One key simplifying assumption in our model is that rather than modeling diurnal cycling, we have opted instead to assume a constant average light intensity of 350µE/m 2 /s. By averaging the sunlight experienced across a full 24 hours, we are able to account for the reduced growth rate and phosphorus uptake rate during the dark hours. However, future work is needed to expand this model to better account for diurnal cycling, and future experimental work will help better define the metabolism of our cyanobacterial mutant in the dark. These will be key steps to improve the model and identify potential hurdles towards economic viability that can be addressed in future process-and bio-engineering work.