German energy utility E.ON is using battery storage technology to equalise the feed in of renewables to transmission networks in the US.

The company will install and operate a 10 MW battery to equalize the feed-in of renewable energy to the transmission network operated by regional energy provider, Tucson Electric Power. The battery will be charged by an associated E.ON-owned solar park with a 2 MW capacity.
E.ON building
This partnership with Tucson Electric Power is set to run for a period of ten years and is scheduled to begin in the first half of 2017. In the meantime, E.ON, in collaboration with Greensmith Power, a provider of storage solutions, will prepare a technical design and incorporate the battery, named the “Iron Horse”, into the net.

The battery will be sited at the University of Arizona Science and Technology Park, Tuscon.

The battery is based on lithium titanate technology, rendering it capable of handling rapid charging and discharging. In contrast to a conventional solution based on coal or gas, the battery offers the advantage of being able to react quickly to fluctuations in the network.

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