In the News

Senator Amy Klobuchar

Apr 5, 2022

WASHINGTON - U.S. Senators Amy Klobuchar (D-MN) and John Thune (R-SD) urged the Environmental Protection Agency (EPA) to update its greenhouse gas modeling for biofuels. Specifically, the senators requested the EPA adopt the Argonne National Lab’s Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model. These long-overdue updates would permit consistent comparison between petroleum-based fuels, natural gas systems, electric generation, and renewable fuels.

“We urge you to adopt Argonne National Lab’s Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) Model. Adopting the GREET Model will not only permit the federal government to further standardize its comparison of GHG emissions for biofuels like ethanol, biodiesel, and sustainable aviation fuel, but enable over 50,000 registered GREET users to more readily compare renewable fuels to other sources of energy,”the senators wrote to EPA Administrator Michael Regan. 

“We applaud EPA for reviewing and updating its GHG modeling resources in accordance with its obligations under the RFS to ensure that accurate and reliable data can remain central to policies concerning energy consumption and reducing emissions,”the senators continued.“We hope that EPA will use the GREET Model as its primary resource for determining lifecycle GHG emissions of biofuels, which could immediately contribute to ongoing efforts to reduce energy emissions.”

The letter was also signed by U.S. Sens. Sherrod Brown (D-OH), Dick Durbin (D-IL), Tammy Duckworth (D-IL), Joni Ernst (R-IA), Chuck Grassley (R-IA), Roger Marshall (R-KS), and Mike Rounds (R-SD).

Last February, Klobuchar and Thune introduced theAdopt GREET Act, bipartisan  legislation  that would require the EPA to update its greenhouse gas modeling for ethanol and biodiesel. Their bill would require the EPA to update its modeling every five years, or report to Congress to affirm its modeling is current, or otherwise explain why no updates were made.

Klobuchar has been a strong advocate for investing in renewable fuel infrastructure, increasing American biofuel production, and upholding the Clean Air Act’s Renewable Fuel Standard (RFS). She recently introduced  theHome Front Energy Independence Actwith Senator Joni Ernst (R-IA), bipartisan legislation to expand the availability and production of American biofuel, following President Biden’s ban on importing Russian oil.

In February, she and Senator Chuck Grassley (R-IA) led  a bipartisan letter urging the Environmental Protection Agency (EPA) to prioritize the Renewable Fuel Standard (RFS) by maintaining the blending requirements for 2022; denying all pending Small Refinery Exemptions (SREs); eliminating proposed retroactive cuts to the renewable volume obligations (RVOs); and setting 2021 RFS volumes at the statutory levels.

Klobuchar and Grassley also introduced  bipartisan legislation in December to provide certainty to biofuel producers by preventing the EPA from retroactively reducing RVO levels once finalized.

The full text of the letter is available HERE  and below:

Dear Administrator Regan:

We write in response to the decision by the Environmental Protection Agency (EPA) to review the scientific methodology and modeling used in the transportation sector pursuant to the Renewable Fuel Standard (RFS) to accurately ascertain the GHG emissions of land-based biofuels . In support of this effort and the need for stakeholders to have a consistent and well-vetted standard through which all biofuels may be compared, we urge you to adopt Argonne National Lab’s Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) Model. Adopting the GREET Model will not only permit the federal government to further standardize its comparison of GHG emissions for biofuels like ethanol, biodiesel, and sustainable aviation fuel, but enable over 50,000 registered GREET users to more readily compare renewable fuels to other sources of energy.

As presented during the March 1, 2022, EPA workshop, the GREET Model has provided annually updated lifecycle “well-to-wheels” analysis for an expanding universe of energy sources since 1995. Importantly, the GREET Model permits consistent comparison between petroleum-based fuels, natural gas systems, electric generation, and renewable fuels derived from a variety of technology pathways, accounting for the lifecycle carbon intensity of key farming inputs. We ask that EPA utilize the GREET Model as the baseline GHG determination for biofuels so that stakeholders may have the opportunity to readily compare the GHG intensity of competing energy sources and policymakers may have a fuller picture of how to decarbonize the energy and transportation sectors.

