Kempegowda International Airport is an international airport serving Bengaluru, the capital of the Indian state of Karnataka. Spread over 4,000 acres (1,600 ha), it is located about 35 km (22 mi) north of the city near the suburb of Devanahalli. It is owned and operated by Bengaluru International Airport Limited (BIAL), a public–private consortium. The airport opened in May 2008 as an alternative to increased congestion at HAL Airport, the original primary commercial airport serving the city. It is named after Kempe Gowda I, the founder of Bangalore. Kempegowda International Airport became Karnataka's first fully solar powered airport, developed by CleanMax Solar.