Approaching redox processes from viewing molecules as electronically open quantum systems requires the conceptual and technical knowledge from fields of research such as high-level electronic structure theory, response theory, non-equilibrium statistical mechanics, molecular dynamics, quantum transport, electron transfer theory, and multiscale modelling. The project has therefore gathered collaborators from these research fields, and part of the initial work has been on merging and understanding concepts, relations and terminology from these fields. Electronic structure theory for photoactivated redox processes is a complicated topic since one must be able to describe the result of an electron transfer (the redox), compute ground and photoexcited electronic states of the reacting systems along the reaction coordinate, while knowing that solvent effects will have a significant effect on the electron transfer process.