Car Dealerships & Showrooms: Solar panels for golf clubs

Why car dealership and showroom solar mirrors the daytime case for golf clubs

Car dealerships and showrooms share the daytime demand pattern that makes solar panels work for golf clubs. Large glazed showrooms, workshop equipment and forecourt lighting create a high load through the working day, and that is precisely when panels generate, so the share of power used on site tends to be high and the return tends to be quick. A dealership is a daytime business with big, simple roofs and a forecourt, which is structurally not unlike a clubhouse with outbuildings and a car park. The principle a club should take from it is straightforward: where your demand sits in daylight hours, solar self-consumption does the heavy lifting on payback, and the case does not have to rely on export income.

Dealerships add one more pressure that increasingly shapes the design. EV-franchise manufacturers can set on-site renewables and customer charging as a brand standard, so demonstrator and customer EV charging absorbs solar generation at full self-consumption value, the most valuable kWh on the system. Big flat showroom and workshop roofs and forecourt canopies suit rooftop PV and solar carports, giving plenty of surface to work with. For any operator weighing solar across mixed buildings, the dealership shows how solar and EV charging are best designed together rather than as separate projects, and how a manufacturer's requirement can be turned into a genuine cost saving rather than just a compliance box.

What a typical install looks like and how it is sized

A system for a dealership or showroom usually lands in the 50 to 400 kW range, which is roughly 92 to 740 panels across about 400 to 2,800 square metres of roof. A system that size generates in the region of 46,000 to 370,000 kWh a year and saves between 11 and 85 tonnes of CO2 annually. Sizing is driven by the daytime load of showroom lighting, workshop equipment and forecourt power, plus growing demonstrator and customer EV charging, so it is worth gathering at least twelve months of half-hourly meter data and modelling EV growth before final sizing.

Where roof area is the constraint, forecourt canopies and car-park solar carports add capacity and double as a visible sustainability statement at the entrance, which sits well with the brand standards manufacturers may expect. Because the workshop and showroom run a strong, steady daytime load, a system can be sized with confidence toward self-consumption rather than leaving it to export a large surplus. A structural survey should confirm the roof can carry the array before the design is finalised, and the EV chargepoints are best sized and placed as part of the same scheme so the daytime charging demand is captured by the array.

The half-hourly data shows how much of the generation the site will use rather than export, and on a dealership with a busy workshop and a well-lit showroom that share is usually high. Demonstrator and customer charging then lifts it further, because each car plugged in at midday consumes solar that would otherwise have been exported at a lower rate. The expected growth in that charging demand is worth modelling before settling on a final size, since EV-franchise volumes are rising and a manufacturer standard can set a minimum number of sockets. The aim is a system matched to the dealership's real daytime demand, including the chargers, so the array works hard rather than spilling surplus to the grid.

Costs, payback and tax relief

A dealership project typically lands between £45,000 and £350,000 depending on site size and surface mix, with a simple payback near 5.5 years. The 100% Annual Investment Allowance covers the first million pounds of qualifying spend at 100%, worth up to a quarter of the project value back in tax for a company, using the AIA or the 50% First-Year Allowance because solar is a special-rate asset that does not qualify for full expensing.

The Smart Export Guarantee pays for any surplus, though strong daytime self-consumption keeps export modest, which means the return is driven mostly by avoided import, the more reliable side of the case because it is not exposed to changing export tariffs. For groups that prefer not to commit capital, a power purchase agreement delivers day-one savings with no capex by charging per kWh consumed below the grid rate, asset finance spreads the cost over seven to fifteen years on balance sheet and is usually cash-positive from year one, and an operating lease gives a predictable per-site monthly cost across a multi-dealership group. Each route is worth modelling in a proposal so the group can see who pays, when, and what the net position is in year one. Our cost guide works through the numbers for different dealership sizes and the funding routes.

Funding routes in detail

The Annual Investment Allowance is the main route, covering the first million pounds at 100%, with the 50% First-Year Allowance above the cap for special-rate spend. The Smart Export Guarantee covers exported power at a supplier-set rate, from around 3p to 13p per kWh at the time of writing, with the better fixed rates around 12 to 13p, and needs a smart meter recording half-hourly export. The Workplace Charging Scheme may be relevant here, because it can support staff and fleet chargepoints that pair directly with PV. A business applicant's chargepoints may only be used by its own staff and fleet (local residents may use them outside working hours), so a dealership should check which applicant type it is, and customer charging should not be assumed to qualify. From 1 April 2026 the scheme pays £500 per socket (£350 before), covering up to 75% of purchase and installation cost and capped at 40 sockets per applicant, and it is open until 31 March 2027, so applications should go in well before then.

