The Environmental Protection Agency has proposed requiring new power plants to implement carbon capture and sequestration technology as part of an effort to limit emissions. However, such rules won't apply to existing power plants, which will receive a different set of rules in 2014 that could be left to states to enforce. CCS "is not seen, at least at this stage, as an add-on that could be used to put on an existing conventional coal facility. In those applications, it doesn't seem that it's appropriate at this stage," said EPA Administrator Gina McCarthy.

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