The major industries in Bihar are Agro-based such as fruit processing, rice mills, oil mills, etc. Rice mills located in Sasaram, sugar mills located in West Champaran district and fruit processing units in Muzafarpur are the main agro based processing units . One of the biggest oil refineries in the country is based at Barauni in Bihar. Three thermal power stations at Kanti, Kahalgaon and Barh are also located in the state.