This time of year, people are lighting up the neighborhood with Christmas lights everywhere you look. And every year, these holiday displays are getting more ornate. It’s more than hanging a few wreaths and several strands of lights. Americans are acting more like Clark Griswold every day. We’re not only trying to outshine our neighbors, but we’re trying to outdo ourselves. And even with the advancement in lighting technology, which is more energy-efficient, we’re consuming more power each year…