We are happy to announce that Storasol has signed an co-operation agreement with MES Energy SA for the market in Greece.

At the 4th International Workshop for Carnot Batteries, Dr. Schneider presented the current state of development of the OPTES-GT battery.

Our Pressurized High Temperature Thermal Energy Storage TESS 3B was developed specifically for use as a thermal power storage (Carnot battery).

For lower power classes, the OPTES battery has been further developed into the OPTES-GT. The OPTES-GT Battery is based on an open Brayton Cycle.

As part of the StoreEnergy fair, STORASOL presented the following study. In a current and a future scenario, an economic comparison is made between the combination of PV & OPTES-Battery and PV & Li-Ion Battery.

The basic engineering has just been completed for the VHTTES (Very High Temperature Thermal Energy Storage) shown in the figure. The storage systems are to be used in a solar power plant and in a thermal battery for storing electricity. The two storage tanks shown are flowed through with 1000 °C hot air and have a usable storage capacity of 10 MWh each.

OPTES® stands for Optimized Pumped Thermal Energy Storage – Battery and combines the advantages of low investment costs with very good power-to-power efficiency. In 2020 the OPTES® Battery was presented for the first time at the IRES (International Renewable Energy Storage Conference). The publication on this can now be read under

Iron silicate with a grain size of 1.8-2.4 mm was tested as a new storage medium in our TESS 3A test storage facility. The first measurement results show very successful tests with an approx. 15-20% higher energy density compared to silica sand.

Storage materials can be tested with temperatures of more than 1000 °C in the latest experimental set-up.

The managing directors of STORASOL are invited to talk at the IRES (International Renewable Energy Storage) conference in March 2020 and will speak about our latest HTTES power storage system.