Great River Energy procures 1 MW/150 MWh long-duration energy storage device from Form Energy

June 09, 2020
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by Tim Grejtak
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Minnesota electricity cooperative Great River Energy is procuring a 1 MW/150 MWh energy storage system from long-duration energy storage developer Form Energy. This represents Form Energy's first commercial application of long-duration energy storage technology, though it's unclear whether the device Great River Energy will install is the aqueous polysulfide-air flow battery system described in 2017. More likely, given the energy storage, this is Form Energy's other technology, an iron-air battery with a replaceable metal electrode. Clients should view this development as an early pilot in long-duration energy storage with a motivated customer and continue to research other technology options to enable similar capabilities.

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