Gaussian 03 Online Manual
Energies, "analytic" gradients, and numerical frequencies.
The AM1 energy appears in the output file as follows (followed by the x, y, and z components of the dipole moment):
Energy= -.091965532835 NIter= 10. Dipole moment= .000000 .000000 -.739540
The energy is as defined by the AM1 model. Note that energy differences computed from the values in semi-empirical calculations are in Hartrees and may be compared directly with energy differences computed from jobs using other methods.