Ben visited Vikram Solar’s factory in Falta, West Bengal, to see how a solar panel is produced.Vikram Solar is the company that installed the solar power plant at the Cochin International Airport which has more than 46,000 PV panels, making it the first airport in the world to operate solely on solar energy!Soldering operation connecting the negative side of a solar cell to the positive side of a consecutive cell like a chain with help of copper interconnect ribbons.The strings are connected with help of copper bus ribbons as per the polarity of cells in each string and the output terminals are taken out.Proper insulators are placed in between the bus ribbons to avoid short circuiting.Another encapsulant layer, same as that on the front, and a three-layered PV backsheet is put on the rear side.