From the article... ... which was probably grown in a pond. A photobioreactor is a closed vessel with inputs for water, an algae culture, nutrients (slightly composted sewage), light (either directly or with solar powered red and blue LEDs), and CO2 (thats right, the very "evil pollutant" that plants use for photosynthesis) can produce vegetable oil that can go right in the tank in warm weather, or can be transesterified into biodiesel. A base doesn't have to be very big before you can start putting these in for power. A nuclear powered tanker could produce it continuously while underway, delivering fuel to mobile formations in the field via vertical convoys.