What is the fine-grained topic of the following text: Stressing that the ratio of installed power stations to peak demand in Tehran is lower than the national average, Khoshkholq said while Iran’s total power stations have a load 2.5 times bigger than the country’s peak consumption, the ratio stands at 1.5 times in the capital, which shows power outage is more likely in Tehran during peak demand hours. Only return the topic.
Power supply capacity and risk of power outage in Tehran