The GREET Model has been among the most widely utilized sources of GHG data, underpinning research that finds corn ethanol can currently achieve 46 percent lower lifecycle carbon intensity than gasoline. This environmental benefit will only increase as biorefining and fuel technologies improve, the agriculture sector advances operational efficiencies and produces higher yields of renewable feedstock per acre, and as biofuel operations are paired with carbon capture projects. Updated and consistent GHG modeling can provide a positive feedback loop that drives continued progress to lower carbon intensity at both the farm and fuel level. From “field-to-tailpipe,” the reduction of carbon intensity provided by biofuels deepens as consumers select higher blends of biofuels like E15, E30, E85, and B20 for their energy needs.

We applaud EPA for reviewing and updating its GHG modeling resources in accordance with its obligations under the RFS to ensure that accurate and reliable data can remain central to policies concerning energy consumption and reducing emissions. We hope that EPA will use the GREET Model as its primary resource for determining lifecycle GHG emissions of biofuels, which could immediately contribute to ongoing efforts to reduce energy emissions.

Thank you for the timely consideration of our request and your assistance to enable homegrown biofuels to serve as a solution to our nation’s growing energy challenges.

Read the original press release here

Renewable Fuels Association

Mar 31, 2022

Three in four American voters support expanding the availability of E15 as a way to replace petroleum imports from Russia, and more than 80 percent support increasing domestic renewable fuel production as a way to lower record-high gas prices, according to a recent nationwide survey  conducted by Morning Consult.

With national average gas prices hovering above $4 per gallon, 83 percent of the registered voters surveyed said they support increasing the domestic production of renewable fuels like ethanol as a way to bring down fuel prices, with 52 percent saying they “strongly support” such action. Since the beginning of March, ethanol prices have been nearly $1 per gallon lower than gasoline prices at wholesale terminals where gasoline is blended. Accordingly, blending higher levels of ethanol into gasoline brings down the price of the fuel sold to consumers at the pump.

Meanwhile, 72 percent of the survey respondents said they support increasing the availability of E15 as a way to replace oil imports from Russia. If E15 replaced just 30 percent of the E10 currently being sold in the United States, the nation could entirely replace the amount of gasoline supplied annually from Russian petroleum imports.

“These results shouldn’t come as a surprise to anyone, as E15 and other higher-ethanol blends are the lowest-cost fuels available anywhere in the market today,” said RFA President and CEO Geoff Cooper. “But unless the Biden administration acts immediately to allow summertime sales of E15, the cheapest fuel available at the pump will disappear on June 1 and Americans will be faced with another price hike. As this survey clearly shows, voters understand that using more American-made ethanol can immediately help bring pump prices down and enhance our nation’s energy security. At the same time, higher blends of ethanol reduce greenhouse gas emissions and tailpipe pollutants linked to cancer, heart disease, respiratory illness, and other health concerns.” 

Voters also expressed support for increasing the production of flex-fuel vehicles (FFVs), which can run on fuel containing up to 85 percent ethanol (E85), with 69 percent saying it is important for the U.S. government to incentivize automakers to increase FFV output. Flex fuels like E85 are currently selling at a 30-50 percent discount to regular gasoline, providing FFV drivers with an incredible opportunity to save money at the pump.

The poll showed that voters prefer increased domestic renewable fuel use to lower pump prices over increased domestic production or importation of crude oil. In fact, more than half of the survey respondents who expressed an opinion opposed increasing crude oil imports to lower pump prices.

“The implications of this polling data are clear: voters across the country want our nation’s leaders to act immediately to increase the production and use of low-cost, low-carbon renewable fuels like ethanol to bring down pump prices and help the environment,” Cooper said.

