AgSTAR Accomplishments

Since its inception in 1994, AgSTAR has made meaningful progress reducing greenhouse gas (GHG) emissions in the agriculture sector. Through outreach, education, training and other tools, AgSTAR continues to support anaerobic digestion of livestock waste.

Anaerobic digestion of livestock waste reduces GHG emissions in two ways:

  • Methane emissions are directly reduced as biogas is captured and used as a renewable fuel.
  • The energy generated displaces the use of fossil fuels, further avoiding the emission of GHGs and other pollutants.

Recent AgSTAR Accomplishments

“AgSTAR is a tremendous resource to the Nebraska Methane Workgroup. The program serves as a valuable conduit of information to connect states facing similar issues, and this has been particularly helpful.”
Joe Francis
May 2015

  • Approximately 247 anaerobic digesters are operating at commercial livestock farms in the United States. To find out more about projects that are under construction, operating or shut down, explore:
  • In 2014, AgSTAR helped reduce GHG emissions by 1.20 million metric tons of CO2 equivalent (MMTCO2e)
    • 0.98 MMTCO2e direct emission reductions
    • 0.22 MMTCO2e emissions avoided

2014 AgSTAR GHG Emission Reductions

AgSTAR GHG Energy Use Equivalent 20141.20 MMTCO2e reductions are equivalent to the energy used by 109,489 homes in one year
Greenhouse Gas Equivalencies Calculator

EPA’s Greenhouse Gas Equivalencies Calculator provides other GHG equivalencies.

Greenhouse Gas Reductions Due to AgSTAR Programs

AgSTAR Program Accomplishments (2000-2014)Column chart illustrating AgSTAR's accomplishments in directly and indirectly reducing greenhouse gas emissions from 2000 through 2014.  The chart shows a gradual increase each year with direct GHG reductions of 0.98 MMTCO2e in 2014 and indirect GHG reductions of 0.22 MMTCO2e in 2014.

In addition to these environmental benefits, AgSTAR has: