It is expected that fuel price increase for power plant uses would lead into an electricity price increase and consequently electricity production, emissions pollutions and greenhouse change. To quantify these effects we develop a system dynamics model for the electricity market in Iran consisting of demand, price and generation modules. The purpose of this paper is to investigate the effects of fuel reforming plants on emissions pollutions and greenhouse. To quantify these effects we develop a system dynamics model for the electricity market in Iran and this model is solved and simulated using POWERSIM software. According to the results, , if the subsidized prices for power plant fuel uses are still maintained, in the framework of the model Emissions pollutions and greenhouse, assuming growth rates at the end of period 5 and 8 percent, respectively, in the (-%1) and 3%. With modified fuel delivery price to power plants, the amount of environmental pollutants, assuming growth rates at end of period 5 and 8 percent, respectively, in the (-1) percent and (3) percent. In the final part of the paper, effect of increase on Power Efficiency in the model has been studied, Assuming growth rates of 5 and 8 percent, emissions pollutions and greenhouse rate are expected to reach the end of the period to (-0.6) percent and (+0.4) percent compared with price reform, respectively.