1. ePHASORsim is a real-time phasor simulator for large power systems that can model up to 20,000 buses in real-time with a 10 millisecond time step. 2. It has applications in areas like transient stability analysis, SCADA system testing, operator training, and hardware-in-the-loop simulation. 3. A live demonstration of ePHASORsim was shown modeling the Quebec transmission system with 38 buses, 7 generators, and other common power system components.