ESS Inc. develops and manufactures long-duration iron flow batteries, including the Energy Warehouse™ (EW) and the battery-in-a-building Energy Center™ (EC). The EW targets commercial and utility-scale applications requiring 4+ hours of flexible energy capacity and offers 20+ years of operating life with no capacity fade. The company is shipping to customers on four continents. Founded in 2011 and led by CEO Craig Evans, ESS is focused on scaling production of its second-generation iron flow technology. The company intends to use the Series C proceeds to expand and automate its manufacturing process. The article reports ESS raised $30M in Series C funding.

Total raised

$30M

Funding rounds

1

Latest round

Series C

Latest activity

Oct 2019