The quest to commercialize a better breed of batteries for the next phase of the global energy transition is underway in a modest 250,000-square-foot factory 15 miles south of Portland, Ore. There, ESS Tech Inc. is producing the latest generation of its iron-based flow batteries on its first fully automated manufacturing line, the energy storage upstart’s template for achieving higher volumes and profitability over the next year.
“Imagine that footprint getting replicated all the way down the hallway,” CEO Eric Dresselhuys said on a recent factory tour. “We can get to about 2 GWh of annual manufacturing capacity in this building. As we get beyond that, we’re going to need to expand out of this building.”
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