Illinois Green Alliance is a member-driven nonprofit organization that aims to promote buildings and communities that provide people with better, brighter, and healthier places to live, work, and learn. With a focus on creating a growing and vibrant green building community, they offer various programs, advocacy initiatives, and educational opportunities driven by their dedicated volunteers and individual members. Their vision is to combat climate change in Illinois by making net zero buildings feasible, affordable, and commonplace.

They strive for every building in Illinois to be net zero by 2050. Established in 2002 by a group of passionate green building advocates, Illinois Green Alliance has a rich history of accomplishments. They played a significant role in supporting the passage of the Illinois Green Buildings Act and the Chicago energy benchmarking ordinance.

They also launched the Neighborhood Power Project and the Illinois Green Schools Project, aimed at assisting community-oriented buildings with sustainability operations and engaging students and classrooms in green building initiatives, respectively. As a member-driven organization, Illinois Green Alliance welcomes individuals and companies to join their cause, offering opportunities for membership, sponsorship, participation on committees, and becoming advocates for sustainable practices. Through their resources, events, certifications, and credentials, they provide valuable support to the green building community in Illinois, striving towards their mission of creating a sustainable and greener future for all