For both systems, the behavior of the solvent shift is very similar in both the RAS-SF and the cDFT calculations, despite significant differences methodology: RAS is a correlated wave function approach and is using excitedstate SCRF iterations to compute the state-specific solvation energy, while the cDFT-based ∆SCF procedure uses two ground-state calculations, one of them with a charge constraint that forces the monomers to integrate to ±1 charge. Despite these differences, the solvent shift is found to be a linear function of 1/R, in accordance with the Born model of two well-separated charges in a dielectric medium. For C 2 H 4 • • • C 2 F 4 , the shift varies by about 0.6 eV (14 kcal/mol) over a 1.5 Å change in R, at both levels of electronic structure theory, despite the fact that the absolute shifts are offset by about 0.1 eV. The slope (solvent shift versus 1/R) that is obtained from RAS-SF + PCM is within 10% of that obtained using cDFT + PCM, for both dimers. These tests suggest that the combination of a PCM with the RAS-SF ansatz for CT states provides a meaningful description of solvation for a photo-excited ion pair.