Grafana Difference of Values from 00:00 to 23:59

• What Grafana version and what operating system are you using?
  Grafana 9.1.3 installed in a Raspberry Pi with Home Assistant.

• What are you trying to achieve?
  Create an Energy Metering Dashboard that shows me the daily consumption.

• How are you trying to achieve it?
  I have the energy value in (kWh) updated every 10s (increasing). I created a bar chart that calculates the daily difference between the energy.

• What happened?

It calculates the difference of 1 day of data but not from 00:00 to 23:59 but from 20:00 to 20:00, why? I don’t know. There’s no shifting I could do so the time reference move.

• What did you expect to happen?

I need a bar graph that show me the daily energy used starting from 00:00 to 23:59 Like this one (not Grafana):

Note: I can graph the instant increases of the Energy variable as shown below:

I just need a bar graph that could subtract A-B from the right time to time.

Thanks.

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