Quick Answer
Yes. Solar panels can still work well on east or west facing roofs. South facing roofs usually receive the most direct sunlight over the course of the day, but east and west facing systems can still produce strong results, especially when the system is designed around your roof layout, shading, and electricity use.
Does Solar Have to Face South?
No.
South facing panels are often considered ideal in Canada because they typically receive the most sunlight throughout the day. That does not mean an east or west facing roof is a poor candidate for solar.
East facing panels generate more electricity in the morning, while west facing panels produce more later in the day.
For many homes, that timing can actually line up well with when electricity is being used.
How Much Less Energy Do East or West Facing Panels Produce?
The difference depends on several factors, including:
- Roof pitch
- Shading
- Panel placement
- Local weather
- System size
- Nearby trees or buildings
- How much usable roof space is available
An east or west facing system may produce less total annual energy than a perfectly positioned south facing system, but the difference is not always large enough to make solar impractical.
A properly designed system can still offset a significant amount of your household electricity use.
East Facing Solar Panels
East facing panels generate the most power earlier in the day.
This can be helpful for households that use more electricity in the morning for things like:
- Cooking
- Laundry
- Heating or cooling
- Home offices
- Electric vehicle charging
- General household activity
Morning production can be especially useful if your electricity use starts early.
West Facing Solar Panels
West facing panels tend to produce more electricity in the afternoon and early evening.
For many families, that can line up well with peak household activity after work and school.
West facing solar may be useful if your electricity use is highest later in the day due to:
- Air conditioning
- Cooking
- Laundry
- Hot tubs
- Electric vehicle charging
- Evening household use
What About Using Both Sides of the Roof?
In some cases, an east west solar layout can make a lot of sense.
Instead of concentrating production around midday, panels on both sides of the roof can create a broader production window.
That means your system may begin generating earlier in the morning and continue producing later into the afternoon.
This can help spread solar generation across more of the day.
Roof Direction Is Only One Part of the Decision
Orientation matters, but it is not the only factor that determines whether your home is suitable for solar.
A solar assessment should also look at:
- Roof condition
- Available roof area
- Shading
- Roof pitch
- Electrical usage
- Future electricity needs
- Panel layout
- Utility connection requirements
A clear east or west facing roof may sometimes be a better option than a south facing roof that is heavily shaded.
Can East or West Facing Solar Still Save You Money?
Yes, depending on your home and energy use.
The goal of a solar system is not necessarily to achieve the highest theoretical output possible. It is to design a system that makes sense for your property and your electricity consumption.
If your roof has good sun exposure and enough usable space, east or west facing panels can still be a practical option.
Is Your Roof Suitable for Solar?
If you are considering solar in Lethbridge or elsewhere in Southern Alberta, do not assume your roof needs to face south.
At Energy Smart Canada, we can assess your roof orientation, shading, available space, and electricity use to determine what type of solar layout makes the most sense for your home.
A proper system design can help you make the most of the roof you already have.