Harlowton is the home of Montana's largest wind farm which is, at times, the highest producing facility in the U.S. The Judith Gap Wind Energy Center is located midway between Harlowton and Judith Gap. Constructed by Invenergy Services in 2005, the 90-tower wind farm has annual output around 450,000 megawatts. A turnout with informative kiosks on Highway 191 is under construction.