Should you fix your energy deal for winter 2026?
The October cap is confirmed: up 4% to £1,723, with gas doing the rising and a VAT cut muddying the comparisons. Here’s what’s actually changing and an honest way to decide — from a site with no switching commissions to earn.
TL;DR
Fixing is worth it if the fix’s unit rates beat the October cap for your real usage (gas rates matter most this winter) and exit fees are small — you’re buying certainty through the expensive January quarter. Compare unit rates and standing charges, never headline percentages, and mind the VAT quirk: electricity is VAT-free from 1 Oct, so quotes straddling that date can mislead. And whatever the tariff: fewer units beats a better rate — see the running-costs guide.
What’s happening on 1 October
Ofgem confirmed on 26 August that the price cap for October–December 2026 rises about 4% — £1,723 a year for a typical dual-fuel direct-debit household, up £60. The rise is uneven: gas is up roughly 8% (wholesale prices, driven by the Middle East conflict) while electricity is broadly flat. From 1 October the average capped electricity unit rate is about 26.3p/kWh with a 54.8p/day standing charge, and gas about 8p/kWh — your exact rates vary by region and payment method.
One thing that will make October’s numbers confusing: VAT on domestic electricity drops from 5% to 0% from 1 October to 31 March 2027 (gas keeps its 5%). That makes before/after comparisons and some fixed-deal quotes tricky to read — always compare the actual unit rates and standing charges, never the headline “save X%”.
So… fix or stay on the cap?
The case for fixing now: winter certainty. The next cap announcement lands 25 November and takes effect 1 January — historically the most expensive quarter — and wholesale gas has been rising. A fix priced below the October cap locks that out. The case against: if wholesale falls, the cap falls with it in January and April while your fix doesn’t, and exit fees (£25–£75 per fuel is typical) tax the escape.
The honest checklist: 1) Get your annual kWh usage for both fuels off your latest bill or app — comparisons without your real usage are noise. 2) Compare any fix’s unit rates and standing charges against the October cap rates above, fuel by fuel. 3) Check the exit fee — a cheap fix with a £150 dual-fuel exit fee is a bet, not a saving. 4) Because this winter’s rise is a gas story, a fix that undercuts on gas matters more than one that shaves electricity. 5) If you have a smart meter and can shift usage (that heated airer overnight, EV charging), tracker and time-of-use tariffs can beat both — but only if you actually look at the rates.
Whatever you decide about the tariff…
The bigger lever is using fewer units. The whole playbook is on this site: what everything costs per hour (and the warm-the-person-first ordering), electric blankets that make an 18°C thermostat comfortable, £30 of draught-proofing, and a 1°C thermostat drop worth £80–£100 a year. A household doing all four typically saves more than any tariff switch on the table.
Rates quoted are the Ofgem average direct-debit cap figures for 1 Oct–31 Dec 2026 and change quarterly — check ofgem.gov.uk for the current numbers and your region. We don’t sell energy or take commission from any supplier or switching site; this page is context, not financial advice.
Frequently asked questions
What is the energy price cap from October 2026?
£1,723 a year for a typical dual-fuel direct-debit household — up 4% (£60). Average unit rates: electricity about 26.3p/kWh plus 54.8p/day standing charge (now VAT-free), gas about 8p/kWh. The cap limits unit rates, not your total bill.
Why has gas gone up more than electricity?
The October rise is driven by wholesale gas costs amid the Middle East conflict — gas bills rise about 8% while electricity is broadly flat, helped by the temporary VAT cut on electricity.
Should I fix my energy deal before winter?
Fix if a deal's unit rates and standing charges beat the October cap for your actual usage and the exit fees are modest — you're buying certainty through the expensive January quarter. Stay variable if you'd rather keep the option of the cap falling in 2027.
When is the next price cap announcement?
25 November 2026, covering January to March 2027 — typically the most expensive quarter. The electricity VAT zero-rate is currently due to end 31 March 2027.