Free Flow Power (FFP) applied on Nov. 13 for a license from the Federal Energy Regulatory Commission to develop a 14.6-MW hydroelectric project at the Sardis Dam on the Little Tallahatchie River in Panola County, Miss.
The applicant for this project is FFP Missouri 2 LLC, for which Free Flow Power is authorized to act as an agent.
The project will utilize the existing dam owned and operated by the U.S. Army Corps of Engineers. The project will operate in a run‐of‐release mode and, as such, will not alter or adversely affect current or future Corps operations. However, by utilizing this structure, FFP will develop a new renewable energy resource for the region that will have minimal environmental effects, the company said.
FFP was issued a three-year preliminary permit for this project by FERC in December 2010, which expires on Nov. 30, 2013.
The FERC licensing process is officially initiated by the filing of the Pre-Application Document (PAD) and a Notice of Intent (NOI), which in this instance, seeks to obtain an initial 50-year FERC license for the development and operation of the proposed hydroelectric project. The PAD for this project was filed with the FERC on Jan. 31, 2012.
The project would include a new concrete powerhouse to be built on the north bank, downstream of the existing stilling basin adjacent to the river channel and contain two identical turbine-generator units having a combined installed capacity of 14.6 MW. Two new identical vertical Kaplan turbines will be installed in the powerhouse.
A new substation will be constructed about 350 feet south of the existing outlet works at the toe of the dam. Project output will be transmitted from the powerhouse to the new substation via a buried medium-voltage cable. A new overhead transmission line will extend southeast from the substation along Highway 315 to an interconnection point at the utility owned distribution line.
The project will have an installed capacity of 14.6 MW, an average annual energy production of 52 gigawatt hours (GWh) and an average monthly energy production of 4.33 GWh. The annual energy production will vary from year to year due to variations in rainfall and Corps water releases.
“Power generated by the Project will be available to meet demand of the Tennessee Valley Authority (TVA) sub-region within the Southeast Electric Reliability Corporation (SERC), one of the regional entities of the North American Electric Reliability Corporation (NERC),” said the application. “The Project will be owned and operated by the Applicant and energy (and capacity as applicable) will be sold under a power purchase agreement to an entity such as TVA, utility company, aggregator, or other such wholesale purchaser of electric generation.”