PJM’s Regional Transmission Expansion Plan (RTEP) identifies transmission system additions and improvements needed to keep electricity flowing to 61 million people throughout 13 states and the District of Columbia. Studies are conducted that test the transmission system against mandatory national standards and PJM regional standards. These studies look 15 years into the future to identify transmission overloads, voltage limitations and other reliability standards violations. PJM then develops transmission plans in collaboration with Transmission Owners to resolve violations that could otherwise lead to overloads and black-outs. This process culminates in one recommended plan – one RTEP – for the entire PJM footprint that is subsequently submitted to PJM’s independent governing Board for consideration and approval.


Interconnection Queues:
Active and withdrawn generation interconnection requests
Active and withdrawn merchant transmission requests
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System Map: This map includes many existing views with layers and filters to show greater detail, such as substations, transmission facilities, transmission zones. The details on the maps are drawn from live data. The PJM System Map shows the location of all queued interconnection requests and enables filtering capability of other queue information.
RTEP Construction Status:  View a full listing of all planned upgrades and their status.
RTEP Development : Planning the enhancement and expansion of transmission capability on a regional basis.
Planning Criteria:  View standards by which PJM identifies needed upgrades.
Expansion Planning Process:  PJM’s RTEP Process preserves the reliability of PJM’s interstate transmission system to ensure that power continues to flow reliably to customers and to ensure robust, competitive power markets.

Stakeholder Groups

Transmission Owners:  Transmission Owners (TOs) and PJM work together to facilitate the coordination of planning and operation of Transmission Facilities within the PJM Region.
Regulators:  PJM’s region-wide RTEP process applies planning and reliability criteria over a fifteen-year horizon to identify transmission constraints and upgrades to alleviate them.
Interconnection / Upgrade Requests: PJM administers the process for the interconnection of all new generation and merchant transmission facilities within the PJM footprint.