Power Plants will have to clean up their act, or maybe they won't.

From Marketplace, I'm Sabrie Benashore in for David Brunkachio.

The EPA is taking another crack at limiting emissions from power plants.

New rules would force plants to clean their emissions or shut down.

But whether the rules will actually come into force?

Unclear.

The Supreme Court recently struck down an earlier attempt.

Marketplace's Nova Safo has the details. The Supreme Court recently struck down an earlier attempt.

Marketplace's Nova Safo has the details.

Power plants are a major source of carbon emissions and the EPA says its new rules

would eliminate the same amount of carbon from the air as with the removal of hundreds of millions

of gasoline engine cars from the roads. Among the most significant changes are new emission standards

for fossil fuel-fired power plants, requiring them to remove 90% of the

planet-warming carbon dioxide they emit into the air.

Most would have about eight years to comply. The EPA made a point of stressing that it's not

telling the power sector how to achieve these goals. For some existing coal-fired

plants, this will likely mean shutting down.

Some industry groups criticized the rules and promised a legal challenge,

pointing to a Supreme Court decision two years ago that limited the EPA's ability to

set standards, which could have industry-wide implications.

I'm Nova Sopho for Marketplace.

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