Obtainium

Obtainium is chemical compound harvested in a solid mineral form and used for the purposes of powering weapons, ships and other energy heavy products.
Much of the Obtainium on The Ring is now gone after years of harvest leaving the reigning governments only two options. To mine deposits that are left on The Surface of Terra. Or to increase production on the planets broken moon which is rich in minerals but has a harsh landscape toxic to life. 
Obtainium sells for a decent amount of credits however a small amount will power a device for weeks. Making them a hot commodity on the trading market and a stable for the current society. Even the average sentient being uses this as their every day power source.