Reload trend sensors

Use this action to load your trend sensors from YAML again, without restarting Home Assistant. Run it after you change them in your YAML configuration so the changes take effect right away.

Trend sensors you create or edit in the UI are updated for you when you save them, so you don’t need this action for those.

Using this action from the user interface

If you prefer building automations and scripts visually, Home Assistant walks you through this action step by step. You pick what to target, tweak a few options, and save. No YAML knowledge required.

To reload the trend sensors from an automation or a script:

1. Go to Settings > Automations & scenes.
2. Open an existing automation or script, or select Create automation > Create new automation.
3. If you’re setting up a new automation, add a trigger in the When section. Scripts don’t need a trigger. They run when something else calls them.
4. In the Then do section, select Add action.
5. From the search box, search for and select Reload trend sensors.
6. Select Save.

This action does not support targets. In the UI, you are not prompted to choose an area, device, entity, or label.

Options in the UI

This action has no additional options in the UI.

Using this action in YAML

If you work directly in YAML, or you want to know exactly what Home Assistant does under the hood, this section has the technical reference. It lists the field names you use in YAML, their types, and which ones are required.

In YAML, refer to this action as trend.reload. A basic example looks like this:

action: trend.reload

This reloads all trend sensors from your YAML configuration.

Options in YAML

This action has no additional options in YAML.

Good to know

• Reloading removes trend sensors you deleted from your configuration and adds the ones you added.
• Only administrators can run this action.
• When the reload is done, Home Assistant fires the event_trend_reloaded event.
• To reload everything in one step, use Reload all Home Assistant configuration.

Try it yourself

Ready to test this? Open Settings > Tools > Actions, search for this action, fill in the fields, and select Perform action. You see what happens on your actual entitiesAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more] without writing a line of YAML.

Still stuck?

The Home Assistant community is quick to help: join Discord for real-time chat, post on the community forum with the action you’re calling and what you expected to happen, or share on our subreddit /r/homeassistant.

Related actions

Explore related actions:

• Reload all Home Assistant configuration: Reloads all YAML configuration that can be reloaded without a restart.