LONGi toasts new p-type TOPCon and commercial heterojunction cell efficiency records

Facebook
Twitter
LinkedIn
Reddit
Email
Cell production at a LONGi facility. Image: LONGi.

Solar cell efficiency records have continued to fall after LONGi toasted breakthroughs in both high-efficiency p-type solar cells and commercial heterojunction (HJ) cells.

LONGi revealed today that its Cell R&D Center had achieved a new record cell efficiency of a p-type monocrystalline bifacial TOPCon solar cell of 25.02%, the first time a p-type cell had recorded a conversion efficiency in excess of 25%.

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 record was validated by the Institute for Solar Energy Research (ISFH) in Hamelin, Germany, which also confirmed LONGi’s record for its commercial-sized monocrystalline HJ solar cell produced by LONGi’s New Technology R&D Center.

The HJ solar cell reached a conversion efficiency of 25.26% during testing, a performance which LONGi said placed it “at the forefront of HJT-related technology”.

Meanwhile the solar cell and module manufacturer also celebrated sizeable gains in the conversion efficiency of its n-type TOPCon solar cell, which rose from the 25.09% recorded in April to 25.21%. It does, however, fall just short of the 25.25% conversion efficiency recorded by JinkoSolar and revealed yesterday.

“With the ambitious goals we have set for ourselves, our approach is to stay close to the essence of technology by selecting the best technical route, maximizing product performance potential and proactively ushering in the changes needed to achieve the technical transformation,” Li Hua, vice president and head of LONGi’s Cell R&D Center, said.

Read Next

August 24, 2026
Stronger downstream demand drove a surge in wafer prices last week, according to the latest figures from the Silicon Industry Branch of the China Nonferrous Metals Industry Association.
August 17, 2026
China’s polysilicon market saw no new transactions last week, with quoted prices remaining at the previous week’s baseline.
August 12, 2026
Websol has begun a brownfield upgrade of a 600MW mono PERC cell manufacturing line to TOPCon, increasing its total cell capacity to 1.35GW.
August 12, 2026
This week's PV Chart of the Week profiles the technology breakdown of projected US solar cell production capacity.
August 5, 2026
JinkoSolar, LONGi Green and Canadian Solar shared views on China's mandatory PV efficiency standard that will take effect from next year.
August 5, 2026
US module manufacturer DYCM Solar Modules has closed an investment round to fund the growth of its business and its solar module assembly plant in California, US.

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
Solar Media Events
April 20, 2027
Istanbul, Türkiye