Built for India, Ready for the World; RenewSys’ Anti-Acid EVA for Next-Gen Solar Modules

RenewSys, India's premier manufacturer of solar encapsulants, announced the launch of its latest innovation: CONSERV AA-14 FC, earlier this year. As a first mover in the encapsulant space, RenewSys has developed this advanced Anti-Acid EVA encapsulant to address the limitations of conventional materials. CONSERV AA-14 FC sets a new standard in solar module protection—specifically designed to meet the rigorous demands of India's diverse and challenging climates.

Traditional EVA encapsulants are prone to the formation of acetic acid over time, leading to corrosion of solar cells and metal connectors, yellowing of the encapsulant, delamination, and eventual performance degradation. These issues are magnified in high-moisture zones, such as coastal or tropical regions, where accelerated aging can drastically shorten module life. RenewSys' CONSERV AA-14 FC incorporates specialized acid-neutralizing properties that effectively mitigate this issue, by protecting solar cells, ribbons, and connectors from corrosive damage while preserving the encapsulant's clarity, electrical integrity, mechanical strength and adhesion.

RenewSys’ CONSERV AA-14 FC encapsulant stands out with its superior technical attributes, designed to deliver long-lasting performance and protection. With an optical transmittance of ≥91%, it ensures maximum light absorption for enhanced energy yield. Its UV cut-off wavelength of 360 nm provides robust protection against harmful ultraviolet rays, reducing long-term degradation. The material offers impressive mechanical strength, demonstrated by a tensile strength of ≥15 MPa, while maintaining structural stability with water absorption ≤0.1%. 

Additionally, our encapsulants feature low WVTR and moisture content, minimizing water ingress across all module configurations and effectively protecting the solar cells. Electrically, the encapsulant excels with a dielectric strength of ≥25 kV/mm and a volume resistivity >1×10¹⁵ Ohm·cm, offering exceptional resistance to electrical stress and environmental exposure.

These data-backed features make CONSERV AA-14 FC a high-performance encapsulant that ensures long-term module reliability—even under extreme operating conditions.

India’s solar landscape spans tropical heat, heavy monsoons, high humidity, and saline air, particularly in southern and coastal zones. These conditions challenge the longevity of PV modules, often accelerating degradation in conventional systems. RenewSys has designed CONSERV AA-14 FC specifically with these stressorss in mind, making it the ideal encapsulant for Indian and similar high-stress climates worldwide.

Its superior bonding strength ensures excellent adhesion to both glass and backsheets, reducing the risk of delamination—a common failure mode in solar modules operating under thermal cycling and damp heat conditions. Whether deployed on a rooftop in Kerala or a solar farm in Gujarat, CONSERV AA-14 FC provides future-ready protection that stands the test of time.

Beyond its protective qualities, CONSERV AA-14 FC is compatible with a range of solar technologies, including the latest TOPCon modules. Its formulation supports both single-stage and multi-stage lamination processes, offering flexibility to manufacturers and ensuring optimal module assembly.

As the industry shifts towards high-efficiency TOPCon cells, it's critical to address their heightened sensitivity to chemical degradation. Conventional EVA encapsulants often contain acidic by-products that can significantly damage N-type cells over time, compromising both performance and durability. CONSERV AA-14 FC eliminates this risk by providing a chemically stable environment, making them the ideal choice for all TOPCon-based modules. By preventing acid-induced degradation, CONSERV AA-14 FC helps unlock the full potential of TOPCon technology—ensuring long-term efficiency and reliability in the field.

Reference:

RenewSys R&D Team