About
At ESS Inc., our mission is to accelerate global decarbonization and to help the world reach net zero by 2050. We deliver safe, sustainable, flexible, long-duration energy storage that powers communities, industries, and businesses with clean, renewable energy anytime and anywhere it’s needed.
About ESS Inc.
ESS Inc. (NYSE: GWH) is the leading manufacturer of long-duration energy storage solutions using iron flow technology. ESS was established in 2011 with a mission to accelerate decarbonization safely and sustainably through longer lasting energy storage. Using easy-to-source iron, salt, and water, ESS technology enables energy security, reliability and resilience. We build flexible storage solutions that allow our customers to meet increasing energy demand without power disruptions and maximize the value potential of excess renewable energy.
Our technology is built by the brightest scientists and engineers in the energy industry to be inherently safe, sustainable and flexible. ESS technology is used around the world by utilities and C&I customers to enable reliable and resilient energy, make renewable baseload possible, and maximize value through the use of long duration energy storage.
Our history
2011
Company formed. Developed lab scale battery.
2012
Awarded ARPA-e grant for development of iron-based battery.
2014
Demonstrated 10,000+ operating cycles in the lab.
2015
First commercial deployment.
2017
Gen 1 Energy Warehouse™ product line launched.
2019
S200 commercial battery module launched.
2020
- Installed S200 automated assembly line.
- Energy Center™ product line launched.
2021
- Warranty backed by investment grade insurer, Munich RE, that covers every product, everywhere.
- ESS listed on New York Stock Exchange under ticker symbol GWH.
2022
- ESS achieves ETL certification to the UL 9540A standard.
- ESS launches in Europe to meet demand for LDES.
- Strategic Partnership with Energy Storage Industries – Asia Pacific to deploy LDES in Australia.
2023
- ESS achieves ETL certification to the UL 1973 standard.
- ESS achieves ETL certification to EL 9540 standard.
- Honeywell invests in ESS, launching global collaboration to advance iron flow battery market adoption.
- ESS recognized as leading American clean technology exporter by U.S. Department of Commerce.
2024
- Energy Center is first LDES solution to receive IEEE 693 rating demonstrating resilience against seismic events.
- ESS successfully “lifts” its first Energy Center.
- $50M Manufacturing expansion funded by the Export-Import Bank of the United States’ Make More in America Intiative.
Based in Wilsonville, Oregon and founded by a team with deep experience in fuel cells, electrochemistry, advanced material science, and renewable energy, ESS is an established player in the rapidly growing LDES market. We set out to change the world by developing safe and sustainable long-duration energy storage made with easy-to-source iron, salt, and water. Since 2011, our team of scientists and engineers have developed, rigorously tested, validated, and commercialized iron flow technology.
Today, our flexible storage solutions are making energy resilience and renewable energy baseload possible around the globe. With ESS, customers can meet increasing power demand without disruptions to maximize the value potential of excess energy.
Download the ESS Company Overview (PDF)