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Table 1 Main results when maximizing different profits for biogas supply network with smaller capacity (1 ± 0.1 MW in average electricity production)

From: Optimization of biogas supply networks considering multiple objectives and auction trading prices of electricity

 Max PEconomicMax \( {P}^{Economi{c}^{+ GHG}} \)Max PSustainability b
Feedstock (t/y)
 Corn grain7488748811,820
 Corn silage//14,354
 Corn stover510551058059
 Poultry bedding93559355/
 Poultry manure2236223625,505
 Poultry slurry//25,463
Total feedstock21,94921,94985,200
Products
 Electricity (MWh/y)8386836823,968
 Heat (MWh/y)5955595517,378
 Digestate (23% dry solids, t/y)13,35313,39948,749
 Corn grain (direct product)7239723911,424
Water (t/y)
 Purchased32303230213
 Recycled11,50311,50346,438
Utilities required (MWh/y)
Electricity “recycled”5315482092
Electricity purchased185168/
Heat “recycled”170017004968
Heat source purchased///
Sustainability item ($/y)
 Economic profit− 548,346−548,452−2,323,475
 Eco-profit− 113,681321,2692,802,824
 Social profit77,45677,456230,344
 Sustainability profit− 584,572− 149,728709,692
 Economic+GHG profit−500,291− 498,191−2,157,453
CO2 eq. emissions (t/y)a− 1807− 1890− 6241
 Selected SiteIII, II, III
 Dry matter content (%)131312.06|11.97|11.91
 Methane content (%)56.1856.1855.87|56.36|56.92
  1. aavoided GHG emissions
  2. b if not specified for each biogas supply network separated, results present the sum from both networks