LONGi signs major US$1 billion polysilicon supply contract with OCI

Facebook
Twitter
LinkedIn
Reddit
Email
LONGi said in a financial filing that the contract would last three years and would entail the purchase of around 64,638MT for its subsidiaries that produce monocrystalline silicon ingots and wafers locate in Yinchuan, Baoshan, Lijang and Ningxia, China. Image: LONGi

Leading integrated high-efficiency monocrystalline module manufacturer and ‘Silicon Module Super League’ (SMSL) member LONGi Green Energy Technology has signed a three year deal to purchase polysilicon from Korean-headquartered polysilicon producer OCI Co worth around US$1.02 billion. 

LONGi said in a financial filing that the contract would last three years and would entail the purchase of around 64,638MT for its subsidiaries that produce monocrystalline silicon ingots and wafers locate in Yinchuan, Baoshan, Lijang and Ningxia, China. 

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 polysilicon contract between LONGi subsidiaries is with OCI in Korea and its Malaysian operations, acquired in 2017 from Japan’s Tokuyama. 

Recently, PV Tech reported that LONGi was tripling ingot/wafer capacity through 2020. The new strategic plan includes taking ingot/wafer capacity to 28GW by the end of 2018 and 36GW by the end of 2019. LONGi also said that the plan was to achieve 45GW by the end of 2020. 

PV Tech reported that LONGi was tripling ingot/wafer capacity through 2020.

PV Tech also recently reported that OCI was expanding its production of high-purity polysilicon to meet greater demand for P-type monocrystalline wafers used with PERC (Passivated Emitter Rear Cell) technology. The company said that its South Korean production of high-purity polysilicon for mono wafers, which stood at around 42% of capacity – would be increased to around 60% of production capacity in 2018.

The company said that its South Korean production of high-purity polysilicon for mono wafers, which stood at around 42% of capacity - would be increased to around 60% of production capacity in 2018. Image: OCI

OCI has around 52,000MT of polysilicon capacity in South Korea and its average product mix in 2017 for mono-quality polysilicon was said to be only around 35%.

Polysilicon production at its facility in Malaysia, recently acquired from Tokuyama is being expanded from a nameplate capacity of 13,800MT to 16,000MT per annum by the end of 2018, through upgrades and debottlenecking and engineering process improvements and could be expanded to 20,000MT to 25,000MT based on market demand. 

PV Tech recently highlighted that all the major China-based PV manufacturers had been purchasing polysilicon from domestic producers as well as from Korean firms and Wacker Chemie in Germany, negating the need to negotiate with US trade authorities over lifting anti-dumping duties on US imported polysilicon, which was sparked by the US imposing anti-dumping duties on Chinese and Taiwanese imported solar cells and modules. 

Domestic Chinese polysilicon producers have lagged both polysilicon demand and high-purity requirements for high-efficiency P-type mono wafers. However, a wave of capacity expansions and new advanced upgraded facilities in China is expected to reduce further dependence on all polysilicon imported in the country over the next few years.

7 October 2025
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 7-8 October 2025 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023 and 2024 were a sell out success and 2025 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.
10 March 2026
Frankfurt, Germany
The conference will gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing out to 2030 and beyond.

Read Next

Premium
October 6, 2025
Talon PV aims to be the first US company to safely manufacture TOPCon cells at scale, backed by European technology and a crucial First Solar licensing deal.
October 3, 2025
The US solar manufacturing industry is feeling bullish, despite the policy whiplash inflicted over the summer and the increased pressure on US solar supply chains.
October 3, 2025
Chinese government policies and supply-side production cuts will drive a significant increase in solar and storage component costs.
October 2, 2025
PV products using perovskite technology could assume a dominant position within the next ten years, according to module producer Qcells' CTO.
October 2, 2025
The Indian Department of Commerce has launched an antidumping investigation on solar encapsulants originating or exported from South Korea, Vietnam and Thailand.
Premium
October 2, 2025
PV Talk: Qcells’ CTO Danielle Merfeld discusses the imminent opening of America’s first integrated c-Si ingot-to-module factory and her belief in solar’s long-term strengths.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
October 7, 2025
Manila, Philippines
Solar Media Events
October 7, 2025
San Francisco Bay Area, USA
Solar Media Events
October 21, 2025
New York, USA
Solar Media Events
November 25, 2025
Warsaw, Poland