In a move virtually no one saw coming, the United States Supreme Court ordered a stay of the Environmental Protection Agency's Clean Power Plan pending review by the DC Circuit court. The Clean Power Plan requires states to reduce greenhouse gas emissions by regulating emissions from electricity producers such as coal plants. The DC Circuit is hearing the case to decide on its constitutional validity.
While the constitutionality of the Clean Power Plan had been questioned and debated by observers, it is highly unusual for the Court to insert itself into a pending case of a lower court in this way. The DC Circuit had scheduled review of the CPP according to a timeline that would allow for a decision before any major action by the states, so few were expecting the Supreme Court to intervene and put a hold on the CPP in such urgent fashion. Here's Patrick Parenteau on how odd the order is:
This action is unprecedented in a number of ways. The majority made none of the findings typically required to obtain a stay. There is no analysis of the merits of any of petitioners’ claims. There is no showing that the rule threatens any immediate harm to petitioners, especially given the long lead times EPA has built into the process. There is no showing that the balance of hardships tips decidedly in favor of the petitioners, especially given the fact that most states are well into the process of developing implementation plans and those that do not want to submit a plan don’t have to. There is no showing that the stay is in the public interest, especially given the warnings from the scientific community that time is fast running out to avoid catastrophic consequences of climate disruption. Never before has the Court interjected itself in a case with such high stakes that hasn’t even been fully briefed and argued before the lower court.
This is what the Court's order looks like:
The order isn't a final decision invalidating the CPP, but it does create uncertainty for states who were developing plans to comply. And it suggests that the five justices in favor of the stay may eventually overturn the plan. Some have suggested the Court believes the EPA needs a more express authorization from Congress to implement such sweeping regulations. If that's the case, it will deal a severe blow to the United States' chances to meet the climate commitments we signed onto in the Paris Climate Agreement. Many states are leading the way on climate change mitigation, but the CPP was a key tool in requiring regulation in all states. At the very least, the order ensures there will be a lot of attention on the DC Circuit as it hears the case and renders its opinion.