Neoenergia SA says that it is in negotiations to acquire a stake of 8.5% in Companhiade Eletricidade do Estado da Bahia - COELBA (BOVESPA:CEEB3) and a 7.01% stake in Companhia Energética do Rio Grande do Norte - COSERN (BOVESPA:CSRN3) from Iberdrola Energía, S.A.U. Neoenergia is already owner of 895 of the ordinary shares of COELBA and of 85% of the ordinary shares of COSERN.