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INDIVIDUAL FACILITIES AND SELECTED SOURCES
Below is basic information about individual facilities in our database and selected sources we've drawn on to support the analysis.  To navigate to other sites, use the search page.

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Butte Silane Facility

REC Silicon

Butte, MT, USA

-112.688409245718, 45.9699094806952

The Big Green Machine Site ID: 394

Additional Information:

Sector: Solar

Activity: Manufacturing

Product: Silicon


Project Announcement Date: 1/1/1997

Target for Starting Production: 1998

Date Commercial Production Started: 1998

Announced Post Inflation Reduction Act: No


Target Annual Production: 2000 tpa

Operating Status: Closed


Target Jobs: 300

Current Jobs: 300

Congressional District: Republican

Government Subsidies:

We currently have no government subsidies tracked for this site.

Selected Sources:

“Silicon Production Facilities”, REC Silicon, 05 Jul 2022. 🔗


“Hanwha Solutions Becomes the Largest Shareholder of “Clean Polysilicon” Manufacturer REC Silicon to Build a Green Solar Supply Chain”, hanwha.com, 03 Apr 2022. 🔗


“REC Silicon”, REC Silicon, 22 Jun 2022. 🔗


“REC Silicon to shut down polysilicon production capacity in Montana, US”, Jonathan Touriño Jacobo, PV Tech, 08 Feb 2024. 🔗


“Hanwha to exit from polysilicon business in US”, KED Global, KED Global, 02 Jan 2025. 🔗


“REC Silicon's strategic shift in Butte”, REC Silicon Investor Hub, 09 Feb 2024. 🔗


Tracked Expansions, Acquisitions, or Related Sites:

This site has 1 major expansion(s).

Those expansion(s) are tracked below:


Site 394B: Butte Silane Gas Facility


This website, dashboard, and dataset are maintained by Jay Turner and student researchers in the Environmental Studies Department at Wellesley College. It is updated at least monthly. The data presented are compiled from publicly available sources. Summary statistics are incomplete and omit data from sites where publicly available information (regarding capital investments, employment levels, etc.) is unavailable. While we make every effort to ensure the information presented here is accurate, the information should be treated as estimates. We assume no responsibility or liability for any errors or omissions. The information contained in this site is provided on an "as is" basis with no guarantees of completeness, accuracy, or usefulness. 
The data on this site was last updated on March 19, 2025.

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