I never looked into it but I always hear how expensive it is to run these things?
In short, absurdly expensive. So expensive it became economically impractical after running for 3 month as the '92 El Nino made relatively cheap reservoir water available again. With the odds of a strong El Nino climbing this year it looks like we are set for a repeat of that expensive debacle.
Feast and famine of rainfall is a fact of life that politicians seem incapable of grasping. It has always been this way. Average and water-poor years followed by strong El Ninos, which reset the reservoirs and snowpack roughly every 10 years. Budgeting water better between El Ninos should be trivial, yet....
There's a reason most bakers don't grow their own wheat and mill their own flour.
The new mythology: Unicorns, griffins and vertical integration
Old programmers never die, they just hit account block limit.