Sperra
Updated: February 02, 2026
Jason Cotrell - Founder & CEO
Country: USA | Funding: $6.5M (+)
Founded: 2017
Website: https://sperra.com
Sperra manufactures subsea pumped-storage hydroelectric power plants integrated with offshore energy storage systems. The company has developed a multi-sphere "capsule" design, localized production using automated 3D concrete printing and integration with offshore renewable energy sources to share infrastructure and reduce costs. Sperra's SPSH systems consist of 2-5 MW modules in US ports using local materials and labor. They operate by moving water in and out of large concrete spheres on the ocean floor to store and release energy as needed. Modules can be installed independently along coastlines or adjacent to offshore wind farms to save money and generate additional revenue.
Founded: 2017
Website: https://sperra.com
Sperra manufactures subsea pumped-storage hydroelectric power plants integrated with offshore energy storage systems. The company has developed a multi-sphere "capsule" design, localized production using automated 3D concrete printing and integration with offshore renewable energy sources to share infrastructure and reduce costs. Sperra's SPSH systems consist of 2-5 MW modules in US ports using local materials and labor. They operate by moving water in and out of large concrete spheres on the ocean floor to store and release energy as needed. Modules can be installed independently along coastlines or adjacent to offshore wind farms to save money and generate additional revenue.
