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Solar panels in Trois-Rivières, QC

Roofs in Trois-Rivières get about 1,347 hours of usable sunlight a year — less than 91% 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.

1,347Sun hours / yr
24Panels typical
CA$27,360Cost after credit
31.9 yrPayback
Be careful in Trois-Rivières. At a 31.9-year payback, solar here is a long-horizon decision, mostly because electricity is relatively cheap (7.9¢/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 Trois-Rivières → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.

What a typical Trois-Rivières solar system costs

A 24-panel system (9.6 kW) is about right for an average Trois-Rivières home using 10,800 kWh a year. It would produce roughly 10,992 kWh annually and offset 100% of that usage.

Estimated economics by system size in Trois-Rivières, at 7.9¢/kWh
SystemSizekWh/yr Net costSaves/yrPayback
8 panels3.2 kW 3,664CA$9,120 CA$289 31.5 yrs
12 panels4.8 kW 5,496CA$13,680 CA$434 31.5 yrs
16 panels6.4 kW 7,328CA$18,240 CA$579 31.5 yrs
20 panels8 kW 9,160CA$22,800 CA$724 31.5 yrs
26 panels10.4 kW 11,907CA$29,640 CA$875 33.9 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 Trois-Rivières gets 1,347 sun hours

That figure comes from Google's analysis of real rooftops across Trois-Rivières — 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 Trois-Rivières reaches about 1,460 hours, roughly 8% better than typical.

The numbers behind this page

Typical usable sunlight1,347 hrs/yr
Unshaded roof1,460 hrs/yr
Electricity rate (Quebec avg)7.9¢/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 here9
Google imagery from2015

Nearby cities

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

Trois-Rivières solar questions

How many solar panels do I need in Trois-Rivières?

About 24 panels for an average home. Trois-Rivières roofs get 1,347 usable sun hours a year, so each 400W panel produces roughly 458 kWh annually.

Is solar worth it in Trois-Rivières?

At 7.9¢/kWh and 1,347 sun hours, a typical system pays for itself in about 31.9 years and returns roughly CA$-5,935 over 25 years. That is slower than the national average, so compare quotes carefully.

How much do solar panels cost in Trois-Rivières?

A 9.6 kW system costs about CA$27,360 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 What do solar panels cost?Guide South or west facing roof?Guide

Estimates only, generated 2026-08-22 from Google Solar API rooftop samples and average Quebec 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.