Imperial Star Solar to build 4GW silicon wafer plant in Laos

Facebook
Twitter
LinkedIn
Reddit
Email
Rendering of a 4GW silicon wafer plant in Laos.
Imperial Star Solar expects the silicon wafer plant to be operational in May 2024. Image: Imperial Star Solar.

Cambodia-based solar manufacturer Imperial Star Solar has launched a silicon wafer manufacturing plant in Laos with a 4GW annual nameplate capacity.

Already under construction, the facility is expected to be operational in May 2024, with all preparations and construction on schedule, said Regan Fei, Laos’ branch general manager at Imperial Star Solar.

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

Silicon wafers produced at the Laos plant will cater to both p-type and n-type wafers in M10 (182mm) and G12 (210mm) sizes.

The company currently has an annual capacity of 2GW of solar cells and 2.5GW of modules with plants in Cambodia, and a module assembly plant under construction in Houston, Texas, US. With the wafer facility, the company increases its upstream supply chain with in-house capacity from wafers to modules.

Selecting Laos for the construction of a wafer plant will also allow the company to comply with the US anti-dumping and countervailing duties (AD/CVD) – with tariffs suspended until July 2024 – and reduce any risks of cost fluctuation.

“With the added advantage of sidestepping AD/CVD duties and enhancing product traceability, we are set to lead the market in innovation and reliability. This facility is an important step on our supply chain roadmap and ensures the quality and dependability of our offerings,” added Fei.

Moreover, with the expansion of a 4GW wafer plant in Laos, the company claims it has advanced traceability across its products, meeting the increased demand for transparency in the solar industry.

Read Next

September 30, 2026
US policy changes have reduced the country’s reliance on solar module imports from a number of Southeast Asian countries, writes Crux.
Premium
September 24, 2026
US Policy Focus: PV Tech looks at the Indian AD/CVD determinations, the ban on certain power equipment and other recent developments.
September 23, 2026
The US has published new limits on polysilicon imports to the US ahead of new tariffs coming into force on 4 December.
September 22, 2026
The Canadian International Trade Tribunal (ITT) has terminated anti-dumping (AD) and countervailing duties (CVD) on certain solar PV modules and laminates from China.
September 14, 2026
The US Department of Commerce (DoC) has finalised antidumping and countervailing duty rates on crystalline silicon PV cells imported from India, Indonesia and Laos, with combined rates reaching 249.13% for Indian manufacturers.
August 27, 2026
This week's PV Chart of the Week looks at forecast solar PV supply chain from polysilicon to modules until 2027.

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
February 2, 2027
London, UK