Solar Canopies in Scotland: Class 9M, Cost and Funding

Permitted development for car park canopies: Class 9M

The Town and Country Planning (General Permitted Development) (Scotland) Amendment Order 2024 (SSI 2024/102) rewrote Scotland's non-domestic solar rights for development begun on or after 24 May 2024. For car parks the relevant right is Class 9M, which covers installing, altering or replacing a solar canopy, and the equipment needed to operate it, within a qualifying parking area: an area whose primary use is the lawful off-street parking of vehicles, where vehicles are parked on a hard surface. The structure has to support solar panels, be open on one or more sides and be designed for vehicles to park underneath it.

A canopy is not permitted development under Class 9M if it would:

• exceed 4 metres in height, measured from the surface used for parking — or, for any part other than the canopy itself, 3 metres;
• be within 5 metres of a road;
• be inside, or within 10 metres of, the curtilage of a dwellinghouse or a building containing flats;
• be within 3 kilometres of the perimeter of an aerodrome or technical site;
• sit on the roof of a building, or on the top level of an open-top multi-storey car park;
• be in a conservation area, a National Park, a National Scenic Area, a World Heritage Site, a historic garden or designed landscape, a historic battlefield, a site of archaeological interest, or the curtilage of a listed building.

The canopy needs no prior approval; batteries do. We re-read the order on 3 November 2026: the prior approval condition in Class 9M applies only to battery storage associated with the canopy and its equipment. Before starting that part, the developer applies to the planning authority for a determination as to whether prior approval is needed for the design and siting of the batteries; if the authority makes no determination within 28 days, the work may go ahead. Each battery unit or piece of equipment housing (excluding the canopy and cabling) must not exceed 29 cubic metres, with 58 cubic metres as the combined limit. Any lighting forming part of the development must point at the parking surface and light only the immediate area.

Three points trip people up. First, Class 9M first came into force on 31 March 2023 with a definition of solar canopy whose primary use was the recharging of vehicles; the replacement in force since 24 May 2024 has no charging requirement. Second, Class 9M is the canopy right — it is separate from Class 6J, which lets panels go on a non-domestic building with no capacity limit provided nothing protrudes more than 1 metre from the building surface, and from Class 6N, which caps free-standing panels in a building's curtilage at 12 square metres in total. A ground-mounted array is not a canopy. Third, permitted development is a planning answer, not a building standards answer: the Scottish Government's Circular 2/2024 notes that permitted development may still need to meet building standards and may need a building warrant.

Where a site fails any Class 9M test, the canopy needs a planning application to the local planning authority, which will weigh it against National Planning Framework 4: Policy 11 supports solar arrays and places significant weight on a proposal's contribution to renewable energy targets. The 3 km aerodrome and technical-site buffer is the test most often missed, because it reaches well beyond airport boundaries into surrounding business parks. England works differently again — its rules are covered in our England planning guide for car park canopies. Charge points under a canopy have their own Scottish permitted development classes (Part 2D, Classes 9E and 9F); the charging side is covered on our EV integration page.

What a canopy costs and pays back in Scotland

The build cost does not change at the border. On this site's ladder a canopy runs at about £900–£1,400 per kWp installed, which at 1.7 kWp a bay is about £1,500–£2,400 per space before ground conditions, the grid connection and planning — the full breakdown is our solar canopy cost per space guide. What changes is the yield, so the payback stretches as you go north. Taking the cost page's 50-space example unchanged (85 kWp, £76,500–£119,000, 80% of the power used on site at 24p a unit and 20% exported at 12p, before tax relief):

Two Scottish adjustments sit on top of that arithmetic. Capital allowances are UK-wide, so solar's special-rate relief — the £1m Annual Investment Allowance, then the 50% first-year allowance — shortens the net payback in Edinburgh exactly as it does in Leeds. And a canopy past about 118 spaces on the mainland can carry a transmission assessment that the same canopy in England would not (below), which belongs in the programme and the budget from the first conversation with the network operator.

