Do you assume big corporations are bad? If you do, you'll miss corporations doing some good things - especially when it comes to expanding markets in ways that only huge buyers can do.
The largest non-utility owner of solar panels in the United States? Wal-Mart. And a former McDonald's executive is launching a new green restaurant chain that could dramatically ramp up demand for locally-sourced, sustainably-produced food nationwide.
Yes, Wal-Mart still does plenty of bad things especially when it comes to trampling on the rights of workers. But it has a unique power to show every corner of America that clean energy and energy efficient technologies make good business sense.