Bonjour @samuel.c.auclair!
I have several Sinope plugs SP2600ZB and it looks like some of them are now reporting a cumulating value for daily energy. Everything was good until January 7th (reported values looke good). However, from this date, the daily energy is still increasing and does not match with values reported by Energy Cost Calculator.
Each day, I put the dailyEnergy value into a virtual device (temperature device, °F shall be read kWh) and history looks like this for one plug :
Do you have this issue?
I also have several Sinope thermostat and I don't have this issue: dailyEnergy is reset to 0 each day,