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Dominion has permanently shut down its 556 MW Kewaunee Power Station - a nuclear-generated electricity plant that has been in operation for almost four decades southeast of Green Bay on Lake Michigan.

Dominion announced last fall that it would close the station and decommission it because the company was unable to grow a Midwestern nuclear fleet to take advantages of economies of scale, and Kewaunee's power purchase agreements were ending at a time of projected low wholesale electricity prices in the region.

"This decision was based purely on economics. The dedicated employees have operated the station safely and well," said David Heacock, president of Dominion Nuclear and chief nuclear officer of Dominion. "We will keep our focus on safety as we transition the station toward decommissioning."

Operators began reducing power output at the station at 8 a.m. CDT on Tuesday and opened the electrical output circuit breakers shortly after 11 a.m. CDT, which removed the unit from the Midwest ISO transmission system.

Kewaunee went into service on June 16, 1974. Over its life, the power station generated about 148 million MWh of electricity.

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