Using cost enteties to specific energy devices

[teachingbirds (Isabella Gross Alström)]

Energy: Cost for the individual devices

We have a nice setting for the cost calculation on the main energy consumption entities. But we are missing the same option for the individual devices. It is easy to add a template sensor to calculate cost but this will be on the lovelace UI not on Energy dashboard. Adding a cost calculation like in the main energy consumption would be much appreciated.