Wood Pellets vs Gas: Why 2026 Makes the Efficiency Case Clear
At 7.2p/kWh, wood pellets now cost less than a third of mains gas. Here's how to decide if biomass heating suits your home.
The price gap between heating fuels has never been starker. Mains gas costs 6.04p/kWh under the current Ofgem cap, but wood pellets deliver the same heat for just 7.2p/kWh — and that advantage grows when you factor in efficiency ratings and long-term supply stability.
For homeowners not yet locked into gas infrastructure, this is a pivotal moment to reassess your heating strategy.
The Numbers Don't Lie
A typical household burning 10,000 kWh of heat annually would spend roughly £604 on mains gas. The same output from wood pellets costs £720 — a modest £116 premium. But that calculation changes dramatically when you consider:
- Boiler efficiency: Modern pellet boilers operate at 90%+ efficiency, versus 85-88% for gas condensing units
- Maintenance costs: Gas boilers require annual servicing; pellet systems need quarterly cleaning
- Supply volatility: Global oil and gas markets remain vulnerable to geopolitical shocks (as Ukraine–Russia tensions continue to demonstrate), while sustainably managed timber remains domestically available
Who Should Switch?
Wood pellets make strongest sense if you:
- Live in a rural property without mains gas access
- Have space for an outdoor hopper or indoor storage (typically 1-2 cubic metres)
- Plan to stay in your home for 10+ years to recoup installation costs (£8,000–£15,000 for a full system)
- Are comfortable with quarterly ash removal and occasional maintenance
If you're in a terraced urban home with limited space, mains gas remains the practical baseline. If you're curious about hybrid systems combining gas with renewable top-up, now is the time to explore options.
The Efficiency Edge Beyond Price
Pellet heating's real appeal lies in predictability and resilience. Unlike fossil fuels, timber supply chains are less vulnerable to international pipeline disruptions. Wood also qualifies for renewable energy incentives in some regions, potentially offsetting capital costs over seven years.
Electricity remains the premium option at 24.5p/kWh — viable only with heat pump systems that can deliver 3–4 units of heat per unit of electricity consumed.
Next Steps
Start here: Get a free survey from a heating engineer accredited by the Heating Equipment Testing Association (HETA). They'll assess your property's thermal envelope, storage space, and whether pellet, gas, oil, or hybrid solutions suit your circumstances. Cost: usually £150–£200, often waived if you proceed.
Then compare live wood pellet prices in your postcode and request quotes from at least three installers. The decision isn't just about pence per kilowatt — it's about locking in stable, resilient heating for the next decade.
Geopolitical uncertainty and supply chain fragility are no longer abstract concerns. Building heating independence, even at modest extra cost, is becoming prudent household strategy.