Energy Resources seeks permit on 8-MW hydro project on Mississippi River

Energy Resources USA Inc. applied Sept. 2 to the Federal Energy Regulatory Commission for a preliminary permit for the 8-MW Lock and Dam No 22 Hydroelectric Project on the Mississippi River.

The project will be located on the Mississippi River at navigation mile 301.2, about seven miles southeast of Hannibal, in Ralls County, Missouri. The project will utilize the existing dam, the lock and dam was completed in 1938 and is owned and operated by the U.S. Army Corps of Engineers for the purposes of navigation.

A preliminary permit allows three years of exclusivity for feasibility work on a project, with a license application then needed to advance the project further.

The project would include a new reinforced concreted powerhouse, 90 feet by 220 feet in plan, that will be constructed downstream of the existing overflow bank adjacent to the right riverbank. The new tailrace will connect the powerhouse to the river downstream.

Four vertical Kaplan turbine-generators rated at 2 MW each will be installed in the new powerhouse for a total capacity of 8 MW. A 10 MVA 4.16/115 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.

The applicant has identified existing transmission infrastructure in the proposed project area. These existing transmission elements will be evaluated during the permit period through field investigations and discussions with the local utility. It is anticipated that the project will utilize a single overhead three phase, 115-kV line which is approximately 6.54 miles in length, extending northeast from the substation and following the existing access road to where it continues to the potential interconnection point. The potential interconnection point is an existing T-line 115 kV.

The estimated average annual production is 66.4 GWh. The hydraulic head used for estimating capacity and energy output is 7.71 feet. The turbines and generators will be newly manufactured for the project.

A project contact is: Ander Gonzalez, Energy Resources USA Inc., 2655 Le Jeune Road, Suite 804, Coral Gables, Florida 33134, +34 93 252 38 40,

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.