With the lithium ion energy storage option from Germany-based BMZ private and commercial solar system operators have the ability to inexpensively store solar energy during the day, then use it in their own homes or businesses as needed. The new storage system, designated ESS 9.0, has a rated capacity of 8.5 kilowatt hours and a lower specific price than its little brother, the ESS 7.0. Otherwise, it retains all the features for a BMZ energy storage system (ESS): up to 300 ampere discharge currentflexible and expandable. Up to twelve, a units can be switched in parallel, a multi-level safety conceptand emergency power supply and off-grid option.
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