay more, regardless of where the cap sits.

Why this keeps happening

Wholesale energy prices have stayed volatile through 2026, partly linked to geopolitical tension in the Middle East that has periodically pushed oil and gas prices higher, as reflected in this week's market moves reported by Sunday Guardian Live. Ofgem reviews the cap every three months to reflect these swings, which is why bills can jump noticeably between quarters even without any change in your own usage.

Checklist: how to prepare before October

• Check if you're on the standard variable tariff. If so, you're directly exposed to the next cap change — compare fixed deals now via Ofgem's supplier switching guidance or a comparison tool.
• Submit a meter reading just before any cap change takes effect, so your bill accurately reflects usage under the old and new rates.
• Check eligibility for support schemes, including the Warm Home Discount and Winter Fuel Payment, both detailed on GOV.UK.
• Review your direct debit amount. Suppliers often adjust this ahead of a cap change — query it if it jumps by more than the percentage increase in the cap itself.
• Improve efficiency where you can. Draught-proofing and turning down flow temperature on combi boilers are low-cost measures highlighted by MoneySavingExpert that reduce consumption regardless of unit rates.
• Consider a fixed tariff carefully. Fixed deals can offer certainty, but check the exit fees and compare the fixed rate against the current cap and predicted future levels before switching.

How the UK compares internationally

Unlike the UK's regulator-set price cap, most US states rely on state utility commissions to approve rates rather than a single national cap, with significant regional variation tracked by the US Energy Information Administration. EU member states largely deregulated retail energy markets years ago, though several, including France, retain regulated tariffs for a portion of households via EDF. Australia uses a "Default Market Offer" in several states, reviewed annually by the Australian Energy Regulator, a broadly similar concept to the UK's cap but updated far less frequently.

Key Numbers

• £1,663 — current price cap for a typical household, July–September 2026
• £1,747 — predicted price cap for October–December 2026
• 13% — increase in the cap between the previous and current quarter
• 26 August 2026 — date Ofgem will confirm the October cap

Sources

• Ofgem: Changes to energy price cap between 1 July and 30 September 2026
• E.ON Next: Energy Price Cap Predictions and Insights
• MoneySavingExpert: What is the Energy Price Cap?

Educational content only — not financial advice.