The Distributed Energy Resource (DER) Interconnection Roadmap (PDF). The Distributed Energy Resource (DER) Interconnection Roadmap (PDF). The Distributed Energy Resource (DER) Interconnection Roadmap (PDF) The roadmap was produced by the U. Department of Energy (DOE) Interconnection Innovation e-Xchange (i2X)—led by the DOE Solar Energy Technologies Office (SETO) and Wind Energy Technologies Office (WETO)—and published in January. . “Distributed energy resource (DER): A source of electric power that is not directly connected to a bulk power system DER includes both generators and energy storage technologies capable of exporting active power to an EPS [Electric Power System]. An interconnection system or a supplemental DER. . Energy storage is expected to play an increasingly important role in the evolution of the power grid particularly to accommodate increasing penetration of intermittent renewable energy resources and to improve electrical power system (EPS) performance. Storage is unique from other types of distributed energy resources (DERs) in several respects that present both challenges and opportunities in how storage systems are. . Interconnection is the result of the process of adding a DER to a distribution system (IEEE Standard 1547-2018).
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