Computershare serves as Pinnacle West's Transfer Agent and Registrar. It also acts as plan administrator of the Pinnacle West Capital Corp.'s Investors Advantage Plan, Stock Purchase and dividend reinvestment program.

To reach Computershare concerning your account, call 1-800-457-2983 (International Shareholders call 1-201-680-6578) or you can access your account online at www.computershare.com/investor. The site allows you to:

	Access Your Shareholder Account Check your account balance Update your contact information Access your account statements and 1099 tax forms Certify Taxpayer Identification Number Request a dividend replacement check Request direct deposit of dividends or enroll in Dividend Reinvestment
	Purchase Initial Shares Reinvest dividends, direct deposit of cash dividends, automatic monthly investment and more.
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	Transfer Stock Information, directions and forms to help you transfer, change and manage your shares.
	Investors Advantage Plan Information Computershare Contact Information VOTE YOUR PROXY