Energy modeling of target infrastructure for energy management in distributed-facilities. In one embodiment, an energy management modeling method including obtaining customer facility information and a customer business type; obtaining energy management industry standard information related to the customer business type; generating a baseline customer knowledge base, based on the obtained energy management industry standard information; obtaining facility historical operational information and operational policy information; generating a first energy operational model using the customer facility information, the baseline customer knowledge base, the facility historical operational information, and the operational policy information; generating a mapping of energy sources to asset systems, using the first energy operational model; generating an optimized energy operational model using the mapping of the energy sources to asset systems, wherein the optimized energy operational model utilizes an objective function of cost, energy consumption, and emission; and providing the optimized energy operational model.