What's Happening?
The South Yuba River Citizens League (SYRCL) is urging the public to submit comments to the Federal Energy Regulatory Commission (FERC) by November 30, 2026, regarding a proposed 750-megawatt (MW) pumped storage hydropower project on Fish Creek. Fish Creek is a tributary
of the Wild and Scenic South Yuba River, located east of Nevada City. RamaFlux Sierra PSH LLC, a company recently formed, has filed an application with FERC for a preliminary permit to study the project. The proposed development would include two new dams and reservoirs, an underground powerhouse, new construction roads, and a new 230-kilovolt high-voltage transmission line that would traverse Sierra Nevada foothill forests. This project's generating capacity would exceed that of all existing hydropower projects in the Yuba River watershed combined, producing more than double the power of the Colgate Powerhouse. For comparison, Shasta Dam, which produces 710 MW, is built on a river with significantly greater flow than Fish Creek.
Why It's Important?
This proposed hydropower project carries significant environmental and regulatory implications for the region. The scale of the project, at 750 MW, suggests a substantial alteration to the local ecosystem, particularly for Fish Creek, which is only 1.5 miles long. The construction of two new dams and reservoirs, an underground powerhouse, and a new high-voltage transmission line through forested areas could lead to habitat disruption, changes in water flow, and potential impacts on the South Yuba River's 'Wild and Scenic' designation. The project's capacity, surpassing all current hydropower in the Yuba River watershed, highlights its potential to reshape the energy landscape of the area while raising concerns about the environmental cost. Public input to FERC is crucial as it allows community concerns regarding ecological preservation and sustainable energy development to be formally considered during the regulatory review process.
What's Next?
The immediate next step is the public comment deadline on November 30, 2026, for submissions to FERC regarding the preliminary permit application. Following this period, FERC will review the application and all submitted comments. The agency's decision on whether to grant the preliminary permit will determine if RamaFlux Sierra PSH LLC can proceed with detailed studies for the project. If the permit is granted, further environmental assessments and regulatory processes will be required before any construction can begin. Stakeholders, including SYRCL, environmental organizations, and local communities, will likely continue to monitor the project's progress closely and engage in subsequent stages of the FERC review process, potentially leading to further public hearings or opportunities for input.
Beyond the Headlines
The proposal for such a large-scale pumped storage hydropower project on a relatively small waterway like Fish Creek underscores broader tensions between energy demand and environmental conservation in the U.S. The 'closed loop' nature of the project, while often touted for its efficiency in energy storage, still necessitates significant infrastructure development and land alteration. This case highlights the ongoing challenge for regulatory bodies like FERC to balance the need for increased energy capacity, particularly from renewable sources, with the imperative to protect sensitive ecosystems and designated wild and scenic rivers. The outcome of this project could set precedents for how similar energy developments are evaluated in environmentally sensitive areas, influencing future energy policy and conservation efforts across the nation.













