Solar Panels for Beef & Cattle Farms in Ireland
Beef and cattle farms have a real case for commercial solar in Ireland, even though the electrical load is lower and more variable than dairy. Water pumping, yard and shed lighting, automatic scrapers, meal feeders and water heating make up the daytime demand, and big unshaded shed roofs give you the space to cover it. The TAMS 3 Solar Capital Investment Scheme pays up to 60% of the cost on systems up to 11 kWp, which keeps the payback short on a well-matched system. Compare quotes from installers who work on farms.
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
Quick Answer
Most Irish beef and cattle farms install 6-50 kWp of rooftop solar, with 11 kWp the common sweet spot under TAMS 3 (planning-exempt and up to 60% grant on agricultural buildings). Beef load is lower and more variable than dairy, so self-consumption depends on matching the array to water pumping, yard lighting and scrapers, with a hot-water diversion or battery to soak up midday surplus. An 11 kWp system costs roughly €9,000-€11,000 before grant, can fall to around €4,000-€5,000 after TAMS 3, and typically pays back in 4-7 years.
Why solar suits beef and cattle farms
A beef or cattle farm has plenty of roof and a steady, if modest, daytime electrical load. Water pumping to troughs and tanks runs through the day, yard and shed lighting covers the dark mornings and evenings of the housing season, and automatic scrapers and meal feeders cycle on a timer. None of these loads are as heavy as dairy milk cooling, so beef systems are smaller, but the demand still falls largely in daylight, which is what makes self-consumed solar worthwhile.
The honest picture is that beef load is lower and more variable than dairy. A suckler or finishing unit does not have the morning and evening cooling peaks that anchor a dairy load, so the value of a system depends on matching it carefully to your pumping, lighting and feeding pattern. A hot-water diversion device or a battery helps a lot here, soaking up the midday surplus that would otherwise be exported cheaply and shifting it into water heating or evening use.
Roof space is rarely the constraint. A modern cubicle shed, slatted house, fodder store or machinery shed 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.
Water pumping
Pumping to drinking troughs and storage tanks is a steady daytime load on most cattle farms and lines up well with solar generation.
Yard & shed lighting
Lighting, automatic scrapers and meal feeders draw power through the housing season, much of it during daylight hours.
Water heating
Wash-down and utility water heating is an ideal home for surplus midday generation via a hot-water diversion device.
What size solar system does a beef farm need?
Most Irish beef and cattle farms install between 6 and 50 kWp. 11 kWp is the common sweet spot because it is the ceiling for the TAMS 3 grant and stays planning-exempt on an agricultural building, so it is the default starting point for a typical suckler or finishing unit. Because beef load is lower than dairy, many farms sit below the 11 kWp cap and only larger finishing operations, intensive housing or significant water heating justify 20–50 kWp, where you move from TAMS 3 to the Non-Domestic Microgen Grant and may need planning for the part over the exemption cap.
| Herd Size | Typical System | Panels (approx.) | Annual Generation | Best Grant Route |
|---|---|---|---|---|
| Up to 50 cattle | 6–8 kWp | 14–18 | ~5,000–6,900 kWh | TAMS 3 (up to 60%) |
| 50–120 cattle | 11 kWp | ~26 | ~9,500 kWh | TAMS 3 (up to 60%) |
| 120–250 cattle | 15–30 kWp | 34–69 | ~13,000–26,000 kWh | NDMG |
| 250+ / intensive finishing | 30–50 kWp | 69–115 | ~26,000–43,000 kWh | NDMG |
Generation assumes the average Irish yield of around 860 kWh per kWp per year. Actual figures depend on roof pitch, orientation and shading. Because beef load is lower and more variable than dairy, a site survey and a year of meter data matter even more here, oversizing past your pumping and lighting load just pushes more cheap export rather than displacing import.
Beef farm solar grants, ACA and payback
For beef and cattle farms the headline grant is TAMS 3, not the standard SEAI grant. The TAMS 3 Solar Capital Investment Scheme funds up to 60% of the cost of on-farm solar up to 11 kWp (the higher rate applies to eligible young trained farmers and partnerships; the standard rate is 40%). Systems within that 11 kWp cap are planning-exempt on agricultural buildings, and TAMS support stacks with the Clean Export Guarantee for any surplus you do export.
