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Solar panels in Dartmouth, NS

Roofs in Dartmouth get about 1,405 hours of usable sunlight a year — less than 79% 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.

1,405Sun hours / yr
23Panels typical
CA$26,220Cost after credit
13.2 yrPayback
Be careful in Dartmouth. At a 13.2-year payback, solar here is a long-horizon decision, mostly because electricity is relatively cheap (18.3¢/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 Dartmouth → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.

What a typical Dartmouth solar system costs

A 23-panel system (9.2 kW) is about right for an average Dartmouth home using 10,800 kWh a year. It would produce roughly 10,987 kWh annually and offset 100% of that usage.

Estimated economics by system size in Dartmouth, at 18.3¢/kWh
SystemSizekWh/yr Net costSaves/yrPayback
8 panels3.2 kW 3,822CA$9,120 CA$699 13 yrs
12 panels4.8 kW 5,732CA$13,680 CA$1,049 13 yrs
16 panels6.4 kW 7,643CA$18,240 CA$1,399 13 yrs
20 panels8 kW 9,554CA$22,800 CA$1,748 13 yrs
26 panels10.4 kW 12,420CA$29,640 CA$2,051 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 Dartmouth gets 1,405 sun hours

That figure comes from Google's analysis of real rooftops across Dartmouth — 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 Dartmouth reaches about 1,483 hours, roughly 6% better than typical.

The numbers behind this page

Typical usable sunlight1,405 hrs/yr
Unshaded roof1,483 hrs/yr
Electricity rate (Nova Scotia avg)18.3¢/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 here10
Google imagery from2024

Nearby cities

Solar panels in HalifaxNova ScotiaSolar panels in MonctonNew BrunswickSolar panels in FrederictonNew BrunswickSolar panels in PortlandMaineSolar panels in BostonMassachusettsSolar panels in CambridgeMassachusetts

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

Dartmouth solar questions

How many solar panels do I need in Dartmouth?

About 23 panels for an average home. Dartmouth roofs get 1,405 usable sun hours a year, so each 400W panel produces roughly 478 kWh annually.

Is solar worth it in Dartmouth?

At 18.3¢/kWh and 1,405 sun hours, a typical system pays for itself in about 13.2 years and returns roughly CA$23,404 over 25 years. That is slower than the national average, so compare quotes carefully.

How much do solar panels cost in Dartmouth?

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 a battery worth it?Guide How long do panels last?Guide

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