ESS Inc.

1 of 5
Eric Dresselhuys, chief executive officer at ESS, Inc., looks inside a tank at the Wilsonville manufacturing plant, Feb. 1, 2023. ESS manufactures iron flow batteries used for long-duration storage. This type of energy storage is an important component in building renewable power grids that can balance demand supply and demand peaks.
Kristyna Wentz-Graff / OPB