Being thus, a system of complementation of the net, small hidroeltricas central offices, solar plants and mainly aeolian plants, that would exactly generate more energy in the periods of low sazonalidade of the hidrogrficas basins, seems to be the correct alternative most sensible and (I CASTRATE et al, 2009). REFERENCES: ANEEL? National agency of Electric energy. Atlases of Electric Energy of Brazil. 3 Edition. Brasilia, 2008. Available in: Access in 25 of November of 2009.