Your display size and choice of bulbs, whether incandescent or LED, will influence your energy bill the most. For example, a 100-count string of incandescent mini lights runs at 40 watts, while a 70 count of 5mm Wide Angle LEDs is approximately 4.8 watts total. In fact, because incandescent wattage is 80-90% more than LED wattage, the cost to power an incandescent can be up to 90x greater than powering an LED.
According to EnergyStar.gov, the average price of electricity is 11.3 cents per kilo-watt hour. For the power calculations below, we will use this figure per EnergyStar.gov, but you may choose to pull out your electric bill to use your actual price.
Want to know more about calculating light wattage? Visit our Christmas lights wattage guide and calculations page!
