I’ve now been using Wonderwatt and Octopus Agile for a full month. I charge up my 6.5 kw battery each night at the lowest rates and also charge up prior to the 4pm peak.
Previously I was on an Octopus day / night tariff, and charged my battery overnight. My average electricity price in January was 28p a unit, 37p peak and 15p night.
Over the last month my average has fallen to 13p.
Thank you WonderWatt !