Grid Consumption Accuracy

[StealthChesnut]

Issue with grid accuracy: https://www.facebook.com/groups/foxessownersgroup/permalink/1577479335967576/

"For the last two days I've seen some funny values in my HA energy dashboard. Todays usage, for example, shows we've imported 5kWh from the grid when using the grid_daily sensor for the Grid consumption. But if I change that to use the Hildebrand Glow integration I only see 0.6kWh of consumption. Yesterday was similar, and Octopus, Glow and even FoxEssCloud all seem to agree on consumption. It's just the grid_daily sensor that is wrong."

[StealthChesnut]

Checking my own figures, HA seems to be about 10% down (for grid consumption) vs what Octopus reports that I've used: HA - Octopus (kWh) 3.2 - 3.5 3.9 - 4.3 2.6 - 2.9

The integration sensors should be using trapezoidal as the default method. HA docs recommend "left" for "spiky consumption" devices, which you could argue a lot of these sensors are? https://www.home-assistant.io/integrations/integration/

[Daibutt]

Yes there's soemthing definitely odd with some of the integration sensors. My battery discharge sum and daily both jumped by ~6kWh when I put kettle on. Battery discharge power had been zero prior to that for a few hours as battery was charging from PV. I was wondering whether it's because some of the inputs are at exactly zero for long periods and then suddenly "jump" into action. I would have thought the integration sensor would be able to handle that but maybe not?

I'm giving this a try; Create a sensor with a random 1-10 watts;

- platform: random
  name: random_watts
  minimum: 1
  maximum: 10

And in battery discharge sensor I'm using that instead of zero;

- platform: template
  sensors:
    battery_discharge:
          friendly_name: "Battery discharge"
          unit_of_measurement: 'kW'
          device_class: power
          value_template: >
            {% if (states('sensor.battery_discharge_power') | float ) > 0 %}
            {{ states('sensor.battery_discharge_power') | float * 1 }}
            {% else %}
            {{ states('sensor.random_watts') | float / 1000 }} 
            {% endif %}

Will let you know if that improves things!

[Captain0Kangaroo]

I'm seeing some odd numbers for grid use.

Both export and import are being lumped together in the energy flow data. It use to show up as separate figures with a flow going back out for export.

[Daibutt]

Did you add it to the corect part of the dashboard as Return? Both your values are blue so it looks like it's seeing them both as consumption.

Mine shows return/export as purple;

[Captain0Kangaroo]

I literally just spotted it as you replied!

Totally my bad.

[williamjeccles]

Marking as resolved.