Traditional or commonly used solar panels, being made up of a silicon photovoltaic cell array, are rigid and need to be mounted on large flat areas, preferably roof tops, making the surface area available for harnessing a limitation. Research in the direction of surpassing this shortcoming has led to the innovation of thin film solar cells made with CIGS technology which are flexible and can be mounted on a variety of surfaces, like exterior walls and windows. Sunflare, the Los Angeles based solar technology firm has already developed Solar Wall Paper, a thin and flexible sheet of solar cells that can be ‘stuck’ on to any surface like the top of a vehicle or the surface of a wall. Furthermore, a couple of Korean universities are developing flex sheet solar cells which will be no thicker than a micrometre, and can be used by wrapping them around any object like a table, a book or even a pencil!