Understand your electrcity bill and see where you can save on it. Using energy efficient devices and habits, you can slash your electricity bill by half or more. You are charged by units or kilowatt hours. A 100W bulb that is switched on for 10 hours uses 1kWh or 1 unit. In the top slab rate in bangalore this costs Rs 5.85. If you use that 100 W bulb for 4 hours a day for 30 days a month,  your usage is 12000 watt hours or 12kWh or 12 units in a month. This is about Rs. 36 per 100W bulb per month. Check the ratings on your electrical devices and observe how many units per month each device consumes depending on your usage. Use the on-line calculator to see how much each device is costing you per month. http://www.bijlibachao.com/calculators/online-electricity-bill-calculator-for-all-states-in-india.html#util

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