The activation energy of proton conduction was calculated in perovskite compounds based on BaCeO 3, SrCeO 3, BaZrO 3 and CaHfO 3, using a simple static lattice simulation. The calculated activation energies were compared with the values measured experimentally. The calculated values were larger than the observed values, but showed a similar dependence on lattice parameter; both activation energies decreased with an increase in lattice parameter. It was suggested that the static lattice simulation is applicable for the estimation of activation energy in proton conductors.