  The dissipation rate due to inelastic collisions between equally charged,
insulating particles in a dilute granular medium is calculated. It is equal to
the known dissipation rate for uncharged granular media multiplied by a
Boltzmann-like factor, that originates from Coulomb interactions. We include
particle correlations by introducing an effective potential, that replaces the
bare Coulomb potential in the Boltzmann factor. All results are confirmed by
computer simulations.

Statistical Mechanics