Reacting to BBC News’s report, published the morning of Wednesday 30 September 2026, that energy consultancy Cornwall Insight has forecast the January 2027 price cap at £1,999 a year — a 16% rise on the £1,723 Ofgem confirmed for 1 October 2026 — here’s our view before the detail. This number is not yet real, and treating it as either a certainty or a non-event is the wrong response. It’s a forecast from a consultancy with a genuinely strong track record, built on gas markets that are still moving, and Ofgem won’t confirm the true figure until late November. But several of the things worth doing about a possible £276 rise — building a buffer, weighing up a fix, getting support arranged — take weeks to work, not days. Waiting for the confirmed number before you start is waiting until it’s too late to do much except absorb it.
Some of the framing around this forecast deserves a raised eyebrow, not automatic agreement. EDF’s chief executive Simone Rossi told the BBC the UK is “walking into a second significant energy crisis” — but he said it while asking the government to extend the electricity VAT cut beyond April and approve two new gas fields, so that’s a supplier boss making a commercial case, not a neutral referee. Prime Minister Andy Burnham was more careful, speaking from the Labour conference in Liverpool: he called the cost of home energy “very difficult indeed” and said the government is “looking at any measure” to help, which describes a problem rather than a policy. The steadier voice is Adam Scorer of the fuel poverty charity National Energy Action, who wants the Budget to deliver “additional targeted support for households most at risk this winter, alongside action to tackle energy debt” — worth taking seriously given Ofgem’s own data shows households already collectively owe more than £5bn in unpaid energy bills and charges, before this forecast rise has even happened.
The two numbers, side by side
- 1 October to 31 December 2026 (confirmed by Ofgem): £1,723 a year — about £143.58 a month if it were spread evenly.
- 1 January to 31 March 2027 (forecast by Cornwall Insight, not yet confirmed): £1,999 a year — about £166.58 a month if it were spread evenly.
- The difference: £276 a year, or about £23 a month, or £5.31 a week — a 16.0% rise, and the biggest single jump in the cap for four years if it lands as forecast.
Ofgem confirms the real figure in late November 2026. Until then, £1,999 is Cornwall Insight’s estimate, not a bill.
What £23 a month actually does to a real budget
“£23 a month” is an easy number to read past. Set against an illustrative household’s actual monthly numbers, it’s more concrete.
Illustrative figures only, built to show the shape of the impact — not a claim about any real family.
Combined take-home pay: £2,650 a month
Rent or mortgage: −£950
Food and household shop: −£480
Transport: −£220
Insurance, phone and subscriptions: −£140
Energy Direct Debit at October’s confirmed rate: −£143.58
Left over before any January rise: £716.42
If the supplier resets the Direct Debit to the £166.58 monthly-equivalent of the January forecast:
Left over after the rise: £693.42 — a fall of about 3.2% in what’s actually left at the end of the month, from one line moving.
That 3.2% understates the real squeeze, because a Direct Debit smooths the year into equal payments while gas use doesn’t work that way — a home heats far more in December, January and February than it does in June. If a supplier rebases your Direct Debit to the new annual average without checking your actual winter usage, the smoothed monthly figure can still leave you short in the coldest months even though the yearly maths adds up. That’s the argument for acting on the forecast now rather than the confirmed number in December: get your own Direct Debit built on your real last-winter usage, not an averaged guess, and you find out in October whether there’s a gap to plan for — not in February when the bank balance already shows it.
Why Cornwall Insight thinks this is coming
The forecast isn’t about UK policy. Cornwall Insight attributes the rise to disrupted gas supplies from the conflict in the Middle East, which has left gas storage levels across Europe unusually low heading into winter. Rebuilding those stocks is pushing wholesale gas prices higher, and the forecaster warns that high bills could persist “well beyond the winter” if storage isn’t rebuilt quickly. Craig Lowrey, Cornwall Insight’s principal consultant, put it plainly: “These prices are going to hit households hard. January is already a difficult month for many, with cold weather and bank balances still recovering from Christmas.” He called a January rise “all but certain”, even while cautioning the exact size can still move — an easing of Middle East tensions could soften it, though the price-setting window for January is already half over.
Three things worth doing before Ofgem confirms anything
- Get on the Priority Services Register now, not when a rise lands. It’s free, and it gives extra support — from advance warning of planned work to tailored communication — if you’re older, disabled, chronically ill, pregnant, have young children, or are otherwise vulnerable to a bill shock. Both your energy supplier and your network operator hold separate registers, so sign up through your supplier directly or via the national hub at thepsr.co.uk to cover both.
- Check whether the Warm Home Discount applies to you this winter. It’s a one-off £150 off your electricity bill, usually applied automatically if you qualify in England and Wales, though people in Scotland may need to apply through their supplier. £150 against a possible £276 rise is real money.
- If your supplier proposes a new Direct Debit, ask what it’s based on. If it’s an averaged forecast rather than your own recent winter usage, ask them to recalculate it using your actual kWh from last December to February, priced at October’s confirmed rates as a floor. That tells you today whether £23 a month covers it or whether you need more set aside before the cold arrives.
If winter bills are already frightening, do this part first. Speak to your supplier before you miss a payment rather than after — suppliers have obligations to offer affordable repayment arrangements, and that conversation is far easier while the account is current. And get free, independent help the same week from MoneyHelper, StepChange or National Debtline. Our money worries page lists all three with direct links. Coaching is the right tool for planning a winter; it’s the wrong tool for an emergency this week.
What is still uncertain, and when you’ll know
Three things are genuinely open. First, Ofgem doesn’t confirm the real 1 January to 31 March 2027 cap until late November 2026, so £1,999 could still move in either direction before then — Cornwall Insight has a strong track record, but a forecast is a forecast. Second, whether the war-driven gas disruption behind this forecast eases or deepens over the next two months will decide how close £1,999 turns out to be; nobody can call that yet. Third, the government hasn’t said whether it will extend the electricity VAT cut beyond its current end date of 31 March 2027, which is a separate lever that could soften or fail to soften whatever Ofgem confirms — that decision is expected to surface around the Budget.
What isn’t uncertain is the direction of travel: a forecaster with a strong record is calling a rise “all but certain”, the underlying driver is an international gas shortage that doesn’t resolve on a UK timetable, and the actions that help — a Priority Services Register signup, a Warm Home Discount check, a Direct Debit built on real numbers — cost nothing and take an evening between them. Do those now. Read how October’s confirmed rise actually broke down by fuel for the numbers behind where you’re starting from, and revisit this page in late November when Ofgem’s real figure replaces Cornwall Insight’s forecast.