Sixteen states will have tougher carbon dioxide reduction targets than they originally planned for when President Barack Obama first proposed his climate change rule last year.
Obama presented his final plan Monday, which would reduce emissions 32 percent below 2005 levels by 2030.
Wyoming Gov. Matt Mead said the regulations exceed the government’s authority.
The individual states’ targets have changed since the proposal was released in June 2014. Some states are facing Targets have been loosened for 31 states, but the stricter goals for the others make the plan more ambitious than originally proposed.
Janet McCabe of the Environmental Protection Agency says the changes are due to less expensive renewable energy resources and the ability of states to access clean power from their neighbors.