For instance, you could kiss your kids on their heads rather than their cheeks for a few days. You could ask your spouse to do bedtime stories and baths for a few nights. But obviously, you canât be so careful in your efforts to prevent germs from spreading that you feel like youâre shunning your kids.
If you grow short plants, you should definitely try LEDs. 1  The first series of costs on the chart represents an electricity cost of $0.12/kwH, or 12 cents per kilowatt hour (a kilowatt hour is 1,000 watts being used for one hour). 2  $0.12/kwH was the US national average cost for electricity in 2011.
wattage x hours used Ã· 1000 x price per kWh = cost of electricity For example, let's say you leave a 100-watt bulb running continuously (730 hours a month), and you're paying 15Â¢/kWh. Your cost to run the bulb all month is 100 x 730 Ã· 1000 x 15Â¢ = $10.95.