In the past the update interval was limited to a minimum of 10 seconds - is this still a thing in Tasmota today?
That devices uses a BL0937 which is kind of the successor of the HLW8012 but still low end/budget 
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I have a Sonoff S31 flashed with tasmota.
Make sure it is not the s31 light as that unit doesn’t have energy monitoring. This unit is wifi.
I have Athom flashed with ESPHome
I like the Athom plugs preflashed with ESPHome. It was quite easy to get their configuration files from GitHub to flash/update them yourself. They also offer Tasmota preflashed. I’m using 6 for about a year and had none fail so far.
I’ve had no complaints with any of these.
Kasa KP125
Kasa EP25
Shelly 1PM
Aeotec Heavy Duty Smart Switch
Zooz ZEN15
Athom Tasmota US Plug V2
Plus an IoTaWatt.
Update frequency is not really a concern for energy reporting but may be for power reporting for automations.
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That plug features a CSE7766 for power monitoring which is/should be more accurate as the HLW8012 mentioned in other plugs so far. 
Beside also esp inside so full ownership can be taken and the thing should be future proof even years after the vendor filed for bankruptcy 
They used to have CSE7766 but downgraded to a HLW8032 last year 
That heavily depends on how the device actually is calculating the energy used. Often the device just polls the sensor every 
seconds and does a simple integral. If the load is resistive this probably gets the job done but if the is high and the power factor low the calculate energy can be quite off 
Now in case a manufacture ships a device like that with limited or buggy *ware you can change that behavior (and make it more accurate*) in case it has a esp inside 
On the other hand if it is a “black box” plug (
) there is not much to do beside accept it or maybe use a work’a’round in HA to limit the damage 
*best is usual a high esphome internal update interval (maybe 0.1s) for calculating the energy but at the same time a slightly lower/throttled interval for ha (for example 1 or 2s) to don’t bend the server to it’s knees with 50 plugs hammering in 
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Not disagreeing on the internal reading. Was specifically referring to reporting to HA.
What’s reported to HA needs to first calculated internally 
And the sad fact is that limited or even buggy firmware is sometimes shipped to customers when they buying a device and to often never even gets an update 
Best way imho is to bet everything on devices which are capable of running custom firmware (esp based stuff) because that way it’s always possible to fix, change, extended, repair or do what not with the stuff you bought (and completely call your own). Essentially this is something regarding the right to repair 
The 7x Zooz Zen15 smart plugs that I purchased (across four different batches) required three separate RMA’s within one year. Each of the RMA’s was due to faulty power reading spikes which would cause the overcharge protection to trigger and shut off the plug.
After repeated failures of the Zen15 plugs and buggy firmware from Z-Wave devices I was ready to distance myself as much as possible from Z-Wave.
I was driven by frustration to replace my Z-Wave plugs with something reliable and easy to manage. In the end my solution with ESPHome plugs were cheaper, easier to manage, and more reliable. Now every smart plug on my network can be controlled reliably.
Very happy owner of 10+ Shelly Plug S devices.
Easy to use, reliable and very good value for money IMHO.
Hope this helps!
We are proposing the Theengs Plug, energy monitoring, and BLE gateway, back in stock in August:
- Powerful BLE Scanner and Decoder
- Presence Detection Capabilities
- Data Transmission to MQTT Broker
- Compatible with numerous BLE Sensors and Tracker Devices
- YAML free integration thanks to MQTT auto-discovery
- Customizable Settings
- Smart plug remote control
- Vigilant Power Usage Tracking
- Persistent plug state
- Effortless Over the Air update
- On-demand BLE scan
- Open-source firmware
yearh… I was so stupid to buy 10 Ledvance wifi+ plugs, only to realize, 3 months later when I set up HA, they actually belong in a bin… useless product…
…just a comment if anyone out there want to buy Ledvance plugs… Don’t do it !!
they only work with their own app…
Hi
What about ZigBee smart plugs?
Like the blitz wolf be shp15?
Maybe read through this topic
I have shp-15 as well, one does not show any energy measurements, the others work well.
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No good…
Any suggestions for reliable ones possibly ZigBee?
Thanks
I have the same model but different version (mine shows plug_1 instead of plug_3).
Read here for a mini review, warts & all.
Thanks @ShadowFist
I need the eu version do you know if there is the equivalent of your model?
I found these that are lvgems…
https://a.aliexpress.com/_EJa0Wpj
On the model number it says Wh025 and this point to the tuya TS011F…
Sorry mate, can’t help much with sourcing any plugs. My recommendation lies strictly with the ones I purchased, and I’d hesitate to recommend any given the dozens of variants for the plug_1 (check the linked github issue for an idea).
Then again, the model you linked to is a 16A plug, so chances are it’s the same chip.
Personally, I’d buy one and test it out - if it doesn’t work properly, I’d leave it plugged in somewhere as a zigbee router, and maybe connect some non-critical device to it.
Worst case scenario, leave it that way and drop a comment in the issue until it’s fixed.
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What about these athome plugs, esp home compatible?
They are available with homekit or thasmota. Is it difficult to flash esphome on them?
I currently have about 12 Shelly Plus S’ (WiFi) in use, and have recently bought a couple of Nous A1Z plugs (Zigbee) as (a) these can handle 16A and thus 3680W vs the 2500 W of the Shellies and (b) I’ve started to buy Zigbee gear bit by bit, and the Zigbee smart plugs act as routers.
The Nous plugs have acted very well, and I am currently pondering on selling off the Shellies and replacing them with the Nous’.
TLDR: Both Shelly Plug S (WiFi) and Nous A1Z are good products in my experience.