The Green Cup is a 4 week competition to reduce energy use among South 40 Residential Colleges, on-campus apartments and fraternities that takes place February 1-28, 2013. Residential Colleges and fraternities compete to reduce their energy usage by a certain percentage below a baseline. At the end of the 4-week period, the winner in each league receives a prize! See How to Win for more information on prizes and how to earn points.
2013 Final Standings
| Fraternity | ||
| Sigma Nu | 1st | 28 pts |
| Sigma Chi | 2nd | 24 pts |
| Kappa Sig | 3rd | 11 pts |
| Beta/AEPi | 4th | 8 pts |
| TKE/House 11 | 4th | 8 pts |
| Phi Delta | 6th | 7 pts |
| SAE | 7th | 0 pts |
| Theta Xi | 8th | 0 pts |
| South 40 | ||
| Liggett/Koenig | 1st | 18 pts |
| RUSoFo | 2nd | 16 pts |
| Lee/Beau | 2nd | 16 pts |
| WGE | 4th | 14 pts |
| JKL | 4th | 14 pts |
| Brookings | 6th | 13 pts |
| HIG | 7th | 10 pts |
| Crow | 8th | 9 pts |
| Park/Mudd | 8th | 9 pts |
| Eliot | 8th | 9 pts |
| North Side | ||
| The Village | 1st | 8 pts |
| Millbrook/Village East | 2nd | 6 pts |
