Considerations for selection of EVA Encapsulants Since decades, photovoltaic modules have been encapsulated with crosslinked Ethylene Vinyl Acetate (EVA) sheets as they still provide the most optimal solution for packaging solar cells with the required degree of environmental protection. However apart from just long term protection, encapsulants serve multiple other purposes also. They physically hold … Continued
Field issues in Crystalline Solar PV Modules One key factor in reducing the costs of photovoltaic systems is to increase the reliability and the service lifetime of the PV modules. Solar modules undergo harsh environmental stresses under constant variations of temperature and humidity. In addition, the modules also have to withstand 25 years in such … Continued
Solar Module Retesting Guidelines Changes in material selection, components and manufacturing process can impact electrical performance and reliability of the solar module. Considering the required 25 years lifetime from solar photovoltaics modules, it is important to undergo retesting in case of any major changes to the bill of material. Those products meeting the requirements of … Continued
List of MNRE accredited test laboratories IEC 61215 certification is a recurring test procedure that needs to be undertaken by any module manufacturer every five years. Currently The following MNRE accredited test laboratories undertake IEC 61215 qualification testing on Solar photovoltaic modules: S. No. Lab/ Organisation Specifications Address Website 1 National Institute of Solar Energy … Continued
Solar modules come in a range of sizes and capacities. Starting from smaller 1 to 50W sizes for home lighting purposes to 100-150W for off-grid installations, larger modules for power plant purposes can go all the way to 350W+ sizes. Maintaining such sizes and inventory of bill of material can be a daunting task for the module manufacturer. Using our ‘EVA width ready reckoner’, Brij customers have one less thing to worry about.
Test standards for solar EVA encapsulants A Crystalline module though looks simple, is a combination of highly engineered materials working together in tandem to harness energy. Thus each and every component used affects its quality, durability and is as important as any other. One such component is the Ethylene Vinyl Acetate (EVA) encapsulant. This transparent … Continued
Lamination is the most important process in making of solar modules. A good laminate ensures long life and durability of PV modules whereas an improper one can lead to early or premature module failures. Understanding the complete process not only helps in producing a better product but also reduces losses like cell breakage, air bubbles and delamination, which mostly occurs due to incorrect processing parameters.
Ethyl vinyl acetate (EVA) sheets or solar EVA encapsulants are one of the most important components of the solar module and are responsible for its long-term reliability and performance. Solar modules generally use about 0.014m^2 to 0.016m^2 of EVA per Wp of module capacity. At current EVA prices, this relates to roughly about 4% share in final modules prices.