Intensive monitoring was carried out to evaluate the performance of a full-scale innovative swine waste-to-energy system at a commercial swine farm with 8640 heads of swine. Detailed mass balances over each unit of the system showed that the system, which includes a 7600 m(3) anaerobic digester, a 65-kW microturbine, and a 4200 m(3) aeration basin, was able to remove up to 92% of the chemical oxygen demand ( COD), 99% of the biological oxygen demand ( BOD), 77% of the total nitrogen ( TN), and 82% of the total phosphorous ( TP) discharged into the system as fresh pig waste. The overall biogas yield based on the COD input was 64% of the maximum theoretical, a value that indicates that even greater environmental benefits could be obtained with process optimization. Overall, the characterization of the materials fluxes in the system provides a greater understanding of the fate of organics and nutrients in large scale animal waste management systems. (C) 2016 Elsevier Ltd. All rights reserved.