The price cap will rise by £63 in October, the third increase this year, adding £189 to the typical household’s annual energy bill since January. That is the concrete cost of a market that, as the Observer argues this week, is in need of a fundamental overhaul. For UK homeowners, the question is not whether reform matters but how much longer they will pay for its absence.
As reported by The Observer, the current system links electricity prices to the cost of gas, even though over 40% of UK electricity now comes from renewables. That mismatch costs households. Ofgem data shows the wholesale gas price still determines roughly half of a typical electricity bill. The result: when gas spikes, every kilowatt-hour of renewable power becomes artificially expensive.
What market reform means for your bill
The Observer’s editorial calls for a break from this ‘marginal pricing’ model, where the most expensive generator sets the price for all. In practice, that means electricity costs about £100 a year more per household than it would under a system that paid renewables their true cost, according to estimates cited by the Energy and Climate Intelligence Unit. For a 3-bed semi using 3,500 kWh of electricity annually, that is a 10-12% premium.
But reform is not simple. Ofgem has proposed a ‘locational pricing’ system, where electricity costs vary by region, but that could mean higher bills for northern and Scottish homes, which are far from wind farms. The government’s review of electricity market arrangements (REMA) has stalled on this very point. The catch is that any overhaul takes years and faces fierce lobbying from generators who profit from the status quo.
What homeowners can do while the market stalls
Waiting for Westminster to act is expensive. The Energy Saving Trust estimates that a typical semi-detached home can cut energy use by 25% with loft insulation (costing £300-£500) and cavity wall insulation (£500-£1,500). Those measures pay back in 2-4 years and improve an EPC rating from D to C, which adds an average of 5% to property value, according to Nationwide.
Solar panels are another hedge. A 4kW system costs around £5,000-£6,000 and can cut electricity bills by 40-60%, depending on usage and export tariff. The Smart Export Guarantee pays around 15p per kWh exported, but that rate is set by the market, another reason reform matters.
Heat pumps, despite higher upfront costs (£7,000-£13,000 after the Boiler Upgrade Scheme grant of £7,500), can cut heating bills by 20-30% compared to gas boilers in well-insulated homes. The grant is available until 2028, but applications must be made through certified installers.
Who pays for inaction
The Observer’s argument is that the cost of not reforming the market falls hardest on the least efficient homes, typically older, draughty properties in lower EPC bands (D-G). Those homes already pay a ‘fuel poverty premium’ of about £200 a year more than efficient homes, according to Ofgem. Market reform would cut that premium by roughly half.
Yet the government’s own net-zero plans rely on electrification of heat and transport. If electricity stays linked to gas prices, the transition becomes politically toxic: voters asked to swap a gas boiler for a heat pump that costs more to run. The 2024 election manifestos all promised action, but no legislation has been tabled. The clock is ticking.
Households can act now: check your EPC rating at gov.uk, book a free energy advice call from the Energy Saving Trust, and compare tariffs at Ofgem-accredited sites. The next price cap review is in February 2025. Don’t wait for that to be the next shock.
Frequently Asked Questions
The market sets electricity prices based on the most expensive gas plant running at any time, even when most power comes from cheap renewables. This adds roughly £100 a year to a typical household bill. Reform would decouple electricity from gas prices, reducing costs.
Improve your home's EPC rating with insulation (loft or cavity walls), install solar panels or a heat pump with available grants, and switch to a fixed tariff. These steps can reduce bills by 20-40% and add value to your property.
