context: The economy of Himachal Pradesh is currently the third-fastest growing economy in India.[citation needed] Himachal Pradesh has been ranked fourth in the list of the highest per capita incomes of Indian states. This has made it one of the wealthiest places in the entire South Asia. Abundance of perennial rivers enables Himachal to sell hydroelectricity to other states such as Delhi, Punjab, and Rajasthan. The economy of the state is highly dependent on three sources: hydroelectric power, tourism, and agriculture.[citation needed]
question: ఇతర రాష్ట్రాలకు జలవిద్యుత్తును విక్రయించడానికి హిమాచల్కు ఏది వీలు కల్పిస్తుంది?
answers: Abundance of perennial rivers