Sperra
Boulder
About Sperra
Sperra provides disruptive long-duration energy storage technology that integrates with offshore renewables to support high levels of renewable energy generation. Their M-PHES uses multiple large hollow concrete spheres on the seafloor to store mechanical energy in the form of pressure. They retain the benefits of conventional pumped hydro storage while vastly expanding potential deployment areas, shortening development time, and improving modularity.
Company Facts
- Operating status: Active
- Company type: For Profit
- IPO status: Private
- Employees: 11 – 50
- Estimated revenue: $1K – $10K
- Total funding: $6.5M
- Funding stage: Seed
- Last round: Grant (Dec 2025)
- Website: sperra.com
Industries & Categories
Clean Energy, Construction, Energy Storage, Renewable Energy
Social Profiles
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