Thanks for the in depth answer - pretty much what I suspected. I think this sort of thing only even starts to work when you have a critical mass of people on th

Thanks for the in depth answer - pretty much what I suspected. I think this sort of thing only even starts to work when you have a critical mass of people on this kind of tarriff (and more than that, willing to pay more and/or switch supplier for it). I wonder what actual proportion of the UK market is currently on a "100% renewable" plan.