  The question of what is the source of the energy carried by the radiation is
discussed. The case of a hyperbolic motion is analyzed, describing the
solutions suggested in the past for the "energy balance paradox". The solution
to the paradox is found in considerind the stress force created in the curved
electric field of the accelerated charge, that acts as a reaction force. The
work performed by the external force to overcome this stress force is the
source of the energy carried by the radiation. This stress force is the spatial
component of the four-vactor called "Schott term", that appears in Abraham
four-vector. This novel approach solves the "energy balance paradox".
