Solar panels in Flagstaff, AZ
Roofs in Flagstaff get about 1,788 hours of usable sunlight a year — more than 78% 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.
Check your specific roof in Flagstaff → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Flagstaff solar system costs
A 18-panel system (7.2 kW) is about right for an average Flagstaff home using 10,800 kWh a year. It would produce roughly 10,943 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,863 | $6,384 | $739 | 8.6 yrs |
| 12 panels | 4.8 kW | 7,295 | $9,576 | $1,109 | 8.6 yrs |
| 16 panels | 6.4 kW | 9,727 | $12,768 | $1,478 | 8.6 yrs |
| 20 panels | 8 kW | 12,158 | $15,960 | $1,693 | 9.4 yrs |
| 26 panels | 10.4 kW | 15,806 | $20,748 | $1,832 | 11.3 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 Flagstaff gets 1,788 sun hours
That figure comes from Google's analysis of real rooftops across Flagstaff — 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 Flagstaff reaches about 2,117 hours, roughly 18% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,788 hrs/yr |
|---|---|
| Unshaded roof | 2,117 hrs/yr |
| Electricity rate (Arizona avg) | 15.2¢/kWh |
| Installed cost assumed | $2.85/W |
| Panel size assumed | 400 W |
| Federal tax credit | 30% |
| Typical household usage | 10,800 kWh/yr |
| Power used as generated | 35% |
| Paid for exported power | full retail (net metering) |
| Rooftops sampled here | 5 |
| Google imagery from | 2016 |
Nearby cities
See all of Arizona → statewide sunlight, rates, incentives and every city we've measured.
Flagstaff solar questions
How many solar panels do I need in Flagstaff?
About 18 panels for an average home. Flagstaff roofs get 1,788 usable sun hours a year, so each 400W panel produces roughly 608 kWh annually.
Is solar worth it in Flagstaff?
At 15.2¢/kWh and 1,788 sun hours, a typical system pays for itself in about 8.7 years and returns roughly $26,811 over 25 years. That is a solid return.
How much do solar panels cost in Flagstaff?
A 7.2 kW system costs about $20,520 before incentives and $14,364 after the 30% federal tax credit. Prices vary by installer, roof complexity and equipment.
Worth reading before you buy
Estimates only, generated 2026-08-22 from Google Solar API rooftop samples and average Arizona 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.