Calisolar to build proprietary low-cost silicon solar wafers at US$600 million US plant

Facebook
Twitter
LinkedIn
Reddit
Email

Calisolar is making its move to become high-volume low-cost silicon solar wafer producer with plans to build a 16,000MT silicon production facility in Lowndes County, Mississippi at an estimated cost of US$600 million. A pioneer of enhanced UMG-based wafers, Calisolar is bring silicon material production in-house to significantly lower costs and have greater control over material quality. When fully operational, the plant is said to employ 951 full-time workers.

Despite three highly publicised bankruptcy announcements (Evergreen Solar, Spectrawatt and Solyndra) from solar firms based in the US in recent weeks and several PV module plant closures (BP Solar, Solon and SolarWorld) the US is home to three major polysilicon and wafer producers (Hemlock Semiconductor, MEMC and REC), which will be supplemented by Wacker Chemie on completion of its first polysilicon plant in the country.

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

The major investment by Calisolar has been supported by a US$75 million incentive package from the State of Mississippi as well as US$275 million conditional loan guarantee by the U.S. Energy Department (DOE). The DOE has also previously supported Calisolar in R&D programs to develop its low cost wafer technology. However, there were deadline issues attached with the DOE loan that originally applied to previous plans to build a plant in Ohio, which suggests alternative funding is being sourced. 

John Correnti, executive chairman of Calisolar's Board of Directors, said: “We've demonstrated that our low-cost silicon can produce high-performance solar cells, now sold commercially, which has been an important step in the growth of our company. Now, our focus is on expanding silicon production capacity — where we have the greatest competitive cost advantage — and achieving further cost savings.”

Calisolar previously acquired Canadian start-up 6N Silicon for its novel silicon refining expertise in 2010, which later that year attracted Suntech to partner in adding capacity at 6N’s plant in Ontario, Canada.

Metallurgical equipment and systems expert, SMS Siemag will supply the majority of the equipment including furnaces at the Mississippi facility, while Zachry Holdings will be engineering and building the facility, according to Calisolar.

Calisolar has small production plants in California and Ontario, Canada. The new facility was said to be required due to demand and the need to further scale operations to reduce production costs.
 

Read Next

July 31, 2026
FIC has acquired Perfect Power, developer and owner of the Jaguar Energy Centre, a planned 1.15GW solar and battery storage platform.
July 31, 2026
The Colombian Ministry of Mines and Energy has awarded 995MW of solar PV and nearly 100MW of battery energy storage system (BESS) in a clean energy procurement auction.
July 31, 2026
Solar PV solutions provider Nextpower has registered a record quarterly eBOS bookings in the second quarter of 2026 and completed the acquisition of Zigor Corporation and its US-based subsidiary, Apex Power.
July 31, 2026
German solar research centre the Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) has signed an agreement with Himachal Pradesh University to pursue research into floating solar PV.
July 31, 2026
Avaada has secured approximately US$1.3 billion in debt to fund a 2.15GW portfolio of hybrid and solar projects in Gujarat and Maharashtra.
July 31, 2026
First Solar reported net sales of US$1.06 billion for Q2 2026, down 4% year-on-year, while reaffirming its full-year 2026 guidance.

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