Roberts' shout out to the quiet proliferation of decentralized energy sources grabbed my attention because of what I'd noticed while walking around San Francisco: every school yard I pass seems to contain a free standing solar panel installation, even in poor, rundown neighborhoods.
Curiously, it proved not easy to find information about what program or programs had brought about these installations. Whatever the school district is doing, they are not talking about it much for public consumption. They are proud that John O'Connell High School is teaching solar engineering. They are proud that a sustainability initiative has reduced energy use at seven schools by 30 percent.
Meanwhile, apparently, the solar panels proliferate and form just part of what every child finds in their school yard.
Maybe that's what the trends Roberts calls out will mean: the arrival new forms of energy acquisition and distribution that seem so ordinary we won't notice them.