Why your energy bill is rising by £111 this autumn

Ofgem will raise the energy price cap by £111 a year for a typical household from 1 October, the third increase in 12 months. That brings the average annual dual-fuel bill to roughly £1,923 for a home paying by direct debit. The news, as reported by The Mirror, lands just as households start switching on their heating, a double hit of higher unit costs and higher consumption.

Why the cap is going up, and who pays

Ofgem’s quarterly adjustment reflects higher wholesale gas prices in international markets, plus a rise in network charges that fund grid maintenance and new infrastructure. The regulator says wholesale costs account for about two-thirds of the increase. Network charges add another £24 or so. Supplier margins remain capped at 1.9% under current rules. But the headline figure masks regional variation: households in the North East of England will see a slightly smaller rise than those in Southern England, because distribution costs differ. The catch is that the cap applies to unit rates and standing charges, not total bills, so homes with higher consumption will pay well above the £111 average.

What it costs a typical 3-bed semi

The typical Ofgem figure assumes a household using 12,000 kWh of gas and 2,900 kWh of electricity a year, roughly a 3-bed semi with two occupants. Under the new cap, the annual bill climbs from £1,812 to £1,923. That’s £160 a month, up from £151. For homes using more, say, a draughty Victorian terrace with four residents, the actual increase could approach £150 a year. Prepayment meter customers face a slightly higher standing charge, adding roughly £10 to the annual total. Ofgem has confirmed the new rates will apply from 1 October to 31 December 2024.

What homeowners can do, and by when

This rise makes the case for energy efficiency upgrades more urgent, but not every measure pays back before winter. Loft insulation (top up to 270mm) costs roughly £300 and can save £100–150 a year, a one-year payback for many homes. Cavity wall insulation, at £500–£1,000, saves £200–£300 annually. But both require installation before November, when temperatures drop and installers get booked up. For larger investments, the Boiler Upgrade Scheme still offers £7,500 off a heat pump, though installation lead times are 8–12 weeks. Smart thermostats and radiator valves, at £150–£300, can cut heating costs by 10–15% with no building work. Energy Saving Trust data suggests combining these measures can offset the entire £111 increase within a single heating season.

Who qualifies for help, and who doesn’t

The Warm Home Discount offers £150 off electricity bills for low-income households, but eligibility is narrow and applications are handled by suppliers. The government’s Great British Insulation Scheme provides free or subsidised insulation for homes in council tax bands A–D with an EPC rating of D or below, but take-up has been slow, with only 40,000 installations completed by mid-2024 against a target of 300,000. Households just above the threshold, earning £31,000 or more, get no direct support. Yet those are often the homes in the worst condition, with solid walls and single glazing. The £111 cap rise will hit them hardest, because their bills are already higher than average.

Households on standard variable tariffs can do little about the cap itself, it applies automatically. But switching to a fixed-rate tariff, if one is offered, can lock in lower unit prices for 12 months. Compare options on Ofgem-accredited sites before 1 October. For those considering major upgrades, apply for the Boiler Upgrade Scheme or Great British Insulation Scheme now: lead times mean approvals take 4–6 weeks, and funding for this financial year is limited.