In a mature market you'd expect miners to disproportionately be creating their own electricity, as that's an example of an edge they'd need to make mining profitable.
Discussion
I live in the country the New York Times titled to have the world's most stupid energy policy. Even without special miner taxes, electricity is too expensive to run a miner effectively.
So yeah, only way is to use self produced (off-grid) electricity. It works but needs some investment in the beginning.
If vacuum balloons could be constructed and done at a low enough cost per lift capacity, it might enable very low cost airborne wind energy since wind power grows with the cube of speed. It might then make sense to mine on-balloon depending on the weight of conductor cable you would need to bring down power. Plenty of cold air flow.
I'm curious of the details (haven't read the budget proposal yet). It does seem inevitable that mining and energy production are on a path to meet. A miner that removes the existing energy producer's profit margin becomes more profitable. A producer that can enhance it's ROI on intermittent renewables would have a competative advantage over non-mining producers.