H Samani - Technical and Vocational Training Organization Razavi Khorasan: Mashhad, Iran
M.R Heidary - Department of Science and Research Branch of South Khorasan, Islamic azad university: Birjand, Iran

Nowadays, the widespread use of fossil energy has created many problems in the world such as gradual splitting of Ozone layer, increasing greenhouse gases, increasing environmental pollution, global warming, and etc. Today, decreasing the effects of these resources is one of the main priorities in energy management. In addition to efforts for optimal consumption, we should look for some other alternatives such as renewable energies for these resources. One of the main renewable energy is the sun. Almost 70% of this energy is stored in the sea. Several different methods are proposed to extract this energy from seas such as wave power plants, temperature difference, difference in salt concentration and etc. One method of electricity extraction from seas is tidal power plants. In this paper, we also explain origin of tidal energy and the energy amount that can be extracted by this method. Explanation about different methods of usage, production, advantages and disadvantages of these power plants and feasibility of them in our Iran.

Gravity Between the Moon and The Earth, Renewable Energy, Tidal Energy, Tidal Power Plants, Tidal Turbines