200-Amp Service Upgrade Cost in Ontario: What Homeowners Should Expect

If you live in a GTA home built before 1990, there's a decent chance your electrical service is undersized for the way you live now. I upgrade panels from 60A and 100A to 200 amps every week across Brampton, Mississauga and Toronto — here's exactly what it costs, when you actually need it, and how the process runs. Updated for 2026 with current Ontario pricing.

What does a 200-amp upgrade cost in Ontario in 2026?

Every home is different — the age of the mast, the hydro connection type, and whether the meter base needs replacing all move the number. Any contractor who quotes a firm price without seeing your service entrance is guessing. Our service upgrade quotes are fixed and in writing after a proper look at the panel, mast and meter base.

Six factors that move the price

Two quotes for the "same" upgrade can differ by $2,000 legitimately. Here's what drives it:

• The mast and service cable condition. A rusted mast, frayed overhead service drop, or outdated meter base must be replaced to pass inspection — this is the difference between a panel swap and a full service upgrade.
• Overhead vs. underground service. Underground feeds involve the utility and often trenching; overhead replacements are faster but depend on the condition of the drop and attachment hardware.
• Panel location and access. A basement panel beside the meter is straightforward. A panel on the far side of a finished home adds long feeder runs through finished space.
• Utility coordination fees and timelines. Toronto Hydro, Alectra and Hydro One each have their own connection charges and scheduling windows — sometimes days, sometimes weeks.
• What we find when the old panel opens. Decades of piecemeal work — shared neutrals, double-tapped breakers, circuits fed from who-knows-where — get corrected to code during the upgrade.
• Drywall and finish repairs. Most swaps leave minimal damage, but moving a panel location or replacing a long run can add patching and painting.

The ESA permit: what it costs and why it protects you

The word "permit" makes homeowners nervous, so here's the honest picture. A service upgrade in Ontario requires a notification of work to the Electrical Safety Authority, with fees typically totalling $200–$450 depending on the scope. That fee buys you something no handshake can: an independent inspection of the most dangerous part of your electrical system, and a Certificate of Acceptance that your insurer, your buyers and your future self will all ask for. Unpermitted panel work is also a common home-inspector flag on resale — I've watched deals get renegotiated over exactly this.

100A vs 200A: what the numbers actually mean

Your service size is the maximum power your home can draw from the grid at once — 100 amps at 240 volts equals about 24 kilowatts. Here's roughly what a modern GTA household stacks up:

• Central air conditioning: 20–50A
• Electric range or induction cooktop: 30–50A
• Electric dryer: 30A
• EV charger (continuous load): 32–48A
• Hot tub: 40–60A
• Baseboard or electric furnace heat: 40–80A+

Add the obvious combinations and a 100-amp service is mathematically full before you plug in the EV. A 200-amp service doubles that ceiling — and note that continuous loads like EV chargers count more heavily in the load calculation because they run for hours at a time. This is why the EV conversation so often becomes the panel conversation.

The when-you-need-it checklist

You likely need a 200-amp upgrade if any of these apply:

• You're installing an EV charger and the load calculation says 100A won't cover it
• Your insurer has asked about service size, or refused renewal over a fuse panel or 60-amp service
• A hot tub, sauna or pool is going in — outdoor lifestyle loads are 240V and hungry
• Central AC plus an electric range already trip breakers when they run together
• You're finishing a basement, adding a legal suite, or building an addition
• You're buying or selling an older home and the inspection flagged undersized service

In newer Brampton areas like Castlemore or Goreway, most homes already have 200 amps. In older stock — downtown Toronto semi-detached homes, post-war pockets of Scarborough, mid-century Mississauga — 60-amp fuse service and 100A panels are still routine finds.

Utility coordination: Alectra vs Toronto Hydro vs Hydro One

Your local distribution company (LDC) disconnects and reconnects the power. In practice:

• Alectra (Brampton, Mississauga, Vaughan, Markham, Richmond Hill): scheduling is usually measured in days to two weeks; connection fees vary by municipality within its territory.
• Toronto Hydro: the busiest queue in the province — allow extra lead time, and expect higher coordination fees in older downtown service classes.
• Hydro One (Caledon and rural areas): underground rural services can take longer to schedule and may involve more site work.

This is why "we'll do it Friday" promises deserve a raised eyebrow. A licensed contractor books the utility slot as part of the project, not after it.

Heat pumps and the next wave of electrical load

Worth flagging because it changes the math for many homeowners: Ontario's push toward cold-climate heat pumps and electric water heating means the homes being bought and sold today will carry loads their panels were never designed for. A heat pump backup element can draw 60–80 amps on its own, and converting a gas range or dryer to electric adds more. If your panel is 100 amps and any of those conversions is in your five-year plan, the cheapest moment to upgrade is now — bundled with whatever project triggered the conversation — rather than as a second mobilization later. Every week we meet homeowners who upgraded for the EV and wish they'd spec'd for the heat pump at the same time.

