Last year Pinnacle West implemented the "Notice and Access" process for delivering proxy material. What that means to you as a shareholder is that the proxy materials are provided to you via the Internet unless you otherwise request. This procedure allows us to provide our shareholders with the information they require in a timely fashion, while also helping us operate more efficiently, save paper and postage costs.

Shareholders will receive a notice and instructions describing how to access the proxy materials and vote and how to receive the printed proxy materials if you would like to receive them via mail. To receive future proxy materials electronically or to review the proxy materials and vote, select the appropriate link below. You may request a hard copy of the proxy materials by calling 1-888-313-0164, e-mailing shrrelations@bnymellon.com or visiting http://bnymellon.mobular.net/bnymellon/pnw.

Registered Shareholders

You are a Registered Shareholder if you have your stock certificate in your possession or your shares are registered directly in your name with our transfer agent, BNY Mellon Shareowner Services.

• Click here to review your proxy materials and to vote online as a registered shareholder. You may also choose this link to consent to electronic delivery of future proxy notices (link hosted by BNY Mellon Shareowner Services).

401(k) Holders

You are a 401(k) Holder if you own stock through the Pinnacle West Capital Corporation Savings Plan.

• Click here to review your proxy materials and to vote online as a 401(k) holder (link hosted by BNY Mellon Shareowner Services).

Beneficial Shareholders

You are a Beneficial Shareholder if you maintain your position in the Company with a brokerage firm, bank trustee or other agent.

• Click here to sign up to receive electronic delivery of future communications materials as a beneficial shareholder (link hosted by Broadridge).

• Click here to review your proxy materials and to vote online as a beneficial shareholder (link hosted by Broadridge)