Solar panel manufacturing is one of the cornerstones of today’s drive towards sustainable energy. The journey of the high-efficiency panels we use today actually begins from a very modest starting point: sand. The silicon element found in sand is processed and refined into high-purity silicon. This is one of the most critical stages, as it directly affects the efficiency of the panel. The silicon is then cut into thin slices to form small plates called wafers. These wafers constitute the heart of the photovoltaic cells that convert sunlight into electrical energy.
During cell production, special coating layers are applied to the wafers and a p-n junction is created to enable the photovoltaic effect. In this way, the photons in sunlight release electrons within the cell, generating an electric current. Conductive busbars are carefully placed on the surface of the cell, and all the cells are connected in series or in parallel to form a panel module. In module production, the cells are encapsulated with tempered glass on the front, EVA encapsulant in the middle and a protective backsheet at the rear. This structure protects the panels against both environmental influences and mechanical stress.
In the final stage of production, every panel goes through quality control, tested under different light conditions and temperatures. These tests ensure that the panel will operate efficiently in the field for many years. At Zes Solar, we not only manufacture high-efficiency panels, but also keep our carbon footprint to a minimum through environmentally friendly production methods. We combine engineering, technology and sustainability principles to deliver clean energy from the sun to every area of life.