Donald Aitken’s career has taken him from professorships at Stanford University, San Jose State University and the Frank Lloyd Wright School of Architecture, to service as the founding Executive Director of the U.S. Department of Energy’s Western Regional Solar Energy Center, and finally as Senior Staff Scientist for Renewable Energy Policy and Economics with the Union of Concerned Scientists. While in that position he co-introduced the Renewable Portfolio Standard as an important policy instrument, which has now been adopted by 42 states and internationally. He has been honored as “the father of the RPS”. Dr. Aitken has served ASES twice as Board Chairman, as well as Passive Division Chairman. He served ISES as a long time member of the Board and Vice President. Dr. Aitken is an ASES Fellow, an Abbot Award recipient, and a life member. He was also the co-founder of the international environmental organization Friends of the Earth.