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Table 7 Capital costs of DOE open system per hectare

From: Algae biodiesel - a feasibility report

Equipment Cost/ha (2003 dollars)
Earthworks 16,613
Walls & structural 13,611
Mixing system 8,063
Carbonation system 3,000
Instrumentation 820
Primary (settling ponds) 12,259
Secondary (centrifuges) 6,488
Water supply/distrib. 7,255
C02 distribution 426
Nutrient supply 1,280
Salt disposal 1,365
Buildings (not for centf.) 939
Roads and drainage 854
Electrical distribution & supply 3,154
Machinery 684
Engineering/Construction/Contingency 19,203
Land (2 ha) 4,098
Total capital cost 101,256
Annual cost 14,417