LONGi’s 5BB module, certified by TUV SUD, improves performance of 300W plus modules

Facebook
Twitter
LinkedIn
Reddit
Email
Zhenguo Li, president of LONGi Green Energy.

SPONSORED: LONGi New Energy recently announced that its independently developed M2A1L4 5BB (busbar) mono module product has been certified by TUV SUD, a testament to the efficiency, reliability and stability of LONGi’s products from a third-party certification body, and also further evidence of LONGi continuing to lead in the technology developments within the PV manufacturing industry.

The 5BB mono module is a significant step forward for LONGi this year. Compared to the traditional 4BB module, the additional bus bar optimizes the screen pattern on the cells, lowers the overall series resistance of the cell strings and minimizes bar area, in order to increase light utility rate and consequently improve module performance.

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

The upgrade from 4BB to 5BB not only increases module power, but also reduces the use of silver on the front side of the cells, potentially resulting in the universally sought combination of a reduction in module cost as well as an increase in module power.

Conducting light-induced electricity from inside the cell to outside, busbar technology plays a vital role in the development of high efficiency modules. It is estimated that a single 5BB mono module provides an extra 1.25W of power compared with its 4BB equivalent, offering a significant increase in efficiency of modules of 280W and above –  a critical advance towards continuing to lower the LCOE and enhance module power.

Zhenguo Li, president of LONGi Green Energy, said: “The full deployment of 5BB technology will effectively achieve a huge improvement in module power. Over recent years, module power has stepped up from 260W to 270W, 280W to 290W; nowadays, 300W modules have also reached mass production level. As we enter the mass production phase of high quality, high efficiency modules, combined with high levels of reliability and stability, with 300W products leading the way, we are effectively living in the PV 3.0 era, in which high efficiency modules will dominate the PV market, providing us with lower LCOE and investors with a higher return. In this whole new PV 3.0 era, ever increasing module power will speed up the arrival of grid parity.”

Read Next

Premium
June 9, 2025
N-type polysilicon prices have dropped to RMB34,000/ton as the project installation rush ends, putting cost pressure on the industrial chain.
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.
Premium
June 2, 2025
Struggling Swiss solar manufacturer Meyer Burger has announced that its two German subsidiaries, including the owner of its solar cell manufacturing facility in Thalheim, are insolvent.
Premium
May 29, 2025
PV Talk: Global Solar Council CEO Sonia Dunlop tells Shreeyashi Ojha why the solar industry needs collective action to combat political and supply-chain disruption.
May 28, 2025
ISC Konstanz is working with US solar cell manufacturer Suniva on its 1GW silicon solar cell production facility in the state of Georgia.
Sponsored
May 28, 2025
Ben Willis speaks to Astronergy about its next-generation TOPCon offering and the advantages of its zero-busbar module design, both of which were on show at Intersolar 2025.

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