Companies can also utilize alternative energy through purchasing agreements or via on-site installation of renewable energy sources. These options range from small to large operations. Phoenix Press, a tiny printing company in New Haven, Connecticut, installed a 100-kilowatt wind turbine in 2010 to cut its reliance on traditional power companies and get a green “image” edge in the competitive local market. Phoenix estimated a payback time of four years.41 Other companies, particularly ones producing green-certified products, purchase Renewable Energy Certificates (RECs), which are now widely available. For example, paper products giant Cascades, Inc. committed to purchasing 20,000 megawatt hours of wind-generated RECs to produce its North River tissue and towel products.42 Many energy utilities also provide their customers with the option to purchase a percentage of their electricity as “green power.” The premiums that utilities charge for green power are invested into the development of new renewable energy sources. Between 2000 and 2009 the average net price premium for utility green power has decreased from 3.48 cents per kilowatt hour to 1.75 cents per kilowatt hour.43 See EPA's Green Power Partnership website (www.epa.gov/greenpower) for more information on purchasing renewable energy from utilities.