Arizona
Arizona Corporation Commission
Commissioners
5Active Proceedings
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State Intelligence
Updated Apr 22, 2026Utility Landscape
Arizona Public Service (APS / Pinnacle West)
IOUMost of Arizona, Metro Phoenix (excl. SRP territory and Tucson)
Rate case Docket E-01345A-25-0105 pending; evidentiary hearing begins May 18, 2026; ACC cut $51M from DSM budget Dec 2025
Tucson Electric Power (TEP / UNS Energy)
IOUTucson/Pima County metro and surrounding areas
Rate case Docket E-01933A-25-0103; evidentiary hearing began April 22, 2026 (~3 weeks); data center ESA for 286 MW Humphreys Peak campus approved Dec 2025
UNS Electric (UNS Energy / Fortis)
IOUMohave and Santa Cruz counties (Kingman, Lake Havasu City, Nogales)
PPFAC surcharge reduction ~$18.50/month credit effective May-Dec 2026; Springerville coal-to-gas conversion approved March 2026
Salt River Project (SRP)
MuniEast Metro Phoenix and surrounding areas
NOT ACC-regulated — constitutional political subdivision; ACC has no rate jurisdiction; SRP serves 59 large load customers with ~7,000 MW combined load
Southwest Gas Corporation
IOUStatewide gas (excl. Tucson metro)
Post-rate-case; MGC commodity rate decreased to $0.36934/therm Jan 2026; avg. residential winter bill ~$70.50/month
UNS Gas (UNS Energy / Fortis)
IOUNorthern Arizona
Docket G-04204A-24-0237: first ACC utility approved for Annual Rate Adjustment Mechanism (formula rate), Feb 2026; ROE 9.61%
Key Issues
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APS general rate case (Docket E-01345A-25-0105): 24+ intervenors; evidentiary hearing begins May 18, 2026 (est. 8 weeks); ACC staff conducting comprehensive APS accounting audit; decision expected late 2026
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TEP general rate case (Docket E-01933A-25-0103): evidentiary hearing began April 22, 2026 (~3 weeks); ~12 intervenors; ALJ recommended order and Commission vote expected second half 2026
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ACC voted unanimously March 4, 2026 to repeal REST (Renewable Energy Standard and Tariff) rules — ended 20-year mandate under which utilities collected $2.3B in surcharges; major market-oriented policy shift away from state-mandated clean energy targets
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Data center load explosion: Arizona top-5 nationally with 2 GW+ operating and 10,600 MW additional planned; ACC large load workshop docket E-00000A-25-0069 (April 2026) established cost-causer consensus — all new infrastructure costs borne by large load customers, no cost shift to residential ratepayers
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Nuclear/SMR: all five ACC commissioners sent bipartisan letter to state legislature supporting small modular reactors, Feb 2026; formal proceedings anticipated
Upcoming
APS rate case evidentiary hearing begins (~8 weeks) — Docket E-01345A-25-0105
APS evidentiary hearing expected to conclude (est.); ALJ drafts Recommended Opinion and Order
TEP rate case decision expected (est.) — Docket E-01933A-25-0103
APS rate case Commission vote and final decision expected (est.)
Commissioner Watch
View all ↗The newly seated Arizona Corporation Commission unanimously elected Commissioner Kevin Thompson as Chair on January 7, 2025.
Rachel Walden was sworn in to the Arizona Corporation Commission on January 6, 2025, beginning her first term after winning election in November 2024.
Rene Lopez was sworn in to the Arizona Corporation Commission on January 6, 2025, beginning his first term after winning election in November 2024.
Staff
105| Name | Title | Phone |
|---|---|---|
| Douglas R R. Clark | Executive Director | (602) 542-3931 |
| Mark Dinell | Securities Division Director | (602) 542-0626 |
| Tanya Gibson | Corporations Division Director | (602) 542-0776 |
| Steve M. Olea | Special Advisor to the Commission | (602) 542-3707 |
| Jane Rodda | Chief Administrative Law Judge | (602) 542-4250 |
| Connie Walczak | Utilities Division Consumer Services Manager | (602) 542-0291 |
| Chris Watson | Safety Division Director | (602) 320-6219 |
| Nicole Garcia | Public Information Officer | (602) 542-0728 |
| Alex Abramson | Public Utilities Analyst | (602) 542-3931 |
| Thomas Abshire | Electric Engineer | (602) 542-0941 |
| Monique Aceves | Public Utilities Analyst II | (602) 542-6652 |
| candrea Allen | Analyst | (602) 364-0235 |
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