In April 2003, Macalester installed a 10 kW Urban Wind Turbine on campus thanks to that year's senior class gift donating the installation cost and Xcel Energy donating the tower and turbine. MacCARES is developing a proposal for Macalester to invest in a Utility-Scale Wind Turbine in the range of 2MW. Other projects include the Eco-House, a student residence with a range of green features and research opportunities; a rain garden that prevents stormwater from running off into groundwater, a bike share program, and a veggie co-op. The Class of 2008 designated its senior class gift to a Sustainability Fund to support initiatives to improve environmental sustainability on campus and in the greater community. On January 1, 2013, Macalester started campus composting.