HJT and TOPCon converged at the highest power level, both reaching 730 W by December 2025
BC modules showed gradual but limited power growth, with AIKO raising the top BC power from 655 W in mid-2024 to 670 W by December 2025
PERC saw no power progression, with the top listed power dropping from 675 W to 670 W in December 2025
The power rating of a module tells a story beyond its technical capabilities. It often deals with practical feasibility. While power has no direct relevance to cell technology, tracking power progression by cell architecture provides insights into how manufacturers position their products for specific applications and system architectures. Historically, HJT has led the TOP SOLAR MODULES listing in absolute power. However, this leadership turned non-exclusive in H2 2025, with TOPCon matching HJT at 730 W.
In H2 2025, HJT maintained its position at the top end of module power but did not record any further gains beyond the milestone reached in June. After Huasun raised the top HJT power rating to 730 W in June 2025, this level remained unchanged throughout the second half of the year. In December 2025, the 730 W tier within the HJT stream expanded, with Risen Energy joining Huasun at this power level.
In H1 2025, Huasun set a new record in June with a 730 W HJT module, surpassing its own 720 W mark and becoming the first company to reach this level in the TOP SOLAR MODULES listing. At the beginning of 2024, Huasun and Tongwei Solar’s 715 W products shared the top position for power in the HJT stream. In August, Huasun raised the bar by introducing a 720 W module, securing the top position exclusively through the end of 2024.
TOPCon attained a key power milestone in H2 2025. Towards the end of the year, the technology also achieved the top power rating of the TOP SOLAR MODULES listing, ultimately matching HJT at the overall power ceiling. During most of H2 2025, the top-rated TOPCon module power remained unchanged at 715 W, led by Trinasolar, till September. In October 2025, Trinasolar raised it to 720 W, but it was short-lived as the module was subsequently delisted, causing the TOPCon power ceiling to revert to 700 W in November 2025. TOPCon reached a major milestone in December 2025, with GCL SI introducing a 730 W TOPCon module, placing it on par with HJT at the highest power level in the listing for the first time.
In the first half of 2025, Trinasolar made a notable upgrade, increasing the power of its TOPCon module to 715 W in May, up from the 700 W level maintained since 2023. This also implies that Trinasolar’s 700 W module was the leader in TOPCon throughout 2024.
BC, albeit an efficiency leader, stood last in power ratings. However, there has been considerable progress in the power aspect of BC as well. During H2 2025, the top power level in the BC stream was extended further. After remaining unchanged at 660 W from July till November 2025, AIKO raised the upper limit to 670 W in December 2025, setting a new benchmark for IBC module power by year-end. This level also aligns with PERC’s top power ratings, though the latter fell this month.
In H1 2025, AIKO increased the power rating of its leading IBC module from 655 W to 660 W in June, marking a modest but symbolic increase in the IBC stream. The company continues to lead BC power rankings unchallenged. The top power for IBC changed only once in 2024, again by AIKO, which has also been the leader of the BC power league with a 620 W product. Its record-efficiency module, which was included in May 2024, also delivered a power improvement to 655 W and retained its lead through the end of the year.
PERC, by contrast, remained structurally constrained in terms of power development, with no upward movement at the top end. The change in this category is rather driven primarily by product exits.
During H2 2025, the PERC power hierarchy experienced its first notable change in several years. In December 2025, Canadian Solar’s long-standing 675 W PERC module was delisted from the TOP SOLAR MODULES listing. As a result, the highest power level in the PERC category fell to 670 W, represented by Trinasolar.
Prior to this, there was no change in the top-rated power for the PERC category in H1 2025 or throughout 2024. However, there was a change in representation. Due to the delisting of a PERC module from Risen, this level has been represented solely by Canadian Solar since January 2025. Throughout 2024, the top power of the PERC stream was jointly represented by 675 W modules from Canadian Solar and Risen.
The text is an edited excerpt from TaiyangNews’ latest TOP SOLAR MODULES Report 2025, which can be downloaded for free here.
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