Abstract: A branch circuit monitoring system includes a plurality of current sensor modules that are installable in a panelboard. Each of the current sensor modules may be associated with a respective one of a plurality of branch circuits included in the panelboard. Each of the current sensor modules may include a current sensor, operating logic and a communication module. The current sensor may measure a power parameter of the respective branch circuit associated therewith. The operating logic may be coupled with the current sensor and the communication module, and may direct the overall functionality of the current sensor module. The communication module may be operable to communicate with a device external to the current sensor module.