Until all[1] electricity is generated from green sources then any PoW style mining is contributing to increased electricity generation from non-green sources.
If the PoW style mining didn't happen then there would be less of a demand for electricity and so there would be less of a shortfall that has to be made up from non-green sources.
Given national/international distribution constraints.
Until all[1] electricity is generated from green sources then any PoW style mining is contributing to increased electricity generation from non-green sources.
If the PoW style mining didn't happen then there would be less of a demand for electricity and so there would be less of a shortfall that has to be made up from non-green sources.