83 Ill. Adm. Code 467.10
Scope
Section 467.10 Scope
The Illinois Large Distributed Energy Resources
Interconnection Standard applies to any distributed energy resources (DER)
facility operated in parallel with an electric public utility distribution
company in Illinois and whose nameplate capacity is greater than 10 megavolt amperes
(MVA) (a large DER facility), provided that the electric distribution system
facilities to which the DER facility is proposed to interconnect are not
subject to the jurisdiction or interconnection requirements of either the
Federal Energy Regulatory Commission (FERC) or the applicable Regional
Transmission Organization (RTO) (either Midwest Independent Transmission System
Operator, Inc. (MISO) or PJM Interconnection, LLC (PJM)).