The wholesale price of gas has fallen by roughly 40% since January 2026, according to data shared by Martin Lewis this week. That is a sharp drop, the kind that usually prompts headlines about cheaper energy bills. But the relationship between wholesale gas and what households actually pay has become anything but straightforward.
As reported by Chronicle Live, Martin Lewis flagged the price drop in his latest update, noting that while the market is moving in the right direction, the benefit to households will be diluted by the way the energy price cap works. Ofgem sets the cap every three months based on a formula that averages wholesale prices over a six-month window. That means the current plunge will only partially feed into the July cap, and even then, it will be spread across all customers.
Who qualifies, and who doesn’t
Every household on a standard variable tariff is covered by the price cap. That is about 22 million homes in England, Scotland and Wales. But the cap does not limit your total bill, it limits the unit price per kWh and the standing charge. So if you use more energy, you pay more. The current cap, which runs from April to June 2026, is set at £1,738 per year for a typical dual-fuel household paying by direct debit. The July cap is expected to fall to around £1,660, according to analysts at Cornwall Insight. That is a saving of about £78 a year, or £6.50 a month.
The catch is that standing charges, which cover network maintenance and policy costs, are not falling. They have risen by 12% since 2024, driven by investment in grid upgrades and social programmes. So even if the unit rate drops, the fixed part of your bill keeps climbing.
What it costs a typical 3-bed semi
Take a 3-bed semi in Manchester using 12,000 kWh of gas and 2,900 kWh of electricity per year. Under the current cap, that household pays about £1,738. Under the expected July cap, it would pay roughly £1,660. That is a saving, but it is less than the headline wholesale drop suggests. The reason: network charges account for about 25% of the bill, and they are not linked to wholesale gas prices. Policy costs, green levies, social schemes, add another 8%. These are fixed or rising.
Ofgem confirmed in its March 2026 consultation that network charges will increase by 3% in October 2026 to fund new interconnectors and battery storage. So the wholesale saving will be partly offset by higher fixed costs. The net effect for a typical household: a real-terms reduction of maybe £50-£60 per year, not the £200 that a straight wholesale fall would imply.
How this affects your EPC rating and long-term costs
An energy performance certificate measures the fabric efficiency of your home, insulation, glazing, heating system. It does not care what the wholesale gas price is today. A home with an EPC rating of D or E leaks heat and costs more to warm, regardless of energy prices. The current gas price drop is temporary. The next spike could come in winter 2026 if a cold snap hits Europe or if LNG supply tightens.
The Energy Saving Trust estimates that insulating a typical 3-bed semi with cavity wall and loft insulation costs about £1,500 and saves around £300 per year at current prices. That saving is locked in. A heat pump, at £7,000-£11,000 installed after the Boiler Upgrade Scheme grant of £7,500, cuts gas use entirely and can reduce annual heating bills by 30-40% compared to a gas boiler. The grant runs until 2028, but applications are processed on a first-come basis.
What this misses is the opportunity cost of waiting. Every month you delay efficiency upgrades, you are paying inflated network charges and policy costs that will not fall. The wholesale price drop gives you a small window of lower unit rates, use it to fund improvements that cut your consumption permanently.
What to do next
Check your current tariff. If you are on a standard variable, you are already under the price cap. Fixed deals are starting to reappear at rates around £1,620-£1,650 per year, but they lock you in for 12 months. If wholesale prices fall further, you could miss out. If they rise, you gain. The smart move: fix only if the rate is below the expected July cap and you want certainty.
For the longer term: book an EPC assessment if you have not had one in the last 10 years. It costs £60-£120 and tells you exactly where heat is escaping. Apply for the Boiler Upgrade Scheme before the grant budget runs out. And check whether you qualify for the Great British Insulation Scheme, which offers free or subsidised insulation for low-income households. The scheme has already helped 150,000 homes but has been slow to process applications. Get your name in now.
Households on standard variable tariffs can compare fixed deals through Ofgem’s accredited comparison sites from 1 July, when the new cap takes effect. Eligibility for the Boiler Upgrade Scheme closes when the £1.8bn fund is exhausted, likely by early 2027. Do not wait for the next price shock to act.
Frequently Asked Questions
Probably, but only by about £50-£80 per year for a typical household. The price cap formula averages wholesale prices over six months, so the full gas price drop will not appear until the October cap review. Fixed costs like standing charges are also rising, which offsets some of the saving.
Only if the fixed rate is below the expected July cap of around £1,660 per year. Fixed deals lock you in for 12 months, so if wholesale prices fall further, you could pay more. Check comparison sites from 1 July when the new cap is confirmed.
