# LONGi solar cell efficiency record

> Live situation record from CLSTR: https://clstr.news/situations/longi-solar-cell-efficiency-record
> Updated: 2026-09-27T06:37:47.000Z. Sources: 4. Developments: 2.

Chinese photovoltaic manufacturer LONGi has established a new world record for single-junction crystalline silicon solar cell efficiency, reaching 28.29%. The efficiency of the hybrid interdigitated-back-contact (HIBC) cell was verified by Germany’s Institute for Solar Energy Research Hamelin (ISFH).

This milestone represents the third time the company has broken a record in 2026, following previous achievements of 28.04% and 28.13%. The company stated that this efficiency level reaches approximately 96.2% of the theoretical limit for crystalline silicon solar cells. The HIBC architecture utilizes a combination of n-type and p-type contacts on the rear of the cell to eliminate contact shading on the front surface, thereby maximizing light absorption.

## Timeline

### 2026-09-27: LONGi sets new solar cell efficiency world record at 28.29%

LONGi has set a new world record for single-junction crystalline silicon solar cell efficiency at 28.29%, utilizing hybrid interdigitated back-contact (HIBC) technology.

2 sources. https://clstr.news/cluster/longi-sets-new-solar-cell-efficiency-world-record-at-2829

### 2026-09-24: Longi sets world record for silicon solar cell efficiency at 28.29%

Longi has set a new world record for single-junction crystalline silicon solar cell efficiency at 28.29%, verified by Germany’s ISFH, approaching the theoretical limit of the technology.

2 sources. https://clstr.news/cluster/longi-sets-world-record-for-silicon-solar-cell-efficiency-at-2829

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Cite as: LONGi solar cell efficiency record. CLSTR, https://clstr.news/situations/longi-solar-cell-efficiency-record