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Accelerating Transportation Decarbonization: The Strategic Role of Ethanol Blends and Regulatory Incentives

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  • Eliseo Curcio

Abstract

This study evaluates ethanol blending as a practical near-term strategy for significant transportation decarbonization in the United States. Despite rapid growth in electric vehicle adoption, gasoline is projected to remain dominant, with annual demand around 135 billion gallons by 2035, necessitating immediate complementary solutions. Analysis indicates ethanol use will notably expand, driven by regulatory incentives such as RFS Renewable Identification Numbers (RINs) and IRA tax credits (45V), leading to potential market penetration of E15 at about 25% and E85 also expanding substantially. Ethanol derived from waste achieves notably lower carbon intensity at approximately 58.34 gCO2e/MJ, substantially better than conventional gasoline (~92 gCO2e/MJ), providing clear environmental advantages. Economic assessments show robust investor returns and local economic growth driven by policy incentives, including Renewable Identification Numbers (RINs) and IRA tax credits (45V). Infrastructure analysis confirms manageable costs and feasible adjustments for widespread adoption of higher ethanol blends.

Suggested Citation

  • Eliseo Curcio, 2025. "Accelerating Transportation Decarbonization: The Strategic Role of Ethanol Blends and Regulatory Incentives," Papers 2504.06278, arXiv.org.
    • Handle: RePEc:arx:papers:2504.06278
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    File URL: http://arxiv.org/pdf/2504.06278
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