Arizona ACC cooperative large-load process (2026)
Arizona — Corporation Commission Large-Load Process Keeping Electric Cooperative Ratepayers from Subsidizing Data Centers (August 2026)
Arizona · Ariz. Corp. Comm'n — Large-Load Customer Service Agreement Process for Electric Cooperatives (Aug. 2026)
- Status
- In effect
- Took effect
- August 1, 2026
- Applies to
- Data centers and other large-load customers seeking service from Arizona electric cooperatives; the named cooperatives and the Arizona Electric Power Cooperative in submitting large-load service agreements for ACC review.
- Enforced by
- Arizona Corporation Commission
The Arizona Corporation Commission unanimously approved rule changes in August 2026 creating a standardised process for electric cooperatives to bring data centers and other large-load customers online without their existing members paying for it. When a large load arrives, the commission must now determine whether the application is in the public interest, whether its rates are reasonable, and whether other customer classes of the Arizona Electric Power Cooperative would be adversely affected. The co-op context is what makes this distinctive. Rural electric cooperatives are owned by their members and typically have small, fixed customer bases — a single hyperscale customer can represent a larger share of load than the entire residential membership, so an unfunded transmission or infrastructure commitment does not get diluted the way it would at a large investor-owned utility. Chairman Nick Myers framed the process as letting rural Arizona capture economic growth responsibly without being subsidised by other customers. The affected utilities are Mohave, Graham County, Trico, Sulphur Springs Valley and Duncan Valley Electric Cooperatives, together with the Arizona Electric Power Cooperative. Separately, the Arizona legislature responded to data centers in its 2026 session with a three-year pause on tax incentives.
Who is protected: Member-owners and existing customer classes of Arizona's rural electric cooperatives, protected from funding transmission and infrastructure investment made to serve data centers and other large loads.
Legal detail
Arizona Corporation Commission rule changes, unanimously approved August 2026, establishing a standardised large-load customer service agreement process for Arizona electric cooperatives. DETERMINATION REQUIRED of the ACC on each application: whether it is in the public interest, whether its rates are reasonable, and whether it prevents other Arizona Electric Power Cooperative customer classes from being adversely affected. Purpose: prevent cooperative members from bearing the costs of new transmission and infrastructure investment undertaken to serve large-load customers such as data centers. WHY THE COOPERATIVE CONTEXT MATTERS: member-owned rural cooperatives have small fixed customer bases, so a single hyperscale load can exceed the entire residential class in consumption terms and an unfunded commitment cannot be diluted across a large ratepayer pool as at an investor-owned utility — the exposure per existing member is structurally higher than the equivalent at a large IOU. Affected entities named in coverage: Mohave Electric Cooperative, Graham County Electric Cooperative, Trico Electric Cooperative, Sulphur Springs Valley Electric Cooperative, Duncan Valley Electric Cooperative and Arizona Electric Power Cooperative. ACC Chairman Nick Myers is quoted on the framework's purpose. Parallel state action: the Arizona legislature's 2026 session produced a three-year pause on data center tax incentives (not covered by this entry). Docket number not obtained; effective_date is a month placeholder and should be confirmed.
Key facts
| Jurisdiction | Arizona |
|---|---|
| Level | State |
| Strength | Moderate |
| Enacted | August 1, 2026 |
| Citation | Ariz. Corp. Comm'n — Large-Load Customer Service Agreement Process for Electric Cooperatives (Aug. 2026) |
| Private right of action | No, agency enforcement only |
| Penalties | Large-load service agreements not meeting the public interest, reasonable rate and no-adverse-effect criteria are not approved |
| Topics | data-center siting and energy · consumer protection · government use of AI |
| News report | Arizona Commission Moves To Prevent Ratepayers From Subsidizing Data Centers, Large Power Users — AZ Free News |
More AI rules in Arizona
- AZ HB 2175 (AI Insurance Denial — Physician Review) · In effect
- AZ Ct. App. — AI fake citations sanctionable regardless of intent · In effect
- Arizona HB 2311 AI chatbot safety for minors — vetoed 2026 · Vetoed
- Arizona HB 2592 AI state agencies — vetoed 2026 · Vetoed
- Arizona HB 2133 deepfake sexual content — vetoed 2026 · Vetoed
- Arizona HB 2678 — AI-generated CSAM criminalized · In effect
Related data-center siting and energy rules elsewhere
- Superior WI Data Center Moratorium (1-year) · In effect
- Dane County WI Hyperscale Data Center Moratorium · In effect
- Madison WI Data Center Moratorium (1-year) · In effect
- Manitowoc County WI Data Center Moratorium · In effect
- WA SB 5982 (Data Center / Clean Energy) · In effect
- Dayton OH data center moratorium (180-day, Apr 2026) · In effect
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