An Effective Approach to Reduce Environmental Pollutants by Replacing Fossil Fuels with Biofuels through Imposing Social Costs and Emission Limits on a Hybrid System in Iran ( A Case Study)

An increase in global temperature, the vital need to reduce environmental emissions resulted from greenhouse gases, and the nonrenewablity of those energy resources have led to a change in attitudes and a turn to deploy advanced technologies and renewable energy resources as an alternative in electric power generation equipment. However, renewable energy resources are not reliable. In fact, the non-reliable nature of these resources has caused the deployment of diesel generators as a backup resource to cover loads in emergency situations. Among these non-reliable resources, biofuels as a substitute for fossil fuels in diesel generators not only stop the emissions of pure CO2 and other toxic pollutants in the air but also save money in the future. In this study, it has been tried to preserve technical specifications and the reliability of system by adding a hydroelectric power plant in addition to wind and solar systems. Furthermore, the use of biodiesel (biofuel) as an alternative in diesel generators can help identify an optimized autonomous hybrid system in terms of minimum costs while considering social costs and emission limits by Homer software of. Vanaei village in Lorestan province, Iran, is presented as acase study.