• A city skyline is reflected in a lake in a park.

    All Communities Deserve Green Buildings


    For 20 years we've been the green building community of Illinois. We educate, advocate, and reduce barriers to high performance buildings across the state.

    Connect with Us
  • A large group of people are gathered in a large room.

    Join The Green Building Movement


    Being a member demonstrates your passion and commitment to advancing green buildings in Illinois. Get connected to like-minded sustainability professionals and support green and equitable communities.

    Become a Member

Featured Events


APRIL

16

Common Cents: Overcoming Barriers for Sustainable Schools

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April
28

LEEDv5 For Builders: Key Changes from LEED v4 and What They Mean for Construction

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April
28

LEEDv5 For Designers: Key Changes from LEED v4 and What They Mean for Project Teams

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News & Updates


By Ryan Wilmington March 18, 2026
Welcome to the March edition of the Illinois Green Policy Update. We're incredibly excited to share some important updates about our local outreach, bills in Springfield, state renewable energy progress, and more!
By Matt Watson February 12, 2026
Strategies for Leveraging Net Zero Practices of Statewide Impact
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Our Initiatives


Green Building Education

The professionals that design, build, and operate buildings are important advocates for net zero, and need a reliable source for the latest trends and technologies. We deliver effective educational programs, convening diverse professional stakeholders.

Existing Buildings Programs

We believe that all communities deserve healthy, high performing buildings. Through our Building Energy Resource Hub and Illinois Green Schools Project initiatives, we provide the support to show all building types can be on the path to net zero.

Green Building Policy

We must remove barriers by providing information about the technical and policy roadblocks to net zero adoption. We amplify green building professional voices that impact green building policy and support the passage of major climate laws.

MEASURING OUR IMPACT

To combat climate change in Illinois, it's time we made net zero buildings feasible, affordable, and so commonplace that every building in Illinois by 2050 is net zero. Mainstreaming the technology and building methods, whether new or existing, will not be easy but no one is better positioned to make it happen than green building professionals.

58

Programs, trainings, and events last year

2,000+

Volunteer Hours last year

4,150

Program Attendees last year


Our Community


"I chose to be a member and a volunteer for Illinois Green Alliance to grow my network of connections, and by joining I gained more than I could ever imagine. Over the past six years my colleagues have grown to be my friends, and I learn something new about sustainability, life, and myself through everyone and every event I attend."


Taylor Callahan

Illinois Green member since 2016

Join our community

Thank you to our Sustaining Sponsors!

USGBC

USGBC

Sloan

Sloan

ComEd

ComEd

Baumann

Baumann

Powering Chicago

Powering Chicago

Richard Purpose Builders

Richard Purpose Builders

Windfree Solar

Windfree Solar

USG

USG

Cylone

Cyclone

Ozinga

Ozinga

Tishman Speyer

Tishman Speyer

Wight & Co

White & Co

Clayco

Clayco

dbHMS

dbHMS

Pepper Construction

Pepper Construction

Rockwool

Rockwool

Village of Oak Park

Village of Oak Park

Slipstream

Slipstream

Arup

Arup

Leopardo

Leopardo

Elevate

Elevate

Electrical Contractors' Union

Electrical Contractors' Union

AT Mechanical

AT Mechanical

Whole Cubes

Whole Cubes

Windy City Reps

Windy City Reps

Chiefable

Chiefable

wurkwel

wurkwel

Bank of America

Wastenot

Zackrzewski