On Feb. 27, 2012, Standard&Poor's Ratings Services affirmed its 'B' short-term issuer credit rating on Tucson Electric Power Co. We subsequently withdrew the rating at the company's request. 2008 Corporate Criteria: Analytical Methodology, April 15, 2008 Tucson Electric Power Co. Long term - corporate credit rating BB+/Stable/-- Short-Term Rating Affirmed Tucson Electric Power Co. Short term - corporate credit rating B Subsequently Withdrawn To From Tucson Electric Power Co. Short-term – corporate credit rating NR B