AG Mini-A-CAES/2-TES: Above Ground Compressed Air Energy Storage 1 ...

Mini Mini-A-CAES: CAES: Compressed Air Energy Storage combined with two-level two level Thermal Energy Storage, size 1 to 10 MW
AG Mini AA-CAES/2
CAES/2 TES Concept
CAES is a well known energy storage technology (two existing plants in the world: US and Germany)
Several research groups are exploring innovation in CAES techs (RWE/GE Adele, ESPC, SustainX, etc.)
Our proposal “AG Mini A-AES / 2 TES” is an evolutionary CAES system with:
• Above Ground (“AG”) compressed air storage (not underground cavern, but steel tanks)
• Medium-Small Size (“Mini”) i.e. 1 to 10 MW, about 8 hrs charge / 2 hrs discharge (it can be modified)
• Adiabatic (“A-CAES”): heat produced during compression stored/used to heat air before expansion
• Two-level thermal energy storage (“2 TES”), molten salt and pressurized hot water
Adiabatic CAES concept: compressed air coming out from the
storage system has to be heated before to enter in the air
expander to generate electric power
CAES fired → Natural gas combus�on (CO2 emissions)
The heat produced during compression phase is
dissipated (low compression-phase efficiency)
A-CAES → Heat stored in a TES system
The heat produced during the compression phase is
stored and then used for the power generation