Resource
Energy
Energy is generated by power sources, and is necessary for moving, firing energy-based weapons, and sustaining the operation of some utility systems. Robot cores also generate some energy of their own, though not enough to support significant activity.
Matter
Matter is used to fuse components, and is consumed by ballistic weapons and launchers, which convert it to the appropriate type of ammunition. It can be salvaged from robot remains, though the available amount varies depending on how the robot was destroyed. Cogmind automatically recycles 5 matter from each attached part that is destroyed.
Upkeep
While active, some parts may consume energy (or more rarely, matter) every turn. Utilities and hover/flight units are the most common parts to require upkeep.