PNW · 10-Q · 2026Q3 · Full report

Regulatory Risk

PINNACLE WEST CAPITAL CORP · 2026-11-03 · Importance 58 · Surprise 74 · In source text

On July 31, 2026, APS applied to the Arizona Corporation Commission (ACC) to raise its long-term debt limit from $9.5 billion to $12 billion. The filing states that APS cannot predict the outcome of the application. The ACC’s December 17, 2024 financing order also limits yearly equity infusions to 2.5% of APS’s total assets on a three-year rolling-average basis, subject to a condition on APS’s equity ratio.

Key facts

• On June 16, 2026, the Arizona Court of Appeals found that the GAC and related residential solar customer increases were imposed without adequate notice or opportunity to be heard; the court denied reconsideration motions on October 29, 2026, and APS plans to petition the Arizona Supreme Court. source
• A lawsuit challenging the ACC’s formula-rate policy was dismissed June 13, 2025; after further appellate proceedings, the Superior Court stayed the merits proceedings on August 28, 2026, and RUCO filed another special-action petition on September 28, 2026 seeking to reverse the stay and enjoin further implementation of retail formula rates. source
• Pinnacle West’s cash from operations is affected by APS’s rates and the timeliness of recovering incurred costs through rates and adjustor recovery mechanisms; regulatory lag may delay recovery and affect operating cash flows. source
• APS does not expect the outcome of the GAC proceedings to materially affect its financial position, results of operations, or cash flows. source
• APS cannot predict the outcome or impact of the litigation over the ACC formula-rate policy. source
• Pinnacle West’s nuclear decommissioning, coal reclamation, and benefit plan costs are recovered in regulated electricity prices. source

Impact estimates