They just have outdated information, both Home Assistant and SmartThings fully support smart plugs with Matter 1.3 energy reporting since early October. I guess they were not aware.
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The good news in the Tapo forum thread is this part:
“Since the CSA Alliance released the Matter 1.3 standard in May 2024, TP-Link has been actively developing and certifying multiple Tapo models for Matter 1.3 functionality. As this is a new standard framework, adaptation will take some time. If all goes smoothly, we anticipate releasing firmware that supports Matter 1.3 by the end of 2024.”
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That’s indeed not Matter but a custom integration that periodically polls the plug using the proprietary TP-Link API.
The advantage of Matter, besides being a standard and not requiring TP-Link accounts, is that the plug can push meaningful changes in readings. If the vendor implements it correctly that means less latency in automations.
Works for me on the 4 x power strip. Matter setup with home assistant only. Matter is on off only but tplink integration shows power consumption. Pain to be in 2 different spots but is showing
I am using both, the matter and the TP-Link integration but I don’t have a TP-Link Cloud Account. So the account fortunately seems to be optional for TP-Link integration as well but for sure I would prefer the Matter-only way.
It was optional for old devices / firmwares. According to the integration page not anymore:
If your device is a newer Kasa or Tapo device it will require your TP-Link cloud username and password to authenticate for local access. If you have an older device that does not currently require authentication, you may consider disabling automatic firmware updates to keep it that way.