In 2009, when I wrote my first book, Renewable Energy–Facts and Fantasies, the subject of biofuels was very much alive, and I wanted to include a chapter on the subject. Algal-based biofuels seemed to hold the most promise, due to their high energy density (33 times greater than any terrestrial plant). But then the hard times came, as they say.

Chevron, who had been working to develop commercial biofuels for decades, abandoned their pursuit, and no other large enterprise took the reins.  Today, though hobbyists are still working in this space, the topic seems to have been relegated to history (despite what the charlatans claim at left).

We Said Bye-Bye to Biofuels About a Decade Ago