Solar energy is demand of the world because solar energy is ecofriendly, fuel and money saving. There are many types of solar panel are using worldwide which convert solar power into DC electrical power. It is called as green energy. We can install solar panels on rooftop.
When we have to get more voltage we connect solar cells in series. When we have withdraw more current then we connect solar cells in parallel. when we have to get more voltage and more current then we connect solar cells in mixed.