Solar Panels for Arable Farms UK: Grain Stores, Irrigation & Machinery Charging
By James Whitfield · 3 May 2026
Arable farms are sometimes overlooked in agricultural solar discussions because their energy consumption appears modest compared to livestock and poultry operations. In reality, the combination of large grain store roofing, substantial irrigation pumping loads in eastern counties, and the rapid electrification of agricultural vehicles makes the arable sector one of the fastest-growing solar markets in the UK. Modern arable operations with controlled-atmosphere grain storage, automated grain handling, and large workshop complexes routinely consume 80,000–200,000 kWh annually.
Energy loads on arable farms: where the consumption is
Understanding arable farm energy patterns is the first step to sizing a solar system correctly. Unlike livestock farms with year-round high demand, arable operations have pronounced seasonal peaks that — with careful design — can align well with solar generation.
Grain drying and handling
Grain drying is typically the single largest energy cost on an arable farm. A continuous-flow dryer handling 500 tonnes of winter wheat at 20% moisture consumes approximately 110,000 kWh per harvest. Batch dryers are less energy-intensive but still represent a significant load during August and September. On-floor heated air drying at lower moisture levels consumes 15,000–40,000 kWh per season.
Irrigation pumping
Arable farms in eastern England — particularly in Lincolnshire, Cambridgeshire, Norfolk and Suffolk — use substantial quantities of water for vegetable and combinable crops. A centre-pivot irrigating 100 ha of potatoes may consume 40,000–80,000 kWh during the May–August irrigation season, which corresponds almost exactly to peak solar generation months. This seasonal alignment makes solar particularly effective for irrigated arable enterprises.
Controlled atmosphere grain storage
CA storage for malting barley, seed grain and premium wheat uses nitrogen generation and cooling equipment that runs continuously from harvest until grain is sold, often for 6–9 months. A 2,000-tonne CA store may consume 35,000–55,000 kWh annually on top of handling equipment.
Workshop, office and vehicle charging
Modern arable farm complexes include large workshops with three-phase power tools, welding equipment, compressors and vehicle hoists. EV charging for electric UTVs, tractors and farm vehicles is an emerging load that is growing rapidly as machinery manufacturers introduce electric options.
Grain store roofs: a solar installation opportunity
The large, often flat or shallow-pitch roofs of modern grain stores are among the best solar mounting surfaces in agriculture. A 1,000-tonne grain store with a 40m x 20m footprint offers 800 m² of south-facing roof — enough for a 120–140 kWp system. Structural steelwork on modern portal-frame stores easily supports the panel weight.
Grain store roof survey considerations
Before installation, we check for: ridge orientation (ideally east-west to allow south-facing array), roof pitch (12–22 degrees is ideal, but adjustable mountings work on any pitch), roof sheet condition (fibre cement sheets from before 1999 may contain asbestos), and structural loading capacity. Our surveys include a free asbestos register check and roof condition assessment.
Grain store blog post cross-reference
We have a detailed guide specifically on solar for grain stores covering asbestos considerations, controlled atmosphere store integration and load management — see our grain store solar panels guide for full details.
Solar and irrigation: the ideal seasonal match
For irrigated arable farms in the east of England, solar generation and irrigation demand are almost perfectly aligned. Peak solar output in May–August coincides with peak irrigation season. A 100 kWp solar array in Lincolnshire generates approximately 95,000 kWh annually, with 60–65% occurring during May–September. Paired with a variable-speed drive pump controller, the solar array can directly power irrigation pumping during daylight hours with near-100% self-consumption of daytime generation.
EV agricultural vehicles and farm solar
The electrification of farm machinery is progressing faster than many farmers realise. Electric UTVs are now mainstream, with John Deere, Polaris and Kubota all offering electric models. Electric tractors from Fendt, New Holland and CNH are in commercial production for sub-100hp applications. Solar charging infrastructure for these vehicles makes economic sense now, and positions the farm for the next generation of electric field machinery.
EV charging load management
A solar-integrated EV charging system uses smart load management to charge vehicles preferentially from solar generation, with grid import only when solar output is insufficient. For a farm with 3–4 electric UTVs and 1–2 electric tractors, a 50–80 kWp solar array with a 30–50 kWh battery provides most of the annual vehicle charging energy from solar.
System sizing recommendations for arable farms
Sizing depends heavily on the specific combination of loads. As a general guide: a medium arable unit with grain drying, workshop and offices but no irrigation suits 60–100 kWp. An irrigated vegetable unit in the east suits 100–200 kWp. A large arable estate with CA storage, multiple grain stores and workshop complexes suits 200–400 kWp.
Conclusion
Arable farm solar rewards careful load analysis. The farms achieving the best returns are those where solar generation is matched to real high-demand loads — whether that is irrigation pumping, controlled atmosphere storage or vehicle charging. If your farm has substantial grain storage or irrigated acreage, the case for solar is strong and the available roof area is almost certainly sufficient.
Related reading
- Arable Farm Solar — Our specialist arable farm solar page.
- Grain Store Solar Panels — Solar specifically for grain stores and handling buildings.
- Ground-Mounted Solar Guide — Ground vs roof solar for farms.
- Farm Solar ROI — How to calculate solar ROI on your farm.
- East Anglia Solar Guide — Solar for East Anglian arable farms.
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