Obermeyer Hydro’s novel pumped-storage hydro (PSH) system reduces geological risks primarily by simplifying the construction process associated with traditional PSH installations. Here are key ways it achieves this:
- Reduced Excavation Volume: The system requires only the construction of a vertical shaft to position a submersible pump-turbine/motor-generator. This contrasts with the larger, more complex underground caverns needed in traditional PSH systems, which can be susceptible to geological surprises like unexpected rock formations or groundwater issues.
- Elimination of Underground Powerhouse: By using a shaft instead of an underground powerhouse, the system eliminates the need for extensive underground excavation. This reduces the complexity and associated risks such as tunnel collapses or unexpected rock conditions, which can lead to high costs and delays.
- Simplified Site Requirements: By lowering the geological complexity and reducing excavation needs, the Obermeyer system can be more easily deployed at a wider range of sites. This opens up more potential locations for PSH development, as fewer constraints are placed on the geological makeup of the site.
Overall, the design significantly mitigates geological risks by reducing both the volume and complexity of underground construction required for PSH systems.
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