1. U.S. Department of Energy. Alternative Fuel Data Center, https://afdc.energy.gov/fuels/ethanol_feedstocks.html.
2. Renewable
Fuel Association
(RFA). Annual Ethanol Production, https://ethanolrfa.org/markets-and-statistics/annual-ethanol-production.
3. U.S. Ethanol Plants. Ethanol Producer Magazine, http://www.ethanolproducer.com/plants/listplants/US/Operational/All/ (as of December 13, 2021).
4. U.S. Department of Agriculture’s
National Agricultural Statistic Service (NASS). https://www.nass.usda.gov/.
5. Renewable
Fuel Association. Feedstocks and Co-Products
Grain Usage,
Co-Product Output & Ethanol Yield, https://ethanolrfa.org/markets-and-statistics/feedstocks-and-co-products.