Hybrid Ferry in Scotland has battery issues, now runs exclusively on diesel. 

SO they spent all that extra money to make the thing be as fast and to carry as much as a diesel powered ship…then the battery broke and now it runs really slowly, with almost no power reserve for emergencies, exclusively on diesel because the battery. electric side of the system has failed and cannot be repaired easily or cheaply.

Plus, of course, it didn’t save any energy or reduce carbopn output even when the system was fully functional.

Piss poor engineering, executed way too fast, to feed the Green Gods” and to follow a fashion….with lots of money spent for no gain…..Pretty much the ‘Green” movement in a nutshell.