Solar panels in Ames, IA
Roofs in Ames get about 1,552 hours of usable sunlight a year — more than 51% 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 Ames → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Ames solar system costs
A 21-panel system (8.4 kW) is about right for an average Ames home using 10,800 kWh a year. It would produce roughly 11,081 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,221 | $6,384 | $557 | 11.5 yrs |
| 12 panels | 4.8 kW | 6,332 | $9,576 | $836 | 11.5 yrs |
| 16 panels | 6.4 kW | 8,443 | $12,768 | $1,114 | 11.5 yrs |
| 20 panels | 8 kW | 10,554 | $15,960 | $1,393 | 11.5 yrs |
| 26 panels | 10.4 kW | 13,720 | $20,748 | $1,522 | 13.6 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 Ames gets 1,552 sun hours
That figure comes from Google's analysis of real rooftops across Ames — 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 Ames reaches about 1,605 hours, roughly 3% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,552 hrs/yr |
|---|---|
| Unshaded roof | 1,605 hrs/yr |
| Electricity rate (Iowa avg) | 13.2¢/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 | 34% |
| Paid for exported power | full retail (net metering) |
| Rooftops sampled here | 6 |
| Google imagery from | 2022 |
Nearby cities
See all of Iowa → statewide sunlight, rates, incentives and every city we've measured.
Ames solar questions
How many solar panels do I need in Ames?
About 21 panels for an average home. Ames roofs get 1,552 usable sun hours a year, so each 400W panel produces roughly 528 kWh annually.
Is solar worth it in Ames?
At 13.2¢/kWh and 1,552 sun hours, a typical system pays for itself in about 11.7 years and returns roughly $19,114 over 25 years. That is slower than the national average, so compare quotes carefully.
How much do solar panels cost in Ames?
A 8.4 kW system costs about $23,940 before incentives and $16,758 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 Iowa 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.