Toyota Prices the 2010 Prius for the US Starting at $21,000
Auto Alliance on Mid-Level Ethanol Blends: Build Out E85 Infrastructure First

Group of Scientists and Economists Urge Inclusion of Indirect Land Use Change Effects for Biofuels and All Transportation Fuels in California LCFS

More than 170 scientists and economists have sent a letter to California Air Resources Board (ARB) Chairman Mary Nichols urging the board to account for greenhouse gas emissions from indirect land use change for biofuels and all other transportation fuels under the state’s proposed low carbon fuel standard (LCFS). The signatories include nine members of the National Academies of Science and two Nobel laureates.

During its meeting on 23-24 April, the Board will consider the adoption of the LCFS, which requires a 10% reduction in the carbon intensity (measured in gCO2e/MJ) of transportation fuels in California by 2020.

The LCFS as drafted proposes including indirect land use change enforcement against biofuels, although not for other transportation fuels. The proposed inclusion of ILUC is controversial. Last year, more than two-dozen advanced biofuel companies, joined by researchers and investors under the aegis of the New Fuels Alliance, submitted a letter to the California Air Resources Board (ARB) questioning ARB’s intent to include ILUC—or any kind of indirect effects enforcement against biofuels—as part of the regulation. (Earlier post.)

That letter, signed by 25 biofuel company executives and CEOs, investor Vinod Khosla, and Dr. Frances H. Arnold, noted that the biofuels industry generally supports indirect effects research, including its subset indirect land use change, but warns that enforcing indirect effects prematurely or in a piecemeal way would be catastrophic for advanced biofuel development.

The New Fuels Alliance emphasized that there are two distinct categorical problems with the draft regulation: (1) the public policy decision to enforce indirect effects of any kind is unprecedented, was not ordered by the Governor or the Legislature, and has not been publicly vetted; and, (2) the science of “indirect land use change” is extremely imprecise, and is therefore unreasonably dependent on the assumptions made by ARB staff.

The latest missive to Chairman Nichols argues:

We encourage you to investigate and include significant direct and indirect emissions from all fuels, including conventional petroleum, heavy oils, natural gas for transportation, oil sand-based fuels, and the range of fuels used to power electrified transportation, consistent with the best available science. However, you should not delay inclusion of known sources of emissions, including indirect emissions from biofuels, pending discovery of potential effects from other fuels.

There are uncertainties inherent in estimating the magnitude of indirect land use emissions from biofuels, but assigning a value of zero is clearly not supported by the science. The data on land use change indicate that the emissions related to biofuels are significant and can be quite large. Grappling with the technical uncertainty and developing a regulation based on the best available science is preferable to ignoring a major source of emissions. Over time, greater accuracy and detail in a more refined analysis can be reflected in future LCFS rulemakings.

The need to address uncertainties applies to other areas the analysis as well, and we urge you to evaluate the increasing use of nitrogen fertilizers and herbicides associated with greater biofuel production. In particular, nitrogen fertilizers enhance the emission of nitrous oxide—a powerful greenhouse gas in Earth’s atmosphere.

To spur innovation in low carbon fuels, the LCFS must send an accurate signal to the growing clean energy market. Strategic investment decisions should be based upon the best available data of the carbon footprint of alternative fuels. Failure to include a major source of pollution, like indirect land use emissions, will distort the carbon market, suppress investment in truly low carbon fuels, and ultimately result in higher emissions.


Will S

It wouldn't make sense to put on blinders and ignore all of the positives and negatives of indirect land use, so I certainly see the merit of this missive. Biofuel proponents would prefer to be given a free pass on this, but we can't go on pretending that there are no associated impacts.


Wonder why there's no mention of algae? Because it does not have land use impact??

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.


Post a comment

Your Information

(Name is required. Email address will not be displayed with the comment.)