Agricultural Solar Panel Installers: How to Choose One in the UK

Agricultural solar panel installers are not one category

The search term covers three different kinds of company: national commercial installers with an agriculture page, regional electrical contractors who do farm PV as part of a wider rural workload, and a small number of firms that only do farm and estate work. None of the three is automatically right. What matters is whether the installer can answer, for your buildings, the questions that decide a farm project — the roof, the connection, the biosecurity and access calendar, and the money — and whether the paperwork behind them checks out on registers they do not control.

This page is the checking guide. It is written by an independent publisher, not an installer: this site earns its keep by matching farms with installers that pass these checks, so nothing below is an argument for any one company.

What the top-ranking installer pages get wrong

Several pages ranking for this term repeat claims that do not survive a check of the primary source. The table sets the common claim against the verified position (checked September 2026).

The registers, and what each one proves

• MCS installer search — proves the company is certified for the technology at small scale and matters for any array at or under 50 kW that will claim the Smart Export Guarantee. Search by postcode and technology; the listing shows the certification body and scope.
• NICEIC or NAPIT (or ELECSA) register — proves the electrical contractor is registered to certify work under BS 7671. On a farm install this is the registration that actually covers the wiring, the AC side and the certificate you will be handed at commissioning.
• Companies House — free. Look for years of filed accounts, the current directors and whether the trading name on the quote matches a company that exists. Workmanship warranties are only as good as the company behind them.
• ENA type-test register — lists inverters and generation equipment type-tested for G98 and G99 connection. If the inverter in your quote is not on it, the G99 application will stall.
• The network operator’s G99 acceptance — not a register but the single most important document on a farm project. Ask which DNO, whether an export limit is expected and who submits the application; a good installer submits it straight after the structural survey.
• Insurance certificate and warranty insurer — ask for the certificate rather than the figure, and for the name of the insurer standing behind the workmanship warranty if the installer ceases trading.

The farm-specific questions a specialist answers before quoting

Put these to every installer on the shortlist. The answers separate someone who has worked on farm buildings from someone who has an agriculture page.

1. The roof. Is it asbestos cement, fibre cement or profiled steel, and what does that mean for fixings? Has the purlin and rafter capacity been checked for the added dead load and wind uplift? Will the array sit at least 1 m from the roof edge and within 0.2 m of the roof plane, so it stays inside permitted development?
2. The connection. Which DNO, what is the existing supply capacity, and is an export limit likely? What does the design look like if the offer comes back constrained — a no-export system, a battery, or a smaller array?
3. The calendar. When can they be on site around calving, lambing, harvest and drying, and what are their biosecurity procedures on a dairy, poultry or pig unit?
4. The building’s status. Is any building listed or within the curtilage of one, in a conservation area, National Park or National Landscape? Those change the planning route and a specialist checks before quoting.
5. The money. Will the PV plant and any roofing be invoiced separately for capital allowances? Which SEG tariffs did they assume, and at what rate? Is any grant mentioned actually open, with a link to the scheme page?

What an agricultural solar quote should contain

A usable proposal for a farm building states the yield assumption in kWh per kWp for your location, the self-consumption ratio modelled from your half-hourly meter data, the system size per building, the G99 strategy including any export limit, the structural findings, a fixed price with the PV plant separated from any roofing work, the warranty terms with the insurer named, and a programme that starts from the DNO offer rather than the panel delivery. The 30-question installer checklist turns that into a form you can send to every bidder, and the reviews guide covers how to read an installer’s public review record on registers they cannot edit.

Agricultural solar projects by building type

The economics differ by building because the load profile does. Each page below sets out typical system sizes, self-consumption and the compliance points an installer should raise:

• Dairy parlour solar — continuous cooling and washdown load, the strongest self-consumption case
• Livestock shed solar — large low-pitch roofs, seasonal loads
• Grain store solar — big roofs, drying-season peaks, export matters
• Poultry shed solar — ventilation baseload, biosecurity access rules
• Pig unit solar — year-round heating and ventilation
• Polytunnel and glasshouse solar — scale and heat loads
• Equestrian building solar — lower loads, longer payback
• Farm workshop solar — small arrays, often under the 50 kW MCS line

For the rules and cost picture across all of them see solar panels for agricultural buildings; for the permitted-development limits in detail see planning permission for solar panels on farm buildings; and for the roof most installers refuse to fix through, solar panels on asbestos cement farm roofs.

UK regions covered

Matched quotes are available across the UK mainland and Northern Ireland. Regional and county hubs, with local network operators and building stock:

See all locations for the full list.

Warranty cover — what to read before you sign

Expect a module product warranty and a linear performance warranty from the manufacturer, an inverter warranty, and a workmanship warranty from the installer. The question that matters is who pays if the installer stops trading: an insurance-backed workmanship warranty names an insurer, an uninsured one names nobody. The UK solar panel warranty explainer walks through the layers and the claim process.

Getting quotes

Send your half-hourly meter data and building details through the quote form. Installers matched to your buildings quote from that data, and you can run every one of the checks above on each quote before you decide. Prefer a conversation first? Contact us.