FYI the Local Bytes (nice option I think) docs say ESPHome doesn't do cumulative energy monitoring. EDIT: I don't believe this is true as there are posts on the forum which seem to contradict this (here and here). Maybe @AAllport can clarify what is said in his docs?
Looking for energy monitoring plugs that don't rely on continuous polling:
- Shelly Plug Plus UK keeps measurements in memory (faq). Details of energy monitoring in Switch.GetStatus response.
- Tapo P110M supports cumulative energy monitoring with Matter 1.3 apps, including Home Assistant according to their release notes. Used with HA the Tapo plugs seem more trouble than they're worth: forum topic
If anyone understands the energy monitoring APIs of any UK Smart Plugs I'd love to hear what capabilities they have, particularly about sample value storage and cumulative power measurement.
Althom's no relay monitoring UK plug also interests me because high availability is also a priority, so I will probably get one, plus maybe one of each of the above to try out and check the reality.
I may as well get one of the Local Bytes plugs to check out too.
Any others that I really shouldn't miss?! I guess at least one Tasmota, so maybe two Local Bytes plugs, one ESPHome and one Tasmota.
And boom, another thing to consider...
https://www.xda-developers.com/matter-promise-is-a-mess-and-im-going-back-to-zigbee-only-devices/
But his gripes with Matter probably won't affect me (no big corp, no cloud), and you don't have batteries in smart plugs either. So my plan survives.