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Solar panels in Windsor, ON

Roofs in Windsor get about 1,426 hours of usable sunlight a year — less than 71% of the cities we've measured. Here's what that means in cost, savings and payback, using real rooftop data rather than a national average.

1,426Sun hours / yr
23Panels typical
CA$26,220Cost after credit
15.8 yrPayback
Be careful in Windsor. At a 15.8-year payback, solar here is a long-horizon decision, mostly because electricity is relatively cheap (15.2¢/kWh). It can still make sense if rates rise or you have local incentives — but check the numbers hard before signing.

Check your specific roof in Windsor → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.

What a typical Windsor solar system costs

A 23-panel system (9.2 kW) is about right for an average Windsor home using 10,800 kWh a year. It would produce roughly 11,151 kWh annually and offset 100% of that usage.

Estimated economics by system size in Windsor, at 15.2¢/kWh
SystemSizekWh/yr Net costSaves/yrPayback
8 panels3.2 kW 3,879CA$9,120 CA$590 15.5 yrs
12 panels4.8 kW 5,818CA$13,680 CA$884 15.5 yrs
16 panels6.4 kW 7,757CA$18,240 CA$1,179 15.5 yrs
20 panels8 kW 9,697CA$22,800 CA$1,474 15.5 yrs
26 panels10.4 kW 12,606CA$29,640 CA$1,710 17.3 yrs

Notice that payback barely improves as systems get bigger, and eventually gets worse. That's because you can only save money on electricity you were going to buy anyway. Once a system covers your usage, extra panels mostly generate exports at a much lower rate.

Why Windsor gets 1,426 sun hours

That figure comes from Google's analysis of real rooftops across Windsor — it already accounts for shading from trees, chimneys and neighbouring buildings, which is why it's lower than the raw "hours of daylight" figures you'll see elsewhere. An unusually open, unshaded roof in Windsor reaches about 1,565 hours, roughly 10% better than typical.

The numbers behind this page

Typical usable sunlight1,426 hrs/yr
Unshaded roof1,565 hrs/yr
Electricity rate (Ontario avg)15.2¢/kWh
Installed cost assumed$2.85/W
Panel size assumed400 W
Typical household usage10,800 kWh/yr
Power used as generated34%
Paid for exported powerfull retail (net metering)
Rooftops sampled here14
Google imagery from2023

Nearby cities

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See all of Ontario → statewide sunlight, rates, incentives and every city we've measured.

Windsor solar questions

How many solar panels do I need in Windsor?

About 23 panels for an average home. Windsor roofs get 1,426 usable sun hours a year, so each 400W panel produces roughly 485 kWh annually.

Is solar worth it in Windsor?

At 15.2¢/kWh and 1,426 sun hours, a typical system pays for itself in about 15.8 years and returns roughly CA$15,154 over 25 years. That is slower than the national average, so compare quotes carefully.

How much do solar panels cost in Windsor?

A 9.2 kW system costs about CA$26,220 before incentives . Prices vary by installer, roof complexity and equipment.

Worth reading before you buy

What your utility pays for exportsChanges payback more than any equipment choice 12 questions to ask before signingIdentical systems vary 30–40% in price Is my roof any good for solar?Guide Is a battery worth it?Guide

Estimates only, generated 2026-08-22 from Google Solar API rooftop samples and average Ontario electricity rates. Not a quote and not financial advice. Your roof, usage, utility plan and local incentives will change these numbers — get real quotes before buying.