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STATE UTILITY FORECASTING GROUP October 2020 State Utility Forecasting Group | Discovery Park | Purdue University | West Lafayette, Indiana 2020 INDIANA RENEWABLE ENERGY RESOURCES STUDY State Utility Forecasting Group Purdue University West Lafayette, Indiana David Nderitu Douglas Gotham Liwei Lu Darla Mize Tim Phillips Paul Preckel Marco Velastegui October 2020 Table of Contents List of Figures ................................................................................................................................ iii List of Tables ................................................................................................................................... v Acronyms and Abbreviations ........................................................................................................ vii Foreword……………………………… ………………………………………………. .............. .xi 1. Overview .............................................................................................................................. 1 1.1 Trends in renewable energy consumption in the United States ............................ 1 1.2 Trends in renewable energy consumption in Indiana ........................................... 6 1.3 Cost of renewable resources ............................................................................... 11 1.4 References ........................................................................................................... 15 2. Energy from Wind .............................................................................................................. 17 2.1 Introduction ......................................................................................................... 17 2.2 Economics of wind energy ................................................................................. 20 2.3 State of wind energy nationally .......................................................................... 24 2.4 Wind energy in Indiana ....................................................................................... 30 2.5 Incentives for wind energy ................................................................................. 37 2.6 References ........................................................................................................... 39 3. Dedicated Energy Crops ..................................................................................................... 43 3.1 Introduction ......................................................................................................... 43 3.2 Economics of energy crops ................................................................................. 48 3.3 State of energy crops nationally .......................................................................... 52 3.4 Energy crops in Indiana ...................................................................................... 54 3.5 Incentives for energy crops ................................................................................. 57 3.6 References ........................................................................................................... 58 4. Organic Waste Biomass ..................................................................................................... 61 4.1 Introduction ......................................................................................................... 61 4.2 Economics of organic waste biomass ................................................................. 63 4.3 State of organic waste biomass nationally .......................................................... 67 4.4 Organic waste biomass in Indiana ...................................................................... 71 4.5 Incentives for organic waste biomass ................................................................. 80 i 2020 Indiana Renewable Energy Resources Study 4.6 References ........................................................................................................... 81 5. Solar Energy ....................................................................................................................... 85 5.1 Introduction ......................................................................................................... 85 5.2 Economics of solar technologies ........................................................................ 88 5.3 State of solar energy nationally .......................................................................... 92 5.4 Solar energy in Indiana ....................................................................................... 95 5.5 Incentives for solar energy .................................................................................. 96 5.6 References ........................................................................................................... 98 6. Photovoltaic Cells ............................................................................................................. 101 6.1 Introduction ....................................................................................................... 101 6.2 Economics of PV systems................................................................................. 104 6.3 State of PV systems nationally ......................................................................... 108 6.4 PV systems in Indiana....................................................................................... 112 6.5 Incentives for PV systems................................................................................. 116 6.6 References ......................................................................................................... 117 7. Hydropower ...................................................................................................................... 121 7.1 Introduction ....................................................................................................... 121 7.2 Economics of hydropower ................................................................................ 124 7.3 State of hydropower nationally ......................................................................... 127 7.4 Hydropower in Indiana ..................................................................................... 131 7.5 Incentives for hydropower ................................................................................ 134 7.6 References ......................................................................................................... 135 ii 2020 Indiana Renewable Energy Resources Study List of Figures 1-1 Renewable energy consumption in the U.S. (1949-2019) .................................................... 2 1-2 U.S. energy consumption by source (1949-2019) ................................................................ 2 1-3 U.S. total energy consumption by energy source in 2019 .................................................... 3 1-4 Renewable electricity generation in the U.S. (1949-2019) .................................................. 4 1-5 U.S. electricity generation by source (1949-2019) ............................................................... 4 1-6 Net U.S. electricity generation by energy source in 2019 .................................................... 5 1-7 Renewables share of Indiana total energy consumption (1960-2018) ................................. 6 1-8 Renewables share of Indiana electricity generation (1990-2018) ........................................ 7 1-9 Wind energy capacity in Indiana .......................................................................................... 8 1-10 Average construction cost ($/kW) of generation installed in 2018 .................................... 12 1-11 Estimated generating technologies capital cost .................................................................. 13 1-12 Estimated generating technologies fixed and variable O&M cost ..................................... 14 1-13 Historic average levelized cost of energy from various technologies ................................ 15 2-1 Horizontal wind turbine configuration ............................................................................... 17 2-2 Estimated capital costs of various electric generation options ........................................... 20 2-3 Installed wind power project costs over time ..................................................................... 21 2-4 Generating technologies O&M costs.................................................................................. 22 2-5 Average O&M costs for available data years ..................................................................... 23 2-6 Wholesale energy value of wind ........................................................................................ 24 2-7 U.S. wind capacity growth ................................................................................................. 25 2-8 Renewable portfolio standards across the U.S. .................................................................. 26 2-9 Wind power capacity by state at the end of March 2020 (MW) ........................................ 27 2-10 100-meter U.S. wind resource map .................................................................................... 29 2-11 Wind energy capacity in Indiana ........................................................................................ 31 2-12 Indiana wind speed at 100 meters height ........................................................................... 35 2-13 Indiana wind speed