This object exists primarily or exclusively within the SatAM continuity. Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
The Energy Crystals are objects that appear in the Sonic the Hedgehog television series. They are a type of energized crystal located beneath Mobius' surface.
The Energy Crystals are blueish-green crystals that can be harnessed to produce energy. However, they are extremely vital to the sustainment of Mobius' eco-system, as removing them from their resting place can prove catastrophic.
When a giant Energy Crystal was discovered in the Crystal Mine, Dr. Robotnik planned to replace his limited oil supply with it, either unaware or not caring that removing a crystal like that would destroy Mobius' entire eco-system. Before the giant Energy Crystal could get hoisted out of the mines though, the Knothole Freedom Fighters and Chuck were able to sabotage Robotnik's operations.