HomeAssistant Template für Sensor Ermittlung günstigste E-Auto Ladezeit

startzeit_template.jinja

{% set charging_duration = states('sensor.mokka_automatisch_laden_dauer_berechnet') | float %}


{% set prices = state_attr('sensor.tibber_prices', 'tomorrow') %}

{% set ns = namespace(
    cheapest_index = 0,
    cheapest_costs = 999999,
    charging_window_costs = 0
) %}

{# How many prices are in the charging window? #}
{% set charging_window_size = (charging_duration / 15) | round(0, 'ceil') %}

{# How many prices do we need to check between 0:00 -6:00 ? #}
{% set prices_to_check = (6 * 4) - charging_window_size %}

{# For each 15min timeslot #}
{% for i in range(0, prices_to_check + 1) %}
  {# Calculate the charging costs in this window #}
  {% set ns.charging_window_costs = 0 %}
  {% for chunk in range(0, charging_window_size) %}
    {% set ns.charging_window_costs = ns.charging_window_costs + prices[i + chunk].total %}
  {% endfor %}
  {# Remember if calculated window is cheaper than before #}
  {% if ns.charging_window_costs < ns.cheapest_costs %}
    {% set ns.cheapest_index = i %}
    {% set ns.cheapest_costs = ns.charging_window_costs %}
  {% endif %}  
{% endfor %}

{# Calculate the starttime #}
{{ (today_at('00:00:00') + timedelta(minutes=(ns.cheapest_index * 15))).strftime('%H:%M') }}