September 30, 2026
Your Panel Is the Heart of Your Home’s Electrical System
Every light, outlet and appliance in your home draws its power through one place: your electrical panel. When it was installed, it was sized for the way people lived at the time. Today, many homes in Mississauga and the GTA are asking far more of it, with EV chargers, heat pumps, induction ranges, home offices and standby generators all competing for the same supply.
An outdated or overloaded panel doesn’t just limit what you can add to your home. It can overheat, fail to trip when it should, and create a real fire risk. In this blog we are going to look at the signs that your panel needs an upgrade, what an upgrade typically costs in Ontario, and what’s actually involved in getting it done.
Signs You Need an Electrical Panel Upgrade

Most panels give off warning signs well before they fail. Key signs include:
- Frequently tripping breakers: If breakers trip when you run the microwave and the kettle together, your panel may not have the capacity your home needs.
- Flickering or dimming lights: Lights that dim when large appliances start up can point to an overloaded service.
- A warm panel or burning smell: A panel cover that feels warm, or any burning smell near it, needs attention right away.
- Fuses instead of breakers: Fuse panels are no longer standard, and many insurers will raise premiums or refuse coverage because of them.
- 60- or 100-amp service: Older service levels often can’t support an EV charger, heat pump or major renovation.
- No room for new circuits: If your panel is full and relies on double-tapped breakers or tandem breakers to add circuits, it has outgrown your home.
- Rust, corrosion or scorch marks: Moisture and heat damage inside a panel are serious fire risks.
How much does an electrical panel upgrade cost in Ontario?
A 200-amp panel upgrade in Ontario typically costs between $1,800 and $5,000, and can run higher for complex jobs. The final price depends on a few factors:
- Service size: Replacing a panel at the same amperage costs less than a full service upgrade from 100 to 200 amps.
- Utility work: A service upgrade may need a new meter base, a new service cable, and coordination with your local utility.
- Condition of existing wiring: Aluminum or knob and tube wiring connected to the panel may need repairs at the same time.
- Location and access: A panel in a finished basement or tight space takes more time to replace.
Every home is different, so we always quote after seeing your system in person.
Can I upgrade my electrical panel from 100 to 200 amps?
Yes, most homes can be upgraded from 100 to 200 amps. It involves replacing the panel and, in most cases, upgrading the service coming in from the utility, including the meter base and service cable. A licensed electrician will complete the proper procedures first to confirm the upgrade fits your home’s needs.
Can I upgrade an electrical panel myself?
No. In Ontario, panel replacements and service upgrades must be done by a Licensed Electrical Contractor, who files a notification with the Electrical Safety Authority (ESA) so the work can be inspected. The work also requires disconnecting power at the utility, which a homeowner can’t arrange. DIY panel work is dangerous and can affect your insurance, future home sale, and your own personal safety.
Can I upgrade my panel without rewiring my whole house?

In most cases, yes. A panel upgrade replaces the panel and the service, and your existing circuits are reconnected to the new breakers. Rewiring is only needed if we find unsafe wiring, such as knob and tube, damaged circuits, or improper aluminum connections, during the job.
One Upgrade, Many Projects
A panel upgrade is often the first step toward a bigger project. If you’re planning any of the following, it’s worth checking your panel first:
- EV charger: Most Level 2 chargers need a dedicated 40- to 60-amp circuit. Read All About EV Charging Stations.
- Standby generator: A Generac standby generator needs a transfer switch tied into your panel. Read Looking Back at the Power Outage of 2003.
- Battery storage: Home battery systems connect through your panel too. Read Battery Storage – Save In More Ways Than One.
- Knob and tube replacement: Rewiring an older home is a good time to modernize the panel. Read Knob & Tube Wiring – Hazards, Signs, and Fixes.
Book a HomeSAFE Electrical Risk Assessment
Not sure if your panel is up to the job? A HomeSAFE Electrical Risk Assessment will tell you exactly what shape your panel and wiring are in, and what, if anything, needs to change. Our family at Birnie HomeSAFE stands behind our work, and strives for customer satisfaction.
Learn more about a HomeSAFE Electrical Risk Assessment or call us at 905-569-1818.
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