About the NATF

The North American Transmission Forum (NATF) is built on the principle that the open and candid exchange of information among its members is the key to improving the reliability of the transmission systems in the U.S. and Canada.

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December 12, 2018

The NATF has posted version 3.0 of the “NATF TPL-001-4 Reference Document” to our public website for the benefit of the industry. 

The document provides guidance regarding the use of consistent, industry-wide approaches to certain topics in NERC standard TPL-001-4.  The goal of sharing this information externally is to support responsible Transmission Planners and Planning Coordinators with the various transmission system planning analyses as called for under TPL-001-4, thus enhancing the reliable planning and operation of the entire Bulk Electric System.