The more direct and intense the UV rays from the sun, the higher the production of energy produced by solar panels will be.  There will always be electricity generated as long as there is visible light, though it will be less.  The amount of energy solar panels will produce depends on several factors, including the weather and general climate of the area your panels are installed. Depending on the style of building, there are different variations in technology that can be used to improve the effectiveness of solar panels. Contact us to find out the best individual solution for your situation.