Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Sub-Saharan-Africa_GHI_mid-size-map_156x192mm-300dpi_v20170928.png/328px-Sub-Saharan-Africa_GHI_mid-size-map_156x192mm-300dpi_v20170928.png
Panneau solaire équateur
Source google image: https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Sub-Saharan-Africa_GHI_mid-size-map_156x192mm-300dpi_v20170928.png/328px-Sub-Saharan-Africa_GHI_mid-size-map_156x192mm-300dpi_v20170928.png