Eos Energy stock rose after Eos Energy Enterprises, Inc. (NASDAQ: EOSE) started commercial production at Battery Line 2 on June 16 at its Thorn Hill facility in Marshall Township, Pennsylvania.
The company said the new line followed successful Site Acceptance Testing. It also said the launch moved Eos closer to its 4 GWh annual manufacturing capacity target for the end of 2026.
Investing.com reported that Eos shares rose 13% after the announcement, and the market data showed EOSE at $7.0198, up $0.6398, or 10.03%, at 13:31:07.
Eos said Battery Line 1 beat its full-year 2025 output in the first 164 days of 2026. Meanwhile, Battery Line 2 has begun producing commercial batteries, with subassemblies due in the early third quarter.
The company said the Thorn Hill layout cuts raw material travel by 86%. It also shortens the production line by 40% compared with Battery Line 1.
John Mahaz, chief operating officer of Eos, said the second line showed that Eos could replicate and scale its manufacturing system “with discipline.”
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Eos said Frontier Power USA’s 2 GWh capacity reservation agreement supports demand for its zinc-based long-duration energy storage systems. In May 2026, Frontier Power USA signed a transaction to acquire a 480 MWh battery project portfolio in Texas from Bimergen Energy.
In the United Kingdom, Frontier Power UK acquired rights to the Ayr and Busby projects in Scotland. Those projects are expected to use about 2.8 GWh of Eos Z3 Indensity systems under an April 2025 framework agreement.
Eos said Battery Line 2 will ramp through 2026. The company targets full production in the fourth quarter.
