We estimate the Galactic supershell (GS) masses and energies. We developed and used an automatic algorithm. The study was carried out making use of the Leiden-Argentine-Bonn (LAB) HI survey in the outer part of the Galaxy. The algorithm was applied only to a set of GSs from the catalogue of Suad et al. (2014, Cat. J/A+A/564/A116), those showing HI-emission surrounding its central cavity in at least three quarters (or 270 degrees) of its angular extent. A total of 490 GSs fulfilled this criterion. Among them, 308 are completely surrounded by walls of HI-emission (Group A) and in the remaining 182 the central HI minimum is surrounded by ridges of HI emission in at least 270{deg} of its angular extent (Group B).