Theoretical maximum yield as a function of latitude for different cell oil contents. Weyer et al. (2009) Click to enlarge. At team of researchers from Solix Biofuels ( earlier post ), Colorado State University and the National Renewable Energy Laboratory have calculated both an absolute upper limit to solar-based algal oil production as well as a feasible target range for production based on realistic efficiencies (calculated for six global sites). Algal oil can be used as a biofuel feedsto