Why poultry & broiler sheds are an excellent fit for commercial rooftop PV
Modern UK poultry sheds — free-range egg laying houses, broiler grow-out sheds, breeding houses and table-egg packing facilities — are among the largest contiguous-roof buildings on commercial farms. Free-range egg laying houses to RSPCA Assured and Lion Quality standards are typically 80m × 22m per shed (around 1,760 sqm) with year-round 24/7 lighting and ventilation loads. Broiler grow-out sheds run heating intensively through brooding (chick rearing) and ventilation continuously through finishing. Multi-shed sites with 4–10 buildings on a single yard are common — typical large free-range or broiler operations support combined installs of 500 kW to 1.5 MW under a single G99 application. The self-consumption story is excellent: continuous year-round baseload across multiple buildings typically delivers 75–90% self-consumption depending on retailer-mandated lighting protocols.
System sizing for poultry & broiler sheds
Poultry shed PV sizing should be matched to the operating cycle. Free-range egg laying houses with daylight-mimicking artificial lighting have a steady year-round baseload of 30–60 kW per shed — size at 80–180 kW per building roof. Broiler grow-out sheds have a more variable load profile (intensive heating in week 1–2 brooding, then dropping rapidly as birds grow) — typically size at 100–200 kW per shed to capture grow-out ventilation baseload and export the seasonal surplus under SEG. Pullet rearing houses sit between the two. Multi-shed sites benefit from aggregated install scale — central inverter farms, shared monitoring, single G99 application — and we routinely deliver 600 kW+ installs across 4–6 shed roofs on a single mobilisation.
Typical poultry & broiler sheds install at a glance
- System size range
- 50–300 kW
- Panel count
- 92–550
- Roof area needed
- 300–1,800 sqm
- Annual generation
- 46,000–275,000 kWh
- Annual CO2 avoided
- 11–63 tonnes
Cost and economics
Poultry install economics in 2026: 50–300 kW typical systems, 46,000–275,000 kWh annual generation. The economic case for poultry PV has strengthened significantly since 2023 as electricity costs settled above 24p/kWh and retailer Scope 3 supplier audits intensified. Good installers provide auditor-ready documentation as standard.
Compare these numbers against the wider cost of farm-building solar in 2026 and the grants and finance routes available. Ask each installer to show its yield and financial assumptions in writing, and compare them with the farm solar payback calculator.
Birds nesting under an array are a fire and insurance question as well as a nuisance: see bird proofing solar panels on a poultry shed roof. Then estimate the payback for this roof in the farm solar payback calculator.
Compliance and regulation
Avian Influenza biosecurity (Avian Influenza Order 2006) applies during install — boot dips, restricted access lanes, vehicle disinfection, daily decontamination of the crew. We work in biosecurity-conscious mode whenever any poultry are in residence. Salmonella National Control Programme requirements are unaffected by rooftop PV. RSPCA Assured, Lion Quality and supermarket-specific welfare schemes welcome PV — most schemes now have specific sustainability sections that reward documented Scope 2 reductions. Welfare of Farmed Animals Regulations 2007 unaffected. Electrical works to building services follow BS 7671 with the standard observation that ventilation systems are critical-load and must not be interrupted.
Install programme and timeline
What an install involves: a structural and electrical survey, a design and written proposal, the DNO G99 application, procurement, installation and commissioning. Ask each installer for its programme in writing; the grid connection is usually the longest step, so apply early. See the planning guide for the Class J limits.
A modelled poultry & broiler sheds scenario
A representative modelled scenario: a North Norfolk free-range egg producer running 350,000 laying hens across two clear-span insulated sheds (each 80m × 22m). Annual pre-install electricity spend £58,000 across continuous ventilation and lighting. The modelled scope: 180 kW rooftop PV across both sheds — 330 modules, two string inverters per shed, all wired to the central control building's main switchboard. An install like this runs under full Avian Influenza biosecurity in a six-week window between flock changeovers. The modelled system reaches 78% self-consumption thanks to continuous ventilation and lighting baseload. Modelled annual saving: £39,500 in year one. Simple payback 5.6 years. For a retailer-contracted producer, the install becomes direct Scope 2 audit evidence.
