The TRN Lite refers to first and second supply redundancies to account for loads with two layers of redundancy as a way to manage risk (e.g., a battery energy storage system and a generator). These supply redundancies are modeled as independent with the second supply redundancy only being used if the first supply redundancy fails to start. For each critical load, select which supply redundancy(ies) can supply the energy or water resource(s) necessary for that load to function in the event of a disruption to the primary supply. If the critical load does not have an associated supply redundancy, select “none”.