Transmission Line Project

The Chimney Canyon Solar and Transmission Line Project (Project) will support a more reliable grid for Navajo County and the greater Arizona system. The Project will carry electricity from the proposed solar array to the existing Cholla Substation and/or the proposed APS Sitgreaves Switchyard. This Project will require a Certificate of Environmental Compatibility from the Arizona Corporation Commission to be filed October 2025 and is seeking public feedback to support the Project's application.

Clearway Energy is hosting a Virtual Public Meeting from 6 - 7 p.m. on Tuesday, August 12. Please join us to learn more about the project and share your feedback.

Register here

Transmission Line Project Characteristics

Up to two routes
to be developed
Routes are anticipated to be up to
10 miles in length with a right-of-way of at least 150 feet
Pole structures are anticipated to be monopole design, up to 200-ft in height, and spaced approximately 800 - 1,000-feet apart
Multiple potential transmission routes
are under analysis

Approximate locations shown in this map may not be exact.  

Project Timeline

  • File Certificate of Environmental Compatibility application in October 2025.
  • Arizona Transmission Line Siting Committee Public Hearing scheduled for December 15 – 19, 2025.
  • Construction anticipated to begin as early as Q1 2027.

Public Involvement

Join us on August 12, 2025 at 6:00 pm MST for a Virtual Open House.

Our public meeting will be hosted on Microsoft Teams. Once you provide your name and email address, a meeting invite link will be sent to your email, confirming your reservation.

Registration link: 
https://events.teams.microsoft.com/event/b7c4ce2c-19a7-4a29-a8d0-759e2a7cabac@a40fe4ba-abc7-48fe-8792-b43889936400


Please note that you do NOT need a Microsoft Teams account to attend. There is also an option to dial in via phone. Please contact us at chimneycanyonsolar@clearwayenergy.com for assistance.

Other ways to get invovled

Presentation recording from May 12, 2025

Project Materials

Additional materials will be posted here as they become available.

Get in Touch

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