1 / 7As temperatures rise in the summer months, households ramp up their use of fans, coolers, and air conditioners around the clock. Despite efforts to stay cool, the increased demand for electricity from these appliances, alongside constant usage of other devices like TVs and refrigerators, leads to a notable spike in electricity bills during April and May. Pinpointing the exact contribution of each device to this increase remains difficult.2 / 7The monthly cost of electricity for equipment depends on its wattage and usage. For instance, a device consuming 1000 watts for an hour equals 1 unit of electricity. Multiply the wattage by hours of use per month, then divide by 1000 to get kWh. Finally, multiply kWh by the electricity rate per kWh.3 / 7If a 100-watt device operates for 4 hours daily, it consumes 400 watt-hours (0.4 kWh) per day. Over a month (30 days), it totals 12 kWh (0.4 kWh/day x 30 days).4 / 7If the electricity rate in your area is Rs 8 per unit, then the total cost of running this device for a month would be Rs 96 (12 kWh x Rs 8 per kWh).5 / 7If a 1,000-watt device operates at the same rate of Rs 8 per unit, the monthly cost of electricity would be Rs 960 (120 kWh x Rs 8 per kWh).6 / 7If three 9-watt bulbs run for 10 hours, they consume 270 watt-hours (0.27 kWh) of electricity. Installing four 60-watt fans for 12 hours uses 2,880 watt-hours (2.88 kWh) of electricity.7 / 7Operating one AC with a capacity of 1600 watts for 5 hours consumes 8,000 watt-hours (8 kWh) of electricity.