1 Lighting Quick Facts: Lighting accounts for ~32% of MIT’s electricity use Accounting for about 26,000 tons of CO2 emissions in 2007 Which is the total annual energy use of about 1800 Cambridge residents At a total cost of $8.6 million in 2007 During approximately one-third of the time that the lights are on in a room, it is unoccupied Huge potential savings!

2 ACTION: Turn off the lights whenever a room is unoccupied!! Room Type% of time on% of time occupied Classroom2013 Lab3616 Office3323 Restroom7134 Compiled by Closing the Loop during a study of Buildings 56 and 16 during June 2008

3 sub-ACTION: Be vocal about the possibility of other lighting options in your space We don’t always have the ability to choose what type of lighting we use on campus BUT- we can talk to those who are in control about other options  $100 million in cost-saving facilities improvements have already been identified, including many lighting improvements CFL retrofits Motion-sensors Dimming and daylighting sensors  Advocate for MIT to invest in a greener campus! Please be courteous to your facilities representatives