Practical Operations of Energy Storage Providing Ancillary Services: From Day-Ahead to Real-Time

Shengfei Yin, Jianhui Wang, Yanling Lin, Xin Fang, Jin Tan, Haoyu Yuan

Research output: Contribution to conferencePaperpeer-review

2 Scopus Citations


As renewable resources are increasingly penetrating power systems, energy storage systems (ESSs) become essential in providing both energy arbitrage and ancillary services. Because of its high flexibility, ESSs have been taken into account in the daily operation of the bulk power system in many places. This paper proposes a general framework in the current electricity market environment to help system operators model the participation of multi-type ESSs and evaluate the performance of both energy arbitrage and reserve provision. We discuss different levels of ESSs' flexibility in providing ancillary services and also consider a deliberate and practical implementation of the modeling. This framework can be seamlessly integrated into the daily market operation without sacrificing computational efficiency. Numerical experiments validate the efficacy of the proposed framework and show that ESSs possess excellent potential in providing ancillary services for the bulk power system.

Original languageAmerican English
Number of pages6
StatePublished - 11 Apr 2021
Event52nd North American Power Symposium, NAPS 2020 - Tempe, United States
Duration: 11 Apr 202113 Apr 2021


Conference52nd North American Power Symposium, NAPS 2020
Country/TerritoryUnited States

Bibliographical note

See NREL/CP-5D00-76894 for preprint

NREL Publication Number

  • NREL/CP-5C00-80939


  • ancillary services
  • electricity market operation
  • Energy storage system
  • renewable


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