Exhibit 23(B)



            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No.
333-130189 on Form S-3, of our report dated March 1, 2007, relating to the
consolidated financial statements and financial statement schedule of Nevada
Power Company (which report expresses an unqualified opinion and includes an
explanatory paragraph related to the adoption of Statement of Financial
Accounting Standards No. 158) appearing in this Annual Report on Form 10-K of
Nevada Power Company for the year ended December 31, 2006.


Deloitte & Touche LLP
Reno, Nevada
March 1, 2007