Distributed Energy Resources are often referred to as “DERs”
From the Advanced Energy Economy (AEE) Website: “DERs are physical and virtual assets that are deployed across the distribution grid, typically close to load, and usually behind the meter, which can be used individually or in aggregate to provide value to the grid, individual customers, or both. A particular industry interest seems to be centered on DERs — such as solar, storage, energy efficiency, and demand management — that can be aggregated to provide services to the electric grid.” (Distributed Energy Resources 101: Required Reading for a Modern Grid, on AEE.net)
One other definitionon DERs from ArenaWire in Australia as follows: “…small-scale units of local generation connected to the grid at distribution level….Common examples of DERs include rooftop solar PV units, natural gas turbines, microturbines, wind turbines, biomass generators, fuel cells, tri-generation units, battery storage, electric vehicles (EV) and EV chargers, and demand response applications. These separate elements work together to form distributed generation.” (Arenawire, March 2018)
DERs are advanced technology allowing for two-way power flow on the grid, so these units can generate power that flows back into the grid for use by other customers.