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Missouri Environ. Imp. & Energy Res. Auth -- Moody's affirms the ratings of Ameren, Union Electric and Ameren Illinois, outlooks stable

Moody's Investors Service ("Moody's") today affirmed the ratings of Ameren Corporation (Ameren), including its Baa1 senior unsecured and Issuer Rating and P-2 short term rating for commercial paper. At the same time, Moody's affirmed the ratings of Ameren's operating companies Union Electric Company (UE, Baa1 Issuer Rating, A2 senior secured, P-2 short-term rating for commercial paper and Baa3 preferred stock), Ameren Illinois Company (Ameren Illinois, A3 Issuer Rating, A1 senior secured, P-2 short-term rating for commercial paper and Baa2 preferred stock).