long-duration energy storage

CMBLU Energy is a global deep tech company headquartered near Frankfurt, Germany, with operations across Europe and the United States and more than 250 employees. It builds SolidFlow long-duration energy storage systems, non-lithium water-based batteries offering 10+ hours of energy in a flexible, stackable modular system, serving utilities, grid operators, data centers, and commercial and industrial partners.

battery system manufacturing

GridFlow develops vanadium flow batteries for long-duration energy storage. Its water-based electrolyte makes the batteries fireproof, and systems are built to last with lifetimes upward of 25 years. The company positions vanadium flow as suited to stationary applications requiring fire safety, durability, and longevity, with electrolyte that is infinitely recyclable and lower levelized cost of storage than lithium.

vanadium flow battery technology

Joule is an emerging California-based startup developing patented ocean-based energy storage. Its Modulated Buoyancy Energy Storage (MBES) technology transforms the ocean into a battery, enabling long-duration storage at a fraction of the cost and footprint of traditional systems. The company holds USPTO Utility Patent US 12,012,923 B1 for a Modulated Buoyancy Energy Storage System, filed April 4, 2024 and granted June 18, 2024.

ocean-based energy storage