SPRINGFIELD – Artificial light at night is estimated to contribute to the deaths of hundreds of millions of migratory birds each year in the U.S., while also disrupting nocturnal wildlife and ecosystems, according to the National Audubon Society. State Senator Laura Ellman is working to address these impacts with legislation aimed at improving energy efficiency and reducing harmful outdoor lighting across Illinois.

“Light pollution is more than just an inconvenience: it impacts our health, disrupts wildlife and wastes energy,” said Ellman (D-Naperville). “This legislation ensures Illinois is using smarter, more efficient lighting that protects both our environment and taxpayers.”

Senate Bill 3037 would update the Illinois Energy Efficient Building Act by incorporating ANSI/IES lighting standards into the Illinois Stretch Energy Code for commercial buildings. These nationally recognized standards guide responsible outdoor lighting practices for roadways, pedestrian areas, industrial sites and more.

The measure builds on Ellman’s previous law, which applied similar standards to the Department of Natural Resources, by expanding requirements to all state agencies. By addressing excessive and misdirected artificial light at night, the bill aims to improve public health, protect ecosystems, enhance nighttime visibility and reduce unnecessary energy use.

Artificial light at night interferes with migratory patterns, disorients birds, and alters the behavior of nocturnal species, while also contributing to higher energy costs. SB 3037 aligns Illinois with at least 19 other states that have taken steps to reduce light pollution through targeted, energy-efficient lighting policies.

“We are losing our natural cycle of day and night at an alarming rate: 10% annually,” said Adam Kreuzer, delegate for DarkSky International and constituent. “Senate Bill 3037 protects not only the health of migrating birds and nocturnal species, it protects our natural circadian rhythm. Research shows that an artificial day at night significantly affects our personal health.”

Senate Bill 3037 was heard in the Senate State Government Committee on Wednesday and heads to the full Senate for further consideration.