Solar panels in Hattiesburg, MS
Roofs in Hattiesburg get about 1,707 hours of usable sunlight a year — more than 69% 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 Hattiesburg → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Hattiesburg solar system costs
A 19-panel system (7.6 kW) is about right for an average Hattiesburg home using 10,800 kWh a year. It would produce roughly 11,027 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,643 | $6,384 | $618 | 10.3 yrs |
| 12 panels | 4.8 kW | 6,965 | $9,576 | $926 | 10.3 yrs |
| 16 panels | 6.4 kW | 9,286 | $12,768 | $1,235 | 10.3 yrs |
| 20 panels | 8 kW | 11,608 | $15,960 | $1,463 | 10.9 yrs |
| 26 panels | 10.4 kW | 15,090 | $20,748 | $1,579 | 13.1 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 Hattiesburg gets 1,707 sun hours
That figure comes from Google's analysis of real rooftops across Hattiesburg — 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 Hattiesburg reaches about 1,735 hours, roughly 2% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,707 hrs/yr |
|---|---|
| Unshaded roof | 1,735 hrs/yr |
| Electricity rate (Mississippi avg) | 13.3¢/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 | 8 |
| Google imagery from | 2013 |
Nearby cities
See all of Mississippi → statewide sunlight, rates, incentives and every city we've measured.
Hattiesburg solar questions
How many solar panels do I need in Hattiesburg?
About 19 panels for an average home. Hattiesburg roofs get 1,707 usable sun hours a year, so each 400W panel produces roughly 580 kWh annually.
Is solar worth it in Hattiesburg?
At 13.3¢/kWh and 1,707 sun hours, a typical system pays for itself in about 10.5 years and returns roughly $20,937 over 25 years. That is slower than the national average, so compare quotes carefully.
How much do solar panels cost in Hattiesburg?
A 7.6 kW system costs about $21,660 before incentives and $15,162 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 Mississippi 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.