[danbruc]

[...] consumption is still below 0.5% or so (so really not that big of a deal percentage wise).

What? Look at all the things we do with electricity. Spoiler, there are quite a few. Spending half a percent on crypto currencies is a lot.

As long as the source is green, which it already is fo a huge chunk of the energy behind cryptos, and as long as it is not messing with the availability for the demand in the grid for other industries/consumers, then who cares how much it consumes?

Even if the energy is green, it could be used for better purposes. [1]

[1] Yes, I have heard about the green energy used in remote places where there is no other demand. If this is the dominant source of electricity, then calculate as much hashes as you want.

[ea550ff70a]

You are missing on the incentives side of the equation. If I'm a miner and the green energy source is cheaper, I will get that infrastructure built for it. This could also help to recoup investment, for someone who doesn't see mining as its main goal, in the case where renewable infrastructure is not cost effective for a specific region but could help with reducing overall carbon emissions.