Service Specialism

Commercial Solar Carport Installation

End-to-end commercial solar carport delivery for businesses: feasibility, design, DNO, planning, finance, install, O&M.

Free Feasibility Study View Costs

200-2,500 kWp typical 150-1,500 spaces 4-7 years payback

At a glance

90/mo

UK search demand for "commercial solar carport"

25 yr

Performance-warranted panels

100%

AIA first-year tax relief

G99

Grid-connected by default

Commercial solar carports are large-scale carport projects for businesses, institutions and public-sector estates. Where a domestic solar carport might be 5-15 kWp covering 4-8 bays, commercial solar carports start at 100 kWp (around 70 bays) and routinely run to 2,500+ kWp on the largest retail and logistics sites. The economics, planning and finance considerations are materially different from domestic.

Why it works

The Five Reasons Commercial Solar Carport Make Commercial Sense

Materially better unit economics

At 200+ kWp, per-kWp install costs drop to £950-£1,100 turnkey — driving 25-year IRRs of 14-22%, comfortably ahead of most commercial capex projects.

Annual Investment Allowance

Commercial buyers can claim 100% first-year capital allowances on solar plant and machinery up to £1m AIA per group (rolling £1m permanent from April 2023). Carports above £1m benefit from the Super Deduction's successor: 50% first-year allowance.

PSDS access for public sector

Public Sector Decarbonisation Scheme rounds have allocated £4.5bn since 2020. Solar carports for NHS, schools, councils and universities are squarely within eligible scope.

EV grant stacking

OZEV Workplace Charging Scheme (WCS) covers £350/socket up to 40 sockets, stackable with private capex or PSDS — typical commercial EV-integrated carport projects recover £14,000 of OZEV grant.

ESG and reporting

Commercial solar carports produce hard SECR, CSRD and TCFD data: tonnes CO₂e avoided, MWh self-consumed, Scope 2 reduction — the kind of measurable progress investors and regulators want to see.

System sizing

How Big Should Yours Be?

Commercial carport sizing usually starts with a question other than 'how big': it starts with how much do you spend on electricity. We typically right-size systems for ~70-80% self-consumption at site level. For a £150k/yr commercial electricity bill at 47p/kWh, that's ~320,000 kWh/yr to self-consume — ~400 kWp installed (assuming 85% solar fraction at site).

Site size	Bays	System (kWp)	Annual yield (kWh)	Capex (turnkey)
Small	50	75	~64,000	£95k-£115k
Medium	150	225	~191,000	£245k-£290k
Large	300	450	~382,000	£430k-£510k
Estate	750	1,125	~957,000	£1.0m-£1.2m

Delivery

Step-by-Step Process

Five phases from feasibility to switch-on.

Strategic feasibility

30-day study including site visit, structural assessment, energy modelling (hh-data), DNO capacity check, planning risk score, and finance options matrix.

Design and consents

Detailed design, planning application, building regulations, DNO G99 connection agreement (8-16 weeks).

Procurement and commitment

Tier-1 panel and inverter procurement (Trina/Longi/JinkoSolar + SolarEdge/SMA/Sungrow), commit-to-build, finance drawdown.

Build and commissioning

6-16 weeks depending on system size. Phased delivery on operating car parks; full closure on greenfield.

Operate and maintain

MCS handover, monitoring portal, optional 25-year O&M wrap (we recommend taking it — your facilities team is unlikely to want a new PV asset class to manage).

Finance

Three Routes to Pay For Your Commercial Solar Carport

Commercial carport finance is genuinely flexible. Direct capital works when AIA is available — 100% first-year tax relief on a £400k carport claws back ~£100k of corporation tax in year one. Asset finance spreads over 5-7 years; rates currently 7-9.5% APR. PPAs have come back into vogue post-2022 energy crisis — we offer 15-25 year PPAs at 14-18p/kWh fixed (vs grid 38-52p/kWh). Lease structures suit public-sector buyers who cannot capitalise PV assets.

See grants & funding routes

Common questions

Commercial Solar Carport FAQs

Is a commercial solar carport tax-deductible?

Yes — solar panels, inverters and structural carport components qualify as plant and machinery under HMRC CA21010. Annual Investment Allowance (100% first-year, currently up to £1m) applies. For projects above £1m, the 50% special-rate first-year allowance applies to the balance. Always confirm specifics with your accountant.

What's the difference between commercial solar carport and rooftop solar?

Carport projects typically have higher £/kWp install costs (£950-£1,300 vs £700-£900 rooftop) because of the steel structure, planning, and groundworks. They're offset by (a) better access for installation and maintenance, (b) bifacial yield bonus, (c) ability to integrate EV charging at zero structural cost, and (d) commercial visibility / staff perk that rooftop doesn't deliver.

Do you handle commercial solar carport planning?

Yes — every commercial project includes full planning service: pre-application consultation with the local authority, full planning application, planning committee management if it goes to committee. 32 projects delivered, 100% planning success rate.

Can a commercial solar carport be financed via PPA?

Yes. We offer 15-25 year PPAs at fixed kWh prices typically 25-40% below grid retail rate at signing. The PPA company funds the entire capex. You sign a power-purchase agreement; we install, operate, maintain. Best for non-tax-paying buyers (public sector, charities) or for buyers who want zero balance-sheet impact.

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