Department of Process and Plant Technology. Brandenburg University of Technology (BTU) Cottbus-Senftenberg, Platz der Deutschen 1, Cottbus, 03046, Germany.
Department of Process and Plant Technology. Brandenburg University of Technology (BTU) Cottbus-Senftenberg, Platz der Deutschen 1, Cottbus, 03046, Germany; Chemical and Environmental Bioprocess Engineering Group, Natural Resources Institute (IRENA), University of León, León, 24071, Spain.
J Environ Manage. 2021 Dec 15;300:113788. doi: 10.1016/j.jenvman.2021.113788. Epub 2021 Sep 22.
Profitability studies are needed to establish the potential pathways required for viable biomethane production in the Brandenburg region of Germany. This work study the profitability of a potential biomethane production plant in the eastern German region of Brandenburg, through a specific practical scenario with data collected from a regional biogas plant located in Alteno (Schradenbiogas GmbH & Co. KG). Several parameters with potential economic influence such as distance of the production point to the grid, waste utilization percentage, and investment, were analyzed. The results illustrate a negative overall net present value with the scenario of no governmental investment, even when considering trading the CO obtained throughout the process. Subsidies needed to reach profitability varied with distance from 13.5 €/MWh to 19.3 €/MWh. For a fixed distance of 15 kms, the importance of percentage of waste utilization was examined. Only 100% of waste utilization and 75% of waste utilization would reach profitability under a reasonable subsidies scheme (16.3 and 18.8 €/MWh respectively). Concerning the importance of investment, a subsidized investment of at least 70% is demanded for positive net present values. Besides, the sensitivity analysis remarks the energy consumption of the biogas upgrading stage, the electricity price, and the energy consumption of biogas production as major parameters to be tackled for the successful implementation of biogas upgrading plants. The results here obtained invite to ponder about potential strategies to further improve the economic viability of this kind of renewable projects. In this line, using the CO separated to produce added-value chemicals can be an interesting alternative.
需要进行盈利能力研究，以确定在德国勃兰登堡地区实现可行的生物甲烷生产所需的潜在途径。本工作通过对位于 Alteno 的一个区域沼气厂（Schradenbiogas GmbH & Co. KG）收集的数据的具体实际方案，研究了在德国东部勃兰登堡地区建设潜在生物甲烷生产工厂的盈利能力。分析了几个具有潜在经济影响的参数，如生产点与电网的距离、废物利用率和投资。结果表明，在没有政府投资的情况下，即使考虑到在整个过程中交易获得的 CO，整体净现值仍然为负。达到盈利所需的补贴随与电网的距离而变化，从 13.5 欧元/兆瓦时至 19.3 欧元/兆瓦时不等。对于固定的 15 公里距离，考察了废物利用率的重要性。只有 100%和 75%的废物利用率在合理的补贴计划下才能盈利（分别为 16.3 和 18.8 欧元/兆瓦时）。关于投资的重要性，需要至少 70%的补贴投资才能获得正的净现值。此外，敏感性分析指出沼气升级阶段的能源消耗、电价和沼气生产的能源消耗是成功实施沼气升级工厂的主要参数。这里得到的结果促使人们思考进一步提高这类可再生项目经济可行性的潜在策略。在这方面，利用分离出的 CO 生产增值化学品可能是一个有趣的选择。
