Statkraft and Dutch startup Aquabattery have joined forces to develop the latter’s long-duration storage answer based mostly on saltwater.
The 2 corporations will check the storage know-how in a pilot venture for six to 12 months in Delft, the Netherlands. The target is to research the scalability of Aquabattery’s know-how and its industrial viability.
Aquabattery’s patented storage know-how makes use of saltwater as a storage medium. The tech is described as a move battery that is ready to independently amend energy (kW) and vitality (kWh) capability. It’s also mentioned to be low-cost, extremely scalable, and sustainable, because it makes use of solely water and desk salt, with its storage capability being expandable by simply including water reservoirs or utilizing bigger tanks.
The battery system makes use of three storage tanks, one with contemporary water, one with concentrated salt water and one with diluted salt water, and likewise depends on membrane stacks. In the course of the charging section, the diluted salt water is break up into concentrated salt water and contemporary water within the membrane stack and saved individually.
The separation is achieved via electrodialysis (ED), which is a separation course of through which charged membranes and electrical potential variations are used to separate ionic species from an aqueous answer and different uncharged parts.
Within the discharging section, the 2 streams are mixed and the ensuing vitality is transformed to electrical energy with the assistance of the membrane stack via reverse electrodialysis (RED), which is a know-how to generate electrical energy from the salinity distinction between two options, for instance, seawater and river water.
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