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Western Area Power Administration

Open Access Transmission Tariff (OATT) Documents

Last Update: May 18, 2016, Updates to WAPA OATT Revision Filings / FERC Orders listings.

Recent Previous Updates:
September 5, 2013, Updates to EIS and EA Environmental Review Agreement Templates.
May 13, 2013, Updates include posting of OATT files associated with 4/12/13 OATT Revision Filing.

DISCLAIMER: Western's Open Access Transmission Tariff (OATT) is filed with the Federal Energy Regulatory Commission. Western's filings and the Commission orders establish the rates, terms and conditions of service.  These documents are prepared for the convenience of its customers and any conflicts between these documents and the version filed shall be resolved in favor of the version filed.

FERC provides a tariff viewer to help the public review tariff provisions electronically at the following URL: http://etariff.ferc.gov/TariffList.aspx.