(30 Oct 2021, 3:43 pm)IRHardy wrote It was two Freight Operating Companies: Freightliner & Direct Rail Services, the FOCs pay as they use the electricity from Network Rail whereas the Passenger TOCs don't. The FOCs do not always operate all the services that are in the Working Timetable so they don't want to have a standing charge, whereas the TOCs (well pre-COVID) pretty much operated all the services that they planned to so the charges were not wasted.
That's them. I hadn't heard the full tale or seen the full story at the time, but there's plenty online about it including this piece. https://www.railjournal.com/fleet/rising...-traction/