In this paper is presented the possibility of using the renewable energy resources and promoting the renewable energy resources (RER) by feed-in tariff schema. `Feed-in' tariff is a description of a policy, a "tariff" used to purchase RER generated energy that is "fed" into or sold to the grid. Usually the price depends from the technology used such as wind, water, biomass, geothermal, etc. The Feed-in tariff is becoming the key policy tool used to shift the world's energy mix away from fossil fuels to renewable energies to address energy security of supply, climate change, and economic growth. Advantages of generation electricity from renewable resources are widely accepted even the technologies used are not economically competitive with conventional technologies.