Meldahl Project - Complete Application Received

September 26, 2022: The Low Impact Hydropower Institute has received a complete application for Low Impact Certification of the Meldahl Hydroelectric Project.  LIHI is seeking public comment on this application.  Specifically, we are interested in knowing whether you think the Project meets the LIHI Low Impact Certification Criteria, as revised in the 2nd Edition Handbook.  Please review the program and criteria in LIHI’s revised Handbook and then review the Project’s application materials below.

Comments that are directly tied to specific LIHI criteria (flows, water quality, fish passage, etc.) will be most helpful, but all comments will be considered.  Comments may be submitted to the Institute by e-mail at with “Meldahl Project Comments” in the subject line, or by mail addressed to the Low Impact Hydropower Institute, 1167 Massachusetts Avenue, Suite 407, Arlington, MA 02476. Comments must be received on or before 5 pm Eastern time on November 25, 2022 to be considered.  All comments will be posted to the web site and the applicant will have an opportunity to respond.  Any response will also be posted.

Project Name Meldahl
LIHI Certificate No.
LIHI Certificate Term
Owner American Municipal Power, Inc.
State Ohio/Kentucky
Location River mile 436.2 on the Ohio River, Clermont County, Ohio/Bracken County, Kentucky
Installed Capacity 105 MW
Average Annual Generation 514,157 MWh
Facility Type Run of river
FERC No. P-12667 issued in 2008, expires 05/21/2058

The Captain Anthony Meldahl Lock and Dam is located  at the U.S. Army Corps of Engineers’ (USACE) existing Captain Anthony Meldahl Lock and Dam at Ohio River Mile 436.2 as measured from its source in Pittsburgh PA.  The existing USACE structure consists of a main lock, 1,200 feet long and 110 feet wide and an auxiliary lock, 600 feet long and 110 feet wide. The navigation locks are located on the Ohio (river right) bank. The dam was completed in 1964 and is a concrete fixed weir with 12 Tainter gates, each 100 feet long and 35 feet high above the sills. The dam is 1,752 feet in length. At the southern end of the gated section of the dam, there is a 372-foot-long concrete gravity overflow weir. The weir extends to the southern end of the gated section to the south bank of the Ohio River.

The Meldahl Hydroelectric Project began commercial operation in 2016 and is located on the Kentucky (river left) shore of the Ohio River, at the existing Lock and Dam Project. The hydropower plant includes:

  • A 210-foot-wide reinforced concrete powerhouse containing three 35-megawatt (MW) turbine generating units for a total installed capacity of 105 MW;
  • A 1,850-foot-long tailrace channel;
  • An approximately 5-mile-long, 138-kilovolt (kV) transmission line connecting the powerhouse to a new switching station adjacent to East Kentucky Electric Cooperative, Inc.’s Boone-Spurlock transmission line;
  • Recreation facilities and other appurtenant facilities.