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Mandates force US to import more biodiesel and renewable diesel

May 7, 2014
Last year, total US imports of biomass-based diesel fuel (biodiesel and renewable diesel) reached 525 million gallons, compared to 61 million gallons in 2012, according to the US Energy Information Administration (EIA). By all indications, that trend will continue.

Last year, total US imports of biomass-based diesel fuel (biodiesel and renewable diesel) reached 525 million gallons, compared to 61 million gallons in 2012, according to the US Energy Information Administration (EIA). By all indications, that trend will continue.

Two principal factors drove the increase in US biodiesel imports: growth in domestic biodiesel demand to satisfy federal and state renewable fuels targets, and increased access to biodiesel from other countries. As a result, the United States switched from being a net exporter of biomass-based diesel in 2012 to a net importer in 2013 by a wide margin.

The strongest driver of the resurgence in US biomass-based diesel demand was the increasing Renewable Fuel Standard (RFS) target. Both biodiesel and renewable diesel qualify for the biomass-based diesel and advanced biofuel targets, as well as the overall RFS target. The total RFS target increased from 15.20 billion gallons in 2012 to 16.55 billion gallons in 2013. The biomass-based diesel and advanced biofuels targets increased from 1.00 billion gallons to 1.28 billion gallons, and from 2.00 billion gallons to 2.75 billion gallons, respectively.

Biomass-based diesel fuels have higher energy content compared with ethanol, and thus generate more Renewable Identification Number (RIN) credits per gallon of fuel produced. In addition, renewable diesel meets the same American Society for Testing and Materials (ASTM) standards as petroleum diesel, and is thus not subject to the blending limits imposed on biodiesel.

What's the difference between biodiesel and renewable diesel? Biodiesel refers to fatty acid methyl esters produced by a chemical reaction between vegetable oils or animal fats and alcohol (transesterification), and is most commonly blended with petroleum diesel in up to 5% by volume or 20% by volume (B5 and B20).

Renewable diesel refers to a diesel-like fuel that is compatible with existing infrastructure and in existing engines in any blending proportion. It is produced by refining vegetable oils or animal fats using a hydrotreating process.

Biomass-based diesel fuels also qualify for the California Low Carbon Fuel Standard (LCFS). The LCFS sets annual carbon intensity (CI) targets for fuel providers, to reduce the carbon content of gasoline and diesel fuels through 2020. Fuels with low CI values generate credits for fuel providers that can offset any deficits that they accumulate from fuels with higher CI values. Depending on the feedstock and the method of production, both biodiesel and renewable diesel have some of the lowest CI values among eligible fuels, and thus are valuable fuels for meeting LCFS targets.

Increased domestic biodiesel production only partially offset the effect that increased US biodiesel consumption had on driving up imports. US biodiesel production reached 1.34 billion gallons in 2013, a 35% increase over 2012, including a record 135 million gallons in December.

This increase in production during 2013, especially the record levels near the end of the year, was driven in part by favorable blending economics by way of the $1 per gallon biodiesel blending tax credit, which expired on December 31, 2013. Given the elimination of the tax credit, soybean feedstock constraints, and limited renewable biodiesel production capacity, US imports of biomass-based diesel fuels are likely to continue to play an important role in meeting the LCFS and the RFS targets going forward.

Last year's increase in imports of regular biodiesel were primarily from Argentina, particularly in the final four months (September to December 2013). This likely resulted from a recent European Union antidumping duty imposed on biodiesel from Argentine producers in late 2013. The European Union was previously the destination for most of Argentina's biodiesel exports. The remaining volumes of regular biodiesel imports entered the United States on the East Coast (PADD 1) and Gulf Coast (PADD 3) from Indonesia and various European countries. US renewable diesel imports reached 210 million gallons in 2013, eight times more than in 2012. Just over 77% of total US renewable diesel imports came from Singapore and entered the United States on the West Coast (PADD 5), likely for California LCFS compliance.

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