UK Heating Costs May 2026: Which Fuel Offers Best Value Now?
With mains gas at 6.04p/kWh and heating oil at 105p/litre, we compare your options to help you cut bills this summer.
The current energy landscape offers homeowners a genuine choice—but only if you know where to look. With the Ofgem price cap holding mains gas at 6.04p/kWh and electricity at 24.5p/kWh, plus heating oil sitting at 105p/litre, the gap between fuels has widened enough to make a real difference to your annual costs.
Where Your Money Goes
For a typical three-bedroom home, your heating fuel choice matters more than ever:
- Mains gas remains the cheapest option for most UK households, at 6.04p/kWh under the current Ofgem cap
- Heating oil costs roughly 17.3p/kWh equivalent—nearly three times the price of gas
- Electricity at 24.5p/kWh is expensive for direct heating but unavoidable for other appliances
- Wood pellets at 7.2p/kWh offer a competitive alternative if you have a suitable boiler
If you heat with oil and switch to mains gas, you could save thousands annually—but only if mains is available in your area.
The Prepayment Meter Lesson
Recent industry scandals serve as a reminder: shop around and verify your supplier's practices. The British Gas prepayment meter scandal shows that even major providers can take shortcuts. This May, take time to:
- Check you're on the best mains gas tariff available to you
- Request a quote if switching suppliers—don't assume your current deal is competitive
- Ask your supplier directly about their meter practices and billing accuracy
What to Do Now
Summer is the best time to switch heating fuels or suppliers, when installers have shorter lead times and you can negotiate without winter urgency. If you use heating oil, compare alternatives on our oil comparison tool to see what's available. For mains gas customers, check the latest gas rates and confirm you're not overpaying.
Renewable options like wood pellets deserve serious consideration if you're installing a new boiler. At 7.2p/kWh, they're only marginally pricier than gas and could insulate you from future price spikes.
Plan Ahead
Energy prices shift with wholesale costs and seasonal demand. Lock in a better deal now rather than waiting until October, when winter demand pushes prices higher. Even a modest saving of 10% on your annual heating bill adds up to £100–£300 depending on your fuel and usage.
Your heating fuel choice is one of the few cost decisions you can actually control. Use that power.