Performance and Health Test Procedure for Grid Energy Storage Systems

Murali Baggu, Kandler Smith, Andrew Friedl, Thomas Bialek, Michael Schimpe

Research output: Contribution to conferencePaperpeer-review

2 Scopus Citations


A test procedure to evaluate the performance and health of field installations of grid-connected battery energy storage systems (BESS) is described. Performance and health metrics captured in the procedures are: round-trip efficiency, standby losses, response time/accuracy, and useable energy/state of charge at different discharge/charge rates over the system's lifetime. The procedures are divided into reference performance tests, which require the system to be put in a test mode and are to be conducted in intervals, and real-time monitoring tests, which collect data during normal operation without interruption. The procedures can be applied on a wide array of BESS with little modification and can thus support BESS operators in the management of BESS field installations with minimal interruption and expenditure. Simulated results based on a detailed system simulation of a prototype system are provided as guideline.

Original languageAmerican English
Number of pages5
StatePublished - 29 Jan 2018
Event2017 IEEE Power and Energy Society General Meeting, PESGM 2017 - Chicago, United States
Duration: 16 Jul 201720 Jul 2017


Conference2017 IEEE Power and Energy Society General Meeting, PESGM 2017
Country/TerritoryUnited States

Bibliographical note

See NREL/CP-5D00-67419 for preprint

NREL Publication Number

  • NREL/CP-5D00-71651


  • Batteries
  • Condition monitoring
  • Energy efficiency
  • Energy storage
  • System testing


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