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AgSTAR

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

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

  • Approximately 248 anaerobic digesters are operating at commercial livestock farms in the United States. To find out more about these projects, explore the Livestock Anaerobic Digester Database.
  • In 2018, AgSTAR helped reduce GHG emissions by 4.27 million metric tons of CO2 equivalent (MMTCO2e):
    • 3.46 MMTCO2e direct emission reductions
    • 0.81 MMTCO2e emissions avoided

Greenhouse Gas Reductions Due to AgSTAR Programs

The chart below shows the amount of direct and indirect greenhouse gas emission reductions from anaerobic digesters on livestock farms from 2000 through 2018. The chart shows a steady increase through 2013 with an estimated total of 4.27 MMTCO2e in 2018.

 

Year Direct Reductions
(MMTCO2e)
Indirect Reductions
(MMTCO2e)
2018 3.455651068 0.812597296
2017 3.175414633 0.782160807
2016 3.14757268 0.82475967
2015 3.059843265 0.82761892
2014 3.039405452 0.816662297
2013 2.987245835 0.773893719
2012 2.591218135 0.674196876
2011 1.991814503 0.476485765
2010 1.639330528 0.37573007
2009 1.468957353 0.315447516
2008 1.35337091 0.274165632
2007 0.949279277 0.165602442
2006 0.863269624 0.120060226
2005 0.624855124 0.088739865
2004 0.463139642 0.065712661
2003 0.324474919 0.047273093
2002 0.275149123 0.039121338
2001 0.227956086 0.029423847
2000 0.10177904 0.012581513

In addition to these environmental benefits, AgSTAR has: