Wood Pellets Emerge as UK's Cheapest Heat Option at 7.2p/kWh
As mains gas hits 6.04p/kWh, biomass heating quietly outperforms all major fuel types. Here's why more homeowners should consider the switch.
The UK heating market is experiencing a quiet shift. While most homeowners focus on gas and electricity prices, wood pellets have become the standout value option at just 7.2p/kWh—undercutting mains gas by nearly 1p per unit.
This matters more than ever. With heating oil at 97.8p/litre and electricity at 24.5p/kWh, UK homeowners face a widening gap between cheap and expensive heating methods. Pellet boilers are no longer niche; they're becoming a practical economics play.
Why the Numbers Stack Up
The cost advantage is clear:
- Mains gas: 6.04p/kWh (Ofgem cap)
- Wood pellets: 7.2p/kWh
- Electricity: 24.5p/kWh
- Heating oil: approximately 11-12p/kWh equivalent
For a typical household burning 15,000 kWh annually for heating, switching from gas to pellets saves roughly £150–£200 per year. That compounds significantly over a boiler's 15–20 year lifespan.
The Catch: Upfront Investment
Don't rush. Pellet boilers cost £6,000–£12,000 installed, against £2,000–£3,500 for a new gas boiler. You're betting on long-term savings and fuel price stability. The Boiler Upgrade Scheme still offers £5,000 grants for biomass installations in England and Scotland—worth checking if you qualify.
Storage is another reality check. Pellets require dry space for bulk storage, and delivery logistics vary by region. Urban properties and flats often hit dead ends here.
Who Should Act Now
Pellets make most sense if you:
- Own a detached or semi-detached home with storage space
- Currently heat with oil (immediate savings of 3–5p/kWh)
- Plan to stay in your property for 10+ years
- Have access to reliable local pellet suppliers
- Can claim the Boiler Upgrade Scheme grant
What To Do Next
If you're in an oil-heated property, compare heating oil prices to see your current real cost, then get a formal quote from 2–3 certified biomass installers. Ask specifically about pellet supply chains in your area—rural homeowners typically have better options than those in cities.
For everyone else, compare mains gas and electricity tariffs first. Gas remains the baseline for most UK homes, and there's often 10–15% annual savings available just by switching suppliers within the Ofgem cap.
Wood pellets aren't a silver bullet. But for the right household, they represent the cheapest heating option available in 2026—and that's worth a serious conversation with your surveyor.