Optiwatt is not accurate at all when it comes to report charging cost... it is not a question of entering the right rate, but the way they make the whole calculation.
Since February 2022 the tesla app offers the possibility to track charging costs as well... and i could compare with what Optiwatt reports... an example :
- February 12 2022 (Optiwatt)
Charging at off-peak (0.11/Kwh) Optiwatt reported a cost of 0.87CHF
- February 12 2022 (Tesla APP)
Charging at off-peak (0.11/Kwh) Tesla reported a cost of 3CHF
That day the battery consumed 26kwh during the chariging session.... so 26kwh X 0.11 CHF = 2.86CHF
Tesla reports 3CHF which is more or less OK (rounded)... but Optiwatt for the same charging session is reporting 0.87CHF ! Big difference... not sure how they got that number... but seems definetly wrong.
Am i the only one noticing this strange and cheap costs reported by Optiwatt ? seems pretty obvious.