> For the complete documentation index, see [llms.txt](https://docs.fullscreen.no/info/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fullscreen.no/info/game-creator-2-assets/inventory-extended/examples/fuel-system.md).

# Fuel System

### Overview

The Fuel System allows items to act as a **power source** for processing systems such as furnaces.

Fuel is consumed over time to keep processes like smelting running.

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### Required Item Property

To make an item usable as fuel, add the following property to the Item asset:

* **Fuel**
  * Defines how many seconds the item will provide fuel. If you set the value to 60, the item's fuel will last for 60 seconds.

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### How It Works

* Processing systems (like furnaces) will continue running **as long as fuel is available**
* When fuel runs out, processing will **pause automatically** if no other items with fuel property is found.