Finally, the Morning Consult survey showed that two-thirds of voters support the Renewable Fuel Standard, which requires renewable fuels to comprise an increasing share of the nation’s fuel supply each year.

Read the original story here.

Congresswoman Angie Craig

Mar 31, 2022

WASHINGTON, D.C. — Today, U.S. Representative Angie Craig led the six bipartisan Co-chairs of the Congressional Biofuels Caucus and 23 additional Members of Congress in a letter to President Joe Biden urging him to prioritize homegrown, renewable biofuels as a replacement for Russian energy sources. The letter comes after Congress banned the importation of Russian oil earlier this month. In their letter, the Members applauded the decision to ban imports of Russian oil and natural gas into the United States and argued that a renewed emphasis on renewable fuels would lower fuel prices for American consumers by more than $12 billion annually, generate substantial economic growth in rural communities and significantly decrease American dependence on foreign oil producers like Russia. 

The letter asks the President to consider directing the Environmental Protection Agency (EPA) to allow the summer sales of E15 this year and to direct the EPA to reverse course on proposed retroactive reductions to 2020 and 2021 Renewable Volume Obligations. As of today – and barring any action by Congress or the President – the summer sales of E15 in Minnesota and other states will be prohibited beginning on June 1, 2022 due to a D.C. Circuit Court  decision  on the Clean Air Act in July of 2021. 

“To ensure that this ban – and future actions that the U.S. may need to take to defeat Russian aggression – is economically sustainable for the American economy and American people, we urge you to consider the following actions that would prioritize homegrown and renewable biofuels,” the Members wrote. “Taken together, these actions would significantly increase U.S. energy independence, lower prices at the pump and ensure the continued success of our sanctions on the Russian economy.”

Actions to increase U.S. energy independence in light of Russian aggression are overwhelmingly supported by the American public. A recent Morning Consult poll indicated that 72% of Americans support increasing the availability of E15 as a way to replace Russian oil imports, and 83% of Americans support increasing domestic renewable fuel production – which includes renewable biofuels like ethanol and biodiesel – in the U.S. as a strategy to lower fuel prices.

“We thank these House members for encouraging President Biden to embrace domestic renewable fuels as a lower-cost, lower-carbon alternative to Russian oil imports,” said Renewable Fuels Association President and CEO Geoff Cooper. “E15 is typically selling for 20-30 cents per gallon less than regular gasoline right now; and as revealed by a new nationwide survey, three out of four voters support increasing the availability of E15 as a strategy for reducing pump prices and providing relief to American families. If the Biden administration fails to act on the straightforward request made by these Representatives, the lowest-cost fuel available at the pump today will disappear on June 1 and drivers will face another unnecessary price hike.”

“The message on both sides of the aisle remains loud and clear: to immediately offer relief at the pump and move toward a more secure energy sector, the Biden Administration must increase access to homegrown, low-carbon biofuels,” said Growth Energy CEO Emily Skor. “As gas prices hit their peak, higher blends of biofuels like E15 were selling for more than 50 cents cheaper per gallon at the pump in some areas of the country. Increasing access to lower-cost biofuels, through year-round E15 and robust RVOs, would offer these savings to more drivers and reduce our country’s dependence on foreign oil.”

“ACE members are incredibly grateful for the leadership being demonstrated by Rep. Angie Craig to spearhead this bipartisan letter urging the President to act now to allow E15 year-round and get the Renewable Fuel Standard back on track,” said Brian Jennings, American Coalition for Ethanol (ACE) CEO.“Ensuring year-round access to domestically-produced E15 for all parts of the country is the quickest way to address pain at the pump and make the U.S. more energy secure.”

“Corn farmers appreciate the bipartisan leadership of the House Biofuels Caucus and the 29 House Members who joined this letter asking President Biden to prioritize renewable fuels, like ethanol, when it comes to lowering prices for drivers and increasing our domestic energy supply,” said National Corn Growers Association (NCGA) President Chris Edgington. “Throughout this month, E15 has been priced around 10 to 40 cents less per gallon than regular, or E10, making ethanol the low-cost and low-emission solution the country needs now. However, unless the Biden administration or Congress act soon, drivers will lose retail access to lower-cost E15 on June 1. We urge continued bipartisan cooperation to keep this money-saving choice available.”

