The desire to extract energy from renewable sources on a large scale has prompted extensive research into new photovoltaic technologies. Molecular and polymeric solar cells are particularly interesting because they use earth abundant, non-toxic elements to form light harvesting panels which are mechanically flexible and have the potential to be very inexpensive. However, devices show only modest efficiencies, begging the question as to how they can be made better. This has prompted investigation into the fundamental mechanisms underlying photocurrent production. Despite a strong attraction between the photo-generated electron and hole, current is produced with almost every (UV-Vis-NIR) photon absorbed by the active layer of the device. Our results, presented here, highlight the extensive influence of ultrafast excited state dynamics on the charge generation process in organic solar cells. More specifically, the initial photoexcited state is significantly delocalized, aiding efficient photocurrent production. After a process of localization, exited states participate in charge transfer reactions following the well-known process of exciton diffusion. I will also present results which suggest that torsional vibrations are important in this localization process, in agreement with photon-echo measurements reported in the literature.