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Solar panels in Lethbridge, AB

Roofs in Lethbridge get about 1,442 hours of usable sunlight a year — less than 68% 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.

1,442Sun hours / yr
23Panels typical
CA$26,220Cost after credit
13.3 yrPayback
Be careful in Lethbridge. At a 13.3-year payback, solar here is a long-horizon decision, mostly because electricity is relatively cheap (18.1¢/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 Lethbridge → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.

What a typical Lethbridge solar system costs

A 23-panel system (9.2 kW) is about right for an average Lethbridge home using 10,800 kWh a year. It would produce roughly 11,276 kWh annually and offset 100% of that usage.

Estimated economics by system size in Lethbridge, at 18.1¢/kWh
SystemSizekWh/yr Net costSaves/yrPayback
8 panels3.2 kW 3,922CA$9,120 CA$710 12.8 yrs
12 panels4.8 kW 5,883CA$13,680 CA$1,065 12.8 yrs
16 panels6.4 kW 7,844CA$18,240 CA$1,420 12.8 yrs
20 panels8 kW 9,806CA$22,800 CA$1,775 12.8 yrs
26 panels10.4 kW 12,747CA$29,640 CA$2,043 14.5 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 Lethbridge gets 1,442 sun hours

That figure comes from Google's analysis of real rooftops across Lethbridge — 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 Lethbridge reaches about 1,572 hours, roughly 9% better than typical.

The numbers behind this page

Typical usable sunlight1,442 hrs/yr
Unshaded roof1,572 hrs/yr
Electricity rate (Alberta avg)18.1¢/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 here8
Google imagery from2022

Nearby cities

Solar panels in CalgaryAlbertaSolar panels in Red DeerAlbertaSolar panels in MissoulaMontanaSolar panels in EdmontonAlbertaSolar panels in SpokaneWashingtonSolar panels in BillingsMontana

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

Lethbridge solar questions

How many solar panels do I need in Lethbridge?

About 23 panels for an average home. Lethbridge roofs get 1,442 usable sun hours a year, so each 400W panel produces roughly 490 kWh annually.

Is solar worth it in Lethbridge?

At 18.1¢/kWh and 1,442 sun hours, a typical system pays for itself in about 13.3 years and returns roughly CA$23,189 over 25 years. That is slower than the national average, so compare quotes carefully.

How much do solar panels cost in Lethbridge?

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 Alberta 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.