...NEW YORK (S&P Global Ratings) June 15, 2018--S&P Global Ratings today assigned its 'A' issue rating and '1+' recovery rating to Public Service Co. of Colorado's (PSCo) $350 million of first-mortgage bonds due 2028 and $350 million of first-mortgage bonds due 2048. The ratings reflect our highest expectation of full recovery of principal (100%) in a default scenario, since PSCo's first-mortgage bonds have collateral with ample coverage of the bonds as defined under our secured utility bond criteria. The expectation for full recovery results in a recovery rating of '1+'. PSCo will use proceeds from both "Eligible Green Expenditures" bonds to finance, including refinancing commercial paper already used to fund expenditures, for a 600-megawatt wind generation facility and associated transmission equipment in Colorado at Rush Creek. The issuer credit rating on the utility is 'A-' with a stable outlook. For the issuer credit rating rationale, see the summary analysis on Public Service Co. of...