Riemann Sum does does not detect state change from "unavailable" to "0"

Configuration
1

I have this sensor, that integrates the power over time:

  - platform: integration
    name: home_solar_production_energy
    source: sensor.home_solar_production_power
    round: 3
    unit_prefix: k
    method: left

It usually works, but it does not recover, when the underlying sensor changes from unavailable to zero:

template:
  - sensor:
      - name: home_solar_production_power
        unique_id: home_solar_production_power
        unit_of_measurement: "W"
        device_class: power
        state_class: measurement
        icon: mdi:flash
        state: |
            {{
              states('sensor.power_production_now')|float(0) 
            }}
        availability: >
          {{ not false in
             [states('sensor.power_production_now')]|map('is_number')
          }}

This sensor usually goes to unavailable during the night. When it becomes available again, it mostly has a state of “0”.

The Riemann Sum sensor stays in state “unavailable” until the underlying sensor is greater then zero.
These are the relevant rows from the states in the database:

sensor.home_solar_production_power|2023-05-20 19:59:58|15.0
sensor.home_solar_production_power|2023-05-20 21:00:09|0.0
sensor.home_solar_production_power|2023-05-21 00:00:49|unavailable
sensor.home_solar_production_power|2023-05-21 01:01:10|0.0
sensor.home_solar_production_power|2023-05-21 05:52:52|0.01

sensor.home_solar_production_energy|2023-05-20 19:59:58|0.978
sensor.home_solar_production_energy|2023-05-20 21:00:09|0.986
sensor.home_solar_production_energy|2023-05-21 00:00:49|unavailable
sensor.home_solar_production_energy|2023-05-21 05:52:52|0.986

This is a problem because if I reboot HA during that time it will mess up my long time statistics.

Is this the expected behavior, am I doing something wrong or is this a bug?

2

Update to 2023.5.4 It contains some fixes for the Riemann Sum integration for handling the unavailable state.

3

Thanks, but this did not help.
I do think though the problem is in the calculation of long term statistics and not with the integration sensor.

4

add a
| float(default=0)
at the end of your power sensor state
then you could even skip the avaiability section

if 0 would fit your needs in case of being unavailable

Template Editor snippet

{% set xx = -2 %}
{{ xx | float(default=0) }} # ==> gives you -2.0
{% set xx =  2 %}
{{ xx | float(default=0) }} # ==> gives you 2.0
{% set xx = "unavailable" %}
{{ xx | float(default=0) }} # ==> gives you 0
1 Like
5

I am having the same issue and have made a similar post. A 60 second dropout makes a Reimann Sum sensor go offline until solar production resumes. Tom has made suggestions around ‘available’, but sadly none has worked. If I can work out how to insert @justone 's suggestion, I’ll give it a go, but fixing Reimann Sum would be a better outcome, instead of bandaid fixes.

6

Well the (default=0) does nothing but to ensure you get a numerical state in case something goes wrong preventing a numerical state. I never tried but if “0” prevents the Riemann to re-pickup it’s duty, perhaps a (default=0.001) does the trick? All the default= does is to replace an expected non-numerical value by the one given by the default specification. And 0.001 surely won’t add a larger deviation to the summed up energy.

7

I have in effect, tried that using ‘available’. I’ve used 0 and 1, but it hasn’t worked.
I tested it in the Template under Developer Tools and an unavailable entity returned a number, but didn’t help in real life.

I’ve also tried it in the Template test in the way you suggest but will give it another shot in the config.

My formula uses ‘int’ so I’ll (default=2) after that and see.

state: >
          {{ [0, states('sensor.envoy_current_power_production') | int - 
                states('sensor.envoy_current_power_consumption') | int] | max }}

It just seems there is a glitch in the Reimann Sum that I am sure was not there a few months ago.

8

Hi all,

I want to use these Riemann integrations in my configuration.yaml because in the helper section I can’t choose month or year.

Sadly the configuration.yaml is giving a error (platform integration unknown).
Can someone tell me what I am doing wrong?

sensor:
  - platform: integration
    source: sensor.power_usage
    name: monthly_power_usage
    unit_prefix: k
    round: 2
    method: left
    unit_time: mon
    reset: 1st day of the month

  - platform: integration
    source: sensor.power_usage
    name: yearly_power_usage
    unit_prefix: k
    round: 2
    method: left
    unit_time: yr
    reset: 1st day of the year
9

I don’t see the option “reset” in the documentation, micronikje!

10

@RonnieLast

Thanks, you’re right. But that was not the problem. I had in the - platform line one space to many. So the problem is solved that way.

Thanks for helping.