Economy 7 hours

I live in the east Midlands. I just saw a graph that shows Economy 7 kicks in at different times in the various counties. I am in the East Midlands.

What time & duration is it on Bulb?

So it doesn’t depend on Bulb necessarily, it’s more the make of your meter. It’s some 7 hours between 11pm to 7am. To know which exactly, you can do a ‘space test’, which is slightly brutal… You see which register is ticking over between 11pm to 11:30pm, and between midnight and 12:30am, and also 6:30am and 7am.