Investor Presentaiton

Best-in-class service territory supports high tech growth and economic development Our Approach: Focus on Four Main Areas • • Business attraction and expansion Community development . Entrepreneurial support • Infrastructure support 11 First Quarter 2022 • • Supports Influx of Manufacturing and Data Centers - Examples Taiwan Semiconductor Began building $12B factory Chang Chun Petrochemical Building 250k sq ft facility Williams-Sonoma Leased 1.2M sq ft facility Nestle USA Building 625k sq ft facility KORE Power Building 1M sq facility Kohler Co. Building 1M sq ft facility Data centers are projected to create up to 640 MW of capacity needs by 2035 PINNACLE WEST CAPITAL CORPORATION

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