Pittsburgh energy storage company Eos Energy Enterprises said it will consolidate its battery manufacturing operations at Thorn Hill, its production facility in Warrendale, Pa.
Eos said it began commercial production at the 432,000-square-foot production facility in June 2026, and will now consolidate all of its battery manufacturing into a single site to shorten material flow and improve production processes and manufacturing efficiencies. Eos said it expects the consolidation to reduce costs by between 10 and 15 percent. Once both lines are operating, the facility capacity is expected to be approximately 4 GWh.
“We built our manufacturing foundation in Turtle Creek, and we have outgrown the footprint we started with. Bringing battery manufacturing together at Thorn Hill gives us the space and capacity we need for the next phase of growth while keeping jobs, investment and opportunity right here in Allegheny County,” Eos CEO Joe Mastrangelo said. “We are now moving forward with the plan described to investors in August, subject to required approvals.”
The 250 employees impacted by the consolidation, including the 205 union-represented employees, will be provided with employment opportunities or work-location assignment at Thorn Hill, Building 200 or the company’s corporate offices, officials said.
“Turtle Creek is where this company started, and we remain committed to that community,” Michelle Buczkowski, chief commercial officer at Eos, said. “Every employee impacted by this move will have a job offer or a location assignment waiting for them. The Commonwealth and the County worked alongside us to find a path that kept manufacturing and jobs in Allegheny County. That kind of partnership is a big reason Southwestern Pennsylvania is where Eos continues to grow.”