Turning off light bulbs is essential to save energy. An average light bulb uses 75 watts of power per hour which costs on average 9 cents. So, for every light bulb you have on in our house for an hour, you add 9 cents to your energy bill. The average household uses 45 light bulbs. So if all the lights in your house were on for an hour, you would be using 3375 watts of power and have to pay $4.05. This may not seem like very much, but it adds up over time. If each of the 102 million of households in the United States had all the lights on in their house for 1 hour, 344,250,000,000 watts of power would be used. That's $413,100,000. That's a lot of money for Americans to be paying every hour while we're having economic problems. People spend an average of 8 hours at home while they are awake. So, if each household had all the lights in their house on the whole time they're home one day, they would be using 27000 watts of power and it would cost them $32.40. That's $3,304,800,000 down the drain every day and 2,754,000,000 watts of power. If every household turned thier lights off for one more hour every day for a year, we could save 125,651,250,000,000 and $1,507,815,000,000. Just by turning off the lights in our houses, we can save a lot of energy and money.