Model-based design of power management and distribution controls is specifically targeted at deep space autonomous systems (such as Radioisotope Power Systems) in this proposal. System controls developed with this approach could provide fault tolerance, autonomous reconfiguration, stability, power management, and optimal resource allocation. It is anticipated that the software and model library developed in the effort will coalesce into a software product that can be applied to other NASA programs as well. In addition, PCKA will be well-positioned to provide services including development of additional models and implementation of real-time system simulations. The proposed approach is sufficiently general and scalable that potential target applications include (in addition to spacecraft power systems) electrical power systems on a wide range of military platforms (aircraft, ground vehicles, shipboard) and also commercial terrestrial power grid and micro-grid applications. Of particular interest are micro-grids in government facilities that, under Executive Order 13423 of 2007, are required to achieve a 30% reduction in energy intensity in the FY20062015 timeframe. Government facilities offer a unique setting to incorporate and investigate new ideas in the control of terrestrial micro-grids in a more controlled and isolated environment than is feasible in the commercial electric power grid.