wing, opened in 2013 to display the recently donated Lunder Collection of American Art. The gallery space in the museum now exceeds 38,000 square feet, surpassing the Portland Museum of Art and making it the largest art museum in Maine.
=== Sustainability ===
In the fall of 2009, Colby launched Green Colby to highlight Colby's environmental policies, including its carbon footprint, conservation, student-led initiatives. The school has signed a number of official agreements to reduce its environmental impact, including the Maine Governor's Carbon Challenge and the American College and University President's Climate Commitment (ACUPCC). As of April 2013, Colby became the fourth institution of higher education to achieve campus carbon neutrality.
All of the school's electricity comes from renewable sources, including hydro and biomass, with 10 percent of campus electricity provided by an on-campus cogeneration turbine. The college has stated that all new buildings will comply with a minimum LEED silver standard, …
