According to my quantum mechanics book, the electron stays in the ground state because it is in an equilibrium between two forces: Larmor's radiation law which tends to make it fall to the nucleus and the kinetic energy that is generated when you localize the electron in time.

Where does this energy come from? Is it violating conservation of energy? Is there a "quantum force" independent of the gravitational and electromagnetic forces?
I'm guessing no, but why?