In the early 2000s, Porat was a member of a high-profile wave of tech executives who founded cleantech companies.
[1][2] He launched three companies in the built environment: Serious Materials, Zeta Communities, and CalStar Cement and was a member of the U.S. China Green Energy Council.
After leaving the Aspen Institute, Porat co-founded Private Satellite Network (PSN).
[13] Porat co-founded General Magic in 1990 with Andy Hertzfeld and Bill Atkinson from the original Mac team.
[17] He then founded CalStar Products in 2007, a firm recovering energy from industrial waste streams.