S&P Global Ratings assigned its 'AA+' long-term rating to Nashville&Davidson County Metropolitan Government, Tenn.'s series 2017A and 2017B electric system revenue bonds. At the same time, we affirmed our 'AA+' rating on the system's outstanding electric system revenue debt. The outlook is stable. The rating reflects the general creditworthiness of the consolidated government's electric system, doing business as Nashville Electric System (NES), and includes its: Deep and diverse customer base in the strong Nashville metropolitan statistical area (MSA) economy, which we consider to be broad and diverse; Role as a distributor of Tennessee Valley Authority (TVA) power and energy, which greatly reduces operating and financial risk to NES; and Good liquidity position with over 100 days' cash on