distributed energy resource (smart grid) (DER)

Distributed Energy Resources (DER) are energy sources such as small power plants, wind turbines, or photovoltaic systems that contribute to stable energy production through aggregation.

DER plants can be small energy generating renewable energy plants such as photovoltaic plants, geothermal or biogas plants. In this context, one also speaks of distributed power generation, distributed generation. The small plants are integrated into the smart grid or microgrid of the low- voltage grid, which can lead to degradation of power quality due to voltage spikes or power outages. Distributed Energy Resources (DER) form a useful extension of the existing low-voltage grid and are typically installed close to consumption, such as on an electric customer's rooftop. Power generation is recorded in meters that are transmitted to the smart metergateway( SMGW).

DER power generation systems range in capacity from a few kilowatts (kW) to about 50 MW. Power can also be generated by generators or by water-powered micro-turbines.