LONGi updates Hi-MO 9 modules, hits 24.8% conversion efficiency

Facebook
Twitter
LinkedIn
Reddit
Email
The launch of LONGi's latest Hi-MO 9 modules.
LONGi’s Hi-MO 9 modules use its HPBC 2.0 cells. Image: LONGi.

Leading Chinese solar manufacturer LONGi has launched the latest version of its Hi-MO 9 module, which now boasts a conversion efficiency of 24.8% and an output of 670W.

Both metrics are improvements on the previous generation of the Hi-MO 9, which has an efficiency of 24.43% and an output of 660W. The new module also uses the company’s hybrid passivated back contact (HPBC) 2.0 cells, a zero busbar cell that locates its metal contacts on the rear of the cell, in order to maximise the cell’s electricity generation.

This article requires Premium SubscriptionBasic (FREE) Subscription

Unlock unlimited access for 12 whole months of distinctive global analysis

Photovoltaics International is now included.

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Unlimited digital access to the PV Tech Power journal catalogue
  • Unlimited digital access to the Photovoltaics International journal catalogue
  • Access to more than 1,000 technical papers
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

LONGi claims that its latest module has a 1.5% higher conversion efficiency and up to 40W higher power output than tunnel oxide passivated contact (TOPCon) modules currently in commercial production. This translates to an increase in installed capacity of approximately 6.4% over “equivalent land area”, according to LONGi’s testing.

“BC technology represents the ultimate advancement in crystalline silicon solar cells,” said LONGi vice president Dennis She. “With a mature global ecosystem, high-efficiency BC modules are rapidly being deployed across diverse applications.”

She’s comments reflect the fact that LONGi has tested the products in both China and Saudia Arabia, to measure the impacts of high-humidity and high-temperature environments on the modules.

LONGi also announced that its heterojunction interdigitated back contact (HIBC) cells, another form of back contact cells, have reached a conversion efficiency of 27.81%.

Last year, the company developed HJT back contact cells with a conversion efficiency of 27.09%, and earlier this year chairman Zhong Baoshen told PV Tech Premium that “from a technical point of view, BC is now the product with the most customer value in the PV field”.

The new cell and module developments follow months in which LONGi has been embroiled in a wave of patent disputes. In February, rival Chinese manufacturer JinkoSolar launched a patent case against LONGi in Australia, and LONGi responded by filing a lawsuit of its own against JinkoSolar in the US, following a swathe of lawsuits filed in China and Japan.

LONGi’s leadership has also expressed concern over the extreme price competition within the solar manufacturing sector. Last month, LONGi founder and CEO Li Zhengou held a joint press conference with Canadian Solar chairman Shawn Qu to discuss the challenges facing Chinese manufacturers as a whole.

“The long-term prospects for PV remain bright, but in the short term, I’m not overly optimistic,” he said. “Companies have shifted from merely losing cash to a state of severe bleeding.”

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

June 5, 2025
Investment in clean energy and grids will reach US$2.2 trillion in 2025, double the expected investment into fossil fuels this year, according to data from the International Energy Agency (IEA).
June 5, 2025
US renewable power developer Invenergy has commissioned the 250MW Hardin III Solar Energy Center in the US state of Ohio.
June 4, 2025
Chinese PV module manufacturer Haitai Solar has announced the termination of a 10GW TOPCon and the reallocation of investment to fund an Indonesian facility.
June 2, 2025
Arctech has partnered with ACME Cleantech Solutions to provide 175MW worth of solar trackers for an upcoming facility in Duqm, Oman.
June 2, 2025
A new manufacturing method has produced tandem perovskite-silicon tandem solar cells with a conversion efficiency of 27.8%.
June 2, 2025
The LECO process used in the production of TOPCon solar cells could increase their resistances by 'orders of magnitude', per new research.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
June 17, 2025
Napa, USA
Upcoming Webinars
June 30, 2025
10am PST / 6pm BST
Solar Media Events
July 1, 2025
London, UK
Solar Media Events
July 1, 2025
London, UK
Solar Media Events
September 16, 2025
Athens, Greece