how much electricity do christmas lights use

The amount of electricity used by Christmas lights can vary depending on the type and number of lights, as well as the length of time they are used. Generally, LED Christmas lights are the most energy-efficient option, using about 10-20% of the energy used by traditional incandescent Christmas lights. According to the U.S. Department of Energy, if every home in America replaced one string of 50 incandescent Christmas lights with a new LED string, it would save enough electricity to power almost 200,000 homes for a year.