Agrivoltaics UK 2026 — Solar + Sheep Grazing + Crops

Published by SEO Dons · Last reviewed March 2026

Agrivoltaics — sometimes called agri-PV or dual-use solar — refers to systems where solar photovoltaic panels are installed over or between growing crops, allowing the same land area to simultaneously produce electricity and food. First proposed by German researchers in the early 1980s and developed as “solar sharing” in Japan from the 2000s, agrivoltaics has evolved from an academic concept into a commercially deployed technology attracting growing interest from UK farmers, landowners, and agricultural planners. For the current UK picture — projects, policy and planning — see our UK agrivoltaics guide, and for the evidence behind the headlines, could agrivoltaics power the UK?

The core appeal is straightforward: UK farmers face pressure on margins from all directions, while solar developers face increasingly limited land availability and community opposition to large-scale solar farms. Agrivoltaics offers a potential path that addresses both constraints — generating clean energy income without removing productive agricultural land from food production. This guide explains the technology in detail, reviews the UK research evidence, examines the commercial models emerging in this country, and outlines the practical and planning considerations for farms exploring the option.

The Scientific Evidence Base

The fundamental hypothesis behind agrivoltaics — that crops and solar panels can coexist productively on the same land — is now well supported by research. The key mechanism is partial shading. Most crop plants do not use all available sunlight for photosynthesis; indeed, many species reach photosynthetic saturation at light levels well below full midday sun. The partial shade created by elevated solar panels above crop rows can, in appropriate combinations, reduce heat stress, water evaporation, and light-induced crop damage while allowing adequate photosynthesis to continue.

The best-documented field trial is Fraunhofer ISE’s at Heggelbach, near Lake Constance, where 194 kW of semi-transparent panels on a five-metre structure covered a third of a hectare of arable land. Fraunhofer reported a land-use efficiency of 160% in 2017 and 186% in the hot, dry summer of 2018 — meaning the crops and electricity from one hectare would have needed 1.6 and 1.86 hectares if produced separately. In 2018 celery under the panels yielded 12% more than the reference field and winter wheat 3% more, while clover yielded 8% less (press release, 12 April 2019). In the UK, the published evidence is mainly from conventional solar parks: a Lancaster University and Centre for Ecology & Hydrology study of a park near Swindon found summer cooling of up to 5.2°C and drying under the panels, with less plant biomass and species diversity there (Armstrong and colleagues, 2016). Light remains the limit: a 2006 review led by Leo Marcelis found each 1% of light worth 0.7–1% of the yield of fruit vegetables. The evidence is set out in more detail in do solar panels affect crop growth?

Not all crops respond equally well. High-light crops including most grain cereals, oilseeds, and maize perform less well under partial shade, making agrivoltaics less suitable for the arable heartland of East Anglia and the East Midlands. Crops that suffer in heat and drought stand to gain most in a dry year — at Heggelbach, celery, wheat and potatoes did in 2018 — but in a normal UK season every crop gives up some yield to the light the panels take. Grazing sheep under conventional ground-mounted arrays is the simplest combination, because those panels sit too low for crops or machinery. For guidance specific to different farm types, Solar Panels For Farms UK covers agrivoltaic applications by farm type across the full range of UK agricultural operations.

Agrivoltaic System Designs

Elevated Fixed-Tilt Systems

Elevated systems raise standard panels on steel posts high enough for farm machinery to work underneath — Heggelbach’s structure is five metres tall — with rows spaced to let light reach the crop between them. The clearance and spacing are set by the machinery the farm uses and the light the crop needs, so they should come from the design for your field, not a rule of thumb.

Because the rows are spread out to let light through, an elevated system carries fewer panels per hectare than a conventional ground-mount solar farm, so its electricity output per hectare is lower; the trade-off is the farming output it keeps. For a detailed comparison with conventional ground-mount installation approaches, ground-mounted vs roof-mounted solar provides relevant context.

Bifacial Vertical Systems

An increasingly adopted agrivoltaic variant uses bifacial panels mounted vertically in east-west orientation, generating electricity from both sunrise and sunset rather than the midday peak of conventional tilted panels. The energy yield distribution through the day is flatter, which can better match some farm demand profiles. The vertical orientation leaves wide strips between the rows for machinery and crops, at the cost of some total output compared with panels tilted towards the south.

Greenhouse-Integrated Systems

Under glass the trade-off is sharper, because every unit of light the panels take is one the crop would have used. In an Italian trial (Cossu and colleagues, Applied Energy, 2014), panels on half of a greenhouse roof cut the light reaching the crop by 64% over a year. Semi-transparent and wavelength-selective panels aim to let more of the useful light through, but most are still at trial stage — see how transparent solar panels work. For glasshouse growers the practical answer today is to put the array on packhouse and store roofs: see greenhouse solar panels for where they go and which loads they can power.

