EX-15.5 12 sppc63025ex155.htm SPPC AWARENESS LETTER OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

EXHIBIT 15.5

August 1, 2025

To the Board of Directors and Shareholder of

Sierra Pacific Power Company

6100 Neil Road

Reno, Nevada 89511

We are aware that our report dated August 1, 2025, on our review of the interim financial information of Sierra Pacific Power Company appearing in this Quarterly Report on Form 10-Q for the quarter ended June 30, 2025, is incorporated by reference in Registration Statement No. 333-285816 on Form S-3.

/s/ Deloitte & Touche LLP

Las Vegas, Nevada