In England, most rooftop solar on farm buildings is permitted development under Class J of Part 14 of the General Permitted Development Order 2015 — not the householder Classes A and B. Panels must stand no more than 0.2 m proud of a pitched roof (1 m above a flat roof) and sit at least 1 m back from the edge; there has been no size cap since December 2023, but arrays above 50 kW need prior approval, and listed buildings are excluded.
The friction points are ground-mounted arrays, which need full planning permission beyond a single 9 m² stand-alone array (Class K); listed buildings, which need consent; and best and most versatile land (grades 1, 2 and 3a), where the Solar Roadmap (June 2025) asks developers to justify their choice of land. Since 31 December 2025, onshore solar in England is a nationally significant project only above 100 MW.
Wales, Scotland and Northern Ireland run their own planning systems, so check the rules for your nation before relying on permitted development.
This category covers permitted development, full planning, listed-building consent, landscape and BMV land questions, and the planning case for agrivoltaic dual use.
See our planning guide and agrivoltaics page for the foundation.
All planning & regulation articles
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Permitted Development for Farm Solar Panels 2026 (Class J)
Permitted development for farm solar panels in 2026: GPDO Part 14 Class J, the 200mm rule, ground-mounted panels, listed buildings and when to get an LDC.
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Solar Panels on Listed Farm Buildings UK | Listed Building Consent Guide
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Solar Panels for Tenant Farmers UK | FBT, AHA & PPA Options Explained
Tenant farmers face unique challenges installing solar panels. This guide covers capital grant eligibility for tenants, landlord consent requirements, FBT vs AHA tenancy rights, ownership at tenancy end, and why a PPA may be the best route for many tenant farmers.
15 April 2026 · SEO Dons
Farm Solar in National Parks & AONBs: Planning Playbook for 2026
Detailed planning guidance for farm solar inside National Parks and Areas of Outstanding Natural Beauty. What authorities accept, what they reject, and how to design a successful application.
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Planning Permission for Solar on Agricultural Land: UK Guide
Comprehensive guide to planning rules, permitted development rights, and approval strategies for farm solar installations across England, Scotland, Wales, and Northern Ireland.
25 January 2025 · SEO Dons