Grants and funding for solar panels for farm buildings

The honest 2026 position

Farm-building solar is funded by tax relief, export income and finance, not by grants. That has been true for most of the last decade, and the one England round that did fund rooftop PV directly — the Improving Farm Productivity grant, at 25% of eligible cost — has closed. Any page telling you a scheme will pay 40% or more of a barn-roof array in 2026 is describing something that does not exist. The sections below set out what is open, what has closed, and how to read the official pages yourself so you are not relying on us either.

Open now: the three routes that work

1. 100% Annual Investment Allowance

Solar panels are special-rate plant for capital allowances. The Annual Investment Allowance lets the business deduct 100% of the first £1m of qualifying plant-and-machinery spend in the year from taxable profit, and a £40,000–£400,000 farm-building install sits comfortably inside that cap for most holdings. Two points that get missed: full expensing does not apply (it is limited to main-rate assets, so above the AIA cap a company gets the 50% special-rate first-year allowance instead), and on a combined re-roof the roof works are building fabric, not plant. Ask the installer for an invoice that separates the PV plant from any roofing so your accountant can apportion it. The AIA case is worked through on the AIA page.

2. Smart Export Guarantee

In Great Britain every licensed supplier above the size threshold must offer a Smart Export Guarantee tariff (Northern Ireland has no SEG; suppliers there set their own export rates) for exported units from eligible installations up to 5 MW. Payments are calculated from export meter readings, so an export-capable meter is required, and the installation has to meet the scheme eligibility criteria — for solar PV that means MCS (or equivalent) certification of the install. Tariffs vary widely between suppliers and are not fixed by Ofgem, so treat any quoted pence-per-kWh figure as a snapshot and compare current offers before commissioning. For a dairy parlour that self-consumes most of its generation the SEG line is small; for a grain store with a summer export peak it can be the difference between a six- and a seven-year payback. The farm-specific comparison is on the SEG page.

3. Workplace Charging Scheme (EV chargers)

If the project includes chargepoints for the farm's own vehicles or staff, the Workplace Charging Scheme pays 75% of the purchase and installation cost, capped at £500 per socket for up to 40 sockets, at the rate in force since 1 April 2026. The scheme is currently open to 31 March 2027. The separate electric vehicle infrastructure grant for staff and fleets closed on 31 March 2026. Details and the worked example are on the farm EV charging page.

Closed or not applicable: check before you plan around them

Schemes reopen and close on short windows. The England position is published on the gov.uk "Funding for farmers, growers and land managers" page (last updated 22 September 2026 when checked); Wales publishes windows on the Welsh Government farming pages; Scotland on Rural Payments and Services; Northern Ireland on the DAERA site. Read the current page rather than a summary — including this one.

In Scotland, Wales and Northern Ireland

In Scotland

The Future Farming Investment Scheme 2026 is announced but not open, and its 2025 list made solar panels and batteries ineligible. The Business Energy Scotland SME Loan is interest-free but is not accepting new solar PV applications. Two things do help a Scottish farm roof: renewables plant is excluded from non-domestic rates valuation to 31 March 2035 (SSI 2023/32), and the Smart Export Guarantee applies. Planning runs under Class 6J, not the English Class J. Details are on solar on farm buildings in Scotland.

In Wales

The Sustainable Farming Scheme has no solar items for 2026 and Ynni Cymru closed on 21 May 2026. The farm route is a loan, not a grant: the Development Bank of Wales Sustainable Agriculture Loan at 3% fixed (£25,000 to £1m, up to 15 years; its page still says register interest). The bank's Green Business Loan Scheme also names solar PV. Renewables plant is excepted from rates valuation to 2035 (WSI 2023/1229), the SEG applies, and planning runs under Part 43 of the Welsh order. Details are on solar on farm buildings in Wales.

In Northern Ireland

DAERA's Sustainable Farming Investment Scheme Round 1 is closed and did not list rooftop solar. Power NI's NISEP-funded grant for business solar PV (20%, capped at £30,000) has closed for applications for 2026/27, with the next round expected in April 2027, subject to funding approval. The Invest NI Energy Efficiency Capital Grant is paused. There is no Smart Export Guarantee: suppliers set their own export rates, and Power NI publishes 11.88p per kWh for 1 October 2026 to 30 September 2027. Plant up to 50 kW is not rateable.

