Microgrid Technology Glossary

What is a microgrid?

Join your peers for the unveiling of the latest insights at Gartner conferences. Microgrids are small-scale, low-voltage power systems with distributed energy sources, storage devices and controllable loads.

Are microgrids self-contained?

But because microgrids are self-contained, they may operate in “island mode,” meaning they function autonomously and deliver power on their own. They usually are comprised of several types of distributed energy resources (DERs), such as solar panels, wind turbines, fuel cells and energy storage systems.

How are microgrids transforming traditional electric power systems?

Traditional electric power systems are rapidly transforming by increased renewable energy sources (RESs) penetration resulting in more efficient and clean energy production while requiring advanced control and management functions. Microgrids (MGs) are significant parts of this transformation at the distribution level.

How does an AC microgrid work?

Since an AC microgrid is actually a small-scale AC power system, this connection is easier. When the energy generation does not meet the energy demand, the power grid supplies the required energy to the microgrid. If the generation is greater than the demand, the excessive energy in the microgrid is exported to the power grid.

What is a stand-alone microgrid?

A stand-alone microgrid or isolated microgrid, sometimes called an "island grid", only operates off-the-grid and cannot be connected to a wider electric power system. They are usually designed for geographical islands or for rural electrification.

What is energy storage in a microgrid?

In a microgrid, energy storage performs multiple functions, such as ensuring power quality, performing frequency and voltage regulation, smoothing the output of renewable energy sources, providing backup power for the system, and playing a crucial role in cost optimization.