Portland, Oregon 2021-12-03 09:33:09 –
(NEXSTAR) – Whether you’re wrapping your Christmas tree in a single light or decorating your home with a display like Grizzwold, the type of light you choose can have a huge impact on your electricity bill.
Walking down the Christmas light aisle can be overwhelming. LED or incandescent lamp? Mini, C9, C7, or something else? If you can’t decide, deciding how much it will cost to run each strand may shake you.
First, mathematics. Electricity usage is charged in kilowatt hours, but lights carry a certain wattage. To determine the power usage of a series of lights, follow these steps: This formula:
- Multiply the wattage by the number of hours the light is on per day and divide by 1,000 to get kilowatt hours, or kWh per day.
- Calculate the daily cost by multiplying the daily kWh by the cost of electricity usage (listed in the electricity rate).
- Multiply the cost per day by the number of days the lights are on.
NS Latest data According to the US Energy Information Administration, the national average price of electricity for customers in September 2021 was about 14 cents per kilowatt hour. The rates vary from state to state, and people in Alaska, California, Hawaii, and New England cost more than people in the Midwest.
Well, compare. Below we compare three different styles of light strands (mini, C9, and C7) based on whether the bulb is an LED or an incandescent lamp. In these comparisons, each cost is based on 6 hours of usage per day for 30 days.
Strand 300 white mini LED lights A typical green wire is 21 watts, but the same style Incandescent light bulb 72 watts. Using the above formula with a national average of $ 0.14 per kilowatt hour and a display season of 6 hours a day for 30 days, using a strand of mini LED light costs about 52 cents. The number of bulbs is the same, but incandescent lamps cost about $ 1.81.
If you are looking at the strands 100 lights C9 LED light At 4.8 watts, it costs you about 12 cents, but a 25-light strand C9 incandescent lamp 175 watts cost about $ 4.41. For 25 lights LEDC7 strand For 21 watts, the cost is about 52 cents, Incandescent 125 watts costs about $ 3.15.
LED light strands tend to cost more in stores (the ones referenced above range from about $ 30 to $ 76 compared to incandescent lamps ranging from $ 9 to $ 10). , Incandescent lamps put a heavy burden on electricity bills over time.
How much does a strand of Christmas lights add to your electric bill? Source link How much does a strand of Christmas lights add to your electric bill?