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NEDO Demonstration Project on Redox Flow Storage Batteries Aiming for Successful Entry into California Wholesale Power Market

December 19, 2018

NEDO has been conducting a redox flow storage battery (RFB) demonstration project with Sumitomo Electric Industries, the project's entrusted party, in the U.S. state of California. On December 13, 2018, the demonstration project proceeded to its second stage where the operational system, expected to maximize revenues, will be verified. The project's pursuit of optimal RFB economic performance is aimed at ensuring successful entry into the wholesale power market operated by the California Independent System Operator.

In response to the large-scale introduction of renewable energy, California has mandated the installation of storage batteries by power utilities and the use of storage batteries is therefore increasing. The state is also exploring operational systems that work optimally with such batteries.

On December 3, 2018, before the start of the second stage of the demonstration project, nineteen guests were invited to observe a demonstration of Sumitomo Electric's RFB system at a plant operated by San Diego Gas and Electric, a local power utility. Guests attending the demonstration included California Energy Commission (CEC) Chair Robert Weisenmiller and other CEC representatives, as well as representatives from the California Public Utilities Commission (CPUC) and the Port of San Diego.

The Director of the NEDO Smart Community Department welcomed guests at the RFB demonstration by providing remarks that described the demonstration project's objectives and NEDO's role in the project.

  • Photo of CEC, CPUC , the Port of San Diego and other guests representatives observing demonstration system during plant tour
    CEC, CPUC , the Port of San Diego
    and other guests representatives observing
    demonstration system during plant tour
  •  Prior to plant tour, Director of NEDO Smart Community Department greeting guests
    Director of NEDO Smart Community Department greeting guests