No problem.
I store input_text.fi_fo_buffer as a list of 48x kW values for each 30 minute time slot. I chose kW as it would fit inside the 255 char limit.
Every 30 minutes I reset the input_text.fi_fo_buffer with elements [1:48] + the current value of power_load_no_var_loads. It might be more accurate to use the rolling 30 minute value, but I haven’t implemented that.
alias: read_sensor_data
description: ""
trigger:
- platform: time_pattern
minutes: /30
condition: []
action:
- service: input_text.set_value
target:
entity_id: input_text.fi_fo_buffer
data:
value: >
{{ (states('input_text.fi_fo_buffer').split(', ')[1:48] + [
(states('sensor.power_load_no_var_loads')|float(0)/1000)|round(1)])
|join(', ') }}
mode: single
I have setup the fifo using helpers:
and you need to prefill with 48 values, one neat benefit is you can change the prefil at any time, if for example your forecast household load changes.
