A German manufacturer of long-duration energy storage systems that’s planning to test its products in Milwaukee later this year has announced another U.S. testing site.

The Phoenix pilot project, called Desert Blume, will use proprietary non-lithium battery technology from CMBlu Energy to store 5 megawatts of energy, mostly from solar generation during the daytime, for a 10-hour duration so that it can be released into the power grid during the night.

The energy storage capacity would be enough to power about 1,125 average homes for 10 hours in the Phoenix metro, said Salt River Project (SRP), the nonprofit electric utility in Tempe, Arizona, that partnering with CMBlu Energy AG, which is based near Frankfurt, Germany.

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