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Can Units 7, 8 and 8A be retired immediately?

The retirement of Units 7, 8, and 8A has been deferred. Due to shortages of dispatchable generation in the MISO footprint, Units 7 and 8 will remain available through May 2023. After May 2023, Units 7 and 8 will be available as “peaking units”, running only when significant grid conditions exist. The run time after May 2023 is expected to be minimal.


MPW’s development of a new 161kV transmission line to the north of Muscatine will provide additional voltage support so that the transition of Units 7 and 8 to peaking units and eventual retirement will not negatively impact local energy reliability. This new transmission line, dubbed “Line 106” will go into service Summer 2022.

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