Energy Usage / Grid Consumption Correction

I know this sounds impossible, but is there a way to correct the power usage ?

I’m currently using Efergy and the “Daily Consumption” sensor to monitor the Grid usage, however this appears to always be around 2.8kWh higher than what my energy supplier is reading.

I added a sensor to use the Daily Consumption then subtract 2.8kWh but obviously that subtracts from the first several hours of the day…

Is there a way to average the 2.8 over the 24 hours?