Solar panels for Irish farms: cut the cost of milking, cooling, drying and ventilation
Plain-English advice on TAMS 3 solar, the SEAI business grant, planning and ESB Networks connection – then quotes from SEAI-registered installers who survey your yard and size the system to what your farm actually uses.
Get Solar QuotesCheck Your Grant OptionsWhy solar suits Irish farms
Most farms have big unshaded shed roofs and a steady daytime load. But farm grant rules changed a lot in 2026, so the right route depends on your enterprise, meter and timing.
Roof space you already own
Slatted sheds, barns and parlour roofs are often large, simple surfaces. Rooftop solar on agricultural structures is generally exempt from planning if you meet the conditions (see below), and it keeps land in production.
Daytime loads that match the sun
Milk cooling, water heating, vacuum pumps, fans, lighting and water pumping all run in daylight hours. Teagasc found 62% of audited dairy farm electricity was used on the more expensive day tariff.
Price certainty
Every unit you generate and use yourself is a unit you don’t buy. Surplus can be exported and paid for under the Clean Export Guarantee (CEG).
Farm energy-use profiles: where the units go
Sizing starts with your bills, not your roof. Teagasc’s Dairy Farm Energy fact sheet (Upton & Caslin, 2020; 22 audited farms) shows the dairy load:
- Milk cooling – about 31% of farm electricity (13.02 Wh per litre). Around 60% of cooling energy was used on day rate.
- Water heating – about 23% (9.83 Wh/L), with 45% on day rate.
- Milking machine/vacuum – about 20% (8.44 Wh/L), with 71% on day rate.
- Pumping, lighting and other loads made up the rest. Total use averaged 42.34 Wh per litre.
Source: Teagasc Fact Sheet 05, Dairy Farm Energy (2020). Cost figures in that sheet are 2020 prices, so we haven’t repeated them; use your own bills.
What that means for solar on a dairy farm
Morning milking often starts before strong sun, so evening milking, cooling and daytime water heating are where solar does most work. Spring-calving herds peak in late spring and summer – which suits solar well. Teagasc also points to cheaper wins that should come before or alongside solar: a plate cooler for pre-cooling milk, a variable speed drive on the vacuum pump and timing the water heater to night rate.
Tillage
Grain drying and aeration fans concentrate demand around harvest. Ask installers to model month-by-month output against your actual 12-month usage – a system sized to a short peak can export most of its output the rest of the year.
Pig & poultry
Ventilation, heating, feeding and lighting run all year – a steady daytime base load that often suits solar best. Check whether loads are on one MPRN or several; SEAI supports only one solar PV system per MPRN.
Equine
Stables, arenas, lighting, water heating and horse walkers are typical loads. Teagasc lists TAMS solar under its equine supports.
Typical system sizes & roof or ground options
We don’t publish “typical” farm system sizes or prices, because farms vary hugely and installers should quote from your data. What we can tell you is how sizing is decided:
Sizing to your usage
Teagasc’s dairy solar guidance gives a rule of thumb: maximum size (kWp) ≈ annual consumption (kWh) ÷ 950. So a farm using 30,000 kWh a year would be looking at roughly 31 kWp as an upper limit if using TAMS. Teagasc: Solar PV Systems on Dairy Farms.
Roof or ground mount?
Roof mounting is cheapest to permit. Ground-mounted arrays on a farm are only planning-exempt up to 75 m² of panel area and 2.5 m high, which is roughly a small domestic-size array. Larger ground-mounts need planning permission.
Single-phase supply limits system size more than many farmers expect (see grid connection below). Our system options guide explains panels, inverters and mounting in more detail.
TAMS 3 Solar Capital Investment Scheme (SCIS)
The Department of Agriculture, Food and the Marine (DAFM) runs solar for farms through TAMS 3. Key points, checked 25 October 2026:
- Grant rate: 60% of eligible cost (the lower of the reference cost or your actual cost).
- Investment ceiling: €90,000, ring-fenced and separate from the €90,000 ceiling for other TAMS 3 schemes. For a registered farm partnership the solar ceiling stays at €90,000 across all partners. (Teagasc)
- Sized to farm use: under EU rules and the CAP Strategic Plan, the electricity the system generates in a year should not exceed the farm’s annual demand. An On Farm Solar PV Survey must be submitted with the application; applications can be rejected or amended if you can’t show this. The maximum grant-aided panel size is reported as 62 kWp. (Agriland, Jan 2026)
- Export: the aim is on-farm use, but the Minister has confirmed surplus that spills onto the grid can be paid for under the Clean Export Guarantee.
