Energy Secretary Jennifer M. Granholm, Senators Wyden and Merkley and Governor Brown Tour ESS Inc. Iron Flow Battery Manufacturing Facility

WILSONVILLE, Ore.–(BUSINESS WIRE)–ESS Inc. (NYSE: GWH), a leading manufacturer of long-duration iron
flow batteries for commercial and utility-scale energy storage applications,
today hosted Secretary Jennifer M. Granholm of the U.S. Department of Energy
(DOE), U.S. Senators Ron Wyden (D-OR) and Jeff Merkley (D-OR) and Oregon
Governor Kate Brown for a tour of its Wilsonville, Oregon facility and
headquarters. Employing 235 people and growing, ESS manufactures grid-scale
iron flow batteries which provide long-duration energy storage and enable the transition
to a decarbonized energy system.

The delegation
toured the rapidly expanding manufacturing operations of ESS’s innovative iron flow battery systems and met with ESS
employees. ESS technology was developed in the United States and is safe and
non-toxic, utilizes earth-abundant and domestically sourced iron, salt and
water for the electrolyte, and provides a more sustainable, safer and
lower-cost alternative to zinc, vanadium or lithium-ion energy storage

“You guys are
amazing. This is what keeps me up at night: How do we get long duration energy
storage?” said Secretary Granholm. “We need to get the word out – on my next
trip, I want to visit one of your sites where it’s actually being deployed.”

“Oregon is proud to
be a leader in clean energy, and companies like ESS are creating jobs and
building the economy of the future right here,” said Senator Wyden. “I’m proud
to have written the green energy provisions of the Inflation Reduction Act that
will position America as a global clean technology leader. There’s more work to
be done, but this week’s Senate vote takes a huge step forward to build an
energy economy that works for everyone.”

“I am proud that the
investments in the Inflation Reduction Act will help transition America to
clean energy and build high quality jobs,” said Senator Merkley. “Innovative,
long-duration energy storage technologies like ESS’s iron flow batteries, built
here in Oregon, can play a critical role in addressing the climate crisis and
decarbonizing our grid. The Inflation Reduction Act is the first step in
building a resilient, low-carbon energy system that delivers real opportunity
for Oregonians and Americans.”

“In Oregon, we are
seeing the impacts of the climate crisis firsthand. Commercial-scale battery
storage is a key part of moving Oregon towards a clean energy future,” said
Governor Brown. “The iron flow batteries being built by ESS Inc., are at the
cutting edge of long-duration, sustainable battery technology, and they are
being manufactured by workers right here in Oregon.”

“We are honored to
welcome Secretary Granholm, Senators Wyden and Merkley and Governor Brown to
our Wilsonville facility,” said Eric Dresselhuys, CEO of ESS. “We thank them
for their continued leadership and vital contributions to building a resilient,
decarbonized energy future for the United States. With their support, ESS is
working to accelerate deployment of domestically produced, sustainable
long-duration storage to decarbonize America’s grid, protecting the climate
while creating jobs and opportunities.”

ESS systems are made
in America by U.S. workers, with over 80% of the raw materials sourced through
a secure, domestic supply chain. By providing up to 12 hours of storage
capacity, ESS iron flow technology provides critical services needed as more
wind and solar are integrated onto the electric grid. In addition to grid
ancillary services such as frequency response and voltage regulation,
long-duration energy storage delivers solar peak shifting and energy demand
smoothing, allowing the grid to be powered by renewable energy 24/7.

About ESS Inc.
At ESS (NYSE: GWH), our mission is to accelerate global decarbonization by
providing safe, sustainable, long-duration energy storage that powers people,
communities and businesses with clean, renewable energy anytime and anywhere
it’s needed. As more renewable energy is added to the grid, long-duration
energy storage is essential to providing the reliability and resiliency we need
when the sun is not shining and the wind is not blowing.

Our technology uses
earth-abundant iron, salt and water to deliver environmentally safe solutions
capable of providing up to 12 hours of flexible energy capacity for commercial
and utility-scale energy storage applications. Established in 2011, ESS Inc.
enables project developers, independent power producers, utilities and other
large energy users to deploy reliable, sustainable long-duration energy storage
solutions. For more information visit