Calculated values for the enthalpy of formation of all the binary intermetallic compounds described in the COST 507 Thermochemical Database for Light Metal Alloys are compiled. The optimised descriptions of the Gibbs energies of all phases, present in the 44 binary systems stored in this database, were obtained after a Calphad-type assessment. The database contains 171 intermetallic compounds. All the formation enthalpies were calculated at 298.15 K. For compounds stable only at temperatures higher than 298 K, the enthalpies were calculated in the temperature range of the stable existence of the compounds. Some comments concerning enthalpies calculated using CALPHAD methods are presented.