(SeeNews) - Jun 25, 2014 - Brazilian federal utility Companhia Hidro Eletrica do Sao Francisco (Chesf) is investing BRL 3.1 billion (USD 1.393bn/EUR 1.024bn) in wind power in the northeastern states of Piaui, Pernambuco, Bahia and Rio Grande do Norte, local daily Folha reported Tuesday.