Sperra products

Subsea Energy Storage

Sperra - Subsea Pumped Hydroelectric Energy Storage System

Sperra Subsea Pumped Hydroelectric Energy Storage is an innovative technology designed to enhance renewable energy integration, particularly with offshore wind and solar plants. Addressing the critical need for Long-Duration Energy Storage (LDES), it employs large concrete spheres placed on the ocean floor, using water movement to store and release energy. This subsea system can be utilized independently along coastlines or in conjunction with offshore energy installations, allowing for significant cost savings and new revenue streams. Key features include a patented multi-sphere 'pod' design and local manufacturing through automated 3D concrete printing, reducing costs by streamlining construction processes. With modules ranging from 2 MW to 5 MW, the system is constructed using locally sourced materials, boosting domestic employment. It enhances grid resiliency by creating new offshore storage sites and offers environmental benefits like minimal land disruption and resilience to climate-related challenges. This aligns with the goals identified by multiple national energy authorities to support decarbonization strategies.