The Southern Cross

Transmission Project

Creating a new, high-voltage direct current (HVDC) transmission line to connect ERCOT with the Southeast U.S., delivering cost-effective wind power while providing both regions with improved reliability and economic benefit.

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About the Project

Pattern Energy Group LP (Pattern Development) is developing the Southern Cross Project (Project), a ±500 kilovolt (kV) high-voltage direct current (HVDC) transmission line with a base load capacity of 2,000 MW (delivered in either direction after losses) that will link abundant and cost-effective wind energy in Texas to the transmission grid and customers in the Southeast. The benefits of the Project to both regions include the production and utilization of additional renewable energy, economic development, regional power market economic benefit, and increased electrical reliability through providing access to the diverse generation resources in each region.


The proposed Southern Cross Project will consist of transmission facilities in Louisiana and Mississippi, including a HVDC converter station located in Northwest Louisiana, approximately 400 miles of HVDC transmission across Louisiana and Mississippi, and a HVDC converter station located in Northeast Mississippi. Associated with the Southern Cross Project is the Rusk to Panola Transmission Line Project (RPTL Project), a double-circuit 345-kilovolt (kV) transmission line in Texas sponsored by Garland Power & Light and Rusk Interconnection LLC. When completed, the RPTL Project will interconnect the Electric Reliability Council of Texas (ERCOT) transmission grid to the Southern Cross Project.

Click here to find out more about this associated project.

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