Solar panels in Memphis, TN
Roofs in Memphis get about 1,615 hours of usable sunlight a year — more than 64% 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 Memphis → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Memphis solar system costs
A 20-panel system (8 kW) is about right for an average Memphis home using 10,800 kWh a year. It would produce roughly 10,982 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,393 | $6,384 | $532 | 12 yrs |
| 12 panels | 4.8 kW | 6,589 | $9,576 | $797 | 12 yrs |
| 16 panels | 6.4 kW | 8,786 | $12,768 | $1,063 | 12 yrs |
| 20 panels | 8 kW | 10,982 | $15,960 | $1,312 | 12.2 yrs |
| 26 panels | 10.4 kW | 14,277 | $20,748 | $1,412 | 14.7 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 Memphis gets 1,615 sun hours
That figure comes from Google's analysis of real rooftops across Memphis — 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 Memphis reaches about 1,697 hours, roughly 5% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,615 hrs/yr |
|---|---|
| Unshaded roof | 1,697 hrs/yr |
| Electricity rate (Tennessee avg) | 12.1¢/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 | 10 |
| Google imagery from | 2024 |
Nearby cities
See all of Tennessee → statewide sunlight, rates, incentives and every city we've measured.
Memphis solar questions
How many solar panels do I need in Memphis?
About 20 panels for an average home. Memphis roofs get 1,615 usable sun hours a year, so each 400W panel produces roughly 549 kWh annually.
Is solar worth it in Memphis?
At 12.1¢/kWh and 1,615 sun hours, a typical system pays for itself in about 12.2 years and returns roughly $16,848 over 25 years. That is slower than the national average, so compare quotes carefully.
How much do solar panels cost in Memphis?
A 8 kW system costs about $22,800 before incentives and $15,960 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 Tennessee 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.