Solar power in Canada: a homeowner's guide
Solar works well in Canada. Long summer days, cold temperatures that help panels run efficiently, and net metering programs in most provinces mean a well-designed system can cover a large share of a home's electricity use over the year. Here's what homeowners usually ask before going solar.
Do solar panels work in Canadian winters?
Yes. Solar panels make electricity from light, not heat, and they actually run more efficiently in the cold. A panel's output drops slightly as it heats up, so a bright, cold winter day is close to ideal operating conditions.
What changes in winter is the amount of sunlight. Days are shorter and the sun sits lower in the sky, so your system produces less in December and January than in June and July. That's expected, and it's built into every production estimate. The number that matters is your total production over the full year.
What happens when snow covers the panels?
Snow on the panels pauses production until it clears. In practice, that usually doesn't take long:
- Panels are smooth, dark and tilted, so snow tends to slide off once the sun comes out.
- Even a thin layer lets some light through, which warms the panel and speeds up melting.
- After a snowfall, bright snow on the ground reflects extra light, which can give panels a boost on clear days.
You don't need to clear your panels, and climbing onto a snowy roof isn't safe. Production estimates for Canadian systems already account for snowy periods.
How much sun does Canada get?
More than many people expect, especially in summer, when much of southern Canada sees 15 to 17 hours of daylight. The Prairies are among the sunniest regions in the country, but solar works across Canada.
Natural Resources Canada publishes free photovoltaic potential maps with estimates for more than 3,500 municipalities, so you can see how much electricity a solar system can be expected to produce where you live.
How does net metering work?
Your panels produce the most electricity in the middle of the day and in summer, often more than your home is using at the time. With net metering, that surplus flows to the grid and your utility credits you for it. The credits then offset the electricity you draw from the grid at night and during the darker months.
Most provinces offer net metering or a similar program, sometimes called net billing. The rules, credit rates and size limits vary by province and utility, and they change over time. We check the current program for your address when we prepare your proposal.
What does a solar system cost?
Every home is different, so prices vary. The main factors are:
- System size: how many panels you need to cover your electricity use, and how many fit on your roof.
- Your roof: its shape, pitch, material and condition affect how the system is mounted.
- Equipment: the panels, inverter and racking chosen for your home.
- Permits and connection: local permit requirements and your utility's connection process.
- Incentives: rebates, loans or programs available where you live.
Payback depends on the same things, plus your electricity rates and how much power you use. Rather than relying on averages, your proposal gives you one fixed price and an estimated payback for your home.
Is my home a good fit for solar?
A quick way to tell:
- Roof direction: south-facing is ideal; east- and west-facing roofs also work well.
- Shade: the less your roof is shaded by trees or buildings, the better.
- Roof condition: if your roof will need replacing in the next few years, it's usually best to do that first.
- Roof space: enough open area for the panels you need.
- Electricity use: the more you use, the more solar can save.
If you're not sure, a free assessment will tell you. We'll be straight with you if solar isn't a good fit.
How long do solar panels last?
Quality panels are built to last decades. Most come with a 25-year performance warranty that guarantees they'll still produce a set share of their original output at the end of that period. Natural Resources Canada notes that well-functioning systems lose only about 0.6% of their output per year, over an expected lifetime of 25 years or more.
The inverter, which converts the panels' power for use in your home, usually has a shorter warranty than the panels and may need replacing once during the system's life.
Do solar panels need maintenance?
Very little. Rain and snow keep panels reasonably clean, and there are no moving parts. Monitoring lets you check production from your phone, so you can see at a glance that everything is working.
Next steps
If you're curious what solar could do for your home, start with a free assessment. We'll look at your roof and your electricity use, then send a clear proposal with system size, price and expected savings.
See how the process works, learn more about home solar or commercial and farm systems, or request your free quote.