
The Diesel Emission Reduction Act (DERA) is a federal program administered by the U.S. Environmental Protection Agency (EPA) with the goal of lowering emissions from older diesel engines. Diesel engines, while critical to the nation’s transportation and freight systems, are also significant contributors to air
pollution. Their emissions include nitrogen oxides (NOx), particulate matter (PM), and other pollutants that can negatively impact public health and the environment.
Through the program, fleets may adopt a variety of fuel alternatives and engine technologies that meet verified standards for emission reductions. Options include:
- Biodiesel and Renewable Diesel: Fuels derived from renewable resources that reduce greenhouse gas emissions compared to conventional diesel.
- Electricity: Battery-electric vehicles and equipment that produce zero tailpipe emissions.
- Compressed Natural Gas (CNG): A lower-emission alternative to diesel that can reduce both NOx and PM.
Fleets interested in accessing DERA funding can submit an application to the American Lung Association, which manages the application process in collaboration with the EPA. Email DERAprojects@lung.org for application assistance.


