Solar questions homeowners ask most

These are the questions we hear again and again, answered as plainly as we can in late 2026. For the wider picture, our solar basics hub collects the longer guides.

Does solar work on cloudy days?

Yes, at a lower level. Panels still gather diffuse light, often producing a fraction of their sunny-day output. Over a year, plenty of cloudy places do well, because long summer days make up for dull weeks. Even northern cities get useful sun, and the Prairies, especially southern Alberta and Saskatchewan, are among the sunniest parts of the country.

What about snow and cold?

Cold itself is kind to panels, since low temperatures slightly raise voltage and efficiency. Snow is the nuisance. A light layer usually slides off tilted panels once the sun warms them, and the yearly loss is typically a modest share of output. Do not climb up and scrape, which can damage the surface or hurt you. For the winter picture in detail, see solar in Canadian winters.

How much does solar cost, and does it pay back?

Typical installed prices have recently been about $2.50 to $3.80 per watt (CAD) before incentives, so a 6 to 8 kW system lands roughly in the mid-teens to high-twenties of thousands. Payback is often quoted around 8 to 15 years, depending on your province and rates. Worked examples are in solar costs and payback.

Are there rebates?

No federal residential solar grant is open as far as we know. The federal grant closed to new applicants in early 2024 and the federal loan stopped taking applications on 1 October 2025, according to Natural Resources Canada as reported by several sources. Provincial programmes are the main source now and they change often, so check how to find current incentives.

Can panels damage my roof?

A careful installation should not. The risk is in the details: how fasteners are sealed and whether the roof was in decent shape to begin with. Ask the installer how they flash every attachment point and what they guarantee in writing.

How long do solar panels last?

Good panels commonly carry performance warranties of about 25 years and often keep working beyond that, losing around 0.4 to 0.6 percent of output a year. Inverters tend to need replacement sooner, somewhere around 10 to 15 years for some designs, though some are warrantied longer. Our guide on how long solar panels last covers the details.

How much maintenance is needed?

Less than most appliances. Rain does much of the cleaning. A look at the panels once or twice a year and a check of your monitoring app covers most needs. Our maintenance checklist has the details.

Will I still have power during an outage?

Not automatically. For safety, a standard grid-tied system shuts down when the grid goes down, so line workers are not put at risk. To keep the lights on you need a battery and equipment that can run in backup mode. Batteries often run from 5 to 15 kWh, and a whole-home backup needs much more, which is why they cost so much. See battery storage basics.

What happens to extra power I make?

It goes to the grid, and you are credited for it. How well depends on where you live. There is no national net metering law, and each province sets its own rules. Most credit exports at or near the retail rate, with credits that often roll over for about a year, while Alberta, Manitoba and Saskatchewan pay less. These rules were reported to be changing in several provinces in 2026, so confirm with your utility.

Is solar worth it if I plan to move?

It can be, if you expect to stay long enough to see payback, or if your market tends to reward efficient homes. Ask a local real estate professional how buyers in your area view solar. Avoid arrangements that complicate a sale, such as certain leases.

Is solar hot water or solar electricity better?

Neither is better in general. Panels are more flexible, because electricity can run anything, including a heat pump water heater. Collectors are efficient at one job, heating water, and a well-sized system often supplies about half of annual water heating energy. We compare them in panels versus solar water heating.

Do I need a south-facing roof?

South is best, but east and west slopes work too, at somewhat reduced output. Shade matters more than direction. Our roof checklist gives a first answer in ten minutes.

How do I know a quote is fair?

Collect several, compare them on price per watt and warranties, and ask each company to explain its production estimate. Our installer guide shows how.

What if I rent or live in an apartment?

You may not be able to install anything yourself. Some places offer shared or community solar, where you subscribe to a portion of a larger array. Check whether your region or utility has such a scheme, and read the terms carefully. Condo owners face board approval as well, covered in solar for condos.

Is solar good for the environment?

Generating electricity from sunlight produces no emissions while running. Manufacturing has a footprint, but for most homes the equipment makes up for it within a few years of operation, and it keeps going for decades. Ask your installer what end-of-life recycling options they offer.