Production costs and operative margins in electric energy generation from biogas : full-scale case studies in Italy
Articolo
Data di Pubblicazione:
2014
Citazione:
Production costs and operative margins in electric energy generation from biogas : full-scale case studies in Italy / C. Riva, A. Schievano, G. D'Imporzano, F. Adani. - In: WASTE MANAGEMENT. - ISSN 0956-053X. - 34:8(2014), pp. 1429-1435. [10.1016/j.wasman.2014.04.018]
Abstract:
The purpose of this study was to observe the economic sustainability of three different biogas full scale plants, fed with different organic matrices: energy crops (EC), manure, agro-industrial (Plants B and C) and organic fraction of municipal solid waste (OFMSW) (Plant A). The plants were observed for one year and total annual biomass feeding, biomass composition and biomass cost (€Mg-1), initial investment cost and plant electric power production were registered. The unit costs of biogas and electric energy (€Sm-3biogas, €kWh-1EE) were differently distributed, depending on the type of feed and plant. Plant A showed high management/maintenance cost for OFMSW treatment (0.155€Sm-3biogas, 45% of total cost), Plant B suffered high cost for EC supply (0.130 €Sm-3biogas, 49% of total cost) and Plant C showed higher impact on the total costs because of the depreciation charge (0.146€Sm-3biogas, 41% of total costs). The breakeven point for the tariff of electric energy, calculated for the different cases, resulted in the range 120-170€MWh-1EE, depending on fed materials and plant scale. EC had great impact on biomass supply costs and should be reduced, in favor of organic waste and residues; plant scale still heavily influences the production costs. The EU States should drive incentives in dependence of these factors, to further develop this still promising sector.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Agriculture; Anaerobic digestion; Biogas; Energy crops; Organic waste; Renewable energy
Elenco autori:
C. Riva, A. Schievano, G. D'Imporzano, F. Adani
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