Defaults use published industry figures (Water Conditioning & Purification: standard 156 psi = 4.2 kWh/1,000 gal; low-energy 93 psi = 2.4 kWh/1,000 gal). These are cited industry averages, not Blue Membrane metered data. Real savings depend on feed TDS, recovery, temperature and pump efficiency; the energy advantage narrows as feed TDS rises.