Heating Oil vs Electric Heating UK 2026 — Which Is Cheaper?

Heating Oil vs Electric — Quick Answer

For UK homes in May 2026:

• Direct electric heating (storage heaters, electric boiler, panel heaters): ~£0.25 per kWh of heat
• Heating oil: ~£0.075 per kWh of heat
• Heat pump (electric): ~£0.07 per kWh of heat

Direct electric is 3-4x more expensive to run than heating oil. But a heat pump (which is also electric, just much more efficient) is comparable to or slightly cheaper than oil.

The simple rule: direct electric heating loses to oil. Heat pumps win against oil if installation costs are factored over 15+ years.

Why Direct Electric Is So Expensive

Direct electric heating converts 1 kWh of electricity into 1 kWh of heat — 100% efficient on paper, but expensive because UK electricity costs £0.22-£0.27/kWh in May 2026.

An oil boiler is 90-94% efficient: 1 litre of kerosene (~10 kWh of energy) produces about 9 kWh of usable heat. At £0.70/litre, that's about £0.075 per kWh of heat.

A heat pump uses 1 kWh of electricity to produce 3-4 kWh of heat (coefficient of performance 3-4). At the same electricity rate, that's £0.06-£0.09 per kWh of heat.

Annual Cost Comparison (Typical 3-Bed UK Home)

For a home needing 12,000 kWh of heat per year:

Storage heaters can be competitive if you only use Economy 7 night-rate electricity and the building heats up by morning. But realistic households use day-rate electricity too, pushing the cost above oil.

When Electric Heating Wins

Electric heating wins for:

• Small flats with low heat demand (under 3,000 kWh/year)
• Holiday homes used only occasionally — no fuel storage needed
• Homes with solar PV + battery — daytime heat from solar is essentially free
• Properties without space for a boiler/tank (small studios, listed buildings)
• Top-up heat in oil-heated homes (a single electric panel in a cold bedroom is cheaper than running the boiler longer)

When Heating Oil Wins

Oil wins for:

• Larger homes with high heat demand (10,000+ kWh/year)
• Off-grid rural homes without mains gas
• Properties with existing tanks and boilers (no replacement cost)
• Cold-climate regions (Highland Scotland, North Pennines) where direct electric heat would be very expensive

Electric Boiler vs Oil Boiler — Specific Comparison

If you're choosing between an electric combi boiler and an oil boiler:

Electric boilers are usually only sensible for small flats where the running cost difference is bearable and the installation simplicity matters. For 2-bed+ homes, the higher annual running cost adds up to thousands over the boiler's life.

What About the Future?

UK electricity is decarbonising — the carbon intensity of grid electricity has roughly halved since 2015. By 2030, a heat pump could be running on near-zero-carbon electricity, while heating oil remains a fossil fuel.

For environmental reasons, heat pumps (not direct electric) are the long-term direction for off-grid UK homes. For cost reasons in 2026, oil still beats direct electric — but loses to heat pumps over 15+ years.

Compare a heat pump install for your home to see the specific numbers.