Display running costs without having to run a report.
Posted: Wednesday 10 January 2018 13:19
I have an EV & which has a ~22kWh battery & you can definitely see when I plug it in, especially when I've left it a few days between charges and it's almost empty! However, my house "idles" at ~800W, which I know is mental so I've started to pay attention.
I recently obtained an Owl Micro+ (my old Owl died #RIPOldOwl) and lovely (scary) as it is to be able to see the real-time Power (kW) & Energy Usage (kWh) on the daily graph and the Energy Usage on the weekly graph, it feels a bit regressive, to have to leave that graph and go to the Report, just to see how much the usage is costing me. If the cost/kWh is filled out in the settings, we ought to be able to easily display running-costs on the graphs.
The report is a bit clunky, but I guess that it serves a purpose for somebody. However, I just want to see the real-time running-cost on my standard graphs (maybe not as an additional plotted line, but included in the contextual popup, and perhaps as text on the Energy Usage bars, on the weekly plot?
So, here I'd like it to also say "Power Consumption £1.41/h", which is just the cost of electricity (£/kWh) * current power usage (kW).
Similarly, here it could also read "Energy Cost £1.30", as we know the cost per unit (£/kWh) and the number of units used.
And finally, the weekly chart could possibly have the cost in brackets, after the usage, but certainly in the popup, as described above.
Yeah, that Thursday cost me £10.79 - ouch! But it was charging my Renault Zoe EV, after 3 days of commuting in Winter (20 miles a day, heater on full), and also some time cooking bread & things in the oven. If you take off the hideously wasteful "idle" usage (~20kWh) & the evening usage, the maths seems weird - how does the 22kWh car charging fill that gap? Maybe a question for another time, or when I've got better stats, after I've fixed my idle usage. I've started to charge daily, so that I can better detarmine the actual cost of motoring - so far it's a wild estimate of 8-12 kWh/day (or £1.45-2.17/day) & that works out at £0.07-0.11/mile (in Summer, it's £0.02-0.03/mile).
I've noticed that the daily usage is in Wh & the weekly is in kWh - I'd rather they were just in kWh, as that's how my electricity provider bills me and a value lower than 1 is perfectly acceptable, as long as there's enough digits after the decimal point.
I recently obtained an Owl Micro+ (my old Owl died #RIPOldOwl) and lovely (scary) as it is to be able to see the real-time Power (kW) & Energy Usage (kWh) on the daily graph and the Energy Usage on the weekly graph, it feels a bit regressive, to have to leave that graph and go to the Report, just to see how much the usage is costing me. If the cost/kWh is filled out in the settings, we ought to be able to easily display running-costs on the graphs.
The report is a bit clunky, but I guess that it serves a purpose for somebody. However, I just want to see the real-time running-cost on my standard graphs (maybe not as an additional plotted line, but included in the contextual popup, and perhaps as text on the Energy Usage bars, on the weekly plot?
So, here I'd like it to also say "Power Consumption £1.41/h", which is just the cost of electricity (£/kWh) * current power usage (kW).
- DomoticzPowerUsage.png (57.65 KiB) Viewed 709 times
- DomoticzEnergyUsage.png (57.8 KiB) Viewed 709 times
- DomoticzWeeklyEnergyUsage.png (49.79 KiB) Viewed 709 times
I've noticed that the daily usage is in Wh & the weekly is in kWh - I'd rather they were just in kWh, as that's how my electricity provider bills me and a value lower than 1 is perfectly acceptable, as long as there's enough digits after the decimal point.