Planning the enhancement and expansion of transmission capability on a regional basis is one of the primary functions of regional transmission organizations. PJM implements this function pursuant to the Regional Transmission Expansion Planning (RTEP) Protocol set forth in Schedule 6 of the PJM Operating Agreement (PDF). A key part of this regional planning protocol is the evaluation of both generation interconnection and merchant transmission interconnection requests, the procedures for which are codified under Part IV of the PJM Open Access Transmission Tariff (PDF).

PJM annually develops a Regional Transmission Expansion Plan (RTEP) to meet system enhancement requirements for firm transmission service, load growth, interconnection requests and other system enhancement drivers. To establish a starting point for development of an RTEP, PJM performs a ”baseline” analysis of system adequacy and security. These baseline analyses and the expansion plans they yield serve as the base system for conducting feasibility studies for all proposed generation and/or merchant transmission facility interconnection projects and subsequent System Impact Studies for those projects which decide to go forward. The enhancement recommendations revealed by these System Impact Studies become part of the RTEP approved by the PJM Board of Managers and published in the posted RTEP Report.

This section of the Web site is intended to facilitate access to the current RTEP and baseline reports.