About this app

Half-hourly draw for seven circuits stacked into a day shaped like a real household — morning peak, flat middle, evening — with the night tariff window shaded behind it. Reports standby load and what it costs annually before anything is switched on, the peak half hour, and the specific saving available from moving hot water, laundry and car charging into the cheap window. That last figure is usually the largest easy win, because nothing changes except a timer.