Enhancing Emporia Pro Charger capabilites with Home Assistant and Genmon

[dmperl]

I have a 150A main panel that is backed up by a 16KW generator(i.e. 65A ) (with Generac load shedding) . When utility power is available, the Pro EV charger will ensure correct power management to prevent an overload of the 150A panel. Unfortunately, there is no way to reconfigure the Charger Controller when the generator is operational (with a max 65A output).

It's too bad that there is no "Emporia" way to disable Charging Auto-restart after a power failure (i.e. prevent charging when the generator is operational)

Edit: shout-out to: https://github.com/magico13/ha-emporia-vue for a Pro EV Charger on/off switch.

My solution is the following Home Assistant automation:

I turn off charging 3 times:

5 seconds after utility power loss (will work if the Chargers WiFi is still operational)
35 seconds after utility power loss (in case  the "turn off" message was lost due to power loss)
65 seconds after utility power loss (certainly by now the unit is back on and WiFi connected)

Automation Configuration

alias: Power Outage Check
description: ''
triggers:
  - trigger: numeric_state
    entity_id:
      - sensor.genmon_outage_utility_voltage
    for:
      hours: 0
      minutes: 0
      seconds: 5
    below: 210
conditions: []
actions:
  - action: notify.mobile_app_s10_d
    metadata: {}
    data:
      data:
        channel: Energy
        importance: high
      message: Potential Power Outage
  - action: switch.turn_off
    metadata: {}
    data: {}
    target:
      entity_id: switch.pro_ev_charger
  - delay:
      hours: 0
      minutes: 0
      seconds: 30
      milliseconds: 0
  - action: switch.turn_off
    metadata: {}
    data: {}
    target:
      entity_id: switch.pro_ev_charger
  - delay:
      hours: 0
      minutes: 0
      seconds: 30
      milliseconds: 0
  - action: switch.turn_off
    metadata: {}
    data: {}
    target:
      entity_id: switch.pro_ev_charger
mode: single

I'll experiment with "turning on" charging after restoration of utility power, once I'm convinced I have the"turn off" charging process worked out correctly.

[jgyates]

Nice! Thanks for the info