Old Rocks
Diamond Member
At a costThey finally take action..............but only when they are thirsty...............a WOW, I COULD HAVE A V8 MOMENT.
When the Carlsbad Desalination Project is completed this fall, it will be the largest desalination plant in the Western Hemisphere. Photo credit: Carlsbad Desalination Project
Epic Drought Spurs California to Build Largest Desalination Plant in Western Hemisphere
Water quantity and cost[edit]
The plant is expected to produce 50 million US gallons (190,000 m3) of water per day[29] (0.069 cubic kilometres per annum) with energy use of ~3.6[30] kWh for 1 m3 fresh water, or ~38 MW of average continuous power.[6][31] Another estimate has the plant requiring 40 MW to operate, and a cost of $49 million to $59 million a year.[1] It will provide about 7% of the potable water needs for the San Diego region.[4]
The San Diego County Water Authority signed a contract with the plant operator to purchase a minimum 48,000 acre-foot per year of drinking water, but it can also demand up to a maximum of 56,000 acre-foot per year.[32][33] (Since one acre-foot is about equal to 1,233 cubic meters, the output would be a minimum of 59,184,000 cubic meters/year to a maximum of 69,048,000 cubic meters/year.) One acre-foot is normally enough water to supply two households of four for one year.[34][35]
The cost of water from the plant will be $100 to $200 more per acre-foot than recycled water, and $1,000 to $1,100 more per acre-foot than reservoir water, but $100 to $200 per acre-foot less than importing water from outside the county.[36] As of April 2015, San Diego County imports 90% of its water.[10] A group of environmentalist groups, Desal Response Group, claims that the plant will cost San Diego County $108 million a year.[13]