Why are distributed energy resources and EV charging important?

Distributed energy resources (DER) and electric vehicle (EV) charging that provide grid services will increasingly be important to manage local distribution needs affordably.

What is a managed EV charging and battery storage program?

A managed EV charging and battery storage program or DER aggregation could address the distribution issue and mitigate net demand variability at the bulk power system. This would reduce the demand variability and associated need for bulk power system flexibility services.

Does der export energy from distribution to bulk power systems?

68 A. Myott, et al., Balancing Intermittency: Initial Analyses, NYISO, July 19, 2023. 69 Note: DER may also export energy from distribution into the bulk power system, as has been increasingly occurring in utility systems over the past decade.

What is a three-stage evolutionary model for electric distribution systems?

Underlying this discussion is a three-stage evolutionary model for U.S. electric distribution systems to enable DER and their evolving use as aggregated DER, or virtual power plants (VPP), for a broad range of grid and energy services (Figure 2).

Why do distributed solar and consumer EV charging systems have operational variability?

In addition to the distribution challenges described above, distributed solar and consumer EV charging introduce operational variability into the bulk power system primarily due to their inherent characteristics of intermittency and unpredictability that impact both supply and demand dynamics.

Can a utility own a distribution system?

Such alignment is complex, integrating 23 A. De Martini and P. De Martini, Bulk Power, Distribution, and Grid Edge Services Definitions, DOE, 2023. 26 Where allowed by law, the utility also may own and operate distribution storage in lieu of a traditional grid solution.