Energy Resources USA Inc. applied June 18 to the Federal Energy Regulatory Commission for a three-year preliminary permit for the 20-MW W.D. Mayo Lock and Dam Hydroelectric Project, which would use the existing W.D. Mayo Lock and Dam structure on the Arkansas River in LeFlore and Sequoyah counties, Oklahoma.
The existing project facilities are owned and operated by the U.S. Army Corps of Engineers (USACE) Tulsa District.
This project would consist of four vertical Kaplan turbine-generators rated at 5 MW each, to be installed in a new powerhouse for a total capacity of 20 MW. A 25 MVA 4.16/69 kV three-phase step-up transformer will be located adjacent to the powerhouse in a new, 50-foot wide by 60-foot long substation. The substation will also contain high side and low side disconnects and will be surrounded by a containment dike and a security fence.
It is anticipated that the project will utilize a single overhead three phase, 69-kV line which is approximately three miles in length, extending northwest from the substation and following the existing access road to N4745 Rd where it continues to the potential interconnection point. The potential interconnection point is an existing T-line 69 kV.
The estimated average annual production is 141.4 Gwh. The hydraulic head used for estimating capacity and energy output is 20.5 feet. The turbines and generators will be newly manufactured for the project.
This preliminary permit would allow three years of exclusive time for the company to look at project feasibility, with a license application then needed if the decision is to advance the project further.
A project contact is: Ander Gonzalez, Energy Resources USA Inc., 2655 Le Jeune Road, Suite 804, Coral Gables, Florida 33134, email@example.com.