Electricity is provided by BEST in the city, and Reliance Energy, Tata Power, and Mahavitaran (Maharashtra State Electricity Distribution Co. Ltd) in the suburbs. Most of the city's electricity from hydroelectric and nuclear is based. Electricity consumption is growing faster than production capacity. The largest telephone service provider is the state-owned MTNL, which held a monopoly over fixed lines and cellular services in place until 2000, and provides fixed line and mobile services WLL. Cellular telephone networks are long, and major service providers are Vodafone Essar, Airtel, BPL group, Reliance Communications and Tata Indicom. Both GSM and CDMA services are available in the city. The penetration of broadband Internet is increasingly in the city, with MTNL and Tata is the leading provider of service providers. Since 1995, many parts of the city also have access to the gas supplied by Mahanagar Gas Limited, which also provides compressed natural gas to 127 petrol stations.

Demographics

The Haji Ali Dargah is a famous landmark in Mumbai According to the 2001 census, the population of Mumbai is about 13 million inhabitants, with a population of the urban area exceeding 16 million. The World Gazetteer estimated 2007 population of the city and its surrounding metropolitan area at 13 and 20 million respectively. Population density is estimated at about 22000 people per square kilometre. There are 875 females per 1000 males all - which is below the national average, a situation common in Indian cities as many men migrate to cities from rural areas, leaving women and children behind.

The religions represented in Mumbai include Hindus (68%), Muslims (17% of the population), and Christians and Jains (4% each). The others are Parsis, Buddhists, Sikhs, Jews and atheists.

According to the 1991 census, demographic trends ethnic groups - Maharashtrians (42%), Gujaratis (18%), Northern India (21%), the Tamil people (3%), Sindhis (3%) Kannadigas (5%) and Other.

Mumbai has a large population polyglot like any other city in India. Marathi, the official language of Maharashtra state is widespread. Other languages are Hindi and English. A familiar form of Hindi, known as Bambaiya - a mixture of Marathi, Hindi, English and Indians invented some familiar words are spoken in the streets. English is widely spoken and is the main language of the city white-collar workforce. The overall literacy rate in the city is above 86%, higher than the national average.