Partly because of "sustainability" component, partly because of general considerations.

A bit offtopic on the latter: the current "green energy" movement seems to be much more political than rational, onten pushing for the so-called "eco energy sources" without any regard on how these will integrate into the overall electric consumption balance. For example, one of the crucial elements of last-year Texas energy crisis was over-reliance on the renewable energy sources (solar and wind) while decommissioning the ecology-unfriendly coal and gas plants which served as balancing reserves, so at the moment of partial power outage due to freezes the rest of electric grid couldn't refill in time, which caused a cascade effect. It wasn't the only cause (cue the state economy on expensive gas supplies and historical electric network desync on a federal scale), but it can be considered as a "last straw" in that particular event.