200 Amp Panel Upgrade Cost in Ontario: Do You Need One for a Heat Pump or EV?

The 200 amp panel upgrade cost in Ontario is typically $2,500–$6,000 or more, including the new panel, meter base, permit and coordination with your local distribution company. But many homes with 100 A service do not need one to add a heat pump or EV charger. The answer depends on a load calculation, the size of any electric backup heat, and whether load management devices can be used.

This guide explains the difference between a panel and a service, how to tell whether you need an upgrade, what typical electric loads draw, and the alternatives that can save thousands.

Panel vs service: what is being upgraded?

People say "panel upgrade" for two different jobs:

• Panel replacement: a new breaker panel (more spaces, newer breakers) on the same size service. Useful when the panel is full, outdated or unsafe.
• Service upgrade: increasing the capacity of the electrical supply to the house, usually from 60 A or 100 A to 200 A. This means a new main breaker and panel, often a new meter base and service entrance cable, and work by your utility to reconnect, sometimes with larger conductors from the street or pole.

A service upgrade is the expensive one. A full panel can sometimes be solved with a subpanel or tandem breakers (where permitted) for a few hundred dollars.

What is the 200 amp panel upgrade cost in Ontario?

Typical 2026 ranges (estimates, before HST):

Situation	Typical range
Panel replacement only, same service size	$1,500–$3,000
100 A to 200 A, overhead service, panel near meter	$2,500–$4,500
100 A to 200 A, underground service or long runs	$4,000–$8,000+
Utility-side work (if the LDC charges for it)	Varies by utility; ask early
Subpanel added (no service change)	$800–$2,000
EV energy management system instead of upgrade	$500–$1,500

Costs rise with older wiring that must be brought up to code, drywall repair, relocating the meter, and travel in rural areas. Your local distribution company (Hydro One, Toronto Hydro, Alectra, Hydro Ottawa, Elexicon and others) sets its own process and any customer charges for service changes.

Do I need a panel upgrade for a heat pump or EV?

Your electrician should complete a load calculation under the Ontario Electrical Safety Code (based on the Canadian Electrical Code). It is based on floor area and the rated load of major appliances, not your current bill or a guess from the number of breakers.

Here is roughly what common electric loads draw. Ratings vary by model; check nameplates.

Load	Typical circuit	Notes
Cold-climate heat pump (2–4 ton, variable speed)	20–40 A, 240 V	Outdoor unit only
Electric backup heat strips in air handler	5–15 kW (about 20–60 A)	Often the biggest load in the house
Level 2 EV charger	30–60 A circuit	40 A is most common
Electric range or induction	40–50 A	Some low-amperage models exist
Electric dryer	30 A	Some heat pump dryers use 120 V
Electric tank water heater	30 A	Heat pump water heaters vary; some 120 V
Hot tub	40–60 A	Dedicated, GFCI-protected
Central air conditioner	15–30 A	Replaced by the heat pump if you switch

Notice that a heat pump often replaces the central air conditioner, so the net increase can be smaller than it looks. The big variable is backup resistance heat. A 15 kW strip heater can push a 100 A home over the limit by itself, while a 5 kW strip or a dual-fuel setup with a gas furnace may fit easily. Our guide to heat pump backup heat explains the options.

Signs an upgrade is likely

• 60 A service, or a fuse panel.
• 100 A service and you plan a heat pump with large electric backup, an EV charger, an electric range and an electric water heater.
• A full panel with no space for new breakers and no room for a subpanel.
• Damaged, recalled or obsolete equipment that should be replaced regardless.
• Aluminium branch wiring or knob-and-tube wiring that your insurer has flagged.

Alternatives to a service upgrade

Before committing thousands of dollars, ask your electrician about these:

1. Right-size the heat pump. A proper heat loss calculation often shows a smaller system is enough. Use our heat pump sizing calculator for a rough starting point, then insist your contractor do a room-by-room calculation.
2. Limit backup heat. Choose a cold-climate model that holds capacity at low temperatures, and size backup strips to what is actually needed, or keep a gas furnace as backup (dual fuel).
3. EV energy management system (EVEMS). These devices monitor the home's total load and reduce or pause EV charging when other loads are high. The electrical code allows them to be considered in load calculations. They are often the cheapest way to add an EV charger to a 100 A home.
4. Lower charger setting. A 24 A charging current still adds about 25–30 km of range per hour.
5. Load-sharing or circuit-sharing devices. Some approved devices let two large loads (for example, a dryer and an EV charger) share one circuit, never running at the same time.
6. Lower-amperage appliances. 120 V heat pump water heaters, 120 V heat pump dryers and some induction ranges designed for lower-amperage circuits reduce demand.

Note: Load management devices must be approved for use in Canada and installed under an ESA permit to count in the load calculation. Ask for this in writing on the quote.

When upgrading is the smart move

An upgrade makes sense when:

• your panel is old, unsafe or obsolete anyway;
• you plan two or more major electric loads within the next several years (heat pump with backup, EV, induction, hot tub);
• alternatives would cost nearly as much and limit future flexibility;
• you are already opening walls during a renovation.

Planning matters. Doing one service upgrade sized for future needs is usually cheaper than adding a load manager now and upgrading anyway in three years.

The upgrade process in Ontario

1. Load calculation and quote from a Licensed Electrical Contractor. Verify licences through ESA (opens in a new tab).
2. Permit: the contractor files a notification of work with ESA.
3. Utility application: the contractor or homeowner contacts the local distribution company to arrange disconnection, any service conductor changes, and reconnection. Some utilities require their own application and may charge for upgrades.
4. Installation day: power is off for several hours, sometimes a full day.
5. Inspection: ESA inspects; the utility reconnects after ESA authorizes it.
6. Records: keep the ESA certificate of acceptance for insurance and resale.

From quote to completion often takes two to eight weeks, mostly due to utility scheduling. If you are replacing a failed furnace in winter, ask whether the heat pump can be installed first with limited backup and the upgrade done later.

Caution: Never attempt service entrance or meter base work yourself. The conductors feeding the main breaker remain live even with the main switched off.

Rebates and costs

Ontario's Home Renovation Savings Program supports heat pumps but, based on its published measures, does not list electrical service upgrades as an eligible rebate item. Budget for any electrical work separately and confirm program details on saveonenergy.ca (opens in a new tab). See the heat pumps complete guide and our Level 2 EV charger installation guide for full project costs.

Frequently asked questions

Can a 100 amp panel handle a heat pump and an EV charger?

Often, yes, with a variable-speed heat pump, modest or gas backup heat, and an EV energy management system. A load calculation will show whether it fits.

How do I find my service size?

Check the main breaker at the top of your panel; it is usually labelled 60, 100, 125 or 200. The meter base and service cable must also be rated for that capacity, which an electrician can confirm.

Will a bigger panel raise my hydro bill?

No. Bills are based on the energy you use, not on your service capacity.

Does my insurer need to know?

Some insurers ask about panel type and service size, especially for older homes. An upgrade with an ESA certificate can help with insurance, and some insurers require replacement of certain older panels.