The production of renewable energy depends heavily on the availability of sun and wind. Decoupling energy production from consumption by storage is crucial for a global strong expansion of renewable energies.
The HTTES system provides an inexpensive and very efficient way of storing electrical energy from renewables.
We developed two different systems to store energy:
Thermal Battery with ORC/steam cycle
With this system electricity to electricity efficiencies of 35-45% are possible. The main advantage lies in low investment costs when using established technologies available on the market (waste heat boiler, steam turbine etc.).
Pumped Thermal Energy Storage
With this system, realistic electricity to electricity efficiencies of up to 60-75% are possible. Therefore, this system is ideal for storing surplus electricity. When compared to battery storage, this system has the advantage of significantly lower investment costs and longer service life.