SWRO Cost Estimator
ERI’s SWRO Cost Estimator estimates the water production costs in seawater reverse osmosis (SWRO) plants. It calculates water costs based on variables such as interest rate, debt/equity ratio, equity return on investment and power cost.
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Reverse osmosis is a more economical way to desalinate seawater than distillation methods such as multistage flash (MSF). While reverse osmosis requires high pressures, distillation requires high temperatures. The figure below compares the cost of seawater reverse osmosis (SWRO) with thermal desalination distillation.
Source: GWI data pro-rated by ERI for a 50 million gallon per day or 190,000 cubic meter per day facility.