Ess Tech, INC
Doing business as Ess Tech INC
At a glance
Employees100-499
In business since2011
Industry
HeadquartersWilsonville, OR
US patents234
SAM.gov UEIS6ZKYTZ14YC7
CAGE code6EZM3
Incorporated inDE
- data centers
- grids
- microgrids
- iron flow chemistry
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationManufacturer of Goods
Self-certified by the company in its SAM.gov registration
Patents
234 US patents granted 1994–2025, 60 of them in the five years to SEP 2025, including 1 design patent.
Electrical machinery, apparatus, energy 69Basic communication processes 67Audio-visual technology 49Computer technology 20Telecommunications 6
- Methods and systems for managing energy consumption of cryptocurrency miningUS 12,283,815 · granted APR 22, 2025
- Cost-efficient high energy density redox flow batteryUS 12,283,731 · granted APR 22, 2025
- Cost-efficient high energy density redox flow batteryUS 12,283,730 · granted APR 22, 2025
- Multi-stage rebalancing reactor for redox flow battery systemUS 12,266,829 · granted APR 1, 2025
- Electrode assembly for a redox flow batteryUS 12,255,370 · granted MAR 18, 2025
Newest 5 shown · Granted to Ess Tech, INC. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Ess Tech, INC | Wilsonville | OR | 100–499 | ACTIVE |
WARN Act notices
- Plant closing notice effective MAY 30, 2025 · 195 employees · Ess Tech, INC
Filed with the state under the federal WARN Act · WARN Act notices feed, CC BY 4.0
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.