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Solar panels in Atlanta, Georgia
Atlanta receives 4.63 peak sun hours a day and 1,692 kWh/m² of solar energy a year. That is measured satellite data for Atlanta's coordinates, not a national average — and it changes the panel count.
Atlanta solar data
4.63peak sun hours/day
1,692annual irradiance (kWh/m²)
1.53kWh/day from one 400 W panel
558kWh/year from one 400 W panel
Monthly solar irradiance in Atlanta
| Month | Peak sun hours/day | Share of year |
|---|---|---|
| January | 2.85 | 0.2 |
| February | 3.54 | 0.3 |
| March | 4.30 | 0.4 |
| April | 5.68 | 0.5 |
| May | 5.79 | 0.5 |
| June | 6.76 | 0.6 |
| July | 5.62 | 0.5 |
| August | 6.55 | 0.5 |
| September | 4.15 | 0.3 |
| October | 4.74 | 0.4 |
| November | 2.79 | 0.2 |
| December | 2.64 | 0.2 |
Source: NASA POWER daily point API, parameter ALLSKY_SFC_SW_DWN (global horizontal irradiance), year 2024. Coordinates 33.749, -84.388.
How many solar panels does Atlanta need?
For a typical US household using 900 kWh a month, Atlanta needs about 20 panels of 400 W (7.85 kWp), with a south-facing roof. That is fewer panels than the same household would need in a city with 4.5 peak sun hours.