Edison Electric Institute

Paul J. Everett / https://www.flickr.com/photos/paul_everett82/1680881189

Indiana is one of 26 states suing to block the Obama Administration's Clean Power Plan -- but a utility trade association is advising legislators to assume the rule will stand.

The Clean Power Plan requires states to cut carbon emissions by one-third in 14 years.

Karen Obenshain with the Edison Electric Institute says the wisdom of the plan may be questioned, but it appears to pass legal muster.