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Ontario Solar Calculator 2026

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How Much Do Solar Panels Cost in Ontario? (2026 Pricing)

The average cost of solar panels in Ontario is $2.42 to $3.50 per watt, making Ontario one of Canada's most affordable provinces. Pricing includes equipment, installation, permits, ESA approvals, and 25-year warranties.

System SizeTotal Cost (Before Rebates)After HRSP RebateMonthly Savings
5 kW$12,100 - $17,500$7,100 - $12,500$80 - $110
8 kW$19,400 - $28,000$14,400 - $23,000$130 - $160
10 kW$24,200 - $35,000$19,200 - $30,000$160 - $200
12 kW$29,000 - $42,000$24,000 - $37,000$190 - $240

Ontario Solar Incentives & Rebates (2026)

Ontario homeowners have two mutually exclusive pathways for solar savings. Our calculator helps you determine which maximizes your 25-year return.

Option 1: HRSP Rebate

Up to $10,000 in rebates from Save On Energy & Enbridge Gas

  • ✓ $1,000/kW solar (max $5,000)
  • ✓ $1,000/kWh battery (max $5,000)
  • ✓ System must be 5+ kW
  • ✓ Requires battery storage & peak saver enrollment

Restriction: Load displacement only—no grid export allowed.

Best for: High daytime usage, backup power needs, lower upfront cost.

Option 2: Net Metering

Earn credits for excess electricity sent to the grid

  • ✓ Credits at retail rates (9.8¢-20.3¢/kWh TOU)
  • ✓ Unlimited system size
  • ✓ Battery optional
  • ✓ Credits roll 12 months

Important: Credits offset electricity charges only, not delivery/regulatory fees.

Best for: Maximum flexibility, larger systems, evening usage patterns.

Regional Incentives

  • • Durham Region: $2,500-$5,000 deep retrofit rebate
  • • Town of Whitby: Matches Durham rebate dollar-for-dollar
  • • Ottawa: $860/kW for commercial (50+ kW minimum)

Ontario Electricity Rates Explained (2026)

Understanding your rate plan is critical for calculating solar savings. Ontario offers three pricing structures, each affecting solar ROI by 3-5 years.

Time-of-Use (TOU) - Default for Most Ontarians

Off-Peak (7 PM - 7 AM)

9.8¢/kWh

Mid-Peak (7 AM - 11 AM, 5-7 PM)

15.7¢/kWh

On-Peak (11 AM - 5 PM weekdays)

20.3¢/kWh

Ultra-Low Overnight (ULO) - Best for Solar + Battery

Ultra-Low Overnight (11 PM - 7 AM)

3.9¢/kWh

Opportunity: Charge battery at 3.9¢, discharge at 39.1¢ = 35.2¢/kWh spread

On-Peak (4 PM - 9 PM weekdays)

39.1¢/kWh

Additional annual savings with battery: $1,000-$1,500

Your Complete Electricity Bill (4 Components)

  1. 1. Electricity Charge - Based on your rate plan (only part affected by solar)
  2. 2. Delivery Charge - Grid maintenance (~$40-60/month fixed)
  3. 3. Regulatory Charges - OEB, IESO, OER fees (~$5-15/month)
  4. 4. HST - 13% on all charges

📌 Net metering credits offset electricity charges only—you'll always pay $50-75/month minimum for delivery + regulatory.

Solar Production in Ontario Cities

Ontario receives excellent solar irradiance with most cities producing 1,150-1,200 kWh per kW annually. Southern Ontario has some of Canada's best solar potential.

Toronto

1,172 kWh/kW/year

GTA

Mississauga

1,169 kWh/kW/year

GTA

Ottawa

1,198 kWh/kW/year

Ottawa Region

London

1,178 kWh/kW/year

Southwestern

Windsor

1,192 kWh/kW/year

Southwestern

Thunder Bay

1,195 kWh/kW/year

Northern

Seasonal Production Pattern

  • • 70% of annual generation between April-October
  • • Peak month: July (12-14% of annual)
  • • Lowest month: December (2-3% of annual)
  • • Winter production reduced by shorter days & snow cover

Solar Payback Period in Ontario

The average payback period is 8-12 years, depending on system size, consumption, and incentive path chosen.

HRSP Path (8 kW System)

Installation Cost: $24,000

HRSP Rebate: $10,000 (solar + battery)

Net Cost: $14,000

Payback: 8.5 years

25-Year Savings: $46,250

Net Metering Path (8 kW System)

Installation Cost: $24,000

Rebate: $0

Net Cost: $24,000

Payback: 12.8 years

25-Year Savings: $52,750

Post-Payback Profit (Year 13-25)

$32,250

HRSP Path Profit

$28,750

Net Metering Profit

230-320%

Total 25-Year ROI

Frequently Asked Questions

Get answers to common questions about solar in Ontario.

Frequently Asked Questions

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