Recently, five national standards in the photovoltaic field, led by Atlas Sunshine Power Group Co., Ltd. (Hereinafter referred to as "Atlas"), were approved and issued by the Ministry of Industry and Information Technology and the National Standardization Management Committee. Based on the reality of high-quality development of photovoltaic industry, these five standards cover key links such as ground crystalline silicon photovoltaic cells, photovoltaic modules and testing methods of photovoltaic devices, which not only provide solid standard support for technological upgrading, quality improvement and global competitiveness construction of photovoltaic industry, but also provide strong support for the development of photovoltaic industry. It also lays a solid foundation for the industry to crack homogeneous competition and achieve sustainable development.
As the world's leading provider of photovoltaic and energy storage solutions, Atlas has been deeply engaged in technological innovation and industrial practice for a long time. The formulation and promulgation of the five national standards further consolidated the company's technological voice and industry influence in the global photovoltaic industry.
Five standards focus on the pain points of the industry. Build a solid technical foundation
1. GB/T 29195-2025 "General Specification for Terrestrial Crystalline Silicon Photovoltaic Cells": Set up a "national scale"
for the whole process of crystalline silicon cells. This standard fully integrates the performance indicators and safety requirements of crystalline silicon cells. The design structure, mechanical properties, electrical properties, environmental tests and other full-dimensional requirements and test methods are clarified, which provides a unified national technical basis for the design, production, inspection and delivery of crystalline silicon photovoltaic cells for ground use, and thoroughly solves the pain points of inconsistent standards and difficult mutual recognition of test results in the previous industry.
2. GB/T 6495.5-2025 Photovoltaic Devices-Part 5: Determination of the Equivalent Cell Temperature (ECT) of Photovoltaic Devices by the Open-Circuit Voltage Method: Provides technical support
for improving the efficiency of power plants. This standard defines the preferred test method for the equivalent cell temperature (ECT) of photovoltaic devices. It can be used to compare the thermal characteristics of photovoltaic devices, determine the nominal cell operating temperature (NOCT) or nominal module operating temperature (NMOT), and realize the cross-temperature conversion of I-V characteristics. This method will provide key technical support for large-scale photovoltaic power plants to improve system operation efficiency and achieve double-sided power generation gain.
3. GB/Z 46984. 3-2026 Photovoltaic Cells-Part 3: Measurement of Current-Voltage Characteristics of Double-Sided Photovoltaic Cells: Provides a unified "yardstick"
for the test of double-sided cells. This standard provides a unified technical basis for the performance evaluation of double-sided photovoltaic cells. Ensuring the accuracy and consistency of the measurement results will strongly promote the technological progress and product quality improvement of the photovoltaic industry. For the test of electrical parameters of double-sided batteries, the standard defines three scientific test methods: double-sided synchronous illumination method, front equivalent light intensity method and sequential illumination method.
4. GB/Z 46984. 4-2026 "Photovoltaic Cells-Part 4: Test Method for Photothermal Induced Degradation of Crystalline Silicon Photovoltaic Cells": Fill in the gaps
in the LETID test industry. It refers to the performance attenuation of batteries in photothermal environment, which has been widely recognized by the scientific community, but there has been a lack of unified test standards in China for a long time. For the first time, the standard established an authoritative and standardized LETID testing benchmark, which pushed the evaluation from laboratory research to industrial application. The standard specifies the test equipment requirements, sample preparation specifications, test methods and detailed operation procedures, which is helpful for enterprises to judge the LETID risk of crystalline silicon batteries, evaluate the effectiveness of anti-LETID technology, and ultimately enhance the outdoor power generation capacity of photovoltaic modules.
5. GB/Z 119-2026 Test and Detection of Photothermally Induced Degradation (LETID) of Crystalline Silicon Photovoltaic Modules: To protect
the long-term stability of modules, this standard aims to reveal the sensitivity of LETID attenuation mechanism of modules. It is the key basis for component material selection, process optimization and quality certification, which can help enterprises identify potential risks in advance and improve the long-term power generation stability of products.
Looking up to space and implementing the series of national standards for ground photovoltaic
will comprehensively improve the overall level of ground photovoltaic industry in terms of product consistency, data comparability and quality reliability, provide important technical support for policy supervision, market access and mutual recognition of international standards, and promote the development of ground photovoltaic industry. Help the industry to get rid of low price and move towards a new stage of value competition.
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