Kiplinger, the personal finance site, offers a wonderfully geeky formula to calculate a holiday power bill: (wattage/1000 x time in hours) x cost per kWh in cents = cost to run Christmas lights For ...

This year, he has around 35,000 lights across his home and front yard and he has 19 songs in his holiday light show, lasting roughly 146 minutes.

This year, he has around 35,000 lights across his home and front yard and he has 19 songs in his holiday light show, lasting roughly 146 minutes.

You may recall that the Griswold patriarch of "National Lampoon’s Christmas Vacation" set out to stage the brightest house on the block, armed with 25,000 Italian twinkle lights.