Solar canopy installers, FAQs

Usually not full permission. Since 21 December 2023, solar canopies over non-domestic off-street parking in England are permitted development under Class OA of the GPDO, provided no part is over 4m high and it is more than 10m from any dwelling. You do need a prior-approval application — the council assesses siting, design, appearance and glare on neighbours, and can take up to around 8–10 weeks. Listed buildings and scheduled monuments are excluded and need full consent, and Wales, Scotland and NI still require planning permission.

In most cases a domestic solar carport is permitted development as an outbuilding. It must sit behind the principal elevation (rear or side), be no more than 4m high — dropping to 3m within 2m of a boundary — and, with any other outbuildings, cover less than 50% of your garden. Listed buildings, conservation areas and National Parks lose some rights and often need a planning or listed-building application, so we always check your local authority's position first.

As a rule of thumb, commercial solar carports run about £900–£1,400 per kWp at scale, or roughly £6,000–£12,000 per parking bay once you include groundworks, the steel frame, panels and electrical connection — materially more than rooftop solar (£700–£1,050 per kWp) because the structure is around 45% of the cost. Smaller schemes run £1,200–£3,000 per kWp. Per-bay cost falls as bay count rises, so a 100-bay car park is far better value per kWp than a 10-bay one.

In the UK a single covered bay typically carries about 2 kWp of panels and generates roughly 1,500–2,700 kWh a year at the national yield of ~900–950 kWh per kWp. A domestic 6.5 kWp carport produces around 5,500 kWh annually. Bifacial modules recover an extra ~5–12% from light reflected off the tarmac below. Actual output depends on orientation, tilt, shading and bay count, which we model for your specific site before quoting.

Solar-only payback is typically 8–12 years — longer than rooftop's 4–6 years because of the steel structure and foundations. But it falls sharply with high daytime self-consumption, battery storage, and EV charging underneath, where solar at ~10p/kWh displaces grid electricity at 30–47p; with EV revenue, 7–11 years is common. A grant or zero-capital PPA changes the picture entirely by removing the upfront cost.

Yes — pairing panels overhead with a charger below is the ideal use of the space. A smart charger prioritises free solar over grid import, and self-consumed solar is worth roughly twice exported solar. It works best for 7kW and 22kW AC charging; standalone 50kW+ DC rapid chargers draw more than a canopy can supply, so those use the grid plus a battery. Surplus you can't use is sold under the Smart Export Guarantee.

For businesses, the main levers are the £1m Annual Investment Allowance and the 50% first-year allowance on the PV (solar is special-rate, so it does not get full expensing), plus the business-rates exemption and SEG export income. EV charging under the canopy can claim the Workplace Charging Scheme (up to £500/socket). The public sector uses Great British Energy capital and Salix loans. Domestic carports get 0% VAT to March 2027. We map the routes that apply to your site.

Expect a layered warranty. Panels usually carry a 25-year performance warranty and a 10–15 year product warranty; glass-glass and BIPV glazing is commonly warranted around 25 years. The galvanised steel structure is designed to Eurocode standards for a 25-year-plus service life, and inverters typically have 5–12 year cover. We back the whole installation with our own workmanship guarantee — the exact figures are on your quote.

Standard framed panels have an opaque backsheet and are the lowest-cost, highest-output choice. Glass-glass modules sandwich the cells between two panes of glass — more durable, better on exposed sites, and available semi-transparent (letting through roughly 10–60% of light) for a lighter, architectural canopy over walkways or courtyards. Bifacial glass-glass also captures reflected light off pale surfaces below. We match the module to the setting and budget.

Two main options. Ground screws are steel piles driven into the ground, each supporting 2+ tonnes; they suit around 90% of sites, install quickly and leave no wet concrete. Where the ground can't be penetrated — over services, membranes or contaminated land — we use ballasted foundations, where columns bolt to concrete or steel bases held by weight alone. Both are engineered to Eurocode wind and snow loads, confirmed by a ground survey.

Very much so. A school solar canopy does three jobs at once: it shelters playgrounds, walkways, dining areas or cycle stores; it generates on-site electricity that cuts bills and exports the surplus; and a live-generation dashboard becomes a teaching tool. Shading classrooms and play areas also reduces summer overheating. We design to the 4m Class OA height rules, schedule around term time, and use DBS-checked crews, with Great British Energy and Salix funding routes for the capital.

The on-site build is quick — a small domestic carport in a few days, a modest commercial canopy in one to three weeks depending on bay count and EV works. The longer items are the paperwork: Class OA prior approval (up to ~8–10 weeks) and the G99 DNO connection (4–12 weeks). We run these in parallel from day one, so realistically expect roughly 3–5 months from go-ahead to energised for a commercial scheme.

Yes. We can retrofit a purpose-built solar canopy over existing bays, or specify solar-ready cycle shelters and covered walkways. The key checks are ground conditions for the foundations, the DNO capacity at your site (which sets how much you can export), and Class OA compliance on height, glare and drainage. Retrofits suit offices, retail, leisure and public-sector car parks that already have the tarmac and want shade, EV charging and cheaper power without losing spaces.