Passive Solar Water Desalination
Advances are always welcome, but it's worth noting that desalination works economically right now.<p>In the last 15 years large scale desalination has become practical. It's one of the great engineering feats of our time.<p>We can now generate it at scale for less than $.01 per 6.4 gallons. This includes the cost of the electricity, which is about half the expense.<p>San Francisco charges $.02/gallon to residents, 12 times that price. It's now cost effective for any coastal city in America to supply residential water this way.<p>Lots of people still think desalination is still impractical, because it was 20 years ago. They just haven't learned about the new tech.<p>The tech:<p><a href="https://www.energymonitor.ai/tech/can-desalination-save-a-drying-world/?cf-view" rel="nofollow noreferrer">https://www.energymonitor.ai/tech/can-desalination-save-a-dr...</a><p>Residential rates:<p><a href="https://sfpuc.org/accounts-services/water-power-sewer-rates/2023-rates-frequently-asked-questions" rel="nofollow noreferrer">https://sfpuc.org/accounts-services/water-power-sewer-rates/...</a>