with Berwick Community Development Trust who agreed on the installation of a 500 kW Enercon turbine near the A1. The Trust now has an income of £60,000 a year (increasing) after the turbine was installed in 2014. CoRE supported Oakenshaw Community Association setting up a 500 kW wind turbine near Durham. The turbine begun operating in 2014 and the Association now receives substantial yearly income. Unity Wind Ltd is an industrial and provident society that intends to install two 2MW wind turbines at North Walsham in North Norfolk. Its key aim is community wind turbines and run by community investment and for financial benefit to the community. United States In 2009, the National Renewable Energy Laboratory published a report that identified three different types of community wind projects in the United States. The first model describes a project owned by a municipal utility, such as the Hull Wind Project in Massachusetts. The second model is a wind project that is jointly owned by local community members, such as the MinWind Projects near Luverne, Minnesota. The third type is a flip-style ownership. This model allows local investors to partner with a corporation in order to take advantage of Production Tax Credit federal incentives. Flip projects have been built in Minnesota and Texas. Business models Community shared ownership In a community-based model, the developer/manager of a wind farm shares ownership of the project with area landowners and other community members. Property owners whose land was used for the wind farm are generally given a choice between a monthly cash lease and ownership units in the development. Cooperative A wind turbine cooperative, also known as a wind energy cooperative, is a jointly owned and democratically controlled enterprise that follows the cooperative model, investing in wind turbines or wind farms. The cooperative model was developed in Denmark. The model has also spread to Germany, the Netherlands, Australia and United Kingdom, with isolated examples elsewhere. At a European level, REScoop.eu advocates for renewable energy cooperatives to have fair access to the market, linking individual cooperatives and federations under its umbrella, representing around 1,000,000 citizens and 1,500 cooperatives. Municipal Some places have enacted policies to encourage development of municipally owned and operated wind turbines on town land. These projects are publicly owned and tax exempt. An example is the Hull Wind One project in Massachusetts' Boston Harbor in 2001. A 660 kW wind turbine was installed,