Integration  Riemann sum integral
The integration
platform provides the Riemann sum of the values provided by a source sensor. The Riemann sum is an approximation of an integral by a finite sum. The integration sensors is updated upon changes of the source. Fast sampling source sensors provide better results. In this implementation, the default is the Trapezoidal method, but Left and Right methods can optionally be used.
Configuration
To enable Integration Sensor in your installation, add the following to your configuration.yaml
file:
# Example configuration.yaml entry
sensor:
 platform: integration
source: sensor.current_power
Configuration Variables
 source
(string)(Required)
The entity ID of the sensor providing numeric readings.
 name

(string)(Optional)
Name to use in the frontend.
Default value:
source entity ID meter
 round

(integer)(Optional)
Round the calculated integration value to at most N decimal places.
Default value:
3
 unit_prefix

(string)(Optional)
Metric unit to prefix the integration result. Available units are
k
,M
,G
andT
.Default value:
None
 unit_time

(string)(Optional)
SI unit of time to integrate over. Available units are
s
,min
,h
andd
.Default value:
h
 unit
(string)(Optional)
Unit of measurement to be used for the integration.
 method

(string)(Optional)
Riemann sum method to be used. Available methods are
trapezoidal
,left
andright
.”Default value:
trapezoidal
In case you have an appliance which produces spikey consumption (like an on/off electrical boiler) you should opt for the left
method to get accurate readings. If unit
is set then unit_prefix
and unit_time
are ignored.
Energy
An integration
sensor is quite useful in energy billing scenarios since energy is generally billed in kWh and many sensors provide power in W (Watts).
If you have a sensor that provides you with power readings in Watts (uses W as unit_of_measurement
), then you can use the integration
sensor to track how much energy is being spent. Take the next configuration as an example:
sensor:
 platform: integration
source: sensor.current_power
name: energy_spent
unit_prefix: k
round: 2
This configuration will provide you with sensor.energy_spent
who will have your energy in kWh.