NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned an 'A-' rating to the following American Municipal Power, Inc. (AMP) revenue bonds: --$237 million combined hydroelectric projects revenue bonds, series 2016A (Green Bonds). The bonds are expected to sell via negotiation during the week of September 12th. Proceeds will be used to fund capital expenses, repay draws on a line of credit used to provide interim financing, refund a portion of the outstanding series 2009 bonds for interest cost sa