Bryan Texas Utilities and Texas-New Mexico Power Company are seeking public input on a proposed high-voltage transmission line that would connect Robertson County to the planned RELLIS Substation in Brazos County as electricity demand continues to grow across the region.
The proposed TNP1-RELLIS 345-kilovolt transmission line would run about 40 miles from TNMP’s existing TNP1 Switching Station in Robertson County to BTU’s planned RELLIS Substation. The utilities hosted three come-and-go public meetings in early August, including two in Bryan, to gather feedback before submitting a routing application to state regulators.
The overview
According to project information, the transmission line is intended to strengthen the electric grid and improve long-term reliability as population and energy demand increase in the Brazos Valley and surrounding areas.
Officials said the project was recommended by the Electric Reliability Council of Texas, or ERCOT, after an independent review identified reliability needs in the area. The companies said the project is designed to add transmission capacity and support future growth.
About the project
Officials emphasized a final route has not been selected.
TNMP, BTU and consultant HDR are evaluating multiple preliminary route segments while collecting feedback from property owners and the public. After the comment period closes, the companies will develop route alternatives to include in a Certificate of Convenience and Necessity application submitted to the Public Utility Commission of Texas.
The PUCT will make the final decision on the transmission line’s route after reviewing the application.
The proposed transmission line would use steel monopoles about 130 to 150 feet tall within a right of way approximately 120 feet wide.
Property owners whose land lies within 510 feet of the preliminary route segments were invited to attend the public meetings.
What’s next?
Public comments on the proposed route are being accepted through Aug. 21 on the TNP1 website or via email. The TNP1 website also includes an extensive list of frequently asked questions and more information.
TNMP and BTU expect to file a Certificate of Convenience and Necessity application with the PUCT in February 2027. State regulators have up to 180 days to review the application and determine whether to approve, modify or deny the proposal.
If approved, right-of-way acquisition and final design would follow before construction begins. The utilities anticipate construction starting in 2029, with the transmission line expected to be completed in 2030.
