What's Happening?
Sizable Energy, a startup co-founded by Manuele Aufiero, is pioneering a new approach to energy storage by adapting pumped-storage hydropower technology for use in the ocean. This method involves two sealed,
flexible reservoirs connected by a plastic tube and turbines, with one reservoir floating at the surface and the other anchored on the seabed. The system utilizes super salty water, which is pumped from the bottom reservoir to the top when electricity is cheap. When energy demand rises, the water flows back down, spinning turbines to generate electricity. Sizable Energy has secured $8 million in funding to advance this technology, aiming to provide energy storage at a cost significantly lower than traditional grid-scale batteries. The startup plans to deploy several commercial projects globally by 2026, with each site capable of generating 6 to 7 megawatts of electricity per turbine.
Why It's Important?
The development of ocean-based pumped hydro storage by Sizable Energy represents a significant advancement in renewable energy technology. This innovation addresses the limitations of traditional land-based pumped hydro, which is constrained by geographical requirements. By moving the technology offshore, Sizable Energy can streamline production and deploy the system in various locations, enhancing the scalability of renewable energy storage. This approach not only supports the integration of intermittent energy sources like wind and solar but also contributes to grid resilience. The potential cost reduction in energy storage could make renewable energy more accessible and economically viable, benefiting both energy providers and consumers.
What's Next?
Sizable Energy is currently testing a small model of its reservoirs and plans to deploy a pilot of the floating components. The company aims to establish full demonstration plants and commercial projects by 2026. These developments could attract interest from offshore wind projects, as the technology can share electrical connections to reduce costs. Additionally, Sizable Energy's reservoirs could connect to any grid near deep waters, expanding the potential deployment sites. As the technology progresses, it may prompt further investment and collaboration within the renewable energy sector, potentially influencing energy policies and market dynamics.
Beyond the Headlines
The shift to ocean-based energy storage raises several ethical and environmental considerations. The impact on marine ecosystems and the sustainability of using super salty water are factors that require careful assessment. Additionally, the long-term viability of this technology depends on regulatory frameworks and societal acceptance. As renewable energy becomes more integrated into the global energy mix, innovations like Sizable Energy's could drive cultural shifts towards sustainable practices and influence public perception of renewable energy solutions.
