Iran is turning to renewable energy forms in order to avoid the side effects of generating power in traditional ways. Just like many other countries, Iran has turned to renewable energies because traditional ways of power generation inflict serious harm to the environment. There is great potential in Iran for developing solar energy platforms. The country lies on the solar belt that is between 25 and 40 degrees northern latitude. Iran has 300 sunny days in a year. Approximately 70 percent of the Iranian soil is capable of exploiting solar energy. In the hottest parts of the country, it is possible to generate 6 kilowatt hours of electricity per square meter. Recently contracts have been signed with companies from Germany, England, China, Sweden, Austria and elsewhere to construct solar power plants. Also, Iran’s center for wastewater treatment in southern Tehran treats wastewater produced by 4,200,000 people. The wastewater goes through a number of filters where garbage and big particles are separated. It then receives air. Next, the mud required for biogas is formed in special tankers and biogas is produced.