You need to be reasonably sure you will use electricity at night, eg we use the immersion heater on a timer and the washing machine comes on early in the morning (it has a built-in timer)..
If you use your washing machine, dishwasher, immersion heater and tumble dryer at night you'd probably push half or more total consumption over to night rate.
We only use the immersion and washing machine on the low rate and about a third of our total consumption is at night as a result.
I agree, and for a big load elec item, it's ideal........for everyone else, though..........Yeah, a third seems to be about average with a little bit of effort. A friend has geothermal and is getting about 40% of his consumption onto the nightsaver.
You may not have an immersion but do you have an electric shower? If you do and you shower before 9am then you're on the night rate, so it'd be somewhat similar. We also don't use the tumble dryer either (and we have the old manual style dishwasher that doesn't use any electricity at all.) Yet we still get a third of consumption onto the night rate.Yes, but in the house I have, I don't have an immersion. I have, but rarely use a dryer (due to the warmth of the house and large utility with clothes horse in it...) dishwasher and washing machine isn't enough to justify the cost, imho.
Do you have a lot of halogen downlighters? If you do I suspect they're part of the reason why you can't shift a bigger proportion of your total consumption onto night rate. We replaced the handful we have with a combination of CFL and LED (trying to balance colour), and any other incandescent bulb in the house that's on for more than 10 mins a day was replaced with a CFL.In a house with a lot of downlighters, it makes even less sense - they won't be on at the time of night rate, anyway (too late...)
Nightrate hours should be brought way forward, to say, 21:00.