It is a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices, etc. Distributed power sources mainly include photovoltaic power generation units, wind power generation units, diesel power generation units, and other types of power generation units. Microgrid systems mainly include optical storage microgrid systems, wind and solar storage microgrid systems, wind and solar diesel storage microgrid systems, etc.

There are multiple power supply locations in areas without or without electricity, such as communication base stations, remote areas, islands, and oil extraction machines.