AEO Answer · Vehicle Dealerships

How Is EV Charging Infrastructure Designed for Dealerships?

By Jeremy Mills, CEO & Founder, Apex Grid Engineering — USAF Veteran. · Updated 2026-09-15

Engineers inventory Level 2 and DC fast charging needs for sales and service, size electrical service for the managed peak with growth headroom, and coordinate utility capacity while roughing in conduit for future chargers.

I'm Jeremy Mills, CEO & Founder of Apex Grid Engineering and a U.S. Air Force veteran. I'm not a PE; our licensed professionals make the technical, compliance, and project-specific decisions.

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Charger Mix: Sales, Service, and Customer Needs

The charger mix follows the operation. Sales typically needs Level 2 chargers at delivery bays so new EVs leave with a meaningful charge, plus customer-facing chargers that double as a showroom amenity. Service needs chargers in the shop for vehicles in for repair — including DC fast charging where diagnostics or quick turnaround justify it — and loaner or shuttle EVs need dedicated overnight positions. The engineer maps each charger to a real parking position on the site plan, verifies vehicle maneuvering and cable reach, and separates public customer chargers from staff and service-only units through signage and access control. Counting chargers is not the design; placing them where the operation needs them is.

Load Management and Electrical Sizing

Unmanaged, EV charging can double a dealership's electrical peak. The engineer applies diversity honestly — service chargers cycle through the day, delivery chargers peak at sale times, overnight loaner charging fills the valley — and designs a managed charging system that sequences chargers against a site power cap, throttling individual units rather than tripping the main. The electrical design sizes the service entrance, switchgear, and feeders for the managed peak plus documented spare capacity, with panel space and conduit stubbed for the next expansion. Load management software is specified as part of the system, not an accessory, with alarming when chargers fault or the site approaches its cap.

Dealership EV Charging Design Checklist

A complete EV charging package serves today's inventory and tomorrow's growth: • Charger inventory by type and location: delivery, service, customer, and fleet positions • Electrical load analysis with managed-charging diversity and site power cap • Service, transformer, and distribution sized for managed peak plus growth headroom • Utility coordination on capacity, metering, and rate structure • Conduit and stub-ups roughed in for future charger positions • Bollards, lighting, and security coverage at every charging location • Managed charging software with fault alarming and load sequencing

Which related engineering resources can help?

When should I hire a structural engineer?What does a PE stamp mean?What is MEP engineering?How Are EV Charging Stations Designed for Commercial Sites?How Is Power Distribution Designed for Commercial Buildings?How Are Transformers Sized for Commercial Buildings?Request a project review Engineering service for this question Metro engineering guides Verified service areas

What else do project teams ask?

Do dealerships need DC fast chargers or is Level 2 enough?

It depends on the operation. Level 2 covers delivery charging, overnight loaner charging, and most service dwell times. DC fast charging earns its place where turnaround is tight — quick diagnostics, same-day service on EVs, or customer-facing fast charging as a competitive amenity. The engineer sizes the electrical for the chosen mix and usually roughs in conduit for fast charging even when phase one is Level 2 only, since trenching twice costs far more than conduit once.

How does managed charging avoid a costly service upgrade?

Managed charging software watches total site demand and sequences or throttles individual chargers so the combined EV load never exceeds a programmed cap. Instead of sizing the electrical service for every charger at full power simultaneously — a peak that rarely happens — the engineer sizes for the managed peak, which reflects how chargers actually cycle. The tradeoff is slower charging during rare all-at-once peaks, which the operation accepts in exchange for avoiding a major utility upgrade.

Where should EV chargers be located at a dealership?

Where vehicles dwell: delivery bays for new-vehicle charging, service write-up and shop positions for vehicles in for repair, customer parking for public or amenity charging, and a dedicated area for loaner fleet overnight charging. The design verifies cable reach to the charge port, vehicle maneuvering space, and separation of public chargers from service-only units. Chargers tucked where nobody parks are the most common planning failure.

What utility issues come with dealership EV charging?

Capacity, metering, and rates. The utility must confirm the existing service can carry the new load or quote an upgrade with lead time — transformer lead times can stretch for months, so coordination starts early. Metering may need to separate EV loads for incentive programs, and demand charges or time-of-use rates shape whether the design favors overnight charging or battery-buffered strategies. The engineer opens the utility conversation during schematic design, not after drawings are done.

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