From Bethlehem Steel to Solar Manufacturing
On the banks of the Ohio River, about 20 miles northwest of Pittsburgh, a steel plant that once supplied material for World War II naval vessels is now producing American-made steel components for large-scale solar energy projects.
Driven by surging energy demand from the rapid build-out of AI data centers, electrification, and a renewed focus on supply chain security, the nationwide expansion of clean energy manufacturing is increasing the need for domestically produced industrial materials — including the structural steel used in solar tracker systems.
In April 2022, Nextpower partnered with steel manufacturer JM Steel to reopen the historic Bethlehem Steel manufacturing plant in Leetsdale, Pennsylvania, producing torque tubes used in Nextpowerʼs solar arrays. Bethlehem Steel established the Leetsdale facility in 1904.

The plant sat largely dormant for decades, with dirt floors still visible as recently as 2022. Today, it has been rebuilt to manufacture steel components for solar energy projects nationwide, bringing new industrial activity back to a historic American steel town. The recent expansion increased the facility’s dedicated solar manufacturing lines to 4 GW of annual production capacity—enough to support millions of solar panels deployed each year.
“JENNMAR and Nextpower are in a powerful partnership focused on advancing the energy transition and American manufacturing… This is a win at the convergence of two industries that are pivotal to southwestern Pennsylvania — energy and manufacturing — and we’re proud that our region is a key part of the supply chain.” – Matt Smith, Allegheny Conference on Community Development
The partnership has since grown to include a major facility expansion in 2024 and the launch of a new steel production line in Sinton, Texas, supplying solar projects across the U.S.





