A system for intelligent web-based monitoring and management of an electrical system is provided. The system is configured to acquire real-time data output from the electrical system, and to transmit a user interface to a client terminal which is configured to display the user interface. In an embodiment, the system is configured to store a virtual system model of the electrical system. The system is configured to generate a predicted data output for the electrical system utilizing the virtual system model of the electrical system, monitor the real-time data output and the predicted data output of the electrical system, and initiate a calibration and synchronization operation to update the virtual system model when a difference between the real-time data output and the predicted data output exceeds a threshold.