Interestingly, just as green finance and investments are beginning to take off in a huge way (+£100bn in green bonds issued this year and growing fast), Bitcoin comes along and starts consuming energy at this kind of rate. I hadn't understood this issue.

What will be the limiting factor for the massively rising price of bitcoin - the bubble just bursts commercially or the green lobby gets behind a campaign to stop it for its destructive effects on the planet, due to the sheer processing power needed?

Time will tell but I know where my money is going...