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Pumped thermal energy storage (PTES) as smart sector-coupling technology for heat and electricity

Wolf-Dieter Steinmann, Dan Bauer, Henning Jockenhöfer and Maike Johnson

Energy, 2019, vol. 183, issue C, 185-190

Abstract: Thermal energy storage combined with thermal cycles is an alternative option for storage in electrical power grids. Intermediate storage of electric energy as heat offers advantages such as free choice of site, small environmental footprint, life expectancies of 20–30 years and optional low-cost backup capacity. The key element in pumped thermal energy storage (PTES) concepts is the application of a left running thermal cycle to transform low temperature heat into high temperature heat, which is stored in the thermal storage during charging. PTES allows higher storage efficiencies than a direct electric heating of the thermal storage unit. The optional combination of electricity and heat during charging and discharging makes PTES a promising tool for the management of various types of energy in systems with high shares of renewable energy.

Keywords: Thermo-mechanical energy storage; Bulk energy storage; Pumped thermal energy storage; CHEST (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (29)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:183:y:2019:i:c:p:185-190

DOI: 10.1016/j.energy.2019.06.058

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