Solar panels in Sioux City, IA
Roofs in Sioux City get about 1,570 hours of usable sunlight a year — more than 53% 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 Sioux City → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Sioux City solar system costs
A 21-panel system (8.4 kW) is about right for an average Sioux City home using 10,800 kWh a year. It would produce roughly 11,210 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,270 | $6,384 | $564 | 11.3 yrs |
| 12 panels | 4.8 kW | 6,406 | $9,576 | $846 | 11.3 yrs |
| 16 panels | 6.4 kW | 8,541 | $12,768 | $1,127 | 11.3 yrs |
| 20 panels | 8 kW | 10,676 | $15,960 | $1,409 | 11.3 yrs |
| 26 panels | 10.4 kW | 13,879 | $20,748 | $1,527 | 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 Sioux City gets 1,570 sun hours
That figure comes from Google's analysis of real rooftops across Sioux City — 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 Sioux City reaches about 1,666 hours, roughly 6% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,570 hrs/yr |
|---|---|
| Unshaded roof | 1,666 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 | 12 |
| Google imagery from | 2016 |
Nearby cities
See all of Iowa → statewide sunlight, rates, incentives and every city we've measured.
Sioux City solar questions
How many solar panels do I need in Sioux City?
About 21 panels for an average home. Sioux City roofs get 1,570 usable sun hours a year, so each 400W panel produces roughly 534 kWh annually.
Is solar worth it in Sioux City?
At 13.2¢/kWh and 1,570 sun hours, a typical system pays for itself in about 11.6 years and returns roughly $19,220 over 25 years. That is slower than the national average, so compare quotes carefully.
How much do solar panels cost in Sioux City?
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.