Jan. 21 — Biden ran his campaign in part on bringing the U.S. electric grid to 100% carbon-free electricity by 2035, and decarbonizing the entire economy by mid-century. Though policy observers say that goal may be difficult to mandate, even with a majority Democratic Senate and House, Biden’s first day in office was marked by immediate action on climate and clean energy that will likely mark a very different executive branch than that of his predecessor.

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