“Over the last two years, the more than 65,000 U.S. workers in the biodiesel and renewable diesel industry worked hard to maintain fuel supplies and provide value to consumers,” said Kurt Kovarik, Vice President of Federal Affairs at Clean Fuels Alliance America.” Clean Fuels and its members thank the members of the Biofuels Caucus – and especially Representatives Angie Craig, Rodney Davis, Cindy Axne, Dusty Johnson, Mark Pocan, and Adrian Smith – for prioritizing homegrown, clean fuels to boost America’s energy independence.”

You can find the full text of the letter  here  and below.

March 31, 2022

The Honorable Joseph R. Biden, Jr.
President of the United States
The White House
1600 Pennsylvania Avenue, NW
Washington, D.C. 20500

Dear President Biden:

Russia’s unjustified and brutal attack on Ukrainian sovereignty and Ukrainian citizens demands the type of unified domestic and international response that the United States has led over the past month. Given the Russian economy’s reliance on petroleum exports, banning the importation of Russian oil and natural gas into the United States was the right decision. 

To ensure that this ban – and future actions that the U.S. may need to take to defeat Russian aggression – is economically sustainable for the American economy and American people, we urge you to consider the following actions that would prioritize homegrown and renewable biofuels. Taken together, these actions would significantly increase U.S. energy independence, lower prices at the pump and ensure the continued success of our sanctions on the Russian economy. 

  1. Permanently reinstate the year-round availability of E15 by directing the Environmental Protection Agency (EPA) to use its authority pursuant to Section 211(c)(4)(C)(ii) of the Clean Air Act or by taking executive action to respond to a potential energy crisis triggered by Russian aggression on the international stage. 
  2. Support ethanol and biodiesel by directing the EPA to reverse its course on the proposed retroactive reduction to 2020 and 2021 Renewable Volume Obligations (RVOs) and adhere to the Renewable Fuel Standard’s (RFS) statutory obligations. 

Upholding the RFS and permanently reinstating the year-round availability of E-15 would lower fuel prices for hardworking Americans. Ethanol, biodiesel, and renewable diesel add to the nation’s fuel supply, lowering prices at the pump for nearly every consumer good that moves along the supply chain. Over the last decade, wholesale ethanol has saved consumers 17% when compared to wholesale gasoline. A recent report indicated that a nationwide shift to E15 could collectively save U.S. consumers more than $12 billion annually. And according to a recent World Agricultural Economic and Environmental Services (WAEES) study, availability of biodiesel and renewable diesel has saved consumers an average of 31 cents per gallon at the pump over the last ten years.

These actions would generate economic growth in rural communities that would reduce the impact of inflation on Americans’ pocketbooks. For example, ensuring the year-round availability of E15 would support an additional 182,600 jobs and generate an additional $17.8 billion in economic activity. Because ethanol production involves U.S. farmers and processing plants located in rural communities, these benefits would be most directly felt in rural America. 

Finally, these actions would significantly increase U.S. energy independence and lessen the domestic impact of our ban on Russian energy imports by replacing them with U.S. biofuels. For example, about 8% of U.S. imports of oil and refined petroleum products come from Russia. Ensuring the year-round sale of E15 would potentially replace up to 5% of the liquid petroleum-based gasoline in the U.S. transportation sector with homegrown biofuels. Protecting the RFS from retroactive reductions will ensure that biodiesel can fill liquid energy deficiencies created by trade and market instability. 

The American people and this Congress stand united in our resolve to support the Ukrainian people in the face of Russian aggression and imperialism. We will take the actions necessary to ensure democracy in Ukraine endures. Increasing domestic energy production is an important part of our effort to sustain sanctions on the Russian economy, and we urge you to increase U.S. energy independence and decrease 

Read the original press release here.

