Pattern Energy buys SunZia Transmission project

Pattern Energy

Pattern Energy has acquired the SunZia Transmission project from SouthWestern Power Group, a subsidiary of MMR Group.

SunZia Transmission consists of a 550-mile bi-directional ± 525 kV high-voltage direct current (HVDC) transmission line between central New Mexico and south-central Arizona, with the capacity to transport up to 3,000 MW of clean, renewable energy.

SunZia Transmission previously awarded the 3,000 MW of capacity on the transmission line to Pattern Energy. Pattern Energy is developing the SunZia Wind project, a 3,000+ MW facility in New Mexico, which will utilize the SunZia transmission line to provide renewable electricity to power the needs of 2.5 million Americans annually.

SouthWestern Power Group will maintain ownership of a second 500 kV high voltage-alternating current (HVAC) transmission line, El Rio Sol Transmission.

SunZia Transmission and SunZia Wind together comprise the largest renewable energy infrastructure project in U.S. history with a total investment of over $8 billion. Both projects are privately funded and will deliver widespread economic benefits across New Mexico and Arizona.

SunZia Transmission and Pattern Energy have partnered with the New Mexico Renewable Energy Transmission Authority (RETA) on the development of the transmission project in New Mexico. Pattern Energy expects to begin full construction of the SunZia Transmission and SunZia Wind projects in 2023 with the completion of construction and start of operations for SunZia Transmission expected in 2025, and SunZia Wind in early 2026.

“This revolutionary transmission line will be the conduit for the largest wind project in U.S. history, our 3,000+ MW SunZia Wind facility,” Mike Garland, CEO of Pattern Energy.

The SunZia Transmission and SunZia Wind projects will create more than 2,000 construction jobs during peak construction. Once operational, up to 150 permanent staff will operate and maintain the projects.

Pattern Energy has expertise in developing complex transmission projects. In December 2021, together with RETA, Pattern Energy completed and sold to Public Service Company of New Mexico (PNM) the Western Spirit Transmission line, a 155-mile 345 kV transmission line that is now delivering wind power from Pattern’s Western Spirit Wind facilities in central New Mexico to the electric grid managed by PNM near Albuquerque.

Pattern Energy is currently developing additional interstate transmission projects including the Southern Spirit Transmission project, an advanced-stage ± 525kV, 2,000 MW High-Voltage Direct Current (HVDC) bi-directional transmission line that will connect ERCOT in Texas to the southeast market.