NART-EPS Electric Power Subsystem (EPS) provides superior life cycle, depth of discharge, efficiency and reliability compared to its alternatives. Super capacitors provide far better lifecycle and robust thermal operating envelope compared to popular battery options. NART-EPS is its user-friendly development environment. NART-EPS has different options for development and flight models, allowing users to conveniently develop and launch their satellite on a cost and time effective manner. Components used on the system are selected from previous missions and/or thoroughly tested on TVAC to ensure best performance and high reliability on orbit.