I don’t have it but Leviton makes a really nice one and so does SPAN. There are also cheaper options that are inductive clamps and use signature analysis to monitor what loads are in use and do trend analysis and failure analysis. Sense is a good one.
Any Zigbee device with the power meter: smart socket, smart socket adapter, din rail switch (Zigbee Home Assistant ZHA or Zigbee Tuya) will provide you details about voltage, current and power with the measurement history in Home Assistant (HA).
Below is sample graph on Power on 220v zigbee power adapter (small circulation pump), same graph available for voltage and current.
This discussion is good reminder to install zigbee din rail switch for the power line and measure Yarbo.
I have a few of these on the panels in my house and shop. Work great, real time and saved data.
My whole house solution is called the Emporia Vue Energy Monitor. It’s a self installed system that has small CT current transformer clamps that attach to each circuit in your breaker panel. That way, the system can accurately observe and record real-time power utilization from each circuit in the house. It’s rather cool cause you can watch in real time and see exactly what your house is doing, and drill down and see all of the historical details. Pretty comprehensive.
Since I have so many circuits in my home, I have 3 of these installed that combine their data into one unified dataset
Link
For the Yarbo specifically, I own multiple plug-in monitors, including Kill-A-Watts. This one specifically is a WiFi enabled one I bought on Amazon that also connects with my smart home ecosystem. I don’t remember who makes it I’ll have to go out to the garage and look. It has a color display, and I can see all of the details and graphing via my phone.
Hey! That’s what company I’m running! I have the Vue 3 system. I’ve got three of them in my home system and love them. They monitor every circuit in the house. Never had a problem with their system.
When I get around to it, I plan to upgrade to a SPAN panel system.
They’re amazing systems, but not really economically worth the purchase and install price unless you’re already doing a remodel or a new build (or just like playing with new toys).
Installing SPAN in my case would also mean changing my whole house battery backup system, so there’s a lot involved. Lots of upgrading.
SPAN is really nice for sure. A significant investment. If I was building a new home, this would be top at my list. However, I am pretty impressed with the Leviton system as well. You can have smart breakers or standard breakers and swap them out and upgrade them to smart as your budget allows or you need to monitor additional circuits. It also is very traditional, so any electrician can install it.
With 3 installed, do you have 3 CTs on each of the mains? How does the aggregation work?
Anyone tried the Sense? Some of the reviews aren’t that great.
Sense doesn’t work well if you want to see individual load level detail. It’s just two CTs on the main, and it guesses (“senses”) what it thinks your loads consist of. Things like your central AC compressor kicking in are probably fairly obvious. But smaller loads, it likely has no good idea at all.
Emporia’s Vue doesn’t try to guess what the loads are. You name each breaker’s load yourself. It knows down to the watt what each breaker’s load consists of, so the tracking is by circuit, not necessarily by device. For large loads, you will usually have a dedicated breaker, so that’s perfect. But in like your kitchen, where one breaker probably is daisy chained to multiple outlets, all you know is the total ‘kitchen’ load is. Make sense?
In my setup, I have 3 of the Vue units. Each unit can accommodate up to 16 circuits memory serve. One Vue is sort of the master, and also is connected to the two main legs. The other two Vues are just connected to the branch circuits. All the data gets combined into one unified list of loads.
Please find overnight stats from zigbee power meter for Yarbo Snow Blower below (docked).
Looks like Yarbo is warming up time to time with 2.5h, 1.5h intervals for ~40min. During these peaks consumption goes up to 300W. Yarbo dashboard is created in home assistant now. I will share the same stats for actual charging event soon after completion of the plan.
Makes sense(pun intended).
Some of the reviews on the sense pointed out it is basically its best guess on what is pulling the load. Seems less likely to be accurate.
Thanks for sharing the info.
Anyone use Refoss energy monitor?
I see Siemens has one too. And an announcement on the Emporia’s website where the announce the Siemens partnership. So Siemens is out. 
I had my Yarbo out doing some more snowblower trial runs today, so I took the opportunity to see the dock’s standalone power usage.
When Yarbo isn’t on the dock, the average wattage was around 4-5 watts with minor fluctuation. So not bad at all.
Next test will be observing the charging behavior when Yarbo’s battery is at 20%.
Thanks for doing the test. I’ll do the same thing the next time I send Yarbo out to run a task.
Here’s my test:
ok. Your data is pretty close to mine.
On days I do NOT run Yarbo, I’m seeing on average ~1.3-1.4 kWh being consumed.
We got some light snow yesterday, and the total consumption was 3.0 kWh.