- Batteries: eligible at 60%, capped at 50% of panel capacity (rule at scheme launch, per the Irish Farmers Journal).
- Farmhouse: from Tranche 11 (March 2026), DAFM said grant aid would support on-farm energy consumption only and signalled excluding domestic dwellings, directing farmers to SEAI for domestic use. (DAFM, Agriland)
The big catch: ranking & selection
SCIS is heavily oversubscribed. DAFM selected only 10% of SCIS applications in Tranche 10 (DAFM, 3 Mar 2026) and again 10% in Tranche 12 (reported Aug 2026), while farm safety applications were selected at 100%. Tranche 14 closes on 4 December 2026. You must not start work before approval.
So TAMS gives the best rate, but most applicants currently don’t get selected.
Can farms use the SEAI business solar grant?
Yes – a farm business can apply for the SEAI Non-Domestic Microgen Grant. The Irish Farmers Journal (12 Oct 2026) reported the IFA promoting it to farmers after SEAI raised the payment to 45% of eligible cost for applications from 6 October 2026, noting it is “a direct application, with no ranking or tranche wait”.
But you cannot use both on the same system. SEAI’s terms and conditions say aid can’t be cumulated with other grant schemes, and only one solar PV system is supported per MPRN. DAFM and SEAI are moving to share data to catch double funding, and DAFM has said it will apply a 100% penalty to a solar investment found to be double-funded (Agriland, Sept 2026). Pick one route per installation and keep the paperwork.
Other SEAI conditions include: premises built before 31 December 2024, an SEAI-registered installer, a contract in place before you apply, and no works before your letter of offer. SEAI doesn’t pay extra for batteries. See our solar grants guide for the full process.
Sources checked 25 Oct 2026. Grant rules change; we confirm the current position with you before any application.
| 1 kWp | €1,800 |
| 2 kWp | €3,600 |
| 3 kWp | €4,200 |
| 4–6 kWp | €4,800 |
| 7–20 kWp | €600 per kWp |
| 21–200 kWp | €400 per kWp |
| 201–1,000 kWp | €300 per kWp |
| Maximum grant | €325,200 |
For new applications from 6 Oct 2026 to 6 Jul 2027, SEAI pays the lower of the table amount and 45% of your invoiced cost (ex VAT). Your installer should show the grant calculation for your exact system size in writing. Checked 25 Oct 2026 – confirm on SEAI before you sign.
Tax: capital allowances & VAT
Accelerated Capital Allowances
The ACA scheme for energy-efficient equipment (s.285A TCA 1997) has been extended to 31 December 2030 (Revenue eBrief 028/2026). Photovoltaic systems and inverters sit in the “Heating and Electricity Provision” category of SEAI’s Triple E Register; equipment generally needs to be on the register to qualify. Ask your accountant how any grant affects the claim.
VAT
The 0% VAT rate on solar applies to private dwellings and recognised schools, not farm buildings. For other buildings Revenue says supply-and-install may be at the reduced rate, subject to the two-thirds rule (Revenue VAT guidance). VAT-registered farmers can usually reclaim VAT on business inputs – check with your accountant.
Larger export projects
If you have space for a bigger array that exports most of its output, the government’s Small-Scale Renewable Electricity Support Scheme (SRESS) offers an export tariff route for projects above 50 kW, with 1–6 MW reserved for SMEs, farmers and energy communities. Ground-mounts over 75 m² need full planning first.
Planning permission for farm solar
Farm solar exemptions are set out in Class 18(c), Part 3, Schedule 2 of the Planning and Development Regulations, as introduced by S.I. No. 493 of 2022 (in force 5 October 2022). As of October 2026 these remain the rules to work to; a 2025 government consultation on further exemptions had not, as far as we could find, produced new regulations. In summary:
Roof & wall panels on agricultural structures
- No overall area limit on roofs outside a Solar Safeguarding Zone (SSZ).
- Inside one of the SSZs (mostly near airports and airfields), total panel area is capped at 300 m² and you must notify the council within 4 weeks of starting.
- On pitched roofs, panels no more than 15 cm off the roof and at least 50 cm from the edges; no higher than the ridge. Flat roofs: up to 1.2 m high and 2 m from the edge.
- The electricity must be used primarily (more than 50%) within the agricultural holding.
- No hazardous glint or glare.
Ground-mounted arrays
- Total panel area up to 75 m² (including existing free-standing panels).
- No more than 2.5 m above ground.
- Not forward of the front wall of the agricultural structure nearest a public road.
