Electrical Panel Upgrade Cost in Ontario: 100A vs 200A vs 400A (2026)

Your electrical panel is the heart of your home's electrical system. It distributes power from the utility to every circuit in your house. If your panel is outdated, undersized, or unsafe, an upgrade is not optional — it is a necessity for safety, code compliance, and modern electrical demands.

This guide covers electrical panel upgrade costs in Ontario, breaks down pricing by amperage tier (100A, 200A, 400A), explains when you need an upgrade, details ESA inspection requirements, and provides city-by-city cost comparisons across the GTA.

Electrical Panel Upgrade Cost Breakdown

Here are the typical costs for electrical panel upgrades in Ontario in 2026:

Upgrade Type	Cost Range	Timeline	ESA Inspection Required?
100A to 200A service upgrade	$2,500 - $4,500	1-2 days	Yes
Replace 100A panel (no service upgrade)	$1,500 - $2,500	1 day	Yes
200A to 400A service upgrade	$5,000 - $10,000	2-3 days	Yes
Replace 200A panel (no service upgrade)	$2,000 - $3,500	1 day	Yes
Subpanel installation (60-100A)	$800 - $1,800	4-8 hours	Yes
Meter base replacement	$400 - $800	2-4 hours	Yes

What is included in these costs:

New electrical panel (breaker box)

All circuit breakers

Grounding and bonding upgrades

Labour for installation

ESA permit and inspection fees

Utility coordination (if service upgrade required)

Not included:

Service entrance cable replacement (add $800-$2,000)

Meter base relocation (add $500-$1,200)

Knob-and-tube or aluminum wiring remediation (add $2,000-$10,000+)

New circuits or outlets (add $150-$300 per circuit)

Panel relocation (add $1,000-$2,500)

100A vs 200A vs 400A: Which Do You Need?

100A Service: Minimum for Small Homes

What it supports:

1,000-1,500 sq ft home

Basic electrical needs: lighting, outlets, fridge, stove, washer/dryer

Gas furnace and water heater (not electric)

No air conditioning or electric vehicle charger

Typical home profile:

Older bungalow or small home built before 1980

Gas heating and hot water

No major electrical upgrades planned

**Cost to upgrade TO 100A from 60A:** $2,000-$3,500

**Our take:** 100A service is the bare minimum for modern homes. If you are upgrading from 60A, consider jumping to 200A instead. The cost difference is only $500-$1,000, and you avoid another upgrade later.

200A Service: Modern Standard

What it supports:

1,500-3,000 sq ft home

Central air conditioning (up to 5 tons)

Electric dryer and range

Multiple large appliances running simultaneously

ONE Level 2 EV charger (40-50 amps)

Electric hot water heater OR electric furnace (not both)

Home office equipment, electronics, and smart home devices

Typical home profile:

Most homes built after 1980

Standard suburban single-family home

Planning to add AC, finish a basement, or install an EV charger

**Cost to upgrade TO 200A from 100A:** $2,500-$4,500

**Our take:** 200A is the standard for modern homes. If you are planning any major electrical upgrades (basement suite, EV charger, central AC), upgrade to 200A. It is the sweet spot for cost vs. capacity.

400A Service: High-Demand Homes

What it supports:

3,000+ sq ft home

Multiple air conditioning zones

Electric heating AND hot water

TWO or more Level 2 EV chargers

Large workshop or garage with heavy equipment

Pool or hot tub with electric heater

Basement apartment with separate electrical needs

Typical home profile:

Large custom homes

Homes with detached workshops or garages

Multi-generational homes with basement suites

Homes with multiple electric vehicles

**Cost to upgrade TO 400A from 200A:** $5,000-$10,000

**Our take:** 400A is overkill for most homes. Only upgrade to 400A if you have multiple high-demand electrical loads running simultaneously (e.g., two EV chargers + electric heating + pool). Most homes with one EV charger are fine with 200A.

When Do You NEED an Electrical Panel Upgrade?

