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Solar panels in Memphis, Tennessee
Memphis receives 4.46 peak sun hours a day and 1,629 kWh/m² of solar energy a year. That is measured satellite data for Memphis's coordinates, not a national average — and it changes the panel count.
Memphis solar data
4.46peak sun hours/day
1,629annual irradiance (kWh/m²)
1.47kWh/day from one 400 W panel
538kWh/year from one 400 W panel
Monthly solar irradiance in Memphis
| Month | Peak sun hours/day | Share of year |
|---|---|---|
| January | 2.10 | 0.2 |
| February | 3.38 | 0.3 |
| March | 4.47 | 0.4 |
| April | 5.20 | 0.4 |
| May | 5.59 | 0.5 |
| June | 6.63 | 0.6 |
| July | 6.26 | 0.5 |
| August | 6.29 | 0.5 |
| September | 4.14 | 0.3 |
| October | 4.63 | 0.4 |
| November | 2.66 | 0.2 |
| December | 2.03 | 0.2 |
Source: NASA POWER daily point API, parameter ALLSKY_SFC_SW_DWN (global horizontal irradiance), year 2024. Coordinates 35.1495, -90.049.
How many solar panels does Memphis need?
For a typical US household using 900 kWh a month, Memphis needs about 21 panels of 400 W (8.15 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.