Signs your current service is already overloaded

You don't need to read the panel label to know you're at the limit. The house tells you: breakers trip when the AC and oven run together; lights dim momentarily when the dryer starts; you've run out of breaker spaces and an electrician has stacked tandem breakers; or your insurance renewal questionnaire asks directly about service size. Any one of these is worth a free assessment — together, they almost always mean the panel is telling you something.

The upgrade itself: what happens on the day

A typical service upgrade is one working day. The utility disconnects power in the morning; we replace the panel, mast, meter base and service cable; the rough-in inspection happens before re-energization where required; the utility reconnects; final inspection and certificate follow. Power is usually off four to eight hours total. The day before, we move anything blocking the panel, confirm the freezer is stocked accordingly, and make sure someone is home for the utility window.

Choosing the right panel while we're in there

While we're in there, it pays to think ahead. We install panels with more spaces than today's circuits need — a 40-space or 42-space 200-amp panel costs little more than a cramped 24-space unit and saves you a sub-panel later. Ask about surge protection built into the panel, which guards today's electronics against grid spikes, and whole-home energy monitoring if you like data. These add modest cost on upgrade day and real value for the life of the home. The homeowners who get burned by panel-upgrade pricing are almost always the ones who compared two numbers without asking what each included — our fixed prices include a careful assessment of the service entrance so the number you approve is the number you pay, and anything unusual gets photographed and explained before additional work proceeds.

Realistic timeline, end to end

From signed quote to energized 200-amp service, expect two to six weeks in most of the GTA: a week or so for permits and utility scheduling, one working day on site, then inspection. Rush jobs around a closing date are sometimes possible — we've pulled them off in a week — but don't count on it. If you're listing your home, upgrade before the for-sale sign goes up.

Questions homeowners ask me

Does a 200-amp upgrade need a permit?

Yes — a service upgrade always requires an ESA notification of work and inspection, and only a licensed electrical contractor can file one. Anyone who offers to "skip the permit to save you money" is asking you to carry all the risk: denied insurance claims, failed resale inspections, and no Certificate of Acceptance. The fees are $200–$450 and they're the best-value line item on the whole invoice.

How long will my power be off?

Typically four to eight hours on upgrade day. We schedule the utility disconnect for the morning, complete the panel and service work, and have the reconnect done the same day in the vast majority of jobs. We'll tell you the day before what time to expect the outage so the freezer, sump pump and work-from-home setup are planned around it.

Can I keep my old mast and meter base?

Sometimes — and that's exactly the difference between a $2,500 panel swap and a $5,500 full service upgrade. If the mast is sound, the meter base is modern and the service cable tests fine, we leave them. If any of the three is corroded, undersized or outdated, the inspector won't pass it and replacement is non-negotiable. A good quote photographs all three before pricing.

Is a 200-amp upgrade worth it for resale?

Buyers' inspectors flag undersized service on nearly every older GTA resale, and nervous buyers negotiate hard off inspection reports. An upgraded panel with an ESA certificate in the disclosure package removes the argument — and in multiple-offer situations, "200-amp service, certificate available" is a line that genuinely helps. Expect the cost to largely recover at sale and the certainty to help the deal happen at all.

What about 400-amp service?

For most homes, overkill. But if you're planning an EV charger plus a hot tub plus a legal basement suite or a pool house on a large Vaughan or Caledon property, 400A is worth pricing while we're already coordinating with the utility — the marginal cost is far lower during an upgrade than as a standalone project later. We'll run the honest load calculation and tell you if 200 covers you.

Can I just add a sub-panel instead?

A sub-panel adds circuit spaces, not capacity. If your 100-amp service is mathematically full, a sub-panel changes nothing about the limit you're hitting — the main service is still the ceiling. Sub-panels are the right answer for garages, pool houses and finished basements after the service is adequate; they're a band-aid when it isn't.

What a proper quote includes — and the red flags

A professional 200-amp quote is a document, not a number. Ours itemizes the panel and breakers, mast and meter base assessment, service cable, utility coordination fees, ESA fees, labour, and drywall allowances if applicable — fixed, in writing, with photos of what we found. Red flags to watch for: a firm price quoted over the phone without seeing the service entrance, no mention of ESA fees or utility coordination, "we'll handle the permit later," and quotes dramatically below every other one. That last one almost always means the permit, the inspection, or the mast work is missing — and it becomes your problem at the worst possible moment.

Is it worth it?

Almost always, yes. A 200-amp panel adds resale value, satisfies insurers, and future-proofs the home for everything you're likely to add — EVs, heat pumps, hot tubs, automation. The homes we see struggling in 2026 are the ones where owners strung along on 100 amps with tandem breakers and power strips. Electricity demand in Ontario homes has only one direction, and it isn't down.

Not sure what your home has? A service assessment is free — call 416-903-7166 and we'll tell you honestly whether you need the upgrade now, or can safely wait.