Energy price cap rises again: what homeowners can actually do

Ofgem will raise the energy price cap to £1,717 from 1 October, an increase of £63 on the current £1,654. That is the third rise this year, and the sixth since the crisis began in 2021. The figure is for a typical dual-fuel household paying by direct debit, but the real number on any given bill depends on usage, region, and payment method.

As reported by the Big Issue, the charity says people are already rationing their energy use, turning off heating in winter, skipping hot meals, or living in one room to save. That is not a lifestyle choice. It is a structural failure of a market that has left millions exposed to volatile wholesale prices.

Who qualifies, and who doesn’t

Ofgem’s price cap applies to households on standard variable tariffs, about 28 million homes. Those on fixed deals are insulated until their contract ends, but fixed rates have also risen sharply. Prepayment meter customers, typically the most vulnerable, pay a similar cap but face higher standing charges in some regions.

The cap itself is a ceiling on unit rates and standing charges, not a bill cap. A 3-bed semi using 12,000 kWh of gas and 2,900 kWh of electricity will pay roughly £1,717 a year. A larger home with electric heating can easily hit £2,500. The gap between the cap and actual bills widens every time usage climbs.

Government support has shrunk. The £400 Energy Bill Support Scheme ended in March 2023. The Warm Home Discount remains at £150, but only for low-income households. The Cold Weather Payment triggers only below zero temperatures in specific postcodes. For most, the only cushion is their own insulation.

What it costs a typical 3-bed semi

Let’s run the numbers. A typical semi-detached house loses about 35% of its heat through the walls and 25% through the roof, according to the Energy Saving Trust. Cavity wall insulation costs £700–£1,500 and saves about £300 a year. Loft insulation costs £300–£700 and saves £200–£300. Together, they can cut the annual heating bill by half, more than the entire price cap rise.

For those who can afford the upfront cost, a heat pump installation now qualifies for the Boiler Upgrade Scheme grant of £7,500. The pump itself costs £10,000–£15,000, so the grant brings it to £2,500–£7,500. Glazing is standard-rated for VAT at 20%. The zero rate for energy-saving materials covers insulation, heat pumps and solar panels; HMRC names secondary and double glazing as excluded (VAT Notice 708/6). Solar panels add another 30% reduction on electricity bills, with a typical 4 kW system costing £5,000–£7,000 and paying back in 8–12 years.

But the catch is upfront cash. The average UK household has less than £2,000 in savings. Grants are the only route for most. The ECO4 scheme covers insulation and heating upgrades for low-income and vulnerable households. The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing. Both are administered by energy suppliers, and waiting lists are long.

What the government isn’t telling you

Ofgem’s own data shows that network charges account for about 25% of the typical bill, roughly £430 a year. These are fixed costs that rise with inflation, not with energy use. The regulator has resisted calls to shift network costs into general taxation, which would cut bills by 20% overnight. Instead, it has approved a 12% rise in network charges for 2024–25.

Meanwhile, the Energy Profits Levy on oil and gas producers is set to fall from 35% to 33% in November 2025, despite record profits at Shell and BP. The levy raised £2.6 billion in its first year, but the Treasury has not ringfenced that money for household energy support. The contrast is stark: billions in tax relief for fossil fuel companies, while families ration their heating.

The real solution is not more rationing. It is a national retrofit programme that insulates every home by 2030. The Climate Change Committee says that would cost £5,000 per home on average, but save £1,000 a year in bills. The payback is five years, faster than any energy efficiency measure in the private market. Yet the government’s own Heat and Buildings Strategy has no binding target for home insulation, and the Boiler Upgrade Scheme has been undersubscribed due to low awareness.

What you can do now

The Great British Insulation Scheme closed on 31 March 2026. It funded insulation measures only and never covered windows or glazing. If you own your home and have a household income under £31,000, you likely qualify for fully funded insulation. If not, loft insulation is the cheapest DIY upgrade: rolls cost £20–£30 per m² at B&Q, and you can install it yourself in a weekend.

Second, get a quote for a heat pump under the Boiler Upgrade Scheme. The grant is available until March 2027, and the £7,500 is deducted from the installation cost by the installer. You do not need to apply upfront, the installer handles the paperwork. Third, compare tariffs on Ofgem’s accredited comparison sites. Switching to a fixed deal now could lock in a rate below the October cap for a year.

Households on standard variable tariffs can apply through gov.uk from 1 October. Eligibility closes on 31 March 2027. Do not wait until winter, insulation work takes weeks to schedule, and heat pump installations have a 6–8 week lead time. The price cap is going up. Your bills do not have to.