This is still very much still work in progress, so please use this component with caution.

Ferroamp MQTT support sends updates to these topics:

• extapi/data/ehub (interval 1s)
• extapi/data/eso (interval 5s)
• extapi/data/sso (interval 5s)
• extapi/data/esm (interval 60s)

To avoid too much data into home assistant, we check the timestamp sent by Ferroamp to make sure we only update sensors with new values every 30 second. This interval I expect to be configurable later on.

• Home assistant 0.115.0
• Enable Ferroamp MQTT by contacting Ferroamp Support and to get the username and password for your Energy MQTT broker.
• Enable MQTT in Home assistant and set the broker to your Ferroamp Energy IP and configure it with your username and password received from Ferroamp.

1. Make sure you have git installed on your machine.
2. Navigate to you home assistant configuration folder.
3. Create a custom_components folder of it does not exist, and cd into it.
4. Execute the following command: git clone https://github.com/henricm/ha-ferroamp.git ferroamp

1. Add a sensor for the ferroamp platform to your <config dir>/configuration.yaml

sensor:
  - platform: ferroamp

There are currently no configuration options and this integration will a bunch or sensors with the prefix ferroamp_. For the SSO and ESO sensors, they will include the id of the SSO or ESO unit, eg sensor.ferroamp_sso_123456_pv_string_power.

I'm also still figuring out what some of the sensors actually is, since the Ferroamp API documentaiton still seems to be incomplete in some areas.

I haven't figured out how to check if an entity already exists in home assistant so after first startup you'll see error logging when sensors are added when they already exits:

Entity id already exists - ignoring: sensor.ferroamp_sso_pv_string_power

Inspired from this blog post, I discovered the utility meter sensor available in home assistant. I use it to track grid, solar and battery energy, hourly, daily, monthly by the configuration below in configuration.yml:

utility_meter:
  solar_energy_daily:
    source: sensor.ferroamp_total_solar_energy
    cycle: daily
  solar_energy_monthly:
    source: sensor.ferroamp_total_solar_energy
    cycle: monthly
  battery_energy_produced_daily:
    source: sensor.ferroamp_eso_20030049_total_energy_produced
    cycle: daily
  battery_energy_produced_monthly:
    source: sensor.ferroamp_eso_20030049_total_energy_produced
    cycle: monthly
  battery_energy_consumed_daily:
    source: sensor.ferroamp_eso_20030049_total_energy_consumed
    cycle: daily
  battery_energy_consumed_monthly:
    source: sensor.ferroamp_eso_20030049_total_energy_consumed
    cycle: monthly
  external_energy_consumed_daily:
    source: sensor.ferroamp_external_energy_consumed
    cycle: daily
  external_energy_consumed_monthly:
    source: sensor.ferroamp_external_energy_consumed
    cycle: monthly
  external_energy_produced_daily:
    source: sensor.ferroamp_external_energy_produced
    cycle: daily
  external_energy_produced_monthly:
    source: sensor.ferroamp_external_energy_produced
    cycle: monthly