Beginning on Black Friday each year, the intensity of light in the American suburbs increases by 30 to 50 percent, and does not return to normal levels until after the new year. The reason? The Christmas lights, which are so common as to be directly observable from space, according to NASA.
All additional lighting costs money, and while you plan your own Griswold masterpiece, you can ask what the impact will be on your vacation. the utility bill will be.
We know, for example, that LED lights are much more efficient than traditional incandescents, but how much difference does that make over the course of a season?
For that purpose, we looked up in watts of a series of common Christmas lights types, and ran some numbers to see how much it would cost to run them for a typical holiday season.
The immediate conclusion is that old style incandescent bulbs cost much more to run, and this is especially true for larger bulbs. A row of 25 incandescent C9 bulbs, the largest and richest ones that are often used outdoors, use 1
The price differential for the smaller mini-bulbs is less extreme but still significant: 100 incandescent minis will cost approximately $ 3.53 for a season, while the LED minis will cost only 41 cents.
Let's say you want to run a total of 10 strings of 100 mini lights this year. Running the incandescents will cost you about $ 35 over the course of the season, while switching to a full LED will cost a little over $ 4.
However, the actual savings are obtained if you use the large C9 lights. Running four incandescent 25 C9 wires will cost more than $ 60 for the season. If you change these for LED, your electricity bill is reduced to just over 80 cents.
A recent study of night satellite images concluded that as cheaper LED lighting is expanded, consumers respond by not pocketing the savings, but rather by adding more light. That also applies to Christmas lighting. Just think: for the price of running 25 C9 incandescent lights for a season, you could run a whopping 1,825 LED lights of the same size.