WASHINGTON, D.C. – U.S. Senators Sherrod Brown (D-OH), John Thune
(R-SD) and Amy Klobuchar (D-MN), members of the Senate Committee on
Agriculture, Nutrition, and Forestry, sent a
letter to the
Environmental Protection Agency (EPA) requesting the EPA update its greenhouse gas modeling for biofuels and 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 – which will help policymakers,
companies, and consumers assess the ability of a given technology or feedstock
to reduce greenhouse gas emissions. Home-grown
fuels assessed by the GREET model will also help the U.S. reduce its reliance
on foreign oil.
“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 senators wrote. “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.”
The letter was also signed by U.S. Senators 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).
To read the full letter click here or below.
The Honorable Michael S.
Regan
Administrator
Environmental Protection Agency
1200 Pennsylvania Avenue, N.W.
Washington, D.C. 20460
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 greenhouse gas (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.
Sincerely,
###