Notice to the Market Rio de Janeiro, September 21, 2009 Pursuant to Official Letter CVM/SGE/001/03 of January 22, 2003, and article 12, caput, of CVM Instruction 358 of January 3, 2002, Terna Participações S.A. (“Company”) (Bovespa: TRNA11) hereby announces that on September 18, 2009 it received a communication from BNY MELLON SERVIÇOS FINANCEIROS DISTRIBUIDORA DE TÍTULOS E VALORES MOBILIÁRIOS S.A. announcing that investment funds and non-resident investors managed by JGP GESTÃO DE RECURSOS LTDA. and/or JGP GESTÃO PATRIMONIAL LTDA. (“Investors”) and managed or legally represented by BNY MELLON SERVIÇOS FINANCEIROS DISTRIBUIDORA DE TÍTULOS E VALORES MOBILIÁRIOS S.A., have acquired preferred shares issued by the Company and now hold a total of 4,165,400 (four million, one hundred sixty-five thousand, four hundred) preferred Company shares, equivalent to 6.94% (six point nine four) of the Company’s preferred stock. According to the investor, the acquisitions are not intended to alter the Company’s ownership structure or management. Sincerely, Alessandro Fiocco CEO and Investor Relations Officer Terna Participações S.A.,