Solar Panels for Farms in Powys
An independent guide to solar on farms in Powys and the wider Powys area, including Ceredigion, Carmarthenshire, Monmouthshire: what it costs, the planning rules, the grid and the funding position, from official sources.
Solar panels for farms across Powys
Powys is Wales’ largest county by area (5,179 km²) and the heartland of Welsh hill farming, supporting over 5,000 farm holdings dominated by sheep (Powys carries more breeding ewes than any other UK county), beef cattle, and upland mixed operations. DEFRA and Welsh Government data show Powys hill farms consume 35,000-70,000 kWh/year, with electric fencing, water pumping for remote troughs, and winter livestock housing driving costs. The county receives 850-950 kWh/m²/year horizontal irradiance — lower than English Midlands but valley floors around Welshpool, Newtown, and Builth Wells achieve 920+ kWh/m². Crucially, Powys farms face some of the UK’s highest electricity unit costs due to remote rural grid connections, making solar payback competitive despite lower yields.
MCS-certified installers deliver solar PV across Powys for dairy, livestock, arable, poultry and mixed enterprises. SolarPanelsForFarms.SolarPanelsForFarms.uk is an independent guide, not an installer: send your details through the quote form and we will reply by email.
Local challenges to plan around
- Bannau Brycheiniog (Brecon Beacons) National Park covers the southern county — roof-mounted agricultural solar on existing farm buildings is permitted, but ground-mount arrays require a full Landscape and Visual Impact Assessment and National Park Authority approval
- Planning in Powys follows Welsh national policy (Future Wales: The National Plan 2040 and Planning Policy Wales); panels on the roof of a farm building are usually permitted development under Part 43 of the Welsh GPDO (microgeneration, defined by reference to the Energy Act 2004 as up to 50 kW electrical; confirm larger arrays with the planning authority)
- Remote hill farms above 300m around Radnor Forest, Elan Valley, and the Cambrian Mountains may need single-phase to three-phase grid upgrades for systems over 30kW
- The Shropshire-Powys border area (Welshpool, Montgomery, Kerry) benefits from proximity to English grid infrastructure with typically faster connection timelines
- No Welsh grant pays for solar panels; the Sustainable Agriculture Loan Scheme (Development Bank of Wales, launched 1 July 2026; £25,000 to £1 million at a fixed 3% for on-farm renewable generation) is taking registrations of interest rather than applications
Seasonal and irradiance profile
Powys valley floors (Severn, Wye, Ithon, Irfon) receive good solar exposure with the Welshpool-Newtown corridor achieving the best yields in the county. Hill farms above 250m face 8-15% reduced output compared to lowland sites, but cooler temperatures improve panel efficiency and offset some altitude losses. Spring lambing (Feb-Apr) drives high electricity demand for heat lamps, CCTV monitoring, and water heating — coinciding with rapidly increasing solar generation. Summer shearing and dipping operations on hill farms benefit from portable solar-powered systems. The long Powys winter (Nov-Feb) requires battery storage for reliable power to housed livestock.
Recent Powys installations
SolarPanelsForFarms.uk does not publish customer case studies.
Frequently asked questions
Can I install agricultural solar panels in the Brecon Beacons National Park?
Roof-mounted agricultural solar on existing farm buildings within Bannau Brycheiniog (Brecon Beacons) National Park is generally permitted development under Part 43 of the Welsh GPDO — no prior approval and no kW figure in Class A itself (Part 43 covers microgeneration, defined by reference to the Energy Act 2004 as up to 50 kW electrical, so confirm a larger array with the planning authority), provided panels stand no more than 20 cm proud and at least 1 m from the edge. Ground-mount arrays require Landscape and Visual Impact Assessment and National Park Authority approval — the process typically adds 4-6 weeks.
How much does agricultural solar cost for a Powys hill farm?
