Hi,
I want to have a counter, that is calculating the monthly energy costs for a specific sensor.
I have two Nous Powerswitches, that I combine into sensor.stromverbrauch_ngt
That Helper have a cumulated kWh value, with a always increasing curve.
I have as well the sensor.hackelbrink_1_strompreis with Euro / kWh. That one is changing on a hourly base.
My Idea to create a derivate failed
sensor
- platform: derivative
source: sensor.stromverbrauch_ngt
name: "Stündlicher Verbrauch Gewerbe"
unit_time: h
round: 2
In that sensor, I have no cumulated view anymore.
Where is my mistake?
How can I get to my monthly energy consumption for that sensor?
Thanks