More modelled worked examples are in the case studies library; each is labelled as modelled, not a named client project.
Key features and capabilities for poultry & broiler sheds
- Free-range egg and broiler operations have huge clear-span roofs (typically 80m × 20m per shed)
- Continuous ventilation, heating in winter, and lighting create year-round baseload
- Multi-shed sites can support 500+ kW aggregated installs
- Free-range scheme alignment with sustainability evidence
Send your poultry & broiler sheds roof details
Tell us the building, the roof sheeting and what you want to know. Send your details through the quote form and we reply by email. Before you sign with any installer, check their MCS certificate on the MCS register and ask for the structural, roof-condition and grid assumptions in writing.
Common questions
How much do solar panels for farm buildings cost in the UK?
DESNZ's solar PV cost data for 2025/26 puts the mean installed cost of 10-50 kW projects at about £1,267 per kW (median about £1,204 per kW), and non-domestic 10-50 kW installations at about £1,167 per kW. The series covers all building types, not farm buildings alone, and stops at 50 kW. Your price depends on roof access, any re-roofing, cabling distance to the intake and the grid connection. The cost page on this site sets out the regional figures and the method; treat them as a benchmark and compare written quotes against them.
Can we put solar panels on asbestos cement barn roofs?
Not directly: installers will not normally fix through asbestos cement sheets, so the roof is overclad or replaced before the panels go on. HSE says most work on asbestos cement is non-licensed provided the people doing it are informed, instructed and trained, and its task sheet A14 asks whether the sheets can be overlaid with non-asbestos material instead of removed. Price the roof work and the PV separately: the roof is building fabric, the PV is plant, and the two are treated differently for tax.
Which farm building should we install solar on first?
Prioritise by three criteria: (1) roof area and orientation — the biggest south-facing clear-span roof in sound structural condition wins; (2) on-site daytime load — dairy parlours, grain stores during harvest, intensive livestock houses, and farm workshops all have year-round or seasonal daytime baseload; (3) install access and biosecurity complexity — workshops and grain stores typically have lower biosecurity friction than poultry or pig units, but the latter often have much larger roofs. We rank each building during feasibility on payback, self-consumption, and complexity.
Will solar panels work on a curved or arched barn roof?
Generally no — modern PV requires a structural surface with adequate purlin spacing and slope (typically 5° to 35°). Curved Dutch-barn or hooped sheds need either a separate flat or pitched roof to be installed (rare), a ground-mount alternative, or — most commonly — a different building on the farm chosen as the PV host. We assess every farm holistically rather than fixating on a single building.
What grants are available for farm-building solar in 2026?
No capital grant for rooftop solar on farm buildings was open in England, Wales, Scotland or Northern Ireland when checked on 3 November 2026. What does apply: the 100% Annual Investment Allowance on the PV plant (UK-wide; solar is special-rate plant), Smart Export Guarantee income in Great Britain (Northern Ireland has no SEG; suppliers there set their own export rates), and the Workplace Charging Scheme if EV chargers are part of the project. The Sustainable Farming Incentive pays for land-management actions, not solar. The grants and funding guide sets out each nation and the alternatives when no grant fits.
Do we need planning permission for solar on agricultural buildings?
Rooftop solar on a non-domestic building such as a farm shed is usually permitted development under Class J of Part 14 of Schedule 2 to the GPDO 2015, inside its physical limits. Above 50 kW you must apply for prior approval on design, appearance and glare. Listed buildings and some designated land are treated differently, and ground-mounted arrays follow other rules. The planning guide on this site sets out the current rules; confirm with your local planning authority before you commit.