The Century Aluminum Smelters in Hawesville and Sebree decided to terminate their electric contract with Big Rivers.
They say the plants will reopen again, but they're not sure when. Big Rivers sent out notices to about 420 people, but expect the number of layoffs to be around 165.
Big Rivers CEO Mark Bailey is confident this is only a temporary situation, but says more still needs to be done.
"We're facing some difficult decisions and actions here with these warn notices, but we've tried to find the outcome that's best for the entire area recognizing there was no ideal outcome," Bailey said.
With the loss of the two plants, Big Rivers customers can expect a rate increase of about $25 per month by April 2015, unless the company can find another source of revenue.
The company says the Wilson Plant will shut down February 1 and expect the Coleman Plant to shut down sometime in May.
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