The ongoing workings of a complex and it's management is something for a solicitor to advise on I would say - but obviously the problem again is that no-one wants to do that and be left with the bill for the advice when nobody else thinks they should pay their share. I can only suggest you find out how other management companies deal with communal electricity bills and if their answer is easily, consider moving to one of them. You can't have a working complex (especially in season) without communal electricity and if that happens it will be a disaster for all owners there, so they need to take responsibility now.