Baloi is a 4th class municipality in the province of Lanao del Norte, Philippines. According to the 2007 census, it has a population of 44,366 people. It is also the home of the Agus IV Hydroelectric Powerplant (Located in Barangay Nangka; 18 kilometers from Iligan City). The first underground hydroelectric plant in Mindanao and the third in the Philippines, located 120 meters below ground surface. The plant is said to be sufficient to light a city more than 12 times the size of Iligan City or to run 20 cement factories.