Do ground-mounted solar panels at your business need planning permission?

Check the planning route before committing land to a business solar array. In England, the stand-alone non-domestic permitted-development route limits panel surface area to 9 square metres, alongside other conditions [S1]. A larger field array needs a different consent assessment. Confirm landscape, ecology, drainage, access and the grid connection with your advisers. Checked October 2026.

Last checked 16 October 2026

Do ground-mounted solar panels need planning permission?

For an English business site, first distinguish a small stand-alone installation within a building’s grounds from an array occupying a field. Class K applies to stand-alone solar for microgeneration within the curtilage of a non-domestic building. It is not a general permission to cover business-owned land in panels. [S1]

Curtilage means the land legally treated as belonging with the building for this purpose. Ask your planning adviser to confirm it on a plan. Do not treat the boundary of your ownership as proof of the relevant planning boundary. Get legal interpretation checked with your solicitor.

Prepare a marked location plan and explain the intended use of the electricity. Read ground-mounted solar for farms and business for the project brief, and permitted development explained before discussing the consent route with the council.

What are England’s permitted-development limits for ground-mounted solar?

Class K has cumulative limits. The panel surface area must not exceed 9 square metres, and no array dimension, including housing, may exceed 3 metres. The installation cannot be within 5 metres of the curtilage boundary. Listed-building curtilages and scheduled-monument sites are excluded. [S1]

Height restrictions and designated-land provisions also matter. Some designated-land locations closer to a highway require a prior-approval process. Have your adviser check the full current class against a dimensioned layout; passing the area test alone is insufficient. [S1]

For a larger proposal, ask the council to identify the appropriate application and supporting reports. Request confirmation before purchasing mounting equipment or beginning groundworks. Record who is responsible for revising the layout if surveys identify a constraint.

What should your ground-mounted solar plans include?

Use a single coordinated plan showing the array, access, cable route, inverters and any other equipment. The table below is a suggested briefing list. Ask the council which reports are necessary for your site.

English solar planning guidance identifies visual impact, glint and glare, heritage and restoration among considerations for large ground-mounted schemes. A screened location still needs a complete assessment; screening does not answer every planning question. [S2]

Ask for photomontages from agreed viewpoints where your adviser considers them useful. Include seasonal changes in screening in the design discussion. Request equipment dimensions before judging whether a hedge or fence would hide the proposed installation.

Can agricultural land be used for ground-mounted solar?

English guidance asks whether agricultural land is necessary, whether poorer-quality land has been preferred and whether continued agricultural use or biodiversity improvements are possible. It also identifies the potential use of previously developed land. Your proposal needs a site-specific explanation. [S2]

Ask your adviser to document the land’s current use and the alternatives considered. If grazing is proposed, ask the designer to show how access, equipment and land management would work together. Read agrivoltaics and farmland before making grazing part of the brief.

Check land control separately. Ask your solicitor to review access, cable rights, lender requirements and restoration obligations. Compare those provisions alongside the price rather than leaving them to the end of procurement.

Do you need biodiversity and flood assessments?

In England, development subject to the statutory biodiversity gain condition must deliver at least a 10% increase in biodiversity value. Exemptions and transitional rules apply. Current guidance includes a small-site exemption introduced for certain applications, so ask your ecologist to establish scope before assuming every array needs the same process. [S3]

Request the baseline assessment early enough to influence layout. Ask who funds habitat management and who keeps the required records during operation. Avoid treating a drawing labelled wildlife area as the complete delivery plan.

Flood assessment requirements depend on location, flood zone, size and other risks identified in official guidance. Ask a drainage adviser to screen the whole proposal, including access and electrical equipment. Use the relevant national guidance and council requirements for the actual site. [S4]

Does a solar planning decision settle the grid connection?

UK Power Networks describes a separate application process for solar generation, including network assessment and any required works. Your distribution network operator (DNO), which runs the local electricity network, must confirm the process and connection conditions in its own area. [S5]

Ask the electrical designer for proposed generation power in kilowatts (kW) and predicted annual energy in kilowatt-hours (kWh). Request the allowed export level separately. See G98 and G99 grid connections; G99 is the engineering recommendation for generation connected in parallel with the distribution network. [S5]

What should you do next?

Bring a land plan, electricity-use information and the council’s initial questions, then get matched with an installer that covers your area. For Wales, use its own published stand-alone solar guidance. For Scotland and Northern Ireland, ask the relevant authority to identify its national route; do not carry England’s limits across borders. [S6]

Piggy Pineapple Ltd operates this advice and referral service. We refer enquiries and may be paid a fee. Before sharing your details, we will name the proposed installer and disclose any shareholding the owner holds in it. Read how we work for the process.