A typical Powys hill farm (500-1,500 acres, sheep and/or beef) usually needs a 80-130kW system. For a benchmark, DESNZ Solar PV cost data for 2025/26 put the median installed price of a 10–50 kW system in Great Britain at £1,262 per kW, including VAT where charged and excluding batteries. No Welsh grant pays for solar panels. Despite lower irradiance than English counties, Powys farms pay higher electricity unit rates on rural tariffs — payback depends on how much of the output the farm uses itself, and our cost guide shows the arithmetic.
Do remote Powys farms need grid upgrades for solar?
Often. Many hill farms have a single-phase supply, which limits how large an array can connect without an upgrade, and anything above 16 A per phase (3.68 kW on a single phase) needs a G99 application. Powys is served by two network operators — National Grid Electricity Distribution (formerly Western Power Distribution) and SP Energy Networks — and the farm’s supply number (MPAN) shows which: a core starting 21 is NGED’s South Wales area, 13 is SP Energy Networks’ Manweb area. The operator’s connection offer covers the technical design, any wayleaves and the timetable. For very remote sites, off-grid solar and batteries for specific loads such as water pumping and electric fencing are an alternative.
What grants are available for Welsh farms installing solar panels?
No Welsh grant pays for solar panels: the Farm Business Grant and Sustainable Production Grant closed with the 2014–2020 programme, and Small Grants – Efficiency and its successor, Capital Production and Efficiency (open 28 July 2026 to March 2027), list only a solar-powered fencing energiser and a solar-powered livestock water pump. The Sustainable Agriculture Loan Scheme (Development Bank of Wales, launched 1 July 2026) is designed to lend £25,000 to £1 million at a fixed 3% for renewable energy generation for on-farm use but is taking registrations of interest rather than applications as of 3 November 2026, and most farms can deduct the whole cost in year one through the £1 million Annual Investment Allowance.
Get a Powys farm solar quote
SolarPanelsForFarms.uk is an independent guide, not an installer: send your details through the quote form and we will reply by email.
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.
Postcode districts in Powys
- LD1 1
Nearby county guides
Powys farm solar — frequently asked questions
How much do solar panels cost for a farm in Powys?
DESNZ's Solar PV cost data for 2025/26 put the median installed price of a 10–50 kW system at £1,262 per kW across Great Britain, including VAT where charged and excluding batteries; larger systems usually cost less per kW. At that median a 50 kW barn roof in Powys would cost about £63,100 before tax relief — your own quotes will vary with roof type, access and grid work.
What grants are available for farm solar in Powys?
No Welsh grant pays for solar panels on farms as of 3 November 2026: Small Grants – Efficiency and its successor, Capital Production and Efficiency, list only solar-powered fencing energisers and water pumps. The Sustainable Agriculture Loan Scheme, run by the Development Bank of Wales, is designed to lend £25,000 to £1 million at a fixed 3% for renewable energy generation for on-farm use, but it is taking registrations of interest rather than applications. Capital allowances apply.
How do I work out the payback on farm solar in Powys?
From your own figures rather than a rule of thumb. Twelve months of half-hourly meter data shows how much of the output the farm would use itself — worth your import price per kWh — and how much it would export, which earns far less. Set that against the installed cost after tax relief. PVGIS, the European Commission's free solar model, gives the expected generation for a roof in Powys; our cost guide shows the arithmetic.
Do I need planning permission for farm solar in Powys?
Usually not for panels on the roof of a farm building. Wales's own permitted development order (Part 43) allows solar PV on non-domestic buildings with no prior-approval step, provided panels stand no more than 20 cm proud and at least 1 m from the roof edge. Class A sets no kW figure of its own, but Part 43 covers microgeneration, defined by reference to the Energy Act 2004 as up to 50 kW electrical, so confirm a larger roof array with the local planning authority before relying on permitted development. Listed-building curtilages and sites within 3 km of an airport are excluded, and a larger ground-mounted array needs a planning application to Powys Local Authority.
Who installs farm solar in Powys?
SolarPanelsForFarms.uk is an independent guide, not an installer. If you ask for a feasibility, we reply by email to talk through your farm.