Facility

REC Silicon Butte Polysilicon Plant

Operated by REC SiliconUS · Butte, Montanamanufacturing

Produces ~1,500 MT/yr of FBR granular polysilicon for semiconductor and solar applications. Operating at limited capacity. The only continuously operating US polysilicon facility in 2024. REC's Moses Lake, WA plant (18,000 MT/yr) has been idle since 2019 after Chinese tariffs blocked exports; DOE loan guarantees for restart under consideration.

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