COLUMBUS, Ohio (AP) -- Eight aging electric generating plants powered by coal in Ohio are facing uncertain futures.

They could be demolished or sold as utilities try to meet clear air standards.

The coal-fired generators lacking sufficient pollution equipment are run by American Electric Power, Duke Energy and FirstEnergy.

There are 22 coal-fired power plants in Ohio, including the eight headed for retirement.

According to The Columbus Dispatch (bit.ly/LqcWrs) the shutdowns will eliminate toxic compounds, including mercury, along with pollutants that cause smog and soot.

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Information from: The Columbus Dispatch, http://www.dispatch.com