Solar Panel Sizes Guide: M10 vs G12 Suppliers

The solar panel market in 2026 is defined by a decisive shift toward N-type (TOPCon) technology and larger wafer formats, specifically M10 (182mm) and G12 (210mm). M10 remains the dominant standard for residential use (~70% market share) due to its optimal balance of weight and efficiency Crgdirect Solarinsure, while G12 is rapidly expanding in commercial and utility sectors to maximize power density Reolink Datainsightsmarket.

Key Market Insights

Technological Dominance: N-type cells are projected to hold over 80% market share by 2026, offering efficiencies exceeding 26% Greenlancer Couleenergy.
Size Standardization: Residential panels (108-cell) typically measure ~1722 x 1134 mm, while high-power commercial modules (144-cell) reach up to 2278 x 1134 mm Solarinsure.
Emerging Trends: There is a growing focus on rectangular cell formats (182R/210R) to optimize shipping container space and module surface area Infolink-Group.

Supplier Landscape

I have identified a comprehensive list of verified suppliers specializing in these high-efficiency formats. Notable manufacturers include Changzhou Powersourcing, DAH Solar, and Wuxi Sunket, all offering N-type TOPCon and large-format G12 modules with international certifications like CE, TUV, and IEC Alibaba Alibaba Alibaba.

Detailed supplier lists and technical specifications for each size category are available in the files below.