200A Electrical Panel Upgrade
Many homes in Toronto, Mississauga, Markham, and surrounding cities still run on 100A electrical panels — designed for a different era. EV charging, heat pumps, central air conditioning, and modern appliances demand more. A 200A panel upgrade gives your home the electrical capacity it needs, properly sized for today and for the future.
Signs You Need a Panel Upgrade
Watch for these warning signs
- Your panel is rated at 100A or less (check the main breaker — it will be labelled)
- All breaker slots are full — no room for a new EV charging circuit
- Breakers trip frequently when running multiple high-draw appliances
- You are planning to add an EV charger, heat pump, hot tub, or major electrical load
- Your home was built before the mid-1990s and still has the original panel
- Your panel has a fuse box (not circuit breakers) — this requires immediate upgrading
- Your insurer has flagged your electrical panel as a concern
What's Included in a 200A Panel Upgrade
Full load calculation to confirm service upgrade is required
Utility coordination (Toronto Hydro, Alectra, Oakville Hydro) for meter pull/reconnect
Supply and installation of new 200A panel with modern Square D or Siemens breakers
Transfer of all existing circuits to the new panel
Proper circuit labelling and panel directory
Grounding and bonding to current code
New EV charging circuit (40A or 50A) included on request
Electrical permit filing and ESA inspection
Clean, professional workmanship — no visible mess after completion
Why 100A Is No Longer Enough
A 100A electrical panel was perfectly adequate for a home in 1975. The average household electrical load back then was a fraction of what it is today. Today's homes run central air conditioning (10–20A), electric dryers (30A), dishwashers (10–15A), electric ovens (50A), and dozens of other devices — all before adding an EV charger.
A Level 2 EV charger typically needs a dedicated 40A or 50A circuit. On a 100A panel that's already running at 70–80A of actual load during peak hours, adding a 50A EV charger without a proper load calculation is a genuine electrical safety concern.
We don't automatically recommend a panel upgrade for every job. We perform a load calculation first. But when the numbers don't work — or when your panel is simply full with no available breaker slots — a 200A panel upgrade is the right answer.
Safety First
Modern 200A panels with current-generation breakers are significantly safer than aging 100A panels. The new panel meets today's Ontario Electrical Safety Code standards.
Fully Permitted
Every panel upgrade we complete is permitted through the ESA and inspected before the job is closed. You receive a certificate of inspection for your records.
Future-Proof
A 200A panel gives you room to add an EV charger, heat pump, hot tub, or any other electrical load you'll want in the next 10–20 years.
The Upgrade Process
- 1Load calculation: We measure your existing electrical load against your panel's rated capacity.
- 2Utility check: We determine if a service upgrade is needed and initiate utility coordination if required.
- 3Permit: We file the electrical permit with the ESA before starting any work.
- 4Panel installation: We install the new 200A panel, transfer all circuits, and complete all grounding and bonding.
- 5EV circuit (optional): If you're also adding an EV charger, we install that circuit as part of the same job.
- 6Inspection: ESA inspection is scheduled and completed. You receive a certificate of inspection.
Frequently Asked Questions
How do I know if I need a 200A panel upgrade?
Look at your main breaker — the large double breaker at the top of your panel. If it says 100 (or less), you have a 100A service. If all breaker slots are used, or if a load calculation shows your EV charger would overload the panel, you need an upgrade. We assess this at no charge before recommending any work.
How long does a 200A panel upgrade take?
Typically 4–8 hours for the electrical work itself. If a utility meter pull is required (for a service upgrade), this adds 1–3 hours depending on utility scheduling. We try to complete the full project in a single day to minimize your downtime.
Do I need a panel upgrade to add an EV charger?
Not always. We perform a load calculation first. Many 100A homes can support an EV charger with load management technology (EVEMS), which monitors household electricity use in real time and limits charger output when other loads are high. However, if your panel is genuinely overloaded or full, a 200A upgrade is the clean, long-term solution.
What is the difference between a panel upgrade and a service upgrade?
A panel upgrade replaces the breaker panel inside your home. A service upgrade changes the incoming service (the wire from the utility transformer to your home) and typically requires utility coordination. If you are going from 100A to 200A service, both a panel upgrade and a service upgrade are usually required. We handle both.
Does a panel upgrade affect my home insurance?
Positively, in most cases. Many insurers view 100A panels and older fuse boxes as a risk. Upgrading to a modern 200A panel can reduce insurance concerns and may lower premiums. Notify your insurer after the upgrade — they will typically want the ESA certificate of inspection.
Which utility companies do you coordinate with for panel upgrades?
We coordinate with Toronto Hydro (all of Toronto), Alectra Utilities (Markham, Richmond Hill, Vaughan, Aurora, Newmarket, Brampton, Mississauga, and other areas), and Oakville Hydro (Oakville). Each utility has a specific process for meter pulls and service upgrades — we know all of them.
Cities We Serve for Panel Upgrades
Need a panel upgrade before your EV charger?
We do both in one visit. Call or text for a free assessment — we'll give you the honest picture.