Solar Panels for Farms in County Down

An independent guide to solar on farms in County Down and the wider County Down area, including County Armagh, County Antrim, Republic of Ireland (Louth): what it costs, the planning rules, the grid and the funding position, from official sources.

Solar panels for farms across County Down

County Down is one of Northern Ireland’s most diverse agricultural counties — from the intensive dairy and arable lowlands of the Lagan Valley, through the mixed enterprise farms of Lecale and Ards Peninsula, to the upland sheep and beef of the Mourne Mountains. The county’s 532,000 residents spread across Belfast’s eastern hinterland, the historic market towns of Newry, Downpatrick, Banbridge and Newtownards, and dozens of farming villages around Strangford Lough.

SolarPanelsForFarms.uk is an independent guide, not an installer, for dairy, beef, sheep, arable, mixed and horticultural farms across the whole of County Down.SolarPanelsForFarms.uk is an independent guide, not an installer: send your details through the quote form and we will reply by email.

The rules differ outside Great Britain: the Northern Ireland farm solar guide.

County Down’s farming landscape

The Lagan Valley in the north supports intensive dairy and arable farming — Friesian-Holstein dairies with modern portal-frame parlours, whose large single-span roofs suit solar once a structural check confirms they can carry the load.

The Ards Peninsula is a narrow coastal strip between Strangford Lough and the Irish Sea, with mixed dairy and arable on sheltered land. Strong solar irradiance (1,000+ kWh/kWp) and significant pack-house and storage infrastructure for the Comber and Greyabbey horticultural growing belt.

The Lecale region around Downpatrick supports mixed dairy and beef on glacial drumlin landscape — typically smaller farms (80–250 acres) but with strong commitment to direct sales, farm shops and added-value processing. Solar credentials matter commercially for farm-shop branding.

The Mourne foothills and Slieve Croob upland support extensive sheep and beef farming — Scottish Blackface and Suffolk-cross flocks on improved hill pasture. AONB designation across the Mournes constrains visual impact for ground-mount. Roof-mounted PV on existing barns is permitted development under Part 37 only as microgeneration, up to 50 kW; larger systems need planning permission.

South Down towards Newry and Crossmaglen supports mixed dairy and arable on richer south-facing soils, with growing horticulture and poultry production near Banbridge.

Grid connection — NIE Networks

All County Down farm solar projects connect through NIE Networks. Microgeneration up to 3.68 kW single-phase or 11.04 kW three-phase connects under G98/NI — installed first, then notified; anything larger goes through G99/NI and needs NIE Networks’ approval before installation. The Mournes and Ards Peninsula areas have historically been moderately grid-constrained; the planned 2026–2028 reinforcement program improves export capacity for larger projects.

Funding for County Down farm solar

The scheme-by-scheme position for the whole of Northern Ireland, including the DAERA item lists and the tax relief that does apply, is on our grants for solar panels in Northern Ireland page.

No DAERA farm scheme pays for solar panels: the Sustainable Farming Investment Scheme did not list them in its first round, which closed on 3 September 2026, and the Farm Business Improvement Scheme – Capital closed in 2022 and excluded renewable energy. There is no “DAERA Farm Energy Efficiency Scheme”. Power NI’s NISEP-funded grant for business solar PV (20% of the cost, the applicant paying 80%, with the solar grant capped at £30,000) has closed for applications for 2026/27; Power NI expects the next round to open in April 2027, subject to funding approval. Northern Ireland has no Smart Export Guarantee (a Great Britain scheme) and the NI Renewables Obligation is closed to new generation, but farms are paid for export: Power NI’s microgeneration export tariff is 11.88p per kWh from 1 October 2026 to 30 September 2027, set by the supplier and reviewed each year. Other suppliers set their own rates, so ask yours.

Frequently asked questions

Do County Down farms qualify for FETF or other UK mainland grants?

No. FETF is England-only, its 2026 window closed on 12 May 2026, and its item lists did not include solar panels to power a farm. No DAERA farm scheme pays for solar panels either: the Sustainable Farming Investment Scheme did not list them, and there is no “DAERA Farm Energy Efficiency Scheme”. Power NI’s NISEP-funded grant for business solar PV (20%, capped at £30,000) has closed for its 2026/27 round, with the next expected in April 2027, subject to funding approval.

Can I install solar on a Mournes AONB farm?

Roof-mounted PV on an existing agricultural building is permitted development under Part 37 only as microgeneration, up to 50 kW; a larger system needs planning permission. Ground-mounted arrays need full planning with landscape and visual impact assessment.

How does NIE Networks compare to GB DNOs for connection timescales?

Since 1 May 2026 NIE Networks has offered a G99/NI fast track for installations up to 60 A per phase with export held to 16 A per phase, but approval is still needed before installation; most farm systems use the full G99/NI process. NIE has invested in dedicated agricultural renewable energy capacity since 2022, materially improving response times.

Is solar viable on the Ards Peninsula given the coastal climate?

Yes. The Ards Peninsula actually has slightly higher annual irradiance than inland County Down (~1,020 kWh/kWp) due to lower cloud cover. Salt corrosion on coastal installations is managed with marine-grade mounting and inverter housings.

Get a County Down farm solar quote

SolarPanelsForFarms.SolarPanelsForFarms.uk is an independent guide, not an installer: send your details through the quote form and we will reply by email.

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For costs by system size see what agricultural solar panels cost; for funding, farm solar grants and capital allowances; for the regional picture, farm solar by UK region.