The Onset EG4115 15 Input Energy Meter, Web Server and Data Logger has 0.5% revenue grade accuracy compliance and the ability to measure residential or commercial circuit panels, up to 3-phase 277/480VAC and 6900A. The meter has HomePlug AV powerline communication, an Ethernet port, and 2 USB ports for additional options (ex. WiFi). The embedded web server allows the user to connect to the interface over the internet or on a local area network. Each unit has a data logger that stores up to 64 data points for the lifetime of the hardware, and the user can access data as granular as 1-second averages for the most recent hour of recording. Taken together, the EG4115 is an accurate and flexible solution for monitoring multiple circuits in any residential or commercial energy monitoring application.