Modules rated above 600 W strengthened their dominance, with their share increasing from 45% in January 2024 to 53% by December 2025
The 500-600 W category saw a gradual decline in relative importance, with its share falling from around 40% in early 2024 to 36% by the end of 2025
Modules below 500 W continued to lose relevance, with their share declining from 15% in January 2024 to 11% by December 2025
Power is another important characteristic of a module, alongside efficiency, given that it also serves as the primary sales metric for a PV panel. In addition, power indirectly determines the module's application; after all, power is also a function of size.
That’s why, in addition to our efficiency analysis, the TaiyangNews TOP SOLAR MODULES Report 2025 features a high-level review of module power ratings. We evaluate power development in 2 ways: by tracking the top 3 power ratings overall, and by tracking the power progress with each cell technology. Similar to efficiency, we’ve classified power ratings into 3 specific categories: modules under 500 W, between 500 and 600 W, and exceeding 600 W. At first glance, it is clear that the TOP SOLAR MODULES listing is clearly dominated by high-power modules rated above 600 W.
>600 W Class
This category continues to dominate the TOP SOLAR MODULES listing. Its overall share increased from 45% to 53% over this report’s evaluation period. In H2 2025, the dominance of the >600 W class strengthened further. The product share increased from 54% in July to 57% in November 2025. However, due to a decline in the overall product count, the share of this category fell to 53% in December 2025, but it remains the highest among the power classes. The product count increased from 27 in July to a peak of 28 in October, before falling to 24 by December. In H1 2025, its share increased from 48% in January 2025 to 53% in June 2025, while the number of products increased from 24 to 27.
In 2024, the >600 W class maintained its strong position, starting with a 45% share in January and ending at 49% in December, with product count increasing by just one, from 25 to 26. Despite the relatively small change in count, the class consistently held the highest share throughout the year.
500-600 W Class
The 500-600 W class had the next-largest representation. In 2024, the power class was quite close to the above segment in terms of market share; its share had been declining from 40% in January 2024 to 36% in December 2025.
In H2 2025, the 500-600 W class continued to lose relative ground. The product count declined from 17 in July to 14 by November, and again increased to 16 in December. Over the same period, its share fell from 32% in July to 30% in November and rose to 36% by the end of the year.
The first half of 2025 saw a slight decline. Product count fell from 20 in December 2024 to 18 in June 2025, resulting in its share dropping from 39% to 35%.
During 2024, the share for this category hovered around 38% throughout most of the year. Starting with 22 products and a 40% share in January, it ended slightly lower at 20 products and 38% share by December. This reflected a moderate decline as some products were phased out or replaced by higher-power modules.
<500 W Class
The <500 W category is, in a way, steadier. Over the 2-year period, its share has mainly ranged from 13% to 16%, with respective representation points of 15% and 11% for January 2024 and December 2025.
In absolute terms, the power class continued its downward trend, also in H2 2025. The product count declined from 7 in July to 6 in November and further to 5 by December. Correspondingly, the share slipped from 14% in July to 11% at year-end. This shows the diminishing relevance of 500 W modules as manufacturers prioritize higher power outputs across all cell technologies.
The number of products remained unchanged at 7 from January throughout H1 2025, as did its share at 14%.
In 2024, this band saw a marginal decline, with its share dropping from 15% in January to 13% in December, and the product count decreasing from 8 to 7. The continued market shift toward larger, high-efficiency modules explains the slow erosion of this category.
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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