The SunZia Project consists of two bi-directional extra-high voltage electric transmission lines and substations that will transport energy from Arizona and New Mexico to customers and markets across the Desert Southwest. SunZia’s total transmission capacity has an approved rating from the Western Electricity Coordinating Council of 3,000 megawatts for two single-circuit 500 kV AC lines. SunZia is solely an electric transmission project, and is not a power generation facility. Click here for a more detailed description of the project.
The Bureau of Land Management (BLM), along with fourteen cooperating agencies, led the effort to comply with the National Environmental Policy Act (NEPA).
On January 23, 2015, the BLM issued a Record of Decision (ROD) that approved SunZia’s application for a right-of-way across federally owned property. The ROD concluded the six and half year effort to comply with NEPA.
SunZia is anticipated to be in-service by 2021.
Benefits of the SunZia Southwest Transmission Project:
Provides an option to develop power generation resources, including renewable resources, located in Arizona and New Mexico that currently do not have nearby access to transmission service; and
Delivers these generation resources to customers in western markets; and
Increases reliability of the existing extra-high voltage transmission system in southern Arizona and southern New Mexico; and
Greatly improves power transfer across the Desert Southwest electricity grid; and
Generates jobs and revenues for state and local governments through property, state and local taxes paid by the SunZia Project and generation projects that will utilize SunZia’s new transmission capacity. Estimates on these economic benefits are detailed in an Economic Impact Assessment that was prepared by the University of Arizona and New Mexico State University.
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