# 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.&#x20;

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**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_.&#x20;
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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%`.

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**Example**

If a lv.20 brigade makes a successful expedition and earns $100 USD, the owner need to pay $70 _energy_.
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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
