1. RENEWABLE ENERGY
Clean tech, Big Oil hottest new couple in energy world
"Sometimes you need to kiss many frogs before you find the princes." That sums up the past few years of investing in clean technology, says Wal van Lierop, co-founder and CEO of Chrysalix Energy Venture Capital. But now the industry has transformed to the point that even a small but growing number of traditional energy companies are embracing the use of renewables.