- Architectural Conservation Area or protected-structure sites need extra care.
Anything beyond these limits needs planning permission (or ask the council for a Section 5 declaration).
Sources: S.I. 493/2022, Fieldfisher summary, Irish Farmers Journal on the 2025 review. Not legal advice – installers and your council have the final word.
Grid connection: ESB Networks rules for farms
Micro-generation (NC6)
Up to about 6 kW on single-phase or 11 kW on three-phase (inverter rating). Your installer notifies ESB Networks with form NC6. (CRU)
Mini-generation (NC7)
From 6 kVA to 17 kVA single-phase, or 11 kVA to 50 kVA three-phase. Needs an application, a non-refundable fee of €1,041.81 incl. VAT and a technical study; ESB Networks quotes about 8–10 weeks for an offer. Don’t install until the connection agreement is signed. Export can’t exceed your import capacity (MIC). (ESB Networks)
Bigger systems
Above those limits and up to 200 kVA is “small-scale generation”; above 200 kVA goes through ESB Networks’ ECP process. Many farms are single-phase, which caps the inverter at 17 kVA unless the supply is upgraded. (ESB Networks)
Once connected, register with your supplier for Clean Export Guarantee payments for exported units. Rates are set by each supplier, so compare them.
Batteries, hot water & EVs
On a farm the cheapest “battery” is often hot water or ice: run the water heater and cooling when the sun is up. A battery can then shift remaining surplus into evening milking. TAMS has historically grant-aided batteries (capped at 50% of panel capacity); SEAI’s business grant does not add anything for batteries. See our battery storage advice.
EVs & the farmhouse
Daytime charging of an electric jeep, quad or yard vehicle is an easy use for surplus. For the farmhouse, the SEAI domestic solar grant may be the route – and if your household gets Working Family Payment, see our WFP solar grant page.
How it works
Solar123 is an independent advice and quote-matching service. We don’t install; with your consent we pass your enquiry to SEAI-registered installers who survey and quote.
Enterprise type, roof/sheds available, single- or three-phase supply, rough annual units (from 12 months of bills) and whether you’re thinking TAMS or SEAI.
We talk through TAMS timing, the SEAI route, planning and grid connection so you know what to ask.
Registered installers visit, check roofs and supply, model output against your usage and quote in writing.
Grant approval (TAMS or SEAI) and the ESB Networks connection agreement must be in place before installation. More on how it works.
Choosing a farm solar installer: checklist
- Registered with SEAI as a Non-Domestic Solar PV company (needed for SEAI grants).
- Experience with TAMS surveys and DAFM paperwork if you’re going that route.
- Sizes the system from your 12-month usage and shows the calculation.
- Checks roof condition, purlins, fragile sheets and any asbestos cement.
- Handles the NC6/NC7 application and confirms phase and MIC.
- Considers ammonia and dust when specifying panels, mounting and cable routes.
- Safe Electric registered electrician; you get the certificate at handover.
- Quotes are like-for-like – use our quote comparison guide.
Farm solar FAQs
What is the TAMS 3 solar grant rate?
60% of eligible cost, with a separate €90,000 investment ceiling. Eligible cost is the lower of DAFM’s reference cost or your actual cost.
Can I apply for TAMS and the SEAI grant at the same time?
Not for the same installation. SEAI doesn’t allow aid to be cumulated with other grant schemes, and DAFM has said double-funded solar will face a 100% penalty.
Can I size my system bigger to sell power back to the grid?
Not under TAMS: annual generation should not exceed the farm’s annual demand, and this is checked through the On Farm Solar PV Survey. Occasional surplus can be paid under the CEG.
Does the farmhouse count towards TAMS sizing?
At scheme launch, one house on the same MPRN could be included. DAFM signalled in March 2026 that domestic dwellings would be excluded to focus on on-farm demand. Check the current TAMS terms for your tranche before you apply.
Do I need planning permission for solar on a shed roof?
Usually not, if you meet the Class 18(c) conditions and the electricity is mainly used on the holding.
My farm is single-phase. Is that a problem?
It limits the inverter to about 17 kVA under mini-generation (6 kW under micro-generation).
How long does payback take?
It depends on cost, grant, how much you use on-site and your tariff. Teagasc’s dairy guidance cites around 3–4 years with the TAMS grant. Ask installers to show payback with and without grant, using your own data.
More answers on our FAQ page and industries we service.
Get your farm solar quote today
Tell us about your farm and we’ll match you with SEAI-registered installers who’ll survey, size to your usage and quote. Or call 089 450 4544
Sending an enquiry is not an official grant application.