• 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


Feb

27

Contractor Connection: Chicagoland Clean Energy Incubator Program

View Event

March

4

Women in Green Building Leadership Luncheon

View Event

Apr

21-24

CxEnergy 26

View Event

News & Updates


By Ryan Wilmington January 23, 2026
Five years ago, Illinois Green Alliance launched a new strategic plan with a bold north star to guide our work: to make net zero buildings feasible, affordable, and so commonplace that every building in Illinois was net zero by 2050. Mainstreaming the technology and building methods, whether new or existing, is no easy feat. But we realized no one was better positioned to make it happen than green building professionals.Our focus over the last five years have been about laying the foundation necessary to meet our long-term vision and I’m excited to share the progress we’ve made. These past five years have been guided by three pillars: â—Ź Educating industry professionals to ensure they have the expertise to use net zero building methods in their work and can help us raise awareness about their value with building owners and policy makers. â—Ź Removing barriers by providing information about the technical, financial, social and policy roadblocks to net zero adoption and passing new laws that help to overcome these barriers. â—Ź Demonstrating it can work everywhere by collaborating with building types in historically underinvested communities that are considered difficult to implement net zero methods. That focus has paid off, allowing us to meet many of the goals we set for our work across all of our strategies. For example:
By Ryan Wilmington January 16, 2026
At the start of 2025, I told our members that we can build a movement of green building advocates that can continue the progress made in Illinois for high-performance building, regardless of what happens in Washington D.C. Over the last year, you’ve proven me right. While elsewhere green building and clean energy goals have been put on pause, Illinois has continued the fight and won three huge victories that usher in historic investment in clean energy and green buildings and raise the bar for building performance, completely changing the landscape for what is possible in this industry. 
Show More

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