It may be
important to point out that the unequivocal theoretical maximum
(limited by the available photosynthetically useful solar radiation)
is reported as about 141 g dry algal biomass m2 open pond area
day1 for the US which is somewhat different than the 354,000 l
crude algae oil ha1 year1 or about 237 g m2 open pond area
day1 (assuming 36.8 wt.% oil in dry algal biomass, and a density
of 0.9 kg 11 oil) given elsewhere as theoretical maximum (Weyer
et al., 2010) but the assumptions for irradiation are different for
these estimates.