Can I install an EV charger in my detached garage?

Yes, you can absolutely install a Level 2 EV charger in a detached garage — but it requires a licensed electrician, an ESA permit, and some planning around how power gets from your home to the garage.

The main consideration with a detached garage is the electrical feed. If your garage already has a subpanel or a dedicated circuit with sufficient capacity, the installation is fairly straightforward. If it only has basic lighting and outlets — or no power at all — your electrician will need to run a new feed from your main panel to the garage. This is typically done with underground conduit (buried at the required depth per the Ontario Electrical Safety Code) or overhead service, depending on your property layout and local requirements.

What the circuit needs: A standard Level 2 charger (the kind that charges overnight) typically operates at 32 amps and requires a dedicated 40-amp, 240-volt circuit — similar to what a dryer or electric range uses. The wire gauge, breaker size, and conduit type all need to meet OESC requirements, which is why this isn't a DIY project. Your electrician will also assess whether your main panel has the capacity to support the new circuit, or whether a panel upgrade is needed first.

What to expect cost-wise in Ottawa: If your detached garage already has adequate power and panel capacity, EV charger installation typically runs $1,200 – $1,800 for the circuit and charger installation. If a new underground feed needs to be run to the garage, budget $2,000 – $4,000+ depending on the distance and trenching required. If your main panel also needs an upgrade, total costs can reach $3,000 – $5,500.

The permit side of things: EV charger installation in Ontario requires an ESA permit — no exceptions. Your licensed electrician pulls the permit before work begins, completes the installation to code, and an ESA inspector signs off within a few business days. This protects you, your insurance, and ensures the charger operates safely. Unpermitted EV charger installations are a real liability if you ever make a home insurance claim or sell your home.

Most major charger brands — Tesla Wall Connector, ChargePoint, Grizzl-E — all work well in garage settings and handle Ottawa winters without issue. Your electrician can advise on charger placement and whether any weatherproofing considerations apply for your specific garage setup.

For a free estimate on your EV charger installation, reach out to Electrical Ottawa — we'll assess your panel capacity, garage setup, and give you a clear picture of what's involved before any work begins.