The generator is a facility on the base, which is responsible for production and storage of Energy that is needed for production.

This facility needs to be built.

The power generator passively restores the Energy resource until it is full. The energy generator gradually absorbs energy that exceeds the energy recovery threshold.

When you have obtained the Battery, use it at the base to refill Power generator.

The power generator consumes Energy when you have production facilities operating at the base.

The power generator can be upgraded to increase the amount of Energy it produces and the maximum amount of Energy it can store.