The Yoshida family in Waikele, Hawaii starts working on its Christmas lights display in July every year. The 2012 show, seen above, contains more than 20,000 lights and over a mile of electrical wiring, and it's all completely powered by a photovoltaic system that captures more than enough energy from sunlight during the day to power the display all night. (It is located Hawaii, after all.)
Like every other kick-ass light show mentioned here, the music is broadcast via FM radio so neighbors dont have to listen to it every night. The Yoshida family looks out for its community in more ways than that, though: It also accepts donations that are passed along to buy holiday gifts for children of struggling families.
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Kym Illmans version contains 41,000 light bulbs, 2,000 different light channels, and nearly 1.25 miles of cable. The display took 200 hours to set up, plus another 90 hours to program the lights to sync with the music. The Australian is no night-show novice, with Illmans past efforts raising more than $90,000 in donations for charity.
Unfortunately, the playful display was shut down after just three nights when visitors turned up in crowds 10 times larger than expected, creating both a safety hazard and a major annoyance for Illmans neighbors. Next year, he plans to light up a commercial area that can handle larger crowd capacities.