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If you are considering the option of connecting a generator to ComEd's electric transmission system, you must meet certain facility connection and performance requirements that are established to avoid adverse impacts on reliability. In general, this section applies to larger generators (e.g., Commercial Wind Farms, Biomass or Solar Projects).
ComEd is a member of the PJM Interconnection. PJM Interconnection is a regional transmission organization (RTO) that coordinates the movement of wholesale electricity in all or parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia. The PJM Manual 14 series address the interconnection process, planning study requirements, and facility connection requirements specific to the PJM transmission system. The PJM Manuals can be accessed via the PJM website. Interconnection Requestors should review the PJM Manual for specific PJM requirements.
ComEd-specific interconnection guidelines and requirements may be found here.
This document is intended to highlight the ComEd and PECO requirements and is not intended to fully replicate or to replace the PJM documentation. In addition the PJM OATT provides the Interconnection Services Agreement (ISA) that is utilized by ComEd/PECO and that includes several of the interconnection requirements. Normally all interconnection requests are directed to PJM. PJM Manuals and OATT are posted publicly on the