For those interested in investing in alternative energy products, it is important to know the big names in each of the major industries. Wind, solar, hydroelectric, nuclear, and biofuels have all been gaining market share as traditional fossil fuel generated power has become increasingly more expensive. Solar was the big winner of 2007, as progress was made to bring it closer to viability. Wind power companies have done very well had you invested in the Dutch company Vestas Wind Energy (VWSYF.PK) which is up 675% in the past few years, or Zoltek (NYSE: ZOLT) which is up nearly 2000% over a five year time frame. Today, we look at three biofuel stocks, which were a mixed bag in 2007. With sugar the most promising of the agriculture fuels, current prices for some of its major companies may warrant interest by those ready to invest in renewable energy. (more…)