How Long Does an Electrical Panel Upgrade Take?
Once you decide to upgrade your electrical panel, the next question is almost always about time. How long will the work take, and how long will the power be off? The short answer is that most residential upgrades are a one day job. The fuller answer includes scheduling, the utility, and the inspection, so here is the whole timeline laid out.
The short version
For a typical home, the hands on work of replacing the panel takes most of a day. Your power is off for several hours during that window. The wider project, from booking to final inspection, usually spans a week or two because it involves your utility and the ESA. If you are still weighing whether you need the upgrade at all, start with the signs you need an electrical panel upgrade.
Step by step timeline
Assessment and quote
First, a licensed electrician inspects your current service, runs a load calculation, and gives you a written quote. This can often happen on a single visit.
Permit and scheduling
Your contractor pulls the ESA permit and coordinates the disconnect and reconnect with your local utility. This scheduling step is usually what stretches the calendar, often by a week or two depending on utility availability.
Installation day
On the day of the work, the utility disconnects power, the old panel and service equipment come out, and the new panel goes in. Every circuit is reconnected and labelled, then the system is tested. Your power is off for several hours during this part.
Inspection and power on
The ESA inspects the completed work. Once it passes, the utility reconnects power and you receive your certificate. Many upgrades clear inspection the same day or the next business day.
What can make it take longer
Some homes need more than a standard day. Plan for extra time when:
- The meter base, service mast, or service cable also need replacing.
- The home has older wiring that has to be addressed first, such as knob and tube.
- The panel is being relocated to a new spot.
- The utility needs a transformer or service line change.
Your electrician will tell you up front if any of these apply, so the timeline is clear before work starts. For the cost side of these scenarios, see our cost to upgrade to 200 amp service page.
How to prepare for the day
Since the power is off for several hours, plan ahead. Charge devices, plan around the fridge and freezer, and clear access to the panel. If anyone in the home relies on powered medical equipment, tell your electrician in advance so the outage can be planned safely. You can learn more about how we run these jobs on our panel upgrade and residential electrical services pages.
Frequently asked questions
How long does a panel upgrade take?
The hands on work is usually a single day for a typical home. The full project, from booking to inspection, often spans a week or two because of utility scheduling and the ESA inspection.
How long is the power off during a panel upgrade?
Several hours on installation day while the old panel comes out and the new one goes in. Your electrician gives you the expected window so you can plan around it.
Why does the whole process take a week or more?
Because it involves your utility for the disconnect and reconnect and the ESA for inspection. The actual labour is short, but coordinating those steps adds calendar time.
Can a panel upgrade be done in one visit?
The installation is usually one visit, but the permit, utility coordination, and inspection happen around it. Some inspections clear the same day, others the next business day.
What makes a panel upgrade take longer than a day?
New service cable or meter base, a panel relocation, older wiring that needs work first, or a utility level change can all extend the timeline.
Want a clear timeline for your panel upgrade? Kolji Bros Electrical gives you a written quote, schedules the utility and permit, and tells you exactly how long your power will be off. Serving Toronto and the GTA.
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