NEW YORK (Standard&Poor's) Aug. 30, 2013--Standard&Poor's Ratings Services said today it assigned a new issue rating of 'A-' to Tucson Electric Power Co.'s existing $200 million revolving credit facility and its $186 million letter of credit (LOC) facility. We also assigned a recovery rating of '1+' to the issues. Tucson Electric Power Co. is a vertically integrated, Arizona-based utility and a subsidiary of Unisource Energy. A secured pledge on substantially all utility property at Tucson Electric Power Co. supports the newly rated facilities, which the company first issued in 2010 and amended in 2011. As of June 30, 2013, there were $30 million of outstanding borrowings and $1 million of LOCs issued under the revolving credit
