I don't know either, I'd expect it to be either significantly more expensive, either have availability issues, since wind and sun are not 100% reliable, but I don't know how would that be implemented.
Most of these 100% renewable providers rely at least partially on hydropower, but just the one I linked seems to concentrate on wind and sun which looks indeed "risky". It's however probably not locally produced, I've read they are "US-produced" so they can buy it from other coastal areas or inland areas convenient for solar energy.
When it's just one region, it's no big deal, if it's a global trend, that's a problem. If Bitcoin's hashrate shrinks and gets concentrated in just a few countries, that's not good, because the risk of a large-scale attack on the network will become higher.
Hashrate probably will not shrink (if the price does not crash hard). Even the complete China mining ban has only affected the hashrate temporarily. Concentration would be indeed a problem, but first - we lived with that from 2013 to 2021 approximately when almost all mining power was concentrated in China, and second, a concentration would happen probably gradually as not all countries will decide this issue at the same time. And once renewables see another price fall the whole thing will be a non-issue; even those allowing "green" Bitcoin mining will be considered bitcoin-friendly (as I expect there are more countries that unfortunately could follow China's example to ban mining completely, which again, would be much worse than the New York model).
Also, function is not everything. If Bitcoin gets restricted or banned by influential countries, it will become far less attractive as a store of value.
This would be the case if there are normatives like the one which was proposed in the EU. If that proposal succeeded, PoW currencies would not be officially tradeable anymore on centralized exchanges, only P2P, and no professional services (e.g. wallet, trading services) could be offered by EU companies. Such a law would indeed be a big setback for Bitcoin. But a "green mining restriction" would only have an effect on miners; a slightly lower hashrate is not a problem at all.
I would even argue that - like @n0ne wrote - this is an indication politics see that Bitcoin is here to stay. If many countries followed the "green mining policy" and miners would find ways to be compliant instead of searching for another country with cheap dirty energy, then I believe this could be insanely bullish for Bitcoin - because the probability of one of the main threats to its utility as "store of value" (a PoW ban or Bitcoin ban due to "ecological concerns") would be dramatically decreasing.
There is some truth in what you are saying, but only bitcoin miners are being attacked and banned, other industries are fine [...] I believe this ESG thing is more about control than about environmental. Conveniently, POS coins (which is not so resilient and the decentralization is questionable) are just fine.
I believe there are different interests behind these proposals. A part may be indeed "anti-bitcoiners" who see decentralization as a threat. Others may even believe that PoS is indeed "superior" to PoW because they don't know - or don't understand - the Nothing-at-stake problem (which is often described in a very superficial way on websites and guides).
But my point is that if these laws were successful and miners shift to renewables, the whole argument would collapse. The only one they'd have left is the "money laundering" one and this can also be debunked pretty easily as I wrote in the post from today morning.