PUC已批准Form Energy为Xcel Energy建造一个10 MW/1 GWh的铁-空气长期储能设施。该项目计划在舍本县发电厂原址上进行建设。舍本县发电厂是密西西比河沿岸的一座规模超2.2 GW的燃煤发电厂，现将被该项目取代。 Xcel计划在2024年年中启动建设 ，目标是在2025年年中使实现并网。公司提交给公用事业委员会的项目建议书被大规模编辑过，对公众隐瞒了许多细节，包括具体的成本信息等。考虑到公用事业委员会的“公共”性质，这颇具讽刺意味。 根据文件披露的信息，项目位于棕地/煤场，根据《美国通货膨胀消减法案》，该项目将有资格额外获得10%的税收抵免。文件还暗示，该项目还可能有资格获得10%的国内税收抵免，Form Energy已承诺确保其产品的资格。在最近的发展中，Form Energy宣布将在西弗吉尼亚州建立工厂。
明尼苏达州公用事业委员会提供的另一份文件显示，Form Energy在其为进展较慢的剑桥能源站提供的一份白皮书（文件编号ET-2/RP-22-75）中，为财务建模工具成本投入提供了见解（参见下方表格）。据Form Energy估计，在“全部资本成本”下，铁-空气储能硬件的成本介于每千瓦1700美元至2400美元之间，每年的运营成本为19美元/千瓦。
虽然由于其独特的特性（100小时的电池容量），硬件成本要高出二至三倍，但Form Energy预计其运营成本将不到8小时锂离子电池的一半。
表1：投入设定与场景总结
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