{# Configuration #}
{% set totalWh = 3200 %}
{% set maxPower = 600 %}
{% set targetChargePercent = 100 %}
{% set sunsetOffset = -3 %}

{% set currentChargePercent = states('sensor.system_flos_bkw_sb_state_of_charge') | float(0) %}
{% set solarAvailable = states('binary_sensor.solar_power_available') | bool(false) %}

{% if solarAvailable and currentChargePercent < 100 %}
    {# Current state infos #}
    {% set timeToSunsetHours = ((as_timestamp(state_attr('sun.sun', 'next_setting')) - as_timestamp(now()))) / 3600 + sunsetOffset %}

    {# Average battery power for the day to reach targetChargePercent #}
    {% set remainingChargePercent = [ 0, targetChargePercent - currentChargePercent ] | max %}
    {% set remainingChargeWh = (remainingChargePercent / 100) * totalWh %}
    {% set remainingAvgPower = (remainingChargeWh / timeToSunsetHours) %}

    {# Today average production power #}
    {% set todayProductionWh = (states('sensor.balkon_solcast_pv_forecast_balkonsolar_forecast_remaining_today') | float(0)) * 1000 %}
    {% set todayOffsetWh = todayProductionWh - remainingChargeWh %}
    {% set todayOffsetPower = todayOffsetWh / timeToSunsetHours %}
    {% set positiveOffsetPower = [ 0, todayOffsetPower ] | max  %}
    {% set limitedOffsetPower  = [ maxPower, positiveOffsetPower ] | min  %}

    {{ limitedOffsetPower | round(0) }}
{% else %}
    {{ 0 }}
{% endif %}