In 2010, Desrues et al. were the first to present an investigation on a pumped thermal energy storage system for large scale electric applications based on Brayton cycle. The system works as a high temperature heat pump cycle during charging phase. It converts electricity into thermal energy and stores it inside two large man-made tanks.
Pumped Thermal Electricity Storage or Pumped Heat Energy Storage is the last in-developing storage technology suitable for large-scale ES applications. PTES is based on a high temperature heat pump cycle, which transforms the off-peak electricity into thermal energy and stores it inside two man-made thermally isolated vessels: one hot and one cold.
Pumped hydro energy storage (PHES) system PHES system is the most widely implemented MES system with a huge energy capacity, long storage period and high efficiency .
The energy storage system is regarded as the most effective method for overcoming these intermittents. There are a variety of ESSs that store energy in various forms. Some of these systems have attained maturity, while others are still under development.
Specific storage solutions might be chosen based on the application's performance needs. For large-scale energy storage applications, pumped-hydro and thermal energy storage systems are ideal, whereas battery energy storage systems are highly recommended for high power and energy requirements.
In this scenario, Pumped Thermal Electricity Storage or Pumped Heat Energy Storage constitutes a valid and really promising alternative to PHS, CAES, FBs, GES, LAES and Hydrogen storage.