hi I’m relatively new on homey and had a question
But not sure where to post.
Inwas wondering for the energy consumption feature how I have to read it or how it works. I suppose the total consumption is based on my p1 homewizard dongle.
I want to add energy sockets in between devices to track consumption etc. Yet will the consumption measured and these devices then be added to the total consumption, giving incorrect values in the energy overview?
Also the same for devices I have if I add a fixed consumption in it will it just take a part of the pie chart of the unknown. Or Will it also add on top of the total consumption?
As reference I’m taking about this one:
And this one
The “Unknown” consumption is the consumption of all of your energy monitoring-enabled smart plugs and assumptions of Homey for some devices combined, minus the total P1 usage. So “Unknown” is tracking all usage that Homey doesn’t know where/which device it comes from.
Ok so if i have a device known in homey and it doesn’t give energy consumption it will be in unknown once I add it it will become known and a part of the unknown will disappear.
What about the energy sockets? Let’s I have a microwave not a smart device so not connected to homey. For example purpose I put it on it uses 800w and p1 meter will show consumption 800w.
I know put plug between it. The p1 meter will measure 800w but the smart plug will Also measure 800w. Will the total
Consumption then be 1600w. Or is it smart enough to say ha this is smartplug so it will keep total on 800w and just say that it is used by that plug
The P1 measures how much is pulled from the grid. For example: if you have no energy measuring devices except for the P1 which measures let’s say 600w, then the total “Unknown” usage will be 600w. If you now add a smart plug to a device and that individual device consumes 100w, that 100w is now known and will be shown as the zone name where you put the smart plug in. The unknown usage will now be 500w, since the other 100w is known/measured by Homey.
In addition, regarding the ‘Unknown’ category: depending on how often the energy consumption is updated by your P1/smart meter, the difference in timing can also cause an unknown/difference.
E.g. in my case, the P1 meter sends updates only every 10 seconds, while my smart plugs update every second or even more frequent. As a result a smart meter may already be measuring energy consumption, while the P1 meter is not (it’s lagging at least 10 seconds behind).
Your P1 meter will be defined in the configuration as a cumulative device, so Homey will know that is the total consumption for you home.
Any other devices shouldn’t have that option set, so their measurements won’t be added to the total for the house. Instead, they are subtracted from the P1 value and what is left is in the unknown category.
Hi Adrian
Thank you for the answer this is what I was looking for.
