Sumco closing silicon plant in Ohio

Facebook
Twitter
LinkedIn
Reddit
Email

Sumco Phoenix Corporation is to close its silicon wafer manufacturing plant in Maineville, Ohio, USA due to the weaker than expected demand and semiconductor industry’s move to larger wafer sizes. The Ohio plant also makes solar silicon ingots, which will also be affected by the closure. Consolidating its operations, Sumco said that production would shift to its other plants in the U.S. and overseas.

“This was a very hard, yet necessary conclusion to reach for the continued survival of our business,” commented Shigetoshi Shibuya, SUMCO Phoenix Corporation President and Chief Executive Officer. “The employees at Maineville have tried valiantly for some time to make this work, and we are extremely grateful to them; however, our operations there have been severely impacted by both the unexpected nosedive of the global economy and changes within the industry itself over the past year.”

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Approximately 360 workers will be affected by the closure, which is expected to be completed by June, 2010. Sumco had bought the plant in 1989. It has no current plans to sell the plant or surrounding real estate, the company said.

Read Next

July 20, 2026
Lodestone Energy and Centralines have started construction on the 31.5MWp Central Hawke's Bay solar PV power plant.
July 17, 2026
US solar developer Sol Systems has reached financial close on its 123MWac Peoria Solar Portfolio in Illinois.
July 17, 2026
The Zambian government has signed five contractor groups to build 312MW of solar capacity, with a 2MW solar plant in each constituency.
July 17, 2026
Renewable energy generation is now accelerating faster than energy systems can absorb it, according to Schneider Electric's Frédéric Godemel.
July 17, 2026
Qcells has become the first company to achieve UL Standards & Engagement (UL) and the International Electrotechnical Commission (IEC) certifications for silicon-perovskite tandem solar technology.
Premium
July 17, 2026
PV Talk: Solclaris' Joe Miletic discusses the 'ready-to-repower' stage of PV project O&M and how it differs from the 'ready-to-build' stage.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
April 20, 2027
Istanbul, Türkiye