I think GP meant overheating/overcooling during off-peak hours? In which case plenty of people in well-insulated buildings go along with this, motivated by lower electricity prices during off-peak hours.
I took it as over-heating/cooling during peak electric production time (daylight probably) when power is more available in order to reduce usage during off-peak times. I think it would require compulsion or a large amount of voluntary adoption on the part of the customers to really make much of a difference though, and I doubt that the latter is likely on a meaningful scale (though I could be wrong of course).