C3 started in the 2006/07 school year and it has been an annual event at Mount Allison every since.  C3Competition

 

The reductions have been amazing across the board. Past winners are:

2014/15
Mount A winner: To be determined
Maritime winner: To be determined
 
2013/14
Mount A winner: Windsor Hall (-29.6% change)
Maritime winner: Windsor Hall, MTA (-29.6% change)

2012/13
Mount A winner: The Anchorage (-31.1% change)
Maritime winner: The Anchorage, MTA (-31.1% change)
 
2011/12
Mount A winner: Hunton House (-27.0% change)
Maritime winner: Hunton House, MTA (-27.0% change)

2010/11
Mount A winner:  Bennett/Bigelow House (-23.4% change)
Maritime winner:  MacKinnon Hall, StFX (-24.3% change)
 
2009/10
Mount A winner:  Harper Hall (+3.8% change)
Maritime winner:  Aitken House, UNB (-24.8% change)
 
2008/09
Mount A winner:  Edwards House (-18.0% change)
Maritime winner:  Not applicable

 
2007/08
Mount A winner:  Hunton House (-26.0% change)
Maritime winner:  Not applicable

 
2006/07
Mount A winner:  Windsor Hall (-24.0% change)
Maritime winner:  Not applicable