Exhibit 24.3

ARIZONA PUBLIC SERVICE COMPANY 

RESOLUTIONS FOR FILING 

REGISTRATION STATEMENTS 

FOR THE FEBRUARY 21, 2024 

BOARD OF DIRECTORS MEETING

RESOLVED, that each of the proper officers of Arizona Public Service Company (the “Company”), acting on its behalf, is hereby authorized to prepare, execute and file with the Securities and Exchange Commission an appropriate registration statement or registration statements, which may be part of a registration statement or registration statements filed by Pinnacle West Capital Corporation with respect to the public offering(s) of an indeterminate amount of the Company’s debt securities, and including such amendments, including post-effective amendments, supplements, exhibits and other documents, under the Securities Act of 1933, as amended, as he or she may consider appropriate or advisable from time to time; and further

RESOLVED, that the signature of each of the proper officers or each of the directors of the Company to any such registration statement, amendment, supplement, exhibit, or other document may be effected pursuant to a power of attorney or other similar delegation of authority; and further

RESOLVED, that the proper officers of the Company are hereby authorized and empowered, for and on behalf of the Company, to take such further actions, and to execute, file and deliver such additional documents, instruments and certificates as he or she may consider necessary or advisable to carry out the resolutions heretofore adopted at this meeting.

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