...S&P Global Ratings assigned its '##+' rating to the city of Colorado Springs, Colo.'s utilities system revenue refunding bonds series 2020A and 2020B, and its utilities system improvement revenue bonds series 2020C. At the same time, S&P Global Ratings affirmed its '##+', '##+/A-1+', and '##+/A-1' ratings on the system's parity debt outstanding. The outlook is stable. A pledge of net revenues of Colorado Springs Utilities' (CSU) electric, gas, water, wastewater, and streetlight systems secures the bonds. 2020A and 2020B bond proceeds will refund CSU's series 2009A, 2010A-2, 2010B-2, 2010A-1, and 2010D-2 bonds. 2020C bond proceeds will be used to finance various capital improvements to the utility system. The combined utility had about $2.28 billion in debt outstanding as of Dec. 31, 2019....