Utility-Interconnected Photovoltaic Systems: Evaluating the Rationale for the Utility-Accessible External Disconnect Switch

Michael Coddington

Research output: NRELTechnical Report

Abstract

The utility-accessible alternating current (AC) external disconnect switch (EDS) for distributed generators, including photovoltaic (PV) systems, is a hardware feature that allows a utility?s employees to manually disconnect a customer-owned generator from the electricity grid. This paper examines the utility-accessible EDS debate in the context of utility-interactive PV systems for residentialand small commercial installations. It also evaluates the rationale for EDS requirements.
Original languageAmerican English
Number of pages33
DOIs
StatePublished - 2008

NREL Publication Number

  • NREL/TP-581-42675

Keywords

  • DER
  • DG
  • distributed energy
  • distributed energy resources (DER)
  • EDS
  • external disconnect switch
  • interconnection
  • photovoltaics (PV)
  • PV

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