Illinois is ahead of the game when it comes to emissions standards. National lawmakers are coming close to finalizing a mercury emissions rule for coal-fired power plants, but Illinois already has rules in place aimed at the reduction of those pollutants.
A spokesperson for the states Environmental Protection Agency says Illinois plants have been required to address cleaning up emissions since 2007. State law requires all 23 of Illinois' coal-fired power plants will have to reduce mercury emissions by 90 percent by 2015. More than 90-percent of the plants have already met their goal.