I wouldn't say "a lot" in economic terms: "The theoretical absolute minimum amount of energy required by natural osmosis to desalinate average seawater is appro

I wouldn't say "a lot" in economic terms: "The theoretical absolute minimum amount of energy required by natural osmosis to desalinate average seawater is approximately 1 kilowatt-hour per cubic meter (kwh/m3) of water produced, or 3.8 kilowatt-hours per thousand gallons (kwh/kgal)." https://www.amtaorg.com/wp-content/uploads/7_MembraneDesalinationPowerUsagePutInPerspective.pdf https://www.amtaorg.com/wp-content/uploads/7_MembraneDesalin...