Incidentally, the IMF article also gives a perfect justification for their work on nuclear energy, without actually saying so.

IMF Survey online: If Iran sold more oil and gas on international markets, would that generate a lot more revenue than if they sold it domestically?

Zytek: Yes. At such low prices, domestic demand for energy in Iran has grown very rapidly, and it is increasingly difficult to have energy resources available for export. With the price reform, you will dampen domestic demand, which means more efficient energy use domestically, more energy available for profitable exports, and higher revenues for the country.