On Thursday, July 12, 2018 at 3:04:30 PM UTC+1, wrote:
There was an article in the Evening Standard last night about the bus garage
near waterloo that has europes largest fleet of battery electric buses.
Apparently they had to install their own "generator". ....

I read that article too, according to this press release (link below) from 2016 the charging power comes from the grid. Not a local generator.

https://www.ukpowernetworks.co.uk/in...n.html#art-top