Christmas Light Wattage: LED vs. Incandescent Lights
Whether you prefer delicate light strands or imitate Clark Griswold in Christmas Vacation, holiday lights are a part of our traditions.
For most people, once they start, the light displays continue to grow, year after year. After all, who can pass up the deep discounts at those after-Christmas sales? But your electric bill will continue to grow too, unless you buy energy efficient LED holiday lights.
Bottom line? It’s time to toss out your old strings of lights. Today’s LED Christmas lights will add 90% less to your electric bill vs. traditional lights. If you’re looking to save (or accurately assess the full wattage of your Christmas decorations), our tools below will help you calculate what you generate each year and understand how your electric bill reflects these costs.
Incandescent vs. LED Christmas Lights – What’s the Difference?
Comparing regular Christmas lights vs. LED? While LEDs were initially known for their harsh glow, the newest models have little difference in appearance vs. incandescents.
The three key differences between incandescent and LED Christmas Lights are: (1) energy efficiency, (2) heat and (3) longevity. It’s all a factor of how the bulbs generate light.
Regular Christmas light string bulbs have a metal filament inside. Electricity heats the filament to produce light, but that also makes the bulbs too hot to handle. The filament is fragile, which makes them burn out quickly.
LED Christmas lights use a light-emitting diode (i.e., an LED) to generate light. That means less power usage, no heat and long life.
LEDs consume 80 to 90 percent less power than compared to incandescent lights, plus they last up to 100,000 hours (around 10 years!).
Electricity Cost Comparison of LED vs. Regular Christmas Lights
And the chart below shows how much less you will spend on your Christmas lights when you use LED bulbs vs. traditional. The savings are substantial!
Power Usage for Christmas Lights
| Item | Incandescent Watts | LED Watts |
|---|---|---|
| 400 ft C9 String on Roof | 2800 Watts | 385 Watts |
| 200 ft C9 String in Yard | 1400 Watts | 192 Watts |
| 10 Mini LED Strings for front yard trees | 403 Watts | 47 Watts |
| 15 Mini LED Strings for Christmas Tree | 612 Watts | 72 Watts |
| 1 Wreath with mini lights | 63 Watts | 7 Watts |
| Total Watts | 5278 Watts | 702 Watts |
| Total Kilowatts | 5.278 kilowatts | .702 kilowatts |
| Number of Hours Daily | 6 hours | 6 hours |
| Number of kWh Daily | 31.67 kWh Daily | 4.21 kWh Daily |
| Days Thanksgiving to January 5th | 41 days | 41 days |
| Total kWh for holiday lighting | 1,298.5 kWh used | 172.69 kWh used |
| Cost (at 16¢/kWh) | $207.76 | $27.63 |
How Much Will Christmas Lights Add to My Electric Bill?
To calculate how much you will spend on electricity for Christmas lights, follow this step by step process:
How to Calculate Total Electricity Cost for Christmas Lights
Identify the type of Christmas lights and light types you will need. Measure your areas to determine how many light strings you will need for your home. Include any lights you want on the roofline, shrubs, trees, plus interior lights.
Identify the total wattage of your Christmas lights. Use the internet or visit your local hardware store to find the wattage label on the lights you want.
Convert total watts to kilowatts. Divide total watts by 1000 to convert to kilowatts.
Estimate total daily usage of your lights and number of days you will have them lit. For example, if you have your lights on from dusk until bedtime, you may have your lights on for 6 hours a day.
Calculate the number of kilowatt hours you will use. Number of kilowatts * # hours per day * # of days = total amount of kilowatt hours you will use.
Multiply total kilowatt hours by your average price per kilowatt hour (kWh).
How much electricity does a typical 215 watt 66Ft Outdoor Christmas Lights, 100 LED C9 String Lights use?
| Usage | |
|---|---|
| Daily Usage | 1.3 kWh |
| Monthly Usage | 38.7 kWh |
| Annual Usage | 464.4 kWh |
How Much Can I Save By Switching To LED Christmas Lights?
Switching your traditional Christmas lights out with newer LED Christmas lights can save you a surprising amount of money.
- If you have a typical modest Christmas display on your home, your energy costs would be approximately $10-$15 for incandescent lights, or around $2 for LEDs for the holiday season.
- For heavy usage where people slow down to see your house, the typical energy costs would be approximately $115 for traditional lights versus $15-$20 for LED lights.
- For a jaw-dropping display where people actually make your house a destination to admire your holiday cheer, the costs could be well over $300 with traditional lighting versus a modest $40-$50 with LEDs.
Benefits of LED Christmas Lights
It’s clear that LED holiday lights are the front runner in the competition for economical Christmas decorations, but that’s not the only benefit they have.
Here are some other benefits of LED Christmas lights:
- More lights. With traditional lights, you can only connect four or five strings of lights together on one outlet, limiting the amount of lights you can safely use in one area. With LED lights you can safely connect 20 plus light strings together.
- More colors. LED Christmas lights come in a wider range of colors, are generally brighter than incandescent light strings.
- More safety. LED Christmas lights don’t produce any heat, unlike incandescent bulbs.
- Long lasting. LED light sets are generally rated to last decades.
Christmas Lights and Electrical Safety
According to the National Fire Protection Fire Association, nearly half of home Christmas tree fires were caused by faulty electrical distribution or lighting equipment.
Here are tips to maintain safety in your home:
For indoor decorations, make sure any extension cords are rated for the number of lights you are plugging in and the distance the cord is running.
For outdoor decorations, use an extension cord that’s rated for outdoor use and based on how far the power needs to travel.
Lastly, always turn your indoor and outdoor lights off at night. That helps ensure your safety. Plus it keeps your holiday light bill lower.