[0] Cattle manure [1] 8,500 [2] Based on manure excretion rate of cow [3] Using a resource that is generally regarded as a waste product with little to no value Using a resource that has undesirable environmental impacts if improperly managed Collection systems established for dairy manure Water and air quality improvement [5] Well suited for anaerobic digestion to generate electricity [4] 
Technology to convert manure to electricity is expensive Difficult for some agricultural producers to sell power to utilities due to economics and utility company collaboration