current rate sensor not producing cost in energy dashboard

[BottlecapDave]

Discussed in #1230

^{Originally posted by blacknell February 18, 2025}
In the energy dashboard I've added the Current Accumulative Consumption Electricity (XXX) sensor as my kWh sensor. For cost I add Current Accumulative Cost Electricity (XXX) which is the total reported cost by Octopus.

However, this cost sensor includes the standing charge which doesn't make sense given I'm using the 7p tariff for almost everything and how this forms a significant distortion

If I use the current rate for tracking costs it doesn't seem to work. The cost is always showing zero. Part of the problem is I dont really now how HA tracks and stores this in long term statistics. It would need to do the calculation every time slot and store. I'm not convinced it does.

So have I got this right? And if so, shouldn't we have an entity that shows the net price (as we have in the attribute against the cumulative. I could create a template sensor to do this but this just feels all wrong