ATC granted CPCN for Illinois portion of Pleasant Prairie-Zion 345-kV line

The Illinois Commerce Commission (ICC) on April 10 approved American Transmission Company’s (ATC) application for a certificate of convenience and necessity (CPCN) for a portion of a proposed line that would connect Illinois and Wisconsin.

The Pleasant Prairie-Zion 345-kV line would extend 5.3 miles from the Pleasant Prairie Substation in Pleasant Prairie, Wis., to the Zion Energy Center Substation in Zion, Ill., an ATC spokesperson told TransmissionHub on April 12.

ATC said the $31m project is needed to help relieve transmission system congestion throughout the region and enable the most efficient generators to supply power to the energy market. The utility’s project website said the line will also allow utilities to buy and sell power when it’s economic to do so.

The ICC granted its approval for the 1.8 miles of the line that will be sited in Illinois.

ATC’s application for the Wisconsin portion of the line is still being evaluated by the Public Service Commission of Wisconsin (PSCW), which is considering two route options for the Wisconsin portion of the line, the spokesperson said.

The preferred route for the Wisconsin portion would follow an existing rail route, while the alternative alignment would follow a state highway, the spokesperson said.

ATC expects to receive a decision by the PSCW by this fall.