Solar Panels for Farms in Ireland
Farms are one of the strongest cases for commercial solar in Ireland. Across dairy, beef, tillage, poultry, pig and mixed enterprises, the bulk of farm electricity demand, water pumping, ventilation, cooling, grain drying and shed lighting, falls in daylight hours, and large south-facing shed roofs give you the space to cover it. The TAMS 3 Solar Capital Investment Scheme pays a flat 60% of the cost, under its own ring-fenced €90,000 investment ceiling covering systems up to 62 kWp, which makes the payback faster than almost any other building type. Compare quotes from installers who work on farms. This page covers the commercial-scale numbers; for the full agricultural route — TAMS 3 application steps, Teagasc involvement, and shed-roof suitability — see our main guide to solar panels for farm buildings.
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
Quick Answer
Most Irish farms install 11-100 kWp of rooftop solar, with 11 kWp the sweet spot under TAMS 3 (planning-exempt and up to 60% grant on agricultural buildings). Sized to daytime farm loads like pumping, ventilation, cooling and grain drying, an 11 kWp system costs roughly €9,000-€11,000 before grant, falls to around €3,600-€4,400 after the flat 60% TAMS 3 grant, and typically pays back in 3-5 years.
Why solar suits farms
A farm has two things that make solar PV work well: a large daytime electrical load and a lot of roof. The exact load varies by enterprise, but across the board farm demand is mostly a daytime story. Water pumping for stock and yards, ventilation and cooling in livestock sheds, grain drying at harvest, milk cooling on dairy units and lighting all draw power while the sun is up. That demand lines up closely with when panels generate, so a well-sized array is mostly self-consumed rather than exported, and self-consumption is where the money is.
The load profile is the key. Whether you run a milking parlour, a poultry house with continuous ventilation, a pig unit with feeding and heating, or a tillage yard with grain drying and augers, the bulk of the work happens in daylight. Solar covers the daytime portion of these loads directly. Where demand peaks early or late, such as dairy milking windows or winter livestock heating, a battery or a hot-water diversion device helps shift surplus midday generation into those windows.
Roof space is rarely the constraint. A modern shed, parlour, poultry house or storage building gives a large, unshaded, often south or east–west facing roof, far more than a house. That means you can size the system to the load rather than to the available area. For the wider picture across all farm types, see our farm solar guide.
Pumping & cooling
Water pumping for stock and yards and refrigeration on dairy units run steadily through daylight hours, ideal loads for solar to cover.
Ventilation
Poultry and pig houses run fans and climate control around the clock, with a heavy daytime base load that solar offsets directly.
Grain drying
Tillage farms draw heavy power for grain drying and augers through harvest, a strong daytime summer load that matches peak generation.
What size solar system does a farm need?
Most Irish farms install between 11 and 100 kWp. 11 kWp is the headline figure because it stays planning-exempt on an agricultural building and covers a typical family farm's daytime load, so it is the default starting point. Larger livestock units, intensive poultry or pig houses, robotic milking or significant grain drying can justify 30–100 kWp — TAMS 3 funds systems up to 62 kWp, beyond which you move to the Non-Domestic Microgen Grant and may need planning for the part over the exemption cap.
| Enterprise Type | Typical System | Panels (approx.) | Annual Generation | Best Grant Route |
|---|---|---|---|---|
| Beef / sheep / mixed | 6–11 kWp | 14–26 | ~5,000–9,500 kWh | TAMS 3 (up to 60%) |
| Dairy (typical herd) | 11 kWp | ~26 | ~9,500 kWh | TAMS 3 (up to 60%) |
| Tillage / poultry | 20–50 kWp | 46–115 | ~17,000–43,000 kWh | TAMS 3 (up to 60%) |
| Intensive pig / large dairy | 50–100 kWp | 115–230 | ~43,000–86,000 kWh | TAMS 3 to 62 kWp, then NDMG |
Generation assumes the average Irish yield of around 860 kWh per kWp per year. Actual figures depend on roof pitch, orientation and shading. A site survey and a year of meter data give the accurate sizing, oversizing past your daytime load just pushes more cheap export rather than displacing import.
Farm solar grants, ACA and payback
For farms the headline grant is TAMS 3, not the standard SEAI grant. The TAMS 3 Solar Capital Investment Scheme funds a flat 60% of the cost of on-farm solar for all eligible applicants, under its own ring-fenced €90,000 investment ceiling — a maximum grant of €54,000, covering systems up to 62 kWp. Arrays up to 11 kWp are planning-exempt on agricultural buildings, and TAMS support stacks with the Clean Export Guarantee for any surplus you do export.
Above 62 kWp, or once the €90,000 investment ceiling is used up, TAMS 3 no longer applies, so larger arrays use the SEAI Non-Domestic Microgeneration Grant (NDMG) instead, which runs up to a maximum of €162,600 on large systems. You apply under one scheme or the other, not both, so the size you choose drives which grant fits.
| System | Gross Cost (est.) | Grant Route | Net Cost (est.) | Payback |
|---|---|---|---|---|
| 11 kWp | €9,000–€11,000 | TAMS 3 (60%) | €3,600–€4,400 | 3–5 years |
| 30 kWp | €24,000–€30,000 | TAMS 3 (60%) | €9,600–€12,000 | 3–5 years |
| 50 kWp | €40,000–€55,000 | TAMS 3 (60%) | €16,000–€22,000 | 3–5 years |
| 100 kWp | €70,000–€100,000 | NDMG (€22,000) | €48,000–€78,000 | 6–8 years |
Installed cost on farms runs roughly €800–€900 per kWp at commercial scale, with smaller TAMS-capped systems at the higher end per kWp. Figures are estimates for 2026 and exclude battery storage, which is not covered by NDMG.