Code and Safety Requirements

Your panel is unsafe if:

Breakers trip frequently

Panel is hot to the touch

Burning smell near the panel

Rust, corrosion, or water damage inside the panel

Fuses instead of breakers (fuse panels are outdated and unsafe)

Federal Pacific or Zinsco brand panel (known fire hazards — replace immediately)

Your panel is not code-compliant if:

Installed before 1980 and never upgraded

No main breaker disconnect

Aluminum bus bars with copper wiring (fire hazard)

Missing or damaged grounding

Panel is in a bathroom, closet, or other prohibited location

ESA will require an upgrade if:

You apply for a permit for any major electrical work (kitchen reno, basement finishing, etc.)

You install a Level 2 EV charger

You add a basement suite or secondary dwelling

You finish a basement and add new circuits

Renovation and Upgrade Triggers

**Kitchen renovation:** Kitchens require multiple dedicated 20A circuits for counter outlets. If your panel is full or outdated, an upgrade is required.

**Basement finishing:** Adding bedrooms, bathrooms, and living areas means adding circuits. If you have fewer than 10 open breaker slots, upgrade your panel.

**Central AC installation:** A 3-ton AC unit requires a dedicated 30A circuit. A 5-ton unit requires 40-50A. If your panel cannot support this, upgrade.

**EV charger installation:** A Level 2 EV charger (the type installed at home) requires a dedicated 40-50A circuit. Most 100A panels cannot support this. Upgrade to 200A.

**Hot tub or pool:** Electric hot tubs require 40-60A circuits. Pools with electric heaters require 30-60A. These loads often require a service upgrade.

**Basement apartment:** Adding a legal basement suite requires separate electrical metering in most municipalities. This usually means upgrading to 200A or 400A service.

EV Charger Panel Requirements

Electric vehicle adoption is the biggest driver of residential panel upgrades in 2026. Here is what you need to know:

Level 2 EV Charger Electrical Requirements

EV Charger Type	Circuit Size	Power Draw	Recommended Panel Size
Tesla Wall Connector (Gen 3)	60A circuit	11.5 kW	200A minimum
ChargePoint Home Flex	50A circuit	9.6 kW	200A minimum
Flo X5	48A circuit	9.6 kW	200A minimum
Grizzl-E Classic	40A circuit	7.6 kW	200A minimum
Portable Level 2 (240V)	32A circuit	6.1 kW	100A possible (if little else running)

Can I install an EV charger with a 100A panel?

Technically yes, but not recommended. A 100A panel has a maximum capacity of 24,000 watts. A typical home uses 5,000-10,000 watts during peak demand (AC running, cooking, laundry). An EV charger adds 6,000-11,500 watts. This pushes you very close to or over your panel's capacity.

**The solution:** Upgrade to 200A service when installing an EV charger. The cost is $2,500-$4,500, and it future-proofs your home for additional electrical demands.

**Two EVs?** If you have two electric vehicles and plan to charge both simultaneously, you likely need 400A service. Two Level 2 chargers draw 12,000-23,000 watts — too much for a 200A panel to handle safely along with other household loads.

ESA Inspection Requirements

All electrical panel upgrades in Ontario require an **Electrical Safety Authority (ESA)** permit and inspection. This is separate from municipal building permits.

ESA Permit Process

**Licensed electrician pulls the permit** (homeowners cannot pull ESA permits for panel upgrades)

**Electrician completes the installation**

**Electrician requests ESA inspection**

**ESA inspector visits** (typically 3-7 business days after request)

**Inspector checks work and issues Certificate of Inspection (COI)**

**Utility reconnects power** (if service was disconnected)

**ESA permit fees:** $150-$250 depending on scope of work (included in electrician's quote)

What the ESA inspector checks:

Panel is properly grounded and bonded

All circuits are correctly sized (wire gauge matches breaker amperage)

No double-tapped breakers (two wires on one breaker)

Proper clearances around panel (36 inches minimum)

Panel labeling is clear and accurate

AFCI protection on all bedroom circuits

GFCI protection in bathrooms, kitchen, laundry, and outdoor circuits

**What happens if you fail inspection?** The electrician must correct the deficiencies and request a re-inspection. This delays the project by 3-7 days and may incur additional fees ($100-$200 for re-inspection).

