EXHIBIT 15.4

May 3, 2024

To the Board of Directors and Shareholder of

Nevada Power Company

6226 West Sahara Avenue

Las Vegas, Nevada 89146

We are aware that our report dated May 3, 2024, on our review of the interim financial information of Nevada Power Company appearing in this Quarterly Report on Form 10-Q for the quarter ended March 31, 2024, is incorporated by reference in Registration Statement No. 333-267865 on Form S-3.

/s/ Deloitte & Touche LLP

Las Vegas, Nevada