President Obama announced on Saturday that he plans to move on new plans to curb climate change, and some of the first steps, which could be announced as soon as this week, include carbon emissions limits on existing power plants, Bloomberg reports.

Obama indicated that he would make a larger announcement on June 25 at Georgetown University but laid out his goals broadly via YouTube.

Coal plants have already suffered closures across the U.S. recently, thanks in part to cheap natural gas. As plants shutter, it will be interesting to see whether any new restrictions alter energy companies' calculus as they decide which plants to keep.