City-by-City Cost Comparison (GTA)

Electrical panel upgrade costs vary across the GTA due to differences in labour rates, permit fees, and utility connection charges.

City	100A → 200A Upgrade	200A → 400A Upgrade	Average Permit Fee	Typical Timeline
Toronto	$3,000 - $5,000	$6,000 - $11,000	$200 - $300	3-5 days (inspection wait)
Mississauga	$2,700 - $4,500	$5,500 - $10,000	$180 - $250	2-4 days
Brampton	$2,600 - $4,300	$5,200 - $9,500	$180 - $250	2-4 days
Vaughan	$2,800 - $4,700	$5,700 - $10,500	$190 - $270	3-4 days
Markham	$2,900 - $4,800	$5,800 - $10,800	$190 - $280	3-4 days
Oakville	$3,100 - $5,200	$6,200 - $11,500	$210 - $320	2-4 days
Burlington	$2,900 - $4,900	$5,900 - $10,700	$200 - $300	2-4 days

**Why Toronto costs more:** Higher labour rates, longer inspection wait times, and higher permit fees. Electricians in Toronto charge $90-$130/hour vs. $75-$110/hour in surrounding municipalities.

Hidden Costs and Add-Ons

Service Entrance Cable Replacement

If your existing service entrance cable (the wire from the utility pole or transformer to your panel) is undersized or damaged, it must be replaced during a service upgrade.

**Cost:** $800-$2,000 depending on distance and accessibility

**When required:** Upgrading from 100A to 200A or 200A to 400A often requires replacing the service entrance cable.

Meter Base Replacement or Relocation

Older meter bases may not support 200A or 400A service. The utility may require a new meter base.

**Cost:** $400-$800 for replacement, $500-$1,200 for relocation

Knob-and-Tube or Aluminum Wiring Remediation

If your home has knob-and-tube wiring (common in homes built before 1950) or aluminum wiring (common in homes built 1960-1980), it may need to be replaced before or during a panel upgrade.

**Cost:** $2,000-$10,000+ depending on extent of wiring

**ESA requirement:** ESA inspectors will flag unsafe wiring and require remediation before approving the panel upgrade.

Panel Relocation

If your existing panel is in an unsafe or non-compliant location (bathroom, closet, blocked by furniture), it may need to be relocated.

**Cost:** $1,000-$2,500 for relocation to a nearby wall, more if running new service entrance cable

New Circuits and Outlets

Panel upgrades often coincide with adding new circuits for EV chargers, hot tubs, or basement finishing.

**Cost per circuit:** $150-$300 for standard 15A or 20A circuits, $300-$600 for 40-60A high-demand circuits (EV chargers, hot tubs)

DIY vs. Licensed Electrician

Can you upgrade your own electrical panel?

**No.** In Ontario, all electrical panel work must be performed by a licensed electrician (Licensed Electrical Contractor or Master Electrician). Homeowners are not permitted to pull ESA permits for panel upgrades.

Why this rule exists:

Electrical panels involve working with live 240V service entrance cables — extreme shock and fire hazard

Improper installation can cause house fires, electrocution, and equipment damage

Insurance companies will not cover damage from unpermitted or DIY electrical work

ESA will not inspect or approve homeowner-installed panels

**Penalties for unpermitted work:** Fines up to $50,000, insurance claims denied, forced removal of unpermitted work, and liability for injuries or property damage.

**Our take:** Hire a licensed electrician. The cost difference between DIY (illegal) and professional installation is not worth the safety risk, legal liability, and insurance voiding.

How to Save Money on Panel Upgrades

Bundle with Other Electrical Work

If you are planning multiple electrical projects (panel upgrade, EV charger, basement finishing), bundle them into one contract. Electricians often discount bundled work by 10-15%.

