Transition Cycle 1 of New Interconnection Process Begins Jan. 22


Transition Cycle 1 of PJM’s reformed interconnection process officially starts Jan. 22 when PJM will begin performing System Impact Studies on 308 projects representing 46,000 MW of new, mostly renewable, generation.

Projects that were classified as Transition Cycle 1 (TC1) from the recent Transition Sorting Retool analysis will be analyzed using a cluster-based study approach.

After the Phase 1 System Impact Study is completed, PJM will post results to a new webpage that will be dedicated to Transition Cycle projects. PJM also will provide updates on study progress at the monthly public meetings of the Interconnection Process Subcommittee.

TC1 projects are expected to clear PJM’s study process and be ready for construction by mid-2025.

In addition to Transition Cycle 1 projects, 308 projects totaling 26,000 MW qualified for an Expedited Process, or “Fast Lane,” with final documentation to be issued throughout 2024.

PJM anticipates posting the study cases for those projects the week of Jan. 22. They will be updated in sequential queue order.

PJM will make periodic announcements to stakeholders as the cases and files for Expedited Process projects are available and posted on

PJM has posted a Frequently Asked Questions (PDF) document to address developers’ questions about the project re-sort.

At the end of 2023, about 40,000 MW of projects that had completed the PJM study process had yet to move through construction due to issues including siting, supply chain and financing.

PJM’s new interconnection process was implemented in July 2023, with 734 projects eligible to be evaluated in the first step. Of those, 118 either dropped out of the process or did not post sufficient readiness requirements by the due date, clearing the queue of projects that were less certain to be developed but still requiring the same time and resources from PJM.

PJM’s interconnection process reform, widely supported by stakeholders, was approved by the Federal Energy Regulatory Commission in November 2022. The reforms, devised in collaboration with stakeholders, provide an efficient and timely process for handling New Service Requests by, among other changes, transitioning from a “first-come, first-served” queue approach to a “first-ready, first-served” cycle approach.

The new process also improves project cost certainty for Network Upgrades and significantly enhances the overall process by which new and upgraded generation resources are studied and introduced onto the electrical grid in 13 states and the District of Columbia.

PJM’s transition to its new interconnection process sets the stage for more than 260,000 MW of mostly renewable projects to be studied over the next three years.