Hello,
It would be necessary to add the energy export prices too.
Thanks.
Hi,
Do you mean the selling prices for electricity, for example, in case you have a PV installation?
Voting for your own suggestion will get it a bit further forward. 
Yes, exactly. 
The PVPC prices is not only import prices, is export prices too. If you need to calculate de bill, this value is needed.
Thanks,
Could you vote? It will helps too. 
I think in order to develop something like this then the developers needs a place where they can extract those prices.
I am not sure this is something that should be incorporated into the HA core, since HA is a software piece that is used globally and for many Spanish electricity prices would be uninteresting.
I did not vote for your suggestion, because I am in Denmark, so Spanish prices are not on my interest list.
I have the Nordpool integration for raw electricity prices in Northern Europe, which many of the Danish prices is directly related to and then the Eloverblik integration for transmissions costs.
From those two I can calculate the precise prices here.