Strathroy, Canada presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations typical of its Northern Temperate Zone climate. The solar production data reveals distinct patterns that potential solar installers should understand before making investment decisions.
Seasonal Solar Performance
Summer emerges as the peak solar generation season in Strathroy, producing 6.37 kWh per day for each kilowatt of installed solar capacity. This represents the optimal time for solar energy production when panels operate at maximum efficiency. Spring follows as the second-best season with 5.50 kWh per day per kW, making the warmer months highly productive for solar installations. Autumn shows a notable decline in solar output, dropping to 3.22 kWh per day per kW as daylight hours decrease and weather patterns shift. Winter presents the most challenging conditions for solar generation, with output falling to just 1.88 kWh per day per kW - less than one-third of summer production levels.Optimal Panel Configuration
For maximum year-round solar production in Strathroy, fixed solar panels should be tilted at 37 degrees facing south. This angle has been calculated to optimize total annual energy output by accounting for the sun's changing position throughout the year and weighting the angles based on actual solar irradiance data for this specific latitude.Local Environmental Challenges
Several environmental factors in Strathroy can significantly impact solar energy production and require careful consideration during installation planning. Snow accumulation during winter months poses the most substantial challenge to solar generation. Heavy snow cover can completely block panels, reducing output to near zero until cleared. Ice formation can create similar problems and potentially damage panels if not properly addressed. The region's frequent cloud cover, particularly during autumn and winter, naturally reduces solar irradiance reaching the panels. While this is reflected in the seasonal output figures, extended periods of overcast skies can create unpredictable variations in daily production. Seasonal storms, including ice storms common to southwestern Ontario, can damage solar installations or create debris that blocks panels. High winds during these weather events can also stress mounting systems if not properly engineered.Preventative Installation Measures
Several strategies can help maximize solar production despite these environmental challenges:- Install panels with adequate tilt (the recommended 37 degrees) to promote natural snow shedding
- Use mounting systems designed for high snow loads typical of the region
- Position panels to minimize shading from trees that may accumulate ice or lose branches
- Select high-quality panels with anti-reflective coatings that perform better in low-light conditions
- Implement proper drainage systems to prevent ice dam formation around panel installations
Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 569 locations across Canada. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Canada by location
Solar output per kW of installed solar PV by season in Strathroy
Seasonal solar PV output for Latitude: 42.9621, Longitude: -81.6212 (Strathroy, Canada), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:
 
Ideally tilt fixed solar panels 37° South in Strathroy, Canada
To maximize your solar PV system's energy output in Strathroy, Canada (Lat/Long 42.9621, -81.6212) throughout the year, you should tilt your panels at an angle of 37° South for fixed panel installations.
As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.
We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.
Seasonally adjusted solar panel tilt angles for Strathroy, Canada
If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Strathroy, Canada. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 37° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 27° South in Summer | 46° South in Autumn | 57° South in Winter | 36° South in Spring |
Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.
This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.
Calculate solar panel row spacing in Strathroy, Canada
We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Strathroy, Canada.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - Minimum Spacing:
We add the shadow length to the horizontal space occupied by tilted panels.
This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.
Topography for solar PV around Strathroy, Canada
Topography Around Strathroy
The landscape surrounding Strathroy, Ontario is characterized by gently rolling farmland typical of southwestern Ontario's agricultural heartland. This region sits within the Great Lakes Lowlands physiographic region, featuring relatively flat to slightly undulating terrain with elevations generally ranging between 200 and 300 meters above sea level. The area was shaped by glacial activity during the last ice age, leaving behind fertile clay and loam soils that have made this one of Canada's most productive agricultural regions.
The topography is dominated by broad, open fields with gentle slopes that rarely exceed gradients of more than a few degrees. Small woodlots and creek valleys provide the only significant variations in elevation, creating a patchwork landscape of cultivated fields interspersed with natural areas. The Sydenham River system drains much of the region, with its tributaries carving shallow valleys through the otherwise level terrain.
Optimal Areas for Large-Scale Solar Development
The flat to gently rolling topography around Strathroy presents excellent opportunities for large-scale solar photovoltaic installations. The most suitable areas would be the extensive open agricultural fields that stretch in all directions from the town, particularly those with south-facing slopes or level ground that can accommodate optimal panel orientation.
Areas to the south and southwest of Strathroy offer particularly favorable conditions, where large contiguous parcels of farmland provide ample space for utility-scale solar arrays. The gentle southern slopes in these areas would naturally complement solar panel positioning for maximum energy capture throughout the day. The relatively uniform elevation across these agricultural lands eliminates concerns about shading from significant topographical features.
The region's minimal tree cover outside of designated woodlots and creek corridors means that most open agricultural areas would face few natural obstructions to solar radiation. The flat terrain also simplifies construction logistics and reduces development costs compared to more challenging topographies. Areas along the major transportation corridors, including Highway 402 and regional roads, would offer additional advantages for grid connection and maintenance access.
Former agricultural fields that may no longer be in active production would represent ideal candidates for solar development, as they typically retain the beneficial characteristics of level ground and clear sightlines while potentially facing fewer land-use conflicts. The consistent soil conditions across the region, primarily clay-based agricultural soils, would provide stable foundations for solar mounting systems.
Canada solar PV Stats as a country
Canada ranks 23rd in the world for cumulative solar PV capacity, with 3,630 total MW's of solar PV installed. This means that 0.70% of Canada's total energy as a country comes from solar PV (that's 38th in the world). Each year Canada is generating 96 Watts from solar PV per capita (Canada ranks 40th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Canada?
There are several incentives for businesses to install solar power systems in Canada. These incentives vary by province and can include:
1. Federal Tax Incentives:- Accelerated Capital Cost Allowance (CCA): Businesses can write off the full cost of clean energy equipment in the year it's put into use.
- Ontario: Save on Energy program offers incentives for businesses to reduce energy consumption.
- Alberta: Energy Efficiency Alberta offers rebates for solar PV installations.
- British Columbia: BC Hydro offers a net metering program. BC Hydro also offers rebates for solar panels and battery storage.
- Nova Scotia: Solar Electricity for Community Buildings Program.
Many provinces ofer net metering, allowing businesses to sell excess electricity back to the grid.
4. Grants and Loans:Some provinces offer grants or low-interest loans for renewable energy projects.
5. Carbon Pricing:The federal carbon pricing system can make solar more competitive compared to fossil fuels.
6. Municipal Incentives:Some cities offer additional incentives or property tax reductions for solar installations.
7. Reduced Operating Costs:While not a direct incentive, businesses can significantly reduce their long-term energy costs.
Note: Incentives and programs can change over time, so businesses should check with local authorities and energy providers for the most up-to-date information.
Do you have more up to date information than this on incentives towards solar PV projects in Canada? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 5th of August 2025
Last Updated: Friday 8th of August 2025
Tell Us About Your Work
We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.
Feeling generous?
Share this with your friends!

Compare this location to others worldwide for solar PV potential
The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.
However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.
Helping you assess viability of solar PV for your site
Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.




