New Powerhouse Project

Twin Falls

Industry: Hydro/Power Generation

Project Scope

The Owner received a FERC License Amendment and other approvals, authorizing the design and construction for the re-development of their Hydroelectric Project. The existing facility includes a powerhouse with three 1,248-kilowatt (kW) generating units and two 1,200-kW generating units, for a total installed capacity of 6,144-kW. The facility also includes a combination of earthen and concrete dams and radial gated spillways to form the impoundment.

Based on a series of feasibility studies and investigations, the Owner determined that the optimum redevelopment plan was to construct a new 9-megawatt (MW) capacity powerhouse with two 4.5-MW SAXO turbines and an addition of a new three-bay radial gateway spillway.

The project delivery approach focused on: Integrated project operations by Owner, Engineer, and Contractor; total capital budget based project goal and detailed financial control; value based engineering, procurement and construction decision process; effective risk management process and contingency control; and use of cellular sheet pile structures for temporary cofferdam and permanent closure dam.

Project Stats

  • Power Generation: 9MW with 2 x 4.5 MW SAXO Turbines
  • 37,000 Cubic Yards of Rock Excavation and 15,000 Cubic Yards of Concrete
  • 700 Tons of Rebar
  • 360 Tons of Sheet Pile for 7 – 30’ Diameter Cofferdam Cells
We wanted to let you know how pleased we were with your crew. The installation was seamless and did not interfere with our production. Your employees were exceptional and easy to work with.
Manufacturing Customer