Founded in 1834, GMC is a residential college with 850 students. A century ago, wood from local forests was the main source of fuel to heat the campus buildings, and the college farm supplied the dining hall with produce. Today the College has returned to this more sustainable way of doing business. Since 2010, the most of the heat and hot water for central comes has come from a biomass plant burning locally harvested wood chips. Through ongoing energy efficiency projects campus-wide and innovative methods to increase the efficiency of the biomass plant, GMC aims to achieve more than a 50% reduction in on-site greenhouse gas emissions in the near future, using 2007 as a baseline. The College has been climate neutral since 2011 from the purchase of local Cow Power offsets.