Finding the power for future Griswold Christmas lightshows

It is that time of year when people put up their outside holiday lights and displays. Judging from our neighborhood, they are decorating more than usual.

In our country, 90 percent of individuals say they plan to celebrate the holidays this year. Total retail sales between Thanksgiving and Christmas are projected to reach $957 billion.

The setting for the National Lampoon’s Christmas Vacation is r...