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Power Plant · Industrial Facility

Saguaro Power Plant

Entities

Owner: Arizona Public Service (APS) Pinnacle West Capital Corporation

Operator: Arizona Public Service (APS)

Regulatory or jurisdictional authority: Arizona Corporation Commission (ACC)

Location: Pinal County

Clean Air Act context: U.S. Environmental Protection Agency (EPA)

Status Planning

Synopsis

APS proposes two new units totaling about 720 MW at the existing Saguaro Power Plant, with an estimated 2030 completion.

No verified project-specific ACC line-siting docket, expansion air-permit number, or official queue ID was found.

The community tracker currently labels this project Planning. The dated record and official links below should be used to check that label and any later change.

Timeline & Milestones

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  1. Completed Initial profile public process

    APS Saguaro expansion open house (Red Rock)

    In-person community open house for the proposed ~720 MW expansion (two new units). Contact saguaroexpansion@aps.com / (520) 231-4411.

    APS Saguaro expansion open house (Red Rock)

    In-person community open house for the proposed ~720 MW expansion (two new units). Contact saguaroexpansion@aps.com / (520) 231-4411.

    Full date and time
    Monday, June 15, 2026
    Status
    Completed

    Related projects: Saguaro Power Plant

    Related entities: Pinnacle West Capital Corporation, Arizona Public Service (APS)

  2. Completed Initial profile public process

    APS Saguaro expansion open house

    Second in-person open house for the Saguaro expansion.

    APS Saguaro expansion open house

    Second in-person open house for the Saguaro expansion.

    Full date and time
    Wednesday, June 17, 2026
    Status
    Completed

    Related projects: Saguaro Power Plant

    Related entities: Pinnacle West Capital Corporation, Arizona Public Service (APS)

  3. Completed Initial profile public process

    APS Saguaro expansion — comment deadline

    APS asked the public to submit comments by this date for timely consideration in early permitting. No Line Siting hearing date has been set.

    APS Saguaro expansion — comment deadline

    APS asked the public to submit comments by this date for timely consideration in early permitting. No Line Siting hearing date has been set.

    Full date and time
    Monday, August 31, 2026
    Status
    Completed

    Related projects: Saguaro Power Plant

    Related entities: Arizona Public Service (APS)

  4. Completed Researched project record

    First APS community open house

    Early project outreach session completed.

    APS Saguaro Power Plant Expansion Project
  5. Completed Researched project record

    Second APS community open house

    Early project outreach session completed.

    APS Saguaro Power Plant Expansion Project
  6. Completed Researched project record

    Preferred early-feedback date passed

    APS requested feedback by this date for timely early-permitting review.

    APS Saguaro Power Plant Expansion Project
  7. Upcoming Researched project record

    Existing permit expiration date

    V20692.R01 expires unless renewed or replaced.

    Existing Saguaro Title V permit
  8. Proposed Researched project record

    Possible construction start in 2028

    Applicant projection, contingent on approvals.

    APS Saguaro Power Plant Expansion Project
  9. Proposed Researched project record

    Estimated completion in 2030

    Applicant projection; exact date is unknown.

    APS Saguaro Power Plant Expansion Project

How to get involved

How to participate in Saguaro Power Plant — Existing air permit V20692.R01

Use the verified project record and monitor the correct agency for the next live notice.

Use “Saguaro Power Plant Expansion Project” for applicant feedback and V20692.R01 only when discussing the existing air permit or a related new notice.

  1. Save the exact identifiers: Existing air permit V20692.R01

    Use Existing air permit V20692.R01 in searches, subject lines, comments, and records requests. Do not substitute a similarly named project or general-policy docket.

  2. Read the project-specific record

    Open the official record linked below and verify the present status, scope, meeting location, submission method, and deadline before acting.

  3. Treat old deadlines as closed

    APS’s preferred August 31, 2026 early-feedback date has passed, but APS says feedback remains welcome.

  4. Monitor the next live notice

    Email saguaroexpansion@aps.com or call 520-231-4411. Monitor Pinal industrial permit notices and use any new permit number exactly as noticed.

Additional Resources

Upcoming

No upcoming events currently posted.

Past events

APS Saguaro expansion — comment deadline

APS asked the public to submit comments by this date for timely consideration in early permitting. No Line Siting hearing date has been set.

Full date and time
Monday, August 31, 2026
Status
Completed

Related projects: Saguaro Power Plant

Related entities: Arizona Public Service (APS)

APS Saguaro expansion open house

Second in-person open house for the Saguaro expansion.

Full date and time
Wednesday, June 17, 2026
Status
Completed

Related projects: Saguaro Power Plant

Related entities: Pinnacle West Capital Corporation, Arizona Public Service (APS)

APS Saguaro expansion open house (Red Rock)

In-person community open house for the proposed ~720 MW expansion (two new units). Contact saguaroexpansion@aps.com / (520) 231-4411.

Full date and time
Monday, June 15, 2026
Status
Completed

Related projects: Saguaro Power Plant

Related entities: Pinnacle West Capital Corporation, Arizona Public Service (APS)