Ghana is a major energy producer in West Africa. Its oil and gas reserves are high, especially compared to the size of its territory. Several Hydroelectric plants (Dams of Akosombo, Kpong, etc.) and many other smaller built on the rivers of Oti and White Volta produce a great amount of electricity. The large volume generated and the diversity of its energy sources ensure the sustainability of the Ghanaian electricity sector, and therefore the improvement of the supply of energy to the households and to the industry. In light of those facts, why is the solar sector in Ghana promising, and why do many companies develop solar plants in Ghana?