Independent Auditors' Consent We consent to incorporation by reference in Registration Statement No. 33-27452 of Southwestern Public Service Company on Form S-8 of our report dated October 28, 1994, appearing in this Annual Report on Form 11-K of Southwestern Public Service Company Employee Stock Ownership Plan and Trust for the year ended August 31, 1994. /s/ Deloitte & Touche LLP Dallas, Texas January 18, 1995