I have solar panels and although a saving may be possible by me switching to Bulb's Smart Tariff the problem I have is the scale of that saving verses the amount of effort needed when time-shifting our activities. Like you, our solar panels means we import very little during the day so the biggest savings then would only be achieved by time-shifting activities we would normally do during the peak time to one of the cheaper times and the only activitiy we regularly do during peak is cooking dinner. Unfortunately, like most homes, we cannot do that earlier or later on a regular basis as it is then that the kids come home from school or we come home from work. Obviously, having solar panels means we want to do our bit to help but the Smart Tariff from Bulb is not going to help many households save money I suspect.