Solar Energy in the House Solar energy is described as power coming from sunlight. It is a very economical way of getting energy needed for different household tools and devices such as lighting, power tools, appliances and other gadgets. You can save more in the next few decades by investing in solar power. Solar power is also a renewable source of energy, which means that it is very clean. Today, it is more important to invest in devices that do not damage the environment and atmosphere. Solar panels do not have any moving parts and will need only minimal maintenance. As soon as the system has paid for its initial installation costs, you can get the benefits for several decades more for free. Solar panels are also known as photovoltaics and are primarily used to convert light from the sun. These are made of energy particles called photons that are changed into electricity to power various electrical loads. Light from the sun is considered as a renewable energy resource that gives clean energy. Grid-Tie Solar System The grid-tie solar system is very useful for homes that are already linked to the utility grid. The primary advantage of this kind of system is the cheap price of utility. The system needs to be wired with an inverter that creates pure-sine-wave AC electricity, which is needed for linking to the utility grid. Solar Energy Radiation Right now, we are all actually being subjected to the sun s background radiation, which could be dangerous if exposure to it exceeded a certain level. There is really nothing we can do to prevent being exposed to such background radiation other than to simply avoid sun exposure. Basic Heat Principles Heat is described as a form of energy that is related to the movement of molecules. Once the electromagnetic waves that emanate from the sun hit an object, these will excite the molecules of the object, triggering movement. The movement of the molecules is then referred to as heat.