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EA-1853: Final Environmental Assessment

Perrin Ranch Wind Energy Interconnection Project

Perrin Ranch Wind submitted an interconnection request to Western in 2010 to interconnect the proposed project to the existing Moenkopi-Yavapai 500-kV transmission line. Western is responding to Perrin Ranch Wind’s application for interconnection. Western adopted an Open Access Transmission Tariff (Tariff) for its transmission system, which is generally consistent with the Federal Energy Regulatory Commission’s pro forma open access tariff. Under Western’s Tariff, procedures for new interconnections to the transmission system apply to all eligible customers, consistent with all Western requirements and subject to environmental review under NEPA. In responding to that request, Western applies the terms and conditions of its Tariff and Interconnection Guidelines.