In Washington, an analysis conducted by the Renewable Fuels Association and released March 7 finds the net energy balance of corn-based ethanol at U.S. dry mill biorefineries averages 2.6–2.8, an improvement over previous estimates, reflecting efficiency gains.
The figures build on USDA’s recent findings of a 2.1–2.3 net energy balance. RFA’s own analysis uses more current dry mill energy use data than the recent USDA study, which explains why the RFA results are approximately one-third higher than USDA’s findings.