What a canopy generates in Scotland

Canopies are usually built at a shallow pitch so that water runs off without making the structure tall, and a shallow pitch costs output. The table uses the European Commission's PVGIS 5.3 model (SARAH3 satellite data, 2005–2023) for a 1 kWp free-standing system with 14% system losses, at a 10° canopy pitch facing south and at the tilt PVGIS finds optimal for each city.

• Size from the Scottish figure, not a UK average. Each 100 kWp of canopy at 10° gives roughly 80,500 kWh a year in Edinburgh, 79,100 in Aberdeen, 77,200 in Glasgow and 73,400 in Inverness, against about 92,000 in London. A quote that assumes 950–1,050 kWh per kWp in central Scotland is overstating generation by a fifth or more.
• The pitch penalty is real but modest. In the four Scottish cities a 10° canopy yields roughly 10–12% less a year than a panel at PVGIS's best tilt — usually a fair trade for a structure that clears vehicles without extra height.
• The business case rests on summer daytime demand. Output is concentrated between spring and autumn, so offices, retail, distribution sites and schools that use power in daylight hours get the most from every unit.

Grid connection: SP Energy Networks or SSEN

Scotland is split between two distribution network operators:

• SP Energy Networks runs the network in the Central Belt and the south of Scotland — about 2 million customers, including Glasgow, Edinburgh, the Scottish Borders and Dumfries and Galloway.
• SSEN Distribution runs the north of the central belt, from Aberdeen to Inverness, the Highlands and the islands — 797,655 customers in 2024/25.

The small-generator route under regulation 22 of the Electricity Safety, Quality and Continuity Regulations 2002 covers output of no more than 16 A per phase (about 3.68 kW) at low voltage. Every commercial canopy is well above that, so it is a G99 connection with the operator's approval before installation. Neither operator publishes a typical timescale for a connection of this size, so ask for one in writing rather than planning around a figure from another region.

Large canopies: the 200 kW transmission check

This is the grid difference that most English guidance misses. NESO requires a Transmission Impact Assessment for connections above 200 kW on mainland Scotland and above 50 kW on the Scottish islands. In May 2025 the threshold in England and Wales rose from 1 MW to 5 MW (CMP446), and that rise does not apply in Scotland. At 1.7 kWp a bay, 200 kW is roughly 118 spaces and 50 kW roughly 29, though the trigger depends on how the inverters and export are sized rather than on the panel count alone. A 150-space staff car park in Livingston can therefore face a check that the same canopy in Swindon would not.

Business rates on canopies in Scotland

Non-domestic rates are devolved, and Scotland's rules differ from England's in timing and detail:

• On-site renewable plant is left out of the valuation. SSI 2023/32 excludes plant on non-domestic property used to generate, store, transform or transmit power from wholly or mainly renewable sources — including storage batteries and EV charging plant — from 1 April 2023 to 31 March 2035. It removes qualifying plant from the valuation; it is not a blanket exemption for the site, and no primary source we found says how a canopy's steel structure is treated.
• Renewable Energy Generation Relief is aimed at properties used solely to generate power, with banded relief by rateable value for 2026-27. A canopy serving an occupied business site is not that, so do not count on it.

For how the same questions play out in England and Wales, see our guide to business rates on solar canopies.

Funding a solar canopy in Scotland

Businesses

Capital allowances are a UK-wide tax, so a Scottish company buying a canopy is in the same position as one in England: solar PV is special-rate plant, covered first by the £1m Annual Investment Allowance and then by the 50% first-year allowance — not full expensing. The Scottish-specific route that many older guides still quote has gone for solar: Business Energy Scotland's SME Loan, an interest-free loan rather than a grant, is not accepting new applications for solar PV projects and pays no cashback on batteries.

