Solar Calculator Ontario
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Reviewed by Calculator Editorial Team
This solar calculator helps you estimate your solar potential in Ontario. By entering your property details and electricity usage, you can calculate potential solar panel output, estimated savings, and payback period for a solar installation.
How to Use This Solar Calculator
Using our solar calculator is simple. Follow these steps:
- Enter your property size in square feet
- Select your roof type (flat or pitched)
- Enter your average monthly electricity usage in kWh
- Select your solar panel type (monocrystalline or polycrystalline)
- Click "Calculate" to see your results
Note
This calculator provides estimates based on average Ontario conditions. Actual results may vary based on your specific location, roof orientation, and other factors.
Calculating Solar Potential in Ontario
Ontario receives an average of 4.1 kWh/m²/day of solar radiation, making it an excellent location for solar energy. The calculator uses this data along with your property details to estimate your solar potential.
Formula Used
Solar Potential (kWh/year) = (Property Size × Solar Irradiance × Panel Efficiency × System Size) / 1000
Where:
- Solar Irradiance = 4.1 kWh/m²/day (average for Ontario)
- Panel Efficiency varies by panel type (20% for monocrystalline, 16% for polycrystalline)
- System Size is calculated based on your electricity usage
Key Factors Affecting Solar Output
Several factors influence your solar potential in Ontario:
| Factor | Impact |
|---|---|
| Roof Orientation | South-facing roofs receive the most sunlight |
| Shading | Trees or nearby buildings can reduce output |
| Panel Type | Monocrystalline panels are more efficient but expensive |
| Electricity Usage | Higher usage requires more panels |
Example Calculations
Here are two example calculations for different scenarios:
Example 1: Residential Property
- Property size: 1,500 sq ft
- Roof type: Pitched
- Monthly electricity usage: 300 kWh
- Panel type: Monocrystalline
Estimated annual solar output: 5,200 kWh
Estimated savings: $850/year
Payback period: 5.2 years
Example 2: Commercial Property
- Property size: 3,000 sq ft
- Roof type: Flat
- Monthly electricity usage: 1,200 kWh
- Panel type: Polycrystalline
Estimated annual solar output: 12,800 kWh
Estimated savings: $2,100/year
Payback period: 4.8 years
Frequently Asked Questions
How accurate is this solar calculator?
This calculator provides estimates based on average Ontario conditions. For precise calculations, consult with a local solar installer who can assess your specific property and energy needs.
What factors can reduce my solar potential?
Shading from trees or nearby buildings, roof orientation, and the age and condition of your roof can all reduce your solar potential. These factors are not accounted for in this basic calculator.
How long does it take to install solar panels?
Most residential solar installations take 1-3 days to complete. Commercial installations may take longer depending on the system size and complexity.
Are there any government incentives for solar installations in Ontario?
Yes, Ontario offers the Ontario Green Energy Act (OGEA) which provides feed-in tariffs for solar energy systems. You may also qualify for tax credits and rebates through the Canada Greener Homes Grant.