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Lark Response to Comments on “Environmental Outcomes of the US RFS” Study
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...
Washington Clean Fuels Standard – Carbon Intensity Model Peer Review
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...
Evaluation of Potential E15 Sales in California (2022 Study)
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...
Review of EPA Workshop on Biofuel Greenhouse Gas Modeling
EPA’s Biofuel Greenhouse Gas Modeling Workshop provided updates on ongoing research related to greenhouse gas (GHG) emissions associated with biofuels. Most of the material covered topics associated with land use conversion and...
Taheripour et al. Comments on Lark et al. 2022 RFS Study
Lark et al. (2022) recently published “Environmental Outcomes of the US Renewable Fuel Standard” and addressed domestic land use change (LUC) of corn ethanol and associated greenhouse gas (GHG) emissions that are...
Preliminary Comments on Lark et al. 2022 RFS Study
This memorandum provides Net Gain’s preliminary observations regarding Environmental Outcomes of the US Renewable Fuel Standard published by Lark et al. (2022). The work described in this paper appears to be the...
Current Methods for LCA of Low-Carbon Transportation Fuels in the United States (2022)
Greenhouse gas (GHG) emissions drive climate change. In the United States, transportation is the largest source of GHG emissions. Petroleum products account for about 90 percent of U.S. transportation fuels, with biofuels,...
Environmental Outcomes of the US Renewable Fuel Standard: Lark Study
The Renewable Fuel Standard (RFS) specifies the use of biofuels in the United States and thereby guides nearly half of all global biofuel production, yet outcomes of this keystone climate and environmental...
Comments to EPA on 2020-2022 RFS Rule: Stillwater
1 2022 Potential Ethanol Production EIA lists the U.S. ethanol nameplate production capacity for 2020 at 17.38 billion gallons per year. How much of this ethanol production capacity can be used is...
Review of GHG Emissions of Corn Ethanol under the EPA RFS2
Twelve years of experience and improved analysis methods have provided new insight into the life cycle greenhouse gas (GHG) emissions from corn ethanol. This study reviews the key factors that affect the...
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