What Explains the Increased Utilization of Powder River Basin Coal in Electric Power Generation?
探讨过去二十年电力生产中粉河盆地煤炭利用率提高的原因，发现铁路运费下降和电厂弹性需求比环境政策贡献更大。
Abstract This article examines possible explanations for increased utilization of Powder River Basin (PRB) coal in electric power generation that occurred over the last two decades. Did more stringent environmental policy motivate electric power plants to switch to less polluting fuels? Or, did greater use of PRB coal occur because relative price changes altered input markets in favor of this fuel. A key finding is that factors other than environmental policy such as the decline in railroad freight rates together with elastic demand by power plants were major contributors to the increased utilization of this fuel.