USW Members Celebrate Eos Energy Expansion

USW members joined with Eos Energy management and state and local officials on Oct. 21 to celebrate the company’s announcement that it would invest $353 million in a massive expansion of its zinc-based battery operations in Western Pennsylvania.

The Eos Energy expansion is expected to create more than 700 new jobs, significantly growing the USW’s 160-member work force at Eos. The company also announced that it would relocate its headquarters from New Jersey to Pittsburgh.

Pennsylvania Gov. Josh Shapiro and Eos CEO Joe Mastrangelo both credited the facility’s union work force, which joined the USW in September 2024, with improving the work environment at the facility.

“The Steelworkers have been a great partner to us, helping us grow and become more professional,” Mastrangelo said.

USW member RayNisha Addison, who came to work at Eos a year ago, said she struggled to make ends meet before landing her union job there.

“Growth is a great thing to see,” Addison said.

District 10 Director Bernie Hall said the partnership between the USW and Eos – which specializes in large-scale, long-term energy storage – is an example of what happens when labor, business and government work together toward a common goal.

“These are the jobs of the future,” said Hall. “And they are good, union jobs.”