STR Holdings shuts down encapsulant production in China

Facebook
Twitter
LinkedIn
Reddit
Email
First Solar had been STR's largest customer as well as Suntech before bankruptcy.

Struggling US-headquartered solar PV encapsulant producer STR Holdings foray into recapturing market share by producing in China has come to an end with the closure of its manufacturing operations in the country. 

STR Holdings, majority owned by China-based PV project developer, Zhenfa Energy has experienced a catalogue of woes for many years, including losing its major customer First Solar and the majority of customers in Europe, due to bankruptcies, sector exits and acquisitions by Asia-based module manufacturers.

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

Only last year in October, a fire damaged part of its encapsulant production facility in Shajiabang, Jiangsu, China and has had significant trouble breaking into the Chinese market, despite claimed efforts by Zhenfa to have STR’s encapsulant specified to module manufacturers its used to supply to its PV power plant projects.

Indeed, a module assembly subsidiary of Zhenfa, which it previously acquired before STR, had secured a major encapsulant supply deal for STR but as SEC filings show had never purchased encapsulant material from STR as part of the supply contract.

Adding to STR’s woes after entering the China market was incurred bad debt expense that has amounted to US$2.6 million during 2016, which led the company to file lawsuits against three customers of STR China for non-payment during 2016.

Other Chinese module manufacturers that had certified its encapsulants were never supplied in volume quantities as their credit status put STR at risk, some due to previous poor payment history with the material producer.

STR has shifted some of tools from the closed China facility to a subcontractor in India. 

Financials

STR recently reported second 2017 net sales of US$3.05 million, compared to US$6.69 million in the prior year period. The sales decline is primarily attributed to lower sales from China. First half year sales were US$6.77 million, compared to US$13.1 million in the prior year period. 

Net loss for the first half of 2017 was US$3.33 million, compared to a net loss of US$7.96 million, due primarily to lower manufacturing and lower sales volume. 

Revenue from encapsulant sales is well below levels needed for STR to return to profitability. However, STR expected to eventually sell its manufacturing plant in Malaysia, which it closed in 2015. Proceeds are expected to be in the region of US$5.8 million, although issues with the land owner, Johor Port have stalled the sale so far. 

Although STR also has US$5.3 million of cash and US$0.1 million of bank acceptance notes located in China, the company noted that “evolving China currency control regulations may limit” its access to the funds for repatriation to the US.  

STR exited the second quarter of 2017 with cash and cash equivalents of US$13.4 million, although that includes US$5.3 million in China, US$1.2 million in Malaysia and US$1.5 million in Spain.  

Sales at STR peaked in 2010 at US259.2 million. 

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

September 16, 2025
Chinese polysilicon producer GCL-Tech has entered into a strategic financing agreement with Infini Capital, a globally renowned investment institution backed by a Middle Eastern sovereign wealth fund.
September 16, 2025
IB Solar is investing INR30 billion (US$340 million) in a 4GW TOPCon solar cell and module manufacturing plant in Jewar, Uttar Pradesh.
September 15, 2025
Vikram Solar has secured a contract to supply 200MW of modules to AB Energia, a domestic solar engineering, procurement, and construction (EPC) solutions provider. 
September 11, 2025
US cell manufacturer ES Foundry is proceeding with expansion plans despite a six-month delay due to recent trade and tax credit policy uncertainties.
Premium
September 11, 2025
PV CellTech USA: US cell manufacturer ES Foundry’s CEO Alex Zhu discusses his company's rapid ascent, strategic technology choices and the challenges of operating in a shifting policy environment.
September 10, 2025
At RE+ 2025, companies launched AI-driven platforms, terrain-following trackers, low-carbon modules, and advanced energy management solutions for solar and storage.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
September 16, 2025
Athens, Greece
Solar Media Events
September 30, 2025
Seattle, USA
Solar Media Events
October 1, 2025
London, UK
Solar Media Events
October 2, 2025
London,UK
Solar Media Events
October 7, 2025
Manila, Philippines