Adding EV charging to a commercial property, workplace, or multi-unit building involves more than mounting a charger, it involves load capacity, utility coordination, and accessibility compliance. Mercanti Electric handles all of it.
Demand for commercial EV charging Hamilton properties are seeing is growing faster than most building electrical systems were designed to handle. Tenants ask about it, employees expect it, and property managers are increasingly finding it’s not a question of if but when. The challenge isn’t usually the charger itself, most are straightforward, well-documented equipment. The challenge is everything around it: whether your building’s electrical service can actually support the added load, how that load gets managed across multiple charging stations without triggering an expensive utility upgrade, and whether your installation meets the accessibility requirements that apply to commercial and public parking.
Mercanti Electric is the commercial EV charging Hamilton properties turn to, from single workplace chargers to multi-unit and fleet installations, backed by Joseph Mercanti’s 13 years of experience and full ESA/ECRA licensing (#7017086). We assess your building’s actual capacity before recommending equipment, so you get a system that works today and has a realistic path to scale later.
Every commercial property’s electrical capacity is different, and the right approach for a small office with two charging spots looks nothing like the approach for a fifty-unit condo or a commercial fleet lot. We assess the actual building infrastructure before recommending a charging strategy, rather than proposing the same setup everywhere.
This is the part of commercial EV charging that catches property owners off guard. A single Level 2 charger is a modest load, but a bank of ten or twenty chargers serving a commercial lot, a workplace, or a multi-unit residential building draws enough power that most existing electrical services simply weren’t built to support it, especially if all of those chargers could theoretically run at full draw simultaneously. Sizing for that worst-case scenario often means an expensive service upgrade that isn’t actually necessary if the load is managed properly.
This is exactly what Ontario’s 2025 Electrical Safety Code changes address. The 29th edition formally recognizes energy management systems, sometimes called load management or automatic load management systems, that can actively control EV charging demand across multiple stations, distributing available capacity dynamically rather than requiring every charger to be sized for simultaneous full-power use. In practice, this can eliminate or significantly reduce the need for a costly service upgrade, since the system limits total draw to what the building can actually supply, spreading it across whichever vehicles are charging at a given time.
Connecting multiple charging stations also isn’t purely an internal electrical decision. The Ontario Energy Board’s Electric Vehicle Charging Connection Procedures set out standardized requirements that your local electricity distributor, Alectra in the Hamilton area, must follow when handling connection requests for workplace, multi-unit, and commercial EV charging installations. We coordinate directly with your utility as part of the installation process, so capacity and connection requirements are confirmed before equipment goes in, not discovered afterward.
The Ontario Electrical Safety Code’s 29th edition, in effect since May 1, 2025, added a dedicated section addressing EV charging infrastructure directly, reflecting how much more common commercial and multi-unit charging installations have become. Revised demand load calculation rules make it possible to size a building’s service more accurately for EV charging loads rather than defaulting to oversized, conservative estimates that assumed every charger would draw maximum power at once. For larger or more complex commercial EVSE installations, the code also requires enhanced plan review submissions to ESA before work proceeds, reflecting the added complexity these systems bring to a building’s overall electrical design.
It’s also worth knowing that Ontario has a provincial bill under consideration, the EV-Ready Homes Act, which would amend the Building Code Act to require EV-ready infrastructure in new residential construction. It hasn’t been enacted into law as of this writing, but several municipalities, including parts of the GTA, already have their own requirements for EV-ready parking in new multi-unit buildings. If you’re planning new construction or a major renovation, it’s worth designing for EV readiness now rather than retrofitting later, since retrofits into finished parking structures are considerably more disruptive and expensive than building it in from the start.
If your charging stations serve the public, tenants, or employees, accessibility isn’t optional, and it’s a compliance area that’s easy to miss because it isn’t unique to EV charging, it falls under Ontario’s broader accessibility framework. Under the Accessibility for Ontarians with Disabilities Act, municipalities and organizations across the GTA have started applying specific accessible design standards to EV charging installations, generally requiring that a portion of charging stations be located on an accessible path, sized with adequate clear space and access aisles around the charger, and positioned so the charging equipment’s controls fall within reach range for someone using a mobility device.
Some municipal guidelines also call for a “use last” approach, where accessible charging spaces are reserved for people with disabilities but can be used by others only once all standard charging spaces are occupied, along with specific signage requirements. These aren’t universal requirements everywhere in Ontario yet, but they’re becoming standard practice for public and workplace charging, and getting layout and accessibility right at installation avoids a retrofit later. We factor accessibility into the site layout from the planning stage, not as an afterthought once chargers are already in the ground.
We evaluate your building’s existing electrical service, available capacity, and the number and type of charging stations you need.
We calculate whether your current service can support the load directly or whether load management or a service upgrade makes more sense.
Where the installation requires it, we coordinate with your local utility under the applicable connection procedures before work begins.
We plan charging station placement, including accessibility requirements, parking layout, and future scalability.
We pull the required ESA electrical permit, including enhanced plan review submissions for larger or more complex installations.
We install chargers, wiring, load management systems, and any panel or service upgrades required.
We test the system under load and coordinate ESA inspection, providing documentation for your records.
A poor commercial EV charging installation is often the kind of problem that doesn’t show up until every parking space is occupied and every charger is in use at once. Watch for an installer who sizes chargers without doing an actual load calculation, skips coordination with your utility entirely, or installs equipment without any load management strategy on a multi-charger site, all of which can lead to tripped services, capacity limits discovered too late, or an unplanned and costly service upgrade after the fact. Accessibility should be addressed at the design stage, not bolted on afterward, and a proper job includes a pulled ESA permit, documented plan review where required, and inspection records you can keep on file for your property.
Mercanti Electric provides commercial EV charging installation services throughout:
Get the commercial EV charging Hamilton properties trust, planned around your building’s actual capacity, not guesswork.
Not necessarily. With proper load management or an energy management system, multiple charging stations can often share existing capacity without requiring a full service upgrade, since Ontario’s current electrical code formally recognizes load management as a way to size EV charging demand more accurately.
Yes, for workplace, multi-unit, or commercial charging installations, your electricity distributor follows standardized connection procedures set by the Ontario Energy Board. We handle this coordination as part of the installation.
It depends on who your charging stations serve and your municipality’s specific requirements, but accessibility under Ontario’s disability accessibility framework increasingly applies to public and workplace charging. It’s worth planning for even where it’s not yet a hard requirement.
Yes, and planning for this upfront, particularly around panel capacity and conduit runs, makes future additions significantly easier and less disruptive than retrofitting later.
The core electrical and permitting requirements are similar, but MURBs often involve additional considerations like shared ownership of parking, condo board approval, and planning for eventual full-building EV readiness rather than a handful of chargers.
It depends heavily on scope. A single workplace charger can be a short job, while a multi-unit or fleet installation involving service upgrades and utility coordination takes considerably longer. We provide a specific timeline after the site assessment.
In some cases, yes, but DC fast charging draws significantly more power than Level 2 charging and requires a much more substantial electrical capacity assessment. We evaluate whether it’s realistic for your property’s service during the initial assessment.
