Solar and backup power in Ghana
Sunshine across Ghana ranges from 4.59 peak sun hours a day on average in Cape Coast to 5.54 in Wa. The same home needs noticeably more panels in the cloudiest cities, especially in their dullest month.
Household supply: 230 V.
| City | Region | Average sun hours | Least sunny month |
|---|---|---|---|
| Wa | Upper West | 5.54 | August: 4.85 |
| Bolgatanga | Upper East | 5.50 | August: 4.79 |
| Nalerigu | North East | 5.50 | August: 4.79 |
| Tamale | Northern | 5.27 | August: 4.46 |
| Damongo | Savannah | 5.27 | August: 4.48 |
| Dambai | Oti | 5.03 | August: 4.08 |
| Takoradi | Western | 4.95 | June: 4.22 |
| Techiman | Bono East | 4.95 | August: 4.22 |
| Ho | Volta | 4.91 | August: 4.31 |
| Accra | Greater Accra | 4.90 | June: 4.24 |
| Koforidua | Eastern | 4.83 | August: 4.16 |
| Kumasi | Ashanti | 4.71 | August: 3.91 |
| Obuase | Ashanti | 4.71 | August: 3.91 |
| Sunyani | Bono | 4.71 | August: 3.79 |
| Goaso | Ahafo | 4.62 | August: 3.77 |
| Cape Coast | Central | 4.59 | August: 3.99 |
Source: NASA POWER climatology, ALLSKY_SFC_SW_DWN (25-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2025)), retrieved 2026-11-09.