Coal, Hydroelectric, Policy & Regulation, Pumped Storage Hydro, Renewables, Water Treatment

FERC terminates permit for 1,000-MW pumped storage project in Calif.

For failure to submit a timely six-month project update, the Federal Energy Regulatory Commission on Feb. 6 officially terminated a preliminary permit for a 1,000-MW pumped storage hydro project in California.

In April 2012, Don Pedro Hydro LLC was issued a preliminary permit to study the feasibility of the Don Pedro Pumped Storage Project. Article 4 of the preliminary permit requires that the company file a progress report at the close of each six-month period from the effective date of the permit. The permittee was notified on Oct. 21, 2013, that its progress report due on April 1, 2013, was overdue, and therefore, that the permit would likely be cancelled in no less than 30 days.

“The permittee did not file a response; therefore, the preliminary permit is hereby cancelled,” said the Feb. 6 order. “The preliminary permit is cancelled effective the close of business on March 7, 2014. But, if the Commission is closed on this day, then the permit is cancelled effective the close of business on the next day in which the Commission is open. No applications for this site may be submitted until after the cancellation is effective.”

Symbiotics LLC said in an October 2012 update, the first and last one filed under this permit: “The primary activity in the past six months has focused upon information retrieval and basic data research to assist in refining the project concepts and economic feasibility. The following six month period will continue this data acquisition process and begin research regarding sizing, major feature layout assumptions and costs based on existing information available at this time.”

The project was to be located at the existing Don Pedro Hydroelectric Project located on the Tuolumne River in Tuolumne County, Calif. The proposed project would have been a high head pumped storage facility consisting of: a new upper reservoir; a proposed intake structure; four penstocks; a new underground powerhouse with four 250-MW pump/turbines; flow exiting the powerhouse to be discharged into draft tubes and steel manifolds, which will transition into a tailrace tunnel to discharge into the lower reservoir; a lower reservoir, which would be the existing Don Pedro reservoir; and use of existing transmission lines.

The proposed project would have had an annual generation of 3,683 gigawatt-hours.

This article was republished with permission from GenerationHub.

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