APPA Library

"Microgrid: Ability to Detach from the Grid"
Author: Kevin Krause, P.E., LEED AP
Published In: Facilities Manager
Date: May/June 2015

A microgrid is a localized electrical network that allows campuses and other similar-sized districts to generate and store power from various distributed energy resources (DERs). Potential DERs include cogeneration as well as renewables sources such as wind turbines and solar photovoltaics. Balancing captive supply and demand resources—including thermal and electrical load—within its defined boundaries, this type of energy system provides resiliency. A microgrid is capable of “islanding” itself as needed or desired from the larger utility grid, for example during extreme weather events or at times when self-generation is more cost effective. A smart interface allows power to be supplied to and/or received from the grid. A working microgrid typically includes distributed generation, storage, power electronics and, increasingly, smart buildings.

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