Western Interconnect

This is a 35-mile, single-circuit 345-kV merchant transmission line connecting Public Service Co. of New Mexico’s Blackwater substation to a new 345-kV switching station located northeast of Clovis in Curry County, New Mexico. The normal transfer capacity of the line will be 1,100 MW. Western Interconnect was formed by Tres Amigas LLC (TA) and renewable energy company Pattern Energy Group LP to develop, finance, construct, own and operate the Western Interconnect transmission line. According to THUB calculations, the project has an estimated cost of $84m.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Tres Amigas LLC 35 345 NM NM 2018
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
84 Planned Blackwater Clovis Substation
Interstate Build Start NERC ISO/RTO Country Project Partners
WECC US Pattern Energy Group LP