Since 2013, in partnership with Wes to Wes, all residential energy savings have gone directly to the financial aid raise the cap fund. From 2007-2014, the Sustainability Interns ran Do It in the Dark (DIITD), an energy competition between student residences. Over time, this competition lost effectiveness, so the Sustainablity Interns will be developing a new program in Fall 2015.
If you're looking for ways to conserve your energy use, the most impactful thing you can do is to reduce your use of heat and air conditioning. There are a lot of other ways to reduce your energy use, which you can read on the DIITD blog.
Stay tuned for more information!