The use of renewable energies in Iran is very important due to the limited fossil energy resources and the problems caused by greenhouse gas emissions. In 2015, more than 60 percent of the energy consumed in Iran was supplied by oil and gas. Given that Iran is one of the countries rich in renewable energy resources in the Middle East, the use of these resources can help reduce dependence on fossil resources, reduce pollutant gas emissions, increase energy security and economic development. This use can also lead to reducing production and maintenance costs, increasing production capacity and reducing air pollution.This book has four chapters, including:Chapter I, The need to study the use of renewable energies;Chapter II, Renewable Hybrid Power Generation Systems;Chapter III, The Role of the Leasing Industry in Advancing the Development of the Renewable Energy Market;Chapter IV, Examining the Impact of Renewable Energy, Technical Innovations, and Economic Growth on Carbon Dioxide Emissions and References.