The 25th annual Energy Fair is an event that started with humble beginnings.
"It started in 1990 with just a few hundred people," Events Coordinator Ellie Jackson said. "It's grown over the years to about 18,000 people."
And through this weekend, those thousands of people will see demonstrations and exhibits from green building, solar and wind energy, to electric cars. Kevin Smith managed to build a custom-built car of his own. He wanted to build the world's first 100 miles per gallon car. He managed to go a little further, and ended up creating the first 200 miles per gallon vehicle instead.
"Smart energy. That's what we need to look at," Smith said. "I know the automotive industry is going to be a big part of that. 45 percent of our energy consumption is used in our cars."
And while it may be the energy fair, there's still plenty of food, local drinks and entertainment to take in, For many in attendance, the fair's significance extends beyond Custer.
"It can be an exemplary place for the world. It can be a proving ground," said Carol Hale.
The fair is a place for people to connect, learn and discover new ways to use alternative energy today for sustainable solutions tomorrow. There's still plenty of time to take a look; the fair runs through Sunday on Deer Road in Custer - which is about 10 miles east of Stevens Point.