Electrical energy has become essential for modern life and is used for personal comforts, entertainment, industrial and agricultural purposes, and transportation. While conventional fossil fuels currently provide most electricity, they are finite and cause environmental problems. Non-conventional renewable sources like solar, wind and biomass are more sustainable options. India's total installed power capacity is over 225,000 MW as of 2013, with thermal sources providing over half, while renewable sources account for 12%. Conserving energy reduces costs and environmental impacts, since less fossil fuels are used when generating the same amount of power. The Bureau of Energy Efficiency promotes conservation through policies, awareness campaigns and standards like appliance energy labeling.