[MichaelVangard]

It’s relevant now. We don’t have ways to store days or weeks worth of the excess energy many renewable sources produce. When you have somewhere for that energy to go when it can’t otherwise be used, and you’re getting paid for it, you can subsidize the cost of producing a more robust infrastructure that eliminates or greatly reduces the need for traditional power plants that cause environmental harm.

[UncleMeat]

This depends on the "I can sell BTC for dollars" part. This isn't stable if the use case of BTC is just to spend extra power.