https://doi.org/10.1351/goldbook.16218
The negative of the standard Gibbs energy change (i.e., \(-\Delta G^{\circ}\)) for outer-sphere electron transfer in polar solvents, where the electrostatic work terms in the expression used for the calculation of the Gibbs energy of photoinduced electron transfer are in general negligibly small.
Note: The work term might not be negligibly small even in polar solvents for large molecules undergoing a large change in dipole moment upon electron transfer.