Solar Power Calculator Ontario

How the Solar Power Calculator Works

The solar power calculator uses a combination of your property's characteristics and energy usage patterns to estimate your solar potential. The key inputs include:

• Annual electricity consumption (kWh)
• Average daily sunlight hours
• Property orientation (south-facing is optimal)
• Roof area available for panels
• Solar panel efficiency
• Electricity rate

The calculator then applies Ontario-specific solar irradiance data and local incentives to provide an accurate estimate of your solar power potential.

Key Factors in Solar Power Calculation

Several factors influence your solar power potential in Ontario:

1. Sunlight Availability: Ontario receives about 4-5 peak sun hours per day, with more in southern regions.
2. Roof Orientation: South-facing roofs receive the most sunlight.
3. Roof Pitch: Steeper roofs can accommodate more panels.
4. Shading: Trees, buildings, or chimneys can reduce solar potential.
5. Panel Efficiency: Modern panels typically have 15-22% efficiency.
6. Electricity Rates: Higher rates increase savings potential.

Ontario-Specific Solar Considerations

Ontario has unique factors that affect solar power potential:

• Solar irradiance ranges from 1200-1400 kWh/m²/year
• Federal and provincial incentives available
• Net metering programs allow you to sell excess power
• Local rebates and tax credits
• Regional variations in sunlight availability

The calculator accounts for these factors to provide Ontario-specific estimates.

Example Calculation

Let's calculate the solar potential for a home in Toronto:

• Annual electricity consumption: 12,000 kWh
• Average daily sunlight hours: 4.5
• Solar panel efficiency: 20%
• Electricity rate: $0.15/kWh

Using the formula:

Solar System Size = (12,000 × 0.8) / (4.5 × 0.20 × 30) ≈ 4.44 kW

Energy Savings = 4.44 × 4.5 × 0.20 × 30 × 0.15 ≈ $1,146/year

This example shows a 4.44 kW system could save about $1,146 annually.