How to Switch Energy Tariff Before the Next Price Cap Rise — Step-by-Step
The Ofgem price cap currently sitting at £1,862 a year for a typical dual-fuel household paying by direct debit is about to move again — and most forecasts point up, not down. The next cap, covering...
The Ofgem price cap currently sitting at £1,862 a year for a typical dual-fuel household paying by direct debit is about to move again — and most forecasts point up, not down. The next cap, covering October to December 2026, will be confirmed by 26 August 2026, and analysts at Cornwall Insight expect it to land around £1,899, roughly £37 higher than the current level and about £258 above the April 2026 cap of £1,641. If you're on your supplier's standard variable tariff, that increase lands on your bill automatically. If you switch to a fix now, it doesn't.
Why prices are rising again
The driver, per multiple energy forecasters, traces back to disruption in global liquefied natural gas supply routes following renewed Middle East tensions earlier this year, which pushed up wholesale gas prices that suppliers pass through to the capped tariff. Complicating matters, Ofgem is also updating its "typical consumption values" from October — the assumed usage of its illustrative average household — which means the same October cap could read as roughly £1,709 or £1,899 depending on which consumption assumptions you compare it against. The headline number you'll see reported may vary between sources for this reason.
The one thing that protects you
Only households on a standard variable (price-capped) tariff are exposed to the cap moving. If you fix your tariff now, your rate is locked for the length of the deal regardless of what happens to the cap in October, according to MoneySavingExpert.
Checklist: how to switch before the cap rises
- Find your current tariff type. Log into your supplier's online account or check a recent bill — look for "standard variable," "default," or a named fixed-tariff.
- Get your annual usage figures. Your last bill or annual statement shows your kWh usage for gas and electricity; you'll need this for an accurate comparison rather than the "typical household" estimate.
- Compare fixed deals on a comparison site or directly with suppliers. Look specifically for fixes that beat the current £1,862 cap and stay competitive against the forecast £1,747–£1,899 October range.
- Check the exit terms on any current fix. If you're already on a fixed deal, confirm whether an early exit fee applies before switching again.
- Read the small print on "fixed" deals carefully. Some newer tariffs cap standing charges separately from unit rates — confirm both are locked, not just one.
- Switch before the 26 August confirmation if you want certainty. Waiting to see the exact new cap number means losing any window to lock in ahead of it.
- Set a calendar reminder for your new fix's end date. This avoids automatically rolling onto a supplier's variable tariff when the fixed term ends.
Key Numbers
- Current price cap (July–September 2026): £1,862/year (Ofgem)
- Forecast October–December 2026 cap: £1,747–£1,899/year depending on consumption-value basis (E.ON Next, Cornwall Insight)
- April 2026 cap for comparison: £1,641/year
- Cap confirmation date: 26 August 2026
Sources
- Changes to energy price cap between 1 July and 30 September 2026 — Ofgem
- Energy Price Cap Predictions — E.ON Next
- Predictions & Insights into the Default Tariff Cap — Cornwall Insight
- What is the Energy Price Cap? — MoneySavingExpert
Educational content only — not financial advice.