What is EVA encapsulant in solar panels?
The solar cells are encapsulated above and below with EVA, which stands for ethylene vinyl acetate. The cells are compressed between EVA layers at 150 degrees C under pressure, effectively sealing them from contaminants. It also acts as a shock absorber on both sides of the delicate crystalline structure.
The Relative Density of EVA is 0.92 to 0.94 g/cm 3, so it is lighter than water, with a RD of 1. EVA doesn’t contribute much weight to the panel at all, just a few ounces at most.