Solar Panels for Farms in Anglesey

An independent guide to solar on farms in Anglesey and the wider Isle of Anglesey area, including Gwynedd, Conwy, Denbighshire: what it costs, the planning rules, the grid and the funding position, from official sources.

Agricultural solar panels in Anglesey

Anglesey — Ynys Môn — earned its old name Môn Mam Cymru, “the Mother of Wales”, because its low-lying, fertile fields fed the whole country for centuries. That same flat, open topography is exactly what makes the island one of the best places in Wales for agricultural solar. Holdings here run to beef and sheep across the upland fringes, dairy on the better grassland around Llangefni and the central plain, and arable on the drier eastern ground — and every one of those enterprises now runs on parlours, grain dryers, milking robots, slurry pumps and refrigeration that draw power day and night. With farm electricity standing imported off the grid at 28-32p/kWh, a roof-mounted array that generates at an effective 6-9p/kWh over its life turns a steel barn roof into the cheapest energy the farm will ever buy.

The numbers stack up better here than most Welsh farmers expect. Despite the reputation for rain, Anglesey records some of the highest annual sunshine totals in Wales — coastal, exposed and clear of the mountain shadow that clips inland Gwynedd — giving roughly 950-1,000 kWh of generation per kWp installed each year. Your distribution network operator is SP Energy Networks (SP Manweb), who run every grid connection on the island, and well-sited rooftop projects on Anglesey typically clear their connection without the reinforcement costs that plague constrained rural networks. Pair strong irradiance with self-consumption from a livestock or dairy operation that uses power around the clock and the case strengthens, because payback depends on how much of the output the farm uses itself.

Farm solar across Anglesey by district

Anglesey’s farming character shifts across the island, and so does the right system size. The table below maps the dominant enterprise and a representative project for each main area.

Arable and dairy holdings tend to pay back fastest because grain dryers, ventilation, milk cooling and robotic milking match generation to demand almost hour-for-hour, so the farm uses more of its own output. Sheep and beef units with lighter year-round loads use less of it on site, which is where a battery or a sensible export profile comes in.

Grants and tax relief for Anglesey farms

Anglesey is in Wales, so the funding picture is different from England — there is no FETF here, and no Welsh grant pays for solar panels. The Farm Business Grant and the 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. What Wales does offer is a loan: the Development Bank of Wales’s Sustainable Agriculture Loan Scheme, a one-year pilot from 1 July 2026, lends £25,001 to £1 million at a fixed 3% for renewable energy generation for on-farm use.

Two further measures apply:

• 100% Annual Investment Allowance (AIA) — the full cost of a qualifying solar system can be written off against taxable profits in the year of installation, so a farm paying tax effectively recovers a large slice of the capital cost.
• Smart Export Guarantee (SEG) — paid by licensed suppliers for every unit you export to the grid, monetising generation your farm can’t use on the day.

For cost, the reference point is DESNZ’s Solar PV cost data for 2025/26: a median installed price of £1,262 per kW for 10–50 kW systems in Great Britain, including VAT where charged and excluding batteries. See our farm solar grants guide for the current scheme detail and deadlines.

Planning and grid in Anglesey

Anglesey carries an Area of Outstanding Natural Beauty (AONB) designation along much of its coastline, and there is no National Park on the island itself (Eryri/Snowdonia sits across the water in neighbouring Gwynedd). For the overwhelming majority of farm projects this changes nothing: roof-mounted solar on existing agricultural buildings is permitted development in Wales under Part 43 of the Welsh GPDO — no capacity limit and no prior approval, provided the panels stand no more than 20 cm proud and at least 1 m from the roof edge — so a parlour-roof, grain-store or general-purpose-shed array can usually proceed without a full planning application. Close to a listed structure such as the historic core of Beaumaris, it is worth a quick confirmation with Cyngor Sir Ynys Môn before installing.

Ground-mounted arrays are a different matter. A field-scale ground mount — particularly within the coastal AONB — will need a full planning application, and the council will weigh landscape and visual impact carefully. Where you have spare roof, roof-mount first; reserve ground mount for holdings where the steel simply isn’t available. On the grid side, SP Energy Networks (SP Manweb) handles every connection on Anglesey. Systems are notified or approved through the G99 process: smaller arrays under the relevant export threshold can run on a fast-track G99 notification, while larger commercial systems need a full G99 application and connection offer. The matched installer should handle this paperwork end to end, and on Anglesey’s relatively healthy network most farm projects connect without reinforcement charges.

Typical Anglesey farm solar projects

Rather than fabricate a single named farm, here is the realistic shape of three enterprise types found across Ynys Môn — representative ranges, not a specific holding’s accounts.

Dairy unit near Llangefni (100-150 kWp). A milking herd with a parlour, bulk tank and youngstock sheds carries a heavy, steady daytime and overnight load. A parlour-and-shed roof array of this size offsets the bulk of milk-cooling and pumping demand.

Beef and arable holding on the eastern plain (40-90 kWp). Grain stores, dryers and general sheds give plenty of south-facing roof. A system this size matches generation to harvest-season drying loads and year-round handling.

Upland sheep and beef unit near Amlwch (20-50 kWp). Lighter base load, but lighting, water pumping, handling systems and a farmhouse still add up. A modest barn-roof array suits it, and a small battery to capture overnight self-consumption raises the share of output the farm uses itself.

Every one of these starts the same way: your half-hourly meter data goes to a matched MCS-certified installer covering Anglesey, which returns a desk feasibility within 3 working days. For the full cost breakdown by system size and roof type, see our agricultural solar panel cost guide.

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.