Commercial solar for automotive dealerships.

Car dealerships sit in an unusual position for commercial solar. The trading day runs on daytime electricity, showroom lighting, climate control across a glazed sales floor, the aftersales workshop and an air line, while the move to electric vehicles is steadily adding handover and demonstrator charging on top. That demand lands squarely in the hours a rooftop array generates.

It is worth modelling properly because a dealership often has more usable area than its showroom roof alone. The forecourt and customer car park can carry solar canopies, which both add array capacity and shelter stock and EV chargers underneath. The right size for any one site is not a roof estimate, it comes from the survey and the half-hourly load model.

Solar earns most when the generation is consumed on site. A unit you use offsets an expensive import unit, while a unit exported to the grid is paid far less under the Smart Export Guarantee, so the return tracks how well the array output lines up with the building's demand through the day. For a dealership that match tends to be good. Showroom lighting and HVAC run continuously through opening hours, and those hours overlap the bulk of daily generation, so a useful share is self-consumed rather than exported.

Electrification strengthens the case. As forecourts add EV-handover charging, pre-delivery top-ups and demonstrator charging, much of that draw falls in daytime, lifting on-site demand exactly when the panels are producing. Where the daytime match is weaker, for example evening or weekend charging, battery storage can shift midday generation into those windows. None of this is a fixed rule. A dealership with a quiet workshop and little charging will export more than one running a busy EV-handover operation, which is why we model the real profile before sizing anything.

The typical dealership array combines two surfaces. The main showroom and workshop roofs are usually large, modern and lightly shaded, which suits a roof-mounted system, and the forecourt or customer car park can take solar canopies that add capacity while sheltering stock and chargers. For orientation only, dealership sites tend to fall in an indicative band of roughly 50 to 250 kWp, which sits in the 50 to 150 kWp band for a showroom roof and higher once carport canopies are added. Treat that as a sense of scale rather than a quote. The real figure comes from the on-site survey and the PV*SOL model for your specific roof and structure.

The value of a dealership array is set by the daytime match, so we model it before we size anything. A showroom roof in this region tends to be lightly shaded and reasonably pitched, which we treat as a modelling starting point of broadly 850 to 950 kWh per installed kWp a year, confirmed in PV*SOL against your exact roof rather than promised. What matters more than the yield figure is where that generation lands in the day. Showroom lighting, the glazed sales-floor HVAC, the aftersales workshop, the air line, the parts store and reception all draw through opening hours, and that base sits squarely under the generation curve, so a useful share is self-consumed rather than exported under the Smart Export Guarantee.

EV-handover charging is the variable that moves the model most, and it cuts both ways. Pre-delivery inspection top-ups, demonstrator charging and customer handover sessions add daytime demand that lifts self-consumption when they fall in trading hours, but a bank of rapid EV chargers can also pull a short, sharp load that no rooftop array covers on its own. We read your half-hourly data to see how your forecourt actually charges, because a brand that hands over twenty electric cars a week behaves nothing like one still mostly selling combustion stock. Where the charging peaks sit outside generation hours, or cluster into evening and weekend windows, we model whether battery storage shifts midday output into those peaks and whether it trims the import demand charge a rapid charger can trigger. None of this is assumed from a sector average; it is sized to the profile your site carries.

A dealership solar project carries duties that a plain warehouse roof does not. Manufacturer corporate-identity programmes increasingly set sustainability and energy expectations for franchised sites, and a visible rooftop or canopy array is one of the clearer ways to evidence that on an estate audit, so we design the layout to read well from the forecourt as well as perform on the meter. The showroom itself is a commercial building that must meet a minimum EPC rating to be let or, in many cases, continued in use under the MEES regulations, and on-site generation is one of the measures that improves that rating. Every install over 50 kWp sits outside the domestic MCS scheme, so the assurance is the non-MCS engineering stack instead: design to BS 7671, IEC 62446-1 commissioning and a G99 connection with your network operator, all under CDM 2015 with a Principal Designer and Principal Contractor appointed, which matters where the work runs over a trading showroom and a live forecourt that has to keep selling.

The finance route often matters as much to a dealer group as the array itself, because capital is usually committed across a property portfolio rather than one site. An outright purchase lets the business claim the available capital allowances against the plant, which is the route most groups model first and the one we recommend wherever the capital is available. A lease spreads the cost while you keep the asset, and a power purchase agreement funds the system through a unit rate with no upfront capital, which can suit a tenanted dealership or a group protecting headroom for stock and showroom investment. We set the modelled self-consumption against each route so the decision can rest on the group's cash position rather than on a headline number; for how those options compare, see the capex case and the payback and ROI guide, where any return is modelled from your figures and never promised as a flat percentage.