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AirBattery energy storage system

Designed to enable total renewable integration. Providing grid-scale, ultra-long duration storage.

As the energy transition advance, dependence on intermittent renewable energy  grows, leading to grid vulnerability during long periods of undersupply.

Traditionally, fossil fuel power plants provided backup during these times. Augwind's AirBattery offers a sustainable alternative, replacing fossil fuel generation with a cost-effective, eco-friendly energy storage asset.

The AirBattery System

The AirBattery combines the strengths of Compressed Air Energy Storage (CAES) with those of Pumped Hydro Energy Storage (PHES) to offer grid-scale, multi-day energy storage. It utilizes cost effective geological compressed air storage, along with efficient hydroelectric turbomachinery.

The system uses a closed-loop liquid piston mechanism to compress and expand air in an underground, near-isothermal process. Once compressed, the compressed air is stored in underground salt caverns (which are prevalent in the natural gas industry throughout the world), waiting for discharge.

The AirBattery is designed to store and dispatch energy for long durations-
Days, weeks or monthes, depending on the cavern's volume.

The AirBattery System
Key Advantages:
Cost Efficiency

The cost of increasing storage duration is only the cost of increasing the cavern volume. As opposed to other CAES technologies (such as A-CAES) there is no need for thermal storage (in the form of heat or fossil fuels).  This enables the AirBattery to provide much lower capex per kWh installed at multiday/weekly duration.

Environmental Impact

AirBattery has minimal land footprint,  does not require rare raw materials, does not consume water, and does not emit anything but fresh air- Contributing to a safer and cleaner energy supply.

Supply Chain

Onsite construction that is based on local  materials (steel, concrete and polymers) and labor- The AirBattery contributes to local economies where it is deployed.

For further information on AirBattery multiday energy storage

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