[rlewkov]

An attorney friend of mine summarized it by saying that the Supreme Court said it's OK for the EPA to dictate particular emission levels for power plants but not OK to require a plant to change it's method of power generation.

[mc32]

Wow... if this is the actual impact, that seems... fair. Yeah, you can regulate pollution levels but not go a step further and regulate the inputs that create pollution, unless that power is vested in you by Congress.

[jvanderbot]

So CO2=0 would be legit? That seems against the spirit / motivation of the court at present moment. My third-hand impression was that they ruled that regulating CO2 at all was outside their responsibilities.

[nitsky]

The deal is that Congress can delegate administrative authority to agencies like the EPA, but answers to "major questions" must be backed up by legislation. Where is the line? Wherever the Supreme Court decides it is.