Benefit Analysis of Long-Duration Energy Storage in Power Systems with High Renewable Energy Shares: Article No. 527910

Jiazi Zhang, Omar Guerra, Joshua Eichman, Matthew Pellow

Research output: Contribution to journalArticlepeer-review

21 Scopus Citations

Abstract

The integration of high shares of variable renewable energy raises challenges for the reliability and cost-effectiveness of power systems. The value of long-duration energy storage, which helps address variability in renewable energy supply across days and seasons, is poised to grow significantly as power systems shift to larger shares of variable generation such as wind and solar. This study explores the system-level services and associated benefits of long-duration energy storage on the 2050 Western Interconnection (WI). The operation of the future WI system with 85% renewable penetration is simulated using a two-stage production cost model. The impact of long duration energy storage on systemwide operations is examined for the 2050 WI system, using a range of round-trip efficiencies corresponding to four different energy storage technologies. The analysis projects the energy storage dispatch profile, system-wide production cost savings (from both diurnal and seasonal operation), and impacts on generation mix, and change in renewable generation curtailment.
Original languageAmerican English
Number of pages16
JournalFrontiers in Energy Research
Volume8
DOIs
StatePublished - 2020

NREL Publication Number

  • NREL/JA-6A20-78896

Keywords

  • long-duration energy storage
  • power system model
  • price-taker model
  • production cost model
  • storage benefits
  • variable renewable energy

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