Commercial Viability in the UK

The commercial case for agrivoltaics in the UK depends on four interacting variables: electricity generation income, agricultural productivity retained, capital cost premium over conventional solar or agricultural investment, and subsidy and planning framework.

On electricity generation: an agrivoltaic system’s output is worth avoided grid electricity costs and Smart Export Guarantee income, or a Power Purchase Agreement price from a commercial off-taker, and its value depends on how much of the output the farm uses itself. For agricultural businesses with significant on-site electricity consumption — dairy units, grain dryers, cold stores, irrigation systems — the self-consumption rate and therefore the financial value is higher.

On capital cost: agrivoltaic systems are currently more expensive per kWp installed than conventional ground-mount solar, reflecting the elevated mounting structure, wider post spacing, and additional civil works required. There is no official UK cost series above 50 kW, so both are priced from itemised quotes.

On land rent: conventional solar farms offer landowners a ground rent — published figures run about £850–£1,100 an acre a year; see what solar farms pay per acre and how that compares with owning the panels. An agrivoltaic system can instead be owned by the farm, which keeps both the farming and the full value of the electricity rather than a rent. Whether that beats a ground rent depends on the capital cost, how much of the power the farm uses itself and its tax position, so model both on your own figures.

Planning Policy and the Agricultural Nexus

Planning policy is the single greatest constraint on agrivoltaic deployment in the UK. Large ground-mount solar installations — even those incorporating agricultural use — are classed as major development and require full planning permission. The National Planning Policy Framework (NPPF) requires local planning authorities to give significant weight to the benefits of renewable energy, but also to protect the best and most versatile agricultural land (Grades 1, 2, and 3a).

In England a field-based agrivoltaic array is assessed as ground-mounted solar development. Keeping the land in agricultural use is something to evidence in the application — with the farming system, the machinery clearances and the expected yields — not an exemption from it, and the outcome remains case-specific.

Rooftop panels on farm buildings in England are normally permitted development under Class J (Part 14, GPDO 2015), with no capacity limit, but a field-based agrivoltaic array is not on a building, and its planning position requires case-by-case legal review. Our detailed guide on planning permission for solar panels on agricultural land covers the planning framework in detail, including the specific considerations for agrivoltaic systems.

Grant Funding for Agrivoltaic Projects

No grant for solar panels on farms is open in England. The Farming Equipment and Technology Fund (FETF) 2026 window closed at midday on 12 May 2026, and its 2023-2026 item lists did not include solar panels to power a farm. Round 2 of the Improving Farm Productivity grant covered rooftop and irrigation-reservoir solar only — ground-based arrays were excluded — and closed on 31 July 2025 with no further round announced. Capital Grants 2026 have no solar items, and Countryside Stewardship Higher Tier excludes parcels with solar panels generating electricity for use off the farm. No Welsh, Scottish or Northern Irish grant pays for solar panels either. For the reservoir option, see floating solar on farm reservoirs.

The Sustainable Farming Incentive (SFI) has no solar action, and land under a solar array has its own Rural Payments Agency land-use code (UT01), which the RPA lists as a non-agricultural use. The combination of electricity generation income and retained agricultural productivity can still create a genuinely attractive financial picture for the right farm and land type. Finance options for the higher capital cost of an elevated structure are covered in our farm solar finance guide.

UK Evidence So Far

Published UK evidence on crops grown under panels is still thin: the field results above come from Germany, and the UK study from a grazed solar park. Ask any installer proposing an agrivoltaic design for the trial evidence behind its yield assumptions, and for how the design would perform in a cool, dull season as well as a dry one.

Is Agrivoltaics Right for Your Farm?

Agrivoltaics is not the right solution for every farm. The conditions most favourable to a successful agrivoltaic project include:

Land growing shade-tolerant crops (soft fruits, vegetables, herbs, horticulture)
Livestock operations on permanent pasture with existing or planned fencing infrastructure
Farms with significant on-site electricity consumption enabling high self-consumption rates
Holdings with sympathetic planning authorities and no designation that precludes solar development
Operations with the capital or access to finance required for the higher upfront cost

Farms in East Anglia, the East Midlands, or other intensive arable areas with primarily high-light crops are generally less suitable for agrivoltaics, though not universally excluded — border strips, headlands, and areas adjacent to farm buildings can often accommodate elevated arrays without disrupting the main cropping operation.

The best starting point is a feasibility assessment from an MCS certified installer with specific agrivoltaic experience. Ask for initial guidance on system design, planning prospects and financial modelling for your specific farm.

Solar Panels For Farms UK provides specialist guidance on agrivoltaic feasibility for UK farms. It is an independent guide, not an installer: an enquiry goes to a matched MCS-certified installer covering your area, which returns a desk feasibility within 3 working days.

Ready to get a quote for your farm? Request a free feasibility study →