Several innovative technologies are being developed for pumped hydro storage (PHS), aiming to improve efficiency, reduce environmental impact, and enhance flexibility:
- Submersible Pump-Turbines and Motor-Generators: These are designed for improved efficiency and versatility, allowing for more effective energy storage and retrieval.
- Geomechanical PSH: This concept leverages geological formations to create underground reservoirs, offering potential cost savings and environmental benefits.
- Open-Pit Mine PSH: Utilizes existing open-pit mines to create PSH facilities, reducing the need for new land and infrastructure.
- Hybrid PSH Technologies: Integrates PSH with other renewable sources like wind or solar, enhancing overall system efficiency and flexibility.
- Underground PSH Using Tunnel Boring Machines (TBMs): Allows for the construction of PSH facilities in areas without traditional geographical features, using TBMs to excavate channels between aquifers. This approach can reduce construction time and costs.
- Modular Steel Dams: Enhances construction efficiency by building dams off-site and using prefabricated materials, potentially reducing costs and construction time by half.
- Modular, Closed-Loop, Scalable PSH Systems: Utilizes standardized components and membranes to create more accessible and cost-effective PSH systems, particularly suitable for small-scale applications.
- Variable Speed PSH: Offers greater flexibility in grid frequency support, improving the plant’s ability to stabilize the grid while generating or pumping.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-some-innovative-technologies-being-developed-for-pumped-hydro-storage/
