Not really, not until I am able to force discharge (which is imminently, hopefully) and I find that our consumption of the battery is all over the place. Not to mention of course, the wind and sun turns up whenever they like and this has created a good deal of variation in pricing from Octopus. So, coordinating slot windows becomes quite tricky. Absolutely, First World problems of course and ultimately, I am trying to maximise my investment in my GivEnergy AIO, which incidentally is blowing my original predictions out of the water at the moment.