grundleborg

It's a tariff called Agile Octopus: https://octopus.energy/agile/

The Isle of Wight uses retired former London Underground trains, which has given rise to rather wonderful instances like this: http://www.islandecho.co.uk/news/steam-rescue-stranded-islan...

This problem is an active area of academic research in the transport operations/planning field. It's generally known as "concentration and overreaction".

A classic example would be if a road is severely congested, and satnavs started advising drivers to take an alternative, smaller road, if too many people get the same advice that road will then end up even more congested and delay the people who followed the advice to change routes even more.

http://www.jstor.org/stable/42747332?seq=1#page_scan_tab_con... is a good starting point if you are interested in reading more about this area.