Livestock Farms (Beef/Sheep/Pig/Poultry): Solar panels for agriculture

Livestock units: large simple roofs and real, year-round loads

Livestock is one of the most rewarding parts of agriculture for solar because the buildings are large, structurally simple and often well suited to PV, and the loads are genuine. The sector spans a wide range, from low-baseload beef and sheep enterprises to intensive pig and poultry units with very high year-round demand, and solar fits across that range with the right design. The strongest case is the modern poultry or pig shed: these carry huge clear-span roofs and run ventilation, heating and lighting almost continuously, so an array sized to that daytime load can use most of its output on site, which shortens the payback. Free-range egg and broiler operations align especially well with the summer solar peak, when long daylight hours and high ventilation demand coincide. At the other end, beef and sheep farms with modest building demand often do better with a ground-mount or a shared model than a rooftop array. The point that holds across agriculture is that livestock buildings give you scale and simplicity, two things solar rewards.

As everywhere in farming, energy is a controllable cost in a sector where output prices are set elsewhere, and assurance schemes and retail buyers increasingly reward evidence of on-site renewable generation. For an intensive unit feeding a supermarket contract, that auditable Scope 2 reduction is worth having as part of the holding's wider sustainability position, not just as a line on the electricity bill. Pig units carry high heating loads in cold months and ventilation through the summer, so demand is meaningful year-round, while poultry sheds run ventilation almost constantly; in both cases the economics tend to be excellent because the building is using power at the same time the panels are making it.

There is a useful seasonal alignment too. Free-range egg and broiler operations run their heaviest ventilation loads through the warm months, which is exactly when solar generation peaks, so the summer surplus that would be wasted on a low-demand site is instead absorbed by the very demand the heat creates. That coincidence of supply and demand is part of why poultry economics are so strong. Beef and sheep enterprises sit at the other end of the spectrum, with demand concentrated in winter housing, and for those the answer is more often a smaller rooftop array, a ground-mount that serves the whole holding, or a shared arrangement, rather than a large roof that would export most of its output at the lower rate.

What a typical system looks like and how it should be sized

Livestock systems typically sit in the 20 to 300 kW range, roughly 37 to 550 panels over 120 to 1,800 square metres of shed roof, generating around 16,000 to 300,000 kWh a year (800 to 1,000 kWh per kW installed) and avoiding roughly 2 to 39 tonnes of CO2e at the 2026 UK grid factor of 0.131 kg per kWh. Sizing follows the building and its real demand. A clear-span broiler shed with constant ventilation justifies a larger system sized for self-consumption, while a beef yard with modest demand is better matched to a smaller array or a ground-mount that also serves other parts of the holding. Ask the installer to work from your half-hourly data so the system tracks what the unit genuinely draws across the day and the year rather than an optimistic maximum, and for intensive units to pay close attention to the ventilation and heating profile that drives the load.

The contrast within the sector is worth dwelling on, because it changes the design. An intensive poultry or pig unit has a high, steady baseload that a large rooftop array will largely self-consume, so a bigger system is usually justified. A beef or sheep enterprise has a much lower building demand, often concentrated in winter housing, so a big rooftop array would export most of its generation at the lower rate; for those holdings a smaller rooftop system, a ground-mount that serves the whole farm, or a shared arrangement usually pays better. Always ask for the numbers to be run from the actual meter data rather than a rule of thumb, because two livestock farms of the same acreage can have very different load shapes.

A common worry on a working livestock unit is that the install will disrupt the animals or compromise health status, and it is a fair concern. A rooftop install need not interfere with day-to-day operations if it is planned properly. Agree the biosecurity regime with the installer before work starts, ask them to route access away from clean areas, and have the physical work scheduled around your stocking and movement calendar so the unit keeps running. The only genuine outage should be the final grid connection, which is usually a matter of hours and can be booked for a quiet period you choose. For a unit feeding a supermarket contract, that careful approach matters as much as the engineering, because nothing about the install should put your assurance status or your buyer relationship at risk.

Costs, payback and tax relief

A livestock project typically runs £20,000 to £285,000 ex VAT (indicative, from the DESNZ May 2026 median of £1,204 per kW for 10-50 kW systems and installer and industry price guides above 50 kW, excluding grid reinforcement, re-roofing and batteries). The indicative simple payback is roughly 4 to 7 years for an intensive unit whose array is sized to its daytime ventilation load (assuming 70-80% used on site at 24-28p avoided import), and roughly 6 to 13 years for a beef or sheep holding that exports more. The 100% Annual Investment Allowance lets most farm businesses write off the full cost against profit in year one, and the Smart Export Guarantee pays for any surplus you export. For intensive units with very high self-consumption the return is driven by avoided import rather than export, which is the stronger position to be in because you are displacing the full retail price of grid power rather than selling units back at a lower rate. See the cost guide for worked figures by shed type and the funding page for the tax and export detail.

