From the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy. Published May 2008.
The Northwest CHP (Combined Heat and Power) Application Center has a fact sheet that helps you ask all the right questions about installing a biodigester on your farm.
A Guide to Identifying Candidates for On-Farm and Centralized Systems. Produced by US EPA / AgSTAR.
From US EPA
Links:
[1] http://eetd.lbl.gov/ea/ems/reports/lbnl-275e.pdf
[2] http://www.chpcenternw.org/NwChpDocs/ChpBiopower_HaveYouAskedAllTheRightQuestions.pdf
[3] http://www.epa.gov/agstar/pdf/biogas recovery systems_screenres.pdf
[4] http://www.epa.gov/gasstar/pdf/unitconverter_final.pdf
[5] http://www.reenergizeamerica.org:8887/www.nrdc.org/air/transportation/biofuels/right.pdf
[6] http://www.reenergizeamerica.org:8887/www.nrdc.org/air/transportation/biofuels/track.pdf
[7] http://www.agmrc.org/agmrc/
[8] http://www.epa.gov/agstar/resources/handbook.html
[9] http://www.eere.energy.gov/afdc/
[10] http://attra.ncat.org/
[11] http://www.dsireusa.org/
[12] http://www.farmenergy.org
[13] http://www.dsireusa.org/library/includes/genericfederal.cfm
[14] http://www.epa.gov/grnpower/pubs/calcmeth.htm
[15] http://www.ethanolrfa.org/
[16] http://www.nass.usda.gov/Statistics_by_State/Ag_Overview/
[17] http://www.awea.org/projects/