Global photovoltaic (PV) capacity continues to soar—new installations reached 532 GW in 2024. The key material that enables solar panels to operate outdoors for over two decades is silicone. The PV industry has extremely high standards for weather resistance and stability, and silicone—combining flexibility and strength—acts as the panels’ “guardian.”

PV panels are exposed year-round to UV radiation, heavy rain, temperature fluctuations, and coastal salt spray. Ordinary materials deteriorate within five years, but silicone sealants solve this problem perfectly. Their unique Si–O bond structure gives them exceptional aging resistance, maintaining over 80% of initial tensile strength and adhesion even after twenty years of exposure. With light transmittance exceeding 90%, silicone sealants also minimize solar obstruction, preserving power generation efficiency.

Data shows that every 1 GW of PV capacity requires 1,200 – 1,500 tons of silicone sealant. Based on projections of 930 GW of new capacity by 2029, market demand is set for explosive growth. Beyond sealants, silicone is also vital in potting PV inverters and insulating cables. From module packaging to system protection, silicone’s comprehensive defense framework enables efficient solar power use and injects momentum into clean energy growth.