Stephen E. O'Day

Partner & Head of Environmental Law & Sustainability Practice at Smith, Gambrell, & Russell, LLP.

Mr. O’Day has handled environmental litigation, consultation and negotiations for over 35 years. He advises clients in connection with the full range of environmental issues. He also assists clients in environmental issues in real property acquisition and development and the acquisition and sale of operating manufacturing, renewable energy, and other entities and projects.

Mr. O’Day currently serves on the Executive Advisory Council for Greenprint Midtown, the sustainability initiative for Midtown Atlanta, being implemented by Midtown Alliance. He is a founding and current Board member, and immediate past Chair of the Board of Trustees for the Southern Environmental Law Center, serves on the Board of the Chattahoochee Riverkeeper, is a founding member and continues to serve on the Board of the Georgia Property Rights Council and is a member of Leadership Atlanta, and teaches environmental law as a part-time instructor at the Georgia Institute of Technology.

He studied Civil Engineering at the Georgia Institute of Technology and earned a B.A. degree, summa cum laude, in Political Science from Furman University in 1976. He received his J.D. degree, cum laude, from Harvard Law School in 1979. While at Harvard, Mr. O’Day served as Chairman of the Harvard Environmental Law Society. 


David Colt

Energy Finance & Advisory

David is the founder and principal at Efficient Resource Management (ERM), an advisory firm dedicated to accelerating the deployment of renewable and sustainable technologies. ERM's practice areas include family offices and growth-stage technology companies. 

In the family office practice, ERM specializes in building platforms for private direct investment into energy efficiency and renewable energy projects. In the corporate practice, ERM works with private cleantech companies to leverage 3rd party financing and strategic partnerships increase sales and impact.


Prior to ERM, David was on the founding team of Richard Branson's sustainability accelerator, Carbon War Room, where he led research on new business models for gigaton-scale carbon reduction. David began his career as an analyst, covering clean energy technologies for a hedge fund and think tanks.