Potentials computed for the Normal Modes computed with VASP for CHD3
E XC = SRP 0.32 - vdW

Units = E in au, Q in Mass Weighted au  

In order to get the potential:
First do a frequency analysis of your molecule
Then use the normal modes from that analysis (dx dy dz) to do the displacement.
Be careful of the units used: VASP expects angstrom and amu while Q is in Bohr and Hartree atomic mass (m_e = 1).
So the displacement is done like this: X_new,i = X_old,i + Q*dx_i/sqrt(m_i)*0.5291772108/SQRT(1822.88839)
i is the atom index and the same needs to be done of course for Y and Z as well.
The energy in the file is the difference between the displaced energy and non-displaced.
In other words, for Q=0 E=0.
For the energy the extrapolated energy value (E_0, or sigma->0) is taken, but shouldn't differ much from the Free energy (if it differs at all).