The farmhouse is a different case from the sheds

Domestic and business support run on separate tracks and it pays to keep them apart in the plan. Solar, battery storage and heat pumps installed on the farmhouse or a residential let carry 0% VAT until 31 March 2027, and a farmhouse heat pump can claim the Boiler Upgrade Scheme, which GOV.UK also says can be used for a building used for a business, within its size limit. The 0% VAT relief does not apply to a livestock shed or grain store: the sheds’ solar is a business investment funded through capital allowances, and in England eligible on-site renewables plant is left out of the rateable value for business rates until 2035. Pairing the two is covered in solar and ground-source heat for farm buildings.

If a grant doesn't fit: the routes farms actually use

For most farm-building projects no grant fits, and that is normal. These are the realistic alternatives, set out as information so you can compare them. This site does not arrange finance, pass details to lenders or act for any PPA provider; ask your accountant and each provider for their own terms.

• Self-funding against the Annual Investment Allowance. Solar is special-rate plant (Capital Allowances Act 2001, s104A), so the first £1m of qualifying spend in a year gets 100% AIA and spend above that gets the 50% special-rate first-year allowance. Work the payback from your own half-hourly data with the farm solar calculator and the cost guide; the allowance itself is on the AIA page.
• Hire purchase or asset finance. Under a hire-purchase contract the farm business is treated as owning the plant for capital allowances from the start (Capital Allowances Act 2001, s67), so the AIA can still apply while the cost is spread over the term. A lease usually leaves the allowances with the owner. How lenders look at a farm array is covered in asset finance for farm solar.
• A power purchase agreement. A third party owns the array on your roof and you buy the electricity it generates at an agreed rate, so there is no upfront cost. The owner, not the farm, claims the allowances. It suits large roofs with steady daytime use, and on a tenanted holding it needs the landlord's consent. See PPA for farms and PPA vs asset finance vs capital.
• Public business loans, where they exist. In Wales the Development Bank of Wales runs a Green Business Loan Scheme that names solar PV, and a 3% fixed Sustainable Agriculture Loan for farms. In Scotland the Business Energy Scotland SME Loan is not accepting solar PV applications. We found no equivalent public loan for farm-building solar in England or Northern Ireland.

Supermarket and processor frameworks are not grants

Tesco, Sainsbury's, Morrisons, Arla and the assurance schemes ask suppliers for evidence of Scope 2 reductions; a commissioned PV system is that evidence. They do not fund the install. The scheme-by-scheme notes are linked below so you can see what each one actually asks for.

Common pitfalls

• Planning around a grant that has closed. Rounds are announced with short windows and most 2026 lists never included roof arrays. Build the case on AIA, self-consumption and SEG; treat any grant as upside.
• Missing the AIA cap. The £1m allowance is annual and shared across all plant. If PV lands in the same year as a robotic parlour or a grain dryer, the order and timing of spend changes the relief. Plan it with your accountant.
• Assuming full expensing. It does not apply to solar panels (special-rate plant). Above the AIA cap a company gets the 50% first-year allowance.
• Choosing a SEG tariff by habit. Rates differ several-fold between suppliers and change often. Compare current offers at commissioning and again at renewal.
• Mixing the farmhouse and the business. 0% VAT is a domestic relief and the Boiler Upgrade Scheme covers heating only; the sheds’ solar is funded through capital allowances. Keep the invoices separate.

How to check any scheme yourself in five minutes

1. Open the official page, not a summary: gov.uk for England, gov.wales for Wales, ruralpayments.org for Scotland, daera-ni.gov.uk for Northern Ireland.
2. Find the window dates. If the page shows a closing date in the past and no new round, it is closed.
3. Search the eligible-items list for "solar" or "photovoltaic". A solar water pump is not a roof array.
4. Note the intervention rate and the grant ceiling — both matter more than the headline.
5. Only then put it in the business case, as a separate line you can remove.