CEC Information
Certificate of Environmental Capability
CEC Hearing
A public hearing will be held before the Arizona Power Plant and Transmission Line Siting Committee (Committee) regarding the application of Harquahala Flats Energy Storage, LLC, for a Certificate of Environmental Compatibility to authorize construction of the Harquahala Flats Battery Energy Storage System Interconnection Project.
The Interconnection Project will consist of building a new aboveground, approximately 2.9-mile-long 500-kilovolt alternating current generation tie transmission line. The Interconnection Project is designed to deliver power to and from the adjacent Harquahala Flats Battery Energy Storage System Project, a proposed up to 450-megawatt standalone battery energy storage system (Battery Facility) and associated on-site substation (Project Substation), to an existing Arizona Public Service Company (APS) transmission line structure near the existing APS Delaney Substation.
The hearing will be held at the Hampton Inn and Suites – Phoenix-Goodyear located at 2000 North Litchfield Road, Goodyear, AZ 85395. The hearing will begin on Monday, Jan. 13, 2025 at 1 p.m. and will continue as necessary through Friday Jan. 17, 2025, beginning at 9 a.m. each day through the completion of the hearing. If any revisions to the hearing schedule are required, the will be noticed on this website and on the Arizona Corporation Commission website at: https://www.azcc.gov/arizona-power-plant/hearings-and-meetings.
Public comment will be taken in a special evening session on Monday, Jan. 13, 2025 beginning at 5:30 p.m. via telephone, zoom, or in person at the Hampton Inn and Suites – Phoenix-Goodyear located at 2000 North Litchfield Road, Goodyear, AZ 85395. Public comment may be taken at the beginning of each hearing day, or at other times during the hearing, at the discretion of the Committee Chairman.
The public has the option to watch the hearing online or listen to the hearing via telephone. The public also has the option to watch the public comment session or participate in the public comment session. All hearing link information is provided below.
Maps of the Interconnection Project and detailed information about the Interconnection Project facilities are contained in the CEC Application, which is available to view and download above and available for inspection at the following locations:
- Arizona Corporation Commission Docket Control Center, Phoenix Office, 1200 West Washington Street, Suite 108, Phoenix, AZ 85007
- Buckeye Public Library – Downtown Library, 310 N. 6th Street, Buckeye, AZ 85326
- Buckeye Public Library – Coyote Branch, 21699 W. Yuma Road, Suite 116, Buckeye, AZ 85326
- Saddle Mountain Unified School District #90, 38201 W. Indian School Road, Tonopah, AZ 85354
Hearing Dates
Harquahala Flats Battery Energy Storage System Interconnection Project CEC Hearing before the Arizona Power Plant and Transmission Line Siting Committee
Jan. 13 at 1 p.m.
Jan. 14 – 17 at 9 a.m.
Watch the live feed of the CEC Hearing here.
Public Comment Session
Harquahala Flats Battery Energy Storage System Interconnection Project CEC Hearing Public Comment Session on Jan. 13 at 5:30 p.m.
To VIEW the public comment session (and NOT PARTICIPATE), watch here.
To PARTICIPATE in the public comment session:
Meeting ID: 838 1593 4818
Passcode: None
Call In Number: +1 669 444 9171