Later on, you will realize that the costs will start to go down, since the energy stemming from the sun is free and available all the time. You should consider your budget by determining the area that needs to be covered with solar panels. Budget is vital so that you do not go overboard and overspend on things that you do not truly need. As soon as the heat is captured, people can put the energy into good use. 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 main reason for this is probably due to the fact that its main source of energy, which is the sun, is able to provide over 10,000 times more than the energy that our planet is able to produce. This helps show people that solar energy is one of the best alternative energy sources for the future. However, don t simply take my word for it. Some panels are intended for individuals living in places that has minimal sun, while other designs are specifically made to gather the most sun over the shortest span of time. About Price Learn how to compare between types to know how much you need to pay for. The prices of the solar panels will vary depending on the brand and the size. Ancient Greece built temples devoted to worshipping their sun deities, namely, Helio and Apollo. Also, the Greek s use of solar energy were not limited to religious purposes, as they even used the solar energy system to incorporate passive solar design in the construction of their houses. The Romans simply improved the Greek s design and also incorporated windows into their structures, allowing them to be able to trap more solar heat. The PV The PV or photovoltaic cell is also known as the solar cell. It is a device that readily converts light into electric current via the photoelectric effect. The device is based on the discovery of Alexandre-Edmond Becquerel who realized that a number of materials let go of electrons when these hit rays of photos straight from light, causing an electrical current.