PNW · 8-K · 20260930PR000049

Rate Case Outcomes

PINNACLE WEST CAPITAL CORP · 2026-09-30 · Importance 58 · Surprise 42 · In source text

APS requested a net revenue increase of $609 million in its 2025 Arizona rate case, including a $692 million total revenue requirement increase offset by $83 million of adjustor transfers; the stated day-one customer net revenue impact is 14.69%. APS requested that the rates become effective in the second half of 2026, and the presentation lists a final decision as estimated for December 2026. The case docket is E-01345A-25-0105, and the requested rate design includes direct assignment of generation costs to extra-high-load-factor customers and changes intended to align rates more closely with cost of service.

Key facts

• PINNACLE WEST CAPITAL CORP's 2025 APS rate case request has a $692 million total revenue requirement, an $83 million adjustor transfer reduction, and a $609 million net revenue increase. source
• PINNACLE WEST CAPITAL CORP's 2025 APS rate case request estimates a 14.69% customer net revenue impact on day one. source
• PINNACLE WEST CAPITAL CORP's 2025 APS rate case testimony lists allowed return on equity at 10.70% in APS direct testimony, 9.55%-9.80% in ACC direct testimony, and 10.70% in APS rejoinder testimony. source
• PINNACLE WEST CAPITAL CORP's 2025 APS rate case requests rates to become effective in the second half of 2026. source
• PINNACLE WEST CAPITAL CORP's rate case docket E-01345A-25-0105 had a final decision estimated for December 2026. source

Impact estimates