AES Indiana releases May window lights schedule

April 30, 2025

INDIANAPOLIS – AES Indiana, a subsidiary of The AES Corporation (NYSE: AES), is releasing its May window lights schedule. The window lights come on after sunset every night on the AES Indiana building on Monument Circle in downtown Indianapolis and stay on until sunrise.  

Here is the schedule for the month of May.  

Note: If there is a blank date, the default for May will be racing inspired lighting in celebration of the 109th Indianapolis 500. These lights might also be shifted based on the Indiana Pacers and their possible playoff schedule.

  • May 1 –  
  • May 2 –  
  • May 3 – National Fallen Firefighters Memorial Weekend (red) 
  • May 4 – Star Wars Day 
  • May 5 – Cinco de Mayo 
  • May 6 –  
  • May 7 –  
  • May 8 – Thank a Youth Worker Day (orange) 
  • May 9 – National Nurses Week (red) 
  • May 10 – National Nurses Week (red) 
  • May 11 – Mother’s Day 
  • May 12 –  
  • May 13 –  
  • May 14 – 
  • May 15 –  
  • May 16 –  
  • May 17 – Indiana Fever  
  • May 18 – National Eosinophilic Disease Awareness Week (magenta) 
  • May 19 – National Eosinophilic Disease Awareness Week (magenta) 
  • May 20 – Indiana Fever
  • May 21 – Indianapolis 500 
  • May 22 – Indianapolis 500 
  • May 23 – Fast Friday 
  • May 24 – AES 500 Festival Parade 
  • May 25 – Indianapolis 500  
  • May 26 – Memorial Day 
  • May 27 –  
  • May 28 –  
  • May 29 – 
  • May 30 – Indiana Fever  
  • May 31 –  

Please note that this calendar is subject to change. You can find the most up-to-date calendar here.  

AES Indiana window lights began in 1954 with red and green stripes for Christmas. Maintenance crews had to change each bulb by hand to get the different colors. Today, AES Indiana’s 10-story building has 267 individually controlled windows, each equipped with 36 high-efficiency bulbs that can generate 16 million different color combinations.  

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About AES Indiana 
AES Indiana, an AES Company, provides retail electric service to more than 530,000 residential, commercial and industrial customers in Indianapolis, as well as portions of other Central Indiana communities surrounding Marion County. During its long history, AES Indiana has supplied its customers with some of the lowest-cost, most reliable power in the country. For more information about the company, please Connect with AES Indiana on X, Facebook and LinkedIn. For more information about how AES Indiana is accelerating the future of energy, visit aesindiana.com.