Research & Fact Sheets

We at Environmental Health & Engineering (EH&E) are a multi-disciplinary team of environmental health scientists and engineers with expertise in measurements, models, data science, lifecycle analyses (LCA), and public health. Members of...

EIA lists the U.S. ethanol nameplate production capacity at 17.38 billion gallons per year as of January 1, 2022. How much of this ethanol production capacity can be used is primarily a...

Ramboll and Net Gain Ecological Services have reviewed the Environmental Protection Agency’s (EPA’s) Proposed Renewable Fuel Standard 2023-2025 rule (the “Set Proposal” or “Proposed Rule”) and the accompanying Draft Regulatory Impact Analysis...

The Inflation Reduction Act (IRA) requires the calculation of greenhouse gas (GHG) emissions based on the GREET model for credit generation under Section 45Z. As specified in the Act: “The lifecycle greenhouse...

One of the most significant opportunities for both consumers and the ethanol industry lies in expanding demand by increasing use of higher blend levels. Since motor gasoline containing higher levels of ethanol...

For this program, two fuels, namely an E10 and E15, were tested on twenty 2016 and newer modern gasoline fueled vehicles over triplicate Federal Test Procedure (FTP) cycles. The E10 fuel was...

We recently reviewed the article published by Lark et al. (2022) in PNAS, detected various problematic assumptions, approaches, data, and results in that study. Based on our findings, we concluded that these...

Taheripour et al. recently posted comments on their websites about our peer-reviewed study published in the Proceedings of the National Academy of Sciences (Lark et al. 2022). In their commentary, the authors...

This peer review was conducted in support of Washington State Department of Ecology’s rulemaking for a new rule, Chapter 173-424 WAC, Clean Fuels Program Rule. As part of this peer review, the...

Blending ethanol into gasoline provides a variety of benefits for consumers, the environment, and the U.S. economy more generally. Domestically produced ethanol has largely replaced other fuel additives (which may be harmful...