Solar Carports for UK Businesses: Benefits, Costs, and Planning Permission Explained
- Keith Lin
- Mar 4
- 4 min read
Updated: Apr 9
Last updated: 24 March 2026
Commercial solar carports are gaining traction across the UK as businesses look for practical ways to cut energy costs, meet net-zero targets, and make better use of existing car park space. Unlike rooftop systems, a solar carport is a purpose-built canopy that generates electricity while sheltering vehicles — turning an underused asset into a revenue-generating one. This guide covers what UK decision-makers need to know before committing to a project: the benefits, realistic costs, planning permission rules, and how solar carports support ESG and BREEAM compliance.
Key Benefits of Solar Carports
Solar carports deliver value on multiple fronts. The most immediate benefit is on-site electricity generation: a 50-space car park can accommodate a system of approximately 125 kWp, producing between 106,000 and 130,000 kWh per year — enough to make a measurable dent in a commercial building's electricity bill.
Beyond generation, carports protect vehicles from weather damage, which is a tangible benefit for staff, customers, and fleet vehicles. For retail, leisure, and hospitality sites, covered parking also improves the visitor experience.
There is also a brand and reporting advantage. A visible solar installation signals environmental commitment to stakeholders, tenants, and customers. For businesses reporting under SECR (Streamlined Energy and Carbon Reporting), on-site generation directly reduces Scope 2 emissions.
Unlike rooftop solar, carports do not require structural surveys of existing buildings or roof warranties to be voided. They are installed on independent foundations, which means they can be deployed on sites where rooftop solar is not feasible — for example, listed buildings, leased premises with restrictive covenants, or roofs that are structurally unsuitable.
How Much Does a Solar Carport Cost?
Installed costs for commercial solar carports in the UK typically fall between £1,000 and £1,400 per kWp. This is roughly 10–20% more than a comparable rooftop system, reflecting the additional steelwork, foundations, and structural engineering required for a free-standing canopy.
For a practical example: an 80-space car park fitted with a solar carport can generate approximately £28,000 per year in electricity savings, based on current commercial electricity rates and typical generation yields for southern England.
Under a self-funded model, payback periods generally fall between five and eight years, with the system continuing to deliver savings for 25 years or more. Businesses can also claim the Annual Investment Allowance (AIA), which provides 100% tax relief on qualifying capital expenditure for plant and machinery — including solar installations.
Since December 2023, solar canopies on non-domestic off-street car parks in England benefit from permitted development rights under Class OA of the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended).
This means that, in many cases, a full planning application is not required. However, the developer must submit a prior approval application to the local planning authority, which assesses the proposal against specific criteria including siting, design, and impact on amenity. The prior approval process typically takes up to ten weeks.
Class OA applies to car parks that serve non-domestic buildings — including offices, retail parks, distribution centres, hospitals, and leisure facilities. It does not apply to residential car parks or sites within certain designated areas (such as conservation areas, Areas of Outstanding Natural Beauty, or World Heritage Sites), where a full planning application may still be needed.
It is important to note that these permitted development rights apply in England only. Projects in Scotland, Wales, and Northern Ireland are subject to different planning regimes and should be assessed on a case-by-case basis.
Regardless of the planning route, all solar carport installations must comply with Building Regulations and relevant electrical standards (BS 7671). Grid connection applications are handled separately through the local Distribution Network Operator (DNO).
ESG, BREEAM, and Net-Zero Compliance
For organisations working toward ESG targets, BREEAM certification, or net-zero commitments, solar carports offer a measurable contribution. On-site renewable generation directly reduces Scope 2 carbon emissions under the Greenhouse Gas Protocol, which is the framework used by most UK corporate sustainability reports.
BREEAM New Construction and BREEAM In-Use assessments award credits for on-site renewable energy generation (under the Energy category). A solar carport can contribute to achieving "Excellent" or "Outstanding" ratings, particularly when combined with EV charging and energy storage.
For public sector organisations and NHS trusts working toward the Greening Government Commitments or the NHS Net Zero targets (net zero by 2040 for the NHS Carbon Footprint), solar carports on existing car parks represent one of the most practical and scalable interventions available — requiring no new land take and minimal disruption to operations.
Ready to explore solar carport options for your site? View our solar carport systems or contact us for a quotation.
About the Author
Keith Lin is the Director of KLY Solar (KLY Global Ltd), a UK supplier of solar carport structure kits for commercial project teams.
Sources:
KLY GLOBAL LTD trading as KLY Solar | Company No. 14169672
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