  It was recently shown that the vanishing of the Coulomb field related to the
electric charge of a black hole by virtue of a tiny but non-vanishing photon
mass can produce an electric asymmetry in the universe. This process can have
place both at a cosmological early stage, through primordial black holes, and
in contemporary universe, by means of supermassive black holes at galactic
centers. Possible consequences of the latter case about the role of
electrogenesis in the generation of magnetic fields coherent on galactic scale
have been investigated. In this paper we will discuss the electrogenesis
mediated by primordial black holes and analyze different realizations of the
mechanism in this case.