Brownfield Ag News

Mar 29, 2022

A bipartisan group of lawmakers is urging the administration to allow year-round sales of E15 to help combat rising domestic energy costs and reduce reliance on foreign energy sources.

Senator Sherrod Brown says “the best lesson here is we have to broaden our energy production and that means more E15 fuel.” 

The Ohio democrat tells Brownfield it’s critical to expand the availability of U.S. biofuels following the import ban on Russian oil.

“We have a lot of opportunities to broaden our energy inputs, which will stabilize prices and, frankly, will finally push Russian oil more off the world market,” he says. 

Brown, a senior member of the Senate Agriculture Committee, co-sponsored the recent letter to President Biden.

The senators say American biofuels are a clean and reliable energy solution that will help drive down fuel costs for consumers.

The letter was signed by a bipartisan group of senators including John Thune of South Dakota, Dick Durbin of Illinois, Tammy Baldwin of Wisconsin, Tammy Duckworth of Illinois, Joni Ernst of Iowa, Deb Fischer of Nebraska, Chuck Grassley of Iowa, Amy Klobuchar of Minnesota, Roger Marshall of Kansas, Jerry Moran of Kansas, Mike Rounds of South Dakota, Ben Sasse of Nebraska, Tina Smith of Minnesota, Debbie Stabenow of Michigan, and Kevin Cramer of North Dakota.

Read the original story here.

Renewable Fuels Association

Mar 28, 2022

Sales of E85 flex fuel in California surged to a new record in 2021, jumping 55 percent over 2020 levels and nearly doubling since 2018, according to new data  released by the California Air Resources Board (CARB). Last year, California drivers purchased nearly 62.5 million gallons (mg) of E85 flex fuel, a blend containing up to 85 percent ethanol and 15 percent gasoline, for use in flex-fuel vehicles (FFVs). That’s up from about 40 mg in both 2019 and 2020, and 33.8 mg in 2018.

The surge in California E85 sales has accelerated further in 2022, as record-high prices for regular E10 gasoline are driving greater demand for lower-cost, lower-carbon alternatives. In recent weeks, E85 has typically been priced 30-50 percent below gasoline at stations across the Golden State.

California is one of just a handful of states that reports annual E85 sales volumes, but Renewable Fuels Association President and CEO Geoff Cooper said it is safe to assume that California now leads the nation in consumption of low-carbon flex fuels.

“During this time of record-high gas prices and heightened concerns about climate change, California drivers are seeking out options at the pump that are both more affordable and better for the environment,” Cooper said. “E85 satisfies both of those consumer demands. This new data show that when the fuel is made available and marketed properly, FFV drivers will absolutely respond. The combination of the California Low Carbon Fuel Standard, federal Renewable Fuel Standard, and a concerted promotional campaign by innovative retailers proves that the so-called ‘ethanol blend wall’ is a fictional barrier that can be eradicated with smart policy and marketing efforts.”

California’s largest provider of E85 noted that the momentum witnessed in 2021 has continued to build in 2022. “Demand for E85 has been on the rise this year, with increases of over 20 percent from January to February, and we expect to see the same for March,” said Greg Jones, Director of Business Development at Pearson Fuels. “We always want to encourage motorists to check their gas caps to see if they're driving a flex-fuel vehicle, and we are seeing more and more Californians taking advantage of  our website  and mobile app to find E85 stations near them. Drivers are seeing a real difference and saving quite a bit of money. In addition to that, we're focusing on blending our E85 with renewable naphtha, resulting in a nearly 100 percent renewable fuel that is 60 percent lower in greenhouse gas emissions compared to unleaded gasoline. We believe E85 can play an important role for decades and has the opportunity to become a low carbon fuel option for the millions of drivers who own these vehicles.”

Data from the California Energy Commission  show that the number of FFVs on California roadways was nearly double the amount of electric vehicles at the end of 2020.

