Electricity doesn't come free, after all—which is why Rob Cockerham armed himself with a power meter and worked out exactly how much his neighborhood was spending on electricity charges for its Christmas lights. Here's a rundown of how much you're spending per hour. Calculations assume that electricity costs 12¢ per kilowatt hour.
A Small Tree
Around 15 watts = 0.2¢ per hour.
Image by ilmungo under Creative Commons license
A Dumb Animal Sculpture
Around 100 watts = 1 ¢ per hour.
Image by lizjones112 under Creative Commons license
A Big Tree
Around 250 watts = 3¢ per hour.
Image by Justin Lee under Creative Commons license
A Hundred Incandescent Outdoor Globe Lights
Around 350 watts = 4¢ per hour.
Image by eggiepooh under Creative Commons license
A Modest House Like This
Around 2,400 watts = 28¢ per hour.
Image by Rob Cockerham
An Insane House Like This
Up to $686 per hour (but much less if you use LEDs).
Image of the The Faucher Family house in Delaware