Shopping Centres & Retail Parks: Solar panels for dealerships

Why landlord-controlled retail load is ideal solar territory

A shopping centre or retail park carries a large, highly predictable landlord-controlled load: common-area lighting, lifts, escalators, HVAC and car-park power run through the day, exactly when panels generate. That predictability makes the load ideal for self-consumption, and self-consumption is what drives solar payback, with a typical simple figure near 5.5 years. Where a single dealership sizes its array to one showroom and workshop, a shopping-centre owner sizes to a steady common-area baseload across a large asset, and the vast roof areas and multi-storey car parks suit both large rooftop arrays and solar carports, the same forecourt-into-generation move a dealer makes, at a much bigger scale.

For institutional owners the driver is sharper than cost alone. Portfolio net-zero commitments need auditable evidence, and the MEES standard expected to rise to EPC B by 2030 directly threatens the lettability and value of leased units, so on-site solar protects the asset as well as cutting the bill. A large share of UK retail and hospitality space falls short of an EPC B today, which makes the standard a live valuation risk rather than a distant one, and an array that lifts the rating is a direct defence of the asset's worth. Green-lease and service-charge structures let landlords recover or share the investment with tenants, which is a content gap competitors barely address, and getting the structure right at the outset is what determines whether the project pays the landlord, the tenant, or both. On-site generation gives the owner a defensible, auditable position with investors and tenants alike, the same way on-site renewables now form part of a dealership's brand and ESG story.

What a typical install looks like and how we size it

For a shopping centre or retail park we usually design a system in the 250 to 2,000 kW range, which is roughly 460 to 3,700 panels across about 1,500 to 12,000 square metres of roof. A system that size generates in the region of 230,000 to 1,840,000 kWh a year and saves between 53 and 423 tonnes of CO2 annually. Sizing comes from at least twelve months of half-hourly meter data on the landlord-controlled common-area supply, which is highly predictable and ideal for self-consumption, so we can size with confidence toward the steady daytime load. The roof takes the bulk of the array, and the multi-storey or surface car park is the second surface: a solar carport adds capacity and customer EV charging that absorbs the midday peak at full self-consumption value, and on a large scheme the car park can carry a substantial share of the total generation in its own right. We model EV-charging growth into the load before settling the final figure, since customer charging across a large car park can scale quickly and is worth designing headroom for. Because the common-area load is set by the building's own services rather than by tenant trade, it is unusually steady and easy to predict, which lets us size with more confidence than at almost any other site type and keeps the share of generation that has to be exported low. The roof types vary across a multi-let scheme, from large clear-span metal to single-ply membrane on the malls, so a structural survey confirms each area can take the load, and we flag any older sections that need attention before they are loaded. A multi-storey car park deck is a particularly strong surface, since it is already engineered to carry vehicle loads and sits clear of any tenant roof, so a deck-top array or a top-level carport can be added without touching the lettable space below and without needing the consent of every tenant beneath, which keeps both the engineering and the legal work simpler than a roof spread across many demised units.

Costs, payback and tax relief

A scheme typically lands between £180,000 and £1,600,000 depending on roof and car-park scope, with a simple payback near 5.5 years. Cost per kW falls with scale, roughly £750 to £950 per kW above 250 kW and toward £600 per kW above 1 MW. Solar PV is a special-rate plant and machinery asset, so the 100% Annual Investment Allowance fully expenses the first one million pounds of qualifying spend in year one; above the cap the 50% First-Year Allowance applies, and solar does not qualify for full expensing. Larger schemes split across the AIA and the 50% FYA. The Smart Export Guarantee covers any surplus the common-area load does not absorb. Beyond grants and tax, the structural choice is who funds and who benefits: a landlord can fund the install and recover or share it through the service charge or a green-lease rent share, and a power purchase agreement or asset finance can deliver the array with little or no capex. Our cost guide works through the landlord economics, including service-charge recovery and green-lease rent share.