Read the original story here

Ethanol Producer Magazine

Mar 23, 2022

Legislation introduced in the Minnesota House of Representatives on March 17 aims to create a reimbursement program that would help fuel retailers install equipment compatible with higher blends of ethanol and biodiesel. The bill, tilted the Liquid Fuel Modernization Act, or HF 4328, is supported by the Minnesota Corn Growers Association.

Beginning on July 1, 2022, the bill would impose a liquid fuel modernization fee on the use of tanks that contain petroleum products. The rate of the fee would be set at $13 per 1,000 gallons, which equates to 1.3 cents per gallon. The fee would be in place through June 30, 2023.

Proceeds from the liquid fuel modernization fee would be used to reimburse eligible entities for a portion of the costs to acquire and install eligible fuel infrastructure. Reimbursements would be limited to 65 percent of total reasonable equipment and labor costs, with a cap of $800,000 per eligible entity each year. Applicants must use the eligible fuel infrastructure to offer higher blends of biofuel for sale at the retail fueling site or to store higher blends of biofuel at the bulk plant. Higher blends of biofuel are defined as gasoline blends containing more than 10 percent ethanol and diesel blends containing more than 20 percent biodiesel.

MCGA has spoken out in support  of the bill, noting it aims to provide the resources needed for infrastructure improvements enabling every fuel retailer in Minnesota to offer higher ethanol blends within the next decade. According to MCGA, the program would aim to reimburse $52 million annually for equipment replacements at fuel retailers.

A full copy of HF 4328 is available on the Minnesota Legislature website

Read the original story here

Ethanol Producer Magazine

Mar 22, 2022

Gevo Inc. has signed a take-or-pay agreement with Delta Air Lines Inc. to supply 75 million gallons of sustainable aviation fuel (SAF) per year for seven years. Based on current assumptions, including those around future pricing of commodities and the future values of certain environmental benefits, Gevo estimates that the agreement should generate approximately $2.8 billion of revenue, inclusive of the value from environmental benefits, for Gevo over the seven-year term of the agreement.

The agreement replaces the existing  agreement signed with Delta  in 2019 to purchase 10 million gallons per year and bolsters Delta’s commitment to incorporating SAF into its operations.

“On behalf of the entire team at Gevo, I want to congratulate our partners at Delta for their leadership in continuously pushing the aviation industry towards net-zero emissions. Delta makes for a great customer, recognizing that big change is needed. I also appreciate their faith in what we are doing at Gevo. Net-zero jet fuels matter. We expect production from our first Net-Zero plant to begin in 2025. To meet the demand that we now have under contract, we need to develop and build more than one Net-Zero plant. This is a happy problem to have,” said Patrick R. Gruber, Ph.D., Gevo’s CEO.

“Net-Zero Fuels are made by using low-carbon feedstocks produced with climate-smart agricultural practices and by eliminating fossil-based energy from the business system as much as possible. In addition, our customers depend on us to count carbon at every step of the process,” said Paul D. Bloom, Ph.D., Gevo’s chief carbon officer, and chief innovation officer. Bloom continued, “By accurately accounting for carbon emissions using Argonne National Laboratories GREET model along with our Verity Tracking platform we will provide confidence to our customers like Delta that scientifically robust and transparent methods are used to meet and measure their sustainability goals. We want to create a win-win value proposition for every participant in the SAF supply chain by tracking all carbon intensity benefits in our SAF.”

“SAF is a critically important lever we have available today to help our industry reduce the lifecycle carbon emissions from aviation fuel,” said Kelly Nodzak, Delta’s director of global jet fuel procurement. “That’s why we are working to develop the market and a broader understanding of the effectiveness of SAF, which can reduce lifecycle emissions up to 80 percent when used in pure form compared to fossil jet fuels.”

