Microgrid: A local energy grid, powered by one or more sources, with control capability, allowing it to operate independent from the traditional utility Grid
Islanded Microgrid: A Microgrid operating independent of the traditional electric utility with no connection to the Grid
Grid-Connected Microgrid: A Microgrid that is connected to the traditional electric utility Grid and that can either provide power to the Grid, pull power from the grid, or both. A Grid-connected Microgrid must disconnect from the Grid whenever the Utility Grid loses power