Re: Haters gonna hate...
Killing Time here is the SMETS2 smart meter technical specs draft:
I would draw your attention to section 5.5.7:
"ESME shall be capable of operating in Credit Mode and Prepayment Mode and of being remotely switched from one mode to the other."
And just above it section 5.5.6 Load Limiting, which to my eye seems a particularly weasel worded section, that I take to mean they can set a power usage threshold that if you exceed it they switch you off for a bit, now I know traditional meters have this feature too but that is at about 60 or 80 Amps when your main fuse blows, I doubt they will be so generous with this load limiting feature.
Something along the lines of "of course if you want to draw more than 3KW you'll have to pay for our premium electricity service"