RECLAMATION Managing Water in the West Draft Hydropower Resource Assessment at Existing Reclamation Facilities November 2010 This Page Intentionally Left Blank Hydropower Resource Assessment at Existing Reclamation Facilities Prepared by United States Department of the Interior Bureau of Reclamation Power Resources Office U.S. Department of the Interior Bureau of Reclamation Denver, Colorado November 2010 Mission Statements The mission of the Department of the Interior is to protect and provide access to our Nation’s natural and cultural heritage and honor our trust responsibilities to Indian Tribes and our commitments to island communities. The mission of the Bureau of Reclamation is to manage, develop, and protect water and related resources in an environmentally and economically sound manner in the interest of the American public. Disclaimer Statement The report contains no recommendations. Rather, it identifies a set of candidate sites based on explicit criteria that are general enough to address all sites across the geographically broad scope of the report. The report contains limited analysis of environmental and other potential constraints at the sites. The report must not be construed as advocating development of one site over another, or as any other site-specific support for development. There are no warranties, express or implied, for the accuracy or completeness of any information, tool, or process in this report. This Page Intentionally Left Blank Contents Hydropower Resource Assessment at Existing Reclamation Facilities Contents Page Executive Summary ................................................................................................................ ES-1 Chapter 1 Introduction ..................................................................................................... 1-1 1.1 Background ......................................................................................................................... 1-1 1.1.1 Federal Memorandum of Understanding for Hydropower ..................................... 1-2 1.1.2 Section 1834 of the Energy Policy Act of 2005 ..................................................... 1-2 1.1.3 State Renewable Energy Programs ......................................................................... 1-3 1.2 Purpose and Objectives ....................................................................................................... 1-3 1.3 Resource Assessment Overview ......................................................................................... 1-4 1.4 Public Input ......................................................................................................................... 1-5 1.5 Report Content .................................................................................................................... 1-5 Chapter 2 Hydropower Site Data Collection .................................................................. 2-1 2.1 Site Location and Proximity Data ....................................................................................... 2-1 2.2 Site Hydrologic Data......................................................................................................... 2-12 2.2.1 Flow ...................................................................................................................... 2-12 2.2.2 Net Hydraulic Head .............................................................................................. 2-14 2.3 Data Sources ..................................................................................................................... 2-14 2.4 Data Confidence Levels .................................................................................................... 2-15 2.5 Data Gaps .......................................................................................................................... 2-16 2.6 Site Data Summary ........................................................................................................... 2-17 Chapter 3 Site Analysis Methods and Assumptions ...................................................... 3-1 3.1 Power Production Potential................................................................................................. 3-2 3.1.1 Design Head and Flow ............................................................................................ 3-2 3.1.2 Turbine Selection and Efficiency ............................................................................ 3-2 3.1.3 Power Production Calculations ............................................................................. 3-11 3.2 Benefits Evaluation ........................................................................................................... 3-11 3.2.1 Power Generation .................................................................................................. 3-12 3.2.2 Green Incentives ................................................................................................... 3-14 3.3 Cost Estimates ................................................................................................................... 3-15 3.3.1 Construction Costs ................................................................................................ 3-16 3.3.2 Total Development Costs ...................................................................................... 3-16 3.3.3 Operation and Maintenance Costs ........................................................................ 3-18 3.3.4 Cost Calculations .................................................................................................. 3-18 3.4 Benefit Cost Ratio and Internal Rate of Return ................................................................ 3-19 3.5 Constraints Analysis ......................................................................................................... 3-20 3.5.1 Potential Regulatory Constraints .......................................................................... 3-21 3.5.2 Constraint Mapping .............................................................................................. 3-22 3.5.3 Local Information for Fish and Wildlife and Fish Passage Constraints ............... 3-22 i DRAFT – November 2010 Contents Hydropower Resource Assessment at Existing Reclamation Facilities Chapter 4 Hydropower Assessment Tool ....................................................................... 4-1 4.1 Model Software ................................................................................................................... 4-1 4.2 Model Components ............................................................................................................. 4-1 4.3 Model Usage ....................................................................................................................... 4-2 4.4 Application and Limitations ............................................................................................... 4-3 Chapter 5 Site Evaluation Results ................................................................................... 5-1 5.1 Great Plains Region ............................................................................................................ 5-2 5.1.1 Overview. ................................................................................................................ 5-2 5.1.2 Power Production .................................................................................................... 5-7 5.1.3 Economic Evaluation. ............................................................................................. 5-9 5.1.4 Constraints Evaluation .......................................................................................... 5-11 5.2 Lower Colorado Region .................................................................................................... 5-16 5.2.1 Overview. .............................................................................................................. 5-16 5.2.2 Power Production .................................................................................................. 5-17 5.2.3 Economic Evaluation. ........................................................................................... 5-17 5.2.4 Constraints Evaluation .......................................................................................... 5-18 5.3 Mid-Pacific Region ........................................................................................................... 5-21 5.3.1 Overview. .............................................................................................................. 5-21 5.3.2 Power Production .................................................................................................. 5-24 5.3.3 Economic Evaluation. ........................................................................................... 5-24 5.3.4 Constraints Evaluation .......................................................................................... 5-25 5.4 Pacific Northwest Region ................................................................................................. 5-29 5.4.1 Overview. .............................................................................................................. 5-29 5.4.2 Power Production .................................................................................................. 5-33 5.4.3 Economic Evaluation. ........................................................................................... 5-34 5.4.4 Constraints