Here in Yorkshire15 Dec 2010 11:24
According to a field engineer who works for gas networks, yeah I know, but he's an electrical engineer,... he says supply is set at 230 volts, not 240 volts as the Vphase model is based on - so the savings at least in Yorkshire, are not as great as are implied. Hopefully we can get to 4p sometime in the future and we'll all be happy.