Cumulative project emission reduction up to 2030 is estimated between 53.8 to 192 Million ton CO2. It is depending to the progress of power sector efficiency improvements and grid loss reduction which are under implementation by power authority, which will be affecting the grid emission factor. With respect to the gradual improvement in grid emission factor, the cost of conserved carbon for the project is varied between 0.61 to 2.16 USD/ton CO2. The lowest value will be occurred when the power efficiency improvement and grid loss reduction projects objectives is fulfill completely.
Currently the national grid emission factor for CO2 is about 0.715 Kg/KWh.
1. Increasing the power supply security: The electricity demand is growing with 8-10% every year in Iran and government have to install 8000 MW new capacity every year with cost of about 8 Billion USD. So with respect to the lack of financial resource, Power Authority suffers from secured supply of electricity, especially in hot seasons.
2. Increasing the gas supply security: 65% of the power plant in Iran runs by natural gas, any efficiency improvement in irrigation system may cause less demand for electricity and therefore, less natural gas consumption by power sector. This is increasing the supply of natural gas to other consumers. It is to be noted that in winter time government is suffer from secure supply of natural gas to consumers in industry.
3. Eliminating the adverse impact of climate change on power supply: The hydro-power contributes about 7% of total power generation in Iran. Recent drought had a negative impact on hydro power generations. Also the result of Climate modeling and Change Study (Iran’s Second National Communication to UNFCCC, 2010) reveals that in next decade's country will be suffer from drought and decreasing in rainfall by 9%. So the power sector will be suffered from secure supply of electricity as result of decline in contribution of hydro power. Efficiency improvement in irrigation systems minimizes the adverse impact of climate change on secure power supply.
4. Improvement the welfare in local and national level: at local level, any improvement in irrigation systems efficiency may reduce the electricity bill of the local farmers and have a positive impact on their income level and welfare. At national level, based on recent study by Iranian Fuel Conservation Organization (IFCO,2014), the investment in energy efficiency is 3 times cheaper than investment in installation of new facilities in Iran, so the government may utilizes the saved amount in other development projects. Also the energy carriers is highly subsidized in Iran and agricultural electricity have the lowest price among other energy carriers, therefore government pays a lot of subsidy for providing electricity to farmers. Any improvement in efficiency of irrigation systems may increase the financial resource of the government, and then they can to invest more in infrastructure development.
5. Improvement local and global environment: As are mentioned before, the CO2 emission factor of grid and grid loss are about 0.715 Kg/KWh and 18%, respectively 1 MWh electricity saving in end-use may reduce about 872 Kg Carbon dioxide. Also the grid emission factor for NOx, SOx and CO is 2.894, 3.915 and 0.694 gr/KWh. So any improvement in energy efficiency of end-use may improve local and global environment. From local environment point of view, some of power plants are located close to the mega-cities which suffered from air pollution, any improvement in end-use electricity consumption, will improve the air quality and health conditions in the mega-cities.
 The Comiend Margien (CM) grid CO2 emission factor is 0.715 Kg/Kwh, while the average gride CO2 emission factor in 2013 is about 0.767 Kg/KWh ( 2013 Energy Balance Yearbook, MOE, 2015).