Feature request: total peak and off peak grid kWh

[dpw123]

Hi

I would love to be able to see my daily import data split by on and off peak rates.

The times are available from other sensors that would need to be provided in some kind of set up, or directly into config for this integration.

I'd like to see 1 year+ of history, to inform decisions on investing in new batteries, changing suppliers, etc

Thank you