Question for Blake on post Oct. 1 early a.m. 28
Blake where did you get the number of $150 per square meter for a cost for a modern PBR?
A square meter is not a good way to compare ditches with a PBR. A more accurate way of comparsion would be to use gallon capicity and production per gallon per day.
If you compare a square meter of ditch surface to a square meter of PBR surface, yes, the PBR will cost more per meter of surface area.
Lets say the ditch has an effective production debth of four inches and of coarse only works less than fifty percent of the time. The modern PBR could be 40 feet deep and be lighted all the way from the top to the bottom. And it will work 24 hours a day with flashing, color specific LEDs that are only on 10% of the time in micro bursts of photons.
Now take 40' X 3 = 120 square meters of reactor producing algae under perfectly controlled conditions.
Oh yes, did we forget that this operates 24/7/365.
So we gain another 12 hours per day on the ditch.
So now we are up to 240 effective square meters 4" deep and we are compareing that 1 meter of PBR surface to 1 meter of ditch surface. Hardly seems fair.