Above 11 kWp the TAMS 3 cap is exceeded, 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. On a lower-load beef farm the 11 kWp TAMS route is often the better value because the grant rate is higher and the system stays planning-exempt.
| System | Gross Cost (est.) | Grant Route | Net Cost (est.) | Payback |
|---|---|---|---|---|
| 6 kWp | €5,500–€7,000 | TAMS 3 (40–60%) | €2,200–€4,200 | 4–6 years |
| 11 kWp | €9,000–€11,000 | TAMS 3 (40–60%) | €4,000–€6,600 | 4–6 years |
| 20 kWp | €16,000–€20,000 | NDMG (€6,000) | €10,000–€14,000 | 5–7 years |
| 50 kWp | €40,000–€55,000 | NDMG (€12,000) | €28,000–€43,000 | 6–7 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 pumping and lighting load is worth more than exporting. Because beef load is lower and more variable than dairy, self-consumption is usually 50–70%, so right-sizing and a hot-water diversion or battery are what protect the return.
Roof, planning and install specifics for beef farms
The practical details on a beef or cattle farm differ from a warehouse or office, and from a dairy farm. Plan for these before you commit to a system size.
| Factor | What to check on a beef farm |
|---|---|
| Roof structure | Older slatted houses and fodder stores 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 | Beef load is lower and more variable than dairy; a battery or hot-water diversion shifts midday surplus into water heating and evening use to lift self-consumption. |
| Grid connection | ESB Networks NC6 covers smaller systems and NC7 covers larger ones up to 200kW; inverters must meet EN 50549. |
| Seasonality | Housing-season loads peak in winter when solar yield is lowest, so size to the year-round pumping and lighting base rather than peak winter demand. |
Battery or hot-water diversion?
Because beef load is modest and falls away in the middle of the day, midday surplus is common. A hot-water diversion device is the cheapest way to soak it up by heating wash-down and utility water. A battery costs more but can shift power into the early-morning and evening yard and feeding loads of the housing season. On a lower-load beef farm the diversion device is often the better starting point, with a battery added only if your demand profile justifies it.
Beef & Cattle Farm Solar FAQ
How big a solar system does a beef farm need?
Most Irish beef and cattle farms install 6-50 kWp. An 11 kWp system suits a typical suckler or finishing unit and is the cap for the TAMS 3 grant while staying planning-exempt on agricultural buildings. Because beef load is lower than dairy, many farms sit below 11 kWp, and only larger finishing operations or heavy water heating justify 20-50 kWp under the NDMG grant. Sizing should be matched to your water pumping, yard lighting and feeding loads, ideally using a year of meter data.
What grant can a beef farm get for solar panels?
The headline grant for beef and cattle farms is the TAMS 3 Solar Capital Investment Scheme, which funds up to 60% of on-farm solar up to 11 kWp (40% standard rate, with a higher rate for eligible young trained farmers and partnerships). Above 11 kWp, 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 beef 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 beef 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.
Is solar worth it on a beef farm with lower electricity use?
It can be, but right-sizing matters more than on a dairy farm. Beef load is lower and more variable, so self-consumption is usually 50-70% rather than the 80-90% a dairy farm reaches. Matching the array to your water pumping, yard lighting and feeding loads, and adding a hot-water diversion device or battery to soak up midday surplus, is what keeps a beef system worthwhile.
What is the payback on solar panels for a beef farm?
An 11 kWp system costs roughly €9,000-€11,000 before grant and can fall to around €4,000-€6,600 after TAMS 3, giving a payback of about 4-6 years. Larger NDMG-funded systems typically pay back in 6-7 years. Payback is favourable mainly because of the TAMS 3 grant, and 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 Farms
On-farm solar: TAMS 3 grant, sizing by enterprise, ROI.
Solar for Dairy Farms
Dairy farm solar: milking load, TAMS 3 grant, sizing, ROI.
Farm Solar
Farm solar panels: TAMS 3 grant (60%), costs, and sizing by farm type.
Commercial Solar
Solar panels for Irish businesses: costs, NDMG grants, and ROI.
Sources
- DAFM, TAMS 3 (Targeted Agriculture Modernisation Scheme)
- SEAI, Non-Domestic Microgen Scheme (NDMG)
- SEAI, Accelerated Capital Allowance
- ESB Networks, Micro and Small-Scale Generation
Last updated: July 2026
John Rooney is the founder 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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