How Much Does It Cost to Upgrade a 100 Amp Panel to 200 Amp in Toronto?

A 100 amp to 200 amp service upgrade is the most common electrical upgrade we do in Toronto and the GTA. Here is what it actually costs and why the price moves.

For the service itself, see Electrical Panel Upgrades in Toronto & the GTA.

Typical Tron pricing

Typical pricing for a standard underground Hydro service in Toronto and the GTA:

• **100 amp to 200 amp service upgrade — $3,500 to $5,000+**
• 100 amp electrical panel replacement — $2,000 to $3,500
• Fuse box to breaker panel conversion — $2,500 to $3,500
• Electrical subpanel installation — $1,000 to $1,500

These ranges include the ESA permit, inspection coordination, and the Hydro disconnect and reconnect scheduling.

What changes the final price

• **Overhead versus underground service.** Overhead upgrades can cost more when the mast, weatherhead, service conductors, meter base, or attachment point must be replaced.
• **Meter base condition** and whether Hydro requires a new one.
• **Panel location** and the wiring distance from the meter to the panel.
• **Grounding and bonding** corrections required to pass inspection.
• **Existing deficiencies** found once the panel is opened, such as knob-and-tube, aluminum branch wiring, or double-tapped breakers.

Do you actually need 200 amp?

Not always. If the goal is one EV charger, an hourly consumption report from your utility plus a proper load calculation sometimes shows the existing 100 amp service has room, or that an energy-management device avoids the upgrade entirely. A subpanel adds breaker space but does not add capacity.

What is included

We pull the ESA permit under our ECRA/ESA licence, book the Hydro disconnect and reconnect, install and label the new panel, meet the inspector, and hand you the ESA certificate your insurer or a future buyer will ask for. Most upgrades are completed in a single day.

Want a firm number for your home?