Nscale, the Nvidia-backed British AI unicorn, has discovered its flagship £2bn data centre in Essex won't get electricity from the National Grid in time for opening — despite having planning permission and a 90MW connection approved just six days ago. Microsoft had signed on as anchor customer. Now Nscale is hunting for off-grid, gas-powered alternatives. The project was meant to be a crown jewel in the government's push to make Britain a "global AI infrastructure...