Councils, universities, colleges and other public bodies

Salix runs two Scottish routes for the public sector. The Scottish Public Sector Energy Efficiency Loan Scheme offers zero-interest loans, with projects normally paying back within 12 years at no more than £305 per tonne of carbon dioxide over their life, and Salix has announced Great British Energy money for solar under it. The Scotland Recycling Fund is open for 2026/27 applications: interest-free repayable funding from the Scottish Government, matched equally by the public body and reinvested as projects save money. Neither page mentions canopies or car parks, so confirm with Salix that the canopy structure itself is covered before relying on either.

Charities and community organisations

The CARES Let's Do Net Zero Community Buildings Fund offers non-profit-distributing Scottish charities and companies that own or lease their building grants of up to £80,000 at 80% of eligible costs, with solar PV a core measure and batteries an add-on. It is first come, first served until allocated, and Scottish Government-funded projects must make their final claim by 15 March 2027. The catch for a car park scheme is the heating requirement: the building has to have, or be installing, a heat pump, a heat network connection, direct electric heating or biomass, so a solar-only project on a gas-heated building does not qualify.

Closed or not available to canopy owners

• The Scottish Industrial Energy Transformation Fund: its fourth and last call closed in March 2025, and it never funded solar PV.
• The CARES Community Energy Growth Fund: closed to new applications.
• Home Energy Scotland: for homeowners only, not businesses.

Scotland's solar build-out

Solar is a small but fast-moving part of Scotland's renewable mix. Installed solar PV capacity grew from 264 MW in 2015 to 698 MW by Q4 2024 (Climate Change Plan monitoring report, 2025). In 2025 Scottish solar capacity grew by 14% and solar generation by 48%, the highest of the UK nations in DESNZ's regional renewables statistics. A canopy in a Scottish car park is joining a market that is growing from a low base, not one that is already saturated.

Scotland's statutory net-zero target year is 2045, and the interim percentage targets were replaced by five-year carbon budgets set as a share of the baseline — 43% for 2026–2030, falling to 6% for 2041–2045. Under section 44 of the Climate Change (Scotland) Act 2009, every public body must act in the way best calculated to contribute to those targets. For an estate team with little roof space in good condition, the car park is often the largest unshaded surface it controls.

Scottish city guides

• Solar canopies in Glasgow — SP Energy Networks area; PVGIS about 772 kWh/kWp at a 10° canopy pitch.
• Solar canopies in Edinburgh — SP Energy Networks area; PVGIS about 805 kWh/kWp at 10°.
• Solar canopies in Aberdeen — SSEN north of Scotland area; PVGIS about 791 kWh/kWp at 10°.

For a carport-style structure over staff bays, the per-space figures and the consent lines for every UK nation are on our commercial solar carport page.

Questions about solar canopies in Scotland

Sources

All checked 3 November 2026.

• Scottish GPDO Part 2I (Class 9M) as amended, SSI 2024/102 and Part 1B (Classes 6J and 6N)
• Scottish Government Planning Circular 2/2024, Class 9M annex and National Planning Framework 4
• NESO — Transmission Impact Assessment thresholds (12 May 2025)
• PVGIS 5.3, European Commission JRC (Edinburgh run; Glasgow, Aberdeen and Inverness use the same settings)
• Ofgem — SP Energy Networks and SSEN Distribution commitment report 2024/25
• Electricity Safety, Quality and Continuity Regulations 2002, regulation 22
• SSI 2023/32 — rating exclusion for onsite renewables plant and mygov.scot — Renewable Energy Generation Relief
• Business Energy Scotland — SME Loan
• Salix — Scottish Public Sector Energy Efficiency Loan Scheme and the Scotland Recycling Fund
• Local Energy Scotland — CARES Let's Do Net Zero Community Buildings Fund
• Scottish Government — SIETF
• Climate Change Plan monitoring report 2025 and DESNZ — regional renewable electricity in 2025
• Climate Change (Scotland) Act 2009, section 44 and Scottish Government — reducing emissions (carbon budgets)

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