About

In [month] 2024, ESS Tech Inc. was awarded a $50M grant under a program administered by the U.S. Department of Energy and authorized by the Bipartisan Infrastructure Law. The grant will help fund Project Irongate, a major initiative to expand non-lithium, grid-scale battery manufacturing in the United States.

Earth-abundant materials – iron, salt, and water, 67% lower CO2 emissions than Li-ion, and components that can be recycled with today’s systems, all make iron flow batteries a key part of a sustainable energy transition.

ESS Energy Warehouse being installed

Project Irongate will

Increase IFB battery module manufacturing capacity over 50-fold at the company’s Oregon headquarters with the addition of 13 new automated manufacturing lines.

Expand system assembly and electrolyte production by relocating these operations to a second, existing site in the greater Portland-Vancouver metropolitan area.

Create over 1,700 quality new jobs

Achieve manufacturing scale and lower the production cost of iron flow batteries to deliver low-cost, long-duration energy storage.

Location map of the two Project Irongate facilities with callouts

Economic impact

ESS will leverage a $50M investment from the U.S. Department of Energy to deliver $120M of total investment in the greater Portland-Vancouver metropolitan area.

Energy Warehouse installed with solar

Build the U.S. clean technology supply chain

Over $1.5B annual impact nationwide.

Sourcing raw materials or components from 29 states.

Reinforce the domestic clean tech supply chain with 100% of upstream raw materials and 98% of ESS iron flow battery bill of materials sourced domestically by 2027.

I-5 crossing the Columbia River at night

Lowering costs

Decrease the per kWh cost for iron flow batteries by 83% by 2030.

Expanding jobs

Will directly create over 1,700 new, high-quality jobs with above-prevailing wages in addition to growing supplier/partner opportunities.

Community impact

Adults learning in a small group setting

Workforce development

Project Irongate will build the clean technology manufacturing workforce in the Portland metro region.

Partnerships with workforce organizations and other opportunities will ensure access to new jobs.

Volunteers planting trees

Community benefits agreements

Established community benefits agreements to support community and Justice40 priorities.

Partnerships to ensure an inclusive, community-informed CBA process.

ESS employee researching clean technologies

Health and safety

Investment in clean, safe and sustainable energy technologies with lower environmental impacts than competing technologies.