Bob Weisenmiller oversees the energy policy and planning of a state that is home to 39 million people. California is not only the 5th largest economy in the world, it is also a global clean energy and climate action leader. I sat down with Chairman Weisen miller in early September, at the Global Climate Action Summit in San Francisco. A few days prior, Governor Brown had issued an executive order requiring the state to reach overall carbon neutrality by 2045—the most ambitious climate commitment to date by any political leader, anywhere. And Bob Weisenmiller chairs the state agency charged with making it happen.