The comparison in 2026
UK farms with significant heating demand (poultry brooding, pig finishing, dairy parlour washdown, livestock building heating) sometimes consider biomass boilers as an alternative to solar PV.
Detailed comparison
Biomass: provides direct heat for high-temperature applications where solar PV's electrical output can't easily substitute; typical capex £30,000-£150,000 for commercial farm biomass boilers; fuel cost is the biggest ongoing expense (wood chip, pellets, or on-farm waste); Renewable Heat Incentive closed to new applications in March 2022 — current biomass installations don't benefit from RHI support; significant ongoing maintenance and fuel-handling labour. Solar PV: provides electrical generation; capex £700-£950/kW; minimal ongoing costs after install; SEG export income on surplus; 25-year asset life. Hybrid biomass + solar PV: increasingly common — biomass handles heat-intensive loads; PV handles electrical baseload; both contribute to Scope 2 reduction targets. For most UK farms in 2026 where the primary demand is electrical (dairy parlour cooling, livestock ventilation and lighting, grain drying), solar PV is the more economic choice. Biomass remains the answer for direct-heat-intensive applications.
How to decide for your farm
The right answer depends on the farm's specific electrical and heat demand profile, available capital, planning context, and long-term strategic priorities. We model multi-technology scenarios as part of any farm feasibility study where the farm is considering more than just solar PV. Send us your half-hourly meter data, fuel-use history, and a brief on planned operational changes — we deliver a multi-technology comparison within 10 working days.
For most UK farms in 2026 with primarily electrical demand, solar PV is the clear winner on speed-to-commissioning, planning simplicity, and payback. Other technologies (wind, biomass, heat pumps, AD) make sense in specific scenarios. The hybrid case — solar PV plus complementary technology — is increasingly common as farms decarbonise both electrical and heat-intensive operations.
Common questions
Can we install solar AND wind?
Yes — hybrid solar+wind is increasingly common on larger holdings. The technologies complement each other (solar peaks during day with high irradiance; wind generates throughout day and night based on wind conditions). Combined hybrid economics are usually stronger than either technology standalone for farms with appropriate scale.
Which technology has the easiest planning approval?
Solar rooftop PV on agricultural buildings — typically Permitted Development under Class A Part 14 GPDO 2015. No formal planning permission required for most installations. Wind, biomass, and AD all typically require full planning permission.
Does solar work for high-temperature heat applications?
Solar PV generates electricity; for high-temperature heat (above 80°C — beyond heat pump capability), direct heat technologies (biomass, gas, oil) are more economic. For typical farm heat applications (60-80°C — dairy parlour washdown, building space heating), solar PV + heat pump combination is increasingly the standard approach.
What's the simplest farm decarbonisation route in 2026?
For most UK farms, the simplest route is: 1. Rooftop solar PV on farm buildings (covers electrical baseload). 2. Battery storage if seasonal/peak demand mismatch (covers operational timing). 3. EV charging infrastructure for farm fleet (replaces diesel). 4. Heat pump for any direct-heat applications. This sequence delivers strong economics, planning simplicity, and progressive decarbonisation.