> For the complete documentation index, see [llms.txt](https://wiki.pulsar.game/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.pulsar.game/game-systems/power-supply.md). # Power Supply [**Motherships** ](/assets/structures/mothership.md)have a **Power Supply capacity** stat that serves as a **supply cap for Structures.** Constructing and controlling a [Structure ](/assets/structures.md)requires a certain amount of Power. Different types of Units may have different Power requirements. Also, as Structures level up they will generally require more Power. A Structure cannot be constructed if the Mothership constructing it does not have enough Power Supply left to control it. When a Structure is destroyed, it stops drawing Power from the Mothership. Leveling Up a Mothership will increase its Power Supply capacity.