Home Assistant Blueprint for Activating Lights At Sunset

lights_on_at_sunset.yaml

blueprint:
  name: Lights On At Sunset
  description: Turn on the following lights at sunset
  domain: automation
  input:
    # Create a variable for identifying the light to act upon
    target_light:
      name: Lights
      description: This is the light (or lights) that will be activated at sunset
      # Use a selector, to pick the light(s)
      selector:
        target:
          entity:
            domain: light
    # Create a variable for capturing the desired brightness of the activated lights
    target_brightness:
      name: Brightness
      description: Brightness of the light(s) when they're activated
      default: 50
      # Use a selector, to set the brightness
      selector:
        number:
          min: 5
          max: 100
          mode: slider
          step: 5
          unit_of_measurement: "%"
    # Create a variable for capturing the desired offset for shifting the trigger
    elevation_shift:
      name: Elevation Shift
      description: Using an elevation offset (height of sun relative to the horizon) to shift the sunset trigger, either earlier or later. Positive values bring the automation start time forward, whilst negative values delay the start time. To approximate Golden Hour - set the Elevation Offset to 1.
      default: 0.0
      # Use a selector, to set the time shift or offset
      selector:
        number:
          min: -3.0
          max: 3.0
          mode: slider
          step: 1.0

# Prevent the automation from running concurrently
mode: single

# Define the variables used in the action section
variables:
  target_brightness: !input target_brightness
  target_light: !input target_light

# Define the trigger for the automation
trigger:
  # Using the state of the sun to act as the trigger
  platform: numeric_state
  entity_id: sun.sun
  attribute: elevation
  # Can be a positive or negative number
  below: !input elevation_shift
  
# Add a condition to ensure that this only triggers near sunset, in the evening
condition:
  # Check that it is after sunrise
  condition: sun
  after: sunrise
  # Add a buffer to be sure
  after_offset: "01:00:00"  

# This section will take action on the lights, and turn them on
action:
  # A very simple structure of turning on the selected light(s)
  - service: light.turn_on
    target: !input target_light
    # Set and pass the desired brightness
    data_template:
      brightness_pct: "{{ target_brightness | int }}"

Thanks, this is a useful practical example for me to get started with blueprints.