Ofgem’s energy price cap rises by £63 tomorrow, the third quarterly increase since October 2024. For a typical 3-bed semi using 12,000 kWh of gas and 2,900 kWh of electricity, that means an extra £5.25 a month on the direct debit, taking the annual dual-fuel bill to roughly £1,849. The cap has now risen three times in a row, erasing most of the falls seen in mid-2024.
The question on every homeowner’s mind is whether to lock in a fixed deal now, or wait for the October cap announcement. As reported by This is Money, analysts at Cornwall Insight expect the cap to fall by about £70 in October, but the outlook remains uncertain, wholesale gas markets are volatile, and geopolitical risks could push prices back up.
Should you fix your energy tariff now?
Fixed tariffs have started reappearing after a long absence. The cheapest deals are currently around 5% above the April cap, roughly £1,940 a year for a typical household. That premium buys you 12 months of protection from further cap rises. But if the October cap does fall by £70, you’d be paying roughly £90 more than someone on the variable tariff for the winter months.
The catch is that forecasts are just forecasts. The October cap could fall less, or rise again, if gas prices spike. The Energy Saving Trust advises that fixing is worth considering if you value stability and can find a deal with no exit fees. But for most households, staying on the variable cap and using the summer to cut consumption is the lower-risk bet.
What the price cap means for your EPC and eco upgrades
Rising energy prices make every kilowatt-hour saved more valuable. A typical 3-bed semi with an EPC rating of D could cut its annual bill by £300–£600 by upgrading to Band C, through loft insulation (£300–£500), cavity wall insulation (£500–£1,500), or draught-proofing (£100–£300). The Great British Insulation Scheme offers grants for low-income households, but even full-price work pays back in 3–5 years at current rates.
Solar panels add another layer. A 4 kW system on a south-facing roof can generate about 3,500 kWh a year, saving £400–£600 on electricity bills at current unit rates. With the Smart Export Guarantee paying 5–15p per kWh exported, payback is typically 8–12 years. For households planning to stay put for a decade, that’s a hedge against both price cap rises and inflation.
Heat pumps are a bigger investment, £7,000–£13,000 after the Boiler Upgrade Scheme grant of £7,500, but they cut heating bills by 20–40% compared to a gas boiler, and they improve EPC ratings by one to two bands. The grant is confirmed until 2028, but applications are capped at 50,000 per year, so early action matters.
What to do by when
Households on standard variable tariffs should do nothing until October, unless they find a fixed deal with no exit fees and a premium under 5%. Those with expiring fixes should switch to the variable cap immediately, then reassess in September when October cap forecasts firm up.
For anyone considering eco upgrades, the window for summer installation is now. Heat pump installers are booked 8–12 weeks ahead, and solar panel lead times are 4–6 weeks. Starting the process in April means you’ll have the work done before winter, when the savings matter most. Check eligibility for the Boiler Upgrade Scheme and Great British Insulation Scheme on gov.uk, both have limited funding and strict deadlines.
Frequently Asked Questions
For most households, waiting until October is safer. Fixed deals currently sit about 5% above the April cap, and forecasts suggest the cap could fall by £70 in October. If you value certainty and can find a deal with no exit fees, fixing at a small premium may be worth it, but you risk overpaying if the cap drops.
A typical 3-bed semi upgrading from EPC D to C can save £300–£600 a year through insulation and draught-proofing. Solar panels can save £400–£600 annually, and a heat pump can cut heating bills by 20–40%. Combined, these measures can reduce your exposure to price cap rises significantly.
