Solar radiation can be converted to useful energy by using various technologies. Hot water can be provided by using of the collectors. Residence buildings and offices can be designed based on Passive Solar features to provide space heating and lighting requirements, which can help to enhance contribution of solar energy in the human life. Solar thermal- electric defines by since solar radiations to be concentrated by special mirrors to provide high temperature heat to produce electricity power. Solar Thermal systems include: solar hot water heating systems, solar drying, solar space heating & cooling, solar desalination, solar detoxification, solar heat pump, solar pumping, and day lighting.
Solar photovoltaic (PV) energy is defined by conversion of sunlight into electricity energy with using of photovoltaic (PV) modules. Most of the photovoltaic modules can be mounted on the facades and roofs of the buildings. Above renewable energy resources can have various advantages and disadvantages. One of the most important factors during the processes energy
conversion in terms of cost and feasibility can be more effective on the popularity in usage of the renewable energies.
Solar PV Energy is reliable, abundant, environmentally friendly, has a decentralized installation, low maintenance, clean, light weight, overlap with IC technology, long life (more than 25 years) and above of all, the majority is manufactured from silicon which is the most abundant element in the earth’s crust, and after start-up it can produce electricity in a low price. Annual Solar radiation incident at the earth’s surface is over 10000 times more than total primary global energy consumption, in other words, total primary energy consumption is less than the solar radiation incident at the earth’s surface in one hour. Rate of solar radiation depends on the latitude of sun and climate in different zones on earth. Amount of solar energy varies based on the location and season per month, and as well, amount of solar energy varies based on location.