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2. BASIC DATA

🚨 IMPORTANT NOTES 🚨

  • start and end
    • When using a start and end which spans midnight, the output will change after midnight, as the source data will change as well (the data for the previous day will no longer be available). To avoid issues with changing data it might be best to use a trigger based template sensor and trigger it e.g. an hour before your start setting.
    • In case a time string like "16:00" is provided for the end time, this will be the time today if inlcude_tomorrow is not provided or set to false. When set to true it will be the same time tomorrow. If no data for tomorrow is available, it will in practice be next midnight.
  • using look_ahead
    • look_ahead doesn't automatically include the dates of tomorrow if it is currently after the time set for end. That will just make the data selection empty and an error message will be the output of the macro.
    • With look_ahead set to true the start date will always be in the future, unless mode='is_now' is set.
    • setting look_ahead to true will move your data range, and the macro has no knowlegde about the data in the past. So if the cheapest time is eg 13:00, there will be a new cheapest time after that hour is passed. To avoid issues with changing data it might be best to use a trigger based template sensor.
  • conversion of input to match source data and/or provided program, weight or no_weight_points (see 3. ADVANCED DATA)
    • hours, start and end will be converted to be divisible by 5, 10, 12, 15 or 30 minutes (watherever is closest to the current setting), hours and end will be rounded up, start will be rounded down. If there is a conflict between 2 of these calculations (eg hours is divisible by 12 minutes, and start by 10 minutes) they will all be converted to be divisible by 5 minutes.

PARAMETERS

hours float (default: 1)

The number of consecutive hours to be used, can be any number. If it is not a whole number, it will be converted so that the number of minutes are divisible by either 5, 10, 12, 15 or 30 minutes. Can be set to 'all' to include all hours between the start and end time.

start time string, datetime (string), number (default: 00:00)

The start time to take into consideration for the value selection. By default it will be last midnight. Time strings should be in military time so eg 16:30. If include_today is set to false it will be the time tomorrow, otherwise it will be today. If set to a numeric value will be treated as a timestamp, so if you use something like 3600 it will be 01:00 UTC on 1st of January 1970. Anything which can be converted to a datetime using as_datetime will work. In case a datetime string or number is used, the date from the resulting datetime value is leading. include_today and include_tomorrow will not be used for the start time then. The minutes of the start time will be recalculated to 5, 10, 12, 15 or 30 minutes.

end string (default: 00:00)

The end time to take into consideration for the value selection. By default it is set to next midnight, if include_tomorrow is set, it will be midnight between tomorrow and the day after tomorrow. Time strings should be in military time so eg 16:30. If include_tomorrow is set to true it will be the time tomorrow, otherwise it will be today. A numeric value will be treated as a timestamp, so if you use something like 3600 it will be 01:00 UTC on 1st of January 1970. Anything which can be converted to a datetime using as_datetime will work. In case a datetime string or number is used, the date from the resulting datetime value is leading. include_today and include_tomorrow will not be used for the end time then. The minutes of the end time will be recalculated to 5, 10, 12, 15 or 30 minutes.

include_today boolean (default: true)

Determines if the data of today should be used. Is only used when no start parameter is provided, or if a time string is used for the start parameter.

include_tomorrow boolean (default: false)

Determines if the data of tomorrow should be used. Is only used when no end parameter is provided, or if a time string is used for the end parameter.

look_ahead boolean (default: false)

Set to true to only include prices as of now. If combined with start the latest time of the two is used (so if the start parameter is set to a future time, that time will be leading, if it is set to a time in the past, the current time will be leading). If not combined with the parameter start you can achieve the same by using start=now()

EXAMPLE

{% from 'cheapest_energy_hours.jinja' import cheapest_energy_hours %}
{% set output = cheapest_energy_hours(sensor='sensor.cheap_energy', hours=2.25, start='12:00', end=today_at('19:00') + timedelta(days=1), look_ahead=true) %}

NAVIGATION

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