These people in Lauderdale (USA of course) have gone to some trouble, and above all earned themselves the No. 3 spot on Nova's distinguished Best Xmas Lights countdown.
According to the creator of the video it only costs him an extra $40 in power... "I usually start in September, and use Halloween as my testing ground so I have 2 months to make improvements. I use 100% LEDs so power consumption is small, 1/5 of reg lights. My bill only went up $40 last December. 2 outlets run the whole show!"