Generators are reactors that are attached to a specific system. The attached systems usually have amplifiers to multiply the amount of power the generator creates. Generators need to be pumped to generate power just like a Reactor but the power can only be used by the attached system.
Power generation from a generator is done the same as pumping an engine (ENGvs 8 to generate one point of energy, -3 per each extra point.) The power can only be used be the attached system.
When a ship with a generator explodes, add one for each reactor to the size for explosion damage. Due to the hazardous nature of generator, they are at +2 for damage when hit.
Generators do not need external facing.