Hydropower is conceivably regarded as the major source of
electric power generation and supply in Nigeria because the
country is endowed with large rivers, waterfalls and dams. Only
large hydropower technology is the prominent commercial RE
technology in the electricity supply mix of the country. Due to
economy of scale, large hydropower technology takes the lion
share of the entire commercial RE resources for electricity gen-
eration under any CO2 emission constraints [24]. Unlike fossil fuel,
hydropower is renewable and can supply uninterrupted fuel,
except for the question of water levels. The total potential of
hydropower in Nigeria is about 14,750 MW. However, only
1930 MW, approximately 14%, of that is currently being generated
at Shiroro, Kanji and Jebba representing about 30% of gross
installed grid-connected electricity generation capacity of Nigeria
[25]. This assessment is for large hydropower, which was the type
in operation before the 1973 oil crisis.