I am looking for an 18A smart plug (Europe version).
That works with Homey Cloud.
So I can “flow” the hot water production.
If solar production >4000W => turn on the water heater.
I have bought the Tapo P110 since it’s wifi based and the app should connect with Homey…
But apparently that fails!
So what other plugs exists that can take 18A and Homey Cloud (not the Pro version)
18A is going to be difficult, single phase sockets in Europe are almost always rated with a 16A max.
I am also open to a Smart Switch.
(allthough it’s a bit less user friendly).
But I can’t seem to find any that will work with Homey Cloud?
I am trying to help out some customers to improve their autoconsumption of the solar production.
And that’s why I wanted a solution with Homey Cloud (and Tapo, but that isn’t working)
Smart switches will probably have the same (16A) limitation. What kind of inverter is being used? Or perhaps there’s a smart meter that can be read (you won’t know the solar production per se, only how much is flowing back to the grid, if that’s how the system is set up).
Do you only need switching? Or also measuring?
If you do not need measuring, most zigbee plugs will be recognized even without an app.
In that case search google for “smart plug 20A zigbee” there seem to be enough choices
It’s a Growatt inverter…
I know it’s not going to be 100% correct.
But after some weeks of data I will be able to set the correct threshold value.
So that the customer has warm water while limiting the power import.
Most switches I found where also not suitable for WiFi/app control.
Measuring would be nice.
But most importantly is switching.
The ZigBee devices seem to need a Homey Bridge?
I was hoping to build a solution which only need the Homey app.
In theory I solved it with Homey Cloud app.
Growatt inverter which is connected through the app.
And then the Tapo WiFi plug.
But although they are listed, the connection/setup in Homey doesn’t work…
You’ll need to know the power/amperage of the hot water production. Is that really
the 4000W you mentioned? That’s pretty heavy.
This is a fairly new ‘Shelly wifi enabled’ power measuring relais, should handle 25A max. (25 * 230V = 5750 Watts):
The Shelly app claims it supports any Shelly cloud enabled device:
(AFAIK any Shelly wifi device has the option to have it cloud enabled).
Listed where exactly?
Other option would be to use a Relais capable of switching +20a and let a smart switch switch the relais on/off.
But you definitely miss measuring then…
Hello Peter,
The heater is 3000w.
But I have read that a lot of smartplugs fail after a few months if they need to switch high power devices.
So a bit more reserve wouldn’t be bad for longevity.
In the Homey Cloud the Tapo app and plugs are available.
So I thought it should work…
But guess again 
That’s always a good plan.
I would def go for an 18A, or better a 25A relais switch.
About the Tapo stuff: please report to the app creator, so issues can be addressed and solved 