Because livestock installs are typically modest in scale, they almost always fall well within the £1m Annual Investment Allowance cap, so the whole qualifying cost can be written off against profit in the first year. That year-one relief, combined with the high self-consumption of an intensive unit, is what can bring the payback towards the lower end of that band and leave many years of low-cost generation after that, with 25 to 30 year module performance warranties. This guide gives the figure as a range because shed type, ventilation regime, stocking density and tariff all move it, and an honest band is more useful than a flattering single number.

Where a shed has an ageing asbestos cement roof, the economics can work even harder. Panels should not be fixed to asbestos cement sheeting, so those roofs need a strip and reclad to modern profiled steel before PV goes on, which on the face of it adds cost. But many livestock farmers have been deferring a re-roof for years, and the solar business case can help fund that long-postponed refurbishment inside the same capital decision. You end up with a new, watertight roof and a generating asset on top of it, rather than continuing to patch a roof that was due for replacement anyway. A good installer will assess the roof condition and check for asbestos at survey, so if a reclad is needed it is priced into the quote from the outset.

Funding routes in detail

The 100% Annual Investment Allowance applies to companies, partnerships and sole traders and relieves qualifying plant in full in year one up to £1m a year, which livestock installs usually sit well below. The Smart Export Guarantee pays for exported units on systems up to 5 MW, with export rates for businesses varying roughly from 3p to 15p per kWh; MCS certification is required for systems up to 50 kW, though intensive units with strong self-consumption export relatively little. No farm solar capital grant is open in England in 2026: Improving Farm Productivity round 2 closed at the end of July 2025 and FETF 2026 did not fund solar panels. The Sustainable Farming Incentive does not pay for solar panels (it reopened as SFI26 in 2026, paying for land-management actions only); land under panels can sometimes sit alongside separate environmental actions, subject to scheme rules, so check with the RPA. Livestock farms in Wales, Scotland and Northern Ireland should check current devolved schemes, none of which pays for solar panels at the time of writing. Our guides set out how each route works so you can check what applies to your holding.

Compliance and sector considerations

Animal welfare regulations are unaffected by a rooftop install, but biosecurity should govern how the installer works. Boot dips, restricted access and cleaning protocols should apply throughout, with access routes that keep the install away from clean areas and follow your unit's existing biosecurity regime. Rooftop PV on agricultural buildings in England is normally permitted development under GPDO Part 14 Class J with no capacity cap, though systems over 50 kW need prior approval from the planning authority, and a G99 grid application is needed above 16 A per phase (about 11 kW three-phase). Pre-2000 sheds often carry asbestos cement roofs that panels should not be fixed to; these usually need a reclad first, carried out by trained contractors following HSE guidance under the Control of Asbestos Regulations 2012, work the PV business case can help fund. Tenanted units need landlord consent for the structural alteration, so raise it with your landlord early. A good installer confirms the roof build-up and any asbestos before quoting rather than discovering it on the day, because for a live livestock unit an unexpected re-roof mid-project is disruptive as well as costly.

What a good installer should do on this kind of project

Ask the installer to size from your half-hourly meter data and the ventilation and heating pattern that drives an intensive unit, so the array matches genuine demand rather than nameplate capacity. A good installer will survey the buildings, check for asbestos and confirm the structure before quoting, and will plan the job around your unit's biosecurity from the first site visit, agreeing access and cleaning protocols with you in advance so the install never compromises your health status. The G99 grid application should go in early, alongside the survey, because the rural connection is usually the slowest step, and where export capacity is tight a self-consumption-only design may be an option. Ask what workmanship warranty is offered and whether it is insurance-backed, check the installer's MCS certificate on the MCS register, and agree a schedule around your stocking and movement calendar so production is not disrupted. Send the enquiry form and SEO Dons passes it to an installer covering your area.

An illustrative example

As an illustrative example based on typical UK livestock figures, not a real farm or project, a free-range broiler unit with two large clear-span sheds and a high year-round ventilation load might install around 150 kW across the shed roofs, generating in the region of 140,000 kWh a year. At an indicative 900 pounds per kW it would cost about 135,000 pounds ex VAT and avoid about 18 tonnes of CO2e a year. If 75% of output is used on site (an assumption, not a measured figure), at roughly 26p avoided import and 4p export the saving would be around 28,700 pounds a year, a simple payback close to 5 years, and the cost could be relieved in year one under the Annual Investment Allowance. The figures are illustrative and depend on your buildings, stocking and tariff; an installer should model your own numbers from meter data before anything is committed, and no worked example should be read as a guaranteed outcome for a different unit.

If you also crop or run a dairy, see arable solar and dairy solar. To see the economics, read the cost guide and the grants and funding page, then request a free quote or read the agricultural solar FAQs.