What's Happening?
Sizable Energy, a startup co-founded by Manuele Aufiero, is pioneering a novel approach to energy storage by moving traditional pumped-storage hydropower technology to the ocean. This method involves using two sealed, flexible reservoirs connected by a plastic
tube and turbines, with one reservoir floating on the surface and the other anchored on the seabed. The system operates by pumping super salty water from the bottom to the top reservoir when electricity is cheap, and releasing it back down to generate power when needed. This innovative approach aims to overcome the limitations of land-based pumped hydro, which is constrained by suitable topography. Sizable Energy recently secured $8 million in funding to advance this technology, with plans to deploy several commercial projects by 2026.
Why It's Important?
The development of ocean-based energy storage by Sizable Energy represents a significant advancement in renewable energy integration and grid resilience. Traditional energy storage solutions, such as batteries and land-based pumped hydro, face limitations in scalability and cost. By utilizing the ocean, Sizable Energy can potentially mass-produce energy storage systems, reducing costs and increasing accessibility. This technology is particularly beneficial for offshore wind projects, as it can share electrical connections to the shore, further lowering expenses. The ability to store energy efficiently and at a lower cost could accelerate the transition to renewable energy sources, providing a more stable and resilient power grid.
What's Next?
Sizable Energy is currently testing a small model of its ocean-based reservoirs and plans to deploy a pilot of the floating components. The company aims to establish full demonstration plants and several commercial projects by 2026. As the technology progresses, it is expected to attract interest from renewable energy sectors, particularly offshore wind, due to its cost-effectiveness and scalability. The success of these projects could lead to broader adoption of ocean-based energy storage, influencing energy policies and investment in renewable infrastructure.
Beyond the Headlines
The shift to ocean-based energy storage raises important considerations regarding environmental impact and regulatory frameworks. While the technology offers a promising solution to energy storage challenges, it must be implemented with careful attention to marine ecosystems and compliance with international maritime laws. Additionally, the success of Sizable Energy's approach could inspire further innovation in renewable energy technologies, potentially leading to new industry standards and practices.
