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Solar panels in Cleveland, Ohio
Cleveland receives 3.76 peak sun hours a day and 1,372 kWh/m² of solar energy a year. That is measured satellite data for Cleveland's coordinates, not a national average — and it changes the panel count.
Cleveland solar data
3.76peak sun hours/day
1,372annual irradiance (kWh/m²)
1.24kWh/day from one 400 W panel
453kWh/year from one 400 W panel
Monthly solar irradiance in Cleveland
| Month | Peak sun hours/day | Share of year |
|---|---|---|
| January | 1.19 | 0.1 |
| February | 2.83 | 0.2 |
| March | 3.27 | 0.3 |
| April | 4.51 | 0.4 |
| May | 5.75 | 0.5 |
| June | 5.85 | 0.5 |
| July | 5.98 | 0.5 |
| August | 5.12 | 0.4 |
| September | 4.36 | 0.4 |
| October | 3.37 | 0.3 |
| November | 1.64 | 0.1 |
| December | 1.13 | 0.1 |
Source: NASA POWER daily point API, parameter ALLSKY_SFC_SW_DWN (global horizontal irradiance), year 2024. Coordinates 41.4993, -81.6944.
How many solar panels does Cleveland need?
For a typical US household using 900 kWh a month, Cleveland needs about 25 panels of 400 W (9.66 kWp), with a south-facing roof. That is more panels than the same household would need in a city with 4.5 peak sun hours.