Accelerated Capital Allowance
Farms trading as a company can claim the Accelerated Capital Allowance (ACA), writing off 100% of qualifying solar and battery cost against profits in year one through the Triple-E register. Sole-trader farms should check the available capital allowances with their accountant.
Where the savings come from
Commercial electricity costs around 22c/kWh to import while exported surplus earns roughly 18c/kWh, so displacing your own farm load is worth more than exporting. Farms with strong daytime demand reach 70–90% self-consumption, which is why the returns are strong, typically a 10–15% annual return.
Roof, planning and install specifics for farms
The practical details on a farm differ from a warehouse or office. Plan for these before you commit to a system size.
| Factor | What to check on a farm |
|---|---|
| Roof structure | Older sheds may have light-gauge purlins or fibre-cement sheeting; an installer should confirm the roof carries the panel and mounting load before fixing. |
| Planning | Up to 11 kWp on an agricultural building is planning-exempt under the rooftop exemption; larger arrays or ground-mount may need permission. |
| Load matching | Match the array to your enterprise: continuous loads like ventilation soak generation all day, while peaky loads like milking or drying may benefit from a battery or diversion. |
| Grid connection | ESB Networks NC6 covers smaller systems and NC7 covers larger ones up to 200kW; inverters must meet EN 50549. |
| Orientation | East–west shed roofs spread generation across the whole day, which can suit steady farm loads better than a single south-facing pitch. |
Go deeper by enterprise type
Loads, sizing and grant strategy differ by farm type. For detailed guides, see solar panels for dairy farms, beef farms, poultry farms and pig farms. Each covers the specific load profile, sizing and TAMS 3 versus NDMG choice for that enterprise.
Farm Solar FAQ
How big a solar system does a farm need?
Most Irish farms install 11-100 kWp. An 11 kWp system suits a typical family farm and stays planning-exempt on agricultural buildings. Larger livestock units, intensive poultry or pig houses, tillage with grain drying or robotic dairy milking can justify 30-100 kWp, with TAMS 3 funding systems up to 62 kWp and the NDMG grant covering larger arrays. Sizing should be matched to your daytime loads, ideally using a year of meter data.
What grant can a farm get for solar panels?
The headline grant for farms is the TAMS 3 Solar Capital Investment Scheme, which funds a flat 60% of on-farm solar under its own ring-fenced €90,000 investment ceiling (a maximum grant of €54,000, covering systems up to 62 kWp). Above that, farms use the SEAI Non-Domestic Microgeneration Grant (NDMG) instead, up to a maximum of €162,600. You apply under one scheme, not both.
Does an 11 kWp farm solar system need planning permission?
No. Rooftop solar up to 11 kWp on an agricultural building is planning-exempt in Ireland, which is why 11 kWp is the common starting point for farms. Larger arrays beyond the exemption cap, or ground-mounted systems, may need planning permission. Your installer should confirm the exemption applies to your specific building.
Will solar cover my farm's electricity load?
Solar covers the daytime portion of farm loads directly, and most farm demand, pumping, ventilation, cooling and grain drying, is largely daytime. Where peaks fall early or late, such as dairy milking or winter livestock heating, a battery or hot-water diversion device helps shift midday surplus into those windows. Farms with strong daytime demand typically reach 70-90% self-consumption.
What is the payback on solar panels for a farm?
An 11 kWp system costs roughly €9,000-€11,000 before grant and falls to around €3,600-€4,400 after the 60% TAMS 3 grant, giving a payback of about 3-5 years. Larger TAMS-funded systems up to 62 kWp pay back in a similar range; NDMG-funded systems beyond that typically take 5-8 years. Payback is driven by self-consumption, since displacing import at about 22c/kWh is worth more than exporting surplus at about 18c/kWh.
Related Guides
Solar for Dairy Farms
Dairy farm solar: milking load, TAMS 3 grant, sizing, ROI.
Solar for Beef & Cattle Farms
Beef farm solar: pumping & lighting load, TAMS 3, sizing.
Commercial Solar Grants
SEAI NDMG up to €162,600, TAMS 3 for farms, ACA tax relief, and how to apply.
Farm Solar
Farm solar panels: TAMS 3 grant (60%), costs, and sizing by farm type.
Sources
- DAFM, TAMS 3 (Solar Capital Investment Scheme)
- SEAI, Non-Domestic Microgen Scheme (NDMG)
- SEAI, Accelerated Capital Allowance
- ESB Networks, Micro and Small-Scale Generation
Last updated: September 2026
John Rooney is the editor of Solar Info and has been covering the Irish solar energy market since 2023. He fact-checks all content against official SEAI data and maintains relationships with SEAI-registered installers across Ireland.
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