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Light bulbs turned off by volunteers through Spring 2022

Approximate tons of carbon dioxide equivalent saved through Spring 2022

Approximate dollars saved in energy bills through Spring 2022

Not in use? Turn off the juice!

iSEE’s Illini Lights Out (ILO) program demonstrates the immense energy-saving impact of simply turning off the lights when you leave a classroom, lab, or study space. On a few Friday nights each month, volunteers gather to form mini lights-out brigades and tour campus buildings recording how many lights are left on (and shutting off as many as they can, of course). Volunteering takes about an hour and a half, and there are always snacks afterward! Thanks to a grant from the Student Sustainability Committee (SSC), ILO has multiple events you can take part in each semester!

Dates for Spring 2022

iSEE hosted six ILO events in Spring 2022:

  • Jan. 28 … thanks to our ~60 volunteers, who turned off 2,781 bulbs in 20 buildings!
  • Feb. 11 … thanks to our more than 125 volunteers, who turned off 4,297 bulbs in 26 buildings!
  • Feb. 25 … thanks to our more than 193 volunteers, who turned off 2,916 bulbs in 26 buildings!
  • March 25 … thanks to our more than 140 volunteers, who turned off 4,077 bulbs in 33 buildings!
  • April 8 … thanks to our more than 172 volunteers, who turned off 4,068 bulbs in 41 buildings!
  • April 29 … thanks to our more than 97 volunteers, who turned off 3,742 bulbs in 41 buildings!

Fall 2021 wrap-up

Thanks to the fantastic work of more than 590 student volunteers at our four dates during the fall semester!

About ILO

Illini Lights Out began as a one-off event organized by iSEE’s Energy Conservation and Building Standards SWATeam in Spring 2016 — at which students managed to turn out 1,500 lights in just 40 minutes — and expanded to a monthly happening during 2016-17 with the support of a grant from the Student Sustainability Committee (SSC).

Read more about the 2016-17 Illini Lights Out efforts.

Interested in a Lights Out event at your University? Email us at for tips and tricks on how to get started.


Contact Us


Office phone: 217-333-4178