Free Flow Power (FFP) told the Federal Energy Regulatory Commission on Aug. 28 that it is making progress on a 250-MW pumped storage hydro project in Oregon.
In December 2012, FERC issued a Preliminary Permit to FFP Project 111 LLC for the Lorella Pumped Storage Hydroelectric Project. This kind of permit gives a party three years to look at project feasibilty, with a license application needed at FERC if the decision is to proceed. Under the permit, project updates have to be filed every six months.
In the first six-month update on the progress of this project filed on Aug. 28, FFP acknowledged that this update is being filed after the required deadline for submission of the first progress report. “Future progress reports will be submitted in a timely fashion, and FFP regrets any inconvenience that has been caused by FFP’s failure in this instance,” the company added.
FFP is performing an evaluation of the Lorella project in order to determine its economic feasibility. Over the next six-month period, FFP said it intends to conduct diligence on several assumptions in its economic model in order to refine it and support decision-making regarding the economic feasibility of the proposed project.
FFP will begin the consultation process in support of the development of a pre- application document over the next several months.
The Lorella Pumped Storage Hydroelectric Project is to be located near the town of Klamath Falls in Klamath County, Ore. The proposed project would consist of:
- an upper reservoir with a surface area of 200 acres, formed by a 178-foot-high and 50-foot-high, rockfill earthwork impoundment, with a total storage capacity of 14,300 acre-feet at a water surface area of 5,523 feet above mean sea level (msl);
- a lower reservoir with a surface area of 400 acres, formed by a 50-foot-high, rockfill earthwork impoundment, with a total storage capacity of 16,900 acre-feet at a water surface elevation of 4,191 feet msl;
- 200-foot-wide spillways for both the upper and lower dams;
- a 1,500-foot-long, 38-foot-wide D-shaped tailrace tunnel;
- a 1,350-foot-deep, 24-foot-diameter vertical shaft to connect the upper and lower reservoir to the power tunnel;
- a 3,200-foot-long, 24-foot-diameter power tunnel to connect the shaft with four steel-lined penstocks, each 12 feet in diameter and 355 feet long;
- a 380-foot by 80-foot underground, reinforced concrete powerhouse containing a 250-MW reversible pump-turbine-generator, control systems, and ancillary equipment; and
- a 4-mile-long, 500-kV transmission line that would connect the project substation to the existing Pacific Intertie lines at the Captain Jack substation.
The annual energy output of this project would be approximately 1,600 gigawatt-hours.