For larger dealership groups that are large undertakings, with 250 or more UK employees or turnover above the relevant threshold, ESOS Phase 4 applies, with the compliance notification due 5 December 2027, and on-site solar is one of the most credible recommendations an audit can make because it reduces metered grid consumption directly. The right combination of allowances and grants is worth mapping before any commitment, and where the manufacturer's corporate-identity programme also offers support for EV infrastructure, it should be checked against the public schemes to see whether the funding stacks rather than clashes. Because the Workplace Charging Scheme is open only until 31 March 2027, a dealership planning staff and fleet EV charging should treat that deadline as the binding date and start early, since the grant can cover a large share of the chargepoint cost that would otherwise fall entirely on the business, provided the chargepoints fit the scheme's applicant rules.

Compliance and sector considerations

Manufacturer corporate-identity standards may dictate panel placement and EV-charger provision, so the design should meet those standards from the outset rather than retrofitting them later. Workshop areas with COSHH and DSEAR considerations, such as paint and fuel storage, need careful electrical zoning, which belongs in the design from the start. A G99 application to the network operator is needed above 16 A per phase (3.68 kW on a single phase, about 11 kW on three phases), with G98 connect-and-notify up to that, and larger dealerships often have an existing HV connection that simplifies integration and shortens the timeline.

In England, rooftop solar on a building other than a dwellinghouse, such as a showroom or workshop, is permitted development under Class J of Part 14 of the GPDO 2015. Panels may not protrude more than 0.2 m beyond a pitched roof slope or more than 1 m above a flat roof, may not sit within 1 m of the roof edge, and are not permitted development on a listed building or within its curtilage or on a scheduled monument. Systems above 50 kW need the council's prior-approval decision on design and external appearance (including glare), while forecourt canopies and car-park carports above the relevant thresholds require planning permission. Where the site is leased, MEES applies: privately rented non-domestic property in England and Wales must be EPC E or above, the government has consulted on a higher standard but no new minimum or date is confirmed, and solar can help a leased unit's EPC rating. The work should meet BS 7671 and the CDM 2015 duties that apply to construction work, and insurers often refer to the RISCAuthority RC62 guidance on fire safety for PV installations, so ask how a design addresses it. When choosing an installer, ask for its MCS certificate number and check it on the MCS site, ask about NICEIC or NAPIT registration for the electrical work and RECC or TrustMark membership. For the EV works, ask whether the installer is authorised to claim Workplace Charging Scheme vouchers.

How a project like this is usually approached

Sizing normally starts from at least twelve months of half-hourly meter data, with demonstrator and customer EV-charging growth modelled into the load before final sizing, because daytime charging is the most valuable self-consumed generation on the system. The design should meet the manufacturer corporate-identity standard so panel placement and charger provision satisfy the franchise requirement, with the workshop zoned carefully around COSHH and DSEAR areas, and the G99 application is normally submitted early with the structural survey.

Forecourt canopies and car-park carports are worth assessing alongside the roof, and the PV and the chargepoints work best designed as one project so the brand standard is met and the daytime charging demand is self-consumed. Before any price is fixed, the roof build-up should be checked and any asbestos cement sheeting on older workshop or storage buildings identified, because it cannot take panels until it is replaced, so there are no surprises on the day. When comparing proposals, ask how the workmanship is warranted and who stands behind the warranty if the installing company stops trading, and ask about annual operation and maintenance and remote monitoring that flags underperformance automatically. Installation can usually be scheduled around showroom opening and workshop activity so trading is not disrupted, and the only outage is the final grid connection, which can be booked for a quiet period. For a multi-dealership group, applying one repeatable design across the sites makes portfolio pricing, a phased capital plan, a single monitoring dashboard and one point of contact worth asking about, and the dashboard can give both the facilities team and group sustainability reporting a live view of generation, lifetime kWh and CO2 saved.

An illustrative example

As an illustrative composite based on typical UK dealership projects, and not a real named client: an EV-franchise dealership with a large glazed showroom, a busy workshop and a forecourt sized a rooftop array around 250 kW against its showroom, workshop and forecourt-lighting load, roughly 460 panels generating in the region of 230,000 kWh a year. Demonstrator and customer charging absorbed midday generation at full self-consumption value, the staff and fleet chargepoints were part-funded through the Workplace Charging Scheme, and the qualifying cost was written off under the Annual Investment Allowance. The figures are illustrative and depend on your site, franchise standard, surfaces and tariff, which is why a dealership is better modelled from its own meter data and its own manufacturer corporate-identity standard than from a sector average.

For how the same daytime and EV-charging logic plays out elsewhere in the sector, see shopping centre and retail-park solar and solar for golf and country clubs. When you are ready, read the cost guide and the funding routes, send an enquiry, or read the FAQs.