Eos Energy Enterprises announced that its zinc-based battery Thorn Hill manufacturing facility in Marshall Township, Pennsylvania, is now online. Eos also operates a second manufacturing line in the Pittsburgh area. The two facilities are expected to reach 4 GWh of annual manufacturing capacity by the end of 2026.
“Battery Line 2 demonstrates our ability to continuously improve as we scale,” said John Mahaz, Chief Operating Officer of Eos. “We took the lessons learned from commissioning and operating Line 1 and incorporated them directly into the design of this facility and production line. The result is a more efficient manufacturing environment with better flow and a stronger foundation for future expansion. Most importantly, it validates that our manufacturing system can be replicated and scaled with discipline.”
Battery Line 2 in Marshall Township was designed using the operational experience and manufacturing insights gained from commissioning Line 1. The line incorporates single-piece flow architecture, enhanced process redundancy and advanced pick-and-place gantry systems designed to improve throughput and support more efficient production at scale.
The Thorn Hill facility itself was engineered to optimize manufacturing flow and productivity. Compared to Battery Line 1, the new layout reduces raw material travel by 86% and shortens overall production line length by 40%, improving material handling, reducing complexity and supporting higher operating efficiency.
Production operators are onsite at the Thorn Hill facility, and Line 2 has begun producing commercial batteries. The line will ramp throughout the year, with subassemblies coming online in the early third quarter and full production targeted in the fourth quarter of 2026.
News item from Eos
