At a time when people are afraid to open their electricity bills, the news that the ESB made €390 million in profit in the first six months has not gone down well. That the ESB is 95 per cent owned by the Irish government makes the situation even more delicate. There is an impression that an arm of the state is fleecing the citizens. What really has gone on in the ESB this year? Who has benefited, who has lost out, and what needs to change? Four businesses in one The electricity system has three main components: power plants, transmission…