I have similar issue. I have sonoff device that gives output as power W, i tried reimann through UI but … couldnt get it working, not shown anywhere in energy dashboard 
It’s not surprising for the sonos which exposes a power (in W) while the energy dashboard expects an energy (in Wh).
i know, this is why i tried riemann sum integral. I just dont know how to set it up, do i need to make it via configuration.yaml ?
And, im a complete noob on these things 
There’s no need to do anything in yaml anymore. You can do everything from the UI…
Create a new helper using the Riemann (make sure to give it a new name and select your sensor) than wait a bit and you should have the sensor available in the energy dashboard.
The new energy sensor can also be visible in the Developer tools > States… Take a screenshot from there with the attributes and share it here if you still having issues.
1 Like
Yes, thank you. I was just too hesitant, needed to wait for it to get something to show
In my case with a value already in m3, so the Riemann conversion does not seem to be the solution?
Dear,
I created a Sensor (Arduino) which give a value in M3.
I need to convert to energy (Wh) by simply make a conversion (multiplication by +/- 10).
It is something similar to Riemann but no “integration” but easier a multiplication.
Is it possible to create a HELPER which do a multiplication and change the unit to Wh ?
If not, I need to do it in my Arduino and expose energy directly. But I suppose other device on the market expose volume and need to be converted to energy.
Thank a lot
You can create a simple template sensor.
Something like this:
template:
- sensor:
- name: Your new sensor name
unique_id: your_new_sensor_unique_id
unit_of_measurement: "Wh"
device_class: energy
state_class: measurement
state: >-
{% if is_number(states('sensor.your_existing_entity_id')) %}
{{ states('sensor.your_existing_entity_id') * 10 }}
{% else %}
{{ states('sensor.your_existing_entity_id') }} # this will catch any 'unknown' states from the source sensor and replicate that to the new sensor
{% endif %}
1 Like
Would the input sensor need to be in W or KW?
Hi,
I also have an issue like this. I use Tasmota and get entities for Power and “smartmeterreader_energy_total_in” and “smartmeterreader_energy_total_in_out” from my power meter in the Tasmota entities. All so fine, but I can not select the energies in the Energy Dashboard without the “trick” by creating a template sensor (see solution here: Energy consumption with Tasmota power monitoring plug).
But this does not satisfy me 
I also tried to change the device_class, unit_of_measurement and state_class with the customize.yaml, which brings the needed effect of the entity to show up in the Energy Dashboard, but it doesn’t. So to vizualize it for this post here I have the following configuration:
customize.yaml:
#sensor.bitshake_smartmeterreader_energy_total_in:
# device_class: energy
# unit_of_measurement: 'kWh'
# state_class: total_increasing
sensor.bitshake_smartmeterreader_energy_total_out:
device_class: energy
unit_of_measurement: 'kWh'
state_class: total_increasing
And the entities look as follows (after complete restart of Home Assistant):
Although the “…_energy_total_out” has the correct attributes, it does not show up in the Energy Dashboard. I also tried it with state_class: total, but it was the same.
Can someone help here out please?
Thank you!
Ok, it even doen’t work with the solution I linked, so I have no solution yet.
Following problem with the solution which I linked. I added the following sensor templates in the configuration.yaml:
template:
- sensor:
- name: "Stromzaehler_Energie_Total_Bezug"
unit_of_measurement: kWh
device_class: energy
state_class: total_increasing
state: "{{ states('sensor.bitshake_smartmeterreader_energy_total_in')|float}}"
- sensor:
- name: "Stromzaehler_Energie_Total_Einspeisung"
unit_of_measurement: kWh
device_class: energy
state_class: total_increasing
state: "{{ states('sensor.bitshake_smartmeterreader_energy_total_out')|float}}"
And then I really can choose “Stromzaehler_Energie_Total_Bezug” and “Stromzaehler_Energie_Total_Einspeisung” in the Energy Dashboard, but get the following error:
Does anybody knows how to fix this?
Not it works, also without the template Sensor. Problem was, that I set in the customize.yaml
unit_of_measurement: 'kWh'
and it must be
unit_of_measurement: kWh
without the ticks. Furthermore I needed to remove the old statistics via Development Panel->Statistics. There it was shown that the entities have a problem, which can be fixed.
Now I have not template sensors in the configuration.yaml anymore and the following entity changes in the customize.yaml:
#Tasmota
sensor.bitshake_smartmeterreader_power_power_curr:
device_class: power
unit_of_measurement: W
state_class: measurement
sensor.bitshake_smartmeterreader_energy_total_in:
device_class: energy
unit_of_measurement: kWh
state_class: total
sensor.bitshake_smartmeterreader_energy_total_out:
device_class: energy
unit_of_measurement: kWh
state_class: total
Now the energy entities can be selected in the energy dashboard!
I was also having trouble with a template sensor through a riemann helper and adding the helper to the dashboard. As posted above it seems important that the template sensor has state_class: measurement.
Example:
- sensor:
- name: "Current Power"
unit_of_measurement: 'W'
device_class: "power"
state_class: measurement
state: >
{% if is_state('switch.some', 'on') %}
400
{% else %}
0
{% endif %}
After this I created a new Riemann integration using the Helper UI and was able to add the helper to the Energy Dashboard as an Individual device. Hope this helps.