Illinois' Environmental Policy Leader
Since 1975, IEC has been at the forefront of environmental policy development and advocacy in Illinois.
2025 Veto Session
Celebrate Climate Victories
We’re celebrating the biggest 24 hours in Illinois climate action in state history following passage of the Clean and Reliable Grid Affordability (CRGA) Act (SB25) and the Northern Illinois Transit Authority (NITA) Act (SB2111).
Help Us Leap to Victory in 2026
Join our Programs team for a series of policy webinars this November. With all the chaos happening at the federal level, it is crucial to push for environmental protections at the state level.
Start Your Advocacy
Visit our Action Center to find the education and advocacy opportunities that are perfect for you.
Secure Illinois' Climate Future
The environment matters to you. Tell your lawmakers to fight for it, too. Check out our campaigns.
Safeguard Illinois' Climate
Help us ensure that Illinois charges forward in pursuit of strong climate and clean energy policies that are equitable, affordable, and reliable.
Protect Illinois Wetlands
Illinois has already lost 90% of its original wetlands. Protection and restoration of these areas is critical for the future of our state’s animals, plants, and communities.
Phase Out Single-Use Plastics
Every year 22 million pounds of plastic enter the Great Lakes. We can’t recycle our way out of our plastics problem. It’s time to kick single-use plastics.
Defeat Anti-Environment Legislation
Click the button to see our full priorities list.
Expand Your Policy Expertise
Explore Our Vision for Illinois
IEC addresses Illinois’ most urgent environmental issues. We shape policy in agriculture, conservation, energy, transportation, water, and zero waste.
New on the Blog
See what IEC staff and affiliates are saying about key environmental issues.
IEC Affiliates Power Our Work
Over 130 Organizations Believe in Our Mission
IEC relies on our affiliate member organizations to identify the biggest issues facing our environment. Together, we share resources, mobilize supporters, and respond quickly to policy debates and advocacy opportunities.
Discover what it means to be an IEC affiliate.