Do You Need a Panel Upgrade Before Installing an EV Charger?
This is the question we get asked most often — and it's a fair one. The honest answer: not always, but often in the GTA. Here's exactly how to think about it.
How a Panel Upgrade Decision Actually Works
A Level 2 EV charger needs a dedicated 240V circuit, typically drawing 30–60 amps continuously. Whether your existing panel can support that depends on two things:
- What size service do you have? (100A vs 200A vs 400A)
- How much of that capacity is already in use?
A licensed electrician does a "load calculation" — adding up everything in your home that draws power — to determine whether there's room for an EV circuit without overloading the panel.
Signs Your Panel May Need an Upgrade
You don't need to wait for an electrician to spot some of these:
Your home was built before 1990
Most homes built before 1990 have 100-amp service. That was fine when houses had fewer high-draw appliances. Today, with EV chargers, heat pumps, induction ranges, and electric dryers, 100A is often not enough.
Your breakers trip frequently
If you've noticed breakers tripping — especially when running multiple appliances at once — your panel is likely near its capacity. Adding a 30–60A EV circuit on top of that will make it worse.
You have a fuse box instead of a breaker panel
Fuse boxes are a red flag regardless of EV charging. Most electricians and insurance companies recommend replacing them. If you have one, a panel upgrade isn't optional — it's overdue.
You're adding other high-draw items at the same time
Planning a heat pump, electric water heater, or major kitchen renovation at the same time as your EV charger? Each of those adds to your load. The panel upgrade calculation changes significantly when multiple loads are added together.
Signs You May NOT Need an Upgrade
Good news: many GTA homes — especially newer builds — are panel-ready:
- Your home has 200A service with room to spare
- You have fewer large appliances than average
- You're in a newer home (built after 2000)
- An electrician's load calculation shows available capacity
A quick site assessment will answer this definitively.
What Does a Panel Upgrade Cost?
In the GTA in 2026:
- 100A → 200A upgrade: $1,500–$2,500 (includes permit, inspection, labour, materials)
- 200A → 400A upgrade: $2,500–$4,000
- Sub-panel addition: $800–$1,800 (if main service is adequate but you need more circuits in a garage or workshop)
Can I Do Both at Once?
Yes — and it's usually more cost-effective. When we do both the panel upgrade and the EV charger installation in the same visit:
- One trip for labour
- One combined ESA permit
- One inspection (covering both)
- Less disruption to your day
Most homeowners save $300–$600 by bundling the work.
What If I Don't Need an Upgrade?
If your panel has capacity, we install the dedicated 240V circuit and charger directly. No upgrade needed, no extra cost. The load calculation takes about 20 minutes during our free assessment.
The Bottom Line
Don't assume you need an upgrade — and don't assume you don't. A free site assessment from a licensed GTA electrician will tell you exactly where you stand in under an hour.
Book your free EV charger assessment →
We assess the panel, give you a clear quote for the charger (and upgrade if needed), and explain everything in plain language. No pressure, no upselling.
Also see: How much does EV charger installation cost in Ontario?