Do you need planning permission for a solar farm?
Yes — and it is granted more often than most people expect. UK councils have decided 5,837 solar applications and approved about 93% of them, in a median 2.3 months. Those are recorded outcomes from the government's Renewable Energy Planning Database — not an estimate, and not a survey of opinion.
Screen your site → Approval rates by council
Do you need planning permission for a solar farm?
Yes. A ground-mounted solar farm of any commercial scale needs full planning permission from the local planning authority. Permitted development rights cover only small installations — broadly rooftop and very small ground arrays — so any field-scale scheme goes through a full application. Since 2025 the threshold for a solar scheme to be treated as a Nationally Significant Infrastructure Project, decided by the Secretary of State rather than the council, sits at 100 MW in England. Below that, your council decides. In practice UK councils approve about 93% of the solar applications they decide, in a median of 2.3 months — figures computed from 5,837 recorded decisions, not estimated.
How likely is a solar farm to be approved?
More likely than most people assume. Across 371 UK planning authorities, 5,456 solar schemes were granted against 381 refused — an approval rate of about 93%. But the average hides real variation: among councils with a meaningful caseload, East Riding of Yorkshire (100%), Birmingham (100%), Newcastle upon Tyne (100%) sit at the permissive end, while Greenwich (54%), Malvern Hills (60%), Amber Valley (67%) refuse far more often. Check the specific authority rather than relying on the national figure.
How long does solar farm planning permission take?
The median UK authority decides in about 2.3 months, measured from the submission date to the decision date. The spread matters more than the average: North Lanarkshire decides in a median 1.1 months, while North Hertfordshire takes 20.3. Statutory determination periods are eight weeks for minor applications and thirteen for major ones, but extensions of time are routine on solar schemes, so the recorded reality runs longer than the statutory clock.
Why are solar farms refused?
Honestly: no open dataset records refusal reasons, so anyone quoting precise percentages is guessing. What the planning record and appeal decisions consistently show driving refusals is landscape and visual impact, cumulative impact where several schemes cluster in one area, the loss of "best and most versatile" agricultural land (grades 1, 2 and 3a), heritage setting, and flood risk. The first two are professional judgements no dataset can substitute for — which is why a screening tells you the constraints and the local record, and a planning consultant tells you whether the case can be won.
What is "best and most versatile" land, and does it block solar?
Best and most versatile (BMV) land means Agricultural Land Classification grades 1, 2 and 3a. National policy expects poorer-quality land to be used in preference, so a scheme on BMV needs justification — it is a material consideration rather than an outright bar, and plenty of BMV schemes are consented with good reasoning. A practical trap: the published survey often maps land as undifferentiated "Grade 3" without splitting 3a from 3b, and only 3a counts as BMV. Where that happens the honest answer is that it takes a site-specific survey to resolve, and we say so rather than guessing.
Is battery storage or onshore wind easier to consent than solar?
Battery storage behaves much like solar — about 92% approved — but takes noticeably longer, a median 6 months against 2.3 for solar, largely because of noise, fire safety and grid considerations. Onshore wind is the outlier: about 68% approved and a median 11.5 months. That gap is the practical legacy of the restrictive policy tests applied to onshore wind in England for much of the last decade, and it shows up clearly in the recorded outcomes.
What should I check before applying?
Four things, all checkable before you spend on consultants: the authority's recorded approval rate and decision times for your technology; every designation whose boundary contains your site (Green Belt, National Landscape, SSSI, conservation area, scheduled monument, nutrient-neutrality catchment); the agricultural land grade; and what happened to comparable schemes nearby — especially the refusals. Then grid connection, flood risk and topography, which drive cost rather than consent.
Figures computed from the Renewable Energy Planning Database (DESNZ, Open Government Licence v3.0), 2026 Q1 extract, over decided applications only. REPD covers schemes of roughly 150 kW and above and does not record refusal reasons. General information about how the planning system has behaved — not planning advice, and no substitute for a planning consultant on a specific scheme.
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