This is the estimate for Mumbai just think about other metro and urban cities and how much impact it is creating on environment, Government must launch more environment friendly building models/life model/social models and the action must start from TOP to BOTTOM. Government Top functionaries must be the first ones and set example in front of all. Secondly some famous celebrities must be engaged for this purpose and finally big corporate leaders must initiate to reduce AC use of their offices/factories/houses.
It also proves that we all should use renewable energy sources and it is really surprising that the common man pays for the consumption by rich peoples (AC's owner) because of overall rise in price. Just put some extra charges on building using centralized cooling system and give rebate to building using environment friendly systems. Also if possible force some big consumers to reduce their usage of AC's with immediate effect. Also put additional surcharge on AC's sale/manufacturing from right now as lower AC's cost is also responsible for this situation