“With the right policies and incentives in place, we can unlock a future where sustainable aviation fuel is a viable climate solution that benefits air travel and beyond,” said Amelia DeLuca, Delta’s vice president of sustainability. “SAF production creates good-paying jobs in manufacturing, improves the environmental quality for all, and fosters rural economic opportunity for feedstocks and pathways. It will help us protect the planet we share and the places we call home.”

Gevo has remained focused on sustainability at every stage of production. Gevo has developed two alcohol-to-jet pathways that can utilize various low-carbon feedstocks grown using sustainable agriculture. These feedstocks can then be converted, in some cases, to high-value nutritional products and energy-dense liquid hydrocarbons, including SAF. Gevo’s production processes will incorporate renewable energy, including wind turbines, biogas, and combined heat and power systems (CHP) to increase efficiency and reduce carbon intensity to net-zero levels, which the customer can then pass on through the fuel.

The agreement is subject to certain conditions precedent, including Gevo developing, financing and constructing one or more production facilities to produce the SAF contemplated by the Agreement. A copy of the Agreement between Delta and Gevo has been filed with the U.S. Securities and Exchange Commission on Form 8-K.

Read the original story here

Renewable Fuels Association

Mar 22, 2022

An  important new assessment  published by experts from the Department of Energy’s Argonne National Laboratory, Purdue University, and the University of Illinois system found major flaws in a recent paper that made unfounded allegations about the greenhouse gas benefits of ethanol compared to gasoline.

Responding to the report Environmental Outcomes of the US Renewable Fuel Standard, which was led by Tyler Lark of the University of Wisconsin, the authors stated, “After a detailed technical review of the modeling practices and data used by Lark et al., we conclude that the results and conclusions provided by the authors are based on several questionable assumptions and a simple modeling approach that has resulted in overestimation of the GHG emissions of corn ethanol.”

Renewable Fuels Association President and CEO Geoff Cooper responded to the release of the assessment. “It has been well established that ethanol reduces greenhouse gas emissions by roughly half compared to gasoline. Unfortunately, a recently published report that attacked ethanol made headlines despite its obvious errors,” said Cooper. “Now that light has been shown on these flaws, we call on the news media to correct the record—particularly those who were so quick to report this now thoroughly debunked attack. Ethanol is a renewable, domestically produced fuel that is lower in cost and lower in carbon than gasoline. Today more than ever, it’s also vital for energy security.”

A number of problems with the study by Lark et al. were pointed out, including:

  • The land-use changes identified by Lark et al. likely reflect the conversion of fallow or idle land to crops rather than permanent grasslands.
  • Lark et al. likely overestimated soil organic carbon (SOC) loss by a factor of two to eight as a result of the incorrect application of carbon response functions. The authors noted that “the validation of the SOC emissions model used by Lark et al. … showed remarkably poor fit to measured SOC changes.” This is important, since a foundational assertion in the recent study was that emissions related to land-use change are higher than commonly recognized.
  • Lark appeared to have double-counted the emissions of nitrous oxide—a greenhouse gas—from the use of fertilizer in corn production by adding them in while overlooking the fact that they are already included in the corn-farming-related emissions in the main lifecycle assessment models.
  • Lark attributed 5.5  billion gallons of ethanol per year to the expanded Renewable Fuel Standard (RFS2) between 2008 and 2016 by comparing the volume under RFS2 and RFS1 without considering other significant drivers of ethanol production.
  • The validity of picking the limited time period of 2006-2010 to assess price impacts associated with RFS2 is questionable. This does not align with the 2008-2016 timeframe for the study by Lark et al., and significant price increases occurred during this period.

When the Lark paper was first published, RFA posted a  preliminary rebuttal  of the effort and noted  in a blog post  that the association had tried to work with Lark, but to no avail. “We asked how we could work together to ensure their error-ridden satellite analysis of land-use changes was grounded in reality,” Cooper wrote. “We never heard back from them. RFA is always open to having an honest, fact-based discussion about the impacts of ethanol and the RFS on the environment and economy.”

Read the original story here