China's New PV Grading System: The End of Commodity Solar

China is moving to end the era of solar modules as undifferentiated commodities. Through a public consultation on six proposed electronic industry standards, the Ministry of Industry and Information Technology (MIIT) is introducing a structured framework to classify and grade photovoltaic products.

This is not a simple pass-fail mechanism. The proposal shifts the industry toward a tiered hierarchy based on reliability, power-generation performance, and green attributes. By assigning specific grades, the state is creating a mechanism that will dictate procurement, financing, and insurance across the solar sector.

The grading structure is mathematically precise:

• Grade 1: Products scoring 80 points or higher.
• Grade 2: Products scoring 60 to 79.
• Grade 3: Products scoring below 60.

This stratification forces manufacturers to compete on technical excellence rather than just price. The reliability component moves beyond uniform baseline testing, introducing differentiated requirements for specific climates and applications—including assessments for sand and dust exposure, marine environments, and ultraviolet aging.

The performance thresholds specifically target n-type technologies, setting clear benchmarks for efficiency and bifaciality. For A+ efficiency, the draft sets thresholds at 25% for TOPCon, 24.8% for HJT, and 25.2% for BC products. Looking at the floor, Huatai Securities notes that proposed minimum efficiency thresholds are 23.4% for TOPCon, 23.5% for HJT, and 23.9% for BC modules.

The inclusion of "green attributes"—covering manufacturing energy consumption, carbon intensity, and lifecycle carbon footprint—is the most strategic move in this draft. This allows China to align its domestic manufacturing standards with the stringent sustainability requirements found in overseas markets.

For the industry, the implication is clear: consolidation is the objective. Manufacturers unable to meet these higher-tier efficiency and reliability benchmarks will find themselves relegated to Grade 3, effectively cutting them off from high-value project tenders and institutional financing. The era of low-cost, low-spec solar is being legislated out of existence in China.

Watch the adoption of these standards in domestic tender documents; they will serve as the new blueprint for global solar competition.