Maiden – “What is the BEST option for renewable energies…”. When you speak about renewables it’s probably best to break it up into components. In Texas commercial wind power for residential usage has worked out well. But wind isn’t being developed as a sub for fossil fuels (mostly coal) but as a supplement. In CA it looks like individual solar might be getting a foothold. But now jump to the really big component of fossil fuel consumption in the US: motor fuels. Now you’re talking biofuels for the most part. And there’s a very wide range opinions about its economic viability.
Algae? Seems the common knock on it is the lack of scalability. I think someone once calculated that the entire state of Rhode Island would have to be turned into a giant algae farm to have even a minimal impact on our motor fuel consumption.