Environmentalism, and clean energy in particular, are on a lot of people’s minds these days. There is no doubt that the best, and most affordable means to increase efficiency in the United States and elsewhere is through conservation. But with a growing population, and an aging set of coal and nuclear plants, we must decide in what direction to go for future energy generation. An excellent study on the subject can be viewed here. Where product demand exists, it is likely some will find ways to capitalize on that demand, which leads to companies specializing in wind and solar power. The largest North American manufacturer of wind turbines is General Electric Inc (GE). But since wind energy is a very small part of GE’s business, I will not cover it in this article. Siemens AG (SI) is similar in that regard to GE. United Technologies Corp. (UTX) is nearly as diverse as GE, but appears to have a larger stake in the growth of alternative energy. First Solar, Inc. (FSLR) and Sunpower Corporation (SPWR) are two leading domestic solar companies. I will analyze these renewable energy providers using their pasts as guides to their futures. Vestas Wind Systems A/S (VWDRY.PK)…


