Historic Renewable Energy Project Reaches Full Operation
Pattern Energy Group (Pattern Energy), a leader in clean energy and transmission infrastructure, has announced that the SunZia project, recognized as the largest renewable energy infrastructure project in U.S. history, has reached full operational status. The SunZia project is now capable of generating and delivering more electricity than the Hoover Dam while providing affordable and reliable energy to customers throughout the western United States.
Commenting on the milestone, Hunter Armistead, CEO of Pattern Energy, said, “SunZia proves that we can still build the consequential infrastructure this country needs.”
“We did this the right way, we did it on time and on budget – in genuine partnership with the local communities and landowners who trusted us, with the environmental stewardship this unique landscape deserves, and with the determination to see something through that many thought was too big and too complex to finish,” he added.
Adressing Rising Power Needs
The SunZia project consists of an approximately 3,650-megawatt (MW) wind project and a 550-mile high-voltage direct current (HVDC) transmission line. Together, these assets are generating and delivering affordable, American-made energy from New Mexico into Arizona and onward to customers connected to the western grid. Operating at full capacity, the facility can supply enough electricity to serve approximately one million American homes each year. The SunZia project is designed to address growing energy demand through new interregional transmission infrastructure capable of moving reliable and affordable power across long distances. In doing so, it tackles a key challenge facing the energy sector by combining large-scale energy generation with the transmission systems required to deliver that energy where it is needed.
Advanced Transmission Technology at Project Core
A central component of the SunZia project is its HVDC transmission network, which is engineered to transport significant volumes of electricity efficiently over extended distances. Converter stations located at each end of the transmission line convert electricity for transmission and then convert it back for use on the grid. Through this system, SunZia is deploying one of the first major HVDC systems constructed in the United States in a generation, creating advanced infrastructure intended to support large-scale power delivery.
Highlighting the broader significance of the development, Elliot Mainzer, President and CEO of the California Independent System Operator (ISO), said, “Projects of this scale help deliver energy reliably to areas of rising demand, improve the movement of power across states and support a more resilient, flexible and affordable electric system. SunZia represents the kind of long-term infrastructure investment needed to serve customers today and prepare the grid for the future.”
Economic Benefits and Community Investment
Construction activities on the SunZia project commenced in September 2023. At peak construction, the development supported more than 2,000 quality jobs. In addition, more than 100 permanent operations positions will be created across New Mexico and Arizona. The project is expected to invest over $20 billion in communities within those states, including $1.3 billion in direct payments to local governments, schools, counties and private landowners during the first 30 years of operation.
According to Pattern Energy, the fully contracted project progressed through extensive development, permitting, financing, construction and community engagement processes, requiring coordination among private companies, local governments, state and federal agencies, landowners and energy customers.
