Press Release

Southline Transmission Project Selected for Second Round of Transmission Facilitation Program

October 3, 2024

U.S. Department of Energy’s Continued Support Highlights Southline’s Progress and Vital Role in Desert Southwest Energy Needs October 3, 2024 (Lordsburg, New Mexico) –Today, the U.S. Department of Energy (DOE) reaffirmed its confidence in the Southline Transmission Project by selecting…

Southline Transmission Project Selected as Part of a $1.3 Billion Commitment to Build Out Nation’s Electric Transmission

October 30, 2023
The United States Department of Energy today announced Phase 1 of the Southline Transmission Project as one of three transmission lines selected as part of a $1.3 billion commitment through the Bipartisan Infrastructure Law’s Transmission Facilitation Program….

Building America's Next-Generation Infrastructure to Power Our Future.

Links
Contact

Black Forest Partners and Grid United are co-developing Southline Transmission Project.

© 2026. Grid United LLC. All Rights Reserved.

Notice of Public Hearing

CEC Apache to Vail Upgrade Route

Southline Transmission, LLC. invites the public to participate at a public hearing before the Arizona Power Plant and Transmission Line Siting Committee (Committee). Southline Transmission, LLC. is submitting an Application to amend the Certificate of Environmental Compatibility (CEC) granted by the Commitee in Line Siting Case No.173 (CEC 173) to obtain a CEC for the Apache to Vail Upgrade Route of the Southline Transmission Project. 

January 12, 2026 | 1:00 PM – 5:30 PM
January 13 – 16, 2026, as needed | 9:00 AM – 5:00 PM

DoubleTree by Hilton Tuscon -Reid Park
445 South Alvernon Way, Tucson, AZ, 85711