The Spirit Lake School Board discussed options for decommissioning one of the two wind turbines on the school's property.
Spirit Lake's Director of District Operations David Dau said the smaller of the two turbines — a Wind World 250 — was built 31 years ago, and he said that model has an average lifespan of about 25 years.
"It has been significant in saving us money," Beck said. "I think the people that did this when they did it were really smart. It's paid for itself."