solvation energy

https://dx.doi.org/10.1351/goldbook.ST07102
The change in Gibbs energy when an ion or molecule is transferred from a vacuum (or the gas phase) to a solvent. The main contributions to the solvation energy come from:
  1. the cavitation energy of formation of the hole which preserves the dissolved species in the solvent;
  2. the orientation energy of partial orientation of the dipoles;
  3. the isotropic interaction energy of electrostatic and dispersion origin; and
  4. the anisotropic energy of specific interactions, e.g. hydrogen bonds, donor-acceptor interactions etc.
Source:
PAC, 1999, 71, 1919 (Glossary of terms used in theoretical organic chemistry) on page 1962