Greenstar North America, also known as Greenstar, provides a range of recycling solutions. It is one of the leading, private companies that offers services for the recycling processing and commodity upgrade and trading sectors of the solid waste market in the United States. Established in 1996, the company is a part of NTR. Greenstar North America has operations throughout Europe and the United States. It also has various sister companies, including Stirling Energy Systems and the Wind Capital Group. The company specializes in the processing of recyclable materials, such as paper, plastic, metal and glass. Greenstar North America has locations in Connecticut, Georgia, Illinois, Iowa, Michigan and New Jersey.