Guide · Panels
What does a panel upgrade cost in Ontario?
The honest answer is “it depends” — but it depends on things you can actually understand. Here’s what moves the number, when you genuinely need an upgrade, and how to get a real quote instead of a guess. Written by the crew at NCP Electrical, an ECRA/ESA-licensed contractor (#7015906) in Greater Sudbury.
The two different jobs people call “a panel upgrade”
1. Replacing the panel itself. Your service (the power coming into the house) stays the same; the box and breakers get replaced — often a fuse box giving way to a modern breaker panel, or a tired panel swapped for one with room to grow. This is the smaller job.
2. Upgrading the service. The whole feed gets bigger — commonly 100 amps to 200 amps — which can pull in mast and meter-base work, new service conductors, grounding updates, and utility coordination alongside the new panel. This is the bigger job, and it’s what an EV charger, electric heat, a workshop or a major addition often calls for.
Across Ontario, homeowners commonly report panel swaps landing in the low thousands, and full service upgrades running several thousand more. Treat those as orientation, not a quote — the spread between an easy job and a complicated one is real money.
What actually moves the price
- Service size — staying at the existing amperage vs stepping up to 200 A.
- The state of what’s there — grounding, bonding and wiring that have to be brought up to today’s code while the panel’s open.
- Mast & meter work — if the overhead mast or meter base needs replacing, that’s labour and materials the panel-only job doesn’t have.
- Access & circuit count — a clean basement panel with 20 circuits transfers faster than a buried one with 40.
- ESA notification & inspection — filed by your contractor; the fee scales with the job.
- Surprises — older Sudbury housing stock keeps things interesting. A contractor who looks first quotes tighter.
Signs you actually need this (and signs you don’t)
Adding an EV charger or a big new load, planning a renovation, living with a fuse box, running out of breaker slots, or fielding insurance questions about old electrical — those are real reasons. A panel that’s merely old but safe, with capacity to spare? You might not need anything. We’ll say so — talking someone out of an unnecessary upgrade is cheaper for you and better for us long-term.
How to get a real number
Photos of your panel (door open), your main breaker rating, and a sentence about what’s prompting the question — that’s enough for a meaningful conversation, and usually a same business-day response. You get a clear written quote before any work starts: fair pricing, no surprises on the invoice.
Quick answers
Panel cost FAQ
01 What does a panel upgrade typically cost in Ontario?
It depends on the scope. Replacing a panel on an adequate existing service is the smaller job; upgrading the service itself (for example to 200 amps, with mast, meter base and grounding work) is the bigger one. Across Ontario, homeowners commonly report totals from the low thousands for a panel swap to several thousand more for a full service upgrade. The honest answer for your home comes from a quote — the ranges only tell you which ballpark you’re in.
02 What drives the price up or down?
The big factors: whether the service size changes (100 A vs 200 A), the condition of the existing wiring and grounding, mast and meter work, how accessible the panel is, the number of circuits to transfer, and whether anything turns up that has to be corrected to meet today’s code. ESA notification and inspection are part of the job too.
03 Do I need a permit for a panel upgrade?
Yes — in Ontario, panel and service work requires a notification of work filed with the ESA (Electrical Safety Authority), followed by inspection. A Licensed Electrical Contractor files this for you; it’s part of doing the job properly and it’s how the work gets documented as safe and to code.
04 When is a panel upgrade actually necessary?
Common triggers: an EV charger or other large new load, a renovation or addition, a panel with no free slots, frequent breaker trips, an older fuse box, or an insurance company asking questions about the electrical. If none of those apply, you may not need one — a good contractor will tell you that straight.
05 How long does a panel upgrade take?
Most residential panel swaps are measured in hours, not days — typically with a planned power shutdown while the work happens. A full service upgrade takes longer and involves utility coordination. Your quote should spell out the timing for your specific job.