On April 16, 2026, FERC accepted in part and rejected in part PJM Interconnection, L.L.C.’s (PJM) compliance filing proposing changes to PJM’s Open Access Transmission Tariff (Tariff). FERC accepted PJM’s clarification of procedures for using new generating facilities to serve Co-Located Load but rejected revisions to the definition of “Co-Located Load” and PJM’s incorporation of such definition in specific Tariff sections. FERC ordered PJM to submit a further compliance filing by May 18, 2026.

On December 18, 2025, FERC issued an order in a show cause proceeding, finding PJM’s Tariff provisions regarding Co-Located Load and Eligible Customers taking transmission service on behalf of Co-Located Load unjust and unreasonable (see December 22, 2025 WER Article). The December 18 Order directed PJM to revise its Tariff to clarify how Interconnection Customers can utilize Provisional Interconnection Service, request interconnection service below nameplate capacity, accelerate the interconnection process in specific circumstances, and utilize Surplus Interconnection Service to connect generation that intends to serve Co-Located Load.

On January 20, 2026, PJM submitted the required compliance filing. First, PJM proposed to add a definition of “Co-Located Load” that matches other terms in the Tariff and change the term “Point of Interconnection” within the definition of Co-Located Load to instead be “Point of Change in Ownership.” Second, PJM revised the requirements for Generation Interconnection Requests to require developers to state the level of requested Interconnection Service. Third, PJM proposed revisions to clarify that certain service requests for new Generating Facilities, or increases in capacity for existing Generating Facilities, to serve Co-Located Load are eligible for acceleration of specific components of the interconnection process. Fourth, PJM clarified that Surplus Interconnection Service is available for Surplus Project Developers who aim to have their new Generating Facilities serve Co-Located Load. Finally, PJM proposed Tariff revisions to allow new Generating Facilities to use Provisional Interconnection Service to serve Co-Located Load. PJM indicated it would defer proposing changes to the Behind the Meter Generation and Co-Located Load application requirements until a later compliance filing.

FERC accepted in part and rejected in part the compliance filing. FERC accepted PJM’s proposed revisions clarifying Interconnection Customers’ ability to use new Generating Facilities to serve Co-Located Load and required PJM to file the accepted Tariff text in a further compliance filing.

FERC rejected components of PJM’s definition of “Co-Located Load” in specific sections of the Tariff, finding PJM should utilize the term “Point of Interconnection,” instead of “Point of Change in Ownership,” per the December 18 Order. FERC also rejected PJM’s proposal to incorporate “Co-Located Load” into Tariff sections on Behind the Meter Generation as outside the scope of the proceeding.

FERC directed PJM, in a further compliance filing, to: (1) revise the definition of “Co-Located Load” to replace “Point of Change in Ownership” with “Point of Interconnection”; (2) remove “Co-Located Load” from provisions on Behind the Meter Generation; (3) incorporate the revised definition of “Provisional Interconnection Service” in certain components of the Tariff; and (4) file FERC-accepted Tariff language.

FERC’s Order, issued in Docket No. ER26-1088-000, is available here.