We present the surface generalized born (S-GB) method, based on expansion of energy in a surface integral series. The method can be parametrized for simultaneous reproduction of the reaction field energy for small molecules as well as macromolecules. For a set of 195 small molecules, our S-GB model gives a root mean square (rms) of 0.13 kcal/mol relative to the rigorous polarizable continuum model (PCM).