Yes, and the dissent spells that out clearly. An excerpt from the dissent:
> The majority says it is simply “not plausible” that Congress enabled EPA to regulate power plants’ emissions through generation shift- ing. Ante, at 31. But that is just what Congress did when it broadly authorized EPA in Section 111 to select the “best system of emission reduction” for power plants. §7411(a)(1). The “best system” full stop—no ifs, ands, or buts of any kind relevant here.
They were given broad power by congress explicitly. If congress had wanted them to reign in that power or not choose the best system, then they could pull it back at any time. They did not. The court decided that the previous congress was full of idiots and could not fathom future technologies for emission reduction and therefore is moot.
These literalist justices are of the mind that if it wasn’t explicitly written, then it’s not allowed. Generalist/broad swath language is to be ignored. Only specific instruction is to be interpreted.
Yet they decide other landmark cases with a newly invented test for "deeply rooted history and tradition", through which they can put on their highly subjective amateur historian hats to engineer a desired outcome.
> The majority says it is simply “not plausible” that Congress enabled EPA to regulate power plants’ emissions through generation shift- ing. Ante, at 31. But that is just what Congress did when it broadly authorized EPA in Section 111 to select the “best system of emission reduction” for power plants. §7411(a)(1). The “best system” full stop—no ifs, ands, or buts of any kind relevant here.
They were given broad power by congress explicitly. If congress had wanted them to reign in that power or not choose the best system, then they could pull it back at any time. They did not. The court decided that the previous congress was full of idiots and could not fathom future technologies for emission reduction and therefore is moot.