Variable tarriffs
In theory the fuel cost could be varied according to demand, which would level off consumption etc.
In reality we only need to look at how Economy 7 operates.
Night usage is much cheaper than the normal day tariff..
But the companies have made the cost of the day usage part of the Economy 7 so much more expensive than the normal cost that it can only save money if you are using several times more leccy in the few hours of night tariff than in the day. (And you won't be using storage heaters in the Summer).
Just using you washing machine and dishwasher on a timer overnight isn't enough to justify the major cost of the day usage, even though these are probably going to be your biggest users.
Biting the hand that feeds IT
