Boston-based Free Flow Power Corp. (FFP) is seeking a license from the Federal Energy Regulatory Commission to develop a 9-MW hydroelectric project at the Grenada Dam on the Yalobusha River in Grenada County, Miss.
The applicant for this project is FFP Missouri 2 LLC, a domestic limited-liability company for which Free Flow Power is authorized to act as an agent. The application was filed on June 25.
The project will utilize the existing dam owned and operated by the U.S. Army Corps of Engineers (USACE). It will operate in a run‐of‐release mode.
FFP was issued a three-year preliminary permit for this project by FERC in December 2010.
The Grenada Lake Hydroelectric Project site is about 3.5 miles northeast of the town of Grenada, Miss. The primary purpose of the existing USACE facility is for flood control, and the facility also provides recreational opportunities for the public.
A new concrete powerhouse will 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 9,000 kW. Two new identical vertical Kaplan turbines will be installed in the powerhouse. The turbines will be direct-connected to identical 3-phase, 60-cycle synchronous generators.
The project will have an installed capacity of 9 MW, an average annual energy production of 31 gigawatt hours (GWh), and an average monthly energy production of 2.57 GWh.
A new substation will be constructed approximately 200 feet south of the existing outlet works and adjacent to an existing parking lot on the south side of the river channel. 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 Mississippi 333 Scenic Loop to an interconnection point at the utility-owned distribution line.