Interim Open-Access Information System Site

Making an Interconnection Request

The SunZia Transmission System is undergoing advanced design activities work, estimated to be complete in Q4 2024. When an entity requests a new interconnection to the Transmission System, that entity must submit a request in writing via email. Such a request should be sent to:

Regulatory Compliance 
1088 Sansome Street
San Francisco, CA 94111
Phone: (713) 308-4200

[email protected]


Large Generation Interconnection requests (greater than 20 MW) should follow the procedures outlined under Attachment M of the OATT


Small Generation Interconnection requests (facilities no larger than 20 MW) should follow the procedures outlined under Attachment N of the OATT

SunZia Transmission, LLC – Tariffs, Rate Schedules and Agreements