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If you are considering the option of connecting a generator to a utility's electric distribution system, you must meet certain requirements before moving forward.
The Illinois Commerce Commission established Part 467 (Electric Interconnection of Distributed Generation Facilities) to establish standardized applications, review procedures, and agreements for customers wanting to connect generators of 10 MVA or greater in parallel to an electric utility's distribution system. This Agreement shall be used for all approved interconnection requests for distributed generation facilities that are greater than 10 MVA according to the procedures set forth in Part 467 of the Commission's rules (83 Ill. Adm. 467) (referred to as the Illinois Large Distributed Generation Interconnection Standard).
An application fee is charged for each interconnection application submitted. Applications received by ComEd without payment of the application fee will not be entered into the interconnection process for review by ComEd. An application fee must be submitted before the application can be processed.
ComEd shall apply the remaining $10,000.00 toward any subsequent studies related to this application.
A potential applicant may submit a formal written request form along with a non-refundable fee for a pre-application report on a proposed project at a specific site. ComEd will provide the pre-application data to the potential application within 20 business days after receipt of the completed pre-application report request form and payment of the $300 fee. The pre-application report produced by ComEd is non-binding and does not confer any rights; the potential applicant must file an application before it can interconnect with the ComEd's system. Your completed pre-application and associated fees (in the form of a check or money order, only; do not send cash) should be sent to the following address:
ComEdAttn: Interconnection Services Department2 Lincoln Center, 9th FloorOakbrook Terrace, IL 60181Email our Interconnection Services Team
All comments and questions should be directed to the interconnection single point of contact. Your completed application and associated fees (in the form of a check or money order, only; do not send cash) should be sent to the following address:
ComEdAttn: Interconnection Services DepartmentTwo Lincoln Center, 9th FloorOakbrook Terrace, IL 60181Email our Interconnection Service Department(630) 576-8158
This document provides guidance and technical standards applicable to Interconnection Customers planning to install and operate a generator interconnected to the ComEd distribution system.
Interconnection Guidelines (pdf)
The information on this webpage is applicable only to distributed generation (DG) facilities that (a) operate in parallel with the ComEd distribution system and (b) are not subject to the interconnection requirements of either the Federal Energy Regulatory Commission or the applicable Regional Transmission Organization (currently PJM Interconnection, LLC (PJM)). Inquiries concerning all other DG facilities should be directed to PJM. The PJM interconnection requirements, business rules, costs and interconnection queue are wholly separate from those referenced on this webpage. Visit the