God knows how I found this but was reading Uswitches info on economy 7 and found this bit interesting
The kind of appliances you have
To make the most of Economy 7 it helps if appliances like your dishwasher, washing machine and tumble dryer have a timer so that you can run them overnight, when your electricity is cheaper.
Taken from
http://www.uswitch.com/gas-electricity/ … y-7/#step9
Hardly good advice considering the recent spate of fires