Saul is an engineer and entrepreneur specialising in clean and renewable energy technologies. Over two decades in Silicon Valley, he has founded more than a dozen technology companies. He is the author of three books, including Electrify, The Big Switch, and his most recent release Plug In!. Saul has shifted his focus from his R&D lab, Otherlab, to public policy and advocacy, founding Rewiring America, Rewiring Australia, and Rewiring Aotearoa, non-partisan organisations dedicated to large-scale electrification and decarbonisation.