Comment by domh

I've been doing this as well! It's always 6pm-7pm for me which is when my Cosy tariff has the peak rate anyway, which I try to not use. So for no behaviour change I normally get 1-2hrs of free electricity on a Sunday morning! I got 15kWh for free this week by having the immersion, heat pump, washing machine and tumble dryer running. Not bad for 0 effort on my part.