"During President Obama’s speech tonight, he announced many different ways he would use the executive branch to pursue strong action on climate change. For longtime readers, this is old hat by now; I’ve been over how the EPA can use its pollution authority to cut back on carbon emissions several times. The policy framework hasn’t changed."
"Instead, this is a good signal that President Obama intends to finish what he has started. To a first approximation, climate change is about coal. The oldest and filthiest coal-fired power plants are already being retired, squeezed by cheap natural gas and ever-cheaper renewables on one side, and the EPA on the other. With a bit of luck, and if the president keeps up the pressure, by the time he hands off to his successor coal will be on a permanently downward trajectory."