Get Multiple Quotes

Electrical panel upgrade pricing varies significantly between contractors. Get at least 3 quotes from licensed electricians.

What to compare:

Panel brand and model (avoid cheap off-brand panels)

Warranty (minimum 1 year on labour, 10 years on panel)

Timeline (faster is not always better — quality matters)

ESA permit and inspection included?

Service entrance cable replacement included?

Avoid Peak Season

Electricians are busiest in summer (AC season) and during renovation season (spring/fall). Schedule your panel upgrade in winter (January-March) for lower rates and faster availability.

Check for Rebates

Some utility companies offer rebates for electrical upgrades that improve energy efficiency. Check with your local utility:

Toronto Hydro: Home Assistance Program (income-qualified rebates)

Enbridge: Home Efficiency Rebate (up to $5,000 for heat pumps and electric upgrades)

Timeline for Electrical Panel Upgrade

Typical timeline:

Phase	Duration
Get quotes and choose electrician	1-2 weeks
Electrician pulls ESA permit	1-2 days
Utility coordination (if service upgrade)	3-10 days
Panel installation	4-8 hours (1 day)
ESA inspection	3-7 days (booking + inspection)
Utility reconnection (if disconnected)	Same day or next day

**Total timeline:** 2-4 weeks from booking to final approval for standard upgrades

Delays can occur if:

Utility scheduling conflicts (add 1-2 weeks)

ESA inspection fails and requires re-inspection (add 3-7 days)

Hidden wiring issues discovered during installation (add 1-5 days)

Frequently Asked Questions

How much does it cost to upgrade from 100A to 200A in Ontario?

$2,500-$4,500 for the panel upgrade and service entrance upgrade, including ESA permit and inspection. Add $800-$2,000 if the service entrance cable needs replacement.

Do I need a permit to replace my electrical panel?

Yes. All electrical panel replacements and upgrades in Ontario require an ESA permit and inspection. Your electrician pulls the permit and coordinates the inspection.

Can I install an EV charger with a 100A panel?

Technically yes, but not recommended. Most EV chargers require 40-50A circuits, which push 100A panels to their capacity limits. Upgrade to 200A service for safe, reliable EV charging.

How long does an electrical panel upgrade take?

1 day for the physical installation (4-8 hours of work). Total timeline from booking to ESA approval is 2-4 weeks due to permit processing and inspection scheduling.

Can I upgrade my electrical panel myself?

No. Ontario law requires all electrical panel work to be performed by a licensed electrician. Homeowners cannot pull ESA permits for panel upgrades. DIY panel work is illegal and dangerous.

Does a 200A panel increase home value?

Yes. A modern, code-compliant 200A panel is expected in homes built after 1980. Upgrading an outdated 60A or 100A panel can increase home value by $3,000-$8,000 and make your home more attractive to buyers, especially those with electric vehicles.

Key Takeaways

**100A to 200A upgrade costs:** $2,500-$4,500 including ESA permit and inspection

**200A to 400A upgrade costs:** $5,000-$10,000 for high-demand homes

**EV charger trigger:** Installing a Level 2 EV charger usually requires upgrading to 200A service

**ESA inspection required:** All panel upgrades must be inspected and approved by the Electrical Safety Authority

**Licensed electrician mandatory:** Homeowners cannot legally upgrade their own panels in Ontario

**Timeline:** 2-4 weeks from booking to final ESA approval

**City cost differences:** Toronto is most expensive ($3,000-$5,000), surrounding GTA cities are slightly cheaper ($2,500-$4,500)

For detailed electrical service cost breakdowns, visit our [Electrical Cost Guide](/costs/electrical).

Get a free electrical panel upgrade estimate at [RenoNext Price Check](/price-check).

Find licensed, ESA-certified electricians at [RenoNext Pros](/pros).

Electrical Panel Upgrade Cost in Ontario: 100A vs 200A vs 400A (2026)