The six largest energy suppliers have told the government that Ofgem is no longer fit for purpose. Their letter, seen by The Guardian, calls for a fundamental overhaul of the regulator’s remit, speed, and cost recovery rules. For the 28 million households paying the price cap, this is not an abstract Westminster debate. It is a dispute about who shoulders the cost of the net-zero transition, and when you will see a heat pump or solar panel connected to the grid without a six-month wait.
As reported by The Guardian, the suppliers, including E.ON, EDF, and Scottish Power, argue that Ofgem’s current structure prioritises short-term price minimisation over long-term investment. Their core complaint: the regulator’s decisions add £50 to £100 to the average household bill each year through delayed grid upgrades and excessive compliance paperwork.
What is actually broken
Ofgem’s statutory duty is to protect consumers, but the firms say that duty has been interpreted too narrowly. The regulator approves network upgrades on a case-by-case basis, each requiring months of evidence and consultation. Meanwhile, grid connection queues have ballooned to 400 GW of projects, enough to power the entire country several times over. Every delay means a heat pump installer cannot connect your house without a costly reinforcement study. Every study adds weeks and hundreds of pounds to your quote.
The catch is that Ofgem’s cautious approach was built to stop the networks from overcharging households. In 2013, the regulator forced the grid companies to return £300 million to customers after finding they had over-recovered costs. That kind of protection matters. But the balance has swung too far. The Energy Networks Association estimates that the current approval process adds 18 months to projects that could otherwise be built in six. For a homeowner waiting on a grid upgrade to install solar panels, that delay can push a project past the summer generation window.
Who qualifies, and who doesn’t
Any reform will affect households differently depending on how you pay for energy. Those on standard variable tariffs, about 70% of homes, currently pay a daily standing charge that includes network costs. The firms want these costs recovered more through unit rates, which would lower the fixed charge but raise the price of each kilowatt-hour. That helps people who use little energy but penalises large families or those with electric heating.
Households with heat pumps or electric vehicles stand to lose from a shift to higher unit rates. They consume more electricity than the average gas-heated home. A typical 3-bed semi with a heat pump uses about 8,000 kWh a year for heating alone. If unit rates rise by 5p per kWh, that adds £400 annually. The firms argue this is fairer because it aligns cost with usage, but consumer groups warn it could worsen fuel poverty for low-income households in poorly insulated homes.
What it means for your next upgrade
The most immediate impact for homeowners considering eco-upgrades is on connection times. Ofgem is currently piloting a streamlined process for low-carbon technologies. If the firms’ call for reform succeeds, that pilot could become the default. The Energy Saving Trust suggests that faster approvals could cut the time from quote to connection for a heat pump from 12 weeks to four. For solar-plus-battery systems, the saving could be similar.
But the reform push also risks a trade-off. Faster approvals mean fewer checks on installer quality and network safety. Ofgem’s own data shows that 8% of heat pump installations inspected in 2023 had defects that reduced efficiency. A regulator focused on speed could let those numbers rise, leaving homeowners with a system that works poorly and costs more to run. The firms say they will self-regulate through the Microgeneration Certification Scheme, but that scheme has no power to force remedial work.
Households on standard variable tariffs can expect to see changes in their standing charges within 12 months if the government accepts the firms’ proposals. The price cap is reviewed every three months, so any shift in cost recovery would appear on your January or April 2026 bill. In the meantime, the best hedge is to reduce your total energy use: insulate first, then electrify. That way, whatever the regulator changes, your bills stay as low as possible.
Frequently Asked Questions
Not directly. The firms claim reform could reduce annual household bills by £50–£100 over time, but those savings depend on faster grid connections and lower compliance costs. Any reduction could be offset if Ofgem shifts network costs from standing charges to unit rates, which would raise bills for high-energy users like heat pump and EV owners.
If the government accepts the suppliers' proposals, changes to cost recovery rules could appear in the price cap within 12 months. The cap is reviewed quarterly by Ofgem, so the earliest impact would be on the January or April 2026 cap announcement.
