> For the complete documentation index, see [llms.txt](https://human-game.gitbook.io/human-memento/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://human-game.gitbook.io/human-memento/gameplay/brigade/energy-new.md).

# Energy (New)

When a brigade has made a successful expedition, the owner of the brigade has to spend extra *energy* collecting the knowledge mementos. The more rewards, the more energy.

If a commander's *energy* balance is greater than the *energy* debts of all his brigades, he can launch a new time travel to the past Eras with one of his brigades. Only when the expedition is successful, he needs to pay *energy*. If his *energy* balance is not enough to pay for a successful expedition, the involved brigade will carry a debt of *energy*. The brigade whose debt is not zero will become feeble. All feeble brigades cannot be dismantled or join a new expedition. 

{% hint style="warning" %}
**Warning**

If a brigade is in a state of feeble for 7 days, it will be terminated. Terminated brigades can only be burned to get *energy*. 
{% endhint %}

How much *energy* needs to be paid for each successful expedition depends on the base ratio and level ratio. The base ratio is 50%. The level ratio is `Max(Brigade Level - 15, 0) * 4%`.

{% hint style="info" %}
**Example**

If a lv.20 brigade makes a successful expedition and earns $100 USD, the owner need to pay $70 *energy*.
{% endhint %}

The owners of brigades can get *Energy* in two methods.

* Burning *Time Machines* and *Explorers*
  * ⭐ = $5 Energy
  * ⭐⭐ = $10 Energy
  * ⭐⭐⭐ = $20 Energy
  * ⭐⭐⭐⭐ = $160 Energy
  * ⭐⭐⭐⭐⭐ = $500 Energy
* Purchasing directly.
  * $1 USD = $1 Energy