You need to have high peak usage at the start, they use this as baseline data.^ Interesting; how does it work?
e: oh, need to wait till November for details.
Then when they see the load shift you get paid per KwH you shift.
So if you already have low peak and want this, then need to artifically get your peak usage up at start.
Seems only two suppliers interested, need a smart meter, and it was some effort for me to find the octopus page, they not making it easy to find it on their site. Had to google specific words.
I couldnt find info if it requires a special tariff.