Logic Sum powerconsumption

I have a tenant which shares my power subscription. I have a qubino zwave that monitors his power consumption and a Tibber pulse that monitors the house, including tenants consumption. The tibber pulse only display a 24 h consumption, insight however can show graph of different period though.

I would like to show a number of my consumption and store this as a value. I’m pretty new to this, but if you can point me in a direction, I would appreciate it.