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Liquid Battery Storage

Utility Scale Flow Battery Storage

We’ve been in the business of storing rainwater underground for over 20 years with our patented product, Rainstore3. Its ability to harvest and store inert liquids such as mine-drilling water or liquid battery materials is a critical function within green energy efforts.

Our technology provides a proven liquid storage system that ranges from small to very large scale.

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Batterystorage Square
Rainstore3 4Packsidesquare

Products for Liquid Battery Storage

Rainstore3

Explore the many features and benefits of choosing Invisible Structures for your liquid battery storage project.

Rainstore3 for Utility Scale Flow Battery Storage benefits:

  • Modular and Stackable
  • 100% Recycled Chemically Inert Polypropylene Plastic
  • Exceeds H20 Loading Capacity (great under traffic areas and small
  • buildings)
  • 94% Void Space
  • Requires No Assembly
  • Hot or Cold Thermal Energy Storage Can Be Accommodated
  • Individual Storage Tanks Can Be Sized
  • Positive and Negative Tanks Can Be Easily Configured to Save and Maximize Space
  • Buried Storage Offers Greater Security


Compact and versatile, Rainstore3 units can be as shallow as 4″ and as deep as 7′ 9″. Battery contents with restriction criteria can be sealed within multiple layers of liners, with secondary containment and evacuation systems available, if needed.