TCA.
The WT2 £25 reservation voucher is turned into investment upon opening window of purchase & further "watts"
Because, as Nowrty says, there is interest but also fade out amongst investors (as is any market) who initially expressed / reserved a £25 spot, the site allows you to purchase up to 120% of your annual electricity energy use as per the ripple slider & estimator, IF, there is space on the WT2 investment bus over time it takes to fill, not just the initial few days advance notice any pre-booked reservation holders have.
So buying an affordable "cushion" of watts works for most, with (as advertised) if full, anyone who wishes to sell off their watts down the line, however, more (as per thread) locations for ripple WT's in progress so spreading to catch other areas of wind when another may be occasionally idling also helps, & allows long term planning (precisely what some of the WT1 investors are intent on doing to spread payments, hedge gets on watts returns & the minimization of catastrophic failure (insured WT) which whilst remote ..sh1t happens.
Some larger businesses may invest to green up their operations, also WT2 is better known on the back of WT1 investment as proof of viability.
(& for that reason I'd call this one "Huxley"
This is going to be an ongoing model that gathers pace, credits amongst multiple WT's will align I'm certain for those holding multiple location watts, as has also been stated investors reaching the 120% home production figures will be unable to buy further so it serves as wide & fairly as possible (that will doubtless apply to commercial firms who invest too)