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Illinois Bulk Transmission Siting & Regulation(8-IL)

A bulk transmission developer may need to obtain a Certificate of Public Convenience and Necessity, from the Illinois Commerce Commission prior to constructing a high voltage electric service line. Illinois Public Utilities Act (220 I.L.C.S §§ 5 et seq.)

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Determine Which State and Federal Permits Apply

Use this overview flowchart and following steps to learn which federal and state permits apply to your projects.

Permitting at a Glance

Illinois Federal

Transmission Siting: Illinois does not have a state comprehensive siting process for transmission project development.
Preemptive Authority: The Illinois Commerce Commission has primary siting authority over public utilities siting transmission lines. Illinois Public Utilities Act (220 I.L.C.S §§ 5 et seq.), Illinois Regulations – 83 I.A.C. §§ 100 et seq., Public Utilities.
Regulated Entity Definition: A “public utility” includes “…every corporation, limited liability company, association, … partnership, or individual…that owns, controls, operates or manages... for public use, any plant, equipment or property used or to be used for or in connection with…the production, storage, transmission, sale, delivery or furnishing of...electricity.” 220 I.L.C.S § 5/3-105(a)-(a)(1).
Public Utility Certificate Threshold: Public utilities may need a Certificate of Public Convenience and Necessity from the Illinois Commerce Commission to construct any new plant, equipment, property, or facility. 220 I.L.C.S § 5/8-406.
Processing Timeframe: There is no statutorily defined timeframe for approval, except for projects that go through the expedited review process. The expedited review process must be complete within 150 days after the application is filed. 220 I.L.C.S § 5/8-406.1(g).