Pumped-Thermal Electricity Storage Based on Brayton Cycles

Andreas Olympios, Joshua McTigue, Paul Sapin, Christos Markides

Research output: Chapter in Book/Report/Conference proceedingChapter


Pumped-thermal electricity storage (PTES) based on a reversible (Joule-)Brayton cycle is a promising grid-scale energy storage technology, whose working principle is to store electricity in the form of high-grade thermal energy. This chapter provides an overview of the inner workings, operating principle and current development status of the many PTES variants, as proposed to date in the scientific literature or by manufacturers. The potential and competitiveness of the various candidate designs is quantified by - and discussed thanks to the definition of - specific techno-economic indicators. Investment cost and thermodynamic performance estimates are reported and used to assess the value of this technology as a potential large-scale, long-duration and long-lifetime energy storage option with unique sector-coupling features and low geographical constraints.
Original languageAmerican English
Title of host publicationEncyclopedia of Energy Storage
Subtitle of host publicationVolume 2 - Thermal Mechanical Energy Storage; Electrochemical Storage
EditorsL. F. Cabeza
StatePublished - 2022

NREL Publication Number

  • NREL/CH-5700-86089


  • electricity storage
  • pumped-thermal electricity storage
  • techno-economic analysis
  • thermo-mechanical energy storage


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