External costs analysis electricity generation from fossil power plants

Fossil fuels that are use for power generation in power plants in recent decays are finishing. In addition they are lot of pollution in environment. This pollution different ways are human health and environment. This damage imposes negative external costs that exceed private cost of power plants. The main goal of this paper is to calculated the social cost of Iranian fossil power plants based on coefficient of EPA, world bank and DOE in 1383.social cost of fossil power plant are natural gas power plant, diesel, combine cycle and steam power plants are analyzed. Results show that social cost combine cycle is least and their efficiency is more.