A renewable energy source is the key to clean energy case and that's where solar energy engineering comes in. Solar energy engineering is the key to making solar power system work. It is an intricate machines that convert sunlight into electricity. This blog or upcoming blog posts is for those who are engineers, technicians and those who are interested in electrical, electronics and related field. In this blog series I'll be your guide to a money saving, time saving in your upcoming projects. Before we start the exact Solar Power Engineering And Technology we discuss some of the important terminologies associated with this. What is energy and power? Energy defines as the ability to do work. The work output depends on the work input and power is nothing but the energy can transferred or transformed. The unit of power is watt (W) . What is the unit of energy? In science we use joules (J) as the international System of Units of energy. A joules tells you how much energy work was