Key Takeaways
- Most homes built before the 1990s still run on 100-amp service, which struggles to keep up with EV chargers, heat pumps, and modern appliance loads.
- A 100-amp to 200-amp upgrade is now the most common electrical project in Ontario, typically costing between $2,500 and $5,000 including the ESA permit.
- Panel upgrades are unavoidable if you’re adding a Level 2 EV charger, finishing a basement suite, or bringing your home up to the 2026 Ontario Electrical Code.
- All panel work must be completed by a licensed electrician and inspected by the Electrical Safety Authority (ESA) — DIY panel work is illegal and voids home insurance.
- Upgrading now, even before you need the extra capacity, is usually cheaper than upgrading twice.
Why Panel Upgrades Are Trending Across Ontario in 2026
Electrical panels rarely get attention until something forces the issue — and in 2026, a lot is forcing the issue. Electric vehicle ownership keeps climbing across the GTA, and a single Level 2 charger can pull 40 amps or more on its own. Add central air conditioning, a heat pump, a hot tub, or a finished basement, and a 100-amp panel that was perfectly fine in the 1980s is suddenly maxed out.
Homebuyers have noticed too. Panel size is now a standard checkpoint in GTA home inspections, and outdated 100-amp or fuse-box services are increasingly used as negotiating leverage during a sale.
Signs Your Home Needs an Upgrade
Not every home needs 200-amp service today, but certain signs point clearly toward an upgrade:
- Breakers trip regularly when you run multiple appliances at once
- You’re planning to install an EV charger, hot tub, or heat pump
- Your panel still uses fuses instead of breakers
- You’re finishing a basement or adding a secondary suite that needs its own sub-panel
- A home inspection or insurance provider has flagged your electrical service
If two or more of these apply, it’s worth booking a load calculation with a licensed electrician before starting any other renovation work.
100-Amp vs. 200-Amp: What’s the Real Difference
A 100-amp panel can still run basic household circuits — lighting, a fridge, a washer/dryer — without issue. Where it falls short is capacity for anything power-hungry layered on top of that baseline.
A 200-amp panel is now the default recommendation for most Ontario homes because:
- It comfortably supports EV chargers, heat pumps, and electric ranges without load-management workarounds
- It future-proofs the home against rising electrical demand, including smart-home devices
- The incremental cost over a same-size 100-amp replacement is often only $500 to $1,000
- It removes a common red flag during resale and financing
What a Panel Upgrade Costs in Ontario (2026)
Pricing varies by city, panel location, and the condition of your existing service, but current 2026 ranges across the GTA generally fall into these tiers:
- Same-size panel replacement: $1,800 – $3,000
- 100-amp to 200-amp upgrade: $2,500 – $5,000
- Sub-panel addition (basement suite, garage, workshop): $900 – $1,800
- Meter base replacement, if required: an additional $300 – $700
These figures typically include labour, the new panel, and the ESA permit. Homes with older service entrance cables, underground service, or panels in hard-to-reach locations tend to land at the higher end.
The ESA Process: What Homeowners Should Expect
Every electrical panel upgrade in Ontario must go through the Electrical Safety Authority. Here’s the general sequence:
- A licensed electrician performs a load calculation and inspects your current service
- A permit is filed with the ESA before work begins
- The panel swap is completed — most jobs take a single day, with power off for several hours
- Your local utility may need to upgrade the service drop, which can add a few weeks of scheduling lead time
- The ESA inspects the finished work before it’s signed off
Skipping this process isn’t just risky — it’s illegal, and it can void your home insurance if a fire or electrical issue is later traced back to unpermitted work.
Timing It Around a Larger Renovation
If a panel upgrade is on the horizon, it’s almost always more efficient to schedule it alongside a broader project rather than as a standalone job later. This is especially true for homeowners legalizing a basement apartment, where a dedicated sub-panel is often required for the new unit, or anyone tackling a whole-home renovation where walls are already open. Coordinating the electrical scope with your contractor from the outset avoids redundant permits and repeat inspection visits.
Homeowners weighing a full renovation should also look at how today’s top renovation companies structure their electrical scope of work, since panel capacity affects nearly every other trade on the job — from kitchen appliances to basement finishing.
Final Thought
A panel upgrade isn’t the most exciting renovation line item, but it’s often the one that determines whether every other upgrade — EV charging, a finished basement, a modern kitchen — actually works the way it’s supposed to. Getting ahead of it with a licensed electrician and proper ESA permitting is the difference between a smooth renovation and a costly rework down the line.
