Solar Panel Calculator for Savannah, GA
Estimate the cost, savings and payback of solar panels in Savannah, GA, using local NREL sunshine data, Georgia prices and electricity rates.
Your result
Enter your numbers and press the button. Your result appears here.
Savannah gets about 5.52 peak sun hours a day on a south-facing roof, so each kW of panels makes about 1,492 kWh a year. That ranks #31 of the 111 cities on this site. Output peaks in May and is lowest in Jan.
Sunshine in Savannah by month
What an 8 kW system makes in Savannah
| Month | Sun hours a day | Output | Bill savings |
|---|---|---|---|
| Jan | 4.08 | 800 kWh | $124 |
| Feb | 4.64 | 808 kWh | $125 |
| Mar | 5.77 | 1,080 kWh | $167 |
| Apr | 6.66 | 1,184 kWh | $183 |
| May | 6.83 | 1,232 kWh | $191 |
| Jun | 6.21 | 1,064 kWh | $165 |
| Jul | 6.50 | 1,144 kWh | $177 |
| Aug | 5.87 | 1,040 kWh | $161 |
| Sep | 5.62 | 968 kWh | $150 |
| Oct | 5.28 | 968 kWh | $150 |
| Nov | 4.65 | 856 kWh | $133 |
| Dec | 4.14 | 808 kWh | $125 |
| Year | 5.52 | 11,936 kWh | $1,848 |
Savings at 15.48¢ per kWh (Georgia average), with every kWh credited at that price.
Cost and payback by system size
At $2.50 per watt, the Georgia average, before incentives.
| System | Cost | Year 1 savings | Payback | 25-yr gain |
|---|---|---|---|---|
| 4 kW | $10,000 | $924 | 11.1 yrs | $11,762 |
| 6 kW | $15,000 | $1,386 | 11.1 yrs | $17,643 |
| 8 kW | $20,000 | $1,848 | 11.1 yrs | $23,524 |
| 10 kW | $25,000 | $2,310 | 11.1 yrs | $29,405 |
| 12 kW | $30,000 | $2,772 | 11.1 yrs | $35,286 |
How many panels you need in Savannah
| Monthly use | System | 400 W panels |
|---|---|---|
| 500 kWh | 4.02 kW | 11 |
| 750 kWh | 6.03 kW | 16 |
| 1,000 kWh | 8.04 kW | 21 |
| 1,500 kWh | 12.06 kW | 31 |
| 2,000 kWh | 16.09 kW | 41 |
Covering 100% of a year's use at 1,492 kWh per kW.
Common questions
Is solar worth it in Savannah?
At local averages an 8 kW system costs about $20,000 before incentives, saves about $1,848 in its first year and pays back in about 11.1 years.
How many peak sun hours does Savannah get?
About 5.52 a day over the year on a south-facing roof at 20°, from 4.1 in Jan to 6.8 in May, according to NREL's PVWatts model.
How much does a 1 kW solar system produce in Savannah?
About 1,492 kWh a year, or 124 kWh a month on average.
Is there a federal solar tax credit?
Not for homeowners who buy their system. The 30% Residential Clean Energy Credit ended for systems installed after December 31, 2025.
Sources
- NREL PVWatts V8 API (south-facing, 20° tilt, 14% losses, typical-year weather): https://developer.nlr.gov/docs/solar/pvwatts/v8/
- EnergySage, Solar panel cost by state (updated November 6, 2026): https://www.energysage.com/local-data/solar-panel-cost/
- U.S. EIA, Electric Power Monthly, Table 5.6.B (residential price, Jan–Aug 2026): https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_6_b