Turning Oceans into Batteries
Using only the physics of depth. Clean, scalable, revolutionary energy storage.
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Using only the physics of depth. Clean, scalable, revolutionary energy storage.
Joule is an emerging California-based startup developing the next generation of patented ocean-based energy storage — clean, sustainable, and designed to make renewable power reliable, dispatchable, and profitable at scale.
Our Modulated Buoyancy Energy Storage (MBES) technology transforms the ocean into a vast, untapped battery — enabling long-duration storage at a fraction of the cost and footprint of traditional systems.
Learn more about our technology →Multiple pathways to be part of the future of clean energy storage
Turn curtailed megawatt-hours into revenue. Partner with us to deploy pilot installations at your offshore facility.
Become a pilot partner →Help create the future of energy storage — we're looking for exceptional people ready to make an outsized impact.
View opportunities →Have questions about our technology or want to explore partnership opportunities? We'd love to hear from you.
Get in touch →