The city of Rock Port has become largely energy self-sufficient. In April 2008, Rock Port claimed to be the first community in the United States to have its electricity 100 percent generated by wind power. Rock Port, which uses about 13 million kWh a year, has its power generated by the Loess Hills Wind Farm. The farm has four Suzlon 1.25-megawatt wind turbines. Excess power is sold to the Missouri Public Utility Alliance in Columbia, Missouri. The idea for the wind turbines came from the town's former mortuary worker, Eric Chamberlain. The farm was built by Wind Capital Group and is by far the company's smallest wind farm developed through January 2009. Wind Capital in 2008 built the bigger 50.4MW Cow Branch Wind Farm between Rock Port and Tarkio.