Time of sensor as a trigger

Configuration
8 
trigger:
  - platform: state
    entity_id: sensor.power_highest_peak_time_today
  - platform: time
    at: sensor.power_highest_peak_time_today
condition:
  - condition: template
    value_template: "{{ states('sensor.power_highest_peak_time_today')|as_timestamp <= now()|as_timestamp }}"
action:
   ...

That will trigger every time the sensor changes and its new state is now or earlier; or when the time on the sensor is reached.