Energy Dashboard improvements for Austria

[BieHDC]

This is related to solar production and payout.
The TL;DR is that with laws and type of solar selling plans we know only after the month is over how much we do get paid for a kwh. Searxing the internet ends up with "manually edit the database" which is not satisfying for something i, and other austrians, would have to do once a month. I dont know if other countries have something similar.
I would like to see a gui option where i can edit and set the price of a whole month in one go.