In 2004, a large share of natural gas reserves in Iran were untapped. The addition of new hydroelectric stations and the streamlining of conventional coal and oil-fired stations increased installed capacity to 33,000 megawatts. Of that amount, about 75% was based on natural gas, 18% on oil, and 7% on hydroelectric power. In 2004, Iran opened its first wind-powered and geothermal plants, and the first solar thermal plant is to come online in 2009. Iran is the third country in the world to have developed GTL technology.
When did Iran open its first wind-powered plants? When did Iran open its first geothermal plants? How much did Iran's installed capacity of power increase to after it added new hydroelectric power in 2004? How much of Iran's 33k megawatt installed capacity was based on natural gas?  How much of Iran's 33k megawatt installed capacity was based on oil? 