In general, in Table we can observe that the RMSDs of the excitation energies are systematically smaller for the triplets than for the singlets. We assume that this is because the J term (Equation ( )) between two LE products localized on two different fragments vanishes for the triplet local excitations, because the transition density between the ground state and triplet states is zero. On the contrary, the K terms are non-zero (but small) for singlets and triplets. Because there are fewer excitonic couplings for triplets, smaller errors can be expected.