SWRO Energy & Operating-Cost Estimator

Estimate whole-plant electricity for a seawater RO system. Modern SWRO with energy recovery runs roughly 3–4 kWh/m³; older designs exceed 6.

Permeate production (m³/day)

Specific energy (kWh/m³): 3.5

Electricity price (per kWh, your currency)

—kWh per day (whole plant)

Energy per m³—

Estimated daily energy cost—

Estimated annual energy cost—

Framework estimate only, no fabricated ROI. Whole-plant figures include pretreatment, dosing, and controls, so they exceed the bare membrane’s specific energy. Choosing H2 over H1 can lower operating energy at a small rejection trade-off.

Request a system power & recovery estimate →