Funding routes in detail

The 100% Annual Investment Allowance is the headline tax route for an owner expensing the spend, with larger schemes splitting across the AIA and the 50% First-Year Allowance above the one million pound cap. The Workplace Charging Scheme supports car-park charging: administered by the Office for Zero Emission Vehicles, it pays £500 per socket and up to £20,000 per applicant from 1 April 2026, covering up to 75% of charger cost across up to 40 sockets, and it closes permanently on 31 March 2027, so apply early. The Smart Export Guarantee covers exported units, supplier-set and typically 4 to 15p per kWh in 2026. Beyond grants and tax, the defining choice in multi-let retail is the funding structure itself: a landlord can fund the install and recover or share it through the service charge or a green-lease rent share, and we model both landlord-funded and tenant-funded routes so it is clear who pays and who benefits. Where the owner prefers no capex, a power purchase agreement delivers the array at a per-kWh rate below grid, and asset finance spreads cost over 7 to 15 years and is usually cash-positive from year one. Larger owners in scope for the Energy Savings Opportunity Scheme will find on-site solar a credible recommendation an audit can identify. The choice between funding the array as the landlord and recovering it through the service charge, leaving the tenants to fund their own demised areas, or running a green-lease rent share, is the single most important decision on a multi-let scheme, because it sets who carries the capital, who keeps the saving, and how the EPC benefit is shared, and we model each route in full before any commitment is made.

Compliance and sector considerations

The points most specific to multi-let retail are metering and consent. Split landlord and tenant metering and service-charge recovery need structuring before install, and green-lease clauses and tenant consent for common-area works must be in place. Larger schemes usually carry an existing HV connection, and G99 and DNO studies are required for export. A roof structural survey precedes any loading, with the SPF1981 v3 fire-safety standard increasingly an insurer requirement and a CDM 2015 plan applying above 30 person-days. Rooftop PV is generally permitted development under Class A Part 14 of the GPDO 2015 within size limits, while a solar carport over the car park needs planning permission. The MEES EPC B standard expected for 2030 is a direct driver for leased units. We hold MCS commercial certification for SEG eligibility, NICEIC or NAPIT, RECC, TrustMark, OZEV-approved status for charging, and the ISO 9001, 14001 and 45001 standards institutional procurement expects, and large owners are likely in scope for ESOS Phase 4, with its compliance notification due 5 December 2027.

How we approach this kind of project

We size from the half-hourly meter data on the landlord-controlled common-area supply, which is the most predictable load in the sector, with EV-charging growth modelled in. We assess the car park for a solar carport alongside the roof as standard. We structure the split landlord and tenant metering, service-charge recovery and green-lease consents before any work starts, and we model both landlord-funded and tenant-funded routes so it is clear who pays and who benefits. We confirm the existing HV position and submit the G99 application and DNO study early, alongside the structural survey, since the connection is the longest item. We schedule the works to avoid peak trading and install in zones so the scheme keeps trading, with the only outage being the final grid connection booked for a quiet period, and a carport build happens in the car park with minimal impact on the malls. You receive a fixed-price proposal backed by an insurance-backed warranty, and after commissioning we provide annual operations and maintenance and 24/7 remote monitoring, so across a portfolio a single dashboard covers every asset with live generation, lifetime kWh and CO2 saved for both facilities and ESG reporting.

An illustrative example

As an illustrative composite, not a real named scheme or project: picture an institutional owner of a retail park with a large clear-span common roof and a substantial surface car park, facing a portfolio net-zero target and the prospect of MEES EPC B on its leased units. Working from the common-area meter data, a design in the region of 800 kW across the roof, with a solar carport over part of the car park, would generate a large share of the predictable landlord-controlled load on site. The owner would recover part of the cost through the service charge under a green-lease structure, claim relief under the Annual Investment Allowance, add car-park EV charging part-funded through the Workplace Charging Scheme, and report live generation and CO2 saved through a single portfolio dashboard. Across the wider portfolio the same template would be applied asset by asset, with the metering and consent structured once and reused, and the EPC uplift recorded against each leased unit as evidence toward the owner's MEES position ahead of 2030. Every figure here is illustrative and depends on the asset, tenant mix and tariff.

When you are ready, see our cost guide, map the schemes on the grants and funding page, request a free feasibility, or read the solar FAQs. Owners with grocery or motor-retail tenants may also want supermarket and convenience solar or car dealership solar.