Investing in Methane Digesters on Pennsylvania Dairy Farms: Implications of Scale Economies and Environmental Programs
Investing in Methane Digesters on Pennsylvania Dairy Farms: Implications of Scale Economies and Environmental Programs
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投资宾夕法尼亚州奶牛场的甲烷消化器：规模经济和环境计划的影响
DOI：
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发表时间：
2008
影响因子：
1.3
通讯作者：
T. Richard
中科院分区：
文献类型：
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作者：
Elizabeth R. Leuer;J. Hyde;T. Richard
采用随机资本预算分析了净计量政策和碳信用额度对宾夕法尼亚州奶牛场厌氧消化器盈利能力的影响。我们分析了三种不同规模的农场——500头、1000头和2000头奶牛——并考虑在项目中添加固体分离器。结果表明，净计量政策和碳信用增加了消化池的预期净现值（NPV）。此外，添加固体分离器进一步提高了合资企业的平均净现值。一般来说，这项技术只对使用分离固体作为垫层材料的大型农场（1000头以上的奶牛）有利。
A stochastic capital budget was used to analyze the effect of net metering policies and carbon credits on profitability of anaerobic digesters on dairy farms in Pennsylvania. We analyzed three different farm sizes—500, 1, 000, and 2,000 cows—and considered the addition of a solids separator to the project. Results indicate that net metering policies and carbon credits increase the expected net present value (NPV) of digesters. Moreover, the addition of a solids separator further increases the mean NPV of the venture. In general, the technology is profitable only for very large farms (1, 000+ cows) that use the separated solids as bedding material.