Before the entry of ethanol and wind in the 2000s, woody biomass had been the main source of renewable energy in Indiana, comprising over 80 percent of the total renewable energy. This has since changed, with biofuels becoming the largest source of renewable energy, supplying 46 percent of the renewable energy consumed in 2019, followed by wind energy contributing 29 percent. Wood and wood waste contributed 19 percent, geothermal and solar 2 percent each.

The 2021 Indiana Renewable Energy Resources Study has been prepared by the State Utility Forecasting Group, Purdue University. This report represents the nineteenth annual study of renewable resources in Indiana performed by the State Utility Forecasting Group. It is an annual study on the use, availability, and economics of using renewable energy resources in Indiana.

The complete report can be accessed here