Guests Mary McLeod and Maureen Scanlon discuss the award winning Austin Energy Green Building Program. Both guests have been with the program from its infancy in the 1990's to present day. The Austin City Council celebrated the 20th anniversary of the Green Building Program at City Hall on this same day, February 17, 2011. It is the first comprehensive sustainable building program in the United States and its founders are credited with establishing the term âgreen building".