Google has been studying the impact of clean energy innovation on the economy. Yes Google and this surprises me too, but they find that clean energy technology creates 1.1 million jobs/year, and adds $155B/year to the GDP. These numbers would be higher if the USA adopted a clean energy policy. For more info, Google has set up a enerny innovation website. This is all very exciting, but clean energy innovation is on the brink due to cuts to renewable energy programs by congress.