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Energies 2017, 10(8), 1165; doi:10.3390/en10081165

An Economical Evaluation of Anaerobic Digestion Plants Fed with Organic Agro-Industrial Waste

1
Department of Economic, Engineering, Society and Business Organization (DEIM), Tuscia University, 01100 Viterbo, Italy
2
Department of Agriculture and Forestry Science (DAFNE), Tuscia University, 01100 Viterbo, Italy
*
Author to whom correspondence should be addressed.
Received: 26 May 2017 / Revised: 25 July 2017 / Accepted: 4 August 2017 / Published: 8 August 2017
(This article belongs to the Section Energy Sources)
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Abstract

Anaerobic co-digestion technology is increasingly used to simultaneously treat solid and liquid organic waste to balance nutrient content, to reduce the negative effects of toxic compounds in the process, and to increase biogas yield. The aim of this study was to analyze the economic performance of co-digestion plants fed with agro-industrial wastes as a function of installed power, with a method of discounted cash flow. The study focused on Italian framework conditions concerning payment for electricity produced by anaerobic digestion (AD) plants as well as the production costs. The economic analysis was carried out using three different plant sizes: 100 kW, 500 kW, and 1000 kW, which are representative of biogas plants in Italy. The study showed that the improvement of the break-point is closely linked to the increase in corresponding plant size. Given the assumptions of the simulation, the payback for the 100 kW plant was nine years for both the all-inclusive tariff and the basic feed-in tariff (BFT). Regarding the 500 kW and 1000 kW plants, the payback periods were five and four years, respectively. View Full-Text
Keywords: co-digestion; feed-in tariff; economy analysis co-digestion; feed-in tariff; economy analysis
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Carlini, M.; Mosconi, E.M.; Castellucci, S.; Villarini, M.; Colantoni, A. An Economical Evaluation of Anaerobic Digestion Plants Fed with Organic Agro-Industrial Waste. Energies 2017, 10, 1165.

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