Solar panels in Birmingham, AL
Roofs in Birmingham get about 1,524 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 Birmingham → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Birmingham solar system costs
A 21-panel system (8.4 kW) is about right for an average Birmingham home using 10,800 kWh a year. It would produce roughly 10,881 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,145 | $6,384 | $643 | 9.9 yrs |
| 12 panels | 4.8 kW | 6,218 | $9,576 | $964 | 9.9 yrs |
| 16 panels | 6.4 kW | 8,291 | $12,768 | $1,285 | 9.9 yrs |
| 20 panels | 8 kW | 10,363 | $15,960 | $1,606 | 9.9 yrs |
| 26 panels | 10.4 kW | 13,472 | $20,748 | $1,778 | 11.7 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 Birmingham gets 1,524 sun hours
That figure comes from Google's analysis of real rooftops across Birmingham — 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 Birmingham reaches about 1,632 hours, roughly 7% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,524 hrs/yr |
|---|---|
| Unshaded roof | 1,632 hrs/yr |
| Electricity rate (Alabama avg) | 15.5¢/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 | 12 |
| Google imagery from | 2023 |
Nearby cities
See all of Alabama → statewide sunlight, rates, incentives and every city we've measured.
Birmingham solar questions
How many solar panels do I need in Birmingham?
About 21 panels for an average home. Birmingham roofs get 1,524 usable sun hours a year, so each 400W panel produces roughly 518 kWh annually.
Is solar worth it in Birmingham?
At 15.5¢/kWh and 1,524 sun hours, a typical system pays for itself in about 10 years and returns roughly $25,171 over 25 years. That is a solid return.
How much do solar panels cost in Birmingham?
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 Alabama 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.