Thermal evolution of an adiabatic Neptune model using the revised AQUA without the latent heat effect (dashed blue) and with the latent heat (dashed red), and using the H2O-REOS without and with latent heat (black and yellow solid lines, respectively). The black symbol shows Neptune’s present-day effective temperature (T_eff) and the dotted line shows the evolution of the equilibrium temperature (T_eq) for an albedo of 0.3.