The college has met its goal in the American College & University Presidents’ Climate Commitment and declared itself climate neutral. That means—essentially, with some caveats—that the college has zero greenhouse-gas emissions.
After signing the climate commitment, Colby set a goal of reaching climate neutrality by 2015—a date far sooner than most other institutions that had signed. Only three other colleges have achieved climate neutrality under the commitment: the College of the Atlantic, Green Mountain College, and the University of Minnesota at Morris. (However, the College of the Atlantic may no longer be climate neutral—more on that below.)